dep/imgui: Update to v1.90.4

2024-03-28 17:38:30 +10:00 · 2024-03-28 17:38:30 +10:00 · 44322a14f0
parent 1097eab600
commit 44322a14f0
17 changed files with 6007 additions and 1040 deletions
--- a/dep/imgui/CHANGELOG.txt
+++ b/dep/imgui/CHANGELOG.txt
--- a/dep/imgui/LICENSE.txt
+++ b/dep/imgui/LICENSE.txt
@ -1,6 +1,6 @@
 The MIT License (MIT)
-Copyright (c) 2014-2019 Omar Cornut
+Copyright (c) 2014-2024 Omar Cornut
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
--- a/dep/imgui/README.md
+++ b/dep/imgui/README.md
@ -1,60 +1,61 @@
-dear imgui
+Dear ImGui
 =====
 [![Build Status](https://travis-ci.org/ocornut/imgui.svg?branch=master)](https://travis-ci.org/ocornut/imgui)
 [![Coverity Status](https://scan.coverity.com/projects/4720/badge.svg)](https://scan.coverity.com/projects/4720)
-_(This library is free as in freedom, but needs your support to sustain its development. In addition to maintenance and stability there are many desirable features yet to be added. If your company is using dear imgui, please consider reaching out for invoiced financial support. If you are an individual using dear imgui, please consider donating via Patreon or PayPal.)_
+<center><b><i>"Give someone state and they'll have a bug one day, but teach them how to represent state in two separate locations that have to be kept in sync and they'll have bugs for a lifetime."</i></b></center> <a href="https://twitter.com/rygorous/status/1507178315886444544">-ryg</a>
-Individuals/hobbyists: support continued maintenance and development via the monthly Patreon:
+----
 <br>&nbsp;&nbsp;[![Patreon](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/patreon_01.png)](http://www.patreon.com/imgui)
-Individuals/hobbyists: support continued maintenance and development via PayPal:
+[![Build Status](https://github.com/ocornut/imgui/workflows/build/badge.svg)](https://github.com/ocornut/imgui/actions?workflow=build) [![Static Analysis Status](https://github.com/ocornut/imgui/workflows/static-analysis/badge.svg)](https://github.com/ocornut/imgui/actions?workflow=static-analysis) [![Tests Status](https://github.com/ocornut/imgui_test_engine/workflows/tests/badge.svg)](https://github.com/ocornut/imgui_test_engine/actions?workflow=tests)
 <br>&nbsp;&nbsp;[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S)
-Businesses: support continued maintenance and development via support contracts or sponsoring:
+<sub>(This library is available under a free and permissive license, but needs financial support to sustain its continued improvements. In addition to maintenance and stability there are many desirable features yet to be added. If your company is using Dear ImGui, please consider reaching out.)</sub>
 <br>&nbsp;&nbsp;_E-mail: omarcornut at gmail dot com_
-Dear ImGui is a bloat-free graphical user interface library for C++. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline enabled application. It is fast, portable, renderer agnostic and self-contained (no external dependencies).
+Businesses: support continued development and maintenance via invoiced sponsoring/support contracts:
 <br>&nbsp;&nbsp;_E-mail: contact @ dearimgui dot com_
 <br>Individuals: support continued development and maintenance [here](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S). Also see [Sponsors](https://github.com/ocornut/imgui/wiki/Sponsors) page.
-Dear ImGui is designed to enable fast iterations and to empower programmers to create content creation tools and visualization / debug tools (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal, and lacks certain features normally found in more high-level libraries.
+| [The Pitch](#the-pitch) - [Usage](#usage) - [How it works](#how-it-works) - [Releases & Changelogs](#releases--changelogs) - [Demo](#demo) - [Integration](#integration) |
 :----------------------------------------------------------: |
 | [Gallery](#gallery) - [Support, FAQ](#support-frequently-asked-questions-faq) -  [How to help](#how-to-help) - [Sponsors](https://github.com/ocornut/imgui/wiki/Sponsors) - [Credits](#credits) - [License](#license) |
 | [Wiki](https://github.com/ocornut/imgui/wiki) - [Extensions](https://github.com/ocornut/imgui/wiki/Useful-Extensions) - [Languages bindings & frameworks backends](https://github.com/ocornut/imgui/wiki/Bindings) - [Software using Dear ImGui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) - [User quotes](https://github.com/ocornut/imgui/wiki/Quotes) |
-Dear ImGui is particularly suited to integration in games engine (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on consoles platforms where operating system features are non-standard.
+### The Pitch
-See [Software using dear imgui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui), [Quotes](https://github.com/ocornut/imgui/wiki/Quotes) and [Gallery](https://github.com/ocornut/imgui/issues/2265) pages to get an idea of its use cases.
+Dear ImGui is a **bloat-free graphical user interface library for C++**. It outputs optimized vertex buffers that you can render anytime in your 3D-pipeline-enabled application. It is fast, portable, renderer agnostic, and self-contained (no external dependencies).
-Dear ImGui is self-contained within a few files that you can easily copy and compile into your application/engine:
+Dear ImGui is designed to **enable fast iterations** and to **empower programmers** to create **content creation tools and visualization / debug tools** (as opposed to UI for the average end-user). It favors simplicity and productivity toward this goal and lacks certain features commonly found in more high-level libraries.
 - imgui.cpp
 - imgui.h
 - imgui_demo.cpp
 - imgui_draw.cpp
 - imgui_widgets.cpp
 - imgui_internal.h
 - imconfig.h (empty by default, user-editable)
 - imstb_rectpack.h
 - imstb_textedit.h
 - imstb_truetype.h
-No specific build process is required. You can add the .cpp files to your project or #include them from an existing file.
+Dear ImGui is particularly suited to integration in game engines (for tooling), real-time 3D applications, fullscreen applications, embedded applications, or any applications on console platforms where operating system features are non-standard.
 - Minimize state synchronization.
 - Minimize UI-related state storage on user side.
 - Minimize setup and maintenance.
 - Easy to use to create dynamic UI which are the reflection of a dynamic data set.
 - Easy to use to create code-driven and data-driven tools.
 - Easy to use to create ad hoc short-lived tools and long-lived, more elaborate tools.
 - Easy to hack and improve.
 - Portable, minimize dependencies, run on target (consoles, phones, etc.).
 - Efficient runtime and memory consumption.
 - Battle-tested, used by [many major actors in the game industry](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui).
 ### Usage
-Your code passes mouse/keyboard/gamepad inputs and settings to Dear ImGui (see example applications for more details). After Dear ImGui is setup, you can use it from \_anywhere\_ in your program loop:
+**The core of Dear ImGui is self-contained within a few platform-agnostic files** which you can easily compile in your application/engine. They are all the files in the root folder of the repository (imgui*.cpp, imgui*.h). **No specific build process is required**. You can add the .cpp files into your existing project.
-Code:
+**Backends for a variety of graphics API and rendering platforms** are provided in the [backends/](https://github.com/ocornut/imgui/tree/master/backends) folder, along with example applications in the [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder. You may also create your own backend. Anywhere where you can render textured triangles, you can render Dear ImGui.
 See the [Getting Started](https://github.com/ocornut/imgui/wiki/Getting-Started) guide and [Integration](#integration) section of this document for more details.
 After Dear ImGui is set up in your application, you can use it from \_anywhere\_ in your program loop:
 ```cpp
 ImGui::Text("Hello, world %d", 123);
 if (ImGui::Button("Save"))
-{
+    MySaveFunction();
    // do stuff
 }
 ImGui::InputText("string", buf, IM_ARRAYSIZE(buf));
 ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
 ```
-Result:
+![sample code output (dark, segoeui font, freetype)](https://user-images.githubusercontent.com/8225057/191050833-b7ecf528-bfae-4a9f-ac1b-f3d83437a2f4.png)
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_02.png)
+![sample code output (light, segoeui font, freetype)](https://user-images.githubusercontent.com/8225057/191050838-8742efd4-504d-4334-a9a2-e756d15bc2ab.png)
 <br>_(settings: Dark style (left), Light style (right) / Font: Roboto-Medium, 16px / Rounding: 5)_
 Code:
 ```cpp
 // Create a window called "My First Tool", with a menu bar.
 ImGui::Begin("My First Tool", &my_tool_active, ImGuiWindowFlags_MenuBar);
@ -70,12 +71,14 @@ if (ImGui::BeginMenuBar())
    ImGui::EndMenuBar();
 }
-// Edit a color (stored as ~4 floats)
+// Edit a color stored as 4 floats
 ImGui::ColorEdit4("Color", my_color);
-// Plot some values
+// Generate samples and plot them
-const float my_values[] = { 0.2f, 0.1f, 1.0f, 0.5f, 0.9f, 2.2f };
+float samples[100];
-ImGui::PlotLines("Frame Times", my_values, IM_ARRAYSIZE(my_values));
+for (int n = 0; n < 100; n++)
    samples[n] = sinf(n * 0.2f + ImGui::GetTime() * 1.5f);
 ImGui::PlotLines("Samples", samples, 100);
 // Display contents in a scrolling region
 ImGui::TextColored(ImVec4(1,1,0,1), "Important Stuff");
@ -85,249 +88,131 @@ for (int n = 0; n < 50; n++)
 ImGui::EndChild();
 ImGui::End();
 ```
-Result:
+![my_first_tool_v188](https://user-images.githubusercontent.com/8225057/191055698-690a5651-458f-4856-b5a9-e8cc95c543e2.gif)
-<br>![sample code output](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/code_sample_03_color.gif)
+
 Dear ImGui allows you to **create elaborate tools** as well as very short-lived ones. On the extreme side of short-livedness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweak variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game-making editor/framework, etc.
 ### How it works
-Check out the References section if you want to understand the core principles behind the IMGUI paradigm. An IMGUI tries to minimize superfluous state duplication, state synchronization and state retention from the user's point of view. It is less error prone (less code and less bugs) than traditional retained-mode interfaces, and lends itself to create dynamic user interfaces.
+The IMGUI paradigm through its API tries to minimize superfluous state duplication, state synchronization, and state retention from the user's point of view. It is less error-prone (less code and fewer bugs) than traditional retained-mode interfaces, and lends itself to creating dynamic user interfaces. Check out the Wiki's [About the IMGUI paradigm](https://github.com/ocornut/imgui/wiki#about-the-imgui-paradigm) section for more details.
-Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes required to render them is fairly small. Because Dear ImGui doesn't know or touch graphics state directly, you can call its functions  anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate dear imgui with your existing codebase.
+Dear ImGui outputs vertex buffers and command lists that you can easily render in your application. The number of draw calls and state changes required to render them is fairly small. Because Dear ImGui doesn't know or touch graphics state directly, you can call its functions  anywhere in your code (e.g. in the middle of a running algorithm, or in the middle of your own rendering process). Refer to the sample applications in the examples/ folder for instructions on how to integrate Dear ImGui with your existing codebase.
-_A common misunderstanding is to mistake immediate mode gui for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the gui functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
+_A common misunderstanding is to mistake immediate mode GUI for immediate mode rendering, which usually implies hammering your driver/GPU with a bunch of inefficient draw calls and state changes as the GUI functions are called. This is NOT what Dear ImGui does. Dear ImGui outputs vertex buffers and a small list of draw calls batches. It never touches your GPU directly. The draw call batches are decently optimal and you can render them later, in your app or even remotely._
-Dear ImGui allows you create elaborate tools as well as very short-lived ones. On the extreme side of short-liveness: using the Edit&Continue (hot code reload) feature of modern compilers you can add a few widgets to tweaks variables while your application is running, and remove the code a minute later! Dear ImGui is not just for tweaking values. You can use it to trace a running algorithm by just emitting text commands. You can use it along with your own reflection data to browse your dataset live. You can use it to expose the internals of a subsystem in your engine, to create a logger, an inspection tool, a profiler, a debugger, an entire game making editor/framework, etc.
+### Releases & Changelogs
-Demo Binaries
+See [Releases](https://github.com/ocornut/imgui/releases) page for decorated Changelogs.
-------------
+Reading the changelogs is a good way to keep up to date with the things Dear ImGui has to offer, and maybe will give you ideas of some features that you've been ignoring until now!
-You should be able to build the examples from sources (tested on Windows/Mac/Linux). If you don't, let me know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
+### Demo
 - [imgui-demo-binaries-20190219.zip](http://www.dearimgui.org/binaries/imgui-demo-binaries-20190219.zip) (Windows binaries, Dear ImGui 1.68 built 2019/02/19, master branch, 5 executables)
-The demo applications are unfortunately not yet DPI aware so expect some blurriness on a 4K screen. For DPI awareness in your application, you can load/reload your font at different scale, and scale your Style with `style.ScaleAllSizes()`.
+Calling the `ImGui::ShowDemoWindow()` function will create a demo window showcasing a variety of features and examples. The code is always available for reference in `imgui_demo.cpp`. [Here's how the demo looks](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v167/v167-misc.png).
-Bindings
+You should be able to build the examples from sources. If you don't, let us know! If you want to have a quick look at some Dear ImGui features, you can download Windows binaries of the demo app here:
--------
+- [imgui-demo-binaries-20240105.zip](https://www.dearimgui.com/binaries/imgui-demo-binaries-20240105.zip) (Windows, 1.90.1 WIP, built 2024/01/05, master) or [older binaries](https://www.dearimgui.com/binaries).
-Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading one texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that. If you are an experienced programmer at ease with those concepts, it should take you about an hour to integrate Dear ImGui in your custom engine. Make sure to spend time reading the FAQ, the comments and other documentation!
+The demo applications are not DPI aware so expect some blurriness on a 4K screen. For DPI awareness in your application, you can load/reload your font at a different scale and scale your style with `style.ScaleAllSizes()` (see [FAQ](https://www.dearimgui.com/faq)).
-_NB: those third-party bindings may be more or less maintained, more or less close to the original API (as people who create language bindings sometimes haven't used the C++ API themselves.. for the good reason that they aren't C++ users). Dear ImGui was designed with C++ in mind and some of the subtleties may be lost in translation with other languages. If your language supports it, I would suggest replicating the function overloading and default parameters used in the original, else the API may be harder to use. In doubt, please check the original C++ version first!_
+### Integration
-Languages: (third-party bindings)
+See the [Getting Started](https://github.com/ocornut/imgui/wiki/Getting-Started) guide for details.
 - C: [cimgui](https://github.com/cimgui/cimgui) (2018: now auto-generated! you can use its json output to generate bindings for other languages)
 - C#/.Net: [ImGui.NET](https://github.com/mellinoe/ImGui.NET)
 - ChaiScript: [imgui-chaiscript](https://github.com/JuJuBoSc/imgui-chaiscript)
 - D: [DerelictImgui](https://github.com/Extrawurst/DerelictImgui)
 - Go: [imgui-go](https://github.com/inkyblackness/imgui-go) or [go-imgui](https://github.com/Armored-Dragon/go-imgui)
 - Haxe/hxcpp: [linc_imgui](https://github.com/Aidan63/linc_imgui)
 - Java: [jimgui](https://github.com/ice1000/jimgui)
 - JavaScript: [imgui-js](https://github.com/flyover/imgui-js)
 - Julia: [CImGui.jl](https://github.com/Gnimuc/CImGui.jl)
 - Lua: [LuaJIT-ImGui](https://github.com/sonoro1234/LuaJIT-ImGui), [imgui_lua_bindings](https://github.com/patrickriordan/imgui_lua_bindings) or [lua-ffi-bindings](https://github.com/thenumbernine/lua-ffi-bindings)
 - Odin: [odin-dear_imgui](https://github.com/ThisDrunkDane/odin-dear_imgui)
 - Pascal: [imgui-pas](https://github.com/dpethes/imgui-pas)
 - PureBasic: [pb-cimgui](https://github.com/hippyau/pb-cimgui)
 - Python: [pyimgui](https://github.com/swistakm/pyimgui) or [bimpy](https://github.com/podgorskiy/bimpy)
 - Ruby: [ruby-imgui](https://github.com/vaiorabbit/ruby-imgui)
 - Rust: [imgui-rs](https://github.com/Gekkio/imgui-rs) or [imgui-rust](https://github.com/nsf/imgui-rust)
 - Swift [swift-imgui](https://github.com/mnmly/Swift-imgui)
-Frameworks:
+On most platforms and when using C++, **you should be able to use a combination of the [imgui_impl_xxxx](https://github.com/ocornut/imgui/tree/master/backends) backends without modification** (e.g. `imgui_impl_win32.cpp` + `imgui_impl_dx11.cpp`). If your engine supports multiple platforms, consider using more imgui_impl_xxxx files instead of rewriting them: this will be less work for you, and you can get Dear ImGui running immediately. You can _later_ decide to rewrite a custom backend using your custom engine functions if you wish so.
 - Renderers: DirectX 9/10/11/12, Metal, OpenGL2, OpenGL3+/ES2/ES3, Vulkan: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
 - Platform: GLFW, SDL, Win32, OSX, GLUT: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
 - Framework: Allegro 5, Emscripten, Marmalade: [examples/](https://github.com/ocornut/imgui/tree/master/examples)
 - Unmerged PR: Android: [#421](https://github.com/ocornut/imgui/pull/421)
 - Cinder: [Cinder-ImGui](https://github.com/simongeilfus/Cinder-ImGui)
 - Cocos2d-x: [imguix](https://github.com/c0i/imguix), [#551](https://github.com/ocornut/imgui/issues/551)
 - Flexium: [FlexGUI](https://github.com/DXsmiley/FlexGUI)
 - GML/GameMakerStudio2: [ImGuiGML](https://marketplace.yoyogames.com/assets/6221/imguigml)
 - Irrlicht: [IrrIMGUI](https://github.com/ZahlGraf/IrrIMGUI)
 - Ogre: [ogreimgui](https://bitbucket.org/LMCrashy/ogreimgui/src)
 - OpenFrameworks: [ofxImGui](https://github.com/jvcleave/ofxImGui)
 - OpenSceneGraph/OSG: [gist](https://gist.github.com/fulezi/d2442ca7626bf270226014501357042c)
 - ORX: [ImGuiOrx](https://github.com/thegwydd/ImGuiOrx), [#1843](https://github.com/ocornut/imgui/pull/1843)
 - px_render: [px_render_imgui.h](https://github.com/pplux/px/blob/master/px_render_imgui.h), [#1935](https://github.com/ocornut/imgui/pull/1935)
 - LÖVE+Lua: [love-imgui](https://github.com/slages/love-imgui)
 - Magnum: [ImGuiIntegration](https://doc.magnum.graphics/magnum/namespaceMagnum_1_1ImGuiIntegration.html) ([example](https://doc.magnum.graphics/magnum/examples-imgui.html))
 - NanoRT: [syoyo/imgui](https://github.com/syoyo/imgui/tree/nanort)
 - Qt: [imgui-qt3d](https://github.com/alpqr/imgui-qt3d) / [QOpenGLWindow (qtimgui)](https://github.com/ocornut/imgui/issues/1910) / [QtDirect3D](https://github.com/giladreich/QtDirect3D) / [qt6](https://github.com/alpqr/qvk6/tree/imgui/examples/rhi/imguidemo)
 - SFML: [imgui-sfml](https://github.com/eliasdaler/imgui-sfml)
 - Software renderer: [imgui_software_renderer](https://github.com/emilk/imgui_software_renderer)
 - Unreal Engine 4: [segross/UnrealImGui](https://github.com/segross/UnrealImGui) or [sronsse/UnrealEngine_ImGui](https://github.com/sronsse/UnrealEngine_ImGui)
-For other bindings: see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings/). Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
+Integrating Dear ImGui within your custom engine is a matter of 1) wiring mouse/keyboard/gamepad inputs 2) uploading a texture to your GPU/render engine 3) providing a render function that can bind textures and render textured triangles, which is essentially what Backends are doing. The [examples/](https://github.com/ocornut/imgui/tree/master/examples) folder is populated with applications doing just that: setting up a window and using backends. If you follow the [Getting Started](https://github.com/ocornut/imgui/wiki/Getting-Started) guide it should in theory takes you less than an hour to integrate Dear ImGui.  **Make sure to spend time reading the [FAQ](https://www.dearimgui.com/faq), comments, and the examples applications!**
-Roadmap
+Officially maintained backends/bindings (in repository):
-------
+- Renderers: DirectX9, DirectX10, DirectX11, DirectX12, Metal, OpenGL/ES/ES2, SDL_Renderer, Vulkan, WebGPU.
-Some of the goals for 2019 are:
+- Platforms: GLFW, SDL2/SDL3, Win32, Glut, OSX, Android.
- Finish work on docking, tabs. (see [#2109](https://github.com/ocornut/imgui/issues/2109), in public `docking` branch looking for feedback)
+- Frameworks: Allegro5, Emscripten.
 - Finish work on multiple viewports / multiple OS windows. (see [#1542](https://github.com/ocornut/imgui/issues/1542), in public `docking` branch looking for feedback)
 - Finish work on gamepad/keyboard controls. (see [#787](https://github.com/ocornut/imgui/issues/787))
 - Add an automation and testing system, both to test the library and end-user apps. (see [#435](https://github.com/ocornut/imgui/issues/435))
 - Make Columns better. (they are currently pretty terrible!)
 - Make the examples look better, improve styles, improve font support, make the examples hi-DPI aware.
-Gallery
+[Third-party backends/bindings](https://github.com/ocornut/imgui/wiki/Bindings) wiki page:
-------
+- Languages: C, C# and: Beef, ChaiScript, CovScript, Crystal, D, Go, Haskell, Haxe/hxcpp, Java, JavaScript, Julia, Kotlin, Lobster, Lua, Nim, Odin, Pascal, PureBasic, Python, ReaScript, Ruby, Rust, Swift, Zig...
-User screenshots:
+- Frameworks: AGS/Adventure Game Studio, Amethyst, Blender, bsf, Cinder, Cocos2d-x, Defold, Diligent Engine, Ebiten, Flexium, GML/Game Maker Studio, GLEQ, Godot, GTK3, Irrlicht Engine, JUCE, LÖVE+LUA, Mach Engine, Magnum, Marmalade, Monogame, NanoRT, nCine, Nim Game Lib, Nintendo 3DS/Switch/WiiU (homebrew), Ogre, openFrameworks, OSG/OpenSceneGraph, Orx, Photoshop, px_render, Qt/QtDirect3D, raylib, SFML, Sokol, Unity, Unreal Engine 4/5, UWP, vtk, VulkanHpp, VulkanSceneGraph, Win32 GDI, WxWidgets.
-<br>[Gallery Part 1](https://github.com/ocornut/imgui/issues/123) (Feb 2015 to Feb 2016)
+- Many bindings are auto-generated (by good old [cimgui](https://github.com/cimgui/cimgui) or newer/experimental [dear_bindings](https://github.com/dearimgui/dear_bindings)), you can use their metadata output to generate bindings for other languages.
 <br>[Gallery Part 2](https://github.com/ocornut/imgui/issues/539) (Feb 2016 to Aug 2016)
 <br>[Gallery Part 3](https://github.com/ocornut/imgui/issues/772) (Aug 2016 to Jan 2017)
 <br>[Gallery Part 4](https://github.com/ocornut/imgui/issues/973) (Jan 2017 to Aug 2017)
 <br>[Gallery Part 5](https://github.com/ocornut/imgui/issues/1269) (Aug 2017 to Feb 2018)
 <br>[Gallery Part 6](https://github.com/ocornut/imgui/issues/1607) (Feb 2018 to June 2018)
 <br>[Gallery Part 7](https://github.com/ocornut/imgui/issues/1902) (June 2018 to January 2019)
 <br>[Gallery Part 8](https://github.com/ocornut/imgui/issues/2265) (January 2019 onward)
-Custom engine
+[Useful Extensions/Widgets](https://github.com/ocornut/imgui/wiki/Useful-Extensions) wiki page:
-[![screenshot game](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v149/gallery_TheDragonsTrap-01-thumb.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png)
+- Automation/testing, Text editors, node editors, timeline editors, plotting, software renderers, remote network access, memory editors, gizmos, etc. Notable and well supported extensions include [ImPlot](https://github.com/epezent/implot) and [Dear ImGui Test Engine](https://github.com/ocornut/imgui_test_engine).
-Custom engine
+Also see [Wiki](https://github.com/ocornut/imgui/wiki) for more links and ideas.
 [![screenshot tool](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white_preview.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png)
-Demo window
+### Gallery
 ![screenshot demo](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v167/v167-misc.png)
-[Tracy Profiler](https://bitbucket.org/wolfpld/tracy)
+Examples projects using Dear ImGui: [Tracy](https://github.com/wolfpld/tracy) (profiler), [ImHex](https://github.com/WerWolv/ImHex) (hex editor/data analysis), [RemedyBG](https://remedybg.itch.io/remedybg) (debugger) and [hundreds of others](https://github.com/ocornut/imgui/wiki/Software-using-Dear-ImGui).
 ![tracy profiler](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v167/tracy_profiler.png)
-References
+For more user-submitted screenshots of projects using Dear ImGui, check out the [Gallery Threads](https://github.com/ocornut/imgui/issues/6897)!
 ----------
-The Immediate Mode GUI paradigm may at first appear unusual to some users. This is mainly because "Retained Mode" GUIs have been so widespread and predominant. The following links can give you a better understanding about how Immediate Mode GUIs works.
+For a list of third-party widgets and extensions, check out the [Useful Extensions/Widgets](https://github.com/ocornut/imgui/wiki/Useful-Extensions) wiki page.
 - [Johannes 'johno' Norneby's article](http://www.johno.se/book/imgui.html).
 - [A presentation by Rickard Gustafsson and Johannes Algelind](http://www.cse.chalmers.se/edu/year/2011/course/TDA361/Advanced%20Computer%20Graphics/IMGUI.pdf).
 - [Jari Komppa's tutorial on building an ImGui library](http://iki.fi/sol/imgui/).
 - [Casey Muratori's original video that popularized the concept](https://mollyrocket.com/861).
 - [Nicolas Guillemot's CppCon'16 flash-talk about Dear ImGui](https://www.youtube.com/watch?v=LSRJ1jZq90k).
 - [Thierry Excoffier's Zero Memory Widget](http://perso.univ-lyon1.fr/thierry.excoffier/ZMW/).
-See the [Wiki](https://github.com/ocornut/imgui/wiki) for more references and [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for third-party bindings to different languages and frameworks.
+|  |  |
 |--|--|
 | Custom engine [erhe](https://github.com/tksuoran/erhe) (docking branch)<BR>[![erhe](https://user-images.githubusercontent.com/8225057/190203358-6988b846-0686-480e-8663-1311fbd18abd.jpg)](https://user-images.githubusercontent.com/994606/147875067-a848991e-2ad2-4fd3-bf71-4aeb8a547bcf.png) | Custom engine for [Wonder Boy: The Dragon's Trap](http://www.TheDragonsTrap.com) (2017)<BR>[![the dragon's trap](https://user-images.githubusercontent.com/8225057/190203379-57fcb80e-4aec-4fec-959e-17ddd3cd71e5.jpg)](https://cloud.githubusercontent.com/assets/8225057/20628927/33e14cac-b329-11e6-80f6-9524e93b048a.png) |
 | Custom engine (untitled)<BR>[![editor white](https://user-images.githubusercontent.com/8225057/190203393-c5ac9f22-b900-4d1e-bfeb-6027c63e3d92.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v160/editor_white.png) | Tracy Profiler ([github](https://github.com/wolfpld/tracy))<BR>[![tracy profiler](https://user-images.githubusercontent.com/8225057/190203401-7b595f6e-607c-44d3-97ea-4c2673244dfb.jpg)](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v176/tracy_profiler.png) |
-Support
+### Support, Frequently Asked Questions (FAQ)
 -------
-If you are new to Dear ImGui and have issues with: compiling, linking, adding fonts, wiring inputs, running or displaying Dear ImGui: please post on the Discourse forums: https://discourse.dearimgui.org.
+See: [Frequently Asked Questions (FAQ)](https://github.com/ocornut/imgui/blob/master/docs/FAQ.md) where common questions are answered.
-Otherwise for any other questions, bug reports, requests, feedback, you may post on https://github.com/ocornut/imgui/issues. Please read and fill the New Issue template carefully.
+See: [Getting Started](https://github.com/ocornut/imgui/wiki/Getting-Started) and [Wiki](https://github.com/ocornut/imgui/wiki) for many links, references, articles.
-Private support is available for paying customers.
+See: [Articles about the IMGUI paradigm](https://github.com/ocornut/imgui/wiki#about-the-imgui-paradigm) to read/learn about the Immediate Mode GUI paradigm.
-Frequently Asked Question (FAQ)
+See: [Upcoming Changes](https://github.com/ocornut/imgui/wiki/Upcoming-Changes).
 -------------------------------
-**Where is the documentation?**
+See: [Dear ImGui Test Engine + Test Suite](https://github.com/ocornut/imgui_test_engine) for Automation & Testing.
- This library is poorly documented at the moment and expects of the user to be acquainted with C/C++.
+Getting started? For first-time users having issues compiling/linking/running or issues loading fonts, please use [GitHub Discussions](https://github.com/ocornut/imgui/discussions). For ANY other questions, bug reports, requests, feedback, please post on [GitHub Issues](https://github.com/ocornut/imgui/issues). Please read and fill the New Issue template carefully.
- - Run the examples/ applications and explore them.
+
- - See demo code in imgui_demo.cpp and particularly the ImGui::ShowDemoWindow() function.
+Private support is available for paying business customers (E-mail: _contact @ dearimgui dot com_).
 - The demo covers most features of Dear ImGui, so you can read the code and see its output.
 - See documentation and comments at the top of imgui.cpp + effectively imgui.h.
 - Dozens of standalone example applications using e.g. OpenGL/DirectX are provided in the examples/ folder to explain how to integrate Dear ImGui with your own engine/application.
 - Your programming IDE is your friend, find the type or function declaration to find comments associated to it.
 - We obviously needs better documentation! Consider contributing or becoming a [Patron](http://www.patreon.com/imgui) to promote this effort.
 **Which version should I get?**
-I occasionally tag [Releases](https://github.com/ocornut/imgui/releases) but it is generally safe and recommended to sync to master/latest. The library is fairly stable and regressions tend to be fixed fast when reported.
+We occasionally tag [Releases](https://github.com/ocornut/imgui/releases) (with nice releases notes) but it is generally safe and recommended to sync to latest `master` or `docking` branch. The library is fairly stable and regressions tend to be fixed fast when reported. Advanced users may want to use the `docking` branch with [Multi-Viewport](https://github.com/ocornut/imgui/issues/1542) and [Docking](https://github.com/ocornut/imgui/issues/2109) features. This branch is kept in sync with master regularly.
 You may also peak at the [Multi-Viewport](https://github.com/ocornut/imgui/issues/1542) and [Docking](https://github.com/ocornut/imgui/issues/2109) features in the `docking` branch. Many projects are using this branch and it is kept in sync with master regularly.
 **Who uses Dear ImGui?**
-See the [Quotes](https://github.com/ocornut/imgui/wiki/Quotes) and [Software using dear imgui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) Wiki pages for a list of games/software which are publicly known to use dear imgui. Please add yours if you can!
+See the [Quotes](https://github.com/ocornut/imgui/wiki/Quotes), [Sponsors](https://github.com/ocornut/imgui/wiki/Sponsors), and [Software using Dear ImGui](https://github.com/ocornut/imgui/wiki/Software-using-dear-imgui) Wiki pages for an idea of who is using Dear ImGui. Please add your game/software if you can! Also, see the [Gallery Threads](https://github.com/ocornut/imgui/issues/6897)!
-**Why the odd dual naming, "Dear ImGui" vs "ImGui"?**
+How to help
-
+-----------
 The library started its life as "ImGui" due to the fact that I didn't give it a proper name when I released 1.0 and had no particular expectation that it would take off. However, the term IMGUI (immediate-mode graphical user interface) was coined before and is being used in variety of other situations (e.g. Unity uses it own implementation of the IMGUI paradigm). To reduce this ambiguity without affecting existing codebases, I have decided on an alternate, longer name "Dear ImGui" that people can use to refer to this specific library. Please try to refer to this library as "Dear ImGui".
 **How can I tell whether to dispatch mouse/keyboard to imgui or to my application?**
 <br>**How can I display an image? What is ImTextureID, how does it works?**
 <br>**Why are multiple widgets reacting when I interact with a single one? How can I have multiple widgets with the same label or with an empty label? A primer on labels and the ID Stack...**
 <br>**How can I use my own math types instead of ImVec2/ImVec4?**
 <br>**How can I load a different font than the default?**
 <br>**How can I easily use icons in my application?**
 <br>**How can I load multiple fonts?**
 <br>**How can I display and input non-latin characters such as Chinese, Japanese, Korean, Cyrillic?** ([example](https://github.com/ocornut/imgui/wiki/Loading-Font-Example))
 <br>**How can I interact with standard C++ types (such as std::string and std::vector)?**
 <br>**How can I use the drawing facilities without an Dear ImGui window? (using ImDrawList API)**
 <br>**How can I use this without a mouse, without a keyboard or without a screen? (gamepad, input share, remote display)**
 <br>**I integrated Dear ImGui in my engine and the text or lines are blurry..**
 <br>**I integrated Dear ImGui in my engine and some elements are disappearing when I move windows around..**
 <br>**How can I help?**
 See the FAQ in [imgui.cpp](https://github.com/ocornut/imgui/blob/master/imgui.cpp) for answers.
 **Can you create elaborate/serious tools with Dear ImGui?**
 Yes. People have written game editors, data browsers, debuggers, profilers and all sort of non-trivial tools with the library. In my experience the simplicity of the API is very empowering. Your UI runs close to your live data. Make the tools always-on and everybody in the team will be inclined to create new tools (as opposed to more "offline" UI toolkits where only a fraction of your team effectively creates tools). The list of sponsors below is also an indicator that serious game teams have been using the library.
 Dear ImGui is very programmer centric and the immediate-mode GUI paradigm might requires you to readjust some habits before you can realize its full potential. Dear ImGui is about making things that are simple, efficient and powerful.
 **Can you reskin the look of Dear ImGui?**
 You can alter the look of the interface to some degree: changing colors, sizes, padding, rounding, fonts. However, as Dear ImGui is designed and optimized to create debug tools, the amount of skinning you can apply is limited. There is only so much you can stray away from the default look and feel of the interface. Below is a screenshot from [LumixEngine](https://github.com/nem0/LumixEngine) with custom colors + a docking/tabs extension (both of which you can find in the Issues section and will eventually be merged):
 ![LumixEngine](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/v151/lumix-201710-rearranged.png)
 **Why using C++ (as opposed to C)?**
 Dear ImGui takes advantage of a few C++ languages features for convenience but nothing anywhere Boost-insanity/quagmire. Dear ImGui does NOT require C++11 so it can be used with most old C++ compilers. Dear ImGui doesn't use any C++ header file. Language-wise, function overloading and default parameters are used to make the API easier to use and code more terse. Doing so I believe the API is sitting on a sweet spot and giving up on those features would make the API more cumbersome. Other features such as namespace, constructors and templates (in the case of the ImVector<> class) are also relied on as a convenience.
 There is an auto-generated [c-api for Dear ImGui (cimgui)](https://github.com/cimgui/cimgui) by Sonoro1234 and Stephan Dilly. It is designed for creating binding to other languages. If possible, I would suggest using your target language functionalities to try replicating the function overloading and default parameters used in C++ else the API may be harder to use. Also see [Bindings](https://github.com/ocornut/imgui/wiki/Bindings) for various third-party bindings.
 Support dear imgui
 ------------------
 **How can I help?**
- You may participate in the [Discourse forums](https://discourse.dearimgui.org) and the GitHub [issues tracker](https://github.com/ocornut/imgui/issues).
+- See [GitHub Forum/Issues](https://github.com/ocornut/imgui/issues).
- You may help with development and submit pull requests! Please understand that by submitting a PR you are also submitting a request for the maintainer to review your code and then take over its maintenance forever. PR should be crafted both in the interest in the end-users and also to ease the maintainer into understanding and accepting it.
+- You may help with development and submit pull requests! Please understand that by submitting a PR you are also submitting a request for the maintainer to review your code and then take over its maintenance forever. PR should be crafted both in the interest of the end-users and also to ease the maintainer into understanding and accepting it.
 - See [Help wanted](https://github.com/ocornut/imgui/wiki/Help-Wanted) on the [Wiki](https://github.com/ocornut/imgui/wiki/) for some more ideas.
- Have your company financially support this project.
+- Be a [sponsor](https://github.com/ocornut/imgui/wiki/Sponsors)! Have your company financially support this project via invoiced sponsors/maintenance or by buying a license for [Dear ImGui Test Engine](https://github.com/ocornut/imgui_test_engine) (please reach out: omar AT dearimgui DOT com).
-**How can I help financing further development of Dear ImGui?**
+Sponsors
 --------
-Your contributions are keeping this project alive. The library is free as in freedom, but continued maintenance and development are a full-time endeavor. In addition to maintenance and stability there are many desirable features yet to be added. If your company is using dear imgui, please consider reaching out for financial support. If you are an individual using dear imgui, please consider donating via Patreon or PayPal. Thank you!
+Ongoing Dear ImGui development is and has been financially supported by users and private sponsors.
 <BR>Please see the **[detailed list of current and past Dear ImGui supporters](https://github.com/ocornut/imgui/wiki/Sponsors)** for details.
 <BR>From November 2014 to December 2019, ongoing development has also been financially supported by its users on Patreon and through individual donations.
-Individuals/hobbyists: support continued maintenance and development via the monthly Patreon:
+**THANK YOU to all past and present supporters for helping to keep this project alive and thriving!**
 <br>&nbsp;&nbsp;[![Patreon](https://raw.githubusercontent.com/wiki/ocornut/imgui/web/patreon_01.png)](http://www.patreon.com/imgui)
-Individuals/hobbyists: support continued maintenance and development via PayPal:
+Dear ImGui is using software and services provided free of charge for open source projects:
-<br>&nbsp;&nbsp;[![PayPal](https://www.paypalobjects.com/en_US/i/btn/btn_donate_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=WGHNC6MBFLZ2S)
+- [PVS-Studio](https://www.viva64.com/en/b/0570/) for static analysis.
-
+- [GitHub actions](https://github.com/features/actions) for continuous integration systems.
-Businesses: support continued maintenance and development via support contracts or sponsoring:
+- [OpenCppCoverage](https://github.com/OpenCppCoverage/OpenCppCoverage) for code coverage analysis.
 <br>&nbsp;&nbsp;_E-mail: omarcornut at gmail dot com_
 Ongoing dear imgui development is financially supported by users and private sponsors, recently:
 **Platinum-chocolate sponsors**
 - **Blizzard Entertainment**.
 **Double-chocolate sponsors**
 - Media Molecule, Mobigame, Aras Pranckevičius, Greggman, DotEmu, Nadeo, Supercell, Runner, Aiden Koss, Kylotonn.
 **Salty caramel supporters**
 - Recognition Robotics, ikrima, Geoffrey Evans, Mercury Labs, Singularity Demo Group, Lionel Landwerlin, Ron Gilbert, Brandon Townsend, Nikhil Deshpande, Cort Stratton, drudru, Harfang 3D, Jeff Roberts, Rainway inc, Ondra Voves, Mesh Consultants, Unit 2 Games.
 **Caramel supporters**
 - Jerome Lanquetot, Daniel Collin, Ctrl Alt Ninja, Neil Henning, Neil Blakey-Milner, Aleksei, NeiloGD, Eric, Game Atelier, Vincent Hamm, Colin Riley, Sergio Gonzales, Andrew Berridge, Roy Eltham, Game Preservation Society, Josh Faust, Martin Donlon, Codecat, Doug McNabb, Emmanuel Julien, Guillaume Chereau, Jeffrey Slutter, Jeremiah Deckard, r-lyeh, Nekith, Joshua Fisher, Malte Hoffmann, Mustafa Karaalioglu, Merlyn Morgan-Graham, Per Vognsen, Fabian Giesen, Jan Staubach, Matt Hargett, John Shearer, Jesse Chounard, kingcoopa, Jonas Bernemann, Johan Andersson, Michael Labbe, Tomasz Golebiowski, Louis Schnellbach, Jimmy Andrews, Bojan Endrovski, Robin Berg Pettersen, Rachel Crawford, Andrew Johnson, Sean Hunter, Jordan Mellow, Nefarius Software Solutions, Laura Wieme, Robert Nix, Mick Honey, Steven Kah Hien Wong, Bartosz Bielecki, Oscar Penas, A M, Liam Moynihan, Artometa, Mark Lee, Dimitri Diakopoulos, Pete Goodwin, Johnathan Roatch, nyu lea, Oswald Hurlem.
 And all other past and present supporters; THANK YOU!
 (Please contact me if you would like to be added or removed from this list)
 Credits
 -------
-Developed by [Omar Cornut](http://www.miracleworld.net) and every direct or indirect contributors to the GitHub. The early version of this library was developed with the support of [Media Molecule](http://www.mediamolecule.com) and first used internally on the game [Tearaway](http://tearaway.mediamolecule.com).
+Developed by [Omar Cornut](https://www.miracleworld.net) and every direct or indirect [contributors](https://github.com/ocornut/imgui/graphs/contributors) to the GitHub. The early version of this library was developed with the support of [Media Molecule](https://www.mediamolecule.com) and first used internally on the game [Tearaway](https://tearaway.mediamolecule.com) (PS Vita).
-I first discovered the IMGUI paradigm at [Q-Games](http://www.q-games.com) where Atman Binstock had dropped his own simple implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating and improving it.
+Recurring contributors include Rokas Kupstys [@rokups](https://github.com/rokups) (2020-2022): a good portion of work on automation system and regression tests now available in [Dear ImGui Test Engine](https://github.com/ocornut/imgui_test_engine).
-Embeds [ProggyClean.ttf](http://upperbounds.net) font by Tristan Grimmer (MIT license).
+Sponsoring, maintenance/support contracts and other B2B transactions are hosted and handled by [Disco Hello](https://www.discohello.com).
-Embeds [stb_textedit.h, stb_truetype.h, stb_rectpack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
+Omar: "I first discovered the IMGUI paradigm at [Q-Games](https://www.q-games.com) where Atman Binstock had dropped his own simple implementation in the codebase, which I spent quite some time improving and thinking about. It turned out that Atman was exposed to the concept directly by working with Casey. When I moved to Media Molecule I rewrote a new library trying to overcome the flaws and limitations of the first one I've worked with. It became this library and since then I have spent an unreasonable amount of time iterating and improving it."
-Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. And everybody posting feedback, questions and patches on the GitHub.
+Embeds [ProggyClean.ttf](https://www.proggyfonts.net) font by Tristan Grimmer (MIT license).
 <br>Embeds [stb_textedit.h, stb_truetype.h, stb_rect_pack.h](https://github.com/nothings/stb/) by Sean Barrett (public domain).
 Inspiration, feedback, and testing for early versions: Casey Muratori, Atman Binstock, Mikko Mononen, Emmanuel Briney, Stefan Kamoda, Anton Mikhailov, Matt Willis. Also thank you to everyone posting feedback, questions and patches on GitHub.
 License
 -------
--- a/dep/imgui/TODO.txt
+++ b/dep/imgui/TODO.txt
@ -1,92 +1,94 @@
 dear imgui
 ISSUES & TODO LIST
-Issue numbers (#) refer to github issues listed at https://github.com/ocornut/imgui/issues/XXXX
+Issue numbers (#) refer to GitHub issues listed at https://github.com/ocornut/imgui/issues/XXXX
 THIS LIST IS NOT WELL MAINTAINED. MOST OF THE WORK HAPPENS ON GITHUB NOWADAYS.
 The list below consist mostly of ideas noted down before they are requested/discussed by users (at which point they usually exist on the github issue tracker).
 It's mostly a bunch of personal notes, probably incomplete. Feel free to query if you have any questions.
- - doc/test: add a proper documentation+regression testing system (#435)
+ - doc: add a proper documentation system (maybe relying on automation? #435)
- - doc/test: checklist app to verify binding/integration of imgui (test inputs, rendering, callback, etc.).
+ - doc: checklist app to verify backends/integration of imgui (test inputs, rendering, callback, etc.).
 - doc/tips: tips of the day: website? applet in imgui_club?
 - doc/wiki: work on the wiki https://github.com/ocornut/imgui/wiki
- - window: preserve/restore relative focus ordering (persistent or not) (#2304) -> also see docking reference to same #.
+ - window: preserve/restore relative focus ordering (persistent or not), and e.g. of multiple reappearing windows (#2304) -> also see docking reference to same #.
 - window: calling SetNextWindowSize() every frame with <= 0 doesn't do anything, may be useful to allow (particularly when used for a single axis). (#690)
 - window: add a way for very transient windows (non-saved, temporary overlay over hundreds of objects) to "clean" up from the global window list. perhaps a lightweight explicit cleanup pass.
 - window: auto-fit feedback loop when user relies on any dynamic layout (window width multiplier, column) appears weird to end-user. clarify.
 - window: allow resizing of child windows (possibly given min/max for each axis?.)
 - window: background options for child windows, border option (disable rounding).
 - window: begin with *p_open == false could return false.
 - window: get size/pos helpers given names (see discussion in #249)
 - window: a collapsed window can be stuck behind the main menu bar?
 - window: when window is very small, prioritize resize button over close button.
- - window: detect extra End() call that pop the "Debug" window out and assert at End() call site instead of at end of frame.
+ - window: double-clicking on title bar to minimize isn't consistent interaction, perhaps move to single-click on left-most collapse icon?
 - window: increase minimum size of a window with menus or fix the menu rendering so that it doesn't look odd.
 - window: double-clicking on title bar to minimize isn't consistent, perhaps move to single-click on left-most collapse icon?
 - window: expose contents size. (#1045)
 - window: using SetWindowPos() inside Begin() and moving the window with the mouse reacts a very ugly glitch. We should just defer the SetWindowPos() call.
 - window: GetWindowSize() returns (0,0) when not calculated? (#1045)
 - window: investigate better auto-positioning for new windows.
 - window: top most window flag? more z-order contrl? (#2574)
 - window/size: manually triggered auto-fit (double-click on grip) shouldn't resize window down to viewport size?
 - window/size: how to allow to e.g. auto-size vertically to fit contents, but be horizontally resizable? Assuming SetNextWindowSize() is modified to treat -1.0f on each axis as "keep as-is" (would be good but might break erroneous code): Problem is UpdateWindowManualResize() and lots of code treat (window->AutoFitFramesX > 0 || window->AutoFitFramesY > 0) together.
 - window/opt: freeze window flag: if not focused/hovered, return false, render with previous ImDrawList. and/or reduce refresh rate. -> this may require enforcing that it is illegal to submit contents if Begin returns false.
- - window/child: the first draw command of a child window could be moved into the current draw command of the parent window (unless child+tooltip?).
+ - window/child: background options for child windows, border option (disable rounding).
 - window/child: allow resizing of child windows (possibly given min/max for each axis?.)
 - window/child: allow SetNextWindowContentSize() to work on child windows.
 - window/clipping: some form of clipping when DisplaySize (or corresponding viewport) is zero.
- - window/tab: add a way to signify that a window or docked window requires attention (e.g. blinking title bar).
+ - window/tabbing: add a way to signify that a window or docked window requires attention (e.g. blinking title bar, trying to click behind a modal).
 - window/id_stack: add e.g. window->GetIDFromPath() with support for leading / and ../ (#1390, #331) -> model from test engine.
 ! scrolling: exposing horizontal scrolling with Shift+Wheel even when scrollbar is disabled expose lots of issues (#2424, #1463)
 - scrolling: while holding down a scrollbar, try to keep the same contents visible (at least while not moving mouse)
 - scrolling: allow immediately effective change of scroll after Begin() if we haven't appended items yet.
- - scrolling/clipping: separator on the initial position of a window is not visible (cursorpos.y <= clippos.y). (2017-08-20: can't repro)
+ - scrolling: forward mouse wheel scrolling to parent window when at the edge of scrolling limits? (useful for listbox,tables?)
- - scrolling/style: shadows on scrollable areas to denote that there is more contents
+ - scrolling/style: shadows on scrollable areas to denote that there is more contents (see e.g. DaVinci Resolve ui)
- - drawdata: make it easy to clone (or swap?) a ImDrawData so user can easily save that data if they use threaded rendering.
+ - drawdata: make it easy to deep-copy (or swap?) a full ImDrawData so user can easily save that data if they use threaded rendering. (e.g. #2646)
- ! drawlist: add calctextsize func to facilitate consistent code from user pov (currently need to use ImGui or ImFont alternatives!)
+ ! drawlist: add CalcTextSize() func to facilitate consistent code from user pov (currently need to use ImGui or ImFont alternatives!)
- - drawlist: end-user probably can't call Clear() directly because we expect a texture to be pushed in the stack.
+ - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command). (WIP branch)
 - drawlist: maintaining bounding box per command would allow to merge draw command when clipping isn't relied on (typical non-scrolling window or non-overflowing column would merge with previous command).
 - drawlist: primitives/helpers to manipulate vertices post submission, so e.g. a quad/rect can be resized to fit later submitted content, _without_ using the ChannelSplit api
 - drawlist: make it easier to toggle AA per primitive, so we can use e.g. non-AA fill + AA borders more naturally
 - drawlist: non-AA strokes have gaps between points (#593, #288), glitch especially on RenderCheckmark() and ColorPicker4().
 - drawlist: would be good to be able to deep copy of ImDrawData (we have a deep copy of ImDrawList now).
 - drawlist: rendering: provide a way for imgui to output to a single/global vertex buffer, re-order indices only at the end of the frame (ref: https://gist.github.com/floooh/10388a0afbe08fce9e617d8aefa7d302)
 - drawlist: callback: add an extra void* in ImDrawCallback to allow passing render-local data to the callback (would break API).
 - drawlist: AddRect vs AddLine position confusing (#2441)
 - drawlist: channel splitter should be external helper and not stored in ImDrawList.
 - drawlist/opt: store rounded corners in texture to use 1 quad per corner (filled and wireframe) to lower the cost of rounding. (#1962)
 - drawlist/opt: AddRect() axis aligned pixel aligned (no-aa) could use 8 triangles instead of 16 and no normal calculation.
 - drawlist/opt: thick AA line could be doable in same number of triangles as 1.0 AA line by storing gradient+full color in atlas.
- - main: find a way to preserve relative orders of multiple reappearing windows (so an app toggling between "modes" e.g. fullscreen vs all tools) won't lose relative ordering.
+ - items: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
 - main: IsItemHovered() make it more consistent for various type of widgets, widgets with multiple components, etc. also effectively IsHovered() region sometimes differs from hot region, e.g tree nodes
 - main: IsItemHovered() info stored in a stack? so that 'if TreeNode() { Text; TreePop; } if IsHovered' return the hover state of the TreeNode?
 - main: rename the main "Debug" window to avoid ID collision with user who may want to use "Debug" with specific flags.
 - widgets: display mode: widget-label, label-widget (aligned on column or using fixed size), label-newline-tab-widget etc. (#395)
 - widgets: clean up widgets internal toward exposing everything and stabilizing imgui_internals.h.
- - widgets: add visuals for Disabled/ReadOnly mode and expose publicly (#211)
+ - widgets: add always-allow-overlap mode. This should perhaps be the default? one problem is that highlight after mouse-wheel scrolling gets deferred, makes scrolling more flickery.
 - widgets: add always-allow-overlap mode. This should perhaps be the default.
 - widgets: start exposing PushItemFlag() and ImGuiItemFlags
 - widgets: alignment options in style (e.g. center Selectable, Right-Align within Button, etc.) #1260
 - widgets: activate by identifier (trigger button, focus given id)
- - widgets: a way to represent "mixed" values, so e.g. all values replaced with **, including check-boxes, colors, etc. with support for multi-components widgets (e.g. SliderFloat3, make only "Y" mixed)
+ - widgets: custom glyph/shapes replacements for stock sapes. (also #6090 #2431 #2235 #6517)
- - widgets: selectable: generic BeginSelectable()/EndSelectable() mechanism.
+ - widgets: coloredit: keep reporting as active when picker is on?
- - widgets: selectable: a way to visualize partial/mixed selection (e.g. parent tree node has children with mixed selection)
+ - widgets: group/scalarn functions: expose more per-component information. e.g. store NextItemData.ComponentIdx set by scalarn function, groups can expose them back somehow.
 - selectable: using (size.x == 0.0f) and (SelectableTextAlign.x > 0.0f) followed by SameLine() is currently not supported.
 - selectable: generic BeginSelectable()/EndSelectable() mechanism. (work out alongside range-select branch)
 - selectable: a way to visualize partial/mixed selection (e.g. parent tree node has children with mixed selection)
- - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile.
+ - input text: clean up the mess caused by converting UTF-8 <> wchar. the code is rather inefficient right now and super fragile. (WIP branch)
 - input text: preserve scrolling when unfocused?
 - input text: reorganize event handling, allow CharFilter to modify buffers, allow multiple events? (#541)
 - input text: expose CursorPos in char filter event (#816)
- - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return NULL if not active.
+ - input text: try usage idiom of using InputText with data only exposed through get/set accessors, without extraneous copy/alloc. (#3009)
 - input text: access public fields via a non-callback API e.g. InputTextGetState("xxx") that may return nullptr if not active (available in internals)
 - input text: flag to disable live update of the user buffer (also applies to float/int text input) (#701)
 - input text: hover tooltip could show unclamped text
 - input text: support for INSERT key to toggle overwrite mode. currently disabled because stb_textedit behavior is unsatisfactory on multi-line. (#2863)
 - input text: option to Tab after an Enter validation.
 - input text: add ImGuiInputTextFlags_EnterToApply? (off #218)
 - input text: easier ways to update buffer (from source char*) while owned. preserve some sort of cursor position for multi-line text.
 - input text: add discard flag (e.g. ImGuiInputTextFlags_DiscardActiveBuffer) or make it easier to clear active focus for text replacement during edition (#725)
 - input text: display bug when clicking a drag/slider after an input text in a different window has all-selected text (order dependent). actually a very old bug but no one appears to have noticed it.
 - input text: allow centering/positioning text so that ctrl+clicking Drag or Slider keeps the textual value at the same pixel position.
- - input text: decorrelate layout from inputs - e.g. what's the easiest way to implement a nice IP/Mac address input editor?
+ - input text: decorrelate display layout from inputs with custom template - e.g. what's the easiest way to implement a nice IP/Mac address input editor?
- - input text: global callback system so user can plug in an expression evaluator easily.
+ - input text: global callback system so user can plug in an expression evaluator easily. (#1691)
 - input text: force scroll to end or scroll to a given line/contents (so user can implement a log or a search feature)
 - input text: a way to preview completion (e.g. disabled text completing from the cursor)
 - input text: a side bar that could e.g. preview where errors are. probably left to the user to draw but we'd need to give them the info there.
 - input text: a way for the user to provide syntax coloring.
 - input text: Shift+TAB with ImGuiInputTextFlags_AllowTabInput could eat preceding blanks, up to tab_count.
 - input text multi-line: don't directly call AddText() which does an unnecessary vertex reserve for character count prior to clipping. and/or more line-based clipping to AddText(). and/or reorganize TextUnformatted/RenderText for more efficiency for large text (e.g TextUnformatted could clip and log separately, etc).
- - input text multi-line: support for cut/paste without selection (cut/paste the current line)
+ - input text multi-line: support for copy/cut without selection (copy/cut current line?)
 - input text multi-line: line numbers? status bar? (follow up on #200)
 - input text multi-line: behave better when user changes input buffer while editing is active (even though it is illegal behavior). namely, the change of buffer can create a scrollbar glitch (#725)
 - input text multi-line: better horizontal scrolling support (#383, #1224)
@ -94,192 +96,164 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
 - input number: optional range min/max for Input*() functions
 - input number: holding [-]/[+] buttons could increase the step speed non-linearly (or user-controlled)
 - input number: use mouse wheel to step up/down
 - input number: applying arithmetics ops (+,-,*,/) messes up with text edit undo stack.
 - layout: helper or a way to express ImGui::SameLine(ImGui::GetCursorStartPos().x + ImGui::CalcItemWidth() + ImGui::GetStyle().ItemInnerSpacing.x); in a simpler manner.
- - layout: generalization of the above: a concept equivalent to word processor ruler tab stop ~ mini columns (position in X, no clipping implied) (vaguely relate to #267, #395, also what is used internally for menu items)
+ - layout, font: horizontal tab support, A) text mode: forward only tabs (e.g. every 4 characters/N pixels from pos x1), B) manual mode: explicit tab stops acting as mini columns, no clipping (for menu items, many kind of uses, also vaguely relate to #267, #395)
 - layout: horizontal layout helper (#97)
 - layout: horizontal flow until no space left (#404)
 - layout: more generic alignment state (left/right/centered) for single items?
 - layout: clean up the InputFloatN/SliderFloatN/ColorEdit4 layout code. item width should include frame padding.
 - layout: BeginGroup() needs a border option. (~#1496)
 - layout: vertical alignment of mixed height items (e.g. buttons) within a same line (#1284)
 - layout: null layout mode were items are not rendered but user can query GetItemRectMin()/Max/Size.
 - layout: (R&D) local multi-pass layout mode.
 - layout: (R&D) bind authored layout data (created by an off-line tool), items fetch their pos/size at submission, self-optimize data structures to stable linear access.
- - columns: sizing policy (e.g. for each column: fixed size, %, fill, distribute default size among fills) (#513, #125)
+ - tables: see https://github.com/ocornut/imgui/issues/2957#issuecomment-569726095
- - columns: add a conditional parameter to SetColumnOffset() (#513, #125)
+
- - columns: headers. re-orderable. (#513, #125)
+ - group: BeginGroup() needs a border option. (~#1496)
- - columns: optional sorting modifiers (up/down), sort list so sorting can be done multi-criteria. notify user when sort order changed.
+ - group: IsItemHovered() after EndGroup() covers whole AABB rather than the intersection of individual items. Is that desirable?
- - columns: option to alternate background colors on odd/even scanlines.
+ - group: merge deactivation/activation within same group (fwd WasEdited flag). (#2550)
 - columns: allow columns to recurse.
 - columns: allow a same columns set to be interrupted by e.g. CollapsingHeader and resume with columns in sync when moving them.
 - columns: separator function or parameter that works within the column (currently Separator() bypass all columns) (#125)
 - columns: flag to add horizontal separator above/below?
 - columns/layout: setup minimum line height (equivalent of automatically calling AlignFirstTextHeightToWidgets)
 !- color: the color conversion helpers/types are a mess and needs sorting out.
 - color: (api breaking) ImGui::ColorConvertXXX functions should be loose ImColorConvertXX to match imgui_internals.h
- - plot: full featured plot/graph api w/ scrolling, zooming etc. all bell & whistle. why not!
+ - plot: full featured plot/graph api w/ scrolling, zooming etc. --> ImPlot
- - plot: PlotLines() should use the polygon-stroke facilities, less vertices (currently issues with averaging normals)
+ - (plot: deleted all other todo lines on 2023-06-28)
 - plot: make it easier for user to draw extra stuff into the graph (e.g: draw basis, highlight certain points, 2d plots, multiple plots)
 - plot: "smooth" automatic scale over time, user give an input 0.0(full user scale) 1.0(full derived from value)
 - plot: option/feature: draw the zero line
 - plot: option/feature: draw grid, vertical markers
 - plot: option/feature: draw unit
 - plot: add a helper e.g. Plot(char* label, float value, float time_span=2.0f) that stores values and Plot them for you - probably another function name. and/or automatically allow to plot ANY displayed value (more reliance on stable ID)
 - clipper: ability to force display 1 item in the list would be convenient (for patterns where we need to set active id etc.)
 - clipper: ability to disable the clipping through a simple flag/bool.
 - clipper: ability to run without knowing full count in advance.
 - clipper: horizontal clipping support. (#2580)
- - splitter/separator: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
+ - separator: expose flags (#759)
 - separator: take indent into consideration (optional)
 - separator: width, thickness, centering (#1643, #2657)
 - splitter: formalize the splitter idiom into an official api (we want to handle n-way split) (#319)
- - dock: merge docking branch (#2109)
+ - docking: merge docking branch (#2109)
 - dock: B: ordering currently held in tab bar should be implicitly held by windows themselves (also see #2304)
 - dock: B- tab bar: the order/focus restoring code could be part of TabBar and not DockNode? (#8)
 - dock: B~ rework code to be able to lazily create tab bar instance in a single place. The _Unsorted tab flag could be replacing a trailing-counter in DockNode?
 - dock: B~ fully track windows/settings reference in dock nodes. perhaps find a representation that allows facilitate use of dock builder functions.
 - dock: B~ Unreal style document system (requires low-level controls of dockspace serialization fork/copy/delete). this is mostly working but the DockBuilderXXX api are not exposed/finished.
 - dock: B: when docking outer, perform size locking on neighbors nodes the same way we do it with splitters, so other nodes are not resized.
 - dock: B~ central node resizing behavior incorrect.
 - dock: B: changing title font/style per-window is not supported as dock nodes are created in NewFrame.
 - dock: B- dock node inside its own viewports creates 1 temporary viewport per window on startup before ditching them (doesn't affect the user nor request platform windows to be created, but unnecessary)
 - dock: B- resize sibling locking behavior may be less desirable if we merged same-axis sibling in a same node level?
 - dock: B- single visible node part of a hidden split hierarchy (OnlyNodeWithWindows != NULL) should show a normal title bar (not a tab bar)
 - dock: B~ SetNextWindowDock() calls (with conditional) -> defer everything to DockContextUpdate (repro: Documents->[X]Windows->Dock 1 elsewhere->Click Redock All
 - dock: B~ tidy up tab list popup buttons features (available with manual tab-bar, see ImGuiTabBarFlags_NoTabListPopupButton code, not used by docking nodes)
 - dock: B- SetNextWindowDockId(0) with a second Begin() in the frame will asserts
 - dock: B: resize grip drawn in host window typically appears under scrollbar.
 - dock: B- SetNextWindowFocus() doesn't seem to apply if the window is hidden this frame, need repro (#4)
 - dock: B- resizing a dock tree small currently has glitches (overlapping collapse and close button, etc.)
 - dock: B- dpi: look at interaction with the hi-dpi and multi-dpi stuff.
 - dock: B- tab bar: appearing on first frame with a dumb layout would do less harm that not appearing? (when behind dynamic branch) or store titles + render in EndTabBar()
 - dock: B- tab bar: make selected tab always shows its full title?
 - dock: B- nav: design interactions so nav controls can dock/undock
 - dock: B- dockspace: flag to lock the dock tree and/or sizes (ImGuiDockNodeFlags_Locked?)
 - dock: B- reintroduce collapsing a floating dock node. also collapsing a docked dock node!
 - dock: B- allow dragging a non-floating dock node by clicking on the title-bar-looking section (not just the collapse/menu button)
 - dock: B- option to remember undocked window size? (instead of keeping their docked size) (relate to #2104)
 - dock: C- nav: CTRL+TAB highlighting tabs shows the mismatch between focus-stack and tab-order (not visible in VS because it doesn't highlight the tabs)
 - dock: C- after a dock/undock, the Scrollbar Status update in Begin() should use an updated e.g. size_y_for_scrollbars to avoid a 1 frame scrollbar flicker.
 - tabs: "there is currently a problem because TabItem() will try to submit their own tooltip after 0.50 second, and this will have the effect of making your tooltip flicker once." -> tooltip priority work (WIP branch)
 - tabs: make EndTabBar fail if users doesn't respect BeginTabBar return value, for consistency/future-proofing.
 - tabs: persistent order/focus in BeginTabBar() api (#261, #351)
 - tabs: explicit api (even if internal) to cleanly manipulate tab order.
 - button: provide a button that looks framed. (?)
 - image/image button: misalignment on padded/bordered button?
 - image/image button: parameters are confusing, image() has tint_col,border_col whereas imagebutton() has bg_col/tint_col. Even thou they are different parameters ordering could be more consistent. can we fix that?
 - image button: not taking an explicit id can be problematic. (#2464, #1390)
 - slider/drag: ctrl+click when format doesn't include a % character.. disable? display underlying value in default format? (see InputScalarAsWidgetReplacement)
 - slider: allow using the [-]/[+] buttons used by InputFloat()/InputInt()
 - slider: initial absolute click is imprecise. change to relative movement slider (same as scrollbar). (#1946)
 - slider: add dragging-based widgets to edit values with mouse (on 2 axises), saving screen real-estate.
 - slider: tint background based on value (e.g. v_min -> v_max, or use 0.0f either side of the sign)
 - slider: relative dragging? + precision dragging
 - slider: step option (#1183)
- - slider style: fill % of the bar instead of positioning a drag.
+ - slider: style: fill % of the bar instead of positioning a drag.
 - knob: rotating knob widget (#942)
- - drag float: power/logarithmic slider and drags are weird. (#1316)
+ - drag float: support for reversed drags (min > max) (removed is_locked, also see fdc526e)
 - drag float: up/down axis
 - drag float: power != 0.0f with current value being outside the range keeps the value stuck.
 - drag float: added leeway on edge (e.g. a few invisible steps past the clamp limits)
- - combo: use clipper: make it easier to disable clipper with a single flag.
+ - combo: use clipper.
- - combo: flag for BeginCombo to not return true when unchanged (#1182)
+ - combo: a way/helper to customize the combo preview (#1658) -> experimental BeginComboPreview()
 - combo: a way/helper to customize the combo preview (#1658)
 - combo/listbox: keyboard control. need InputText-like non-active focus + key handling. considering keyboard for custom listbox (pr #203)
- - listbox: refactor and clean the begin/end api
+ - listbox: multiple selection (WIP range-select branch)
 - listbox: multiple selection.
 - listbox: unselect option (#1208)
- - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (wip stash)
+ - listbox: make it easier/more natural to implement range-select (need some sort of info/ref about the last clicked/focused item that user can translate to an index?) (WIP range-select branch)
 - listbox: user may want to initial scroll to focus on the one selected value?
 - listbox: expose hovered item for a basic ListBox
 - listbox: keyboard navigation.
 - listbox: disable capturing mouse wheel if the listbox has no scrolling. (#1681)
 - listbox: scrolling should track modified selection.
 - listbox: future api should allow to enable horizontal scrolling (#2510)
 !- popups/menus: clarify usage of popups id, how MenuItem/Selectable closing parent popups affects the ID, etc. this is quite fishy needs improvement! (#331, #402)
- - popups/modal: make modal title bar blink when trying to click outside the modal
+ - modals: make modal title bar blink when trying to click outside the modal
- - popups: reopening context menu at new position should be the behavior by default? (equivalent to internal OpenPopupEx() with reopen_existing=true) (~#1497)
+ - modals: technically speaking, we could make Begin() with ImGuiWindowFlags_Modal work without involving popup. May help untangle a few things, as modals are more like regular windows than popups.
 - popups: if the popup functions took explicit ImGuiID it would allow the user to manage the scope of those ID. (#331)
 - popups: clicking outside (to close popup) and holding shouldn't drag window below.
 - popups: add variant using global identifier similar to Begin/End (#402)
 - popups: border options. richer api like BeginChild() perhaps? (#197)
- - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
+ - popups/modals: although it is sometimes convenient that popups/modals lifetime is owned by imgui, we could also a bool-owned-by-user api as long as Begin() return value testing is enforced.
 - tooltip: tooltip that doesn't fit in entire screen seems to lose their "last preferred direction" and may teleport when moving mouse.
 - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
 - tooltip: tooltips with delay timers? or general timer policy? (instantaneous vs timed): IsItemHovered() with timer + implicit aabb-id for items with no ID. (#1485)
- - menus: calling BeginMenu() twice with a same name doesn't append as Begin() does for regular windows (#1207)
+ - tooltip: drag and drop with tooltip near monitor edges lose/changes its last direction instead of locking one. The drag and drop tooltip should always follow without changing direction.
- - menus: menu bars inside modal windows are acting weird.
+ - tooltip: allow to set the width of a tooltip to allow TextWrapped() etc. while keeping the height automatic.
- - status-bar: add a per-window status bar helper similar to what menu-bar does.
+ - tooltip: drag tooltip hovering over source widget with IsItemHovered/SetTooltip flickers (WIP branch)
 - status-bar: add a per-window status bar helper similar to what menu-bar does. generalize concept of layer0 rect in window (can make _MenuBar window flag obsolete too).
 - shortcuts: local-style shortcut api, e.g. parse "&Save"
 - shortcuts,menus: global-style shortcut api e.g. "Save (CTRL+S)" -> explicit flag for recursing into closed menu
 - shortcuts: programmatically access shortcuts "Focus("&Save"))
 - menus: menu-bar: main menu-bar could affect clamping of windows position (~ akin to modifying DisplayMin)
 - menus: hovering from menu to menu on a menu-bar has 1 frame without any menu, which is a little annoying. ideally either 0 either longer.
 - menus: would be nice if the Selectable() supported horizontal alignment (must be given the equivalent of WorkRect.Max.x matching the position of the shortcut column)
 - text: selectable text (for copy) as a generic feature (ItemFlags?)
 - text: proper alignment options in imgui_internal.h
 - text wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
 - text: it's currently impossible to have a window title with "##". perhaps an official workaround would be nice. \ style inhibitor? non-visible ascii code to insert between #?
 - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
 - text: refactor TextUnformatted (or underlying function) to more explicitly request if we need width measurement or not
 - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
 - tree node / optimization: avoid formatting when clipped.
 - tree node: tree-node/header right-most side doesn't take account of horizontal scrolling.
 - tree node: add treenode/treepush int variants? not there because (void*) cast from int warns on some platforms/settings?
 - tree node: try to apply scrolling at time of TreePop() if node was just opened and end of node is past scrolling limits?
 - tree node / selectable render mismatch which is visible if you use them both next to each other (e.g. cf. property viewer)
 - tree node: tweak color scheme to distinguish headers from selected tree node (#581)
 - tree node: leaf/non-leaf highlight mismatch.
 - tree node/opt: could avoid formatting when clipped (flag assuming we don't care about width/height, assume single line height? format only %s/%c to be able to count height?)
 - settings: write more decent code to allow saving/loading new fields: columns, selected tree nodes?
 - settings: api for per-tool simple persistent data (bool,int,float,columns sizes,etc.) in .ini file (#437)
- - stb: add defines to disable stb implementations
+ - settings/persistence: helpers to make TreeNodeBehavior persist (even during dev!) - may need to store some semantic and/or data type in ImGuiStoragePair
 - style: better default styles. (#707)
 - style: PushStyleVar: allow direct access to individual float X/Y elements.
 - style: add a highlighted text color (for headers, etc.)
 - style: border types: out-screen, in-screen, etc. (#447)
 - style: add window shadow (fading away from the window. Paint-style calculation of vertices alpha after drawlist would be easier)
 - style: a concept of "compact style" that the end-user can easily rely on (e.g. PushStyleCompact()?) that maps to other settings? avoid implementing duplicate helpers such as SmallCheckbox(), etc.
 - style: try to make PushStyleVar() more robust to incorrect parameters (to be more friendly to edit & continues situation).
 - style: global scale setting.
 - style: FramePadding could be different for up vs down (#584)
 - style: WindowPadding needs to be EVEN as the 0.5 multiplier used on this value probably have a subtle effect on clip rectangle
 - style: have a more global HSV setter (e.g. alter hue on all elements). consider replacing active/hovered by offset in HSV space? (#438, #707, #1223)
 - style: gradients fill (#1223) ~ 2 bg colors for each fill? tricky with rounded shapes and using textures for corners.
 - style editor: color child window height expressed in multiple of line height.
 - log: improve logging of ArrowButton, ListBox, TabItem
 - log: carry on indent / tree depth when opening a child window
 - log: enabling log ends up pushing and growing vertices buffers because we don't distinguish layout vs render clipping
 - log: have more control over the log scope (e.g. stop logging when leaving current tree node scope)
 - log: be able to log anything (e.g. right-click on a window/tree-node, shows context menu? log into tty/file/clipboard)
 - log: let user copy any window content to clipboard easily (CTRL+C on windows? while moving it? context menu?). code is commented because it fails with multiple Begin/End pairs.
- - log: obsolete LogButtons() all together.
+ - log: obsolete LogButtons().... (was: LogButtons() options for specifying depth and/or hiding depth slider)
 - log: LogButtons() options for specifying depth and/or hiding depth slider
- - filters: set a current filter that tree node can automatically query to hide themselves
+ - filters: set a current filter that certains items (e.g. tree node) can automatically query to hide themselves
 - filters: handle wild-cards (with implicit leading/trailing *), reg-exprs
 - filters: fuzzy matches (may use code at blog.forrestthewoods.com/4cffeed33fdb)
 - drag and drop: focus drag target window on hold (even without open)
 - drag and drop: releasing a drop shows the "..." tooltip for one frame - since e13e598 (#1725)
- - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov.
+ - drag and drop: drag source on a group object (would need e.g. an invisible button covering group in EndGroup) https://twitter.com/paniq/status/1121446364909535233
 - drag and drop: have some way to know when a drag begin from BeginDragDropSource() pov. (see 2018/01/11 post in #143)
 - drag and drop: allow preview tooltip to be submitted from a different place than the drag source. (#1725)
 - drag and drop: allow using with other mouse buttons (where activeid won't be set). (#1637)
 - drag and drop: make it easier and provide a demo to have tooltip both are source and target site, with a more detailed one on target site (tooltip ordering problem)
- - drag and drop: test with reordering nodes (in a list, or a tree node). (#143)
+ - drag and drop: demo with reordering nodes (in a list, or a tree node). (#143)
 - drag and drop: test integrating with os drag and drop (make it easy to do a naive WM_DROPFILE integration)
- - drag and drop: make payload optional? (#143)
+ - drag and drop: allow for multiple payload types. (#143)
- - drag and drop: feedback when hovering a modal (cursor?)
+ - drag and drop: make payload optional? payload promise? (see 2018/01/11 post in #143)
- - node/graph editor (#306)
+ - drag and drop: (#143) "both an in-process pointer and a promise to generate a serialized version, for whether the drag ends inside or outside the same process"
- - pie menus patterns (#434)
+ - drag and drop: feedback when hovering a region blocked by modal (mouse cursor "NO"?)
 - markup: simple markup language for color change? (#902)
 - markup: simple markup language for color change? (#902, #3130)
 - text: selectable text (for copy) as a generic feature (ItemFlags?)
 - text: proper alignment options in imgui_internal.h
 - text: provided a framed text helper, e.g. https://pastebin.com/1Laxy8bT
 - text: refactor TextUnformatted (or underlying function) to more explicitly request if we need width measurement or not
 - text/layout/tabs: \t pulling position from base pos + step, or offset array (e.g. could be used in text edit, menus for simple icon+text alignment, etc.)
 - text link/url button: underlined. should api expose an ID or use text contents as ID? which colors enum to use?
 - text/wrapped: should be a more first-class citizen, e.g. wrapped text within a Selectable with known width.
 - text/wrapped: custom separator for text wrapping. (#3002)
 - text/wrapped: figure out better way to use TextWrapped() in an always auto-resize context (tooltip, etc.) (#249)
 - font: arbitrary line spacing. (#2945)
 - font: MergeMode: flags to select overwriting or not (this is now very easy with refactored ImFontAtlasBuildWithStbTruetype)
 - font: free the Alpha buffer if user only requested RGBA.
 !- font: better CalcTextSizeA() API, at least for simple use cases. current one is horrible (perhaps have simple vs extended versions).
 - font: for the purpose of RenderTextEllipsis(), it might be useful that CalcTextSizeA() can ignore the trailing padding?
 - font: a CalcTextHeight() helper could run faster than CalcTextSize().y
 - font: enforce monospace through ImFontConfig (for icons?) + create dual ImFont output from same input, reusing rasterized data but with different glyphs/AdvanceX
 - font: finish CustomRectRegister() to allow mapping Unicode codepoint to custom texture data
 - font: remove ID from CustomRect registration, it seems unnecessary!
 - font: make it easier to submit own bitmap font (same texture, another texture?). (#2127, #2575)
 - font: PushFontSize API (#1018)
 - font: MemoryTTF taking ownership confusing/not obvious, maybe default should be opposite?
 - font: storing MinAdvanceX per font would allow us to skip calculating line width (under a threshold of character count) in loops looking for block width
@ -288,98 +262,85 @@ It's mostly a bunch of personal notes, probably incomplete. Feel free to query i
 - font/atlas: add a missing Glyphs.reserve()
 - font/atlas: incremental updates
 - font/atlas: dynamic font atlas to avoid baking huge ranges into bitmap and make scaling easier.
 - font/atlas: allow user to submit its own primitive to be rectpacked, and allow to map them on a Unicode point.
 - font/draw: vertical and/or rotated text renderer (#705) - vertical is easier clipping wise
 - font/draw: need to be able to specify wrap start position.
- - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines)
+ - font/draw: better reserve policy for large horizontal block of text (shouldn't reserve for all clipped lines). also see #3349.
 - font/draw: fix for drawing 16k+ visible characters in same call.
 - font/draw: underline, squiggle line rendering helpers.
 - font: optimization: for monospace font (like the default one) we can trim IndexXAdvance as long as trailing value is == FallbackXAdvance (need to make sure TAB is still correct), would save on cache line.
 - font: add support for kerning, probably optional. A) perhaps default to (32..128)^2 matrix ~ 9K entries = 36KB, then hash for non-ascii?. B) or sparse lookup into per-char list?
 - font: add a simpler CalcTextSizeA() api? current one ok but not welcome if user needs to call it directly (without going through ImGui::CalcTextSize)
- - font: fix AddRemapChar() to work before font has been built.
+ - font: fix AddRemapChar() to work before atlas  has been built.
 - font: what would it take to support codepoint higher than 0xFFFF? (smileys, etc.)
 - font: (api breaking) remove "TTF" from symbol names. also because it now supports OTF.
 - font/opt: Considering storing standalone AdvanceX table as 16-bit fixed point integer?
- - font/opt: Glyph currently 40 bytes (2+9*4). Consider storing UV as 16 bits integer? (->32 bytes). X0/Y0/X1/Y1 as 16 fixed-point integers? Or X0/Y0 as float and X1/Y1 as fixed8_8?
+ - font/opt: Glyph currently 40 bytes (2+9*4). Consider storing UV as 16-bits integer? (->32 bytes). X0/Y0/X1/Y1 as 16 fixed-point integers? Or X0/Y0 as float and X1/Y1 as fixed8_8?
 - nav: visual feedback on button press.
 - nav: some features such as PageUp/Down/Home/End should probably work without ImGuiConfigFlags_NavEnableKeyboard? (where do we draw the line? how about CTRL+Tab)
 ! nav: never clear NavId on some setup (e.g. gamepad centric)
 - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
 - nav: Home/End behavior when navigable item is not fully visible at the edge of scrolling? should be backtrack to keep item into view?
 - nav: NavScrollToBringItemIntoView() with item bigger than view should focus top-right? Repro: using Nav in "About Window"
 - nav: wrap around logic to allow e.g. grid based layout (pressing NavRight on the right-most element would go to the next row, etc.). see internal's NavMoveRequestTryWrapping().
- - nav: patterns to make it possible for arrows key to update selection
+ - nav: patterns to make it possible for arrows key to update selection (see JustMovedTo in range_select branch)
- - nav: restore/find nearest navid when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
+ - nav: restore/find nearest NavId when current one disappear (e.g. pressed a button that disappear, or perhaps auto restoring when current button change name)
 - nav: SetItemDefaultFocus() level of priority, so widget like Selectable when inside a popup could claim a low-priority default focus on the first selected iem
- - nav: allow input system to be be more tolerant of io.DeltaTime=0.0f
+ - nav: NavFlattened: init requests don't work properly on flattened siblings.
- - nav: ESC within a menu of a child window seems to exit the child window.
+ - nav: NavFlattened: pageup/pagedown/home/end don't work properly on flattened siblings.
 - nav: NavFlattened: ESC on a flattened child should select something.
 - nav: NavFlattened: broken: in typical usage scenario, the items of a fully clipped child are currently not considered to enter into a NavFlattened child.
 - nav: NavFlattened: init request doesn't select items that are part of a NavFlattened child
 - nav: NavFlattened: cannot access menu-bar of a flattened child window with Alt/menu key (not a very common use case..).
- - nav: Left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
+ - nav: simulate right-click or context activation? (SHIFT+F10, keyboard Menu key?)
 - nav/popup: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys, default validation button, etc.
 - nav/treenode: left within a tree node block as a fallback (ImGuiTreeNodeFlags_NavLeftJumpsBackHere by default?)
 - nav/menus: pressing left-right on a vertically clipped menu bar tends to jump to the collapse/close buttons.
 - nav/menus: allow pressing Menu to leave a sub-menu.
- - nav/menus: a way to access the main menu bar with Alt? (currently needs CTRL+TAB)
+ - nav/menus: a way to access the main menu bar with Alt? (currently needs CTRL+TAB) or last focused window menu bar?
 - nav/menus: when using the main menu bar, even though we restore focus after, the underlying window loses its title bar highlight during menu manipulation. could we prevent it?
- - nav: simulate right-click or context activation? (SHIFT+F10)
+ - nav/menus: main menu bar currently cannot restore a nullptr focus. Could save NavWindow at the time of being focused, similarly to what popup do?
- - nav: tabs should go through most/all widgets (in submission order?).
+ - nav/menus: Alt,Up could open the first menu (e.g. "File") currently it tends to nav into the window/collapse menu. Do do that we would need custom transition?
- - nav: when CTRL-Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
+ - nav/windowing: when CTRL+Tab/windowing is active, the HoveredWindow detection doesn't take account of the window display re-ordering.
- - nav: esc/enter default behavior for popups, e.g. be able to mark an "ok" or "cancel" button that would get triggered by those keys.
+ - nav/windowing: Resizing window will currently fail with certain types of resizing constraints/callback applied
 - nav: when activating a button that changes label (without a static ID) or disappear, can we somehow automatically recover into a nearest highlight item?
 - nav: there's currently no way to completely clear focus with the keyboard. depending on patterns used by the application to dispatch inputs, it may be desirable.
 - nav: configuration flag to disable global shortcuts (currently only CTRL-tab) ?
 - focus: preserve ActiveId/focus stack state, e.g. when opening a menu and close it, previously selected InputText() focus gets restored (#622)
 - focus: SetKeyboardFocusHere() on with >= 0 offset could be done on same frame (else latch and modulate on beginning of next frame)
 - focus: unable to use SetKeyboardFocusHere() on clipped widgets. (#787)
 - examples: move ImGui::NewFrame() out of the backend _NewFrame() ?
 - viewport: make it possible to have no main/hosting viewport
 - viewport: We set ImGuiViewportFlags_NoFocusOnAppearing in a way that is required for GLFW/SDL binding, but could be handled better without
   on a custom e.g. Win32 bindings. It prevents newly dragged-out viewports from taking the focus, which makes ALT+F4 more ambiguous.
 - viewport: not focusing newly undocked viewport means clicking back on previous one doesn't bring OS window to front.
 - viewport: with platform decoration enabled, platform may force constraint (e.g. minimum size)
 - viewport: use getfocus/setfocus api to synchronize imgui<>platform focus better (e.g imgui-side ctrl-tab can focus os window, OS initial setup and alt-tab can focus imgui window etc.)
 - viewport: store per-viewport/monitor DPI in .ini file so an application reload or main window changing DPI on reload can be properly patched for.
 - viewport: implicit/fallback Debug window can hog a zombie viewport (harmless, noisy?) > could at least clear out the reference on a per session basis?
 - viewport: need to clarify how to use GetMousePos() from a user point of view.
 - platform: glfw: no support for ImGuiBackendFlags_HasMouseHoveredViewport.
 - platform: sdl: no support for ImGuiBackendFlags_HasMouseHoveredViewport. maybe we could use SDL_GetMouseFocus() / SDL_WINDOW_MOUSE_FOCUS if imgui could fallback on its heuristic when NoInputs is set
 - platform: sdl: no refresh of monitor/display (SDL doesn't seem to have an event for it).
 - platform: sdl: multi-viewport + minimized window seems to break mouse wheel events (at least under Win32).
 - inputs: we need an explicit flag about whether the imgui window is focused, to be able to distinguish focused key releases vs alt-tabbing all release behaviors.
 - inputs: rework IO system to be able to pass actual ordered/timestamped events. use an event queue? (~#335, #71)
 - inputs: support track pad style scrolling & slider edit.
 - inputs/io: backspace and arrows in the context of a text input could use system repeat rate.
 - inputs/io: clarify/standardize/expose repeat rate and repeat delays (#1808)
 - inputs/scrolling: support for smooth scrolling (#2462, #2569)
- - misc: idle: expose "woken up" boolean (set by inputs) and/or animation time (for cursor blink) for back-end to be able stop refreshing easily.
+ - misc: idle: expose "woken up" boolean (set by inputs) and/or animation time (for cursor blink) for backend to be able stop refreshing easily.
 - misc: idle: if cursor blink if the _only_ visible animation, core imgui could rewrite vertex alpha to avoid CPU pass on ImGui:: calls.
 - misc: idle: if cursor blink if the _only_ visible animation, could even expose a dirty rectangle that optionally can be leverage by some app to render in a smaller viewport, getting rid of much pixel shading cost.
 - misc: no way to run a root-most GetID() with ImGui:: api since there's always a Debug window in the stack. (mentioned in #2960)
 - misc: make the ImGuiCond values linear (non-power-of-two). internal storage for ImGuiWindow can use integers to combine into flags (Why?)
 - misc: provide a way to compile out the entire implementation while providing a dummy API (e.g. #define IMGUI_DUMMY_IMPL)
 - misc: PushItemFlag(): add a flag to disable keyboard capture when used with mouse? (#1682)
 - misc: use more size_t in public api?
- - misc: possible compile-time support for string view/range instead of char* would e.g. facilitate usage with Rust (#683)
+ - misc: possible compile-time support for string view/range instead of char* would e.g. facilitate usage with Rust (#683, #3038, WIP string_view branch)
 - misc: possible compile-time support for wchar_t instead of char*?
- - backend: bgfx? https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
+ - demo: demonstrate using PushStyleVar() in more details.
 - emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
 - remote: make a system like RemoteImGui first-class citizen/project (#75)
 - demo: find a way to demonstrate textures in the examples application, as it such a common issue for new users.
 - demo: add vertical separator demo
 - demo: add virtual scrolling example?
 - demo: demonstrate Plot offset
 - demo: window size constraint: square demo is broken when resizing from edges (#1975), would need to rework the callback system to solve this
 - examples: window minimize, maximize (#583)
 - examples: provide a zero frame-rate/idle example.
- - examples: apple: example_apple should be using modern GL3.
+ - examples: dx11/dx12: try to use new swapchain blit models (#2970)
- - examples: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
+ - backends: report it better when not able to create texture?
- - examples: opengl: rename imgui_impl_opengl2 to impl_opengl_legacy and imgui_impl_opengl3 to imgui_impl_opengl? (#1900)
+ - backends: glfw: could go idle when minimized? if (glfwGetWindowAttrib(window, GLFW_ICONIFIED)) { glfwWaitEvents(); continue; } // issue: DeltaTime will be super high on resume, perhaps provide a way to let impl know (#440)
- - examples: opengl: could use a single vertex buffer and glBufferSubData for uploads?
+ - backends: opengl: rename imgui_impl_opengl2 to impl_opengl_legacy and imgui_impl_opengl3 to imgui_impl_opengl? (#1900)
- - examples: opengl: explicitly disable GL_STENCIL_TEST in bindings.
+ - backends: opengl: could use a single vertex buffer and glBufferSubData for uploads?
- - examples: vulkan: viewport: support for synchronized swapping of multiple swap chains.
+ - backends: opengl: explicitly disable GL_STENCIL_TEST in bindings.
- - optimization: replace vsnprintf with stb_printf? or enable the defines/infrastructure to allow it (#1038)
+ - backends: vulkan: viewport: support for synchronized swapping of multiple swap chains.
 - backends: bgfx: https://gist.github.com/RichardGale/6e2b74bc42b3005e08397236e4be0fd0
 - backends: emscriptem: with refactored examples, we could provide a direct imgui_impl_emscripten platform layer (see eg. https://github.com/floooh/sokol-samples/blob/master/html5/imgui-emsc.cc#L42)
 - bindings: ways to use clang ast dump to generate bindings or helpers for bindings? (e.g. clang++ -Xclang -ast-dump=json imgui.h) (WIP project "dear-bindings" still private)
 - optimization: replace vsnprintf with stb_printf? using IMGUI_USE_STB_SPRINTF. (#1038 + needed for string_view)
 - optimization: add clipping for multi-component widgets (SliderFloatX, ColorEditX, etc.). one problem is that nav branch can't easily clip parent group when there is a move request.
 - optimization: add a flag to disable most of rendering, for the case where the user expect to skip it (#335)
 - optimization: fully covered window (covered by another with non-translucent bg + WindowRounding worth of padding) may want to clip rendering.
 - optimization: use another hash function than crc32, e.g. FNV1a
 - optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
 - optimization: turn some the various stack vectors into statically-sized arrays
--- a/dep/imgui/imgui.natvis
+++ b/dep/imgui/imgui.natvis
@ -0,0 +1,58 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
 .natvis file for Visual Studio debugger.
 Purpose: provide nicer views on data types used by Dear ImGui.
 To enable:
 * include file in your VS project (most recommended: not intrusive and always kept up to date!)
 * or copy in %USERPROFILE%\Documents\Visual Studio XXXX\Visualizers (current user)
 * or copy in %VsInstallDirectory%\Common7\Packages\Debugger\Visualizers (all users)
 More information at: https://docs.microsoft.com/en-us/visualstudio/debugger/create-custom-views-of-native-objects?view=vs-2019
 -->
 <AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
 <Type Name="ImVector&lt;*&gt;">
  <DisplayString>{{Size={Size} Capacity={Capacity}}}</DisplayString>
  <Expand>
    <ArrayItems>
      <Size>Size</Size>
      <ValuePointer>Data</ValuePointer>
    </ArrayItems>
  </Expand>
 </Type>
 <Type Name="ImSpan&lt;*&gt;">
  <DisplayString>{{Size={DataEnd-Data} }}</DisplayString>
  <Expand>
    <ArrayItems>
      <Size>DataEnd-Data</Size>
      <ValuePointer>Data</ValuePointer>
    </ArrayItems>
  </Expand>
 </Type>
 <Type Name="ImVec2">
  <DisplayString>{{x={x,g} y={y,g}}}</DisplayString>
 </Type>
 <Type Name="ImVec4">
  <DisplayString>{{x={x,g} y={y,g} z={z,g} w={w,g}}}</DisplayString>
 </Type>
 <Type Name="ImRect">
  <DisplayString>{{Min=({Min.x,g} {Min.y,g}) Max=({Max.x,g} {Max.y,g}) Size=({Max.x-Min.x,g} {Max.y-Min.y,g})}}</DisplayString>
  <Expand>
    <Item Name="Min">Min</Item>
    <Item Name="Max">Max</Item>
    <Item Name="[Width]">Max.x - Min.x</Item>
    <Item Name="[Height]">Max.y - Min.y</Item>
  </Expand>
 </Type>
 <Type Name="ImGuiWindow">
  <DisplayString>{{Name {Name,s} Active {(Active||WasActive)?1:0,d} Child {(Flags &amp; 0x01000000)?1:0,d} Popup {(Flags &amp; 0x04000000)?1:0,d} Hidden {(Hidden)?1:0,d}}</DisplayString>
 </Type>
 </AutoVisualizer>
--- a/dep/imgui/imgui.vcxproj
+++ b/dep/imgui/imgui.vcxproj
@ -1,7 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <Import Project="..\msvc\vsprops\Configurations.props" />
  <ItemGroup>
    <ClInclude Include="include\imconfig.h" />
    <ClInclude Include="include\imgui.h" />
@ -18,19 +17,18 @@
    <ClCompile Include="src\imgui_tables.cpp" />
    <ClCompile Include="src\imgui_widgets.cpp" />
  </ItemGroup>
-
+  <ItemGroup>
    <Natvis Include="imgui.natvis" />
  </ItemGroup>
  <PropertyGroup Label="Globals">
    <ProjectGuid>{BB08260F-6FBC-46AF-8924-090EE71360C6}</ProjectGuid>
  </PropertyGroup>
  <Import Project="..\msvc\vsprops\StaticLibrary.props" />
  <ItemDefinitionGroup>
    <ClCompile>
      <WarningLevel>TurnOffAllWarnings</WarningLevel>
      <AdditionalIncludeDirectories>$(ProjectDir)include;$(ProjectDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
    </ClCompile>
  </ItemDefinitionGroup>
  <Import Project="..\msvc\vsprops\Targets.props" />
 </Project>
--- a/dep/imgui/imgui.vcxproj.filters
+++ b/dep/imgui/imgui.vcxproj.filters
@ -16,4 +16,7 @@
    <ClCompile Include="src\imgui_stdlib.cpp" />
    <ClCompile Include="src\imgui_tables.cpp" />
  </ItemGroup>
  <ItemGroup>
    <Natvis Include="imgui.natvis" />
  </ItemGroup>
 </Project>
--- a/dep/imgui/include/imconfig.h
+++ b/dep/imgui/include/imconfig.h
@ -33,8 +33,8 @@
 //---- Disable all of Dear ImGui or don't implement standard windows/tools.
 // It is very strongly recommended to NOT disable the demo windows and debug tool during development. They are extremely useful in day to day work. Please read comments in imgui_demo.cpp.
 //#define IMGUI_DISABLE                                     // Disable everything: all headers and source files will be empty.
-//#define IMGUI_DISABLE_DEMO_WINDOWS                        // Disable demo windows: ShowDemoWindow()/ShowStyleEditor() will be empty.
+#define IMGUI_DISABLE_DEMO_WINDOWS                        // Disable demo windows: ShowDemoWindow()/ShowStyleEditor() will be empty.
-//#define IMGUI_DISABLE_DEBUG_TOOLS                         // Disable metrics/debugger and other debug tools: ShowMetricsWindow(), ShowDebugLogWindow() and ShowIDStackToolWindow() will be empty.
+#define IMGUI_DISABLE_DEBUG_TOOLS                         // Disable metrics/debugger and other debug tools: ShowMetricsWindow(), ShowDebugLogWindow() and ShowIDStackToolWindow() will be empty.
 //---- Don't implement some functions to reduce linkage requirements.
 //#define IMGUI_DISABLE_WIN32_DEFAULT_CLIPBOARD_FUNCTIONS   // [Win32] Don't implement default clipboard handler. Won't use and link with OpenClipboard/GetClipboardData/CloseClipboard etc. (user32.lib/.a, kernel32.lib/.a)
--- a/dep/imgui/include/imgui.h
+++ b/dep/imgui/include/imgui.h
@ -1,4 +1,4 @@
-// dear imgui, v1.90.1
+// dear imgui, v1.90.4
 // (headers)
 // Help:
@ -23,8 +23,8 @@
 // Library Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals, e.g. '#if IMGUI_VERSION_NUM >= 12345')
-#define IMGUI_VERSION       "1.90.1"
+#define IMGUI_VERSION       "1.90.4"
-#define IMGUI_VERSION_NUM   19010
+#define IMGUI_VERSION_NUM   19040
 #define IMGUI_HAS_TABLE
 /*
@ -89,6 +89,8 @@ Index of this file:
 #define IMGUI_CHECKVERSION()        ImGui::DebugCheckVersionAndDataLayout(IMGUI_VERSION, sizeof(ImGuiIO), sizeof(ImGuiStyle), sizeof(ImVec2), sizeof(ImVec4), sizeof(ImDrawVert), sizeof(ImDrawIdx))
 // Helper Macros - IM_FMTARGS, IM_FMTLIST: Apply printf-style warnings to our formatting functions.
 // (MSVC provides an equivalent mechanism via SAL Annotations but it would require the macros in a different
 //  location. e.g. #include <sal.h> + void myprintf(_Printf_format_string_ const char* format, ...))
 #if !defined(IMGUI_USE_STB_SPRINTF) && defined(__MINGW32__) && !defined(__clang__)
 #define IM_FMTARGS(FMT)             __attribute__((format(gnu_printf, FMT, FMT+1)))
 #define IM_FMTLIST(FMT)             __attribute__((format(gnu_printf, FMT, 0)))
@ -342,7 +344,7 @@ namespace ImGui
    // - Use child windows to begin into a self-contained independent scrolling/clipping regions within a host window. Child windows can embed their own child.
    // - Before 1.90 (November 2023), the "ImGuiChildFlags child_flags = 0" parameter was "bool border = false".
    //   This API is backward compatible with old code, as we guarantee that ImGuiChildFlags_Border == true.
-    //   Consider updating your old call sites:
+    //   Consider updating your old code:
    //      BeginChild("Name", size, false)   -> Begin("Name", size, 0); or Begin("Name", size, ImGuiChildFlags_None);
    //      BeginChild("Name", size, true)    -> Begin("Name", size, ImGuiChildFlags_Border);
    // - Manual sizing (each axis can use a different setting e.g. ImVec2(0.0f, 400.0f)):
@ -443,7 +445,7 @@ namespace ImGui
    IMGUI_API ImVec2        GetFontTexUvWhitePixel();                                       // get UV coordinate for a while pixel, useful to draw custom shapes via the ImDrawList API
    IMGUI_API ImU32         GetColorU32(ImGuiCol idx, float alpha_mul = 1.0f);              // retrieve given style color with style alpha applied and optional extra alpha multiplier, packed as a 32-bit value suitable for ImDrawList
    IMGUI_API ImU32         GetColorU32(const ImVec4& col);                                 // retrieve given color with style alpha applied, packed as a 32-bit value suitable for ImDrawList
-    IMGUI_API ImU32         GetColorU32(ImU32 col);                                         // retrieve given color with style alpha applied, packed as a 32-bit value suitable for ImDrawList
+    IMGUI_API ImU32         GetColorU32(ImU32 col, float alpha_mul = 1.0f);                 // retrieve given color with style alpha applied, packed as a 32-bit value suitable for ImDrawList
    IMGUI_API const ImVec4& GetStyleColorVec4(ImGuiCol idx);                                // retrieve style color as stored in ImGuiStyle structure. use to feed back into PushStyleColor(), otherwise use GetColorU32() to get style color with style alpha baked in.
    // Layout cursor positioning
@ -965,6 +967,7 @@ namespace ImGui
    // - Your main debugging friend is the ShowMetricsWindow() function, which is also accessible from Demo->Tools->Metrics Debugger
    IMGUI_API void          DebugTextEncoding(const char* text);
    IMGUI_API void          DebugFlashStyleColor(ImGuiCol idx);
    IMGUI_API void          DebugStartItemPicker();
    IMGUI_API bool          DebugCheckVersionAndDataLayout(const char* version_str, size_t sz_io, size_t sz_style, size_t sz_vec2, size_t sz_vec4, size_t sz_drawvert, size_t sz_drawidx); // This is called by IMGUI_CHECKVERSION() macro.
    // Memory Allocators
@ -1025,7 +1028,7 @@ enum ImGuiWindowFlags_
 };
 // Flags for ImGui::BeginChild()
-// (Legacy: bot 0 must always correspond to ImGuiChildFlags_Border to be backward compatible with old API using 'bool border = false'.
+// (Legacy: bit 0 must always correspond to ImGuiChildFlags_Border to be backward compatible with old API using 'bool border = false'.
 // About using AutoResizeX/AutoResizeY flags:
 // - May be combined with SetNextWindowSizeConstraints() to set a min/max size for each axis (see "Demo->Child->Auto-resize with Constraints").
 // - Size measurement for a given axis is only performed when the child window is within visible boundaries, or is just appearing.
@ -1036,7 +1039,7 @@ enum ImGuiWindowFlags_
 enum ImGuiChildFlags_
 {
    ImGuiChildFlags_None                    = 0,
-    ImGuiChildFlags_Border                  = 1 << 0,   // Show an outer border and enable WindowPadding. (Important: this is always == 1 == true for legacy reason)
+    ImGuiChildFlags_Border                  = 1 << 0,   // Show an outer border and enable WindowPadding. (IMPORTANT: this is always == 1 == true for legacy reason)
    ImGuiChildFlags_AlwaysUseWindowPadding  = 1 << 1,   // Pad with style.WindowPadding even if no border are drawn (no padding by default for non-bordered child windows because it makes more sense)
    ImGuiChildFlags_ResizeX                 = 1 << 2,   // Allow resize from right border (layout direction). Enable .ini saving (unless ImGuiWindowFlags_NoSavedSettings passed to window flags)
    ImGuiChildFlags_ResizeY                 = 1 << 3,   // Allow resize from bottom border (layout direction). "
@ -1105,8 +1108,8 @@ enum ImGuiTreeNodeFlags_
 };
 // Flags for OpenPopup*(), BeginPopupContext*(), IsPopupOpen() functions.
-// - To be backward compatible with older API which took an 'int mouse_button = 1' argument, we need to treat
+// - To be backward compatible with older API which took an 'int mouse_button = 1' argument instead of 'ImGuiPopupFlags flags',
-//   small flags values as a mouse button index, so we encode the mouse button in the first few bits of the flags.
+//   we need to treat small flags values as a mouse button index, so we encode the mouse button in the first few bits of the flags.
 //   It is therefore guaranteed to be legal to pass a mouse button index in ImGuiPopupFlags.
 // - For the same reason, we exceptionally default the ImGuiPopupFlags argument of BeginPopupContextXXX functions to 1 instead of 0.
 //   IMPORTANT: because the default parameter is 1 (==ImGuiPopupFlags_MouseButtonRight), if you rely on the default parameter
@ -1120,10 +1123,12 @@ enum ImGuiPopupFlags_
    ImGuiPopupFlags_MouseButtonMiddle       = 2,        // For BeginPopupContext*(): open on Middle Mouse release. Guaranteed to always be == 2 (same as ImGuiMouseButton_Middle)
    ImGuiPopupFlags_MouseButtonMask_        = 0x1F,
    ImGuiPopupFlags_MouseButtonDefault_     = 1,
-    ImGuiPopupFlags_NoOpenOverExistingPopup = 1 << 5,   // For OpenPopup*(), BeginPopupContext*(): don't open if there's already a popup at the same level of the popup stack
+    ImGuiPopupFlags_NoReopen                = 1 << 5,   // For OpenPopup*(), BeginPopupContext*(): don't reopen same popup if already open (won't reposition, won't reinitialize navigation)
-    ImGuiPopupFlags_NoOpenOverItems         = 1 << 6,   // For BeginPopupContextWindow(): don't return true when hovering items, only when hovering empty space
+    //ImGuiPopupFlags_NoReopenAlwaysNavInit = 1 << 6,   // For OpenPopup*(), BeginPopupContext*(): focus and initialize navigation even when not reopening.
-    ImGuiPopupFlags_AnyPopupId              = 1 << 7,   // For IsPopupOpen(): ignore the ImGuiID parameter and test for any popup.
+    ImGuiPopupFlags_NoOpenOverExistingPopup = 1 << 7,   // For OpenPopup*(), BeginPopupContext*(): don't open if there's already a popup at the same level of the popup stack
-    ImGuiPopupFlags_AnyPopupLevel           = 1 << 8,   // For IsPopupOpen(): search/test at any level of the popup stack (default test in the current level)
+    ImGuiPopupFlags_NoOpenOverItems         = 1 << 8,   // For BeginPopupContextWindow(): don't return true when hovering items, only when hovering empty space
    ImGuiPopupFlags_AnyPopupId              = 1 << 10,  // For IsPopupOpen(): ignore the ImGuiID parameter and test for any popup.
    ImGuiPopupFlags_AnyPopupLevel           = 1 << 11,  // For IsPopupOpen(): search/test at any level of the popup stack (default test in the current level)
    ImGuiPopupFlags_AnyPopup                = ImGuiPopupFlags_AnyPopupId | ImGuiPopupFlags_AnyPopupLevel,
 };
@ -2187,11 +2192,7 @@ struct ImGuiIO
    int         KeyMap[ImGuiKey_COUNT];             // [LEGACY] Input: map of indices into the KeysDown[512] entries array which represent your "native" keyboard state. The first 512 are now unused and should be kept zero. Legacy backend will write into KeyMap[] using ImGuiKey_ indices which are always >512.
    bool        KeysDown[ImGuiKey_COUNT];           // [LEGACY] Input: Keyboard keys that are pressed (ideally left in the "native" order your engine has access to keyboard keys, so you can use your own defines/enums for keys). This used to be [512] sized. It is now ImGuiKey_COUNT to allow legacy io.KeysDown[GetKeyIndex(...)] to work without an overflow.
    float       NavInputs[ImGuiNavInput_COUNT];     // [LEGACY] Since 1.88, NavInputs[] was removed. Backends from 1.60 to 1.86 won't build. Feed gamepad inputs via io.AddKeyEvent() and ImGuiKey_GamepadXXX enums.
-#endif
+    //void*     ImeWindowHandle;                    // [Obsoleted in 1.87] Set ImGuiViewport::PlatformHandleRaw instead. Set this to your HWND to get automatic IME cursor positioning.
 #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
    void*       ImeWindowHandle;                    // = NULL   // [Obsoleted in 1.87] Set ImGuiViewport::PlatformHandleRaw instead. Set this to your HWND to get automatic IME cursor positioning.
 #else
    void*       _UnusedPadding;
 #endif
    //------------------------------------------------------------------
@ -2765,7 +2766,8 @@ struct ImDrawList
    IMGUI_API void  AddImageRounded(ImTextureID user_texture_id, const ImVec2& p_min, const ImVec2& p_max, const ImVec2& uv_min, const ImVec2& uv_max, ImU32 col, float rounding, ImDrawFlags flags = 0);
    // Stateful path API, add points then finish with PathFillConvex() or PathStroke()
-    // - Filled shapes must always use clockwise winding order. The anti-aliasing fringe depends on it. Counter-clockwise shapes will have "inward" anti-aliasing.
+    // - Important: filled shapes must always use clockwise winding order! The anti-aliasing fringe depends on it. Counter-clockwise shapes will have "inward" anti-aliasing.
    //   so e.g. 'PathArcTo(center, radius, PI * -0.5f, PI)' is ok, whereas 'PathArcTo(center, radius, PI, PI * -0.5f)' won't have correct anti-aliasing when followed by PathFillConvex().
    inline    void  PathClear()                                                 { _Path.Size = 0; }
    inline    void  PathLineTo(const ImVec2& pos)                               { _Path.push_back(pos); }
    inline    void  PathLineToMergeDuplicate(const ImVec2& pos)                 { if (_Path.Size == 0 || memcmp(&_Path.Data[_Path.Size - 1], &pos, 8) != 0) _Path.push_back(pos); }
@ -3123,6 +3125,7 @@ enum ImGuiViewportFlags_
 //   - Windows are generally trying to stay within the Work Area of their host viewport.
 struct ImGuiViewport
 {
    ImGuiID             ID;                     // Unique identifier for the viewport
    ImGuiViewportFlags  Flags;                  // See ImGuiViewportFlags_
    ImVec2              Pos;                    // Main Area: Position of the viewport (Dear ImGui coordinates are the same as OS desktop/native coordinates)
    ImVec2              Size;                   // Main Area: Size of the viewport.
--- a/dep/imgui/include/imgui_freetype.h
+++ b/dep/imgui/include/imgui_freetype.h
@ -0,0 +1,51 @@
 // dear imgui: FreeType font builder (used as a replacement for the stb_truetype builder)
 // (headers)
 #pragma once
 #include "imgui.h"      // IMGUI_API
 #ifndef IMGUI_DISABLE
 // Forward declarations
 struct ImFontAtlas;
 struct ImFontBuilderIO;
 // Hinting greatly impacts visuals (and glyph sizes).
 // - By default, hinting is enabled and the font's native hinter is preferred over the auto-hinter.
 // - When disabled, FreeType generates blurrier glyphs, more or less matches the stb_truetype.h
 // - The Default hinting mode usually looks good, but may distort glyphs in an unusual way.
 // - The Light hinting mode generates fuzzier glyphs but better matches Microsoft's rasterizer.
 // You can set those flags globaly in ImFontAtlas::FontBuilderFlags
 // You can set those flags on a per font basis in ImFontConfig::FontBuilderFlags
 enum ImGuiFreeTypeBuilderFlags
 {
    ImGuiFreeTypeBuilderFlags_NoHinting     = 1 << 0,   // Disable hinting. This generally generates 'blurrier' bitmap glyphs when the glyph are rendered in any of the anti-aliased modes.
    ImGuiFreeTypeBuilderFlags_NoAutoHint    = 1 << 1,   // Disable auto-hinter.
    ImGuiFreeTypeBuilderFlags_ForceAutoHint = 1 << 2,   // Indicates that the auto-hinter is preferred over the font's native hinter.
    ImGuiFreeTypeBuilderFlags_LightHinting  = 1 << 3,   // A lighter hinting algorithm for gray-level modes. Many generated glyphs are fuzzier but better resemble their original shape. This is achieved by snapping glyphs to the pixel grid only vertically (Y-axis), as is done by Microsoft's ClearType and Adobe's proprietary font renderer. This preserves inter-glyph spacing in horizontal text.
    ImGuiFreeTypeBuilderFlags_MonoHinting   = 1 << 4,   // Strong hinting algorithm that should only be used for monochrome output.
    ImGuiFreeTypeBuilderFlags_Bold          = 1 << 5,   // Styling: Should we artificially embolden the font?
    ImGuiFreeTypeBuilderFlags_Oblique       = 1 << 6,   // Styling: Should we slant the font, emulating italic style?
    ImGuiFreeTypeBuilderFlags_Monochrome    = 1 << 7,   // Disable anti-aliasing. Combine this with MonoHinting for best results!
    ImGuiFreeTypeBuilderFlags_LoadColor     = 1 << 8,   // Enable FreeType color-layered glyphs
    ImGuiFreeTypeBuilderFlags_Bitmap        = 1 << 9    // Enable FreeType bitmap glyphs
 };
 namespace ImGuiFreeType
 {
    // This is automatically assigned when using '#define IMGUI_ENABLE_FREETYPE'.
    // If you need to dynamically select between multiple builders:
    // - you can manually assign this builder with 'atlas->FontBuilderIO = ImGuiFreeType::GetBuilderForFreeType()'
    // - prefer deep-copying this into your own ImFontBuilderIO instance if you use hot-reloading that messes up static data.
    IMGUI_API const ImFontBuilderIO*    GetBuilderForFreeType();
    // Override allocators. By default ImGuiFreeType will use IM_ALLOC()/IM_FREE()
    // However, as FreeType does lots of allocations we provide a way for the user to redirect it to a separate memory heap if desired.
    IMGUI_API void                      SetAllocatorFunctions(void* (*alloc_func)(size_t sz, void* user_data), void (*free_func)(void* ptr, void* user_data), void* user_data = nullptr);
    // Obsolete names (will be removed soon)
 #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
    //static inline bool BuildFontAtlas(ImFontAtlas* atlas, unsigned int flags = 0) { atlas->FontBuilderIO = GetBuilderForFreeType(); atlas->FontBuilderFlags = flags; return atlas->Build(); } // Prefer using '#define IMGUI_ENABLE_FREETYPE'
 #endif
 }
 #endif // #ifndef IMGUI_DISABLE
--- a/dep/imgui/include/imgui_internal.h
+++ b/dep/imgui/include/imgui_internal.h
@ -1,4 +1,4 @@
-// dear imgui, v1.90.1
+// dear imgui, v1.90.4
 // (internal structures/api)
 // You may use this file to debug, understand or extend Dear ImGui features but we don't provide any guarantee of forward compatibility.
@ -15,6 +15,8 @@ Index of this file:
 // [SECTION] Generic helpers
 // [SECTION] ImDrawList support
 // [SECTION] Widgets support: flags, enums, data structures
 // [SECTION] Data types support
 // [SECTION] Popup support
 // [SECTION] Inputs support
 // [SECTION] Clipper support
 // [SECTION] Navigation support
@ -234,6 +236,7 @@ namespace ImStb
 #define IMGUI_DEBUG_LOG_SELECTION(...)  do { if (g.DebugLogFlags & ImGuiDebugLogFlags_EventSelection)   IMGUI_DEBUG_LOG(__VA_ARGS__); } while (0)
 #define IMGUI_DEBUG_LOG_CLIPPER(...)    do { if (g.DebugLogFlags & ImGuiDebugLogFlags_EventClipper)     IMGUI_DEBUG_LOG(__VA_ARGS__); } while (0)
 #define IMGUI_DEBUG_LOG_IO(...)         do { if (g.DebugLogFlags & ImGuiDebugLogFlags_EventIO)          IMGUI_DEBUG_LOG(__VA_ARGS__); } while (0)
 #define IMGUI_DEBUG_LOG_INPUTROUTING(...) do{if (g.DebugLogFlags & ImGuiDebugLogFlags_EventInputRouting)IMGUI_DEBUG_LOG(__VA_ARGS__); } while (0)
 // Static Asserts
 #define IM_STATIC_ASSERT(_COND)         static_assert(_COND, "")
@ -297,11 +300,11 @@ namespace ImStb
 #elif defined(__clang__)
 #define IM_DEBUG_BREAK()    __builtin_debugtrap()
 #elif defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
-#define IM_DEBUG_BREAK()    __asm__ volatile("int $0x03")
+#define IM_DEBUG_BREAK()    __asm__ volatile("int3;nop")
 #elif defined(__GNUC__) && defined(__thumb__)
 #define IM_DEBUG_BREAK()    __asm__ volatile(".inst 0xde01")
 #elif defined(__GNUC__) && defined(__arm__) && !defined(__thumb__)
-#define IM_DEBUG_BREAK()    __asm__ volatile(".inst 0xe7f001f0");
+#define IM_DEBUG_BREAK()    __asm__ volatile(".inst 0xe7f001f0")
 #else
 #define IM_DEBUG_BREAK()    IM_ASSERT(0)    // It is expected that you define IM_DEBUG_BREAK() into something that will break nicely in a debugger!
 #endif
@ -689,9 +692,6 @@ struct ImPool
    int         GetBufSize() const                  { return Buf.Size; }
    int         GetMapSize() const                  { return Map.Data.Size; }   // It is the map we need iterate to find valid items, since we don't have "alive" storage anywhere
    T*          TryGetMapData(ImPoolIdx n)          { int idx = Map.Data[n].val_i; if (idx == -1) return NULL; return GetByIndex(idx); }
 #ifndef IMGUI_DISABLE_OBSOLETE_FUNCTIONS
    int         GetSize()                           { return GetMapSize(); } // For ImPlot: should use GetMapSize() from (IMGUI_VERSION_NUM >= 18304)
 #endif
 };
 // Helper: ImChunkStream<>
@ -985,43 +985,6 @@ enum ImGuiPlotType
    ImGuiPlotType_Histogram,
 };
 enum ImGuiPopupPositionPolicy
 {
    ImGuiPopupPositionPolicy_Default,
    ImGuiPopupPositionPolicy_ComboBox,
    ImGuiPopupPositionPolicy_Tooltip,
 };
 struct ImGuiDataVarInfo
 {
    ImGuiDataType   Type;
    ImU32           Count;      // 1+
    ImU32           Offset;     // Offset in parent structure
    void* GetVarPtr(void* parent) const { return (void*)((unsigned char*)parent + Offset); }
 };
 struct ImGuiDataTypeTempStorage
 {
    ImU8        Data[8];        // Can fit any data up to ImGuiDataType_COUNT
 };
 // Type information associated to one ImGuiDataType. Retrieve with DataTypeGetInfo().
 struct ImGuiDataTypeInfo
 {
    size_t      Size;           // Size in bytes
    const char* Name;           // Short descriptive name for the type, for debugging
    const char* PrintFmt;       // Default printf format for the type
    const char* ScanFmt;        // Default scanf format for the type
 };
 // Extend ImGuiDataType_
 enum ImGuiDataTypePrivate_
 {
    ImGuiDataType_String = ImGuiDataType_COUNT + 1,
    ImGuiDataType_Pointer,
    ImGuiDataType_ID,
 };
 // Stacked color modifier, backup of modified data so we can restore it
 struct ImGuiColorMod
 {
@ -1106,7 +1069,7 @@ struct IMGUI_API ImGuiInputTextState
    int                     CurLenW, CurLenA;       // we need to maintain our buffer length in both UTF-8 and wchar format. UTF-8 length is valid even if TextA is not.
    ImVector<ImWchar>       TextW;                  // edit buffer, we need to persist but can't guarantee the persistence of the user-provided buffer. so we copy into own buffer.
    ImVector<char>          TextA;                  // temporary UTF8 buffer for callbacks and other operations. this is not updated in every code-path! size=capacity.
-    ImVector<char>          InitialTextA;           // backup of end-user buffer at the time of focus (in UTF-8, unaltered)
+    ImVector<char>          InitialTextA;           // value to revert to when pressing Escape = backup of end-user buffer at the time of focus (in UTF-8, unaltered)
    bool                    TextAIsValid;           // temporary UTF8 buffer is not initially valid before we make the widget active (until then we pull the data from user argument)
    int                     BufCapacityA;           // end-user buffer capacity
    float                   ScrollX;                // horizontal scrolling/offset
@ -1116,6 +1079,9 @@ struct IMGUI_API ImGuiInputTextState
    bool                    SelectedAllMouseLock;   // after a double-click to select all, we ignore further mouse drags to update selection
    bool                    Edited;                 // edited this frame
    ImGuiInputTextFlags     Flags;                  // copy of InputText() flags. may be used to check if e.g. ImGuiInputTextFlags_Password is set.
    bool                    ReloadUserBuf;          // force a reload of user buf so it may be modified externally. may be automatic in future version.
    int                     ReloadSelectionStart;   // POSITIONS ARE IN IMWCHAR units *NOT* UTF-8 this is why this is not exposed yet.
    int                     ReloadSelectionEnd;
    ImGuiInputTextState()                   { memset(this, 0, sizeof(*this)); }
    void        ClearText()                 { CurLenW = CurLenA = 0; TextW[0] = 0; TextA[0] = 0; CursorClamp(); }
@ -1133,21 +1099,16 @@ struct IMGUI_API ImGuiInputTextState
    int         GetSelectionStart() const   { return Stb.select_start; }
    int         GetSelectionEnd() const     { return Stb.select_end; }
    void        SelectAll()                 { Stb.select_start = 0; Stb.cursor = Stb.select_end = CurLenW; Stb.has_preferred_x = 0; }
 };
-// Storage for current popup stack
+    // Reload user buf (WIP #2890)
-struct ImGuiPopupData
+    // If you modify underlying user-passed const char* while active you need to call this (InputText V2 may lift this)
-{
+    //   strcpy(my_buf, "hello");
-    ImGuiID             PopupId;        // Set on OpenPopup()
+    //   if (ImGuiInputTextState* state = ImGui::GetInputTextState(id)) // id may be ImGui::GetItemID() is last item
-    ImGuiWindow*        Window;         // Resolved on BeginPopup() - may stay unresolved if user never calls OpenPopup()
+    //       state->ReloadUserBufAndSelectAll();
-    ImGuiWindow*        BackupNavWindow;// Set on OpenPopup(), a NavWindow that will be restored on popup close
+    void        ReloadUserBufAndSelectAll()     { ReloadUserBuf = true; ReloadSelectionStart = 0; ReloadSelectionEnd = INT_MAX; }
-    int                 ParentNavLayer; // Resolved on BeginPopup(). Actually a ImGuiNavLayer type (declared down below), initialized to -1 which is not part of an enum, but serves well-enough as "not any of layers" value
+    void        ReloadUserBufAndKeepSelection() { ReloadUserBuf = true; ReloadSelectionStart = Stb.select_start; ReloadSelectionEnd = Stb.select_end; }
-    int                 OpenFrameCount; // Set on OpenPopup()
+    void        ReloadUserBufAndMoveToEnd()     { ReloadUserBuf = true; ReloadSelectionStart = ReloadSelectionEnd = INT_MAX; }
    ImGuiID             OpenParentId;   // Set on OpenPopup(), we need this to differentiate multiple menu sets from each others (e.g. inside menu bar vs loose menu items)
    ImVec2              OpenPopupPos;   // Set on OpenPopup(), preferred popup position (typically == OpenMousePos when using mouse)
    ImVec2              OpenMousePos;   // Set on OpenPopup(), copy of mouse position at the time of opening popup
    ImGuiPopupData()    { memset(this, 0, sizeof(*this)); ParentNavLayer = OpenFrameCount = -1; }
 };
 enum ImGuiNextWindowDataFlags_
@ -1194,9 +1155,10 @@ typedef ImS64 ImGuiSelectionUserData;
 enum ImGuiNextItemDataFlags_
 {
-    ImGuiNextItemDataFlags_None     = 0,
+    ImGuiNextItemDataFlags_None         = 0,
-    ImGuiNextItemDataFlags_HasWidth = 1 << 0,
+    ImGuiNextItemDataFlags_HasWidth     = 1 << 0,
-    ImGuiNextItemDataFlags_HasOpen  = 1 << 1,
+    ImGuiNextItemDataFlags_HasOpen      = 1 << 1,
    ImGuiNextItemDataFlags_HasShortcut  = 1 << 2,
 };
 struct ImGuiNextItemData
@ -1204,10 +1166,11 @@ struct ImGuiNextItemData
    ImGuiNextItemDataFlags      Flags;
    ImGuiItemFlags              ItemFlags;          // Currently only tested/used for ImGuiItemFlags_AllowOverlap.
    // Non-flags members are NOT cleared by ItemAdd() meaning they are still valid during NavProcessItem()
    float                       Width;              // Set by SetNextItemWidth()
    ImGuiSelectionUserData      SelectionUserData;  // Set by SetNextItemSelectionUserData() (note that NULL/0 is a valid value, we use -1 == ImGuiSelectionUserData_Invalid to mark invalid values)
-    ImGuiCond                   OpenCond;
+    float                       Width;              // Set by SetNextItemWidth()
    ImGuiKeyChord               Shortcut;           // Set by SetNextItemShortcut()
    bool                        OpenVal;            // Set by SetNextItemOpen()
    ImGuiCond                   OpenCond : 8;
    ImGuiNextItemData()         { memset(this, 0, sizeof(*this)); SelectionUserData = -1; }
    inline void ClearFlags()    { Flags = ImGuiNextItemDataFlags_None; ItemFlags = ImGuiItemFlags_None; } // Also cleared manually by ItemAdd()!
@ -1279,6 +1242,66 @@ struct ImGuiPtrOrIndex
    ImGuiPtrOrIndex(int index)  { Ptr = NULL; Index = index; }
 };
 //-----------------------------------------------------------------------------
 // [SECTION] Data types support
 //-----------------------------------------------------------------------------
 struct ImGuiDataVarInfo
 {
    ImGuiDataType   Type;
    ImU32           Count;      // 1+
    ImU32           Offset;     // Offset in parent structure
    void* GetVarPtr(void* parent) const { return (void*)((unsigned char*)parent + Offset); }
 };
 struct ImGuiDataTypeTempStorage
 {
    ImU8        Data[8];        // Can fit any data up to ImGuiDataType_COUNT
 };
 // Type information associated to one ImGuiDataType. Retrieve with DataTypeGetInfo().
 struct ImGuiDataTypeInfo
 {
    size_t      Size;           // Size in bytes
    const char* Name;           // Short descriptive name for the type, for debugging
    const char* PrintFmt;       // Default printf format for the type
    const char* ScanFmt;        // Default scanf format for the type
 };
 // Extend ImGuiDataType_
 enum ImGuiDataTypePrivate_
 {
    ImGuiDataType_String = ImGuiDataType_COUNT + 1,
    ImGuiDataType_Pointer,
    ImGuiDataType_ID,
 };
 //-----------------------------------------------------------------------------
 // [SECTION] Popup support
 //-----------------------------------------------------------------------------
 enum ImGuiPopupPositionPolicy
 {
    ImGuiPopupPositionPolicy_Default,
    ImGuiPopupPositionPolicy_ComboBox,
    ImGuiPopupPositionPolicy_Tooltip,
 };
 // Storage for popup stacks (g.OpenPopupStack and g.BeginPopupStack)
 struct ImGuiPopupData
 {
    ImGuiID             PopupId;        // Set on OpenPopup()
    ImGuiWindow*        Window;         // Resolved on BeginPopup() - may stay unresolved if user never calls OpenPopup()
    ImGuiWindow*        BackupNavWindow;// Set on OpenPopup(), a NavWindow that will be restored on popup close
    int                 ParentNavLayer; // Resolved on BeginPopup(). Actually a ImGuiNavLayer type (declared down below), initialized to -1 which is not part of an enum, but serves well-enough as "not any of layers" value
    int                 OpenFrameCount; // Set on OpenPopup()
    ImGuiID             OpenParentId;   // Set on OpenPopup(), we need this to differentiate multiple menu sets from each others (e.g. inside menu bar vs loose menu items)
    ImVec2              OpenPopupPos;   // Set on OpenPopup(), preferred popup position (typically == OpenMousePos when using mouse)
    ImVec2              OpenMousePos;   // Set on OpenPopup(), copy of mouse position at the time of opening popup
    ImGuiPopupData()    { memset(this, 0, sizeof(*this)); ParentNavLayer = OpenFrameCount = -1; }
 };
 //-----------------------------------------------------------------------------
 // [SECTION] Inputs support
 //-----------------------------------------------------------------------------
@ -1369,11 +1392,12 @@ struct ImGuiKeyRoutingData
 {
    ImGuiKeyRoutingIndex            NextEntryIndex;
    ImU16                           Mods;               // Technically we'd only need 4-bits but for simplify we store ImGuiMod_ values which need 16-bits. ImGuiMod_Shortcut is already translated to Ctrl/Super.
    ImU8                            RoutingCurrScore;   // [DEBUG] For debug display
    ImU8                            RoutingNextScore;   // Lower is better (0: perfect score)
    ImGuiID                         RoutingCurr;
    ImGuiID                         RoutingNext;
-    ImGuiKeyRoutingData()           { NextEntryIndex = -1; Mods = 0; RoutingNextScore = 255; RoutingCurr = RoutingNext = ImGuiKeyOwner_None; }
+    ImGuiKeyRoutingData()           { NextEntryIndex = -1; Mods = 0; RoutingCurrScore = RoutingNextScore = 255; RoutingCurr = RoutingNext = ImGuiKeyOwner_None; }
 };
 // Routing table: maintain a desired owner for each possible key-chord (key + mods), and setup owner in NewFrame() when mods are matching.
@ -1401,17 +1425,19 @@ struct ImGuiKeyOwnerData
 };
 // Flags for extended versions of IsKeyPressed(), IsMouseClicked(), Shortcut(), SetKeyOwner(), SetItemKeyOwner()
-// Don't mistake with ImGuiInputTextFlags! (for ImGui::InputText() function)
+// Don't mistake with ImGuiInputTextFlags! (which is for ImGui::InputText() function)
 enum ImGuiInputFlags_
 {
    // Flags for IsKeyPressed(), IsKeyChordPressed(), IsMouseClicked(), Shortcut()
    ImGuiInputFlags_None                = 0,
-    ImGuiInputFlags_Repeat              = 1 << 0,   // Return true on successive repeats. Default for legacy IsKeyPressed(). NOT Default for legacy IsMouseClicked(). MUST BE == 1.
+
    // Repeat mode
    ImGuiInputFlags_Repeat              = 1 << 0,   // Enable repeat. Return true on successive repeats. Default for legacy IsKeyPressed(). NOT Default for legacy IsMouseClicked(). MUST BE == 1.
    ImGuiInputFlags_RepeatRateDefault   = 1 << 1,   // Repeat rate: Regular (default)
    ImGuiInputFlags_RepeatRateNavMove   = 1 << 2,   // Repeat rate: Fast
    ImGuiInputFlags_RepeatRateNavTweak  = 1 << 3,   // Repeat rate: Faster
-    // Specify when repeating key pressed can be interrupted.
+    // Repeat mode: Specify when repeating key pressed can be interrupted.
    // In theory ImGuiInputFlags_RepeatUntilOtherKeyPress may be a desirable default, but it would break too many behavior so everything is opt-in.
    ImGuiInputFlags_RepeatUntilRelease               = 1 << 4,  // Stop repeating when released (default for all functions except Shortcut). This only exists to allow overriding Shortcut() default behavior.
    ImGuiInputFlags_RepeatUntilKeyModsChange         = 1 << 5,  // Stop repeating when released OR if keyboard mods are changed (default for Shortcut)
@ -1422,38 +1448,46 @@ enum ImGuiInputFlags_
    ImGuiInputFlags_CondHovered         = 1 << 8,   // Only set if item is hovered (default to both)
    ImGuiInputFlags_CondActive          = 1 << 9,   // Only set if item is active (default to both)
    ImGuiInputFlags_CondDefault_        = ImGuiInputFlags_CondHovered | ImGuiInputFlags_CondActive,
    ImGuiInputFlags_CondMask_           = ImGuiInputFlags_CondHovered | ImGuiInputFlags_CondActive,
    // Flags for SetKeyOwner(), SetItemKeyOwner()
-    ImGuiInputFlags_LockThisFrame       = 1 << 10,  // Access to key data will require EXPLICIT owner ID (ImGuiKeyOwner_Any/0 will NOT accepted for polling). Cleared at end of frame. This is useful to make input-owner-aware code steal keys from non-input-owner-aware code.
+    // Locking is useful to make input-owner-aware code steal keys from non-input-owner-aware code. If all code is input-owner-aware locking would never be necessary.
-    ImGuiInputFlags_LockUntilRelease    = 1 << 11,  // Access to key data will require EXPLICIT owner ID (ImGuiKeyOwner_Any/0 will NOT accepted for polling). Cleared when the key is released or at end of each frame if key is released. This is useful to make input-owner-aware code steal keys from non-input-owner-aware code.
+    ImGuiInputFlags_LockThisFrame       = 1 << 10,  // Further accesses to key data will require EXPLICIT owner ID (ImGuiKeyOwner_Any/0 will NOT accepted for polling). Cleared at end of frame.
    ImGuiInputFlags_LockUntilRelease    = 1 << 11,  // Further accesses to key data will require EXPLICIT owner ID (ImGuiKeyOwner_Any/0 will NOT accepted for polling). Cleared when the key is released or at end of each frame if key is released.
    // Routing policies for Shortcut() + low-level SetShortcutRouting()
    // - The general idea is that several callers register interest in a shortcut, and only one owner gets it.
-    // - When a policy (other than _RouteAlways) is set, Shortcut() will register itself with SetShortcutRouting(),
+    //      Parent   -> call Shortcut(Ctrl+S)    // When Parent is focused, Parent gets the shortcut.
    //        Child1 -> call Shortcut(Ctrl+S)    // When Child1 is focused, Child1 gets the shortcut (Child1 overrides Parent shortcuts)
    //        Child2 -> no call                  // When Child2 is focused, Parent gets the shortcut.
    //   The whole system is order independent, so if Child1 does it calls before Parent results will be identical.
    //   This is an important property as it facilitate working with foreign code or larger codebase.
    // - Visualize registered routes in 'Metrics->Inputs' and submitted routes in 'Debug Log->InputRouting'.
    // - When a policy (except for _RouteAlways *) is set, Shortcut() will register itself with SetShortcutRouting(),
    //   allowing the system to decide where to route the input among other route-aware calls.
-    // - Shortcut() uses ImGuiInputFlags_RouteFocused by default: meaning that a simple Shortcut() poll
+    //   (* Using ImGuiInputFlags_RouteAlways is roughly equivalent to calling IsKeyChordPressed(key)).
-    //   will register a route and only succeed when parent window is in the focus stack and if no-one
+    // - Shortcut() uses ImGuiInputFlags_RouteFocused by default. Meaning that a Shortcut() call will register
-    //   with a higher priority is claiming the shortcut.
+    //   a route and only succeed when parent window is in the focus-stack and if no-one with a higher priority
-    // - Using ImGuiInputFlags_RouteAlways is roughly equivalent to doing e.g. IsKeyPressed(key) + testing mods.
+    //   is claiming the same shortcut.
    // - You can chain two unrelated windows in the focus stack using SetWindowParentWindowForFocusRoute().
    // - Priorities: GlobalHigh > Focused (when owner is active item) > Global > Focused (when focused window) > GlobalLow.
    // - Can select only 1 policy among all available.
-    ImGuiInputFlags_RouteFocused        = 1 << 12,  // (Default) Register focused route: Accept inputs if window is in focus stack. Deep-most focused window takes inputs. ActiveId takes inputs over deep-most focused window.
+    ImGuiInputFlags_RouteFocused        = 1 << 12,  // (Default) Honor focus route: Accept inputs if window is in focus stack. Deep-most focused window takes inputs. ActiveId takes inputs over deep-most focused window.
-    ImGuiInputFlags_RouteGlobalLow      = 1 << 13,  // Register route globally (lowest priority: unless a focused window or active item registered the route) -> recommended Global priority.
+    ImGuiInputFlags_RouteGlobalLow      = 1 << 13,  // Register route globally (lowest priority: unless a focused window or active item registered the route) -> recommended Global priority IF you need a Global priority.
-    ImGuiInputFlags_RouteGlobal         = 1 << 14,  // Register route globally (medium priority: unless an active item registered the route, e.g. CTRL+A registered by InputText).
+    ImGuiInputFlags_RouteGlobal         = 1 << 14,  // Register route globally (medium priority: unless an active item registered the route, e.g. CTRL+A registered by InputText will take priority over this).
-    ImGuiInputFlags_RouteGlobalHigh     = 1 << 15,  // Register route globally (highest priority: unlikely you need to use that: will interfere with every active items)
+    ImGuiInputFlags_RouteGlobalHigh     = 1 << 15,  // Register route globally (higher priority: unlikely you need to use that: will interfere with every active items, e.g. CTRL+A registered by InputText will be overriden by this)
    ImGuiInputFlags_RouteMask_          = ImGuiInputFlags_RouteFocused | ImGuiInputFlags_RouteGlobal | ImGuiInputFlags_RouteGlobalLow | ImGuiInputFlags_RouteGlobalHigh, // _Always not part of this!
    ImGuiInputFlags_RouteAlways         = 1 << 16,  // Do not register route, poll keys directly.
    // Routing polices: extra options
    ImGuiInputFlags_RouteUnlessBgFocused= 1 << 17,  // Global routes will not be applied if underlying background/void is focused (== no Dear ImGui windows are focused). Useful for overlay applications.
    ImGuiInputFlags_RouteExtraMask_     = ImGuiInputFlags_RouteAlways | ImGuiInputFlags_RouteUnlessBgFocused,
    // [Internal] Mask of which function support which flags
    ImGuiInputFlags_RepeatRateMask_             = ImGuiInputFlags_RepeatRateDefault | ImGuiInputFlags_RepeatRateNavMove | ImGuiInputFlags_RepeatRateNavTweak,
    ImGuiInputFlags_RepeatUntilMask_            = ImGuiInputFlags_RepeatUntilRelease | ImGuiInputFlags_RepeatUntilKeyModsChange | ImGuiInputFlags_RepeatUntilKeyModsChangeFromNone | ImGuiInputFlags_RepeatUntilOtherKeyPress,
    ImGuiInputFlags_RepeatMask_                 = ImGuiInputFlags_Repeat | ImGuiInputFlags_RepeatRateMask_ | ImGuiInputFlags_RepeatUntilMask_,
    ImGuiInputFlags_CondMask_                   = ImGuiInputFlags_CondHovered | ImGuiInputFlags_CondActive,
    ImGuiInputFlags_RouteMask_                  = ImGuiInputFlags_RouteFocused | ImGuiInputFlags_RouteGlobal | ImGuiInputFlags_RouteGlobalLow | ImGuiInputFlags_RouteGlobalHigh, // _Always not part of this!
    ImGuiInputFlags_SupportedByIsKeyPressed     = ImGuiInputFlags_RepeatMask_,
    ImGuiInputFlags_SupportedByIsMouseClicked   = ImGuiInputFlags_Repeat,
-    ImGuiInputFlags_SupportedByShortcut         = ImGuiInputFlags_RepeatMask_ | ImGuiInputFlags_RouteMask_ | ImGuiInputFlags_RouteExtraMask_,
+    ImGuiInputFlags_SupportedByShortcut         = ImGuiInputFlags_RepeatMask_ | ImGuiInputFlags_RouteMask_ | ImGuiInputFlags_RouteAlways | ImGuiInputFlags_RouteUnlessBgFocused,
    ImGuiInputFlags_SupportedBySetKeyOwner      = ImGuiInputFlags_LockThisFrame | ImGuiInputFlags_LockUntilRelease,
    ImGuiInputFlags_SupportedBySetItemKeyOwner  = ImGuiInputFlags_SupportedBySetKeyOwner | ImGuiInputFlags_CondMask_,
 };
@ -1499,6 +1533,7 @@ enum ImGuiActivateFlags_
    ImGuiActivateFlags_PreferTweak          = 1 << 1,       // Favor activation for tweaking with arrows or gamepad (e.g. for Slider/Drag). Default for Space key and if keyboard is not used.
    ImGuiActivateFlags_TryToPreserveState   = 1 << 2,       // Request widget to preserve state if it can (e.g. InputText will try to preserve cursor/selection)
    ImGuiActivateFlags_FromTabbing          = 1 << 3,       // Activation requested by a tabbing request
    ImGuiActivateFlags_FromShortcut         = 1 << 4,       // Activation requested by an item shortcut via SetNextItemShortcut() function.
 };
 // Early work-in-progress API for ScrollToItem()
@ -1519,8 +1554,7 @@ enum ImGuiScrollFlags_
 enum ImGuiNavHighlightFlags_
 {
    ImGuiNavHighlightFlags_None             = 0,
-    ImGuiNavHighlightFlags_TypeDefault      = 1 << 0,
+    ImGuiNavHighlightFlags_Compact          = 1 << 1,       // Compact highlight, no padding
    ImGuiNavHighlightFlags_TypeThin         = 1 << 1,
    ImGuiNavHighlightFlags_AlwaysDraw       = 1 << 2,       // Draw rectangular highlight if (g.NavId == id) _even_ when using the mouse.
    ImGuiNavHighlightFlags_NoRounding       = 1 << 3,
 };
@ -1569,6 +1603,12 @@ struct ImGuiNavItemData
    void Clear()        { Window = NULL; ID = FocusScopeId = 0; InFlags = 0; SelectionUserData = -1; DistBox = DistCenter = DistAxial = FLT_MAX; }
 };
 struct ImGuiFocusScopeData
 {
    ImGuiID             ID;
    ImGuiID             WindowID;
 };
 //-----------------------------------------------------------------------------
 // [SECTION] Typing-select support
 //-----------------------------------------------------------------------------
@ -1788,8 +1828,9 @@ enum ImGuiDebugLogFlags_
    ImGuiDebugLogFlags_EventClipper         = 1 << 4,
    ImGuiDebugLogFlags_EventSelection       = 1 << 5,
    ImGuiDebugLogFlags_EventIO              = 1 << 6,
    ImGuiDebugLogFlags_EventInputRouting    = 1 << 7,
-    ImGuiDebugLogFlags_EventMask_           = ImGuiDebugLogFlags_EventActiveId  | ImGuiDebugLogFlags_EventFocus | ImGuiDebugLogFlags_EventPopup | ImGuiDebugLogFlags_EventNav | ImGuiDebugLogFlags_EventClipper | ImGuiDebugLogFlags_EventSelection | ImGuiDebugLogFlags_EventIO,
+    ImGuiDebugLogFlags_EventMask_           = ImGuiDebugLogFlags_EventActiveId  | ImGuiDebugLogFlags_EventFocus | ImGuiDebugLogFlags_EventPopup | ImGuiDebugLogFlags_EventNav | ImGuiDebugLogFlags_EventClipper | ImGuiDebugLogFlags_EventSelection | ImGuiDebugLogFlags_EventIO | ImGuiDebugLogFlags_EventInputRouting,
    ImGuiDebugLogFlags_OutputToTTY          = 1 << 20,  // Also send output to TTY
    ImGuiDebugLogFlags_OutputToTestEngine   = 1 << 21,  // Also send output to Test Engine
 };
@ -1824,6 +1865,8 @@ struct ImGuiMetricsConfig
    bool        ShowAtlasTintedWithTextColor = false;
    int         ShowWindowsRectsType = -1;
    int         ShowTablesRectsType = -1;
    int         HighlightMonitorIdx = -1;
    ImGuiID     HighlightViewportID = 0;
 };
 struct ImGuiStackLevelInfo
@ -1937,10 +1980,11 @@ struct ImGuiContext
    bool                    ActiveIdHasBeenPressedBefore;       // Track whether the active id led to a press (this is to allow changing between PressOnClick and PressOnRelease without pressing twice). Used by range_select branch.
    bool                    ActiveIdHasBeenEditedBefore;        // Was the value associated to the widget Edited over the course of the Active state.
    bool                    ActiveIdHasBeenEditedThisFrame;
    bool                    ActiveIdFromShortcut;
    int                     ActiveIdMouseButton : 8;
    ImVec2                  ActiveIdClickOffset;                // Clicked offset from upper-left corner, if applicable (currently only set by ButtonBehavior)
    ImGuiWindow*            ActiveIdWindow;
    ImGuiInputSource        ActiveIdSource;                     // Activating source: ImGuiInputSource_Mouse OR ImGuiInputSource_Keyboard OR ImGuiInputSource_Gamepad
    int                     ActiveIdMouseButton;
    ImGuiID                 ActiveIdPreviousFrame;
    bool                    ActiveIdPreviousFrameIsAlive;
    bool                    ActiveIdPreviousFrameHasBeenEditedBefore;
@ -1955,6 +1999,7 @@ struct ImGuiContext
    double                  LastKeyModsChangeTime;              // Record the last time key mods changed (affect repeat delay when using shortcut logic)
    double                  LastKeyModsChangeFromNoneTime;      // Record the last time key mods changed away from being 0 (affect repeat delay when using shortcut logic)
    double                  LastKeyboardKeyPressTime;           // Record the last time a keyboard key (ignore mouse/gamepad ones) was pressed.
    ImBitArrayForNamedKeys  KeysMayBeCharInput;                 // Lookup to tell if a key can emit char input, see IsKeyChordPotentiallyCharInput(). sizeof() = 20 bytes
    ImGuiKeyOwnerData       KeysOwnerData[ImGuiKey_NamedKey_COUNT];
    ImGuiKeyRoutingTable    KeysRoutingTable;
    ImU32                   ActiveIdUsingNavDirMask;            // Active widget will want to read those nav move requests (e.g. can activate a button and move away from it)
@ -1965,8 +2010,8 @@ struct ImGuiContext
 #endif
    // Next window/item data
-    ImGuiID                 CurrentFocusScopeId;                // == g.FocusScopeStack.back()
+    ImGuiID                 CurrentFocusScopeId;                // Value for currently appending items == g.FocusScopeStack.back(). Not to be mistaken with g.NavFocusScopeId.
-    ImGuiItemFlags          CurrentItemFlags;                   // == g.ItemFlagsStack.back()
+    ImGuiItemFlags          CurrentItemFlags;                   // Value for currently appending items == g.ItemFlagsStack.back()
    ImGuiID                 DebugLocateId;                      // Storage for DebugLocateItemOnHover() feature: this is read by ItemAdd() so we keep it in a hot/cached location
    ImGuiNextItemData       NextItemData;                       // Storage for SetNextItem** functions
    ImGuiLastItemData       LastItemData;                       // Storage for last submitted item (setup by ItemAdd)
@ -1974,18 +2019,16 @@ struct ImGuiContext
    bool                    DebugShowGroupRects;
    // Shared stacks
-    ImGuiCol                    DebugFlashStyleColorIdx;        // (Keep close to ColorStack to share cache line)
+    ImGuiCol                        DebugFlashStyleColorIdx;    // (Keep close to ColorStack to share cache line)
-    ImVector<ImGuiColorMod>     ColorStack;                     // Stack for PushStyleColor()/PopStyleColor() - inherited by Begin()
+    ImVector<ImGuiColorMod>         ColorStack;                 // Stack for PushStyleColor()/PopStyleColor() - inherited by Begin()
-    ImVector<ImGuiStyleMod>     StyleVarStack;                  // Stack for PushStyleVar()/PopStyleVar() - inherited by Begin()
+    ImVector<ImGuiStyleMod>         StyleVarStack;              // Stack for PushStyleVar()/PopStyleVar() - inherited by Begin()
-    ImVector<ImFont*>           FontStack;                      // Stack for PushFont()/PopFont() - inherited by Begin()
+    ImVector<ImFont*>               FontStack;                  // Stack for PushFont()/PopFont() - inherited by Begin()
-    ImVector<ImGuiID>           FocusScopeStack;                // Stack for PushFocusScope()/PopFocusScope() - inherited by BeginChild(), pushed into by Begin()
+    ImVector<ImGuiFocusScopeData>   FocusScopeStack;            // Stack for PushFocusScope()/PopFocusScope() - inherited by BeginChild(), pushed into by Begin()
-    ImVector<ImGuiItemFlags>    ItemFlagsStack;                 // Stack for PushItemFlag()/PopItemFlag() - inherited by Begin()
+    ImVector<ImGuiItemFlags>        ItemFlagsStack;             // Stack for PushItemFlag()/PopItemFlag() - inherited by Begin()
-    ImVector<ImGuiGroupData>    GroupStack;                     // Stack for BeginGroup()/EndGroup() - not inherited by Begin()
+    ImVector<ImGuiGroupData>        GroupStack;                 // Stack for BeginGroup()/EndGroup() - not inherited by Begin()
-    ImVector<ImGuiPopupData>    OpenPopupStack;                 // Which popups are open (persistent)
+    ImVector<ImGuiPopupData>        OpenPopupStack;             // Which popups are open (persistent)
-    ImVector<ImGuiPopupData>    BeginPopupStack;                // Which level of BeginPopup() we are in (reset every frame)
+    ImVector<ImGuiPopupData>        BeginPopupStack;            // Which level of BeginPopup() we are in (reset every frame)
-    ImVector<ImGuiNavTreeNodeData> NavTreeNodeStack;            // Stack for TreeNode() when a NavLeft requested is emitted.
+    ImVector<ImGuiNavTreeNodeData>  NavTreeNodeStack;           // Stack for TreeNode() when a NavLeft requested is emitted.
    int                     BeginMenuCount;
    // Viewports
    ImVector<ImGuiViewportP*> Viewports;                        // Active viewports (Size==1 in 'master' branch). Each viewports hold their copy of ImDrawData.
@ -1993,11 +2036,14 @@ struct ImGuiContext
    // Gamepad/keyboard Navigation
    ImGuiWindow*            NavWindow;                          // Focused window for navigation. Could be called 'FocusedWindow'
    ImGuiID                 NavId;                              // Focused item for navigation
-    ImGuiID                 NavFocusScopeId;                    // Identify a selection scope (selection code often wants to "clear other items" when landing on an item of the selection set)
+    ImGuiID                 NavFocusScopeId;                    // Focused focus scope (e.g. selection code often wants to "clear other items" when landing on an item of the same scope)
    ImVector<ImGuiFocusScopeData> NavFocusRoute;                // Reversed copy focus scope stack for NavId (should contains NavFocusScopeId). This essentially follow the window->ParentWindowForFocusRoute chain.
    ImGuiID                 NavActivateId;                      // ~~ (g.ActiveId == 0) && (IsKeyPressed(ImGuiKey_Space) || IsKeyDown(ImGuiKey_Enter) || IsKeyPressed(ImGuiKey_NavGamepadActivate)) ? NavId : 0, also set when calling ActivateItem()
    ImGuiID                 NavActivateDownId;                  // ~~ IsKeyDown(ImGuiKey_Space) || IsKeyDown(ImGuiKey_Enter) || IsKeyDown(ImGuiKey_NavGamepadActivate) ? NavId : 0
    ImGuiID                 NavActivatePressedId;               // ~~ IsKeyPressed(ImGuiKey_Space) || IsKeyPressed(ImGuiKey_Enter) || IsKeyPressed(ImGuiKey_NavGamepadActivate) ? NavId : 0 (no repeat)
    ImGuiActivateFlags      NavActivateFlags;
    ImGuiID                 NavHighlightActivatedId;
    float                   NavHighlightActivatedTimer;
    ImGuiID                 NavJustMovedToId;                   // Just navigated to this id (result of a successfully MoveRequest).
    ImGuiID                 NavJustMovedToFocusScopeId;         // Just navigated to this focus scope id (result of a successfully MoveRequest).
    ImGuiKeyChord           NavJustMovedToKeyMods;
@ -2044,6 +2090,7 @@ struct ImGuiContext
    float                   NavWindowingTimer;
    float                   NavWindowingHighlightAlpha;
    bool                    NavWindowingToggleLayer;
    ImGuiKey                NavWindowingToggleKey;
    ImVec2                  NavWindowingAccumDeltaPos;
    ImVec2                  NavWindowingAccumDeltaSize;
@ -2107,6 +2154,8 @@ struct ImGuiContext
    ImGuiInputTextDeactivatedState InputTextDeactivatedState;
    ImFont                  InputTextPasswordFont;
    ImGuiID                 TempInputId;                        // Temporary text input when CTRL+clicking on a slider, etc.
    int                     BeginMenuDepth;
    int                     BeginComboDepth;
    ImGuiColorEditFlags     ColorEditOptions;                   // Store user options for color edit widgets
    ImGuiID                 ColorEditCurrentID;                 // Set temporarily while inside of the parent-most ColorEdit4/ColorPicker4 (because they call each others).
    ImGuiID                 ColorEditSavedID;                   // ID we are saving/restoring HS for
@ -2163,6 +2212,7 @@ struct ImGuiContext
    int                     LogDepthToExpandDefault;            // Default/stored value for LogDepthMaxExpand if not specified in the LogXXX function call.
    // Debug Tools
    // (some of the highly frequently used data are interleaved in other structures above: DebugBreakXXX fields, DebugHookIdInfo, DebugLocateId etc.)
    ImGuiDebugLogFlags      DebugLogFlags;
    ImGuiTextBuffer         DebugLogBuf;
    ImGuiTextIndex          DebugLogIndex;
@ -2190,6 +2240,7 @@ struct ImGuiContext
    int                     WantCaptureKeyboardNextFrame;       // "
    int                     WantTextInputNextFrame;
    ImVector<char>          TempBuffer;                         // Temporary text buffer
    char                    TempKeychordName[64];
    ImGuiContext(ImFontAtlas* shared_font_atlas)
    {
@ -2235,6 +2286,7 @@ struct ImGuiContext
        ActiveIdHasBeenPressedBefore = false;
        ActiveIdHasBeenEditedBefore = false;
        ActiveIdHasBeenEditedThisFrame = false;
        ActiveIdFromShortcut = false;
        ActiveIdClickOffset = ImVec2(-1, -1);
        ActiveIdWindow = NULL;
        ActiveIdSource = ImGuiInputSource_None;
@ -2257,12 +2309,13 @@ struct ImGuiContext
        CurrentFocusScopeId = 0;
        CurrentItemFlags = ImGuiItemFlags_None;
        DebugShowGroupRects = false;
        BeginMenuCount = 0;
        NavWindow = NULL;
        NavId = NavFocusScopeId = NavActivateId = NavActivateDownId = NavActivatePressedId = 0;
        NavJustMovedToId = NavJustMovedToFocusScopeId = NavNextActivateId = 0;
        NavActivateFlags = NavNextActivateFlags = ImGuiActivateFlags_None;
        NavHighlightActivatedId = 0;
        NavHighlightActivatedTimer = 0.0f;
        NavJustMovedToKeyMods = ImGuiMod_None;
        NavInputSource = ImGuiInputSource_Keyboard;
        NavLayer = ImGuiNavLayer_Main;
@ -2290,6 +2343,7 @@ struct ImGuiContext
        NavWindowingTarget = NavWindowingTargetAnim = NavWindowingListWindow = NULL;
        NavWindowingTimer = NavWindowingHighlightAlpha = 0.0f;
        NavWindowingToggleLayer = false;
        NavWindowingToggleKey = ImGuiKey_None;
        DimBgRatio = 0.0f;
@ -2318,6 +2372,7 @@ struct ImGuiContext
        MouseStationaryTimer = 0.0f;
        TempInputId = 0;
        BeginMenuDepth = BeginComboDepth = 0;
        ColorEditOptions = ImGuiColorEditFlags_DefaultOptions_;
        ColorEditCurrentID = ColorEditSavedID = 0;
        ColorEditSavedHue = ColorEditSavedSat = 0.0f;
@ -2376,6 +2431,7 @@ struct ImGuiContext
        FramerateSecPerFrameIdx = FramerateSecPerFrameCount = 0;
        FramerateSecPerFrameAccum = 0.0f;
        WantCaptureMouseNextFrame = WantCaptureKeyboardNextFrame = WantTextInputNextFrame = -1;
        memset(TempKeychordName, 0, sizeof(TempKeychordName));
    }
 };
@ -2425,6 +2481,7 @@ struct IMGUI_API ImGuiWindowTempData
    int                     CurrentTableIdx;        // Current table index (into g.Tables)
    ImGuiLayoutType         LayoutType;
    ImGuiLayoutType         ParentLayoutType;       // Layout type of parent window at the time of Begin()
    ImU32                   ModalDimBgColor;
    // Local parameters stacks
    // We store the current settings outside of the vectors to increase memory locality (reduce cache misses). The vectors are rarely modified. Also it allows us to not heap allocate for short-lived windows which are not using those settings.
@ -2528,6 +2585,7 @@ struct IMGUI_API ImGuiWindow
    ImGuiWindow*            RootWindowPopupTree;                // Point to ourself or first ancestor that is not a child window. Cross through popups parent<>child.
    ImGuiWindow*            RootWindowForTitleBarHighlight;     // Point to ourself or first ancestor which will display TitleBgActive color when this window is active.
    ImGuiWindow*            RootWindowForNav;                   // Point to ourself or first ancestor which doesn't have the NavFlattened flag.
    ImGuiWindow*            ParentWindowForFocusRoute;          // Set to manual link a window to its logical parent so that Shortcut() chain are honoerd (e.g. Tool linked to Document)
    ImGuiWindow*            NavLastChildNavWindow;              // When going to the menu bar, we remember the child window we came from. (This could probably be made implicit if we kept g.Windows sorted by last focused including child window.)
    ImGuiID                 NavLastIds[ImGuiNavLayer_COUNT];    // Last known NavId for this window, per layer (0/1)
@ -2859,7 +2917,7 @@ struct IMGUI_API ImGuiTableTempData
 {
    int                         TableIndex;                 // Index in g.Tables.Buf[] pool
    float                       LastTimeActive;             // Last timestamp this structure was used
-    float                       AngledheadersExtraWidth;    // Used in EndTable()
+    float                       AngledHeadersExtraWidth;    // Used in EndTable()
    ImVec2                      UserOuterSize;              // outer_size.x passed to BeginTable()
    ImDrawListSplitter          DrawSplitter;
@ -2941,6 +2999,7 @@ namespace ImGui
    IMGUI_API void          SetWindowCollapsed(ImGuiWindow* window, bool collapsed, ImGuiCond cond = 0);
    IMGUI_API void          SetWindowHitTestHole(ImGuiWindow* window, const ImVec2& pos, const ImVec2& size);
    IMGUI_API void          SetWindowHiddenAndSkipItemsForCurrentFrame(ImGuiWindow* window);
    inline void             SetWindowParentWindowForFocusRoute(ImGuiWindow* window, ImGuiWindow* parent_window) { window->ParentWindowForFocusRoute = parent_window; }
    inline ImRect           WindowRectAbsToRel(ImGuiWindow* window, const ImRect& r) { ImVec2 off = window->DC.CursorStartPos; return ImRect(r.Min.x - off.x, r.Min.y - off.y, r.Max.x - off.x, r.Max.y - off.y); }
    inline ImRect           WindowRectRelToAbs(ImGuiWindow* window, const ImRect& r) { ImVec2 off = window->DC.CursorStartPos; return ImRect(r.Min.x + off.x, r.Min.y + off.y, r.Max.x + off.x, r.Max.y + off.y); }
    inline ImVec2           WindowPosRelToAbs(ImGuiWindow* window, const ImVec2& p)  { ImVec2 off = window->DC.CursorStartPos; return ImVec2(p.x + off.x, p.y + off.y); }
@ -3094,11 +3153,13 @@ namespace ImGui
    IMGUI_API void          NavMoveRequestCancel();
    IMGUI_API void          NavMoveRequestApplyResult();
    IMGUI_API void          NavMoveRequestTryWrapping(ImGuiWindow* window, ImGuiNavMoveFlags move_flags);
    IMGUI_API void          NavHighlightActivated(ImGuiID id);
    IMGUI_API void          NavClearPreferredPosForAxis(ImGuiAxis axis);
    IMGUI_API void          NavRestoreHighlightAfterMove();
    IMGUI_API void          NavUpdateCurrentWindowIsScrollPushableX();
    IMGUI_API void          SetNavWindow(ImGuiWindow* window);
    IMGUI_API void          SetNavID(ImGuiID id, ImGuiNavLayer nav_layer, ImGuiID focus_scope_id, const ImRect& rect_rel);
    IMGUI_API void          SetNavFocusScope(ImGuiID focus_scope_id);
    // Focus/Activation
    // This should be part of a larger set of API: FocusItem(offset = -1), FocusItemByID(id), ActivateItem(offset = -1), ActivateItemByID(id) etc. which are
@ -3115,7 +3176,8 @@ namespace ImGui
    inline bool             IsGamepadKey(ImGuiKey key)                                  { return key >= ImGuiKey_Gamepad_BEGIN && key < ImGuiKey_Gamepad_END; }
    inline bool             IsMouseKey(ImGuiKey key)                                    { return key >= ImGuiKey_Mouse_BEGIN && key < ImGuiKey_Mouse_END; }
    inline bool             IsAliasKey(ImGuiKey key)                                    { return key >= ImGuiKey_Aliases_BEGIN && key < ImGuiKey_Aliases_END; }
-    inline ImGuiKeyChord    ConvertShortcutMod(ImGuiKeyChord key_chord)                 { ImGuiContext& g = *GImGui; IM_ASSERT_PARANOID(key_chord & ImGuiMod_Shortcut); return (key_chord & ~ImGuiMod_Shortcut) | (g.IO.ConfigMacOSXBehaviors ? ImGuiMod_Super : ImGuiMod_Ctrl); }
+    inline bool             IsModKey(ImGuiKey key)                                      { return key >= ImGuiKey_LeftCtrl && key <= ImGuiKey_RightSuper; }
    ImGuiKeyChord           FixupKeyChord(ImGuiContext* ctx, ImGuiKeyChord key_chord);
    inline ImGuiKey         ConvertSingleModFlagToKey(ImGuiContext* ctx, ImGuiKey key)
    {
        ImGuiContext& g = *ctx;
@ -3129,7 +3191,7 @@ namespace ImGui
    IMGUI_API ImGuiKeyData* GetKeyData(ImGuiContext* ctx, ImGuiKey key);
    inline ImGuiKeyData*    GetKeyData(ImGuiKey key)                                    { ImGuiContext& g = *GImGui; return GetKeyData(&g, key); }
-    IMGUI_API const char*   GetKeyChordName(ImGuiKeyChord key_chord, char* out_buf, int out_buf_size);
+    IMGUI_API const char*   GetKeyChordName(ImGuiKeyChord key_chord);
    inline ImGuiKey         MouseButtonToKey(ImGuiMouseButton button)                   { IM_ASSERT(button >= 0 && button < ImGuiMouseButton_COUNT); return (ImGuiKey)(ImGuiKey_MouseLeft + button); }
    IMGUI_API bool          IsMouseDragPastThreshold(ImGuiMouseButton button, float lock_threshold = -1.0f);
    IMGUI_API ImVec2        GetKeyMagnitude2d(ImGuiKey key_left, ImGuiKey key_right, ImGuiKey key_up, ImGuiKey key_down);
@ -3186,8 +3248,9 @@ namespace ImGui
    //   - IsKeyChordPressed() compares mods + call IsKeyPressed() -> function has no side-effect.
    //   - Shortcut() submits a route then if currently can be routed calls IsKeyChordPressed() -> function has (desirable) side-effects.
    IMGUI_API bool              IsKeyChordPressed(ImGuiKeyChord key_chord, ImGuiID owner_id, ImGuiInputFlags flags = 0);
    IMGUI_API void              SetNextItemShortcut(ImGuiKeyChord key_chord);
    IMGUI_API bool              Shortcut(ImGuiKeyChord key_chord, ImGuiID owner_id = 0, ImGuiInputFlags flags = 0);
-    IMGUI_API bool              SetShortcutRouting(ImGuiKeyChord key_chord, ImGuiID owner_id = 0, ImGuiInputFlags flags = 0);
+    IMGUI_API bool              SetShortcutRouting(ImGuiKeyChord key_chord, ImGuiID owner_id, ImGuiInputFlags flags = 0); // owner_id needs to be explicit and cannot be 0
    IMGUI_API bool              TestShortcutRouting(ImGuiKeyChord key_chord, ImGuiID owner_id);
    IMGUI_API ImGuiKeyRoutingData* GetShortcutRoutingData(ImGuiKeyChord key_chord);
@ -3238,7 +3301,7 @@ namespace ImGui
    IMGUI_API float         TableGetHeaderAngledMaxLabelWidth();
    IMGUI_API void          TablePushBackgroundChannel();
    IMGUI_API void          TablePopBackgroundChannel();
-    IMGUI_API void          TableAngledHeadersRowEx(float angle, float label_width = 0.0f);
+    IMGUI_API void          TableAngledHeadersRowEx(float angle, float max_label_width = 0.0f);
    // Tables: Internals
    inline    ImGuiTable*   GetCurrentTable() { ImGuiContext& g = *GImGui; return g.CurrentTable; }
@ -3316,7 +3379,7 @@ namespace ImGui
    IMGUI_API void          RenderFrame(ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, bool border = true, float rounding = 0.0f);
    IMGUI_API void          RenderFrameBorder(ImVec2 p_min, ImVec2 p_max, float rounding = 0.0f);
    IMGUI_API void          RenderColorRectWithAlphaCheckerboard(ImDrawList* draw_list, ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, float grid_step, ImVec2 grid_off, float rounding = 0.0f, ImDrawFlags flags = 0);
-    IMGUI_API void          RenderNavHighlight(const ImRect& bb, ImGuiID id, ImGuiNavHighlightFlags flags = ImGuiNavHighlightFlags_TypeDefault); // Navigation highlight
+    IMGUI_API void          RenderNavHighlight(const ImRect& bb, ImGuiID id, ImGuiNavHighlightFlags flags = ImGuiNavHighlightFlags_None); // Navigation highlight
    IMGUI_API const char*   FindRenderedTextEnd(const char* text, const char* text_end = NULL); // Find the optional ## from which we stop displaying text.
    IMGUI_API void          RenderMouseCursor(ImVec2 pos, float scale, ImGuiMouseCursor mouse_cursor, ImU32 col_fill, ImU32 col_border, ImU32 col_shadow);
@ -3421,7 +3484,6 @@ namespace ImGui
    IMGUI_API void          DebugBreakClearData();
    IMGUI_API bool          DebugBreakButton(const char* label, const char* description_of_location);
    IMGUI_API void          DebugBreakButtonTooltip(bool keyboard_only, const char* description_of_location);
    inline void             DebugStartItemPicker()                                  { ImGuiContext& g = *GImGui; g.DebugItemPickerActive = true; }
    IMGUI_API void          ShowFontAtlas(ImFontAtlas* atlas);
    IMGUI_API void          DebugHookIdInfo(ImGuiID id, ImGuiDataType data_type, const void* data_id, const void* data_id_end);
    IMGUI_API void          DebugNodeColumns(ImGuiOldColumns* columns);
@ -3448,13 +3510,12 @@ namespace ImGui
    inline void     SetItemUsingMouseWheel()                                            { SetItemKeyOwner(ImGuiKey_MouseWheelY); }      // Changed in 1.89
    inline bool     TreeNodeBehaviorIsOpen(ImGuiID id, ImGuiTreeNodeFlags flags = 0)    { return TreeNodeUpdateNextOpen(id, flags); }   // Renamed in 1.89
-    // Refactored focus/nav/tabbing system in 1.82 and 1.84. If you have old/custom copy-and-pasted widgets that used FocusableItemRegister():
+    // Refactored focus/nav/tabbing system in 1.82 and 1.84. If you have old/custom copy-and-pasted widgets which used FocusableItemRegister():
    //  (Old) IMGUI_VERSION_NUM  < 18209: using 'ItemAdd(....)'                              and 'bool tab_focused = FocusableItemRegister(...)'
-    //  (Old) IMGUI_VERSION_NUM >= 18209: using 'ItemAdd(..., ImGuiItemAddFlags_Focusable)'  and 'bool tab_focused = (GetItemStatusFlags() & ImGuiItemStatusFlags_Focused) != 0'
+    //  (Old) IMGUI_VERSION_NUM >= 18209: using 'ItemAdd(..., ImGuiItemAddFlags_Focusable)'  and 'bool tab_focused = (g.LastItemData.StatusFlags & ImGuiItemStatusFlags_Focused) != 0'
-    //  (New) IMGUI_VERSION_NUM >= 18413: using 'ItemAdd(..., ImGuiItemFlags_Inputable)'     and 'bool tab_focused = (GetItemStatusFlags() & ImGuiItemStatusFlags_FocusedTabbing) != 0 || (g.NavActivateId == id && (g.NavActivateFlags & ImGuiActivateFlags_PreferInput))' (WIP)
+    //  (New) IMGUI_VERSION_NUM >= 18413: using 'ItemAdd(..., ImGuiItemFlags_Inputable)'     and 'bool tab_focused = (g.NavActivateId == id && (g.NavActivateFlags & ImGuiActivateFlags_PreferInput))'
-    // Widget code are simplified as there's no need to call FocusableItemUnregister() while managing the transition from regular widget to TempInputText()
+    //inline bool   FocusableItemRegister(ImGuiWindow* window, ImGuiID id)              // -> pass ImGuiItemAddFlags_Inputable flag to ItemAdd()
-    inline bool     FocusableItemRegister(ImGuiWindow* window, ImGuiID id)              { IM_ASSERT(0); IM_UNUSED(window); IM_UNUSED(id); return false; } // -> pass ImGuiItemAddFlags_Inputable flag to ItemAdd()
+    //inline void   FocusableItemUnregister(ImGuiWindow* window)                        // -> unnecessary: TempInputText() uses ImGuiInputTextFlags_MergedItem
    inline void     FocusableItemUnregister(ImGuiWindow* window)                        { IM_ASSERT(0); IM_UNUSED(window); }                              // -> unnecessary: TempInputText() uses ImGuiInputTextFlags_MergedItem
 #endif
 #ifndef IMGUI_DISABLE_OBSOLETE_KEYIO
    inline bool     IsKeyPressedMap(ImGuiKey key, bool repeat = true)                   { IM_ASSERT(IsNamedKey(key)); return IsKeyPressed(key, repeat); } // Removed in 1.87: Mapping from named key is always identity!
--- a/dep/imgui/src/imgui.cpp
+++ b/dep/imgui/src/imgui.cpp
--- a/dep/imgui/src/imgui_demo.cpp
+++ b/dep/imgui/src/imgui_demo.cpp
@ -1,4 +1,4 @@
-// dear imgui, v1.90.1
+// dear imgui, v1.90.4
 // (demo code)
 // Help:
@ -401,6 +401,12 @@ void ImGui::ShowDemoWindow(bool* p_open)
            ImGui::MenuItem("Debug Log", NULL, &show_tool_debug_log, has_debug_tools);
            ImGui::MenuItem("ID Stack Tool", NULL, &show_tool_id_stack_tool, has_debug_tools);
            ImGui::MenuItem("Style Editor", NULL, &show_tool_style_editor);
            bool is_debugger_present = ImGui::GetIO().ConfigDebugIsDebuggerPresent;
            if (ImGui::MenuItem("Item Picker", NULL, false, has_debug_tools && is_debugger_present))
                ImGui::DebugStartItemPicker();
            if (!is_debugger_present)
                ImGui::SetItemTooltip("Requires io.ConfigDebugIsDebuggerPresent=true to be set.\n\nWe otherwise disable the menu option to avoid casual users crashing the application.\n\nYou can however always access the Item Picker in Metrics->Tools.");
            ImGui::Separator();
            ImGui::MenuItem("About Dear ImGui", NULL, &show_tool_about);
            ImGui::EndMenu();
        }
@ -5307,23 +5313,26 @@ static void ShowDemoWindowTables()
        const int rows_count = 12;
        static ImGuiTableFlags table_flags = ImGuiTableFlags_SizingFixedFit | ImGuiTableFlags_ScrollX | ImGuiTableFlags_ScrollY | ImGuiTableFlags_BordersOuter | ImGuiTableFlags_BordersInnerH | ImGuiTableFlags_Hideable | ImGuiTableFlags_Resizable | ImGuiTableFlags_Reorderable | ImGuiTableFlags_HighlightHoveredColumn;
        static ImGuiTableColumnFlags column_flags = ImGuiTableColumnFlags_AngledHeader | ImGuiTableColumnFlags_WidthFixed;
        static bool bools[columns_count * rows_count] = {}; // Dummy storage selection storage
        static int frozen_cols = 1;
        static int frozen_rows = 2;
        ImGui::CheckboxFlags("_ScrollX", &table_flags, ImGuiTableFlags_ScrollX);
        ImGui::CheckboxFlags("_ScrollY", &table_flags, ImGuiTableFlags_ScrollY);
        ImGui::CheckboxFlags("_Resizable", &table_flags, ImGuiTableFlags_Resizable);
        ImGui::CheckboxFlags("_NoBordersInBody", &table_flags, ImGuiTableFlags_NoBordersInBody);
        ImGui::CheckboxFlags("_HighlightHoveredColumn", &table_flags, ImGuiTableFlags_HighlightHoveredColumn);
        ImGui::SetNextItemWidth(ImGui::GetFontSize() * 8);
        ImGui::SliderInt("Frozen columns", &frozen_cols, 0, 2);
        ImGui::SetNextItemWidth(ImGui::GetFontSize() * 8);
        ImGui::SliderInt("Frozen rows", &frozen_rows, 0, 2);
        ImGui::CheckboxFlags("Disable header contributing to column width", &column_flags, ImGuiTableColumnFlags_NoHeaderWidth);
        if (ImGui::BeginTable("table_angled_headers", columns_count, table_flags, ImVec2(0.0f, TEXT_BASE_HEIGHT * 12)))
        {
            ImGui::TableSetupColumn(column_names[0], ImGuiTableColumnFlags_NoHide | ImGuiTableColumnFlags_NoReorder);
            for (int n = 1; n < columns_count; n++)
-                ImGui::TableSetupColumn(column_names[n], ImGuiTableColumnFlags_AngledHeader | ImGuiTableColumnFlags_WidthFixed);
+                ImGui::TableSetupColumn(column_names[n], column_flags);
            ImGui::TableSetupScrollFreeze(frozen_cols, frozen_rows);
            ImGui::TableAngledHeadersRow(); // Draw angled headers for all columns with the ImGuiTableColumnFlags_AngledHeader flag.
@ -6997,19 +7006,19 @@ struct ExampleAppConsole
    {
        ClearLog();
        for (int i = 0; i < History.Size; i++)
-            free(History[i]);
+            ImGui::MemFree(History[i]);
    }
    // Portable helpers
    static int   Stricmp(const char* s1, const char* s2)         { int d; while ((d = toupper(*s2) - toupper(*s1)) == 0 && *s1) { s1++; s2++; } return d; }
    static int   Strnicmp(const char* s1, const char* s2, int n) { int d = 0; while (n > 0 && (d = toupper(*s2) - toupper(*s1)) == 0 && *s1) { s1++; s2++; n--; } return d; }
-    static char* Strdup(const char* s)                           { IM_ASSERT(s); size_t len = strlen(s) + 1; void* buf = malloc(len); IM_ASSERT(buf); return (char*)memcpy(buf, (const void*)s, len); }
+    static char* Strdup(const char* s)                           { IM_ASSERT(s); size_t len = strlen(s) + 1; void* buf = ImGui::MemAlloc(len); IM_ASSERT(buf); return (char*)memcpy(buf, (const void*)s, len); }
    static void  Strtrim(char* s)                                { char* str_end = s + strlen(s); while (str_end > s && str_end[-1] == ' ') str_end--; *str_end = 0; }
    void    ClearLog()
    {
        for (int i = 0; i < Items.Size; i++)
-            free(Items[i]);
+            ImGui::MemFree(Items[i]);
        Items.clear();
    }
@ -7175,7 +7184,7 @@ struct ExampleAppConsole
        for (int i = History.Size - 1; i >= 0; i--)
            if (Stricmp(History[i], command_line) == 0)
            {
-                free(History[i]);
+                ImGui::MemFree(History[i]);
                History.erase(History.begin() + i);
                break;
            }
@ -8027,6 +8036,9 @@ static void ShowExampleAppCustomRendering(bool* p_open)
            const float rounding = sz / 5.0f;
            const int circle_segments = circle_segments_override ? circle_segments_override_v : 0;
            const int curve_segments = curve_segments_override ? curve_segments_override_v : 0;
            const ImVec2 cp3[3] = { ImVec2(0.0f, sz * 0.6f), ImVec2(sz * 0.5f, -sz * 0.4f), ImVec2(sz, sz) }; // Control points for curves
            const ImVec2 cp4[4] = { ImVec2(0.0f, 0.0f), ImVec2(sz * 1.3f, sz * 0.3f), ImVec2(sz - sz * 1.3f, sz - sz * 0.3f), ImVec2(sz, sz) };
            float x = p.x + 4.0f;
            float y = p.y + 4.0f;
            for (int n = 0; n < 2; n++)
@ -8045,17 +8057,23 @@ static void ShowExampleAppCustomRendering(bool* p_open)
                draw_list->AddLine(ImVec2(x, y), ImVec2(x, y + sz), col, th);                                       x += spacing;       // Vertical line (note: drawing a filled rectangle will be faster!)
                draw_list->AddLine(ImVec2(x, y), ImVec2(x + sz, y + sz), col, th);                                  x += sz + spacing;  // Diagonal line
                // Path
                draw_list->PathArcTo(ImVec2(x + sz*0.5f, y + sz*0.5f), sz*0.5f, 3.141592f, 3.141592f * -0.5f);
                draw_list->PathStroke(col, ImDrawFlags_None, th);
                x += sz + spacing;
                // Quadratic Bezier Curve (3 control points)
-                ImVec2 cp3[3] = { ImVec2(x, y + sz * 0.6f), ImVec2(x + sz * 0.5f, y - sz * 0.4f), ImVec2(x + sz, y + sz) };
+                draw_list->AddBezierQuadratic(ImVec2(x + cp3[0].x, y + cp3[0].y), ImVec2(x + cp3[1].x, y + cp3[1].y), ImVec2(x + cp3[2].x, y + cp3[2].y), col, th, curve_segments);
-                draw_list->AddBezierQuadratic(cp3[0], cp3[1], cp3[2], col, th, curve_segments); x += sz + spacing;
+                x += sz + spacing;
                // Cubic Bezier Curve (4 control points)
-                ImVec2 cp4[4] = { ImVec2(x, y), ImVec2(x + sz * 1.3f, y + sz * 0.3f), ImVec2(x + sz - sz * 1.3f, y + sz - sz * 0.3f), ImVec2(x + sz, y + sz) };
+                draw_list->AddBezierCubic(ImVec2(x + cp4[0].x, y + cp4[0].y), ImVec2(x + cp4[1].x, y + cp4[1].y), ImVec2(x + cp4[2].x, y + cp4[2].y), ImVec2(x + cp4[3].x, y + cp4[3].y), col, th, curve_segments);
                draw_list->AddBezierCubic(cp4[0], cp4[1], cp4[2], cp4[3], col, th, curve_segments);
                x = p.x + 4;
                y += sz + spacing;
            }
            // Filled shapes
            draw_list->AddNgonFilled(ImVec2(x + sz * 0.5f, y + sz * 0.5f), sz * 0.5f, col, ngon_sides);             x += sz + spacing;  // N-gon
            draw_list->AddCircleFilled(ImVec2(x + sz * 0.5f, y + sz * 0.5f), sz * 0.5f, col, circle_segments);      x += sz + spacing;  // Circle
            draw_list->AddEllipseFilled(ImVec2(x + sz * 0.5f, y + sz * 0.5f), sz * 0.5f, sz * 0.3f, col, -0.3f, circle_segments); x += sz + spacing;// Ellipse
@ -8067,9 +8085,27 @@ static void ShowExampleAppCustomRendering(bool* p_open)
            draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + sz, y + thickness), col);                             x += sz + spacing;  // Horizontal line (faster than AddLine, but only handle integer thickness)
            draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + thickness, y + sz), col);                             x += spacing * 2.0f;// Vertical line (faster than AddLine, but only handle integer thickness)
            draw_list->AddRectFilled(ImVec2(x, y), ImVec2(x + 1, y + 1), col);                                      x += sz;            // Pixel (faster than AddLine)
            // Path
            draw_list->PathArcTo(ImVec2(x + sz * 0.5f, y + sz * 0.5f), sz * 0.5f, 3.141592f * -0.5f, 3.141592f);
            draw_list->PathFillConvex(col);
            x += sz + spacing;
            // Quadratic Bezier Curve (3 control points)
            draw_list->PathLineTo(ImVec2(x + cp3[0].x, y + cp3[0].y));
            draw_list->PathBezierQuadraticCurveTo(ImVec2(x + cp3[1].x, y + cp3[1].y), ImVec2(x + cp3[2].x, y + cp3[2].y), curve_segments);
            draw_list->PathFillConvex(col);
            x += sz + spacing;
            // Cubic Bezier Curve (4 control points): this is concave so not drawing it yet
            //draw_list->PathLineTo(ImVec2(x + cp4[0].x, y + cp4[0].y));
            //draw_list->PathBezierCubicCurveTo(ImVec2(x + cp4[1].x, y + cp4[1].y), ImVec2(x + cp4[2].x, y + cp4[2].y), ImVec2(x + cp4[3].x, y + cp4[3].y), curve_segments);
            //draw_list->PathFillConvex(col);
            //x += sz + spacing;
            draw_list->AddRectFilledMultiColor(ImVec2(x, y), ImVec2(x + sz, y + sz), IM_COL32(0, 0, 0, 255), IM_COL32(255, 0, 0, 255), IM_COL32(255, 255, 0, 255), IM_COL32(0, 255, 0, 255));
-            ImGui::Dummy(ImVec2((sz + spacing) * 11.2f, (sz + spacing) * 3.0f));
+            ImGui::Dummy(ImVec2((sz + spacing) * 12.2f, (sz + spacing) * 3.0f));
            ImGui::PopItemWidth();
            ImGui::EndTabItem();
        }
--- a/dep/imgui/src/imgui_draw.cpp
+++ b/dep/imgui/src/imgui_draw.cpp
@ -1,4 +1,4 @@
-// dear imgui, v1.90.1
+// dear imgui, v1.90.4
 // (drawing and font code)
 /*
@ -641,7 +641,7 @@ void ImDrawList::PrimReserve(int idx_count, int vtx_count)
    _IdxWritePtr = IdxBuffer.Data + idx_buffer_old_size;
 }
-// Release the a number of reserved vertices/indices from the end of the last reservation made with PrimReserve().
+// Release the number of reserved vertices/indices from the end of the last reservation made with PrimReserve().
 void ImDrawList::PrimUnreserve(int idx_count, int vtx_count)
 {
    IM_ASSERT_PARANOID(idx_count >= 0 && vtx_count >= 0);
@ -3997,8 +3997,8 @@ void ImGui::RenderRectFilledRangeH(ImDrawList* draw_list, const ImRect& rect, Im
    }
    else
    {
-        draw_list->PathArcTo(ImVec2(x0, p1.y - rounding), rounding, IM_PI - arc0_e, IM_PI - arc0_b, 3); // BL
+        draw_list->PathArcTo(ImVec2(x0, p1.y - rounding), rounding, IM_PI - arc0_e, IM_PI - arc0_b); // BL
-        draw_list->PathArcTo(ImVec2(x0, p0.y + rounding), rounding, IM_PI + arc0_b, IM_PI + arc0_e, 3); // TR
+        draw_list->PathArcTo(ImVec2(x0, p0.y + rounding), rounding, IM_PI + arc0_b, IM_PI + arc0_e); // TR
    }
    if (p1.x > rect.Min.x + rounding)
    {
@ -4017,8 +4017,8 @@ void ImGui::RenderRectFilledRangeH(ImDrawList* draw_list, const ImRect& rect, Im
        }
        else
        {
-            draw_list->PathArcTo(ImVec2(x1, p0.y + rounding), rounding, -arc1_e, -arc1_b, 3); // TR
+            draw_list->PathArcTo(ImVec2(x1, p0.y + rounding), rounding, -arc1_e, -arc1_b); // TR
-            draw_list->PathArcTo(ImVec2(x1, p1.y - rounding), rounding, +arc1_b, +arc1_e, 3); // BR
+            draw_list->PathArcTo(ImVec2(x1, p1.y - rounding), rounding, +arc1_b, +arc1_e); // BR
        }
    }
    draw_list->PathFillConvex(col);
--- a/dep/imgui/src/imgui_freetype.cpp
+++ b/dep/imgui/src/imgui_freetype.cpp
@ -0,0 +1,950 @@
 // dear imgui: FreeType font builder (used as a replacement for the stb_truetype builder)
 // (code)
 // Get the latest version at https://github.com/ocornut/imgui/tree/master/misc/freetype
 // Original code by @vuhdo (Aleksei Skriabin). Improvements by @mikesart. Maintained since 2019 by @ocornut.
 // CHANGELOG
 // (minor and older changes stripped away, please see git history for details)
 //  2023/11/13: added support for ImFontConfig::RasterizationDensity field for scaling render density without scaling metrics.
 //  2023/08/01: added support for SVG fonts, enable by using '#define IMGUI_ENABLE_FREETYPE_LUNASVG' (#6591)
 //  2023/01/04: fixed a packing issue which in some occurrences would prevent large amount of glyphs from being packed correctly.
 //  2021/08/23: fixed crash when FT_Render_Glyph() fails to render a glyph and returns NULL.
 //  2021/03/05: added ImGuiFreeTypeBuilderFlags_Bitmap to load bitmap glyphs.
 //  2021/03/02: set 'atlas->TexPixelsUseColors = true' to help some backends with deciding of a prefered texture format.
 //  2021/01/28: added support for color-layered glyphs via ImGuiFreeTypeBuilderFlags_LoadColor (require Freetype 2.10+).
 //  2021/01/26: simplified integration by using '#define IMGUI_ENABLE_FREETYPE'. renamed ImGuiFreeType::XXX flags to ImGuiFreeTypeBuilderFlags_XXX for consistency with other API. removed ImGuiFreeType::BuildFontAtlas().
 //  2020/06/04: fix for rare case where FT_Get_Char_Index() succeed but FT_Load_Glyph() fails.
 //  2019/02/09: added RasterizerFlags::Monochrome flag to disable font anti-aliasing (combine with ::MonoHinting for best results!)
 //  2019/01/15: added support for imgui allocators + added FreeType only override function SetAllocatorFunctions().
 //  2019/01/10: re-factored to match big update in STB builder. fixed texture height waste. fixed redundant glyphs when merging. support for glyph padding.
 //  2018/06/08: added support for ImFontConfig::GlyphMinAdvanceX, GlyphMaxAdvanceX.
 //  2018/02/04: moved to main imgui repository (away from http://www.github.com/ocornut/imgui_club)
 //  2018/01/22: fix for addition of ImFontAtlas::TexUvscale member.
 //  2017/10/22: minor inconsequential change to match change in master (removed an unnecessary statement).
 //  2017/09/26: fixes for imgui internal changes.
 //  2017/08/26: cleanup, optimizations, support for ImFontConfig::RasterizerFlags, ImFontConfig::RasterizerMultiply.
 //  2017/08/16: imported from https://github.com/Vuhdo/imgui_freetype into http://www.github.com/ocornut/imgui_club, updated for latest changes in ImFontAtlas, minor tweaks.
 // About Gamma Correct Blending:
 // - FreeType assumes blending in linear space rather than gamma space.
 // - See https://www.freetype.org/freetype2/docs/reference/ft2-base_interface.html#FT_Render_Glyph
 // - For correct results you need to be using sRGB and convert to linear space in the pixel shader output.
 // - The default dear imgui styles will be impacted by this change (alpha values will need tweaking).
 // FIXME: cfg.OversampleH, OversampleV are not supported (but perhaps not so necessary with this rasterizer).
 #include "imgui.h"
 #ifndef IMGUI_DISABLE
 #include "imgui_freetype.h"
 #include "imgui_internal.h"     // ImMin,ImMax,ImFontAtlasBuild*,
 #include <stdint.h>
 #include <ft2build.h>
 #include FT_FREETYPE_H          // <freetype/freetype.h>
 #include FT_MODULE_H            // <freetype/ftmodapi.h>
 #include FT_GLYPH_H             // <freetype/ftglyph.h>
 #include FT_SYNTHESIS_H         // <freetype/ftsynth.h>
 #ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
 #include FT_OTSVG_H             // <freetype/otsvg.h>
 #include FT_BBOX_H              // <freetype/ftbbox.h>
 #include <lunasvg.h>
 #if !((FREETYPE_MAJOR >= 2) && (FREETYPE_MINOR >= 12))
 #error IMGUI_ENABLE_FREETYPE_LUNASVG requires FreeType version >= 2.12
 #endif
 #endif
 #ifdef _MSC_VER
 #pragma warning (push)
 #pragma warning (disable: 4505)     // unreferenced local function has been removed (stb stuff)
 #pragma warning (disable: 26812)    // [Static Analyzer] The enum type 'xxx' is unscoped. Prefer 'enum class' over 'enum' (Enum.3).
 #endif
 #ifdef __GNUC__
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wpragmas"                  // warning: unknown option after '#pragma GCC diagnostic' kind
 #pragma GCC diagnostic ignored "-Wunused-function"          // warning: 'xxxx' defined but not used
 #ifndef __clang__
 #pragma GCC diagnostic ignored "-Wsubobject-linkage"        // warning: 'xxxx' has a field 'xxxx' whose type uses the anonymous namespace
 #endif
 #endif
 //-------------------------------------------------------------------------
 // Data
 //-------------------------------------------------------------------------
 // Default memory allocators
 static void* ImGuiFreeTypeDefaultAllocFunc(size_t size, void* user_data) { IM_UNUSED(user_data); return IM_ALLOC(size); }
 static void  ImGuiFreeTypeDefaultFreeFunc(void* ptr, void* user_data) { IM_UNUSED(user_data); IM_FREE(ptr); }
 // Current memory allocators
 static void* (*GImGuiFreeTypeAllocFunc)(size_t size, void* user_data) = ImGuiFreeTypeDefaultAllocFunc;
 static void  (*GImGuiFreeTypeFreeFunc)(void* ptr, void* user_data) = ImGuiFreeTypeDefaultFreeFunc;
 static void* GImGuiFreeTypeAllocatorUserData = nullptr;
 // Lunasvg support
 #ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
 static FT_Error ImGuiLunasvgPortInit(FT_Pointer* state);
 static void     ImGuiLunasvgPortFree(FT_Pointer* state);
 static FT_Error ImGuiLunasvgPortRender(FT_GlyphSlot slot, FT_Pointer* _state);
 static FT_Error ImGuiLunasvgPortPresetSlot(FT_GlyphSlot slot, FT_Bool cache, FT_Pointer* _state);
 #endif
 //-------------------------------------------------------------------------
 // Code
 //-------------------------------------------------------------------------
 namespace
 {
    // Glyph metrics:
    // --------------
    //
    //                       xmin                     xmax
    //                        |                         |
    //                        |<-------- width -------->|
    //                        |                         |
    //              |         +-------------------------+----------------- ymax
    //              |         |    ggggggggg   ggggg    |     ^        ^
    //              |         |   g:::::::::ggg::::g    |     |        |
    //              |         |  g:::::::::::::::::g    |     |        |
    //              |         | g::::::ggggg::::::gg    |     |        |
    //              |         | g:::::g     g:::::g     |     |        |
    //    offsetX  -|-------->| g:::::g     g:::::g     |  offsetY     |
    //              |         | g:::::g     g:::::g     |     |        |
    //              |         | g::::::g    g:::::g     |     |        |
    //              |         | g:::::::ggggg:::::g     |     |        |
    //              |         |  g::::::::::::::::g     |     |      height
    //              |         |   gg::::::::::::::g     |     |        |
    //  baseline ---*---------|---- gggggggg::::::g-----*--------      |
    //            / |         |             g:::::g     |              |
    //     origin   |         | gggggg      g:::::g     |              |
    //              |         | g:::::gg   gg:::::g     |              |
    //              |         |  g::::::ggg:::::::g     |              |
    //              |         |   gg:::::::::::::g      |              |
    //              |         |     ggg::::::ggg        |              |
    //              |         |         gggggg          |              v
    //              |         +-------------------------+----------------- ymin
    //              |                                   |
    //              |------------- advanceX ----------->|
    // A structure that describe a glyph.
    struct GlyphInfo
    {
        int         Width;              // Glyph's width in pixels.
        int         Height;             // Glyph's height in pixels.
        FT_Int      OffsetX;            // The distance from the origin ("pen position") to the left of the glyph.
        FT_Int      OffsetY;            // The distance from the origin to the top of the glyph. This is usually a value < 0.
        float       AdvanceX;           // The distance from the origin to the origin of the next glyph. This is usually a value > 0.
        bool        IsColored;          // The glyph is colored
    };
    // Font parameters and metrics.
    struct FontInfo
    {
        uint32_t    PixelHeight;        // Size this font was generated with.
        float       Ascender;           // The pixel extents above the baseline in pixels (typically positive).
        float       Descender;          // The extents below the baseline in pixels (typically negative).
        float       LineSpacing;        // The baseline-to-baseline distance. Note that it usually is larger than the sum of the ascender and descender taken as absolute values. There is also no guarantee that no glyphs extend above or below subsequent baselines when using this distance. Think of it as a value the designer of the font finds appropriate.
        float       LineGap;            // The spacing in pixels between one row's descent and the next row's ascent.
        float       MaxAdvanceWidth;    // This field gives the maximum horizontal cursor advance for all glyphs in the font.
    };
    // FreeType glyph rasterizer.
    // NB: No ctor/dtor, explicitly call Init()/Shutdown()
    struct FreeTypeFont
    {
        bool                    InitFont(FT_Library ft_library, const ImFontConfig& cfg, unsigned int extra_user_flags); // Initialize from an external data buffer. Doesn't copy data, and you must ensure it stays valid up to this object lifetime.
        void                    CloseFont();
        void                    SetPixelHeight(int pixel_height); // Change font pixel size. All following calls to RasterizeGlyph() will use this size
        const FT_Glyph_Metrics* LoadGlyph(uint32_t in_codepoint);
        const FT_Bitmap*        RenderGlyphAndGetInfo(GlyphInfo* out_glyph_info);
        void                    BlitGlyph(const FT_Bitmap* ft_bitmap, uint32_t* dst, uint32_t dst_pitch, unsigned char* multiply_table = nullptr);
        ~FreeTypeFont()         { CloseFont(); }
        // [Internals]
        FontInfo        Info;               // Font descriptor of the current font.
        FT_Face         Face;
        unsigned int    UserFlags;          // = ImFontConfig::RasterizerFlags
        FT_Int32        LoadFlags;
        FT_Render_Mode  RenderMode;
        float           RasterizationDensity;
        float           InvRasterizationDensity;
    };
    // From SDL_ttf: Handy routines for converting from fixed point
    #define FT_CEIL(X)  (((X + 63) & -64) / 64)
    bool FreeTypeFont::InitFont(FT_Library ft_library, const ImFontConfig& cfg, unsigned int extra_font_builder_flags)
    {
        FT_Error error = FT_New_Memory_Face(ft_library, (uint8_t*)cfg.FontData, (uint32_t)cfg.FontDataSize, (uint32_t)cfg.FontNo, &Face);
        if (error != 0)
            return false;
        error = FT_Select_Charmap(Face, FT_ENCODING_UNICODE);
        if (error != 0)
            return false;
        // Convert to FreeType flags (NB: Bold and Oblique are processed separately)
        UserFlags = cfg.FontBuilderFlags | extra_font_builder_flags;
        LoadFlags = 0;
        if ((UserFlags & ImGuiFreeTypeBuilderFlags_Bitmap) == 0)
            LoadFlags |= FT_LOAD_NO_BITMAP;
        if (UserFlags & ImGuiFreeTypeBuilderFlags_NoHinting)
            LoadFlags |= FT_LOAD_NO_HINTING;
        if (UserFlags & ImGuiFreeTypeBuilderFlags_NoAutoHint)
            LoadFlags |= FT_LOAD_NO_AUTOHINT;
        if (UserFlags & ImGuiFreeTypeBuilderFlags_ForceAutoHint)
            LoadFlags |= FT_LOAD_FORCE_AUTOHINT;
        if (UserFlags & ImGuiFreeTypeBuilderFlags_LightHinting)
            LoadFlags |= FT_LOAD_TARGET_LIGHT;
        else if (UserFlags & ImGuiFreeTypeBuilderFlags_MonoHinting)
            LoadFlags |= FT_LOAD_TARGET_MONO;
        else
            LoadFlags |= FT_LOAD_TARGET_NORMAL;
        if (UserFlags & ImGuiFreeTypeBuilderFlags_Monochrome)
            RenderMode = FT_RENDER_MODE_MONO;
        else
            RenderMode = FT_RENDER_MODE_NORMAL;
        if (UserFlags & ImGuiFreeTypeBuilderFlags_LoadColor)
            LoadFlags |= FT_LOAD_COLOR;
        RasterizationDensity = cfg.RasterizerDensity;
        InvRasterizationDensity = 1.0f / RasterizationDensity;
        memset(&Info, 0, sizeof(Info));
        SetPixelHeight((uint32_t)cfg.SizePixels);
        return true;
    }
    void FreeTypeFont::CloseFont()
    {
        if (Face)
        {
            FT_Done_Face(Face);
            Face = nullptr;
        }
    }
    void FreeTypeFont::SetPixelHeight(int pixel_height)
    {
        // Vuhdo: I'm not sure how to deal with font sizes properly. As far as I understand, currently ImGui assumes that the 'pixel_height'
        // is a maximum height of an any given glyph, i.e. it's the sum of font's ascender and descender. Seems strange to me.
        // NB: FT_Set_Pixel_Sizes() doesn't seem to get us the same result.
        FT_Size_RequestRec req;
        req.type = (UserFlags & ImGuiFreeTypeBuilderFlags_Bitmap) ? FT_SIZE_REQUEST_TYPE_NOMINAL : FT_SIZE_REQUEST_TYPE_REAL_DIM;
        req.width = 0;
        req.height = (uint32_t)(pixel_height * 64 * RasterizationDensity);
        req.horiResolution = 0;
        req.vertResolution = 0;
        FT_Request_Size(Face, &req);
        // Update font info
        FT_Size_Metrics metrics = Face->size->metrics;
        Info.PixelHeight = (uint32_t)(pixel_height * InvRasterizationDensity);
        Info.Ascender = (float)FT_CEIL(metrics.ascender) * InvRasterizationDensity;
        Info.Descender = (float)FT_CEIL(metrics.descender) * InvRasterizationDensity;
        Info.LineSpacing = (float)FT_CEIL(metrics.height) * InvRasterizationDensity;
        Info.LineGap = (float)FT_CEIL(metrics.height - metrics.ascender + metrics.descender) * InvRasterizationDensity;
        Info.MaxAdvanceWidth = (float)FT_CEIL(metrics.max_advance) * InvRasterizationDensity;
    }
    const FT_Glyph_Metrics* FreeTypeFont::LoadGlyph(uint32_t codepoint)
    {
        uint32_t glyph_index = FT_Get_Char_Index(Face, codepoint);
        if (glyph_index == 0)
            return nullptr;
 		// If this crash for you: FreeType 2.11.0 has a crash bug on some bitmap/colored fonts.
 		// - https://gitlab.freedesktop.org/freetype/freetype/-/issues/1076
 		// - https://github.com/ocornut/imgui/issues/4567
 		// - https://github.com/ocornut/imgui/issues/4566
 		// You can use FreeType 2.10, or the patched version of 2.11.0 in VcPkg, or probably any upcoming FreeType version.
        FT_Error error = FT_Load_Glyph(Face, glyph_index, LoadFlags);
        if (error)
            return nullptr;
        // Need an outline for this to work
        FT_GlyphSlot slot = Face->glyph;
 #ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
        IM_ASSERT(slot->format == FT_GLYPH_FORMAT_OUTLINE || slot->format == FT_GLYPH_FORMAT_BITMAP || slot->format == FT_GLYPH_FORMAT_SVG);
 #else
 #if ((FREETYPE_MAJOR >= 2) && (FREETYPE_MINOR >= 12))
        IM_ASSERT(slot->format != FT_GLYPH_FORMAT_SVG && "The font contains SVG glyphs, you'll need to enable IMGUI_ENABLE_FREETYPE_LUNASVG in imconfig.h and install required libraries in order to use this font");
 #endif
        IM_ASSERT(slot->format == FT_GLYPH_FORMAT_OUTLINE || slot->format == FT_GLYPH_FORMAT_BITMAP);
 #endif // IMGUI_ENABLE_FREETYPE_LUNASVG
        // Apply convenience transform (this is not picking from real "Bold"/"Italic" fonts! Merely applying FreeType helper transform. Oblique == Slanting)
        if (UserFlags & ImGuiFreeTypeBuilderFlags_Bold)
            FT_GlyphSlot_Embolden(slot);
        if (UserFlags & ImGuiFreeTypeBuilderFlags_Oblique)
        {
            FT_GlyphSlot_Oblique(slot);
            //FT_BBox bbox;
            //FT_Outline_Get_BBox(&slot->outline, &bbox);
            //slot->metrics.width = bbox.xMax - bbox.xMin;
            //slot->metrics.height = bbox.yMax - bbox.yMin;
        }
        return &slot->metrics;
    }
    const FT_Bitmap* FreeTypeFont::RenderGlyphAndGetInfo(GlyphInfo* out_glyph_info)
    {
        FT_GlyphSlot slot = Face->glyph;
        FT_Error error = FT_Render_Glyph(slot, RenderMode);
        if (error != 0)
            return nullptr;
        FT_Bitmap* ft_bitmap = &Face->glyph->bitmap;
        out_glyph_info->Width = (int)ft_bitmap->width;
        out_glyph_info->Height = (int)ft_bitmap->rows;
        out_glyph_info->OffsetX = Face->glyph->bitmap_left;
        out_glyph_info->OffsetY = -Face->glyph->bitmap_top;
        out_glyph_info->AdvanceX = (float)FT_CEIL(slot->advance.x);
        out_glyph_info->IsColored = (ft_bitmap->pixel_mode == FT_PIXEL_MODE_BGRA);
        return ft_bitmap;
    }
    void FreeTypeFont::BlitGlyph(const FT_Bitmap* ft_bitmap, uint32_t* dst, uint32_t dst_pitch, unsigned char* multiply_table)
    {
        IM_ASSERT(ft_bitmap != nullptr);
        const uint32_t w = ft_bitmap->width;
        const uint32_t h = ft_bitmap->rows;
        const uint8_t* src = ft_bitmap->buffer;
        const uint32_t src_pitch = ft_bitmap->pitch;
        switch (ft_bitmap->pixel_mode)
        {
        case FT_PIXEL_MODE_GRAY: // Grayscale image, 1 byte per pixel.
            {
                if (multiply_table == nullptr)
                {
                    for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
                        for (uint32_t x = 0; x < w; x++)
                            dst[x] = IM_COL32(255, 255, 255, src[x]);
                }
                else
                {
                    for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
                        for (uint32_t x = 0; x < w; x++)
                            dst[x] = IM_COL32(255, 255, 255, multiply_table[src[x]]);
                }
                break;
            }
        case FT_PIXEL_MODE_MONO: // Monochrome image, 1 bit per pixel. The bits in each byte are ordered from MSB to LSB.
            {
                uint8_t color0 = multiply_table ? multiply_table[0] : 0;
                uint8_t color1 = multiply_table ? multiply_table[255] : 255;
                for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
                {
                    uint8_t bits = 0;
                    const uint8_t* bits_ptr = src;
                    for (uint32_t x = 0; x < w; x++, bits <<= 1)
                    {
                        if ((x & 7) == 0)
                            bits = *bits_ptr++;
                        dst[x] = IM_COL32(255, 255, 255, (bits & 0x80) ? color1 : color0);
                    }
                }
                break;
            }
        case FT_PIXEL_MODE_BGRA:
            {
                // FIXME: Converting pre-multiplied alpha to straight. Doesn't smell good.
                #define DE_MULTIPLY(color, alpha) (ImU32)(255.0f * (float)color / (float)alpha + 0.5f)
                if (multiply_table == nullptr)
                {
                    for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
                        for (uint32_t x = 0; x < w; x++)
                        {
                            uint8_t r = src[x * 4 + 2], g = src[x * 4 + 1], b = src[x * 4], a = src[x * 4 + 3];
                            dst[x] = IM_COL32(DE_MULTIPLY(r, a), DE_MULTIPLY(g, a), DE_MULTIPLY(b, a), a);
                        }
                }
                else
                {
                    for (uint32_t y = 0; y < h; y++, src += src_pitch, dst += dst_pitch)
                    {
                        for (uint32_t x = 0; x < w; x++)
                        {
                            uint8_t r = src[x * 4 + 2], g = src[x * 4 + 1], b = src[x * 4], a = src[x * 4 + 3];
                            dst[x] = IM_COL32(multiply_table[DE_MULTIPLY(r, a)], multiply_table[DE_MULTIPLY(g, a)], multiply_table[DE_MULTIPLY(b, a)], multiply_table[a]);
                        }
                    }
                }
                #undef DE_MULTIPLY
                break;
            }
        default:
            IM_ASSERT(0 && "FreeTypeFont::BlitGlyph(): Unknown bitmap pixel mode!");
        }
    }
 } // namespace
 #ifndef STB_RECT_PACK_IMPLEMENTATION                        // in case the user already have an implementation in the _same_ compilation unit (e.g. unity builds)
 #ifndef IMGUI_DISABLE_STB_RECT_PACK_IMPLEMENTATION
 #define STBRP_ASSERT(x)     do { IM_ASSERT(x); } while (0)
 #define STBRP_STATIC
 #define STB_RECT_PACK_IMPLEMENTATION
 #endif
 #ifdef IMGUI_STB_RECT_PACK_FILENAME
 #include IMGUI_STB_RECT_PACK_FILENAME
 #else
 #include "imstb_rectpack.h"
 #endif
 #endif
 struct ImFontBuildSrcGlyphFT
 {
    GlyphInfo           Info;
    uint32_t            Codepoint;
    unsigned int*       BitmapData;         // Point within one of the dst_tmp_bitmap_buffers[] array
    ImFontBuildSrcGlyphFT() { memset((void*)this, 0, sizeof(*this)); }
 };
 struct ImFontBuildSrcDataFT
 {
    FreeTypeFont        Font;
    stbrp_rect*         Rects;              // Rectangle to pack. We first fill in their size and the packer will give us their position.
    const ImWchar*      SrcRanges;          // Ranges as requested by user (user is allowed to request too much, e.g. 0x0020..0xFFFF)
    int                 DstIndex;           // Index into atlas->Fonts[] and dst_tmp_array[]
    int                 GlyphsHighest;      // Highest requested codepoint
    int                 GlyphsCount;        // Glyph count (excluding missing glyphs and glyphs already set by an earlier source font)
    ImBitVector         GlyphsSet;          // Glyph bit map (random access, 1-bit per codepoint. This will be a maximum of 8KB)
    ImVector<ImFontBuildSrcGlyphFT>   GlyphsList;
 };
 // Temporary data for one destination ImFont* (multiple source fonts can be merged into one destination ImFont)
 struct ImFontBuildDstDataFT
 {
    int                 SrcCount;           // Number of source fonts targeting this destination font.
    int                 GlyphsHighest;
    int                 GlyphsCount;
    ImBitVector         GlyphsSet;          // This is used to resolve collision when multiple sources are merged into a same destination font.
 };
 bool ImFontAtlasBuildWithFreeTypeEx(FT_Library ft_library, ImFontAtlas* atlas, unsigned int extra_flags)
 {
    IM_ASSERT(atlas->ConfigData.Size > 0);
    ImFontAtlasBuildInit(atlas);
    // Clear atlas
    atlas->TexID = 0;
    atlas->TexWidth = atlas->TexHeight = 0;
    atlas->TexUvScale = ImVec2(0.0f, 0.0f);
    atlas->TexUvWhitePixel = ImVec2(0.0f, 0.0f);
    atlas->ClearTexData();
    // Temporary storage for building
    bool src_load_color = false;
    ImVector<ImFontBuildSrcDataFT> src_tmp_array;
    ImVector<ImFontBuildDstDataFT> dst_tmp_array;
    src_tmp_array.resize(atlas->ConfigData.Size);
    dst_tmp_array.resize(atlas->Fonts.Size);
    memset((void*)src_tmp_array.Data, 0, (size_t)src_tmp_array.size_in_bytes());
    memset((void*)dst_tmp_array.Data, 0, (size_t)dst_tmp_array.size_in_bytes());
    // 1. Initialize font loading structure, check font data validity
    for (int src_i = 0; src_i < atlas->ConfigData.Size; src_i++)
    {
        ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
        ImFontConfig& cfg = atlas->ConfigData[src_i];
        FreeTypeFont& font_face = src_tmp.Font;
        IM_ASSERT(cfg.DstFont && (!cfg.DstFont->IsLoaded() || cfg.DstFont->ContainerAtlas == atlas));
        // Find index from cfg.DstFont (we allow the user to set cfg.DstFont. Also it makes casual debugging nicer than when storing indices)
        src_tmp.DstIndex = -1;
        for (int output_i = 0; output_i < atlas->Fonts.Size && src_tmp.DstIndex == -1; output_i++)
            if (cfg.DstFont == atlas->Fonts[output_i])
                src_tmp.DstIndex = output_i;
        IM_ASSERT(src_tmp.DstIndex != -1); // cfg.DstFont not pointing within atlas->Fonts[] array?
        if (src_tmp.DstIndex == -1)
            return false;
        // Load font
        if (!font_face.InitFont(ft_library, cfg, extra_flags))
            return false;
        // Measure highest codepoints
        src_load_color |= (cfg.FontBuilderFlags & ImGuiFreeTypeBuilderFlags_LoadColor) != 0;
        ImFontBuildDstDataFT& dst_tmp = dst_tmp_array[src_tmp.DstIndex];
        src_tmp.SrcRanges = cfg.GlyphRanges ? cfg.GlyphRanges : atlas->GetGlyphRangesDefault();
        for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
        {
            // Check for valid range. This may also help detect *some* dangling pointers, because a common
            // user error is to setup ImFontConfig::GlyphRanges with a pointer to data that isn't persistent.
            IM_ASSERT(src_range[0] <= src_range[1]);
            src_tmp.GlyphsHighest = ImMax(src_tmp.GlyphsHighest, (int)src_range[1]);
        }
        dst_tmp.SrcCount++;
        dst_tmp.GlyphsHighest = ImMax(dst_tmp.GlyphsHighest, src_tmp.GlyphsHighest);
    }
    // 2. For every requested codepoint, check for their presence in the font data, and handle redundancy or overlaps between source fonts to avoid unused glyphs.
    int total_glyphs_count = 0;
    for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
    {
        ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
        ImFontBuildDstDataFT& dst_tmp = dst_tmp_array[src_tmp.DstIndex];
        src_tmp.GlyphsSet.Create(src_tmp.GlyphsHighest + 1);
        if (dst_tmp.GlyphsSet.Storage.empty())
            dst_tmp.GlyphsSet.Create(dst_tmp.GlyphsHighest + 1);
        for (const ImWchar* src_range = src_tmp.SrcRanges; src_range[0] && src_range[1]; src_range += 2)
            for (int codepoint = src_range[0]; codepoint <= (int)src_range[1]; codepoint++)
            {
                if (dst_tmp.GlyphsSet.TestBit(codepoint))    // Don't overwrite existing glyphs. We could make this an option (e.g. MergeOverwrite)
                    continue;
                uint32_t glyph_index = FT_Get_Char_Index(src_tmp.Font.Face, codepoint); // It is actually in the font? (FIXME-OPT: We are not storing the glyph_index..)
                if (glyph_index == 0)
                    continue;
                // Add to avail set/counters
                src_tmp.GlyphsCount++;
                dst_tmp.GlyphsCount++;
                src_tmp.GlyphsSet.SetBit(codepoint);
                dst_tmp.GlyphsSet.SetBit(codepoint);
                total_glyphs_count++;
            }
    }
    // 3. Unpack our bit map into a flat list (we now have all the Unicode points that we know are requested _and_ available _and_ not overlapping another)
    for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
    {
        ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
        src_tmp.GlyphsList.reserve(src_tmp.GlyphsCount);
        IM_ASSERT(sizeof(src_tmp.GlyphsSet.Storage.Data[0]) == sizeof(ImU32));
        const ImU32* it_begin = src_tmp.GlyphsSet.Storage.begin();
        const ImU32* it_end = src_tmp.GlyphsSet.Storage.end();
        for (const ImU32* it = it_begin; it < it_end; it++)
            if (ImU32 entries_32 = *it)
                for (ImU32 bit_n = 0; bit_n < 32; bit_n++)
                    if (entries_32 & ((ImU32)1 << bit_n))
                    {
                        ImFontBuildSrcGlyphFT src_glyph;
                        src_glyph.Codepoint = (ImWchar)(((it - it_begin) << 5) + bit_n);
                        //src_glyph.GlyphIndex = 0; // FIXME-OPT: We had this info in the previous step and lost it..
                        src_tmp.GlyphsList.push_back(src_glyph);
                    }
        src_tmp.GlyphsSet.Clear();
        IM_ASSERT(src_tmp.GlyphsList.Size == src_tmp.GlyphsCount);
    }
    for (int dst_i = 0; dst_i < dst_tmp_array.Size; dst_i++)
        dst_tmp_array[dst_i].GlyphsSet.Clear();
    dst_tmp_array.clear();
    // Allocate packing character data and flag packed characters buffer as non-packed (x0=y0=x1=y1=0)
    // (We technically don't need to zero-clear buf_rects, but let's do it for the sake of sanity)
    ImVector<stbrp_rect> buf_rects;
    buf_rects.resize(total_glyphs_count);
    memset(buf_rects.Data, 0, (size_t)buf_rects.size_in_bytes());
    // Allocate temporary rasterization data buffers.
    // We could not find a way to retrieve accurate glyph size without rendering them.
    // (e.g. slot->metrics->width not always matching bitmap->width, especially considering the Oblique transform)
    // We allocate in chunks of 256 KB to not waste too much extra memory ahead. Hopefully users of FreeType won't mind the temporary allocations.
    const int BITMAP_BUFFERS_CHUNK_SIZE = 256 * 1024;
    int buf_bitmap_current_used_bytes = 0;
    ImVector<unsigned char*> buf_bitmap_buffers;
    buf_bitmap_buffers.push_back((unsigned char*)IM_ALLOC(BITMAP_BUFFERS_CHUNK_SIZE));
    // 4. Gather glyphs sizes so we can pack them in our virtual canvas.
    // 8. Render/rasterize font characters into the texture
    int total_surface = 0;
    int buf_rects_out_n = 0;
    for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
    {
        ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
        ImFontConfig& cfg = atlas->ConfigData[src_i];
        if (src_tmp.GlyphsCount == 0)
            continue;
        src_tmp.Rects = &buf_rects[buf_rects_out_n];
        buf_rects_out_n += src_tmp.GlyphsCount;
        // Compute multiply table if requested
        const bool multiply_enabled = (cfg.RasterizerMultiply != 1.0f);
        unsigned char multiply_table[256];
        if (multiply_enabled)
            ImFontAtlasBuildMultiplyCalcLookupTable(multiply_table, cfg.RasterizerMultiply);
        // Gather the sizes of all rectangles we will need to pack
        const int padding = atlas->TexGlyphPadding;
        for (int glyph_i = 0; glyph_i < src_tmp.GlyphsList.Size; glyph_i++)
        {
            ImFontBuildSrcGlyphFT& src_glyph = src_tmp.GlyphsList[glyph_i];
            const FT_Glyph_Metrics* metrics = src_tmp.Font.LoadGlyph(src_glyph.Codepoint);
            if (metrics == nullptr)
                continue;
            // Render glyph into a bitmap (currently held by FreeType)
            const FT_Bitmap* ft_bitmap = src_tmp.Font.RenderGlyphAndGetInfo(&src_glyph.Info);
            if (ft_bitmap == nullptr)
                continue;
            // Allocate new temporary chunk if needed
            const int bitmap_size_in_bytes = src_glyph.Info.Width * src_glyph.Info.Height * 4;
            if (buf_bitmap_current_used_bytes + bitmap_size_in_bytes > BITMAP_BUFFERS_CHUNK_SIZE)
            {
                buf_bitmap_current_used_bytes = 0;
                buf_bitmap_buffers.push_back((unsigned char*)IM_ALLOC(BITMAP_BUFFERS_CHUNK_SIZE));
            }
            IM_ASSERT(buf_bitmap_current_used_bytes + bitmap_size_in_bytes <= BITMAP_BUFFERS_CHUNK_SIZE); // We could probably allocate custom-sized buffer instead.
            // Blit rasterized pixels to our temporary buffer and keep a pointer to it.
            src_glyph.BitmapData = (unsigned int*)(buf_bitmap_buffers.back() + buf_bitmap_current_used_bytes);
            buf_bitmap_current_used_bytes += bitmap_size_in_bytes;
            src_tmp.Font.BlitGlyph(ft_bitmap, src_glyph.BitmapData, src_glyph.Info.Width, multiply_enabled ? multiply_table : nullptr);
            src_tmp.Rects[glyph_i].w = (stbrp_coord)(src_glyph.Info.Width + padding);
            src_tmp.Rects[glyph_i].h = (stbrp_coord)(src_glyph.Info.Height + padding);
            total_surface += src_tmp.Rects[glyph_i].w * src_tmp.Rects[glyph_i].h;
        }
    }
    // We need a width for the skyline algorithm, any width!
    // The exact width doesn't really matter much, but some API/GPU have texture size limitations and increasing width can decrease height.
    // User can override TexDesiredWidth and TexGlyphPadding if they wish, otherwise we use a simple heuristic to select the width based on expected surface.
    const int surface_sqrt = (int)ImSqrt((float)total_surface) + 1;
    atlas->TexHeight = 0;
    if (atlas->TexDesiredWidth > 0)
        atlas->TexWidth = atlas->TexDesiredWidth;
    else
        atlas->TexWidth = (surface_sqrt >= 4096 * 0.7f) ? 4096 : (surface_sqrt >= 2048 * 0.7f) ? 2048 : (surface_sqrt >= 1024 * 0.7f) ? 1024 : 512;
    // 5. Start packing
    // Pack our extra data rectangles first, so it will be on the upper-left corner of our texture (UV will have small values).
    const int TEX_HEIGHT_MAX = 1024 * 32;
    const int num_nodes_for_packing_algorithm = atlas->TexWidth - atlas->TexGlyphPadding;
    ImVector<stbrp_node> pack_nodes;
    pack_nodes.resize(num_nodes_for_packing_algorithm);
    stbrp_context pack_context;
    stbrp_init_target(&pack_context, atlas->TexWidth - atlas->TexGlyphPadding, TEX_HEIGHT_MAX - atlas->TexGlyphPadding, pack_nodes.Data, pack_nodes.Size);
    ImFontAtlasBuildPackCustomRects(atlas, &pack_context);
    // 6. Pack each source font. No rendering yet, we are working with rectangles in an infinitely tall texture at this point.
    for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
    {
        ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
        if (src_tmp.GlyphsCount == 0)
            continue;
        stbrp_pack_rects(&pack_context, src_tmp.Rects, src_tmp.GlyphsCount);
        // Extend texture height and mark missing glyphs as non-packed so we won't render them.
        // FIXME: We are not handling packing failure here (would happen if we got off TEX_HEIGHT_MAX or if a single if larger than TexWidth?)
        for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)
            if (src_tmp.Rects[glyph_i].was_packed)
                atlas->TexHeight = ImMax(atlas->TexHeight, src_tmp.Rects[glyph_i].y + src_tmp.Rects[glyph_i].h);
    }
    // 7. Allocate texture
    atlas->TexHeight = (atlas->Flags & ImFontAtlasFlags_NoPowerOfTwoHeight) ? (atlas->TexHeight + 1) : ImUpperPowerOfTwo(atlas->TexHeight);
    atlas->TexUvScale = ImVec2(1.0f / atlas->TexWidth, 1.0f / atlas->TexHeight);
    if (src_load_color)
    {
        size_t tex_size = (size_t)atlas->TexWidth * atlas->TexHeight * 4;
        atlas->TexPixelsRGBA32 = (unsigned int*)IM_ALLOC(tex_size);
        memset(atlas->TexPixelsRGBA32, 0, tex_size);
    }
    else
    {
        size_t tex_size = (size_t)atlas->TexWidth * atlas->TexHeight * 1;
        atlas->TexPixelsAlpha8 = (unsigned char*)IM_ALLOC(tex_size);
        memset(atlas->TexPixelsAlpha8, 0, tex_size);
    }
    // 8. Copy rasterized font characters back into the main texture
    // 9. Setup ImFont and glyphs for runtime
    bool tex_use_colors = false;
    for (int src_i = 0; src_i < src_tmp_array.Size; src_i++)
    {
        ImFontBuildSrcDataFT& src_tmp = src_tmp_array[src_i];
        if (src_tmp.GlyphsCount == 0)
            continue;
        // When merging fonts with MergeMode=true:
        // - We can have multiple input fonts writing into a same destination font.
        // - dst_font->ConfigData is != from cfg which is our source configuration.
        ImFontConfig& cfg = atlas->ConfigData[src_i];
        ImFont* dst_font = cfg.DstFont;
        const float ascent = src_tmp.Font.Info.Ascender;
        const float descent = src_tmp.Font.Info.Descender;
        ImFontAtlasBuildSetupFont(atlas, dst_font, &cfg, ascent, descent);
        const float font_off_x = cfg.GlyphOffset.x;
        const float font_off_y = cfg.GlyphOffset.y + IM_ROUND(dst_font->Ascent);
        const int padding = atlas->TexGlyphPadding;
        for (int glyph_i = 0; glyph_i < src_tmp.GlyphsCount; glyph_i++)
        {
            ImFontBuildSrcGlyphFT& src_glyph = src_tmp.GlyphsList[glyph_i];
            stbrp_rect& pack_rect = src_tmp.Rects[glyph_i];
            IM_ASSERT(pack_rect.was_packed);
            if (pack_rect.w == 0 && pack_rect.h == 0)
                continue;
            GlyphInfo& info = src_glyph.Info;
            IM_ASSERT(info.Width + padding <= pack_rect.w);
            IM_ASSERT(info.Height + padding <= pack_rect.h);
            const int tx = pack_rect.x + padding;
            const int ty = pack_rect.y + padding;
            // Register glyph
            float x0 = info.OffsetX * src_tmp.Font.InvRasterizationDensity + font_off_x;
            float y0 = info.OffsetY * src_tmp.Font.InvRasterizationDensity + font_off_y;
            float x1 = x0 + info.Width * src_tmp.Font.InvRasterizationDensity;
            float y1 = y0 + info.Height * src_tmp.Font.InvRasterizationDensity;
            float u0 = (tx) / (float)atlas->TexWidth;
            float v0 = (ty) / (float)atlas->TexHeight;
            float u1 = (tx + info.Width) / (float)atlas->TexWidth;
            float v1 = (ty + info.Height) / (float)atlas->TexHeight;
            dst_font->AddGlyph(&cfg, (ImWchar)src_glyph.Codepoint, x0, y0, x1, y1, u0, v0, u1, v1, info.AdvanceX * src_tmp.Font.InvRasterizationDensity);
            ImFontGlyph* dst_glyph = &dst_font->Glyphs.back();
            IM_ASSERT(dst_glyph->Codepoint == src_glyph.Codepoint);
            if (src_glyph.Info.IsColored)
                dst_glyph->Colored = tex_use_colors = true;
            // Blit from temporary buffer to final texture
            size_t blit_src_stride = (size_t)src_glyph.Info.Width;
            size_t blit_dst_stride = (size_t)atlas->TexWidth;
            unsigned int* blit_src = src_glyph.BitmapData;
            if (atlas->TexPixelsAlpha8 != nullptr)
            {
                unsigned char* blit_dst = atlas->TexPixelsAlpha8 + (ty * blit_dst_stride) + tx;
                for (int y = 0; y < info.Height; y++, blit_dst += blit_dst_stride, blit_src += blit_src_stride)
                    for (int x = 0; x < info.Width; x++)
                        blit_dst[x] = (unsigned char)((blit_src[x] >> IM_COL32_A_SHIFT) & 0xFF);
            }
            else
            {
                unsigned int* blit_dst = atlas->TexPixelsRGBA32 + (ty * blit_dst_stride) + tx;
                for (int y = 0; y < info.Height; y++, blit_dst += blit_dst_stride, blit_src += blit_src_stride)
                    for (int x = 0; x < info.Width; x++)
                        blit_dst[x] = blit_src[x];
            }
        }
        src_tmp.Rects = nullptr;
    }
    atlas->TexPixelsUseColors = tex_use_colors;
    // Cleanup
    for (int buf_i = 0; buf_i < buf_bitmap_buffers.Size; buf_i++)
        IM_FREE(buf_bitmap_buffers[buf_i]);
    src_tmp_array.clear_destruct();
    ImFontAtlasBuildFinish(atlas);
    return true;
 }
 // FreeType memory allocation callbacks
 static void* FreeType_Alloc(FT_Memory /*memory*/, long size)
 {
    return GImGuiFreeTypeAllocFunc((size_t)size, GImGuiFreeTypeAllocatorUserData);
 }
 static void FreeType_Free(FT_Memory /*memory*/, void* block)
 {
    GImGuiFreeTypeFreeFunc(block, GImGuiFreeTypeAllocatorUserData);
 }
 static void* FreeType_Realloc(FT_Memory /*memory*/, long cur_size, long new_size, void* block)
 {
    // Implement realloc() as we don't ask user to provide it.
    if (block == nullptr)
        return GImGuiFreeTypeAllocFunc((size_t)new_size, GImGuiFreeTypeAllocatorUserData);
    if (new_size == 0)
    {
        GImGuiFreeTypeFreeFunc(block, GImGuiFreeTypeAllocatorUserData);
        return nullptr;
    }
    if (new_size > cur_size)
    {
        void* new_block = GImGuiFreeTypeAllocFunc((size_t)new_size, GImGuiFreeTypeAllocatorUserData);
        memcpy(new_block, block, (size_t)cur_size);
        GImGuiFreeTypeFreeFunc(block, GImGuiFreeTypeAllocatorUserData);
        return new_block;
    }
    return block;
 }
 static bool ImFontAtlasBuildWithFreeType(ImFontAtlas* atlas)
 {
    // FreeType memory management: https://www.freetype.org/freetype2/docs/design/design-4.html
    FT_MemoryRec_ memory_rec = {};
    memory_rec.user = nullptr;
    memory_rec.alloc = &FreeType_Alloc;
    memory_rec.free = &FreeType_Free;
    memory_rec.realloc = &FreeType_Realloc;
    // https://www.freetype.org/freetype2/docs/reference/ft2-module_management.html#FT_New_Library
    FT_Library ft_library;
    FT_Error error = FT_New_Library(&memory_rec, &ft_library);
    if (error != 0)
        return false;
    // If you don't call FT_Add_Default_Modules() the rest of code may work, but FreeType won't use our custom allocator.
    FT_Add_Default_Modules(ft_library);
 #ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
    // Install svg hooks for FreeType
    // https://freetype.org/freetype2/docs/reference/ft2-properties.html#svg-hooks
    // https://freetype.org/freetype2/docs/reference/ft2-svg_fonts.html#svg_fonts
    SVG_RendererHooks hooks = { ImGuiLunasvgPortInit, ImGuiLunasvgPortFree, ImGuiLunasvgPortRender, ImGuiLunasvgPortPresetSlot };
    FT_Property_Set(ft_library, "ot-svg", "svg-hooks", &hooks);
 #endif // IMGUI_ENABLE_FREETYPE_LUNASVG
    bool ret = ImFontAtlasBuildWithFreeTypeEx(ft_library, atlas, atlas->FontBuilderFlags);
    FT_Done_Library(ft_library);
    return ret;
 }
 const ImFontBuilderIO* ImGuiFreeType::GetBuilderForFreeType()
 {
    static ImFontBuilderIO io;
    io.FontBuilder_Build = ImFontAtlasBuildWithFreeType;
    return &io;
 }
 void ImGuiFreeType::SetAllocatorFunctions(void* (*alloc_func)(size_t sz, void* user_data), void (*free_func)(void* ptr, void* user_data), void* user_data)
 {
    GImGuiFreeTypeAllocFunc = alloc_func;
    GImGuiFreeTypeFreeFunc = free_func;
    GImGuiFreeTypeAllocatorUserData = user_data;
 }
 #ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
 // For more details, see https://gitlab.freedesktop.org/freetype/freetype-demos/-/blob/master/src/rsvg-port.c
 // The original code from the demo is licensed under CeCILL-C Free Software License Agreement (https://gitlab.freedesktop.org/freetype/freetype/-/blob/master/LICENSE.TXT)
 struct LunasvgPortState
 {
    FT_Error            err = FT_Err_Ok;
    lunasvg::Matrix     matrix;
    std::unique_ptr<lunasvg::Document> svg = nullptr;
 };
 static FT_Error ImGuiLunasvgPortInit(FT_Pointer* _state)
 {
    *_state = IM_NEW(LunasvgPortState)();
    return FT_Err_Ok;
 }
 static void ImGuiLunasvgPortFree(FT_Pointer* _state)
 {
    IM_DELETE(*(LunasvgPortState**)_state);
 }
 static FT_Error ImGuiLunasvgPortRender(FT_GlyphSlot slot, FT_Pointer* _state)
 {
    LunasvgPortState* state = *(LunasvgPortState**)_state;
    // If there was an error while loading the svg in ImGuiLunasvgPortPresetSlot(), the renderer hook still get called, so just returns the error.
    if (state->err != FT_Err_Ok)
        return state->err;
    // rows is height, pitch (or stride) equals to width * sizeof(int32)
    lunasvg::Bitmap bitmap((uint8_t*)slot->bitmap.buffer, slot->bitmap.width, slot->bitmap.rows, slot->bitmap.pitch);
    state->svg->setMatrix(state->svg->matrix().identity()); // Reset the svg matrix to the default value
    state->svg->render(bitmap, state->matrix);              // state->matrix is already scaled and translated
    state->err = FT_Err_Ok;
    return state->err;
 }
 static FT_Error ImGuiLunasvgPortPresetSlot(FT_GlyphSlot slot, FT_Bool cache, FT_Pointer* _state)
 {
    FT_SVG_Document   document = (FT_SVG_Document)slot->other;
    LunasvgPortState* state = *(LunasvgPortState**)_state;
    FT_Size_Metrics&  metrics = document->metrics;
    // This function is called twice, once in the FT_Load_Glyph() and another right before ImGuiLunasvgPortRender().
    // If it's the latter, don't do anything because it's // already done in the former.
    if (cache)
        return state->err;
    state->svg = lunasvg::Document::loadFromData((const char*)document->svg_document, document->svg_document_length);
    if (state->svg == nullptr)
    {
        state->err = FT_Err_Invalid_SVG_Document;
        return state->err;
    }
    lunasvg::Box box = state->svg->box();
    double scale = std::min(metrics.x_ppem / box.w, metrics.y_ppem / box.h);
    double xx = (double)document->transform.xx / (1 << 16);
    double xy = -(double)document->transform.xy / (1 << 16);
    double yx = -(double)document->transform.yx / (1 << 16);
    double yy = (double)document->transform.yy / (1 << 16);
    double x0 = (double)document->delta.x / 64 * box.w / metrics.x_ppem;
    double y0 = -(double)document->delta.y / 64 * box.h / metrics.y_ppem;
    // Scale and transform, we don't translate the svg yet
    state->matrix.identity();
    state->matrix.scale(scale, scale);
    state->matrix.transform(xx, xy, yx, yy, x0, y0);
    state->svg->setMatrix(state->matrix);
    // Pre-translate the matrix for the rendering step
    state->matrix.translate(-box.x, -box.y);
    // Get the box again after the transformation
    box = state->svg->box();
    // Calculate the bitmap size
    slot->bitmap_left = FT_Int(box.x);
    slot->bitmap_top = FT_Int(-box.y);
    slot->bitmap.rows = (unsigned int)(ImCeil((float)box.h));
    slot->bitmap.width = (unsigned int)(ImCeil((float)box.w));
    slot->bitmap.pitch = slot->bitmap.width * 4;
    slot->bitmap.pixel_mode = FT_PIXEL_MODE_BGRA;
    // Compute all the bearings and set them correctly. The outline is scaled already, we just need to use the bounding box.
    double metrics_width = box.w;
    double metrics_height = box.h;
    double horiBearingX = box.x;
    double horiBearingY = -box.y;
    double vertBearingX = slot->metrics.horiBearingX / 64.0 - slot->metrics.horiAdvance / 64.0 / 2.0;
    double vertBearingY = (slot->metrics.vertAdvance / 64.0 - slot->metrics.height / 64.0) / 2.0;
    slot->metrics.width = FT_Pos(IM_ROUND(metrics_width * 64.0));   // Using IM_ROUND() assume width and height are positive
    slot->metrics.height = FT_Pos(IM_ROUND(metrics_height * 64.0));
    slot->metrics.horiBearingX = FT_Pos(horiBearingX * 64);
    slot->metrics.horiBearingY = FT_Pos(horiBearingY * 64);
    slot->metrics.vertBearingX = FT_Pos(vertBearingX * 64);
    slot->metrics.vertBearingY = FT_Pos(vertBearingY * 64);
    if (slot->metrics.vertAdvance == 0)
        slot->metrics.vertAdvance = FT_Pos(metrics_height * 1.2 * 64.0);
    state->err = FT_Err_Ok;
    return state->err;
 }
 #endif // #ifdef IMGUI_ENABLE_FREETYPE_LUNASVG
 //-----------------------------------------------------------------------------
 #ifdef __GNUC__
 #pragma GCC diagnostic pop
 #endif
 #ifdef _MSC_VER
 #pragma warning (pop)
 #endif
 #endif // #ifndef IMGUI_DISABLE
--- a/dep/imgui/src/imgui_tables.cpp
+++ b/dep/imgui/src/imgui_tables.cpp
@ -1,4 +1,4 @@
-// dear imgui, v1.90.1
+// dear imgui, v1.90.4
 // (tables and columns code)
 /*
@ -498,7 +498,7 @@ bool    ImGui::BeginTableEx(const char* name, ImGuiID id, int columns_count, ImG
    table->DeclColumnsCount = table->AngledHeadersCount = 0;
    if (previous_frame_active + 1 < g.FrameCount)
        table->IsActiveIdInTable = false;
-    temp_data->AngledheadersExtraWidth = 0.0f;
+    temp_data->AngledHeadersExtraWidth = 0.0f;
    // Using opaque colors facilitate overlapping lines of the grid, otherwise we'd need to improve TableDrawBorders()
    table->BorderColorStrong = GetColorU32(ImGuiCol_TableBorderStrong);
@ -1344,7 +1344,7 @@ void    ImGui::EndTable()
            max_pos_x = ImMax(max_pos_x, table->Columns[table->RightMostEnabledColumn].WorkMaxX + table->CellPaddingX + table->OuterPaddingX - outer_padding_for_border);
        if (table->ResizedColumn != -1)
            max_pos_x = ImMax(max_pos_x, table->ResizeLockMinContentsX2);
-        table->InnerWindow->DC.CursorMaxPos.x = max_pos_x + table->TempData->AngledheadersExtraWidth;
+        table->InnerWindow->DC.CursorMaxPos.x = max_pos_x + table->TempData->AngledHeadersExtraWidth;
    }
    // Pop clipping rect
@ -1462,7 +1462,7 @@ void    ImGui::EndTable()
    }
    else if (temp_data->UserOuterSize.x <= 0.0f)
    {
-        const float decoration_size = table->TempData->AngledheadersExtraWidth + ((table->Flags & ImGuiTableFlags_ScrollX) ? inner_window->ScrollbarSizes.x : 0.0f);
+        const float decoration_size = table->TempData->AngledHeadersExtraWidth + ((table->Flags & ImGuiTableFlags_ScrollX) ? inner_window->ScrollbarSizes.x : 0.0f);
        outer_window->DC.IdealMaxPos.x = ImMax(outer_window->DC.IdealMaxPos.x, table->OuterRect.Min.x + table->ColumnsAutoFitWidth + decoration_size - temp_data->UserOuterSize.x);
        outer_window->DC.CursorMaxPos.x = ImMax(backup_outer_max_pos.x, ImMin(table->OuterRect.Max.x, table->OuterRect.Min.x + table->ColumnsAutoFitWidth));
    }
@ -1567,6 +1567,7 @@ void ImGui::TableSetupColumn(const char* label, ImGuiTableColumnFlags flags, flo
    }
    // Store name (append with zero-terminator in contiguous buffer)
    // FIXME: If we recorded the number of \n in names we could compute header row height
    column->NameOffset = -1;
    if (label != NULL && label[0] != 0)
    {
@ -2154,6 +2155,8 @@ void ImGui::TableEndCell(ImGuiTable* table)
 // - TableSetColumnWidthAutoAll() [Internal]
 // - TableUpdateColumnsWeightFromWidth() [Internal]
 //-------------------------------------------------------------------------
 // Note that actual columns widths are computed in TableUpdateLayout().
 //-------------------------------------------------------------------------
 // Maximum column content width given current layout. Use column->MinX so this value on a per-column basis.
 float ImGui::TableGetMaxColumnWidth(const ImGuiTable* table, int column_n)
@ -2927,6 +2930,7 @@ void ImGui::TableSortSpecsBuild(ImGuiTable* table)
 // [SECTION] Tables: Headers
 //-------------------------------------------------------------------------
 // - TableGetHeaderRowHeight() [Internal]
 // - TableGetHeaderAngledMaxLabelWidth() [Internal]
 // - TableHeadersRow()
 // - TableHeader()
 // - TableAngledHeadersRow()
@ -2958,7 +2962,7 @@ float ImGui::TableGetHeaderAngledMaxLabelWidth()
        if (IM_BITARRAY_TESTBIT(table->EnabledMaskByIndex, column_n))
            if (table->Columns[column_n].Flags & ImGuiTableColumnFlags_AngledHeader)
                width = ImMax(width, CalcTextSize(TableGetColumnName(table, column_n), NULL, true).x);
-    return width + g.Style.CellPadding.x * 2.0f;
+    return width + g.Style.CellPadding.y * 2.0f; // Swap padding
 }
 // [Public] This is a helper to output TableHeader() calls based on the column names declared in TableSetupColumn().
@ -3082,7 +3086,7 @@ void ImGui::TableHeader(const char* label)
        if ((table->RowFlags & ImGuiTableRowFlags_Headers) == 0)
            TableSetBgColor(ImGuiTableBgTarget_CellBg, GetColorU32(ImGuiCol_TableHeaderBg), table->CurrentColumn);
    }
-    RenderNavHighlight(bb, id, ImGuiNavHighlightFlags_TypeThin | ImGuiNavHighlightFlags_NoRounding);
+    RenderNavHighlight(bb, id, ImGuiNavHighlightFlags_Compact | ImGuiNavHighlightFlags_NoRounding);
    if (held)
        table->HeldHeaderColumn = (ImGuiTableColumnIdx)column_n;
    window->DC.CursorPos.y -= g.Style.ItemSpacing.y * 0.5f;
@ -3180,25 +3184,25 @@ void ImGui::TableAngledHeadersRowEx(float angle, float max_label_width)
    // Calculate our base metrics and set angled headers data _before_ the first call to TableNextRow()
    // FIXME-STYLE: Would it be better for user to submit 'max_label_width' or 'row_height' ? One can be derived from the other.
-    const float header_height = table->RowCellPaddingY * 2.0f + g.FontSize;
+    const float header_height = g.FontSize + g.Style.CellPadding.x * 2.0f;
    const float row_height = ImFabs(ImRotate(ImVec2(max_label_width, flip_label ? +header_height : -header_height), cos_a, sin_a).y);
    const ImVec2 header_angled_vector = unit_right * (row_height / -sin_a);
    table->AngledHeadersHeight = row_height;
    table->AngledHeadersSlope = (sin_a != 0.0f) ? (cos_a / sin_a) : 0.0f;
    const ImVec2 header_angled_vector = unit_right * (row_height / -sin_a); // vector from bottom-left to top-left, and from bottom-right to top-right
    // Declare row, override and draw our own background
    TableNextRow(ImGuiTableRowFlags_Headers, row_height);
    TableNextColumn();
    const ImRect row_r(table->WorkRect.Min.x, table->BgClipRect.Min.y, table->WorkRect.Max.x, table->RowPosY2);
    table->DrawSplitter->SetCurrentChannel(draw_list, TABLE_DRAW_CHANNEL_BG0);
    float clip_rect_min_x = table->BgClipRect.Min.x;
    if (table->FreezeColumnsCount > 0)
        clip_rect_min_x = ImMax(clip_rect_min_x, table->Columns[table->FreezeColumnsCount - 1].MaxX);
    TableSetBgColor(ImGuiTableBgTarget_RowBg0, 0); // Cancel
    PushClipRect(table->BgClipRect.Min, table->BgClipRect.Max, false); // Span all columns
-    draw_list->AddRectFilled(table->BgClipRect.Min, table->BgClipRect.Max, GetColorU32(ImGuiCol_TableHeaderBg, 0.25f)); // FIXME-STYLE: Change row background with an arbitrary color.
+    draw_list->AddRectFilled(ImVec2(table->BgClipRect.Min.x, row_r.Min.y), ImVec2(table->BgClipRect.Max.x, row_r.Max.y), GetColorU32(ImGuiCol_TableHeaderBg, 0.25f)); // FIXME-STYLE: Change row background with an arbitrary color.
    PushClipRect(ImVec2(clip_rect_min_x, table->BgClipRect.Min.y), table->BgClipRect.Max, true); // Span all columns
    const ImRect row_r(table->WorkRect.Min.x, table->BgClipRect.Min.y, table->WorkRect.Max.x, window->DC.CursorPos.y + row_height);
    const ImGuiID row_id = GetID("##AngledHeaders");
    ButtonBehavior(row_r, row_id, NULL, NULL);
    KeepAliveID(row_id);
@ -3209,7 +3213,9 @@ void ImGui::TableAngledHeadersRowEx(float angle, float max_label_width)
        if (table_instance->HoveredRowLast == 0 && table->HoveredColumnBorder == -1 && (g.ActiveId == 0 || g.ActiveId == row_id || (table->IsActiveIdInTable || g.DragDropActive)))
            highlight_column_n = table->HoveredColumnBody;
    // Draw background and labels in first pass, then all borders.
    float max_x = 0.0f;
    ImVec2 padding = g.Style.CellPadding; // We will always use swapped component
    for (int pass = 0; pass < 2; pass++)
        for (int order_n = 0; order_n < table->ColumnsCount; order_n++)
        {
@ -3231,25 +3237,45 @@ void ImGui::TableAngledHeadersRowEx(float angle, float max_label_width)
                draw_list->AddQuadFilled(bg_shape[0], bg_shape[1], bg_shape[2], bg_shape[3], GetColorU32(ImGuiCol_TableHeaderBg));
                if (column_n == highlight_column_n)
                    draw_list->AddQuadFilled(bg_shape[0], bg_shape[1], bg_shape[2], bg_shape[3], GetColorU32(ImGuiCol_Header)); // Highlight on hover
                //draw_list->AddQuad(bg_shape[0], bg_shape[1], bg_shape[2], bg_shape[3], GetColorU32(ImGuiCol_TableBorderLight), 1.0f);
                max_x = ImMax(max_x, bg_shape[3].x);
-                // Draw label (first draw at an offset where RenderTextXXX() function won't meddle with applying current ClipRect, then transform to final offset)
+                // Draw label
-                // FIXME: May be worth tidying up all those operations to make them easier to understand.
+                // - First draw at an offset where RenderTextXXX() function won't meddle with applying current ClipRect, then transform to final offset.
                // - Handle multiple lines manually, as we want each lines to follow on the horizontal border, rather than see a whole block rotated.
                const char* label_name = TableGetColumnName(table, column_n);
-                const float clip_width = max_label_width - (sin_a * table->RowCellPaddingY);
+                const char* label_name_end = FindRenderedTextEnd(label_name);
-                ImRect label_r(window->ClipRect.Min, window->ClipRect.Min + ImVec2(clip_width + (flip_label ? 0.0f : table->CellPaddingX), header_height + table->RowCellPaddingY));
+                const float line_off_step_x = g.FontSize / -sin_a;
-                ImVec2 label_size = CalcTextSize(label_name, NULL, true);
+                float line_off_curr_x = 0.0f;
-                ImVec2 label_off = ImVec2(flip_label ? ImMax(0.0f, max_label_width - label_size.x - table->CellPaddingX) : table->CellPaddingX, table->RowCellPaddingY);
+                while (label_name < label_name_end)
-                int vtx_idx_begin = draw_list->_VtxCurrentIdx;
+                {
-                RenderTextEllipsis(draw_list, label_r.Min + label_off, label_r.Max, label_r.Max.x, label_r.Max.x, label_name, NULL, &label_size);
+                    const char* label_name_eol = strchr(label_name, '\n');
-                //if (g.IO.KeyShift) { draw_list->AddRect(label_r.Min, label_r.Max, IM_COL32(0, 255, 0, 255), 0.0f, 0, 2.0f); }
+                    if (label_name_eol == NULL)
-                int vtx_idx_end = draw_list->_VtxCurrentIdx;
+                        label_name_eol = label_name_end;
-                // Rotate and offset label
+                    // FIXME: Individual line clipping for right-most column is broken for negative angles.
-                ImVec2 pivot_in = label_r.GetBL();
+                    ImVec2 label_size = CalcTextSize(label_name, label_name_eol);
-                ImVec2 pivot_out = ImVec2(column->WorkMinX, row_r.Max.y) + (flip_label ? (unit_right * clip_width) : ImVec2(header_height, 0.0f));
+                    float clip_width = max_label_width - padding.y; // Using padding.y*2.0f would be symetrical but hide more text.
-                ShadeVertsTransformPos(draw_list, vtx_idx_begin, vtx_idx_end, pivot_in, label_cos_a, label_sin_a, pivot_out); // Rotate and offset
+                    float clip_height = ImMin(label_size.y, column->ClipRect.Max.x - column->WorkMinX - line_off_curr_x);
                    ImRect clip_r(window->ClipRect.Min, window->ClipRect.Min + ImVec2(clip_width, clip_height));
                    int vtx_idx_begin = draw_list->_VtxCurrentIdx;
                    RenderTextEllipsis(draw_list, clip_r.Min, clip_r.Max, clip_r.Max.x, clip_r.Max.x, label_name, label_name_eol, &label_size);
                    int vtx_idx_end = draw_list->_VtxCurrentIdx;
                    // Rotate and offset label
                    ImVec2 pivot_in = ImVec2(window->ClipRect.Min.x, window->ClipRect.Min.y + label_size.y);
                    ImVec2 pivot_out = ImVec2(column->WorkMinX, row_r.Max.y);
                    line_off_curr_x += line_off_step_x;
                    pivot_out += unit_right * padding.y;
                    if (flip_label)
                        pivot_out += unit_right * (clip_width - ImMax(0.0f, clip_width - label_size.x));
                    pivot_out.x += flip_label ? line_off_curr_x - line_off_step_x : line_off_curr_x;
                    ShadeVertsTransformPos(draw_list, vtx_idx_begin, vtx_idx_end, pivot_in, label_cos_a, label_sin_a, pivot_out); // Rotate and offset
                    //if (g.IO.KeyShift) { ImDrawList* fg_dl = GetForegroundDrawList(); vtx_idx_begin = fg_dl->_VtxCurrentIdx; fg_dl->AddRect(clip_r.Min, clip_r.Max, IM_COL32(0, 255, 0, 255), 0.0f, 0, 2.0f); ShadeVertsTransformPos(fg_dl, vtx_idx_begin, fg_dl->_VtxCurrentIdx, pivot_in, label_cos_a, label_sin_a, pivot_out); }
                    // Register header width
                    column->ContentMaxXHeadersUsed = column->ContentMaxXHeadersIdeal = column->WorkMinX + ImCeil(line_off_curr_x);
                    label_name = label_name_eol + 1;
                }
            }
            if (pass == 1)
            {
@ -3259,7 +3285,7 @@ void ImGui::TableAngledHeadersRowEx(float angle, float max_label_width)
        }
    PopClipRect();
    PopClipRect();
-    table->TempData->AngledheadersExtraWidth = ImMax(0.0f, max_x - table->Columns[table->RightMostEnabledColumn].MaxX);
+    table->TempData->AngledHeadersExtraWidth = ImMax(0.0f, max_x - table->Columns[table->RightMostEnabledColumn].MaxX);
 }
 //-------------------------------------------------------------------------
--- a/dep/imgui/src/imgui_widgets.cpp
+++ b/dep/imgui/src/imgui_widgets.cpp
@ -1,4 +1,4 @@
-// dear imgui, v1.90.1
+// dear imgui, v1.90.4
 // (widgets code)
 /*
@ -477,6 +477,9 @@ void ImGui::BulletTextV(const char* fmt, va_list args)
 //   Frame N + RepeatDelay + RepeatRate*N   true                     true              -                   true
 //-------------------------------------------------------------------------------------------------------------------------------------------------
 // FIXME: For refactor we could output flags, incl mouse hovered vs nav keyboard vs nav triggered etc.
 // And better standardize how widgets use 'GetColor32((held && hovered) ? ... : hovered ? ...)' vs 'GetColor32(held ? ... : hovered ? ...);'
 // For mouse feedback we typically prefer the 'held && hovered' test, but for nav feedback not always. Outputting hovered=true on Activation may be misleading.
 bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool* out_held, ImGuiButtonFlags flags)
 {
    ImGuiContext& g = *GImGui;
@ -597,9 +600,9 @@ bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool
            g.NavDisableHighlight = true;
    }
-    // Gamepad/Keyboard navigation
+    // Gamepad/Keyboard handling
-    // We report navigated item as hovered but we don't set g.HoveredId to not interfere with mouse.
+    // We report navigated and navigation-activated items as hovered but we don't set g.HoveredId to not interfere with mouse.
-    if (g.NavId == id && !g.NavDisableHighlight && g.NavDisableMouseHover && (g.ActiveId == 0 || g.ActiveId == id || g.ActiveId == window->MoveId))
+    if (g.NavId == id && !g.NavDisableHighlight && g.NavDisableMouseHover)
        if (!(flags & ImGuiButtonFlags_NoHoveredOnFocus))
            hovered = true;
    if (g.NavActivateDownId == id)
@ -621,8 +624,10 @@ bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool
            pressed = true;
            SetActiveID(id, window);
            g.ActiveIdSource = g.NavInputSource;
-            if (!(flags & ImGuiButtonFlags_NoNavFocus))
+            if (!(flags & ImGuiButtonFlags_NoNavFocus) && !(g.NavActivateFlags & ImGuiActivateFlags_FromShortcut))
                SetFocusID(id, window);
            if (g.NavActivateFlags & ImGuiActivateFlags_FromShortcut)
                g.ActiveIdFromShortcut = true;
        }
    }
@ -666,13 +671,19 @@ bool ImGui::ButtonBehavior(const ImRect& bb, ImGuiID id, bool* out_hovered, bool
        else if (g.ActiveIdSource == ImGuiInputSource_Keyboard || g.ActiveIdSource == ImGuiInputSource_Gamepad)
        {
            // When activated using Nav, we hold on the ActiveID until activation button is released
-            if (g.NavActivateDownId != id)
+            if (g.NavActivateDownId == id)
                held = true; // hovered == true not true as we are already likely hovered on direct activation.
            else
                ClearActiveID();
        }
        if (pressed)
            g.ActiveIdHasBeenPressedBefore = true;
    }
    // Activation highlight (this may be a remote activation)
    if (g.NavHighlightActivatedId == id)
        hovered = true;
    if (out_hovered) *out_hovered = hovered;
    if (out_held) *out_held = held;
@ -966,7 +977,6 @@ bool ImGui::ScrollbarEx(const ImRect& bb_frame, ImGuiID id, ImGuiAxis axis, ImS6
        // Click position in scrollbar normalized space (0.0f->1.0f)
        const float clicked_v_norm = ImSaturate((mouse_pos_v - scrollbar_pos_v) / scrollbar_size_v);
        SetHoveredID(id);
        bool seek_absolute = false;
        if (g.ActiveIdIsJustActivated)
@ -1774,7 +1784,7 @@ bool ImGui::BeginComboPopup(ImGuiID popup_id, const ImRect& bb, ImGuiComboFlags
    // This is essentially a specialized version of BeginPopupEx()
    char name[16];
-    ImFormatString(name, IM_ARRAYSIZE(name), "##Combo_%02d", g.BeginPopupStack.Size); // Recycle windows based on depth
+    ImFormatString(name, IM_ARRAYSIZE(name), "##Combo_%02d", g.BeginComboDepth); // Recycle windows based on depth
    // Set position given a custom constraint (peak into expected window size so we can position it)
    // FIXME: This might be easier to express with an hypothetical SetNextWindowPosConstraints() function?
@ -1801,12 +1811,15 @@ bool ImGui::BeginComboPopup(ImGuiID popup_id, const ImRect& bb, ImGuiComboFlags
        IM_ASSERT(0);   // This should never happen as we tested for IsPopupOpen() above
        return false;
    }
    g.BeginComboDepth++;
    return true;
 }
 void ImGui::EndCombo()
 {
    ImGuiContext& g = *GImGui;
    EndPopup();
    g.BeginComboDepth--;
 }
 // Call directly after the BeginCombo/EndCombo block. The preview is designed to only host non-interactive elements
@ -1982,7 +1995,7 @@ bool ImGui::Combo(const char* label, int* current_item, bool (*old_getter)(void*
 // - DataTypeGetInfo()
 // - DataTypeFormatString()
 // - DataTypeApplyOp()
-// - DataTypeApplyOpFromText()
+// - DataTypeApplyFromText()
 // - DataTypeCompare()
 // - DataTypeClamp()
 // - GetMinimumStepAtDecimalPrecision
@ -4175,27 +4188,32 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
    float scroll_y = is_multiline ? draw_window->Scroll.y : FLT_MAX;
    const bool init_reload_from_user_buf = (state != NULL && state->ReloadUserBuf);
    const bool init_changed_specs = (state != NULL && state->Stb.single_line != !is_multiline); // state != NULL means its our state.
    const bool init_make_active = (user_clicked || user_scroll_finish || input_requested_by_nav);
    const bool init_state = (init_make_active || user_scroll_active);
-    if ((init_state && g.ActiveId != id) || init_changed_specs)
+    if ((init_state && g.ActiveId != id) || init_changed_specs || init_reload_from_user_buf)
    {
        // Access state even if we don't own it yet.
        state = &g.InputTextState;
        state->CursorAnimReset();
        state->ReloadUserBuf = false;
        // Backup state of deactivating item so they'll have a chance to do a write to output buffer on the same frame they report IsItemDeactivatedAfterEdit (#4714)
        InputTextDeactivateHook(state->ID);
-        // Take a copy of the initial buffer value (both in original UTF-8 format and converted to wchar)
+        // From the moment we focused we are normally ignoring the content of 'buf' (unless we are in read-only mode)
        // From the moment we focused we are ignoring the content of 'buf' (unless we are in read-only mode)
        const int buf_len = (int)strlen(buf);
-        state->InitialTextA.resize(buf_len + 1);    // UTF-8. we use +1 to make sure that .Data is always pointing to at least an empty string.
+        if (!init_reload_from_user_buf)
-        memcpy(state->InitialTextA.Data, buf, buf_len + 1);
+        {
            // Take a copy of the initial buffer value.
            state->InitialTextA.resize(buf_len + 1);    // UTF-8. we use +1 to make sure that .Data is always pointing to at least an empty string.
            memcpy(state->InitialTextA.Data, buf, buf_len + 1);
        }
        // Preserve cursor position and undo/redo stack if we come back to same widget
-        // FIXME: Since we reworked this on 2022/06, may want to differenciate recycle_cursor vs recycle_undostate?
+        // FIXME: Since we reworked this on 2022/06, may want to differentiate recycle_cursor vs recycle_undostate?
-        bool recycle_state = (state->ID == id && !init_changed_specs);
+        bool recycle_state = (state->ID == id && !init_changed_specs && !init_reload_from_user_buf);
        if (recycle_state && (state->CurLenA != buf_len || (state->TextAIsValid && strncmp(state->TextA.Data, buf, buf_len) != 0)))
            recycle_state = false;
@ -4220,7 +4238,13 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
            stb_textedit_initialize_state(&state->Stb, !is_multiline);
        }
-        if (!is_multiline)
+        if (init_reload_from_user_buf)
        {
            state->Stb.select_start = state->ReloadSelectionStart;
            state->Stb.cursor = state->Stb.select_end = state->ReloadSelectionEnd;
            state->CursorClamp();
        }
        else if (!is_multiline)
        {
            if (flags & ImGuiInputTextFlags_AutoSelectAll)
                select_all = true;
@ -4250,6 +4274,8 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
        g.ActiveIdUsingNavDirMask |= (1 << ImGuiDir_Left) | (1 << ImGuiDir_Right);
        if (is_multiline || (flags & ImGuiInputTextFlags_CallbackHistory))
            g.ActiveIdUsingNavDirMask |= (1 << ImGuiDir_Up) | (1 << ImGuiDir_Down);
        SetKeyOwner(ImGuiKey_Enter, id);
        SetKeyOwner(ImGuiKey_KeypadEnter, id);
        SetKeyOwner(ImGuiKey_Home, id);
        SetKeyOwner(ImGuiKey_End, id);
        if (is_multiline)
@ -4259,8 +4285,6 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
        }
        if (is_osx)
            SetKeyOwner(ImGuiMod_Alt, id);
        if (flags & (ImGuiInputTextFlags_CallbackCompletion | ImGuiInputTextFlags_AllowTabInput)) // Disable keyboard tabbing out as we will use the \t character.
            SetShortcutRouting(ImGuiKey_Tab, id);
    }
    // We have an edge case if ActiveId was set through another widget (e.g. widget being swapped), clear id immediately (don't wait until the end of the function)
@ -4389,11 +4413,20 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
        // We expect backends to emit a Tab key but some also emit a Tab character which we ignore (#2467, #1336)
        // (For Tab and Enter: Win32/SFML/Allegro are sending both keys and chars, GLFW and SDL are only sending keys. For Space they all send all threes)
-        if ((flags & ImGuiInputTextFlags_AllowTabInput) && Shortcut(ImGuiKey_Tab, id, ImGuiInputFlags_Repeat) && !is_readonly)
+        if ((flags & ImGuiInputTextFlags_AllowTabInput) && !is_readonly)
        {
-            unsigned int c = '\t'; // Insert TAB
+            if (Shortcut(ImGuiKey_Tab, id, ImGuiInputFlags_Repeat))
-            if (InputTextFilterCharacter(&g, &c, flags, callback, callback_user_data, ImGuiInputSource_Keyboard))
+            {
-                state->OnKeyPressed((int)c);
+                unsigned int c = '\t'; // Insert TAB
                if (InputTextFilterCharacter(&g, &c, flags, callback, callback_user_data, ImGuiInputSource_Keyboard))
                    state->OnKeyPressed((int)c);
            }
            // FIXME: Implement Shift+Tab
            /*
            if (Shortcut(ImGuiKey_Tab | ImGuiMod_Shift, id, ImGuiInputFlags_Repeat))
            {
            }
            */
        }
        // Process regular text input (before we check for Return because using some IME will effectively send a Return?)
@ -6308,7 +6341,7 @@ bool ImGui::TreeNodeBehavior(ImGuiID id, ImGuiTreeNodeFlags flags, const char* l
    // Render
    const ImU32 text_col = GetColorU32(ImGuiCol_Text);
-    ImGuiNavHighlightFlags nav_highlight_flags = ImGuiNavHighlightFlags_TypeThin;
+    ImGuiNavHighlightFlags nav_highlight_flags = ImGuiNavHighlightFlags_Compact;
    if (display_frame)
    {
        // Framed type
@ -6611,7 +6644,7 @@ bool ImGui::Selectable(const char* label, bool selected, ImGuiSelectableFlags fl
        RenderFrame(bb.Min, bb.Max, col, false, 0.0f);
    }
    if (g.NavId == id)
-        RenderNavHighlight(bb, id, ImGuiNavHighlightFlags_TypeThin | ImGuiNavHighlightFlags_NoRounding);
+        RenderNavHighlight(bb, id, ImGuiNavHighlightFlags_Compact | ImGuiNavHighlightFlags_NoRounding);
    if (span_all_columns)
    {
@ -7491,6 +7524,7 @@ bool ImGui::BeginMenuEx(const char* label, const char* icon, bool enabled)
        PopItemFlag();
    bool want_open = false;
    bool want_open_nav_init = false;
    bool want_close = false;
    if (window->DC.LayoutType == ImGuiLayoutType_Vertical) // (window->Flags & (ImGuiWindowFlags_Popup|ImGuiWindowFlags_ChildMenu))
    {
@ -7533,8 +7567,9 @@ bool ImGui::BeginMenuEx(const char* label, const char* icon, bool enabled)
            want_open = true;
        if (g.NavId == id && g.NavMoveDir == ImGuiDir_Right) // Nav-Right to open
        {
-            want_open = true;
+            want_open = want_open_nav_init = true;
            NavMoveRequestCancel();
            NavRestoreHighlightAfterMove();
        }
    }
    else
@ -7566,13 +7601,13 @@ bool ImGui::BeginMenuEx(const char* label, const char* icon, bool enabled)
    if (want_open && !menu_is_open && g.OpenPopupStack.Size > g.BeginPopupStack.Size)
    {
-        // Don't reopen/recycle same menu level in the same frame, first close the other menu and yield for a frame.
+        // Don't reopen/recycle same menu level in the same frame if it is a different menu ID, first close the other menu and yield for a frame.
        OpenPopup(label);
    }
    else if (want_open)
    {
        menu_is_open = true;
-        OpenPopup(label);
+        OpenPopup(label, ImGuiPopupFlags_NoReopen);// | (want_open_nav_init ? ImGuiPopupFlags_NoReopenAlwaysNavInit : 0));
    }
    if (menu_is_open)
@ -7584,6 +7619,14 @@ bool ImGui::BeginMenuEx(const char* label, const char* icon, bool enabled)
        PopStyleVar();
        if (menu_is_open)
        {
            // Implement what ImGuiPopupFlags_NoReopenAlwaysNavInit would do:
            // Perform an init request in the case the popup was already open (via a previous mouse hover)
            if (want_open && want_open_nav_init && !g.NavInitRequest)
            {
                FocusWindow(g.CurrentWindow, ImGuiFocusRequestFlags_UnlessBelowModal);
                NavInitWindow(g.CurrentWindow, false);
            }
            // Restore LastItemData so IsItemXXXX functions can work after BeginMenu()/EndMenu()
            // (This fixes using IsItemClicked() and IsItemHovered(), but IsItemHovered() also relies on its support for ImGuiItemFlags_NoWindowHoverableCheck)
            g.LastItemData = last_item_in_parent;