From f538123210381975a8aded31f53ffff92d95a806 Mon Sep 17 00:00:00 2001
From: Connor McLaughlin <mclaughc@outlook.com>
Date: Sun, 27 Oct 2019 00:08:01 +1000
Subject: [PATCH] Frontend: Use imgui functions for handling SDL events

---
 src/duckstation/sdl_interface.cpp | 70 +++----------------------------
 src/duckstation/sdl_interface.h   |  1 -
 2 files changed, 6 insertions(+), 65 deletions(-)

diff --git a/src/duckstation/sdl_interface.cpp b/src/duckstation/sdl_interface.cpp
index d1223353f..dfd1e5532 100644
--- a/src/duckstation/sdl_interface.cpp
+++ b/src/duckstation/sdl_interface.cpp
@@ -468,8 +468,7 @@ static void HandleSDLControllerButtonEventForController(const SDL_Event* ev, Dig
 
 void SDLInterface::HandleSDLEvent(const SDL_Event* event)
 {
-  if (PassEventToImGui(event))
-    return;
+  ImGui_ImplSDL2_ProcessEvent(event);
 
   switch (event->type)
   {
@@ -489,8 +488,11 @@ void SDLInterface::HandleSDLEvent(const SDL_Event* event)
 
     case SDL_KEYDOWN:
     case SDL_KEYUP:
-      HandleSDLKeyEvent(event);
-      break;
+    {
+      if (!ImGui::GetIO().WantCaptureKeyboard)
+        HandleSDLKeyEvent(event);
+    }
+    break;
 
     case SDL_CONTROLLERDEVICEADDED:
     {
@@ -573,66 +575,6 @@ void SDLInterface::HandleSDLKeyEvent(const SDL_Event* event)
   }
 }
 
-bool SDLInterface::PassEventToImGui(const SDL_Event* event)
-{
-  ImGuiIO& io = ImGui::GetIO();
-  switch (event->type)
-  {
-    case SDL_MOUSEWHEEL:
-    {
-      if (event->wheel.x > 0)
-        io.MouseWheelH += 1;
-      if (event->wheel.x < 0)
-        io.MouseWheelH -= 1;
-      if (event->wheel.y > 0)
-        io.MouseWheel += 1;
-      if (event->wheel.y < 0)
-        io.MouseWheel -= 1;
-      return io.WantCaptureMouse;
-    }
-
-    case SDL_MOUSEBUTTONDOWN:
-    case SDL_MOUSEBUTTONUP:
-    {
-      bool down = event->type == SDL_MOUSEBUTTONDOWN;
-      if (event->button.button == SDL_BUTTON_LEFT)
-        io.MouseDown[0] = down;
-      if (event->button.button == SDL_BUTTON_RIGHT)
-        io.MouseDown[1] = down;
-      if (event->button.button == SDL_BUTTON_MIDDLE)
-        io.MouseDown[2] = down;
-      return io.WantCaptureMouse;
-    }
-
-    case SDL_MOUSEMOTION:
-    {
-      io.MousePos.x = float(event->motion.x);
-      io.MousePos.y = float(event->motion.y);
-      return io.WantCaptureMouse;
-    }
-
-    case SDL_TEXTINPUT:
-    {
-      io.AddInputCharactersUTF8(event->text.text);
-      return io.WantCaptureKeyboard;
-    }
-
-    case SDL_KEYDOWN:
-    case SDL_KEYUP:
-    {
-      int key = event->key.keysym.scancode;
-      IM_ASSERT(key >= 0 && key < IM_ARRAYSIZE(io.KeysDown));
-      io.KeysDown[key] = (event->type == SDL_KEYDOWN);
-      io.KeyShift = ((SDL_GetModState() & KMOD_SHIFT) != 0);
-      io.KeyCtrl = ((SDL_GetModState() & KMOD_CTRL) != 0);
-      io.KeyAlt = ((SDL_GetModState() & KMOD_ALT) != 0);
-      io.KeySuper = ((SDL_GetModState() & KMOD_GUI) != 0);
-      return io.WantCaptureKeyboard;
-    }
-  }
-  return false;
-}
-
 void SDLInterface::Render()
 {
   DrawImGui();
diff --git a/src/duckstation/sdl_interface.h b/src/duckstation/sdl_interface.h
index 96448ab09..af49350e1 100644
--- a/src/duckstation/sdl_interface.h
+++ b/src/duckstation/sdl_interface.h
@@ -75,7 +75,6 @@ private:
 
   void HandleSDLEvent(const SDL_Event* event);
   void HandleSDLKeyEvent(const SDL_Event* event);
-  bool PassEventToImGui(const SDL_Event* event);
   void Render();
   void RenderDisplay();
   void DrawMainMenuBar();