75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
/*
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Copyright 2021 flyinghead
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This file is part of Flycast.
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Flycast is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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Flycast is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Flycast. If not, see <https://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "imgui.h"
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#include "gui.h"
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#include <memory>
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#include <unordered_map>
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#include <array>
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class ImGuiDriver
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{
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public:
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ImGuiDriver() {
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gui_initFonts();
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}
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virtual ~ImGuiDriver() = default;
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virtual void reset() {
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aspectRatios.clear();
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}
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virtual void newFrame() = 0;
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virtual void renderDrawData(ImDrawData* drawData, bool gui_open) = 0;
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virtual void present() = 0;
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virtual void setFrameRendered() {}
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virtual ImTextureID getTexture(const std::string& name) = 0;
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virtual ImTextureID updateTexture(const std::string& name, const u8 *data, int width, int height, bool nearestSampling) = 0;
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virtual void deleteTexture(const std::string& name) = 0;
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ImTextureID updateTextureAndAspectRatio(const std::string& name, const u8 *data, int width, int height, bool nearestSampling)
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{
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ImTextureID textureId = updateTexture(name, data, width, height, nearestSampling);
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if (textureId != ImTextureID())
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aspectRatios[textureId] = (float)width / height;
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return textureId;
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}
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float getAspectRatio(ImTextureID textureId)
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{
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auto it = aspectRatios.find(textureId);
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if (it != aspectRatios.end())
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return it->second;
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else
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return 1.f;
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}
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void updateAspectRatio(ImTextureID textureId, float aspectRatio) {
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if (textureId != ImTextureID())
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aspectRatios[textureId] = aspectRatio;
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}
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private:
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std::unordered_map<ImTextureID, float> aspectRatios; // TODO move this out
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};
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extern std::unique_ptr<ImGuiDriver> imguiDriver;
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