88 lines
2.8 KiB
C++
88 lines
2.8 KiB
C++
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#include "frame.h"
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#include <imgui_impl_glfw.h>
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#include <imgui_impl_opengl2.h>
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#include <libreborn/libreborn.h>
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// Init/Cleanup
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Frame::Frame(const char *title, const int width, const int height) {
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// Create Window
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init_glfw();
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window = create_glfw_window(title, width, height);
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// V-Sync
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glfwSwapInterval(1);
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// Setup ImGui Context
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IMGUI_CHECKVERSION();
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ImGui::CreateContext();
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ImGuiIO &io = ImGui::GetIO();
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io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;
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io.IniFilename = nullptr;
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io.LogFilename = nullptr;
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// Setup Platform/Renderer Backends
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ImGui_ImplGlfw_InitForOpenGL(window, true);
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ImGui_ImplOpenGL2_Init();
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}
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Frame::~Frame() {
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ImGui_ImplOpenGL2_Shutdown();
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ImGui_ImplGlfw_Shutdown();
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ImGui::DestroyContext();
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cleanup_glfw(window);
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}
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// Run Loop
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int Frame::run() {
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int ret = 0;
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constexpr ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
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while (!glfwWindowShouldClose(window) || ret != 0) {
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glfwPollEvents();
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// Update Style
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static float last_scale = -1.0f;
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float scale;
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get_glfw_scale(window, &scale, nullptr);
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if (scale != last_scale) {
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last_scale = scale;
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setup_style(scale);
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}
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// Start Frame
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ImGui_ImplOpenGL2_NewFrame();
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ImGui_ImplGlfw_NewFrame();
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ImGui::NewFrame();
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// Main Window
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ImGui::SetNextWindowPos({0, 0});
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int width, height;
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glfwGetFramebufferSize(window, &width, &height);
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ImGui::SetNextWindowSize({float(width), float(height)});
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if (ImGui::Begin("###Main", nullptr, ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoCollapse)) {
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ret = render();
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}
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ImGui::End();
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// Render To OpenGL
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ImGui::Render();
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glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
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glClear(GL_COLOR_BUFFER_BIT);
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ImGui_ImplOpenGL2_RenderDrawData(ImGui::GetDrawData());
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glfwSwapBuffers(window);
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}
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return ret;
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}
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// Style
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EMBEDDED_RESOURCE(Roboto_Medium_ttf);
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EMBEDDED_RESOURCE(Cousine_Regular_ttf);
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void Frame::setup_style(const float scale) {
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// Fonts
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const ImGuiIO &io = ImGui::GetIO();
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io.Fonts->Clear();
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ImFontConfig font_cfg;
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font_cfg.FontDataOwnedByAtlas = false;
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io.Fonts->AddFontFromMemoryTTF(Roboto_Medium_ttf, int(Roboto_Medium_ttf_len), 24.0f * scale, &font_cfg);
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monospace = io.Fonts->AddFontFromMemoryTTF(Cousine_Regular_ttf, int(Cousine_Regular_ttf_len), 18.0f * scale, &font_cfg);
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// Style
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ImGuiStyle &style = ImGui::GetStyle();
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style = ImGuiStyle();
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style.WindowBorderSize = 0;
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ImGui::StyleColorsDark(&style);
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style.ScaleAllSizes(scale);
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}
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