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https://github.com/Drezil/imgui.git
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98 lines
3.7 KiB
C++
98 lines
3.7 KiB
C++
// ImGui - standalone example application for Glfw + OpenGL 3, using programmable pipeline
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// If you are new to ImGui, see examples/README.txt and documentation at the top of imgui.cpp.
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#include <imgui.h>
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#include "imgui_impl_glfw_gl3.h"
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#include <stdio.h>
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#include <GL/gl3w.h> // This example is using gl3w to access OpenGL functions (because it is small). You may use glew/glad/glLoadGen/etc. whatever already works for you.
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#include <GLFW/glfw3.h>
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static void error_callback(int error, const char* description)
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{
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fprintf(stderr, "Error %d: %s\n", error, description);
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}
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int main(int, char**)
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{
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// Setup window
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glfwSetErrorCallback(error_callback);
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if (!glfwInit())
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return 1;
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
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glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
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#if __APPLE__
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glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
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#endif
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GLFWwindow* window = glfwCreateWindow(1280, 720, "ImGui OpenGL3 example", NULL, NULL);
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glfwMakeContextCurrent(window);
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glfwSwapInterval(1); // Enable vsync
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gl3wInit();
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// Setup ImGui binding
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ImGui_ImplGlfwGL3_Init(window, true);
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// Load Fonts
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// (there is a default font, this is only if you want to change it. see extra_fonts/README.txt for more details)
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//ImGuiIO& io = ImGui::GetIO();
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//io.Fonts->AddFontDefault();
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//io.Fonts->AddFontFromFileTTF("../../extra_fonts/Cousine-Regular.ttf", 15.0f);
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//io.Fonts->AddFontFromFileTTF("../../extra_fonts/DroidSans.ttf", 16.0f);
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//io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyClean.ttf", 13.0f);
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//io.Fonts->AddFontFromFileTTF("../../extra_fonts/ProggyTiny.ttf", 10.0f);
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//io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese());
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bool show_test_window = true;
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bool show_another_window = false;
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ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f);
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// Main loop
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while (!glfwWindowShouldClose(window))
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{
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glfwPollEvents();
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ImGui_ImplGlfwGL3_NewFrame();
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// 1. Show a simple window
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// Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets appears in a window automatically called "Debug"
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{
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static float f = 0.0f;
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ImGui::Text("Hello, world!");
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ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
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ImGui::ColorEdit3("clear color", (float*)&clear_color);
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if (ImGui::Button("Test Window")) show_test_window ^= 1;
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if (ImGui::Button("Another Window")) show_another_window ^= 1;
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ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
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}
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// 2. Show another simple window, this time using an explicit Begin/End pair
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if (show_another_window)
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{
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ImGui::Begin("Another Window", &show_another_window);
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ImGui::Text("Hello from another window!");
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ImGui::End();
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}
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// 3. Show the ImGui test window. Most of the sample code is in ImGui::ShowTestWindow()
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if (show_test_window)
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{
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ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver);
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ImGui::ShowTestWindow(&show_test_window);
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}
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// Rendering
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int display_w, display_h;
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glfwGetFramebufferSize(window, &display_w, &display_h);
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glViewport(0, 0, display_w, display_h);
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glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w);
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glClear(GL_COLOR_BUFFER_BIT);
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ImGui::Render();
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glfwSwapBuffers(window);
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}
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// Cleanup
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ImGui_ImplGlfwGL3_Shutdown();
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glfwTerminate();
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return 0;
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}
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