86 lines
2.6 KiB
C++
86 lines
2.6 KiB
C++
#include <QtImGui.h>
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#include <imgui.h>
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#include <QApplication>
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#include <QTimer>
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#include <QSurfaceFormat>
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#include <QOpenGLWidget>
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#include <QOpenGLExtraFunctions>
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class DemoWindow : public QOpenGLWidget, private QOpenGLExtraFunctions
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{
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protected:
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void initializeGL() override
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{
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initializeOpenGLFunctions();
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QtImGui::initialize(this);
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}
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void paintGL() override
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{
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QtImGui::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::SetNextWindowSize(ImVec2(200,100), ImGuiSetCond_FirstUseEver);
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ImGui::Begin("Another Window", &show_another_window);
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ImGui::Text("Hello");
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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), ImGuiSetCond_FirstUseEver);
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ImGui::ShowTestWindow();
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}
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// Do render before ImGui UI is rendered
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glViewport(0, 0, width(), height());
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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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}
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private:
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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 = ImColor(114, 144, 154);
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};
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int main(int argc, char *argv[])
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{
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// Use OpenGL 3 Core Profile
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QSurfaceFormat glFormat;
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glFormat.setVersion(3, 3);
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glFormat.setProfile(QSurfaceFormat::CoreProfile);
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QSurfaceFormat::setDefaultFormat(glFormat);
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QApplication a(argc, argv);
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// Show window
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DemoWindow w;
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w.setWindowTitle("QtImGui widget example");
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w.resize(1280, 720);
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w.show();
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// Update at 60 fps
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QTimer timer;
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QObject::connect(&timer, SIGNAL(timeout()), &w, SLOT(update()));
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timer.start(16);
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return a.exec();
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}
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