| // dear imgui: standalone example application for OSX + OpenGL2, using legacy fixed pipeline |
| // If you are new to dear imgui, see examples/README.txt and documentation at the top of imgui.cpp. |
| |
| #include "imgui.h" |
| #include "../imgui_impl_osx.h" |
| #include "../imgui_impl_opengl2.h" |
| #include <stdio.h> |
| #import <Cocoa/Cocoa.h> |
| #import <OpenGL/gl.h> |
| #import <OpenGL/glu.h> |
| |
| //----------------------------------------------------------------------------------- |
| // ImGuiExampleView |
| //----------------------------------------------------------------------------------- |
| |
| @interface ImGuiExampleView : NSOpenGLView |
| { |
| NSTimer* animationTimer; |
| } |
| @end |
| |
| @implementation ImGuiExampleView |
| |
| -(void)animationTimerFired:(NSTimer*)timer |
| { |
| [self setNeedsDisplay:YES]; |
| } |
| |
| -(void)prepareOpenGL |
| { |
| [super prepareOpenGL]; |
| |
| #ifndef DEBUG |
| GLint swapInterval = 1; |
| [[self openGLContext] setValues:&swapInterval forParameter:NSOpenGLCPSwapInterval]; |
| if (swapInterval == 0) |
| NSLog(@"Error: Cannot set swap interval."); |
| #endif |
| } |
| |
| -(void)updateAndDrawDemoView |
| { |
| // Start the Dear ImGui frame |
| ImGui_ImplOpenGL2_NewFrame(); |
| ImGui_ImplOSX_NewFrame(self); |
| ImGui::NewFrame(); |
| |
| // Global data for the demo |
| static bool show_demo_window = true; |
| static bool show_another_window = false; |
| static ImVec4 clear_color = ImVec4(0.45f, 0.55f, 0.60f, 1.00f); |
| |
| // 1. Show the big demo window (Most of the sample code is in ImGui::ShowDemoWindow()! You can browse its code to learn more about Dear ImGui!). |
| if (show_demo_window) |
| ImGui::ShowDemoWindow(&show_demo_window); |
| |
| // 2. Show a simple window that we create ourselves. We use a Begin/End pair to created a named window. |
| { |
| static float f = 0.0f; |
| static int counter = 0; |
| |
| ImGui::Begin("Hello, world!"); // Create a window called "Hello, world!" and append into it. |
| |
| ImGui::Text("This is some useful text."); // Display some text (you can use a format strings too) |
| ImGui::Checkbox("Demo Window", &show_demo_window); // Edit bools storing our window open/close state |
| ImGui::Checkbox("Another Window", &show_another_window); |
| |
| ImGui::SliderFloat("float", &f, 0.0f, 1.0f); // Edit 1 float using a slider from 0.0f to 1.0f |
| ImGui::ColorEdit3("clear color", (float*)&clear_color); // Edit 3 floats representing a color |
| |
| if (ImGui::Button("Button")) // Buttons return true when clicked (most widgets return true when edited/activated) |
| counter++; |
| ImGui::SameLine(); |
| ImGui::Text("counter = %d", counter); |
| |
| ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate); |
| ImGui::End(); |
| } |
| |
| // 3. Show another simple window. |
| if (show_another_window) |
| { |
| ImGui::Begin("Another Window", &show_another_window); // Pass a pointer to our bool variable (the window will have a closing button that will clear the bool when clicked) |
| ImGui::Text("Hello from another window!"); |
| if (ImGui::Button("Close Me")) |
| show_another_window = false; |
| ImGui::End(); |
| } |
| |
| // Rendering |
| ImGui::Render(); |
| [[self openGLContext] makeCurrentContext]; |
| |
| ImDrawData* draw_data = ImGui::GetDrawData(); |
| GLsizei width = (GLsizei)(draw_data->DisplaySize.x * draw_data->FramebufferScale.x); |
| GLsizei height = (GLsizei)(draw_data->DisplaySize.y * draw_data->FramebufferScale.y); |
| glViewport(0, 0, width, height); |
| |
| glClearColor(clear_color.x, clear_color.y, clear_color.z, clear_color.w); |
| glClear(GL_COLOR_BUFFER_BIT); |
| ImGui_ImplOpenGL2_RenderDrawData(draw_data); |
| |
| // Present |
| [[self openGLContext] flushBuffer]; |
| |
| if (!animationTimer) |
| animationTimer = [NSTimer scheduledTimerWithTimeInterval:0.017 target:self selector:@selector(animationTimerFired:) userInfo:nil repeats:YES]; |
| } |
| |
| -(void)reshape |
| { |
| [[self openGLContext] update]; |
| [self updateAndDrawDemoView]; |
| } |
| |
| -(void)drawRect:(NSRect)bounds |
| { |
| [self updateAndDrawDemoView]; |
| } |
| |
| -(BOOL)acceptsFirstResponder |
| { |
| return (YES); |
| } |
| |
| -(BOOL)becomeFirstResponder |
| { |
| return (YES); |
| } |
| |
| -(BOOL)resignFirstResponder |
| { |
| return (YES); |
| } |
| |
| // Flip coordinate system upside down on Y |
| -(BOOL)isFlipped |
| { |
| return (YES); |
| } |
| |
| -(void)dealloc |
| { |
| animationTimer = nil; |
| } |
| |
| // Forward Mouse/Keyboard events to dear imgui OSX back-end. It returns true when imgui is expecting to use the event. |
| -(void)keyUp:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); } |
| -(void)keyDown:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); } |
| -(void)flagsChanged:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); } |
| -(void)mouseDown:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); } |
| -(void)mouseUp:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); } |
| -(void)scrollWheel:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); } |
| |
| @end |
| |
| //----------------------------------------------------------------------------------- |
| // ImGuiExampleAppDelegate |
| //----------------------------------------------------------------------------------- |
| |
| @interface ImGuiExampleAppDelegate : NSObject <NSApplicationDelegate> |
| @property (nonatomic, readonly) NSWindow* window; |
| @end |
| |
| @implementation ImGuiExampleAppDelegate |
| @synthesize window = _window; |
| |
| -(BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)theApplication |
| { |
| return YES; |
| } |
| |
| -(NSWindow*)window |
| { |
| if (_window != nil) |
| return (_window); |
| |
| NSRect viewRect = NSMakeRect(100.0, 100.0, 100.0 + 1280.0, 100 + 720.0); |
| |
| _window = [[NSWindow alloc] initWithContentRect:viewRect styleMask:NSWindowStyleMaskTitled|NSWindowStyleMaskMiniaturizable|NSWindowStyleMaskResizable|NSWindowStyleMaskClosable backing:NSBackingStoreBuffered defer:YES]; |
| [_window setTitle:@"Dear ImGui OSX+OpenGL2 Example"]; |
| [_window setOpaque:YES]; |
| [_window makeKeyAndOrderFront:NSApp]; |
| |
| return (_window); |
| } |
| |
| -(void)setupMenu |
| { |
| NSMenu* mainMenuBar = [[NSMenu alloc] init]; |
| NSMenu* appMenu; |
| NSMenuItem* menuItem; |
| |
| appMenu = [[NSMenu alloc] initWithTitle:@"Dear ImGui OSX+OpenGL2 Example"]; |
| menuItem = [appMenu addItemWithTitle:@"Quit Dear ImGui OSX+OpenGL2 Example" action:@selector(terminate:) keyEquivalent:@"q"]; |
| [menuItem setKeyEquivalentModifierMask:NSEventModifierFlagCommand]; |
| |
| menuItem = [[NSMenuItem alloc] init]; |
| [menuItem setSubmenu:appMenu]; |
| |
| [mainMenuBar addItem:menuItem]; |
| |
| appMenu = nil; |
| [NSApp setMainMenu:mainMenuBar]; |
| } |
| |
| -(void)dealloc |
| { |
| _window = nil; |
| } |
| |
| -(void)applicationDidFinishLaunching:(NSNotification *)aNotification |
| { |
| // Make the application a foreground application (else it won't receive keyboard events) |
| ProcessSerialNumber psn = {0, kCurrentProcess}; |
| TransformProcessType(&psn, kProcessTransformToForegroundApplication); |
| |
| // Menu |
| [self setupMenu]; |
| |
| NSOpenGLPixelFormatAttribute attrs[] = |
| { |
| NSOpenGLPFADoubleBuffer, |
| NSOpenGLPFADepthSize, 32, |
| 0 |
| }; |
| |
| NSOpenGLPixelFormat* format = [[NSOpenGLPixelFormat alloc] initWithAttributes:attrs]; |
| ImGuiExampleView* view = [[ImGuiExampleView alloc] initWithFrame:self.window.frame pixelFormat:format]; |
| format = nil; |
| #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1070 |
| if (floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_6) |
| [view setWantsBestResolutionOpenGLSurface:YES]; |
| #endif // MAC_OS_X_VERSION_MAX_ALLOWED >= 1070 |
| [self.window setContentView:view]; |
| |
| if ([view openGLContext] == nil) |
| NSLog(@"No OpenGL Context!"); |
| |
| // Setup Dear ImGui context |
| IMGUI_CHECKVERSION(); |
| ImGui::CreateContext(); |
| ImGuiIO& io = ImGui::GetIO(); (void)io; |
| //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls |
| |
| // Setup Dear ImGui style |
| ImGui::StyleColorsDark(); |
| //ImGui::StyleColorsClassic(); |
| |
| // Setup Platform/Renderer bindings |
| ImGui_ImplOSX_Init(); |
| ImGui_ImplOpenGL2_Init(); |
| |
| // Load Fonts |
| // - If no fonts are loaded, dear imgui will use the default font. You can also load multiple fonts and use ImGui::PushFont()/PopFont() to select them. |
| // - AddFontFromFileTTF() will return the ImFont* so you can store it if you need to select the font among multiple. |
| // - If the file cannot be loaded, the function will return NULL. Please handle those errors in your application (e.g. use an assertion, or display an error and quit). |
| // - The fonts will be rasterized at a given size (w/ oversampling) and stored into a texture when calling ImFontAtlas::Build()/GetTexDataAsXXXX(), which ImGui_ImplXXXX_NewFrame below will call. |
| // - Read 'misc/fonts/README.txt' for more instructions and details. |
| // - Remember that in C/C++ if you want to include a backslash \ in a string literal you need to write a double backslash \\ ! |
| //io.Fonts->AddFontDefault(); |
| //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Roboto-Medium.ttf", 16.0f); |
| //io.Fonts->AddFontFromFileTTF("../../misc/fonts/Cousine-Regular.ttf", 15.0f); |
| //io.Fonts->AddFontFromFileTTF("../../misc/fonts/DroidSans.ttf", 16.0f); |
| //io.Fonts->AddFontFromFileTTF("../../misc/fonts/ProggyTiny.ttf", 10.0f); |
| //ImFont* font = io.Fonts->AddFontFromFileTTF("c:\\Windows\\Fonts\\ArialUni.ttf", 18.0f, NULL, io.Fonts->GetGlyphRangesJapanese()); |
| //IM_ASSERT(font != NULL); |
| } |
| |
| @end |
| |
| int main(int argc, const char* argv[]) |
| { |
| @autoreleasepool |
| { |
| NSApp = [NSApplication sharedApplication]; |
| ImGuiExampleAppDelegate* delegate = [[ImGuiExampleAppDelegate alloc] init]; |
| [[NSApplication sharedApplication] setDelegate:delegate]; |
| [NSApp run]; |
| } |
| return NSApplicationMain(argc, argv); |
| } |