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Diffstat (limited to '3rdparty/imgui/examples/example_apple_opengl2/main.mm')
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1 files changed, 281 insertions, 0 deletions
diff --git a/3rdparty/imgui/examples/example_apple_opengl2/main.mm b/3rdparty/imgui/examples/example_apple_opengl2/main.mm new file mode 100644 index 00000000..5eb8b19b --- /dev/null +++ b/3rdparty/imgui/examples/example_apple_opengl2/main.mm @@ -0,0 +1,281 @@ +// 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]; + + ImGuiIO& io = ImGui::GetIO(); + GLsizei width = (GLsizei)(io.DisplaySize.x * io.DisplayFramebufferScale.x); + GLsizei height = (GLsizei)(io.DisplaySize.y * io.DisplayFramebufferScale.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(ImGui::GetDrawData()); + + // 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 binding + IMGUI_CHECKVERSION(); + ImGui::CreateContext(); + ImGuiIO& io = ImGui::GetIO(); (void)io; + //io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls + + ImGui_ImplOSX_Init(); + ImGui_ImplOpenGL2_Init(); + + // Setup style + ImGui::StyleColorsDark(); + //ImGui::StyleColorsClassic(); + + // 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); +} |