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Examples: Bring code of example_apple_metal and example_apple_opengl2 closer to each other. (#1873, #3543)

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rokups
2020-11-12 13:47:31 +02:00
committed by ocornut
parent 0aeb978e61
commit 88f4c1321a
2 changed files with 239 additions and 290 deletions
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203
examples/example_apple_opengl2/main.mm
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@ -2,30 +2,25 @@
// If you are new to Dear ImGui, read documentation from the docs/ folder + read the top of imgui.cpp.
// Read online: https://github.com/ocornut/imgui/tree/master/docs
#include "imgui.h"
#include "../../backends/imgui_impl_osx.h"
#include "../../backends/imgui_impl_opengl2.h"
#include <stdio.h>
#import <Cocoa/Cocoa.h>
#import <OpenGL/gl.h>
#import <OpenGL/glu.h>
#include "imgui.h"
#include "imgui_impl_opengl2.h"
#include "imgui_impl_osx.h"
//-----------------------------------------------------------------------------------
// ImGuiExampleView
// AppView
//-----------------------------------------------------------------------------------
@interface ImGuiExampleView : NSOpenGLView
@interface AppView : NSOpenGLView
{
NSTimer* animationTimer;
}
@end
@implementation ImGuiExampleView
-(void)animationTimerFired:(NSTimer*)timer
{
[self setNeedsDisplay:YES];
}
@implementation AppView
-(void)prepareOpenGL
{
@ -39,11 +34,54 @@
#endif
}
-(void)initialize
{
// Some events do not raise callbacks of AppView in some circumstances (for example when CMD key is held down).
// This monitor taps into global event stream and captures these events.
NSEventMask eventMask = NSEventMaskKeyDown | NSEventMaskKeyUp | NSEventMaskFlagsChanged;
[NSEvent addLocalMonitorForEventsMatchingMask:eventMask handler:^NSEvent * _Nullable(NSEvent *event)
{
ImGui_ImplOSX_HandleEvent(event, self);
return event;
}];
// Setup Dear ImGui context
// FIXME: This example doesn't have proper cleanup...
IMGUI_CHECKVERSION();
ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO(); (void)io;
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls
// Setup Dear ImGui style
ImGui::StyleColorsDark();
//ImGui::StyleColorsClassic();
// Setup Platform/Renderer backends
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 'docs/FONTS.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);
}
-(void)updateAndDrawDemoView
{
// Start the Dear ImGui frame
ImGui_ImplOpenGL2_NewFrame();
ImGui_ImplOSX_NewFrame(self);
ImGui_ImplOpenGL2_NewFrame();
ImGui_ImplOSX_NewFrame(self);
ImGui::NewFrame();
// Our state (make them static = more or less global) as a convenience to keep the example terse.
@ -88,18 +126,18 @@
ImGui::End();
}
// Rendering
ImGui::Render();
[[self openGLContext] makeCurrentContext];
// Rendering
ImGui::Render();
ImDrawData* draw_data = ImGui::GetDrawData();
[[self openGLContext] makeCurrentContext];
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.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
glClear(GL_COLOR_BUFFER_BIT);
glClearColor(clear_color.x * clear_color.w, clear_color.y * clear_color.w, clear_color.z * clear_color.w, clear_color.w);
glClear(GL_COLOR_BUFFER_BIT);
ImGui_ImplOpenGL2_RenderDrawData(draw_data);
ImGui_ImplOpenGL2_RenderDrawData(draw_data);
// Present
[[self openGLContext] flushBuffer];
@ -108,38 +146,20 @@
animationTimer = [NSTimer scheduledTimerWithTimeInterval:0.017 target:self selector:@selector(animationTimerFired:) userInfo:nil repeats:YES];
}
-(void)reshape
{
[[self openGLContext] update];
[self updateAndDrawDemoView];
}
-(void)reshape { [[self openGLContext] update]; [self updateAndDrawDemoView]; }
-(void)drawRect:(NSRect)bounds { [self updateAndDrawDemoView]; }
-(void)animationTimerFired:(NSTimer*)timer { [self setNeedsDisplay:YES]; }
-(BOOL)acceptsFirstResponder { return (YES); }
-(BOOL)becomeFirstResponder { return (YES); }
-(BOOL)resignFirstResponder { return (YES); }
-(void)dealloc { animationTimer = nil; }
-(void)drawRect:(NSRect)bounds
{
[self updateAndDrawDemoView];
}
-(BOOL)acceptsFirstResponder
{
return (YES);
}
-(BOOL)becomeFirstResponder
{
return (YES);
}
-(BOOL)resignFirstResponder
{
return (YES);
}
-(void)dealloc
{
animationTimer = nil;
}
//-----------------------------------------------------------------------------------
// Input processing
//-----------------------------------------------------------------------------------
// Forward Mouse/Keyboard events to Dear ImGui OSX backend.
// Other events are registered via addLocalMonitorForEventsMatchingMask()
-(void)mouseDown:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); }
-(void)rightMouseDown:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); }
-(void)otherMouseDown:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); }
@ -147,23 +167,24 @@
-(void)rightMouseUp:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); }
-(void)otherMouseUp:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); }
-(void)mouseMoved:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); }
-(void)rightMouseMoved:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); }
-(void)otherMouseMoved:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); }
-(void)mouseDragged:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); }
-(void)rightMouseMoved:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); }
-(void)rightMouseDragged:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); }
-(void)otherMouseMoved:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); }
-(void)otherMouseDragged:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); }
-(void)scrollWheel:(NSEvent *)event { ImGui_ImplOSX_HandleEvent(event, self); }
@end
//-----------------------------------------------------------------------------------
// ImGuiExampleAppDelegate
// AppDelegate
//-----------------------------------------------------------------------------------
@interface ImGuiExampleAppDelegate : NSObject <NSApplicationDelegate>
@interface AppDelegate : NSObject <NSApplicationDelegate>
@property (nonatomic, readonly) NSWindow* window;
@end
@implementation ImGuiExampleAppDelegate
@implementation AppDelegate
@synthesize window = _window;
-(BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)theApplication
@ -189,7 +210,7 @@
-(void)setupMenu
{
NSMenu* mainMenuBar = [[NSMenu alloc] init];
NSMenu* mainMenuBar = [[NSMenu alloc] init];
NSMenu* appMenu;
NSMenuItem* menuItem;
@ -213,11 +234,11 @@
-(void)applicationDidFinishLaunching:(NSNotification *)aNotification
{
// Make the application a foreground application (else it won't receive keyboard events)
ProcessSerialNumber psn = {0, kCurrentProcess};
TransformProcessType(&psn, kProcessTransformToForegroundApplication);
// Make the application a foreground application (else it won't receive keyboard events)
ProcessSerialNumber psn = {0, kCurrentProcess};
TransformProcessType(&psn, kProcessTransformToForegroundApplication);
// Menu
// Menu
[self setupMenu];
NSOpenGLPixelFormatAttribute attrs[] =
@ -228,7 +249,7 @@
};
NSOpenGLPixelFormat* format = [[NSOpenGLPixelFormat alloc] initWithAttributes:attrs];
ImGuiExampleView* view = [[ImGuiExampleView alloc] initWithFrame:self.window.frame pixelFormat:format];
AppView* view = [[AppView alloc] initWithFrame:self.window.frame pixelFormat:format];
format = nil;
#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1070
if (floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_6)
@ -239,57 +260,23 @@
if ([view openGLContext] == nil)
NSLog(@"No OpenGL Context!");
// Some events do not raise callbacks of ImGuiExampleView in some circumstances (for example when CMD key is held down).
// This monitor taps into global event stream and captures these events.
NSEventMask eventMask = NSEventMaskKeyDown | NSEventMaskKeyUp | NSEventMaskFlagsChanged | NSEventTypeScrollWheel;
[NSEvent addLocalMonitorForEventsMatchingMask:eventMask handler:^NSEvent * _Nullable(NSEvent *event)
{
ImGui_ImplOSX_HandleEvent(event, view);
return event;
}];
// Setup Dear ImGui context
// FIXME: This example doesn't have proper cleanup...
IMGUI_CHECKVERSION();
ImGui::CreateContext();
ImGuiIO& io = ImGui::GetIO(); (void)io;
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard; // Enable Keyboard Controls
//io.ConfigFlags |= ImGuiConfigFlags_NavEnableGamepad; // Enable Gamepad Controls
// Setup Dear ImGui style
ImGui::StyleColorsDark();
//ImGui::StyleColorsClassic();
// Setup Platform/Renderer backends
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 'docs/FONTS.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);
[view initialize];
}
@end
//-----------------------------------------------------------------------------------
// Application main() function
//-----------------------------------------------------------------------------------
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);
@autoreleasepool
{
NSApp = [NSApplication sharedApplication];
AppDelegate* delegate = [[AppDelegate alloc] init];
[[NSApplication sharedApplication] setDelegate:delegate];
[NSApp run];
}
return NSApplicationMain(argc, argv);
}