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Examples: Apple: Consolidated example_apple_metal to reduce class and file count (#1873, #3543)

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Warren Moore 2020-10-18 13:24:35 -07:00 committed by ocornut
parent 5292320110
commit bca4749346
16 changed files with 444 additions and 566 deletions
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1
docs/CHANGELOG.txt
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@ -62,6 +62,7 @@ Other Changes:
- Backends: OpenGL3: Use glGetString(GL_VERSION) query instead of glGetIntegerv(GL_MAJOR_VERSION, ...)
when the later returns zero (e.g. Desktop GL 2.x). (#3530) [@xndcn]
- Backends: OpenGL3: Backup and restore GL_PRIMITIVE_RESTART state. (#3544) [@Xipiryon]
- Examples: Apple+Metal: Consolidated/simplified to get closer to other examples. (#3543) [@warrenm]
- Docs: Split examples/README.txt into docs/BACKENDS.md and docs/EXAMPLES.md improved them.
- Docs: Consistently renamed all occurences of "binding" and "back-end" to "backend" in comments and docs.

18
examples/example_apple_metal/Shared/AppDelegate.h
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@ -1,18 +0,0 @@
#import <TargetConditionals.h>
#if TARGET_OS_IPHONE
#import <UIKit/UIKit.h>
@interface AppDelegate : UIResponder <UIApplicationDelegate>
@property (strong, nonatomic) UIWindow *window;
@end
#else
#import <Cocoa/Cocoa.h>
@interface AppDelegate : NSObject <NSApplicationDelegate>
@end
#endif

11
examples/example_apple_metal/Shared/AppDelegate.m
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@ -1,11 +0,0 @@
#import "AppDelegate.h"
@implementation AppDelegate
#if TARGET_OS_OSX
- (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)sender {
return YES;
}
#endif
@end

8
examples/example_apple_metal/Shared/Renderer.h
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@ -1,8 +0,0 @@
#import <MetalKit/MetalKit.h>
@interface Renderer : NSObject <MTKViewDelegate>
-(nonnull instancetype)initWithView:(nonnull MTKView *)view;
@end

154
examples/example_apple_metal/Shared/Renderer.mm
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@ -1,154 +0,0 @@
#import "Renderer.h"
#import <Metal/Metal.h>
#include "imgui.h"
#include "imgui_impl_metal.h"
#if TARGET_OS_OSX
#include "imgui_impl_osx.h"
#endif
@interface Renderer ()
@property (nonatomic, strong) id <MTLDevice> device;
@property (nonatomic, strong) id <MTLCommandQueue> commandQueue;
@end
@implementation Renderer
-(nonnull instancetype)initWithView:(nonnull MTKView*)view;
{
self = [super init];
if(self)
{
_device = view.device;
_commandQueue = [_device newCommandQueue];
// 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 Renderer backend
ImGui_ImplMetal_Init(_device);
// 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);
}
return self;
}
- (void)drawInMTKView:(MTKView*)view
{
ImGuiIO &io = ImGui::GetIO();
io.DisplaySize.x = view.bounds.size.width;
io.DisplaySize.y = view.bounds.size.height;
#if TARGET_OS_OSX
CGFloat framebufferScale = view.window.screen.backingScaleFactor ?: NSScreen.mainScreen.backingScaleFactor;
#else
CGFloat framebufferScale = view.window.screen.scale ?: UIScreen.mainScreen.scale;
#endif
io.DisplayFramebufferScale = ImVec2(framebufferScale, framebufferScale);
io.DeltaTime = 1 / float(view.preferredFramesPerSecond ?: 60);
id<MTLCommandBuffer> commandBuffer = [self.commandQueue commandBuffer];
// Our state (make them static = more or less global) as a convenience to keep the example terse.
static bool show_demo_window = true;
static bool show_another_window = false;
static float clear_color[4] = { 0.28f, 0.36f, 0.5f, 1.0f };
MTLRenderPassDescriptor* renderPassDescriptor = view.currentRenderPassDescriptor;
if (renderPassDescriptor != nil)
{
renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColorMake(clear_color[0], clear_color[1], clear_color[2], clear_color[3]);
// Here, you could do additional rendering work, including other passes as necessary.
id <MTLRenderCommandEncoder> renderEncoder = [commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor];
[renderEncoder pushDebugGroup:@"ImGui demo"];
// Start the Dear ImGui frame
ImGui_ImplMetal_NewFrame(renderPassDescriptor);
#if TARGET_OS_OSX
ImGui_ImplOSX_NewFrame(view);
#endif
ImGui::NewFrame();
// 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();
ImDrawData* drawData = ImGui::GetDrawData();
ImGui_ImplMetal_RenderDrawData(drawData, commandBuffer, renderEncoder);
[renderEncoder popDebugGroup];
[renderEncoder endEncoding];
[commandBuffer presentDrawable:view.currentDrawable];
}
[commandBuffer commit];
}
- (void)mtkView:(MTKView*)view drawableSizeWillChange:(CGSize)size
{
}
@end

19
examples/example_apple_metal/Shared/ViewController.h
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@ -1,19 +0,0 @@
#import <Metal/Metal.h>
#import <MetalKit/MetalKit.h>
#import "Renderer.h"
#if TARGET_OS_IPHONE
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
@end
#else
#import <Cocoa/Cocoa.h>
@interface ViewController : NSViewController
@end
#endif

153
examples/example_apple_metal/Shared/ViewController.mm
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@ -1,153 +0,0 @@
#import "ViewController.h"
#import "Renderer.h"
#include "imgui.h"
#if TARGET_OS_OSX
#include "imgui_impl_osx.h"
#endif
@interface ViewController ()
@property (nonatomic, readonly) MTKView *mtkView;
@property (nonatomic, strong) Renderer *renderer;
@end
@implementation ViewController
- (MTKView *)mtkView {
return (MTKView *)self.view;
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.mtkView.device = MTLCreateSystemDefaultDevice();
if (!self.mtkView.device) {
NSLog(@"Metal is not supported");
abort();
}
self.renderer = [[Renderer alloc] initWithView:self.mtkView];
[self.renderer mtkView:self.mtkView drawableSizeWillChange:self.mtkView.bounds.size];
self.mtkView.delegate = self.renderer;
#if TARGET_OS_OSX
// Add a tracking area in order to receive mouse events whenever the mouse is within the bounds of our view
NSTrackingArea *trackingArea = [[NSTrackingArea alloc] initWithRect:NSZeroRect
options:NSTrackingMouseMoved | NSTrackingInVisibleRect | NSTrackingActiveAlways
owner:self
userInfo:nil];
[self.view addTrackingArea:trackingArea];
// If we want to receive key events, we either need to be in the responder chain of the key view,
// or else we can install a local monitor. The consequence of this heavy-handed approach is that
// we receive events for all controls, not just Dear ImGui widgets. If we had native controls in our
// window, we'd want to be much more careful than just ingesting the complete event stream, though we
// do make an effort to be good citizens by passing along events when Dear ImGui doesn't want to capture.
NSEventMask eventMask = NSEventMaskKeyDown | NSEventMaskKeyUp | NSEventMaskFlagsChanged | NSEventTypeScrollWheel;
[NSEvent addLocalMonitorForEventsMatchingMask:eventMask handler:^NSEvent * _Nullable(NSEvent *event) {
BOOL wantsCapture = ImGui_ImplOSX_HandleEvent(event, self.view);
if (event.type == NSEventTypeKeyDown && wantsCapture) {
return nil;
} else {
return event;
}
}];
ImGui_ImplOSX_Init();
#endif
}
#if TARGET_OS_OSX
- (void)mouseMoved:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)mouseDown:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)rightMouseDown:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)otherMouseDown:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)mouseUp:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)rightMouseUp:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)otherMouseUp:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)mouseDragged:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)rightMouseDragged:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)otherMouseDragged:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)scrollWheel:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
#elif TARGET_OS_IOS
// This touch mapping is super cheesy/hacky. We treat any touch on the screen
// as if it were a depressed left mouse button, and we don't bother handling
// multitouch correctly at all. This causes the "cursor" to behave very erratically
// when there are multiple active touches. But for demo purposes, single-touch
// interaction actually works surprisingly well.
- (void)updateIOWithTouchEvent:(UIEvent *)event {
UITouch *anyTouch = event.allTouches.anyObject;
CGPoint touchLocation = [anyTouch locationInView:self.view];
ImGuiIO &io = ImGui::GetIO();
io.MousePos = ImVec2(touchLocation.x, touchLocation.y);
BOOL hasActiveTouch = NO;
for (UITouch *touch in event.allTouches) {
if (touch.phase != UITouchPhaseEnded && touch.phase != UITouchPhaseCancelled) {
hasActiveTouch = YES;
break;
}
}
io.MouseDown[0] = hasActiveTouch;
}
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
[self updateIOWithTouchEvent:event];
}
- (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
[self updateIOWithTouchEvent:event];
}
- (void)touchesCancelled:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
[self updateIOWithTouchEvent:event];
}
- (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
[self updateIOWithTouchEvent:event];
}
#endif
@end

22
examples/example_apple_metal/Shared/main.m
View File

@ -1,22 +0,0 @@
#import <TargetConditionals.h>
#if TARGET_OS_IPHONE
#import <UIKit/UIKit.h>
#import "AppDelegate.h"
int main(int argc, char * argv[]) {
@autoreleasepool {
return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
}
}
#else
#import <Cocoa/Cocoa.h>
int main(int argc, const char * argv[]) {
return NSApplicationMain(argc, argv);
}
#endif

155
examples/example_apple_metal/example_apple_metal.xcodeproj/project.pbxproj
View File

@ -9,27 +9,19 @@
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@ -41,31 +33,23 @@
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83BBEA0220EB54E700295997 /* imgui_demo.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = imgui_demo.cpp; path = ../../imgui_demo.cpp; sourceTree = "<group>"; };
@ -78,7 +62,7 @@
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buildActionMask = 2147483647;
files = (
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8309BD8F253CCAAA0045E2A1 /* UIKit.framework in Frameworks */,
83BBE9E720EB46BD00295997 /* MetalKit.framework in Frameworks */,
83BBE9E520EB46B900295997 /* Metal.framework in Frameworks */,
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@ -88,7 +72,7 @@
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buildActionMask = 2147483647;
files = (
83BBE9EF20EB471C00295997 /* ModelIO.framework in Frameworks */,
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83BBE9EC20EB471700295997 /* MetalKit.framework in Frameworks */,
83BBE9ED20EB471700295997 /* Metal.framework in Frameworks */,
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@ -101,32 +85,12 @@
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children = (
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8307E7DB20E9F9C900473790 /* macOS */,
8309BD9E253CCBA70045E2A1 /* example */,
8307E7C520E9F9C900473790 /* Products */,
83BBE9E320EB46B800295997 /* Frameworks */,
);
sourceTree = "<group>";
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8307E7BA20E9F9C700473790 /* Shared */ = {
isa = PBXGroup;
children = (
83BBE9FC20EB54D800295997 /* imgui_impl_metal.h */,
83BBE9FD20EB54D800295997 /* imgui_impl_metal.mm */,
836D2A2C20EE208D0098E909 /* imgui_impl_osx.h */,
836D2A2D20EE208E0098E909 /* imgui_impl_osx.mm */,
8307E7DC20E9F9C900473790 /* AppDelegate.h */,
8307E7DD20E9F9C900473790 /* AppDelegate.m */,
8307E7BB20E9F9C700473790 /* Renderer.h */,
8307E7BC20E9F9C700473790 /* Renderer.mm */,
8307E7CA20E9F9C900473790 /* ViewController.h */,
8307E7CB20E9F9C900473790 /* ViewController.mm */,
8307E7E620E9F9C900473790 /* main.m */,
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sourceTree = "<group>";
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8307E7C520E9F9C900473790 /* Products */ = {
isa = PBXGroup;
children = (
@ -136,22 +100,30 @@
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8307E7C620E9F9C900473790 /* iOS */ = {
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8309BDF6253CDAAE0045E2A1 /* iOS */,
8309BDF9253CDAAE0045E2A1 /* macOS */,
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name = example;
sourceTree = "<group>";
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8309BDF6253CDAAE0045E2A1 /* iOS */ = {
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8309BDF7253CDAAE0045E2A1 /* LaunchScreen.storyboard */,
8309BDF8253CDAAE0045E2A1 /* Info-iOS.plist */,
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path = iOS;
sourceTree = "<group>";
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8307E7DB20E9F9C900473790 /* macOS */ = {
8309BDF9253CDAAE0045E2A1 /* macOS */ = {
isa = PBXGroup;
children = (
8307E7E220E9F9C900473790 /* Main.storyboard */,
8307E7E520E9F9C900473790 /* Info-macOS.plist */,
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8309BDFB253CDAAE0045E2A1 /* Info-macOS.plist */,
);
path = macOS;
sourceTree = "<group>";
@ -159,6 +131,8 @@
83BBE9E320EB46B800295997 /* Frameworks */ = {
isa = PBXGroup;
children = (
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8309BD8E253CCAAA0045E2A1 /* UIKit.framework */,
83BBE9EE20EB471C00295997 /* ModelIO.framework */,
83BBE9EB20EB471700295997 /* Metal.framework */,
83BBE9EA20EB471700295997 /* MetalKit.framework */,
@ -172,6 +146,8 @@
83BBE9F020EB544400295997 /* imgui */ = {
isa = PBXGroup;
children = (
8309BDB5253CCC9D0045E2A1 /* imgui_impl_metal.mm */,
8309BDB6253CCC9D0045E2A1 /* imgui_impl_osx.mm */,
83BBEA0420EB54E700295997 /* imconfig.h */,
83BBEA0320EB54E700295997 /* imgui.cpp */,
83BBEA0020EB54E700295997 /* imgui.h */,
@ -226,7 +202,7 @@
8307E7B620E9F9C700473790 /* Project object */ = {
isa = PBXProject;
attributes = {
LastUpgradeCheck = 0940;
LastUpgradeCheck = 1200;
ORGANIZATIONNAME = "Warren Moore";
TargetAttributes = {
8307E7C320E9F9C900473790 = {
@ -263,9 +239,7 @@
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8307E7CF20E9F9C900473790 /* Main.storyboard in Resources */,
836D2A3020EE4A180098E909 /* Default-568h@2x.png in Resources */,
8309BDFC253CDAB30045E2A1 /* LaunchScreen.storyboard in Resources */,
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@ -273,7 +247,7 @@
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buildActionMask = 2147483647;
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8307E7E420E9F9C900473790 /* Main.storyboard in Resources */,
8309BE04253CDAB60045E2A1 /* MainMenu.storyboard in Resources */,
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runOnlyForDeploymentPostprocessing = 0;
};
@ -284,15 +258,12 @@
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buildActionMask = 2147483647;
files = (
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8307E7CC20E9F9C900473790 /* ViewController.mm in Sources */,
8309BDBB253CCCAD0045E2A1 /* imgui_impl_metal.mm in Sources */,
83BBEA0520EB54E700295997 /* imgui_draw.cpp in Sources */,
83BBE9DF20EB40AE00295997 /* AppDelegate.m in Sources */,
83BBEA0920EB54E700295997 /* imgui.cpp in Sources */,
83BBEA0720EB54E700295997 /* imgui_demo.cpp in Sources */,
83BBE9FE20EB54D800295997 /* imgui_impl_metal.mm in Sources */,
07A82ED82139413D0078D120 /* imgui_widgets.cpp in Sources */,
83BBE9DE20EB3FFC00295997 /* main.m in Sources */,
8309BDA5253CCC070045E2A1 /* main.mm in Sources */,
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runOnlyForDeploymentPostprocessing = 0;
};
@ -300,40 +271,18 @@
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buildActionMask = 2147483647;
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83BBE9E020EB42D000295997 /* ViewController.mm in Sources */,
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8309BDBF253CCCB60045E2A1 /* imgui_impl_osx.mm in Sources */,
83BBEA0620EB54E700295997 /* imgui_draw.cpp in Sources */,
07A82ED92139418F0078D120 /* imgui_widgets.cpp in Sources */,
8307E7E720E9F9C900473790 /* main.m in Sources */,
83BBEA0A20EB54E700295997 /* imgui.cpp in Sources */,
83BBEA0820EB54E700295997 /* imgui_demo.cpp in Sources */,
83BBE9FF20EB54D800295997 /* imgui_impl_metal.mm in Sources */,
836D2A2E20EE208E0098E909 /* imgui_impl_osx.mm in Sources */,
8307E7DE20E9F9C900473790 /* AppDelegate.m in Sources */,
8309BDA8253CCC080045E2A1 /* main.mm in Sources */,
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sourceTree = "<group>";
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8307E7E220E9F9C900473790 /* Main.storyboard */ = {
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children = (
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sourceTree = "<group>";
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/* Begin XCBuildConfiguration section */
8307E7EE20E9F9C900473790 /* Debug */ = {
isa = XCBuildConfiguration;
@ -361,6 +310,7 @@
CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
CLANG_WARN_STRICT_PROTOTYPES = YES;
CLANG_WARN_SUSPICIOUS_MOVE = YES;
@ -416,6 +366,7 @@
CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
CLANG_WARN_OBJC_LITERAL_CONVERSION = YES;
CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
CLANG_WARN_STRICT_PROTOTYPES = YES;
CLANG_WARN_SUSPICIOUS_MOVE = YES;
@ -451,6 +402,7 @@
PRODUCT_NAME = example_apple_metal;
SDKROOT = iphoneos;
TARGETED_DEVICE_FAMILY = "1,2";
USER_HEADER_SEARCH_PATHS = "$(SRCROOT)/../../**";
};
name = Debug;
};
@ -467,6 +419,7 @@
PRODUCT_NAME = example_apple_metal;
SDKROOT = iphoneos;
TARGETED_DEVICE_FAMILY = "1,2";
USER_HEADER_SEARCH_PATHS = "$(SRCROOT)/../../**";
VALIDATE_PRODUCT = YES;
};
name = Release;
@ -484,6 +437,7 @@
PRODUCT_BUNDLE_IDENTIFIER = "org.imgui.example.apple-metal-macos";
PRODUCT_NAME = example_apple_metal;
SDKROOT = macosx;
USER_HEADER_SEARCH_PATHS = "$(SRCROOT)/../../**";
};
name = Debug;
};
@ -500,6 +454,7 @@
PRODUCT_BUNDLE_IDENTIFIER = "org.imgui.example.apple-metal-macos";
PRODUCT_NAME = example_apple_metal;
SDKROOT = macosx;
USER_HEADER_SEARCH_PATHS = "$(SRCROOT)/../../**";
};
name = Release;
};

28
examples/example_apple_metal/iOS/Base.lproj/Main.storyboard
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@ -1,28 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14113" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="BV1-FR-VrT">
<device id="retina4_7" orientation="portrait">
<adaptation id="fullscreen"/>
</device>
<dependencies>
<deployment identifier="iOS"/>
<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14088"/>
<capability name="Safe area layout guides" minToolsVersion="9.0"/>
<capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
</dependencies>
<scenes>
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<scene sceneID="tXr-a1-R10">
<objects>
<viewController id="BV1-FR-VrT" customClass="ViewController" sceneMemberID="viewController">
<view key="view" contentMode="scaleToFill" id="3se-qz-xqx" customClass="MTKView">
<rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
<color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<viewLayoutGuide key="safeArea" id="BKg-qs-eN0"/>
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</viewController>
<placeholder placeholderIdentifier="IBFirstResponder" id="SZV-WD-TEh" sceneMemberID="firstResponder"/>
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</scenes>
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examples/example_apple_metal/iOS/Default-568h@2x.png
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4
examples/example_apple_metal/iOS/Info-iOS.plist
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@ -21,9 +21,7 @@
<key>LSRequiresIPhoneOS</key>
<true/>
<key>UILaunchStoryboardName</key>
<string>Launch Screen</string>
<key>UIMainStoryboardFile</key>
<string>Main</string>
<string>LaunchScreen</string>
<key>UIRequiredDeviceCapabilities</key>
<array>
<string>armv7</string>

12
examples/example_apple_metal/iOS/Launch Screen.storyboard → examples/example_apple_metal/iOS/LaunchScreen.storyboard
View File

@ -1,11 +1,9 @@
<?xml version="1.0" encoding="UTF-8"?>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14269.14" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
<device id="retina4_7" orientation="portrait">
<adaptation id="fullscreen"/>
</device>
<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="17156" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
<device id="retina6_1" orientation="portrait" appearance="light"/>
<dependencies>
<deployment identifier="iOS"/>
<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14252.5"/>
<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="17125"/>
<capability name="Safe area layout guides" minToolsVersion="9.0"/>
<capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
</dependencies>
@ -15,10 +13,10 @@
<objects>
<viewController id="01J-lp-oVM" sceneMemberID="viewController">
<view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
<rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
<rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
<color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
<viewLayoutGuide key="safeArea" id="Bcu-3y-fUS"/>
<color key="backgroundColor" red="0.27843137254901962" green="0.36078431372549019" blue="0.50196078431372548" alpha="1" colorSpace="custom" customColorSpace="displayP3"/>
</view>
</viewController>
<placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>

4
examples/example_apple_metal/macOS/Info-macOS.plist
View File

@ -22,10 +22,8 @@
<string>1</string>
<key>LSMinimumSystemVersion</key>
<string>$(MACOSX_DEPLOYMENT_TARGET)</string>
<key>NSHumanReadableCopyright</key>
<string>Copyright © 2018 Warren Moore. All rights reserved.</string>
<key>NSMainStoryboardFile</key>
<string>Main</string>
<string>MainMenu</string>
<key>NSPrincipalClass</key>
<string>NSApplication</string>
</dict>

43
examples/example_apple_metal/macOS/Base.lproj/Main.storyboard → examples/example_apple_metal/macOS/MainMenu.storyboard
View File

@ -1,9 +1,8 @@
<?xml version="1.0" encoding="UTF-8"?>
<document type="com.apple.InterfaceBuilder3.Cocoa.Storyboard.XIB" version="3.0" toolsVersion="14269.14" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES" initialViewController="B8D-0N-5wS">
<document type="com.apple.InterfaceBuilder3.Cocoa.Storyboard.XIB" version="3.0" toolsVersion="17156" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES">
<dependencies>
<deployment identifier="macosx"/>
<plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="14269.14"/>
<capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
<plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="17156"/>
</dependencies>
<scenes>
<!--Application-->
@ -16,8 +15,6 @@
<modifierMask key="keyEquivalentModifierMask"/>
<menu key="submenu" title="ImGui" systemMenu="apple" id="uQy-DD-JDr">
<items>
<menuItem title="Preferences…" keyEquivalent="," id="BOF-NM-1cW"/>
<menuItem isSeparatorItem="YES" id="wFC-TO-SCJ"/>
<menuItem title="Services" id="NMo-om-nkz">
<modifierMask key="keyEquivalentModifierMask"/>
<menu key="submenu" title="Services" systemMenu="services" id="hz9-B4-Xy5"/>
@ -90,41 +87,7 @@
<customObject id="YLy-65-1bz" customClass="NSFontManager"/>
<customObject id="Ady-hI-5gd" userLabel="First Responder" customClass="NSResponder" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="75" y="0.0"/>
</scene>
<!--Window Controller-->
<scene sceneID="R2V-B0-nI4">
<objects>
<windowController id="B8D-0N-5wS" sceneMemberID="viewController">
<window key="window" title="ImGui" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" releasedWhenClosed="NO" animationBehavior="default" titleVisibility="hidden" id="IQv-IB-iLA">
<windowStyleMask key="styleMask" titled="YES" closable="YES" miniaturizable="YES" resizable="YES"/>
<windowPositionMask key="initialPositionMask" leftStrut="YES" rightStrut="YES" topStrut="YES" bottomStrut="YES"/>
<rect key="contentRect" x="196" y="240" width="480" height="270"/>
<rect key="screenRect" x="0.0" y="0.0" width="1680" height="1027"/>
<connections>
<outlet property="delegate" destination="B8D-0N-5wS" id="CyC-Pq-WbN"/>
</connections>
</window>
<connections>
<segue destination="XfG-lQ-9wD" kind="relationship" relationship="window.shadowedContentViewController" id="cq2-FE-JQM"/>
</connections>
</windowController>
<customObject id="Oky-zY-oP4" userLabel="First Responder" customClass="NSResponder" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="-128" y="390"/>
</scene>
<!--View Controller-->
<scene sceneID="hIz-AP-VOD">
<objects>
<viewController id="XfG-lQ-9wD" customClass="ViewController" sceneMemberID="viewController">
<view key="view" wantsLayer="YES" id="m2S-Jp-Qdl" customClass="MTKView">
<rect key="frame" x="0.0" y="0.0" width="1280" height="720"/>
<autoresizingMask key="autoresizingMask"/>
</view>
</viewController>
<customObject id="rPt-NT-nkU" userLabel="First Responder" customClass="NSResponder" sceneMemberID="firstResponder"/>
</objects>
<point key="canvasLocation" x="205" y="1032"/>
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</scene>
</scenes>
</document>

378
examples/example_apple_metal/main.mm Normal file
View File

@ -0,0 +1,378 @@
#import <Foundation/Foundation.h>
#if TARGET_OS_OSX
#import <Cocoa/Cocoa.h>
#else
#import <UIKit/UIKit.h>
#endif
#import <Metal/Metal.h>
#import <MetalKit/MetalKit.h>
#include "imgui.h"
#include "imgui_impl_metal.h"
#if TARGET_OS_OSX
#include "imgui_impl_osx.h"
@interface ViewController : NSViewController
@end
#else
@interface ViewController : UIViewController
@end
#endif
@interface ViewController () <MTKViewDelegate>
@property (nonatomic, readonly) MTKView *mtkView;
@property (nonatomic, strong) id <MTLDevice> device;
@property (nonatomic, strong) id <MTLCommandQueue> commandQueue;
@end
@implementation ViewController
- (instancetype)initWithNibName:(nullable NSString *)nibNameOrNil bundle:(nullable NSBundle *)nibBundleOrNil {
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
_device = MTLCreateSystemDefaultDevice();
_commandQueue = [_device newCommandQueue];
if (!self.device) {
NSLog(@"Metal is not supported");
abort();
}
// 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 Renderer backend
ImGui_ImplMetal_Init(_device);
// 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);
return self;
}
- (MTKView *)mtkView {
return (MTKView *)self.view;
}
- (void)loadView {
self.view = [[MTKView alloc] initWithFrame:CGRectMake(0, 0, 1200, 720)];
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.mtkView.device = self.device;
self.mtkView.delegate = self;
#if TARGET_OS_OSX
// Add a tracking area in order to receive mouse events whenever the mouse is within the bounds of our view
NSTrackingArea *trackingArea = [[NSTrackingArea alloc] initWithRect:NSZeroRect
options:NSTrackingMouseMoved | NSTrackingInVisibleRect | NSTrackingActiveAlways
owner:self
userInfo:nil];
[self.view addTrackingArea:trackingArea];
// If we want to receive key events, we either need to be in the responder chain of the key view,
// or else we can install a local monitor. The consequence of this heavy-handed approach is that
// we receive events for all controls, not just Dear ImGui widgets. If we had native controls in our
// window, we'd want to be much more careful than just ingesting the complete event stream, though we
// do make an effort to be good citizens by passing along events when Dear ImGui doesn't want to capture.
NSEventMask eventMask = NSEventMaskKeyDown | NSEventMaskKeyUp | NSEventMaskFlagsChanged | NSEventTypeScrollWheel;
[NSEvent addLocalMonitorForEventsMatchingMask:eventMask handler:^NSEvent * _Nullable(NSEvent *event) {
BOOL wantsCapture = ImGui_ImplOSX_HandleEvent(event, self.view);
if (event.type == NSEventTypeKeyDown && wantsCapture) {
return nil;
} else {
return event;
}
}];
ImGui_ImplOSX_Init();
#endif
}
#pragma mark - Interaction
#if TARGET_OS_OSX
- (void)mouseMoved:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)mouseDown:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)rightMouseDown:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)otherMouseDown:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)mouseUp:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)rightMouseUp:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)otherMouseUp:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)mouseDragged:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)rightMouseDragged:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)otherMouseDragged:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
- (void)scrollWheel:(NSEvent *)event {
ImGui_ImplOSX_HandleEvent(event, self.view);
}
#else
// This touch mapping is super cheesy/hacky. We treat any touch on the screen
// as if it were a depressed left mouse button, and we don't bother handling
// multitouch correctly at all. This causes the "cursor" to behave very erratically
// when there are multiple active touches. But for demo purposes, single-touch
// interaction actually works surprisingly well.
- (void)updateIOWithTouchEvent:(UIEvent *)event {
UITouch *anyTouch = event.allTouches.anyObject;
CGPoint touchLocation = [anyTouch locationInView:self.view];
ImGuiIO &io = ImGui::GetIO();
io.MousePos = ImVec2(touchLocation.x, touchLocation.y);
BOOL hasActiveTouch = NO;
for (UITouch *touch in event.allTouches) {
if (touch.phase != UITouchPhaseEnded && touch.phase != UITouchPhaseCancelled) {
hasActiveTouch = YES;
break;
}
}
io.MouseDown[0] = hasActiveTouch;
}
- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
[self updateIOWithTouchEvent:event];
}
- (void)touchesMoved:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
[self updateIOWithTouchEvent:event];
}
- (void)touchesCancelled:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
[self updateIOWithTouchEvent:event];
}
- (void)touchesEnded:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {
[self updateIOWithTouchEvent:event];
}
#endif
#pragma mark - MTKViewDelegate
- (void)drawInMTKView:(MTKView*)view
{
ImGuiIO &io = ImGui::GetIO();
io.DisplaySize.x = view.bounds.size.width;
io.DisplaySize.y = view.bounds.size.height;
#if TARGET_OS_OSX
CGFloat framebufferScale = view.window.screen.backingScaleFactor ?: NSScreen.mainScreen.backingScaleFactor;
#else
CGFloat framebufferScale = view.window.screen.scale ?: UIScreen.mainScreen.scale;
#endif
io.DisplayFramebufferScale = ImVec2(framebufferScale, framebufferScale);
io.DeltaTime = 1 / float(view.preferredFramesPerSecond ?: 60);
id<MTLCommandBuffer> commandBuffer = [self.commandQueue commandBuffer];
// Our state (make them static = more or less global) as a convenience to keep the example terse.
static bool show_demo_window = true;
static bool show_another_window = false;
static float clear_color[4] = { 0.28f, 0.36f, 0.5f, 1.0f };
MTLRenderPassDescriptor* renderPassDescriptor = view.currentRenderPassDescriptor;
if (renderPassDescriptor != nil)
{
renderPassDescriptor.colorAttachments[0].clearColor = MTLClearColorMake(clear_color[0], clear_color[1], clear_color[2], clear_color[3]);
// Here, you could do additional rendering work, including other passes as necessary.
id <MTLRenderCommandEncoder> renderEncoder = [commandBuffer renderCommandEncoderWithDescriptor:renderPassDescriptor];
[renderEncoder pushDebugGroup:@"ImGui demo"];
// Start the Dear ImGui frame
ImGui_ImplMetal_NewFrame(renderPassDescriptor);
#if TARGET_OS_OSX
ImGui_ImplOSX_NewFrame(view);
#endif
ImGui::NewFrame();
// 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();
ImDrawData* drawData = ImGui::GetDrawData();
ImGui_ImplMetal_RenderDrawData(drawData, commandBuffer, renderEncoder);
[renderEncoder popDebugGroup];
[renderEncoder endEncoding];
[commandBuffer presentDrawable:view.currentDrawable];
}
[commandBuffer commit];
}
- (void)mtkView:(MTKView*)view drawableSizeWillChange:(CGSize)size
{
}
@end
#pragma mark - Application Delegate
#if TARGET_OS_OSX
@interface AppDelegate : NSObject <NSApplicationDelegate>
@property (nonatomic, strong) NSWindow *window;
@end
@implementation AppDelegate
- (instancetype)init {
if (self = [super init]) {
NSViewController *rootViewController = [[ViewController alloc] initWithNibName:nil bundle:nil];
self.window = [[NSWindow alloc] initWithContentRect:NSZeroRect
styleMask:NSWindowStyleMaskTitled | NSWindowStyleMaskClosable | NSWindowStyleMaskResizable | NSWindowStyleMaskMiniaturizable
backing:NSBackingStoreBuffered
defer:NO];
self.window.contentViewController = rootViewController;
[self.window orderFront:self];
[self.window center];
[self.window becomeKeyWindow];
}
return self;
}
- (BOOL)applicationShouldTerminateAfterLastWindowClosed:(NSApplication *)sender {
return YES;
}
@end
#else
@interface AppDelegate : UIResponder <UIApplicationDelegate>
@property (strong, nonatomic) UIWindow *window;
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application
didFinishLaunchingWithOptions:(NSDictionary<UIApplicationLaunchOptionsKey,id> *)launchOptions
{
UIViewController *rootViewController = [[ViewController alloc] init];
self.window = [[UIWindow alloc] initWithFrame:UIScreen.mainScreen.bounds];
self.window.rootViewController = rootViewController;
[self.window makeKeyAndVisible];
return YES;
}
@end
#endif
#pragma mark - main()
#if TARGET_OS_OSX
int main(int argc, const char * argv[]) {
return NSApplicationMain(argc, argv);
}
#else
int main(int argc, char * argv[]) {
@autoreleasepool {
return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
}
}
#endif