Examples: Added imgui_impl_osx.mm bindings (#1870, #281)

ago%!(EXTRA string=7 years) · fac0c801da
parent 6f7b7807ad
commit fac0c801da
8 changed files with 866 additions and 6 deletions
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@ -76,6 +76,7 @@ Other Changes:
 - SliderFloat(): When using keyboard/gamepad and a zero precision format string (e.g. "%.0f"), always step in integer units. (#1866)
 - ImFontConfig: Added GlyphMinAdvanceX/GlyphMaxAdvanceX settings useful to make a font appears monospaced, particularly useful for icon fonts. (#1869)
 - ImFontAtlas: Added GetGlyphRangesChineseSimplifiedCommon() helper that returns a list of ~2500 most common Simplified Chinese characters. (#1859) [@JX-Master, @ocornut]
+ - Examples: OSX: Added imgui_impl_osx.mm binding to be used along with e.g. imgui_impl_opengl2.cpp. (#281, #1870) [@pagghiu, @itamago, @ocornut]
 - Examples: GLFW: Made it possible to Shutdown/Init the backend again (by reseting the time storage properly). (#1827) [@ice1000]
 - Misc: Updated stb_textedit from 1.09 + patches to 1.12 + minor patches.
 - Internals: PushItemFlag() flags are inherited by BeginChild().
--- a/examples/.gitignore
+++ b/examples/.gitignore
@ -9,13 +9,18 @@ build/*
 *.vcxproj.user
 *.o
 *.obj
-*.exe
 *.pdb
 *.ilk
 *.VC.db
 *.VC.VC.opendb

-## Unix executables
+## XCode cruft
+.DS_Store
+project.xcworkspace
+xcuserdata/*
+
+## Executables
+*.exe
 example_glfw_opengl2/example_glfw_opengl2
 example_glfw_opengl3/example_glfw_opengl3
 example_sdl_opengl2/example_sdl_opengl2
--- a/examples/README.txt
+++ b/examples/README.txt
@ -109,6 +109,7 @@ Most the example bindings are split in 2 parts:
 List of officially maintained Platforms Bindings:

    imgui_impl_glfw.cpp
+    imgui_impl_osx.mm
    imgui_impl_sdl.cpp
    imgui_impl_win32.cpp

@ -212,10 +213,14 @@ example_sdl_vulkan/
    This is quite long and tedious, because: Vulkan.
    = main.cpp + imgui_impl_sdl.cpp + imgui_impl_vulkan.cpp

+example_osx_opengl2/
+    OSX Cocoa + OpenGL2.
+    = main.mm + imgui_impl_osx.mm + imgui_impl_opengl2.cpp
+
 example_apple/
    OSX & iOS example + OpenGL2.
    THIS EXAMPLE HAS NOT BEEN MAINTAINED PROPERLY AND NEEDS A MAINTAINER.
-    Consider using the example_glfw_opengl3/ instead.
+    Consider using the example_glfw_opengl3/ or example_osx_opengl2/ example instead.
    On iOS, Using Synergy to access keyboard/mouse data from server computer.
    Synergy keyboard integration is rather hacky.

--- a/examples/example_apple/.gitignore
+++ b/examples/example_apple/.gitignore
@ -1,3 +0,0 @@
-.DS_Store
-imguiex.xcodeproj/project.xcworkspace/
-imguiex.xcodeproj/xcuserdata/
--- a/examples/example_osx_opengl2/example_osx_opengl2.xcodeproj/project.pbxproj
+++ b/examples/example_osx_opengl2/example_osx_opengl2.xcodeproj/project.pbxproj
@ -0,0 +1,325 @@
+// !$*UTF8*$!
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--- a/examples/example_osx_opengl2/main.mm
+++ b/examples/example_osx_opengl2/main.mm
@ -0,0 +1,280 @@
+// ImGui - standalone example application for OSX + OpenGL2, using legacy fixed pipeline
+// If you are new to 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
+{
+	ImGui_ImplOpenGL2_NewFrame();
+	ImGui_ImplOSX_NewFrame(self);
+
+    // 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 a simple window.
+	// Tip: if we don't call ImGui::Begin()/ImGui::End() the widgets automatically appears in a window called "Debug".
+	{
+		static float f = 0.0f;
+		static int counter = 0;
+		ImGui::Text("Hello, world!");                           // Display some text (you can use a format string too)
+		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
+
+		ImGui::Checkbox("Demo Window", &show_demo_window);      // Edit bools storing our windows open/close state
+		ImGui::Checkbox("Another Window", &show_another_window);
+
+		if (ImGui::Button("Button"))                            // Buttons return true when clicked (NB: 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);
+	}
+
+	// 2. Show another simple window. In most cases you will use an explicit Begin/End pair to name your windows.
+	if (show_another_window)
+	{
+		ImGui::Begin("Another Window", &show_another_window);
+		ImGui::Text("Hello from another window!");
+		if (ImGui::Button("Close Me"))
+			show_another_window = false;
+		ImGui::End();
+	}
+
+	// 3. Show the ImGui demo window. Most of the sample code is in ImGui::ShowDemoWindow(). Read its code to learn more about Dear ImGui!
+	if (show_demo_window)
+	{
+		ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiCond_FirstUseEver); // Normally user code doesn't need/want to call this because positions are saved in .ini file anyway. Here we just want to make the demo initial state a bit more friendly!
+		ImGui::ShowDemoWindow(&show_demo_window);
+	}
+
+	// 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); }
+-(void)keyDown:(NSEvent *)event         { ImGui_ImplOSX_HandleEvent(event); }
+-(void)flagsChanged:(NSEvent *)event    { ImGui_ImplOSX_HandleEvent(event); }
+-(void)mouseDown:(NSEvent *)event       { ImGui_ImplOSX_HandleEvent(event); }
+-(void)mouseUp:(NSEvent *)event         { ImGui_ImplOSX_HandleEvent(event); }
+-(void)scrollWheel:(NSEvent *)event     { ImGui_ImplOSX_HandleEvent(event); }
+
+@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:@"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:@"ImGui OSX+OpenGL2 Example"];
+    menuItem = [appMenu addItemWithTitle:@"Quit ImGui OSX+OpenGL2 Example" action:@selector(terminate:) keyEquivalent:@"q"];
+    [menuItem setKeyEquivalentModifierMask:NSCommandKeyMask];
+	
+    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::GetStyle().WindowRounding = 0.0f;
+    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);
+}
--- a/examples/imgui_impl_osx.h
+++ b/examples/imgui_impl_osx.h
@ -0,0 +1,11 @@
+// ImGui Platform Binding for: OSX / Cocoa
+// This needs to be used along with a Renderer (e.g. OpenGL2, OpenGL3, Vulkan..)
+
+@class NSEvent;
+@class NSOpenGLView;
+
+// FIXME-OSX: Try replacing with NSView
+IMGUI_API bool        ImGui_ImplOSX_Init();
+IMGUI_API void        ImGui_ImplOSX_Shutdown();
+IMGUI_API void        ImGui_ImplOSX_NewFrame(NSOpenGLView* view);
+IMGUI_API bool        ImGui_ImplOSX_HandleEvent(NSEvent* event);
--- a/examples/imgui_impl_osx.mm
+++ b/examples/imgui_impl_osx.mm
@ -0,0 +1,236 @@
+// ImGui Platform Binding for: OSX / Cocoa
+// This needs to be used along with a Renderer (e.g. OpenGL2, OpenGL3, Vulkan..)
+
+// FIXME-OSX: Keyboard mapping is weird.
+// FIXME-OSX: Mouse cursor shape support (see https://github.com/glfw/glfw/issues/427)
+// FIXME-OSX: Test renderer backend combination, e.g. OpenGL3
+
+#include "imgui.h"
+#include "imgui_impl_osx.h"
+#import <Cocoa/Cocoa.h>
+
+// CHANGELOG
+// (minor and older changes stripped away, please see git history for details)
+//  2018-XX-XX: Initial version.
+
+// Data
+static clock_t  g_Time = 0;
+
+// Functions
+bool ImGui_ImplOSX_Init()
+{
+    ImGuiIO& io = ImGui::GetIO();
+
+    // Setup back-end capabilities flags
+    //io.BackendFlags |= ImGuiBackendFlags_HasMouseCursors;         // We can honor GetMouseCursor() values (optional)
+    //io.BackendFlags |= ImGuiBackendFlags_HasSetMousePos;          // We can honor io.WantSetMousePos requests (optional, rarely used)
+    //io.BackendFlags |= ImGuiBackendFlags_PlatformHasViewports;    // We can create multi-viewports on the Platform side (optional)
+    //io.BackendFlags |= ImGuiBackendFlags_HasMouseHoveredViewport; // We can set io.MouseHoveredViewport correctly (optional, not easy)
+
+    // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
+    io.KeyMap[ImGuiKey_Tab] = 9;
+    io.KeyMap[ImGuiKey_LeftArrow] = ImGuiKey_LeftArrow;
+    io.KeyMap[ImGuiKey_RightArrow] = ImGuiKey_RightArrow;
+    io.KeyMap[ImGuiKey_UpArrow] = ImGuiKey_UpArrow;
+    io.KeyMap[ImGuiKey_DownArrow] = ImGuiKey_DownArrow;
+    io.KeyMap[ImGuiKey_PageUp] = ImGuiKey_PageUp;
+    io.KeyMap[ImGuiKey_PageDown] = ImGuiKey_PageDown;
+    io.KeyMap[ImGuiKey_Home] = ImGuiKey_Home;
+    io.KeyMap[ImGuiKey_End] = ImGuiKey_End;
+    io.KeyMap[ImGuiKey_Insert] = ImGuiKey_Insert;
+    io.KeyMap[ImGuiKey_Delete] = ImGuiKey_Delete;
+    io.KeyMap[ImGuiKey_Backspace] = 127;
+    io.KeyMap[ImGuiKey_Space] = 32;
+    io.KeyMap[ImGuiKey_Enter] = 13;
+    io.KeyMap[ImGuiKey_Escape] = 27;
+    io.KeyMap[ImGuiKey_A] = 'a';
+    io.KeyMap[ImGuiKey_C] = 'c';
+    io.KeyMap[ImGuiKey_V] = 'v';
+    io.KeyMap[ImGuiKey_X] = 'x';
+    io.KeyMap[ImGuiKey_Y] = 'y';
+    io.KeyMap[ImGuiKey_Z] = 'z';
+    
+    // Time elapsed since last frame, in seconds
+    // (in this sample app we'll override this every frame because our time step is variable)
+    io.DeltaTime = 1.0f/60.0f;
+    
+    return true;
+}
+
+void ImGui_ImplOSX_Shutdown()
+{
+}
+
+void ImGui_ImplOSX_NewFrame(NSOpenGLView* view)
+{
+    ImGuiIO& io = ImGui::GetIO();
+
+    // Setup display size
+    const float dpi = [view.window backingScaleFactor];
+    io.DisplaySize = ImVec2((float)view.bounds.size.width, (float)view.bounds.size.height);
+    io.DisplayFramebufferScale = ImVec2(dpi, dpi);
+
+    // Setup time step
+    if (g_Time == 0)
+        g_Time = clock();
+    clock_t current_time = clock();
+    io.DeltaTime = (double)(current_time - g_Time) / CLOCKS_PER_SEC;
+    g_Time = current_time;
+
+    NSWindow* main_window = [view window];
+    NSPoint mouse_pos = [main_window mouseLocationOutsideOfEventStream];
+    mouse_pos = [view convertPoint:mouse_pos fromView:nil];
+    io.MousePos = ImVec2(mouse_pos.x, mouse_pos.y - 1);
+
+    // Start the frame. This call will update the io.WantCaptureMouse, io.WantCaptureKeyboard flag that you can use to dispatch inputs (or not) to your application.
+    ImGui::NewFrame();
+}
+
+// FIXME-OSX: Store in io.KeysDown[]
+static bool mapKeymap(int* keymap)
+{
+    if (*keymap == NSUpArrowFunctionKey)
+        *keymap = ImGuiKey_LeftArrow;
+    else if (*keymap == NSDownArrowFunctionKey)
+        *keymap = ImGuiKey_DownArrow;
+    else if (*keymap == NSLeftArrowFunctionKey)
+        *keymap = ImGuiKey_LeftArrow;
+    else if (*keymap == NSRightArrowFunctionKey)
+        *keymap = ImGuiKey_RightArrow;
+    else if (*keymap == NSHomeFunctionKey)
+        *keymap = ImGuiKey_Home;
+    else if (*keymap == NSEndFunctionKey)
+        *keymap = ImGuiKey_End;
+    else if (*keymap == NSDeleteFunctionKey)
+        *keymap = ImGuiKey_Delete;
+    else if (*keymap == 25) // SHIFT + TAB
+        *keymap = 9; // TAB
+    else
+        return true;
+    
+    return false;
+}
+
+static void ResetKeys()
+{
+    // FIXME-OSX: Mapping
+    ImGuiIO& io = ImGui::GetIO();
+    io.KeysDown[io.KeyMap[ImGuiKey_A]] = false;
+    io.KeysDown[io.KeyMap[ImGuiKey_C]] = false;
+    io.KeysDown[io.KeyMap[ImGuiKey_V]] = false;
+    io.KeysDown[io.KeyMap[ImGuiKey_X]] = false;
+    io.KeysDown[io.KeyMap[ImGuiKey_Y]] = false;
+    io.KeysDown[io.KeyMap[ImGuiKey_Z]] = false;
+    io.KeysDown[io.KeyMap[ImGuiKey_LeftArrow]] = false;
+    io.KeysDown[io.KeyMap[ImGuiKey_RightArrow]] = false;
+    io.KeysDown[io.KeyMap[ImGuiKey_Tab]] = false;
+    io.KeysDown[io.KeyMap[ImGuiKey_UpArrow]] = false;
+    io.KeysDown[io.KeyMap[ImGuiKey_DownArrow]] = false;
+    io.KeysDown[io.KeyMap[ImGuiKey_Tab]] = false;
+}
+
+bool ImGui_ImplOSX_HandleEvent(NSEvent* event)
+{
+    ImGuiIO& io = ImGui::GetIO();
+
+    if (event.type == NSEventTypeLeftMouseDown)
+    {
+        int button = (int)[event buttonNumber];
+        if (button >= 0 && button < IM_ARRAYSIZE(io.MouseDown))
+            io.MouseDown[button] = true;
+        return io.WantCaptureMouse;
+    }
+
+    if (event.type == NSEventTypeLeftMouseUp)
+    {
+        int button = (int)[event buttonNumber];
+        if (button >= 0 && button < IM_ARRAYSIZE(io.MouseDown))
+            io.MouseDown[button] = false;
+        return io.WantCaptureMouse;
+    }
+
+    if (event.type == NSEventTypeScrollWheel)
+    {
+        double wheel_dx = 0.0;
+        double wheel_dy = 0.0;
+
+        #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1070
+        if (floor(NSAppKitVersionNumber) > NSAppKitVersionNumber10_6)
+        {
+            wheel_dx = [event scrollingDeltaX];
+            wheel_dy = [event scrollingDeltaY];
+            if ([event hasPreciseScrollingDeltas])
+            {
+                wheel_dx *= 0.1;
+                wheel_dy *= 0.1;
+            }
+        }
+        else
+        #endif /*MAC_OS_X_VERSION_MAX_ALLOWED*/
+        {
+            wheel_dx = [event deltaX];
+            wheel_dy = [event deltaY];
+        }
+
+        if (fabs(wheel_dx) > 0.0)
+            io.MouseWheelH += wheel_dx * 0.1f;
+        if (fabs(wheel_dy) > 0.0)
+            io.MouseWheel += wheel_dy * 0.1f;
+        return io.WantCaptureMouse;
+    }
+
+    if (event.type == NSEventTypeKeyDown)
+    {
+        // FIXME-OSX: Try to store native NS keys in KeyDown[]
+        NSString* str = [event characters];
+        int len = (int)[str length];
+        for (int i = 0; i < len; i++)
+        {
+            int keymap = [str characterAtIndex:i];
+            if (mapKeymap(&keymap) && !io.KeyCtrl)
+                io.AddInputCharacter(keymap);
+            if (keymap < 512)
+            {
+                // We must reset in case we're pressing a sequence of special keys while keeping the command pressed
+                if (io.KeyCtrl)
+                    ResetKeys();
+                io.KeysDown[keymap] = true;
+            }
+        }
+        return io.WantCaptureKeyboard;
+    }
+
+    if (event.type == NSEventTypeKeyUp)
+    {
+        NSString* str = [event characters];
+        int len = (int)[str length];
+        for (int i = 0; i < len; i++)
+        {
+            int keymap = [str characterAtIndex:i];
+            mapKeymap(&keymap);
+            if (keymap < 512)
+                io.KeysDown[keymap] = false;
+        }
+        return io.WantCaptureKeyboard;
+    }
+
+    if (event.type == NSEventTypeFlagsChanged)
+    {
+        unsigned int flags;
+        flags = [event modifierFlags] & NSDeviceIndependentModifierFlagsMask;
+        ImGuiIO& io = ImGui::GetIO();
+        bool wasKeyShift= io.KeyShift;
+        bool wasKeyCtrl = io.KeyCtrl;
+        io.KeyShift     = flags & NSShiftKeyMask;
+        io.KeyCtrl      = flags & NSCommandKeyMask;
+        bool keyShiftReleased = wasKeyShift && !io.KeyShift;
+        bool keyCtrlReleased  = wasKeyCtrl  && !io.KeyCtrl;
+
+        // We must reset them as we will not receive any keyUp event if they where pressed during shift or command
+        if (keyShiftReleased || keyCtrlReleased)
+            ResetKeys();
+        return io.WantCaptureKeyboard;
+    }
+    
+    return false;
+}