kc3-lang/angle/util/osx/OSXWindow.mm

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• Author : Kenneth Russell
  Date : 2022-02-02 14:28:25
  Hash : 25120c56
  Message : Mac: Try to diagnose crashes inside Core Animation. Attempt to diagnose the high flake rate on the mac-test bot. Override [NSApplication _crashOnException], which is being called from an internal Core Animation method NS_setFlushesWithDisplayLink, and print the source exception's stack trace, which is being lost. Bug: angleproject:6570 Change-Id: I6a1653b42f5f024a4532243180a8edc2b7514244 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3433274 Reviewed-by: Yuly Novikov <ynovikov@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Yuly Novikov <ynovikov@chromium.org>

• util/osx/OSXWindow.mm

• //
  // Copyright 2015 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  // OSXWindow.mm: Implementation of OSWindow for OSX
  
  #include "util/osx/OSXWindow.h"
  
  #include <set>
  // Include Carbon to use the keycode names in Carbon's Event.h
  #include <Carbon/Carbon.h>
  
  #include "anglebase/no_destructor.h"
  #include "common/debug.h"
  
  // On OSX 10.12 a number of AppKit interfaces have been renamed for consistency, and the previous
  // symbols tagged as deprecated. However we can't simply use the new symbols as it would break
  // compilation on our automated testing that doesn't use OSX 10.12 yet. So we just ignore the
  // warnings.
  #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
  
  // Some events such as "ShouldTerminate" are sent to the whole application so we keep a list of
  // all the windows in order to forward the event to each of them. However this and calling pushEvent
  // in ApplicationDelegate is inherently unsafe in a multithreaded environment.
  static std::set<OSXWindow *> &AllWindows()
  {
      static angle::base::NoDestructor<std::set<OSXWindow *>> allWindows;
      return *allWindows;
  }
  
  @interface Application : NSApplication
  @end
  
  @implementation Application
  - (void)sendEvent:(NSEvent *)nsEvent
  {
      if ([nsEvent type] == NSApplicationDefined)
      {
          for (auto window : AllWindows())
          {
              if ([window->getNSWindow() windowNumber] == [nsEvent windowNumber])
              {
                  Event event;
                  event.Type = Event::EVENT_TEST;
                  window->pushEvent(event);
              }
          }
      }
      [super sendEvent:nsEvent];
  }
  
  // Override internal method to try to diagnose unexpected crashes in Core Animation.
  // anglebug.com/6570
  // See also:
  //   https://github.com/microsoft/appcenter-sdk-apple/issues/1944
  //   https://stackoverflow.com/questions/220159/how-do-you-print-out-a-stack-trace-to-the-console-log-in-cocoa
  - (void)_crashOnException:(NSException *)exception
  {
      NSLog(@"*** OSXWindow aborting on exception:  <%@> %@", [exception name], [exception reason]);
      NSLog(@"%@", [exception callStackSymbols]);
      abort();
  }
  @end
  
  // The Delegate receiving application-wide events.
  @interface ApplicationDelegate : NSObject
  @end
  
  @implementation ApplicationDelegate
  - (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender
  {
      Event event;
      event.Type = Event::EVENT_CLOSED;
      for (auto window : AllWindows())
      {
          window->pushEvent(event);
      }
      return NSTerminateCancel;
  }
  @end
  static ApplicationDelegate *gApplicationDelegate = nil;
  
  static bool InitializeAppKit()
  {
      if (NSApp != nil)
      {
          return true;
      }
  
      // Initialize the global variable "NSApp"
      [Application sharedApplication];
  
      // Make us appear in the dock
      [NSApp setActivationPolicy:NSApplicationActivationPolicyRegular];
  
      // Register our global event handler
      gApplicationDelegate = [[ApplicationDelegate alloc] init];
      if (gApplicationDelegate == nil)
      {
          return false;
      }
      [NSApp setDelegate:static_cast<id>(gApplicationDelegate)];
  
      // Set our status to "started" so we are not bouncing in the doc and can activate
      [NSApp finishLaunching];
      return true;
  }
  
  // NS's and CG's coordinate systems start at the bottom left, while OSWindow's coordinate
  // system starts at the top left. This function converts the Y coordinate accordingly.
  static float YCoordToFromCG(float y)
  {
      float screenHeight = CGDisplayBounds(CGMainDisplayID()).size.height;
      return screenHeight - y;
  }
  
  // Delegate for window-wide events, note that the protocol doesn't contain anything input related.
  @implementation WindowDelegate
  - (id)initWithWindow:(OSXWindow *)window
  {
      self = [super init];
      if (self != nil)
      {
          mWindow = window;
      }
      return self;
  }
  
  - (void)onOSXWindowDeleted
  {
      mWindow = nil;
  }
  
  - (BOOL)windowShouldClose:(id)sender
  {
      Event event;
      event.Type = Event::EVENT_CLOSED;
      mWindow->pushEvent(event);
      return NO;
  }
  
  - (void)windowDidResize:(NSNotification *)notification
  {
      NSSize windowSize = [[mWindow->getNSWindow() contentView] frame].size;
      Event event;
      event.Type        = Event::EVENT_RESIZED;
      event.Size.Width  = (int)windowSize.width;
      event.Size.Height = (int)windowSize.height;
      mWindow->pushEvent(event);
  }
  
  - (void)windowDidMove:(NSNotification *)notification
  {
      NSRect screenspace = [mWindow->getNSWindow() frame];
      Event event;
      event.Type   = Event::EVENT_MOVED;
      event.Move.X = (int)screenspace.origin.x;
      event.Move.Y = (int)YCoordToFromCG(screenspace.origin.y + screenspace.size.height);
      mWindow->pushEvent(event);
  }
  
  - (void)windowDidBecomeKey:(NSNotification *)notification
  {
      Event event;
      event.Type = Event::EVENT_GAINED_FOCUS;
      mWindow->pushEvent(event);
      [self retain];
  }
  
  - (void)windowDidResignKey:(NSNotification *)notification
  {
      if (mWindow != nil)
      {
          Event event;
          event.Type = Event::EVENT_LOST_FOCUS;
          mWindow->pushEvent(event);
      }
      [self release];
  }
  @end
  
  static Key NSCodeToKey(int keyCode)
  {
      // Missing KEY_PAUSE
      switch (keyCode)
      {
          case kVK_Shift:
              return KEY_LSHIFT;
          case kVK_RightShift:
              return KEY_RSHIFT;
          case kVK_Option:
              return KEY_LALT;
          case kVK_RightOption:
              return KEY_RALT;
          case kVK_Control:
              return KEY_LCONTROL;
          case kVK_RightControl:
              return KEY_RCONTROL;
          case kVK_Command:
              return KEY_LSYSTEM;
          // Right System doesn't have a name, but shows up as 0x36.
          case 0x36:
              return KEY_RSYSTEM;
          case kVK_Function:
              return KEY_MENU;
  
          case kVK_ANSI_Semicolon:
              return KEY_SEMICOLON;
          case kVK_ANSI_Slash:
              return KEY_SLASH;
          case kVK_ANSI_Equal:
              return KEY_EQUAL;
          case kVK_ANSI_Minus:
              return KEY_DASH;
          case kVK_ANSI_LeftBracket:
              return KEY_LBRACKET;
          case kVK_ANSI_RightBracket:
              return KEY_RBRACKET;
          case kVK_ANSI_Comma:
              return KEY_COMMA;
          case kVK_ANSI_Period:
              return KEY_PERIOD;
          case kVK_ANSI_Backslash:
              return KEY_BACKSLASH;
          case kVK_ANSI_Grave:
              return KEY_TILDE;
          case kVK_Escape:
              return KEY_ESCAPE;
          case kVK_Space:
              return KEY_SPACE;
          case kVK_Return:
              return KEY_RETURN;
          case kVK_Delete:
              return KEY_BACK;
          case kVK_Tab:
              return KEY_TAB;
          case kVK_PageUp:
              return KEY_PAGEUP;
          case kVK_PageDown:
              return KEY_PAGEDOWN;
          case kVK_End:
              return KEY_END;
          case kVK_Home:
              return KEY_HOME;
          case kVK_Help:
              return KEY_INSERT;
          case kVK_ForwardDelete:
              return KEY_DELETE;
          case kVK_ANSI_KeypadPlus:
              return KEY_ADD;
          case kVK_ANSI_KeypadMinus:
              return KEY_SUBTRACT;
          case kVK_ANSI_KeypadMultiply:
              return KEY_MULTIPLY;
          case kVK_ANSI_KeypadDivide:
              return KEY_DIVIDE;
  
          case kVK_F1:
              return KEY_F1;
          case kVK_F2:
              return KEY_F2;
          case kVK_F3:
              return KEY_F3;
          case kVK_F4:
              return KEY_F4;
          case kVK_F5:
              return KEY_F5;
          case kVK_F6:
              return KEY_F6;
          case kVK_F7:
              return KEY_F7;
          case kVK_F8:
              return KEY_F8;
          case kVK_F9:
              return KEY_F9;
          case kVK_F10:
              return KEY_F10;
          case kVK_F11:
              return KEY_F11;
          case kVK_F12:
              return KEY_F12;
          case kVK_F13:
              return KEY_F13;
          case kVK_F14:
              return KEY_F14;
          case kVK_F15:
              return KEY_F15;
  
          case kVK_LeftArrow:
              return KEY_LEFT;
          case kVK_RightArrow:
              return KEY_RIGHT;
          case kVK_DownArrow:
              return KEY_DOWN;
          case kVK_UpArrow:
              return KEY_UP;
  
          case kVK_ANSI_Keypad0:
              return KEY_NUMPAD0;
          case kVK_ANSI_Keypad1:
              return KEY_NUMPAD1;
          case kVK_ANSI_Keypad2:
              return KEY_NUMPAD2;
          case kVK_ANSI_Keypad3:
              return KEY_NUMPAD3;
          case kVK_ANSI_Keypad4:
              return KEY_NUMPAD4;
          case kVK_ANSI_Keypad5:
              return KEY_NUMPAD5;
          case kVK_ANSI_Keypad6:
              return KEY_NUMPAD6;
          case kVK_ANSI_Keypad7:
              return KEY_NUMPAD7;
          case kVK_ANSI_Keypad8:
              return KEY_NUMPAD8;
          case kVK_ANSI_Keypad9:
              return KEY_NUMPAD9;
  
          case kVK_ANSI_A:
              return KEY_A;
          case kVK_ANSI_B:
              return KEY_B;
          case kVK_ANSI_C:
              return KEY_C;
          case kVK_ANSI_D:
              return KEY_D;
          case kVK_ANSI_E:
              return KEY_E;
          case kVK_ANSI_F:
              return KEY_F;
          case kVK_ANSI_G:
              return KEY_G;
          case kVK_ANSI_H:
              return KEY_H;
          case kVK_ANSI_I:
              return KEY_I;
          case kVK_ANSI_J:
              return KEY_J;
          case kVK_ANSI_K:
              return KEY_K;
          case kVK_ANSI_L:
              return KEY_L;
          case kVK_ANSI_M:
              return KEY_M;
          case kVK_ANSI_N:
              return KEY_N;
          case kVK_ANSI_O:
              return KEY_O;
          case kVK_ANSI_P:
              return KEY_P;
          case kVK_ANSI_Q:
              return KEY_Q;
          case kVK_ANSI_R:
              return KEY_R;
          case kVK_ANSI_S:
              return KEY_S;
          case kVK_ANSI_T:
              return KEY_T;
          case kVK_ANSI_U:
              return KEY_U;
          case kVK_ANSI_V:
              return KEY_V;
          case kVK_ANSI_W:
              return KEY_W;
          case kVK_ANSI_X:
              return KEY_X;
          case kVK_ANSI_Y:
              return KEY_Y;
          case kVK_ANSI_Z:
              return KEY_Z;
  
          case kVK_ANSI_1:
              return KEY_NUM1;
          case kVK_ANSI_2:
              return KEY_NUM2;
          case kVK_ANSI_3:
              return KEY_NUM3;
          case kVK_ANSI_4:
              return KEY_NUM4;
          case kVK_ANSI_5:
              return KEY_NUM5;
          case kVK_ANSI_6:
              return KEY_NUM6;
          case kVK_ANSI_7:
              return KEY_NUM7;
          case kVK_ANSI_8:
              return KEY_NUM8;
          case kVK_ANSI_9:
              return KEY_NUM9;
          case kVK_ANSI_0:
              return KEY_NUM0;
      }
  
      return Key(0);
  }
  
  static void AddNSKeyStateToEvent(Event *event, NSEventModifierFlags state)
  {
      event->Key.Shift   = state & NSShiftKeyMask;
      event->Key.Control = state & NSControlKeyMask;
      event->Key.Alt     = state & NSAlternateKeyMask;
      event->Key.System  = state & NSCommandKeyMask;
  }
  
  static MouseButton TranslateMouseButton(NSInteger button)
  {
      switch (button)
      {
          case 2:
              return MOUSEBUTTON_MIDDLE;
          case 3:
              return MOUSEBUTTON_BUTTON4;
          case 4:
              return MOUSEBUTTON_BUTTON5;
          default:
              return MOUSEBUTTON_UNKNOWN;
      }
  }
  
  // Delegate for NSView events, mostly the input events
  @implementation ContentView
  - (id)initWithWindow:(OSXWindow *)window
  {
      self = [super init];
      if (self != nil)
      {
          mWindow          = window;
          mTrackingArea    = nil;
          mCurrentModifier = 0;
          [self updateTrackingAreas];
      }
      return self;
  }
  
  - (void)dealloc
  {
      [mTrackingArea release];
      [super dealloc];
  }
  
  - (void)updateTrackingAreas
  {
      if (mTrackingArea != nil)
      {
          [self removeTrackingArea:mTrackingArea];
          [mTrackingArea release];
          mTrackingArea = nil;
      }
  
      NSRect bounds               = [self bounds];
      NSTrackingAreaOptions flags = NSTrackingMouseEnteredAndExited | NSTrackingActiveInKeyWindow |
                                    NSTrackingCursorUpdate | NSTrackingInVisibleRect |
                                    NSTrackingAssumeInside;
      mTrackingArea = [[NSTrackingArea alloc] initWithRect:bounds
                                                   options:flags
                                                     owner:self
                                                  userInfo:nil];
  
      [self addTrackingArea:mTrackingArea];
      [super updateTrackingAreas];
  }
  
  // Helps with performance
  - (BOOL)isOpaque
  {
      return YES;
  }
  
  - (BOOL)canBecomeKeyView
  {
      return YES;
  }
  
  - (BOOL)acceptsFirstResponder
  {
      return YES;
  }
  
  // Handle mouse events from the NSResponder protocol
  - (float)translateMouseY:(float)y
  {
      return [self frame].size.height - y;
  }
  
  - (void)addButtonEvent:(NSEvent *)nsEvent
                    type:(Event::EventType)eventType
                  button:(MouseButton)button
  {
      Event event;
      event.Type               = eventType;
      event.MouseButton.Button = button;
      event.MouseButton.X      = (int)[nsEvent locationInWindow].x;
      event.MouseButton.Y      = (int)[self translateMouseY:[nsEvent locationInWindow].y];
      mWindow->pushEvent(event);
  }
  
  - (void)mouseDown:(NSEvent *)event
  {
      [self addButtonEvent:event type:Event::EVENT_MOUSE_BUTTON_PRESSED button:MOUSEBUTTON_LEFT];
  }
  
  - (void)mouseDragged:(NSEvent *)event
  {
      [self mouseMoved:event];
  }
  
  - (void)mouseUp:(NSEvent *)event
  {
      [self addButtonEvent:event type:Event::EVENT_MOUSE_BUTTON_RELEASED button:MOUSEBUTTON_LEFT];
  }
  
  - (void)mouseMoved:(NSEvent *)nsEvent
  {
      Event event;
      event.Type        = Event::EVENT_MOUSE_MOVED;
      event.MouseMove.X = (int)[nsEvent locationInWindow].x;
      event.MouseMove.Y = (int)[self translateMouseY:[nsEvent locationInWindow].y];
      mWindow->pushEvent(event);
  }
  
  - (void)mouseEntered:(NSEvent *)nsEvent
  {
      Event event;
      event.Type = Event::EVENT_MOUSE_ENTERED;
      mWindow->pushEvent(event);
  }
  
  - (void)mouseExited:(NSEvent *)nsEvent
  {
      Event event;
      event.Type = Event::EVENT_MOUSE_LEFT;
      mWindow->pushEvent(event);
  }
  
  - (void)rightMouseDown:(NSEvent *)event
  {
      [self addButtonEvent:event type:Event::EVENT_MOUSE_BUTTON_PRESSED button:MOUSEBUTTON_RIGHT];
  }
  
  - (void)rightMouseDragged:(NSEvent *)event
  {
      [self mouseMoved:event];
  }
  
  - (void)rightMouseUp:(NSEvent *)event
  {
      [self addButtonEvent:event type:Event::EVENT_MOUSE_BUTTON_RELEASED button:MOUSEBUTTON_RIGHT];
  }
  
  - (void)otherMouseDown:(NSEvent *)event
  {
      [self addButtonEvent:event
                      type:Event::EVENT_MOUSE_BUTTON_PRESSED
                    button:TranslateMouseButton([event buttonNumber])];
  }
  
  - (void)otherMouseDragged:(NSEvent *)event
  {
      [self mouseMoved:event];
  }
  
  - (void)otherMouseUp:(NSEvent *)event
  {
      [self addButtonEvent:event
                      type:Event::EVENT_MOUSE_BUTTON_RELEASED
                    button:TranslateMouseButton([event buttonNumber])];
  }
  
  - (void)scrollWheel:(NSEvent *)nsEvent
  {
      if (static_cast<int>([nsEvent deltaY]) == 0)
      {
          return;
      }
  
      Event event;
      event.Type             = Event::EVENT_MOUSE_WHEEL_MOVED;
      event.MouseWheel.Delta = (int)[nsEvent deltaY];
      mWindow->pushEvent(event);
  }
  
  // Handle key events from the NSResponder protocol
  - (void)keyDown:(NSEvent *)nsEvent
  {
      // TODO(cwallez) also send text events
      Event event;
      event.Type     = Event::EVENT_KEY_PRESSED;
      event.Key.Code = NSCodeToKey([nsEvent keyCode]);
      AddNSKeyStateToEvent(&event, [nsEvent modifierFlags]);
      mWindow->pushEvent(event);
  }
  
  - (void)keyUp:(NSEvent *)nsEvent
  {
      Event event;
      event.Type     = Event::EVENT_KEY_RELEASED;
      event.Key.Code = NSCodeToKey([nsEvent keyCode]);
      AddNSKeyStateToEvent(&event, [nsEvent modifierFlags]);
      mWindow->pushEvent(event);
  }
  
  // Modifier keys do not trigger keyUp/Down events but only flagsChanged events.
  - (void)flagsChanged:(NSEvent *)nsEvent
  {
      Event event;
  
      // Guess if the key has been pressed or released with the change of modifiers
      // It currently doesn't work when modifiers are unchanged, such as when pressing
      // both shift keys. GLFW has a solution for this but it requires tracking the
      // state of the keys. Implementing this is still TODO(cwallez)
      int modifier = [nsEvent modifierFlags] & NSDeviceIndependentModifierFlagsMask;
      if (modifier < mCurrentModifier)
      {
          event.Type = Event::EVENT_KEY_RELEASED;
      }
      else
      {
          event.Type = Event::EVENT_KEY_PRESSED;
      }
      mCurrentModifier = modifier;
  
      event.Key.Code = NSCodeToKey([nsEvent keyCode]);
      AddNSKeyStateToEvent(&event, [nsEvent modifierFlags]);
      mWindow->pushEvent(event);
  }
  @end
  
  OSXWindow::OSXWindow() : mWindow(nil), mDelegate(nil), mView(nil) {}
  
  OSXWindow::~OSXWindow()
  {
      destroy();
  }
  
  bool OSXWindow::initializeImpl(const std::string &name, int width, int height)
  {
      if (!InitializeAppKit())
      {
          return false;
      }
  
      unsigned int styleMask = NSTitledWindowMask | NSClosableWindowMask | NSResizableWindowMask |
                               NSMiniaturizableWindowMask;
      mWindow = [[NSWindow alloc] initWithContentRect:NSMakeRect(0, 0, width, height)
                                            styleMask:styleMask
                                              backing:NSBackingStoreBuffered
                                                defer:NO];
  
      if (mWindow == nil)
      {
          return false;
      }
  
      mDelegate = [[WindowDelegate alloc] initWithWindow:this];
      if (mDelegate == nil)
      {
          return false;
      }
      [mWindow setDelegate:static_cast<id>(mDelegate)];
  
      mView = [[ContentView alloc] initWithWindow:this];
      if (mView == nil)
      {
          return false;
      }
      [mView setWantsLayer:YES];
  
      // Disable scaling for this view. If scaling is enabled, the metal backend's
      // frame buffer's size will be this window's size multiplied by contentScale.
      // It will cause inconsistent testing & example apps' results.
      mView.layer.contentsScale = 1;
  
      [mWindow setContentView:mView];
      [mWindow setTitle:[NSString stringWithUTF8String:name.c_str()]];
      [mWindow setAcceptsMouseMovedEvents:YES];
      [mWindow center];
  
      [NSApp activateIgnoringOtherApps:YES];
  
      mX      = 0;
      mY      = 0;
      mWidth  = width;
      mHeight = height;
  
      AllWindows().insert(this);
      return true;
  }
  
  void OSXWindow::disableErrorMessageDialog() {}
  
  void OSXWindow::destroy()
  {
      AllWindows().erase(this);
  
      [mView release];
      mView = nil;
      [mDelegate onOSXWindowDeleted];
      [mDelegate release];
      mDelegate = nil;
      // NSWindow won't be completely released unless its content view is set to nil:
      [mWindow setContentView:nil];
      [mWindow release];
      mWindow = nil;
  }
  
  void OSXWindow::resetNativeWindow() {}
  
  EGLNativeWindowType OSXWindow::getNativeWindow() const
  {
      return [mView layer];
  }
  
  EGLNativeDisplayType OSXWindow::getNativeDisplay() const
  {
      // TODO(cwallez): implement it once we have defined what EGLNativeDisplayType is
      return static_cast<EGLNativeDisplayType>(0);
  }
  
  void OSXWindow::messageLoop()
  {
      @autoreleasepool
      {
          while (true)
          {
              // TODO(http://anglebug.com/6570): @try/@catch is a workaround for
              // exceptions being thrown from Cocoa-internal function
              // NS_setFlushesWithDisplayLink starting in macOS 11.
              @try
              {
                  NSEvent *event = [NSApp nextEventMatchingMask:NSAnyEventMask
                                                      untilDate:[NSDate distantPast]
                                                         inMode:NSDefaultRunLoopMode
                                                        dequeue:YES];
                  if (event == nil)
                  {
                      break;
                  }
  
                  if ([event type] == NSAppKitDefined)
                  {
                      continue;
                  }
                  [NSApp sendEvent:event];
              }
              @catch (NSException *localException)
              {
                  NSLog(@"*** OSXWindow discarding exception: <%@> %@", [localException name],
                        [localException reason]);
              }
          }
      }
  }
  
  void OSXWindow::setMousePosition(int x, int y)
  {
      y = (int)([mWindow frame].size.height) - y - 1;
      NSPoint screenspace;
  
  #if MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_7
      screenspace = [mWindow convertBaseToScreen:NSMakePoint(x, y)];
  #else
      screenspace = [mWindow convertRectToScreen:NSMakeRect(x, y, 0, 0)].origin;
  #endif
      CGWarpMouseCursorPosition(CGPointMake(screenspace.x, YCoordToFromCG(screenspace.y)));
  }
  
  bool OSXWindow::setOrientation(int width, int height)
  {
      UNIMPLEMENTED();
      return false;
  }
  
  bool OSXWindow::setPosition(int x, int y)
  {
      // Given CG and NS's coordinate system, the "Y" position of a window is the Y coordinate
      // of the bottom of the window.
      int newBottom    = (int)([mWindow frame].size.height) + y;
      NSRect emptyRect = NSMakeRect(x, YCoordToFromCG(newBottom), 0, 0);
      [mWindow setFrameOrigin:[mWindow frameRectForContentRect:emptyRect].origin];
      return true;
  }
  
  bool OSXWindow::resize(int width, int height)
  {
      [mWindow setContentSize:NSMakeSize(width, height)];
      return true;
  }
  
  void OSXWindow::setVisible(bool isVisible)
  {
      if (isVisible)
      {
          [mWindow makeKeyAndOrderFront:nil];
      }
      else
      {
          [mWindow orderOut:nil];
      }
  }
  
  void OSXWindow::signalTestEvent()
  {
      @autoreleasepool
      {
          NSEvent *event = [NSEvent otherEventWithType:NSApplicationDefined
                                              location:NSMakePoint(0, 0)
                                         modifierFlags:0
                                             timestamp:0.0
                                          windowNumber:[mWindow windowNumber]
                                               context:nil
                                               subtype:0
                                                 data1:0
                                                 data2:0];
          [NSApp postEvent:event atStart:YES];
      }
  }
  
  NSWindow *OSXWindow::getNSWindow() const
  {
      return mWindow;
  }
  
  // static
  OSWindow *OSWindow::New()
  {
      return new OSXWindow;
  }