sdl_quartzevents.m

MPEG-4编解码的实现(包括MPEG4视音频编解码)

				SDL_PrivateKeyboard (SDL_PRESSED, &key);
			SDL_PrivateKeyboard (SDL_RELEASED, &key);
		}
		else
		if ( newMask &&
			 currentMask != newMask ) {	 /* modifier down event */
		
			key.sym = mapping[i];
			SDL_PrivateKeyboard (SDL_PRESSED, &key);
			/* If this was Caps Lock, we need some additional voodoo to make SDL happy */
			if (bit == NSAlphaShiftKeyMask)
				SDL_PrivateKeyboard (SDL_RELEASED, &key);
		}
	}
	
	currentMods = newMods;
}

static void QZ_DoActivate (_THIS)
{
	inForeground = YES;

	/* Regrab the mouse */
	if (currentGrabMode == SDL_GRAB_ON) {
		QZ_WarpWMCursor (this, SDL_VideoSurface->w / 2, SDL_VideoSurface->h / 2);
		CGAssociateMouseAndMouseCursorPosition (0);
	}

	/* Hide the mouse cursor if inside the app window */
	if (!QZ_cursor_visible) {
		HideCursor ();
	}
	
	SDL_PrivateAppActive (1, SDL_APPINPUTFOCUS);
}

static void QZ_DoDeactivate (_THIS) {
	
	inForeground = NO;

	/* Ungrab mouse if it is grabbed */
	if (currentGrabMode == SDL_GRAB_ON) {
		CGAssociateMouseAndMouseCursorPosition (1);
	}

	/* Show the mouse cursor */
	if (!QZ_cursor_visible) {
		ShowCursor ();
	}
	
	SDL_PrivateAppActive (0, SDL_APPINPUTFOCUS);
}

static void QZ_PumpEvents (_THIS)
{
	
        static NSPoint lastMouse;
        NSPoint mouse, saveMouse;
        Point qdMouse;
        CGMouseDelta dx, dy;
        
        NSDate *distantPast;
	NSEvent *event;
	NSRect winRect;
	NSRect titleBarRect;
	NSAutoreleasePool *pool;
	
	pool = [ [ NSAutoreleasePool alloc ] init ];
	distantPast = [ NSDate distantPast ];
	
	winRect = NSMakeRect (0, 0, SDL_VideoSurface->w, SDL_VideoSurface->h);
	titleBarRect = NSMakeRect ( 0, SDL_VideoSurface->h, SDL_VideoSurface->w,
		SDL_VideoSurface->h + 22 );
	
        if (currentGrabMode != SDL_GRAB_ON) { /* if grabbed, the cursor can't move! (see fallback below) */
        
            /* 1/2 second after a warp, the mouse cannot move (don't ask me why) */
            /* So, approximate motion with CGGetLastMouseDelta, which still works, somehow */
            if (! warp_flag) {
            
                GetGlobalMouse (&qdMouse);  /* use Carbon since [ NSEvent mouseLocation ] is broken */
                mouse = NSMakePoint (qdMouse.h, qdMouse.v);
                saveMouse = mouse;
                
                if (mouse.x != lastMouse.x || mouse.y != lastMouse.y) {
                
                    QZ_PrivateCGToSDL (this, &mouse);
                    if (inForeground && NSPointInRect (mouse, winRect)) {
                        //printf ("Mouse Loc: (%f, %f)\n", mouse.x, mouse.y);
                        SDL_PrivateMouseMotion (0, 0, mouse.x, mouse.y);
                    }
                }
                lastMouse = saveMouse;
            }
        }
        
        /* accumulate any mouse events into one SDL mouse event */
        dx = 0;
        dy = 0;
        
	do {
	
		/* Poll for an event. This will not block */
		event = [ NSApp nextEventMatchingMask:NSAnyEventMask
					untilDate:distantPast
					inMode: NSDefaultRunLoopMode dequeue:YES ];
	
		if (event != nil) {
			unsigned int type;
			BOOL isForGameWin;

			#define DO_MOUSE_DOWN(button, sendToWindow) do {				 \
				if ( inForeground ) {			                                 \
					if ( (SDL_VideoSurface->flags & SDL_FULLSCREEN) ||		 \
						 NSPointInRect([event locationInWindow], winRect) )	 \
						SDL_PrivateMouseButton (SDL_PRESSED, button, 0, 0);	 \
				}                                                                        \
				else {									 \
					QZ_DoActivate (this);                                            \
				}									 \
				[ NSApp sendEvent:event ];			                         \
				} while(0)
				
			#define DO_MOUSE_UP(button, sendToWindow) do {					 \
				if ( (SDL_VideoSurface->flags & SDL_FULLSCREEN) ||			 \
					 !NSPointInRect([event locationInWindow], titleBarRect) )        \
					SDL_PrivateMouseButton (SDL_RELEASED, button, 0, 0);	         \
				[ NSApp sendEvent:event ];						 \
				} while(0)

			type = [ event type ];
			isForGameWin = (qz_window == [ event window ]);
			switch (type) {
			
			case NSLeftMouseDown:
				if ( NSCommandKeyMask & currentMods ) {
					last_virtual_button = 3;
					DO_MOUSE_DOWN (3, 0);
				}
				else if ( NSAlternateKeyMask & currentMods ) {
					last_virtual_button = 2;
					DO_MOUSE_DOWN (2, 0);
				}
				else {
					DO_MOUSE_DOWN (1, 1);
				}
				break;
			case NSOtherMouseDown: DO_MOUSE_DOWN (2, 0); break;
			case NSRightMouseDown: DO_MOUSE_DOWN (3, 0); break;	
			case NSLeftMouseUp:
			
				if ( last_virtual_button != 0 ) {
					DO_MOUSE_UP (last_virtual_button, 0);
					last_virtual_button = 0;
				}
				else {
					DO_MOUSE_UP (1, 1);
				}
				break;
			case NSOtherMouseUp:   DO_MOUSE_UP (2, 0);	 break;
			case NSRightMouseUp:   DO_MOUSE_UP (3, 0);	 break;
			case NSSystemDefined:
				//if ([event subtype] == 7) {
				//	  unsigned int buttons;	  // up to 32 mouse button states!
				//	  buttons = [ event data2 ];
				//}
				break;
			case NSLeftMouseDragged:
			case NSRightMouseDragged:
			case 27:
			case NSMouseMoved:
                            
                                if (currentGrabMode == SDL_GRAB_ON) { 
                                    
                                    /** 
                                     *  If input is grabbed, we'll wing it and try to send some mouse
                                     *  moved events with CGGetLastMouseDelta(). Not optimal, but better
                                     *  than nothing.
                                     **/ 
                                     CGMouseDelta dx1, dy1;
                                     CGGetLastMouseDelta (&dx1, &dy1);
                                     dx += dx1;
                                     dy += dy1;
                                }
                                else if (warp_flag) {
                                
                                    Uint32 ticks;
                
                                    ticks = SDL_GetTicks();
                                    if (ticks - warp_ticks < 150) {
                                    
                                        CGMouseDelta dx1, dy1;
                                        CGGetLastMouseDelta (&dx1, &dy1);
                                        dx += dx1;
                                        dy += dy1;
                                    }
                                    else {
                                        
                                        warp_flag = 0;
                                    }
                                }
                                
				break;
			case NSScrollWheel:
				{
					if (NSPointInRect([ event locationInWindow ], winRect)) {
						float dy;
						dy = [ event deltaY ];
						if ( dy > 0.0 ) /* Scroll up */
							SDL_PrivateMouseButton (SDL_PRESSED, 4, 0, 0);
						else /* Scroll down */
							SDL_PrivateMouseButton (SDL_PRESSED, 5, 0, 0);
					}
				}
				break;
			case NSKeyUp:
				QZ_DoKey (SDL_RELEASED, event);
				break;
			case NSKeyDown:
				QZ_DoKey (SDL_PRESSED, event);
				break;
			case NSFlagsChanged:
				QZ_DoModifiers( [ event modifierFlags ] );
				break;
			case NSAppKitDefined:
				switch ( [ event subtype ] ) {
				case NSApplicationActivatedEventType:
					QZ_DoActivate (this);
					break;
				case NSApplicationDeactivatedEventType:
					QZ_DoDeactivate (this);
					break;
				}
				[ NSApp sendEvent:event ];
				break;
			/* case NSApplicationDefined: break; */
			/* case NSPeriodic: break; */
			/* case NSCursorUpdate: break; */
                        
                        default:
				[ NSApp sendEvent:event ];
			}
		}
	  } while (event != nil);
	
          /* check for accumulated mouse events */
          if (dx != 0 || dy != 0)
            SDL_PrivateMouseMotion (0, 1, dx, dy);
        
	  [ pool release ];
}