Tk Source Code

@implementation TKApplication(TKMouseEvent)
- (NSEvent *) tkProcessMouseEvent: (NSEvent *) theEvent
{
    NSWindow *eventWindow = [theEvent window];
    NSEventType eventType = [theEvent type];
    TkWindow *winPtr, *grabWinPtr;
    Tk_Window tkwin;
    NSPoint local, global;
#if 0
    NSTrackingArea *trackingArea = nil;
    NSInteger eventNumber, clickCount, buttonNumber;
#endif

#ifdef TK_MAC_DEBUG_EVENTS
    TKLog(@"-[%@(%p) %s] %@", [self class], self, _cmd, theEvent);

    case NSTabletProximity:
    case NSScrollWheel:
	break;
    default: /* Unrecognized mouse event. */
	return theEvent;
    }

    /*
     * Remember the window in case we need it next time.
     */

    if (eventWindow && eventWindow != _windowWithMouse) {
	if (_windowWithMouse) {
	    [_windowWithMouse release];
	}
	_windowWithMouse = eventWindow;
	[_windowWithMouse retain];
    }

    /*
     * Compute the mouse position in Tk screen coordinates (global) and in the
     * Tk coordinates of its containing Tk Window.
     * Tk coordinates of its containing Tk Window (local). If a grab is in effect,
     * the local coordinates should be relative to the grab window.
     */

    if (eventWindow) {
    NSPoint global, local = [theEvent locationInWindow];

	local = [theEvent locationInWindow];
	global = [eventWindow tkConvertPointToScreen: local];
    /*
     * If the event has no NSWindow, try using the cached NSWindow from the
	tkwin = TkMacOSXGetCapture();
	if (tkwin) {
	    winPtr = (TkWindow *) tkwin;
     * last mouse event.
     */

    if (eventWindow == NULL) {
	eventWindow = _windowWithMouse;
    }
	    eventWindow = TkMacOSXDrawableWindow(winPtr->window);
	    if (eventWindow) {
		local = [eventWindow tkConvertPointFromScreen: global];
	    } else {
		return theEvent;
	    }
    if (eventWindow) {
	/*
	 * Set the local mouse position to its NSWindow flipped coordinates,
	 * with the origin at top left, and the global mouse position to the
	 * flipped screen coordinates.
	 */

	}
	global = [eventWindow tkConvertPointToScreen: local];
	local.y = [eventWindow frame].size.height - local.y;
	global.y = tkMacOSXZeroScreenHeight - global.y;
    } else {
	
	/*
	 * As a last resort, with no NSWindow to work with, set both local and
	 * global to the screen coordinates.
	 * If the event has no NSWindow, the location is in screen coordinates.
	 */

	global = [theEvent locationInWindow];
	tkwin = TkMacOSXGetCapture();
	if (tkwin) {
	    winPtr = (TkWindow *) tkwin;
	    eventWindow = TkMacOSXDrawableWindow(winPtr->window);
	} else {
	    eventWindow = [NSApp mainWindow];
	}
	if (!eventWindow) {
	    return theEvent;
	}
	local = [eventWindow tkConvertPointFromScreen: global];
	local.y = [eventWindow frame].size.height - local.y;
	local.y = tkMacOSXZeroScreenHeight - local.y;
	global.y = tkMacOSXZeroScreenHeight - global.y;
	global = local;
    }

    /*
     * Find the toplevel which corresponds to the event NSWindow.
     * Make sure tkwin is the toplevel which should receive the event.
     */

    if (!tkwin) {
    winPtr = TkMacOSXGetTkWindow(eventWindow);
	winPtr = TkMacOSXGetTkWindow(eventWindow);
    if (winPtr == NULL) {
	tkwin = TkMacOSXGetCapture();
	winPtr = (TkWindow *) tkwin;
    } else {
	tkwin = (Tk_Window) winPtr;
    }
    if (!tkwin) {
#ifdef TK_MAC_DEBUG_EVENTS
	TkMacOSXDbgMsg("tkwin == NULL");
#endif
	return theEvent;	/* Give up.  No window for this event. */

@interface TKApplication : NSApplication {
@private
    Tcl_Interp *_eventInterp;
    NSMenu *_servicesMenu;
    TKMenu *_defaultMainMenu, *_defaultApplicationMenu;
    NSArray *_defaultApplicationMenuItems, *_defaultWindowsMenuItems;
    NSArray *_defaultHelpMenuItems;
    NSWindow *_windowWithMouse;
    NSAutoreleasePool *_mainPool;
#ifdef __i386__
    /* The Objective C runtime used on i386 requires this. */
    int _poolLock;
    int _macMinorVersion;
    Bool _isDrawing;
#endif

#ifdef TK_MAC_DEBUG_NOTIFICATIONS
    TKLog(@"-[%@(%p) %s] %@", [self class], self, _cmd, w);
#endif
    TkWindow *winPtr = TkMacOSXGetTkWindow(w);

    if (winPtr) {
	TkGenWMDestroyEvent((Tk_Window) winPtr);
	if (_windowWithMouse == w) {
	    _windowWithMouse = nil;
	    [w release];
	}
    }

    /*
     * If necessary, TkGenWMDestroyEvent() handles [close]ing the window, so
     * can always return NO from -windowShouldClose: for a Tk window.
     */

- (NSPoint) tkConvertPointFromScreen: (NSPoint)point
{
    return [self convertScreenToBase:point];
}
#else
- (NSPoint) tkConvertPointToScreen: (NSPoint) point
{
    NSRect pointrect;
    NSRect pointrect = {point, {0,0}};
    pointrect.origin = point;
    pointrect.size.width = 0;
    pointrect.size.height = 0;
    return [self convertRectToScreen:pointrect].origin;
}
- (NSPoint) tkConvertPointFromScreen: (NSPoint)point
{
    NSRect pointrect;
    NSRect pointrect = {point, {0,0}};
    pointrect.origin = point;
    pointrect.size.width = 0;
    pointrect.size.height = 0;
    return [self convertRectFromScreen:pointrect].origin;
}
#endif

@end

#pragma mark -