1 files changed, 53 insertions, 20 deletions

diff --git a/macosx/tkMacOSXMouseEvent.c b/macosx/tkMacOSXMouseEvent.c
index 6481fbd..2b9d0bf 100644
--- a/macosx/tkMacOSXMouseEvent.c
+++ b/macosx/tkMacOSXMouseEvent.c
@@ -28,12 +28,53 @@ static int		GenerateButtonEvent(MouseEventData *medPtr);
 static unsigned int	ButtonModifiers2State(UInt32 buttonState,
 			    UInt32 keyModifiers);
 
+#pragma mark NSWindow(TKMouseEvent)
+
+/* Conversion of coordinates between window and screen */
+@interface NSWindow(TKWm)
+- (NSPoint) convertPointToScreen:(NSPoint)point;
+- (NSPoint) convertPointFromScreen:(NSPoint)point;
+@end
+
+@implementation NSWindow(TKMouseEvent)
+#if MAC_OS_X_VERSION_MIN_REQUIRED < 1070
+- (NSPoint) convertPointToScreen: (NSPoint) point
+{
+    return [self convertBaseToScreen:point];
+}
+- (NSPoint) convertPointFromScreen: (NSPoint)point
+{
+    return [self convertScreenToBase:point];
+}
+@end
+#else
+- (NSPoint) convertPointToScreen: (NSPoint)point
+{
+    NSRect pointrect;
+    pointrect.origin = point;
+    pointrect.size.width = 0;
+    pointrect.size.height = 0;
+    return [self convertRectToScreen:pointrect].origin;
+}
+- (NSPoint) convertPointFromScreen: (NSPoint)point
+{
+    NSRect pointrect;
+    pointrect.origin = point;
+    pointrect.size.width = 0;
+    pointrect.size.height = 0;
+    return [self convertRectFromScreen:pointrect].origin;
+}
+@end
+#endif
+
+#pragma mark -
+
+
 #pragma mark TKApplication(TKMouseEvent)
 
 enum {
     NSWindowWillMoveEventType = 20
 };
-
 /* 
  * In OS X 10.6 an NSEvent of type NSMouseMoved would always have a non-Nil
  * window attribute when the mouse was inside a window.  As of 10.8 this
@@ -51,8 +92,8 @@ enum {
 #ifdef TK_MAC_DEBUG_EVENTS
     TKLog(@"-[%@(%p) %s] %@", [self class], self, _cmd, theEvent);
 #endif
-    id		    win;
-    NSEventType	    type = [theEvent type];
+    id          win;
+    NSEventType	type = [theEvent type];
 #if 0
     NSTrackingArea  *trackingArea = nil;
     NSInteger eventNumber, clickCount, buttonNumber;
@@ -61,7 +102,13 @@ enum {
     switch (type) {
     case NSMouseEntered:
 	/* Remember which window has the mouse. */
+	if (_windowWithMouse) {
+	    [_windowWithMouse release];
+	}
 	_windowWithMouse = [theEvent window];
+	if (_windowWithMouse) {
+	    [_windowWithMouse retain];
+	}
 	break;
     case NSMouseExited:
     case NSCursorUpdate:
@@ -93,31 +140,17 @@ enum {
 
     /* Create an Xevent to add to the Tk queue. */
     win = [theEvent window];
+    NSWindow *nswindow = (NSWindow *)win;
     NSPoint global, local = [theEvent locationInWindow];
-#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
-     /* convertBaseToScreen and convertScreenToBase were deprecated in 10.7. */
-    NSRect pointrect;
-    pointrect.origin = local;
-    pointrect.size.width = 0;
-    pointrect.size.height = 0;
-#endif
     if (win) { /* local will be in window coordinates. */
-#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
-	global = [win convertRectToScreen:pointrect].origin;
-#else
-	global = [win convertBaseToScreen:local];
-#endif
+	global = [nswindow convertPointToScreen: local];
 	local.y = [win frame].size.height - local.y;
 	global.y = tkMacOSXZeroScreenHeight - global.y;
     } else { /* local will be in screen coordinates. */
 	if (_windowWithMouse ) {
 	    win = _windowWithMouse;
 	    global = local;
-#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1070
-	    local = [win convertRectFromScreen:pointrect].origin;
-#else
-	    local = [win convertScreenToBase:local];
-#endif
+	    local = [nswindow convertPointFromScreen: local];
 	    local.y = [win frame].size.height - local.y;
 	    global.y = tkMacOSXZeroScreenHeight - global.y;
 	} else { /* We have no window. Use the screen???*/