Fixed so the origin of the touch events is the upper left.

libsdl-org · Aug 14, 2010 · b8765f4 · b8765f4
1 parent 9b3727d
commit b8765f4
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/src/video/cocoa/SDL_cocoawindow.m b/src/video/cocoa/SDL_cocoawindow.m
@@ -330,9 +330,13 @@ - (void)handleTouches:(cocoaTouchType)type withEvent:(NSEvent *)event
                 return;
             }
         } 
+
+        SDL_FingerID fingerId = (SDL_FingerID)[touch identity];
         float x = [touch normalizedPosition].x;
         float y = [touch normalizedPosition].y;
-        SDL_FingerID fingerId = (SDL_FingerID)[touch identity];
+	/* Make the origin the upper left instead of the lower left */
+	y = 1.0f - y;
+
         switch (type) {
         case COCOA_TOUCH_DOWN:
             SDL_SendFingerDown(touchId, fingerId, SDL_TRUE, x, y, 1);