diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/plugins/platforms/cocoa/qnsview_mouse.mm | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/plugins/platforms/cocoa/qnsview_mouse.mm b/src/plugins/platforms/cocoa/qnsview_mouse.mm index 3d6471005d..563a66515a 100644 --- a/src/plugins/platforms/cocoa/qnsview_mouse.mm +++ b/src/plugins/platforms/cocoa/qnsview_mouse.mm @@ -39,6 +39,22 @@ // This file is included from qnsview.mm, and only used to organize the code +/* + The reason for using this helper is to ensure that QNSView doesn't implement + the NSResponder callbacks for mouseEntered, mouseExited, and mouseMoved. + + If it did, we would get mouse events though the responder chain as well, + for example if a subview has a tracking area of its own and calls super + in the handler, which results in forwarding the event though the responder + chain. The same applies if NSWindow.acceptsMouseMovedEvents is YES. + + By having a helper as the target for our tracking areas, we know for sure + that the events we are getting stem from our own tracking areas. + + FIXME: Ideally we wouldn't need this workaround, and would correctly + interact with the responder chain by e.g. calling super if Qt does not + accept the mouse event +*/ @implementation QT_MANGLE_NAMESPACE(QNSViewMouseMoveHelper) { QNSView *view; } |