diff options
| author | Timur Pocheptsov <Timur.Pocheptsov@digia.com> | 2014-10-21 11:05:54 +0200 |
|---|---|---|
| committer | Timur Pocheptsov <Timur.Pocheptsov@digia.com> | 2014-10-22 06:59:57 +0200 |
| commit | 2fcc88d02131b0fd64857a2646381653b410f053 (patch) | |
| tree | ba7a8aeba8d31fc4d01d3d678b1fb16b6291ede3 /src | |
| parent | 963037d86b6298fd314450f933376fe589b309e6 (diff) | |
OS X: drag and drop and auto-scrolling
Cocoa sens periodic drag updated events even if there is no
actuall mouse movement (or any other updates).
This breaks animations in different
views/widgets supporting our own auto-scroll (done with timers).
This patch kindly asks Cocoa _not_ to send us these events.
Task-number: QTBUG-32761
Change-Id: I5dad4ceb0a490e2f3cb34a806a5bdb1045b4dac3
Reviewed-by: Morten Johan Sørvig <morten.sorvig@digia.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/plugins/platforms/cocoa/qnsview.mm | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/plugins/platforms/cocoa/qnsview.mm b/src/plugins/platforms/cocoa/qnsview.mm index 6234c0dcbe..92ab16683e 100644 --- a/src/plugins/platforms/cocoa/qnsview.mm +++ b/src/plugins/platforms/cocoa/qnsview.mm @@ -1822,6 +1822,19 @@ static QPoint mapWindowCoordinates(QWindow *source, QWindow *target, QPoint poin return NO; } +- (BOOL)wantsPeriodicDraggingUpdates +{ + // From the documentation: + // + // "If the destination returns NO, these messages are sent only when the mouse moves + // or a modifier flag changes. Otherwise the destination gets the default behavior, + // where it receives periodic dragging-updated messages even if nothing changes." + // + // We do not want these constant drag update events while mouse is stationary, + // since we do all animations (autoscroll) with timers. + return NO; +} + - (NSDragOperation)draggingEntered:(id <NSDraggingInfo>)sender { return [self handleDrag : sender]; |