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author | Frederik Gladhorn <frederik.gladhorn@digia.com> | 2013-01-24 11:33:17 +0100 |
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committer | Frederik Gladhorn <frederik.gladhorn@digia.com> | 2013-01-24 11:33:58 +0100 |
commit | 1b5f9bec03901519db3694d1b51fa7989ade1f25 (patch) | |
tree | 2b7d539e8f631112e77ae5e2e5867f8ada1febb1 /src/plugins/platforms/cocoa | |
parent | bfd73eaba3000861037d03787f87d1f4dafefea8 (diff) | |
parent | d4f4ee4e033a62858aaf4f29970bc404d9b4c009 (diff) |
Merge remote-tracking branch 'origin/release' into stable
Change-Id: Idcaa9b0c63aca5ba11ee3fa2da456178655a1ae3
Diffstat (limited to 'src/plugins/platforms/cocoa')
-rw-r--r-- | src/plugins/platforms/cocoa/qnsview.mm | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/plugins/platforms/cocoa/qnsview.mm b/src/plugins/platforms/cocoa/qnsview.mm index 715b0c367f..a0e76cb452 100644 --- a/src/plugins/platforms/cocoa/qnsview.mm +++ b/src/plugins/platforms/cocoa/qnsview.mm @@ -473,6 +473,39 @@ static QTouchDevice *touchDevice = 0; [self handleMouseEvent:theEvent]; } +- (void)updateTrackingAreas +{ + [super updateTrackingAreas]; + + // [NSView addTrackingArea] is slow, so bail out early if we can: + if (NSIsEmptyRect([self visibleRect])) + return; + + QCocoaAutoReleasePool pool; + if (NSArray *trackingArray = [self trackingAreas]) { + NSUInteger size = [trackingArray count]; + for (NSUInteger i = 0; i < size; ++i) { + NSTrackingArea *t = [trackingArray objectAtIndex:i]; + [self removeTrackingArea:t]; + } + } + + // Ideally, we shouldn't have NSTrackingMouseMoved events included below, it should + // only be turned on if mouseTracking, hover is on or a tool tip is set. + // Unfortunately, Qt will send "tooltip" events on mouse moves, so we need to + // turn it on in ALL case. That means EVERY QCocoaView gets to pay the cost of + // mouse moves delivered to it (Apple recommends keeping it OFF because there + // is a performance hit). So it goes. + NSUInteger trackingOptions = NSTrackingMouseEnteredAndExited | NSTrackingActiveInActiveApp + | NSTrackingInVisibleRect | NSTrackingMouseMoved; + NSTrackingArea *ta = [[[NSTrackingArea alloc] initWithRect:[self frame] + options:trackingOptions + owner:self + userInfo:nil] + autorelease]; + [self addTrackingArea:ta]; +} + - (void)mouseMoved:(NSEvent *)theEvent { [self handleMouseEvent:theEvent]; |