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5.15.2: fix for QTBUG-98093 (backport of macOS: Fix QSlider's knob positioning on Monterey (4bee9cdc0a)

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This commit is contained in:
kleuter 2021-11-24 12:21:09 +01:00
parent adb5e94f20
commit 7c1d9e7708
1 changed files with 13 additions and 1 deletions
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14
5.15.2/qtbase/src/plugins/styles/mac/qmacstyle_mac.mm
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@ -472,7 +472,11 @@ static bool setupSlider(NSSlider *slider, const QStyleOptionSlider *sl)
if (sl->minimum >= sl->maximum)
return false;
slider.frame = sl->rect.toCGRect();
// NSSlider seems to cache values based on tracking and the last layout of the
// NSView, resulting in incorrect knob rects that break the interaction with
// multiple sliders. So completely reinitialize the slider.
[slider initWithFrame:sl->rect.toCGRect()];
slider.minValue = sl->minimum;
slider.maxValue = sl->maximum;
slider.intValue = sl->sliderPosition;
@ -502,6 +506,14 @@ static bool setupSlider(NSSlider *slider, const QStyleOptionSlider *sl)
// the cell for its metrics and to draw itself.
[slider layoutSubtreeIfNeeded];
if (sl->state & QStyle::State_Sunken) {
const CGRect knobRect = [slider.cell knobRectFlipped:slider.isFlipped];
CGPoint pressPoint;
pressPoint.x = CGRectGetMidX(knobRect);
pressPoint.y = CGRectGetMidY(knobRect);
[slider.cell startTrackingAt:pressPoint inView:slider];
}
return true;
}