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5.13.2: backport big sur tab widget appearance (4d6832d03f)

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This commit is contained in:
kleuter 2020-11-18 11:51:59 +01:00
parent 7c0480cfc4
commit a599890848
1 changed files with 83 additions and 2 deletions
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85
5.13.2/qtbase/src/plugins/styles/mac/qmacstyle_mac.mm
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@ -297,6 +297,19 @@ static QLinearGradient titlebarGradientInactive()
return qt_mac_applicationIsInDarkMode() ? darkGradient : lightGradient;
}
#if QT_CONFIG(tabwidget)
/*
Since macOS 10.14 AppKit is using transparency more extensively, especially for the
dark theme. Inactive buttons, for example, are semi-transparent. And we use them to
draw tab widget's tab bar. The combination of NSBox (also a part of tab widget)
and these transparent buttons gives us an undesired side-effect: an outline of
NSBox is visible through transparent buttons. To avoid this, we have this hack below:
we clip the area where the line would be visible through the buttons. The area we
want to clip away can be described as an intersection of the option's rect and
the tab widget's tab bar rect. But some adjustments are required, since those rects
are anyway adjusted during the rendering and they are not exactly what you'll see on
the screen. Thus this switch-statement inside.
*/
static void clipTabBarFrame(const QStyleOption *option, const QMacStyle *style, CGContextRef ctx)
{
Q_ASSERT(option);
@ -307,7 +320,19 @@ static void clipTabBarFrame(const QStyleOption *option, const QMacStyle *style,
QTabWidget *tabWidget = qobject_cast<QTabWidget *>(option->styleObject);
Q_ASSERT(tabWidget);
const QRect tabBarRect = style->subElementRect(QStyle::SE_TabWidgetTabBar, option, tabWidget).adjusted(2, 2, -3, -2);
QRect tabBarRect = style->subElementRect(QStyle::SE_TabWidgetTabBar, option, tabWidget).adjusted(2, 0, -3, 0);
switch (tabWidget->tabPosition()) {
case QTabWidget::South:
tabBarRect.setY(tabBarRect.y() + tabBarRect.height() / 2);
break;
case QTabWidget::North:
case QTabWidget::West:
tabBarRect = tabBarRect.adjusted(0, 2, 0, -2);
break;
case QTabWidget::East:
tabBarRect = tabBarRect.adjusted(tabBarRect.width() / 2, 2, tabBarRect.width() / 2, -2);
}
const QRegion clipPath = QRegion(option->rect) - tabBarRect;
QVarLengthArray<CGRect, 3> cgRects;
for (const QRect &qtRect : clipPath)
@ -316,6 +341,7 @@ static void clipTabBarFrame(const QStyleOption *option, const QMacStyle *style,
CGContextClipToRects(ctx, &cgRects[0], size_t(cgRects.size()));
}
}
#endif // QT_CONFIG(tabwidget)
static const QColor titlebarSeparatorLineActive(111, 111, 111);
static const QColor titlebarSeparatorLineInactive(131, 131, 131);
@ -3889,6 +3915,7 @@ void QMacStyle::drawControl(ControlElement ce, const QStyleOption *opt, QPainter
const auto cs = d->effectiveAquaSizeConstrain(opt, w);
// Extra hacks to get the proper pressed appreance when not selected or selected and inactive
const bool needsInactiveHack = (!isActive && isSelected);
const bool isBigSurOrAbove = QOperatingSystemVersion::current() >= QOperatingSystemVersion::MacOSBigSur;
const auto ct = !needsInactiveHack && (isSelected || tp == QStyleOptionTab::OnlyOneTab) ?
QMacStylePrivate::Button_PushButton :
QMacStylePrivate::Button_PopupButton;
@ -3897,6 +3924,13 @@ void QMacStyle::drawControl(ControlElement ce, const QStyleOption *opt, QPainter
auto *pb = static_cast<NSButton *>(d->cocoaControl(cw));
auto vOffset = isPopupButton ? 1 : 2;
if (isBigSurOrAbove) {
// Make it 1, otherwise, the offset is very visible compared
// to the selected tab (which is not a popup button, but a
// simple NSButton).
vOffset = 1;
}
if (tabDirection == QMacStylePrivate::East)
vOffset -= 1;
const auto outerAdjust = isPopupButton ? 1 : 4;
@ -3913,9 +3947,23 @@ void QMacStyle::drawControl(ControlElement ce, const QStyleOption *opt, QPainter
frameRect = frameRect.adjusted(-innerAdjust, 0, outerAdjust, 0);
else
frameRect = frameRect.adjusted(-outerAdjust, 0, innerAdjust, 0);
if (isSelected && isBigSurOrAbove) {
// 1 pixed of 'roundness' is still visible on the right
// (the left is OK, it's rounded).
frameRect = frameRect.adjusted(0, 0, 1, 0);
}
break;
case QStyleOptionTab::Middle:
frameRect = frameRect.adjusted(-innerAdjust, 0, innerAdjust, 0);
if (isSelected && isBigSurOrAbove) {
// 1 pixel of 'roundness' is still visible on both
// sides - left and right.
frameRect = frameRect.adjusted(-1, 0, 1, 0);
}
break;
case QStyleOptionTab::End:
// Pressed state hack: tweak adjustments in preparation for flip below
@ -3923,6 +3971,11 @@ void QMacStyle::drawControl(ControlElement ce, const QStyleOption *opt, QPainter
frameRect = frameRect.adjusted(-innerAdjust, 0, outerAdjust, 0);
else
frameRect = frameRect.adjusted(-outerAdjust, 0, innerAdjust, 0);
if (isSelected && isBigSurOrAbove) {
// 1 pixel of 'roundness' is still visible on the left.
frameRect = frameRect.adjusted(-1, 0, 0, 0);
}
break;
case QStyleOptionTab::OnlyOneTab:
frameRect = frameRect.adjusted(-outerAdjust, 0, outerAdjust, 0);
@ -3965,7 +4018,35 @@ void QMacStyle::drawControl(ControlElement ce, const QStyleOption *opt, QPainter
CGContextRotateCTM(ctx, M_PI_2);
}
[pb.cell drawBezelWithFrame:r inView:pb.superview];
// Now, if it's a trick with a popup button, it has an arrow
// which makes no sense on tabs.
NSPopUpArrowPosition oldPosition = NSPopUpArrowAtCenter;
NSPopUpButtonCell *pbCell = nil;
auto rAdjusted = r;
if (isPopupButton && (tp == QStyleOptionTab::OnlyOneTab || isBigSurOrAbove)) {
// Note: starting from macOS BigSur NSPopupButton has this
// arrow 'button' in a different place and it became
// quite visible 'in between' inactive tabs.
pbCell = static_cast<NSPopUpButtonCell *>(pb.cell);
oldPosition = pbCell.arrowPosition;
pbCell.arrowPosition = NSPopUpNoArrow;
if (pb.state == NSControlStateValueOff) {
// NSPopUpButton in this state is smaller.
rAdjusted.origin.x -= 3;
rAdjusted.size.width += 6;
if (isBigSurOrAbove) {
rAdjusted.origin.y -= 1;
rAdjusted.size.height += 1;
if (tp == QStyleOptionTab::End)
rAdjusted.origin.x -= 2;
}
}
}
[pb.cell drawBezelWithFrame:rAdjusted inView:pb.superview];
if (pbCell) // Restore, we may reuse it for a ComboBox.
pbCell.arrowPosition = oldPosition;
};
if (needsInactiveHack) {