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Workaround selection glitches on macOS.

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This commit is contained in:
John Preston 2022-01-18 14:10:46 +03:00
parent d7e47aa8a6
commit 64fa3d83b5
1 changed files with 22 additions and 3 deletions
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25
ui/text/text.cpp
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@ -1719,20 +1719,39 @@ private:
}
if (Q_UNLIKELY(hasSelected)) {
if (Q_UNLIKELY(hasNotSelected)) {
auto clippingEnabled = _p->hasClipping();
auto clippingRegion = _p->clipRegion();
// There is a bug in retina QPainter clipping stack.
// You can see glitches in rendering in such text:
// aA
// Aa
// Where selection is both 'A'-s.
// I can't debug it right now, this is a workaround.
#ifdef Q_OS_MAC
_p->save();
#endif // Q_OS_MAC
const auto clippingEnabled = _p->hasClipping();
const auto clippingRegion = _p->clipRegion();
_p->setClipRect(selectedRect, Qt::IntersectClip);
_p->setPen(*_currentPenSelected);
_p->drawTextItem(QPointF(x.toReal(), textY), gf);
auto externalClipping = clippingEnabled ? clippingRegion : QRegion(QRect((_x - _w).toInt(), _y - _lineHeight, (_x + 2 * _w).toInt(), _y + 2 * _lineHeight));
const auto externalClipping = clippingEnabled
? clippingRegion
: QRegion(QRect(
(_x - _w).toInt(),
_y - _lineHeight,
(_x + 2 * _w).toInt(),
_y + 2 * _lineHeight));
_p->setClipRegion(externalClipping - selectedRect);
_p->setPen(*_currentPen);
_p->drawTextItem(QPointF(x.toReal(), textY), gf);
#ifdef Q_OS_MAC
_p->restore();
#else // Q_OS_MAC
if (clippingEnabled) {
_p->setClipRegion(clippingRegion);
} else {
_p->setClipping(false);
}
#endif // Q_OS_MAC
} else {
_p->setPen(*_currentPenSelected);
_p->drawTextItem(QPointF(x.toReal(), textY), gf);