Details
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Bug
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Resolution: Done
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P3: Somewhat important
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5.6.0
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None
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95c9a0376e6e27e46ea5ad67349af0089bd2f981
Description
See the summary – basically a movable QTabBar will create a dummy widget to animate the tab that it's being dragged. That dummy widget gets rendered using non-hidpi factors resulting in blurry icons and text. Relevant code from qtabbar.cpp:
QPixmap grabImage(grabRect.size());
grabImage.fill(Qt::transparent);
QStylePainter p(&grabImage, q);
p.initFrom(q);
QStyleOptionTab tab;
q->initStyleOption(&tab, pressedIndex);
tab.rect.moveTopLeft(QPoint(taboverlap, 0));
p.drawControl(QStyle::CE_TabBarTab, tab);
p.end();
Perhaps some devicePixelRatio call is missing?