Details
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Bug
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Resolution: Done
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P1: Critical
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6.3.2, 6.4.0 RC1
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None
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109e088c7c (qt/qtbase/dev) 109e088c7c (qt/tqtc-qtbase/dev) 124a8c20ed (qt/qtbase/6.4) 124a8c20ed (qt/tqtc-qtbase/6.4) bf6cad8ba5 (qt/tqtc-qtbase/6.2)
Description
Setting background colours to a QTableWidgetItem that is used as a horizontal header item in QTableWidget doesn't display correctly in 'fusion' style.
I believe this is due to the `QPalette::cacheKey()` being equal for palette with different background brushes, as in QFusionStyle::drawControl under case CE_HeaderSection: reuses the same cached pixmap for at least some of the header items.
Can be reproduced using the following code added to WidgetGallery::createBottomLeftTabWidget() in the 'styles' example:
tableWidget->setColumnCount(4); const auto headerColours = std::vector<QColor>{Qt::GlobalColor::red, Qt::GlobalColor::blue, Qt::GlobalColor::green}; for (size_t i=0; i<headerColours.size(); ++i) { const auto &colour = headerColours[i]; auto headerItem = new QTableWidgetItem(""); headerItem->setBackground(colour); tableWidget->setHorizontalHeaderItem(i, headerItem); }
When displaying in 'fusion mode' the headers are coloured incorrectly in Qt 6:
In Qt 5 they are displayed correctly:
Attachments
Issue Links
- is duplicated by
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QTBUG-107543 Regression[6.31->6.3.2, 6.26]: backgroundrole in QAbstractTableModel.headerData is broken (release builds only)
- Closed
- resulted in
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QTCREATORBUG-28470 [REG Qt 6.4.0 -> 6.4.1] Arrows in UI are black (instead of white)
- Closed
For Gerrit Dashboard: QTBUG-106984 | ||||||
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# | Subject | Branch | Project | Status | CR | V |
436159,4 | Make sure that palette cache keys are unique | dev | qt/qtbase | Status: MERGED | +2 | 0 |
436357,2 | Make sure that palette cache keys are unique | 6.4 | qt/qtbase | Status: MERGED | +2 | 0 |
436369,4 | Make sure that palette cache keys are unique | tqtc/lts-6.2 | qt/tqtc-qtbase | Status: MERGED | +2 | 0 |