6c4dc722cb
For a widget that implements height-for-width, the vertical scrollbar becoming visible might be just enough to make the scrollbar unnecessary. In that situation, the scrollbar flips on and off continuously. To avoid that situation, make the width of the widget smaller until the height fits without scrollbar, up to the point where we have space for the scrollbar anyway. The calcuation here is assumed to be cheap, but depends on the heightForWidth implementation in the widget. Running the while-loop a few dozen times should have no performance impact during resizing and laying out the scroll area contents. Add a test that confirms that within a brief period of time we only get the one hide-event we expect. Done-with: Zou Ya <zouya@uniontech.com> Fixes: QTBUG-92958 Pick-to: 6.2 5.15 Change-Id: I0faeb5f9b1a226aada958c18333d9c2ac8203dd1 Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io> |
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| .. | ||
| dialogs | ||
| effects | ||
| graphicsview | ||
| itemviews | ||
| kernel | ||
| styles | ||
| util | ||
| widgets | ||
| CMakeLists.txt | ||