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Task
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Resolution: Done
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P3: Somewhat important
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5.11
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None
Accelerated scrolling in widgets is disabled when scrolled widget is overlapped by other widget(s). It it possible to remove this limitation.
Common use cases:
- faster scrolling when using "StyleHint::SH_ScrollBar_Transient",
- faster scrolling of zoomed image with semi-transparent thumbnail.
The attachment (QTBUG-64504.zip) contains testing software for QWidgetPrivate::moveRect() function. It can toggle overlay widgets, start a simple benchmark or toggle QOpenGLWidget. Performance can be tested together with commit from QTBUG-64414 on X11 platform, otherwise the difference will be negligible. Toggling QOpenGLWidget is useful for testing stability of QTBUG-64414.
The attachment (QTBUG-64504-scrollrect.zip) contains testing software for QWidgetPrivate::scrollRect() function. This software contains less functionality, but it can check if the second scrolling function also works properly.
- resulted in
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QTBUG-98151 Widgets over a QMdiArea are not repainted correctly
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- Closed
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| For Gerrit Dashboard: QTBUG-64504 | ||||||
|---|---|---|---|---|---|---|
| # | Subject | Branch | Project | Status | CR | V |
| 211075,9 | Widgets: Use accelerated scroll when scrolled widget is overlapped | dev | qt/qtbase | Status: MERGED | -2 | 0 |
| 374598,5 | xcb: Flush scrolled region of backingstore to client when requesting image | dev | qt/qtbase | Status: MERGED | +2 | 0 |
| 375308,2 | xcb: Flush scrolled region of backingstore to client when requesting image | 6.2 | qt/qtbase | Status: MERGED | +2 | 0 |