Created attachment 141196 [details] KDE QQC2 Desktop style popup is too wide SUMMARY Popup is wrongly sized when its text contains line breaks. I suppose it is because under the hood a TextMetrics QML Type[1] is used to calculate width of the popup's platform window, but TextMetrics doesn't support line breaks / multi-line text. [1]: https://doc.qt.io/qt-5/qml-qtquick-textmetrics.html STEPS TO REPRODUCE 1. Hover over any item that has a hint popup with multiline text, e.g.: 2. Go to system settings -> Shortcuts -> select any group/category -> select one with existing shortcut or create a new custom one; hover over the shortcut input component. OBSERVED RESULT Two lines of hint text in a popup which is sized like if it were one line joined with a white space instead of \n. EXPECTED RESULT Popup hint should be sized according to its content. SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 5.22.4 KDE Frameworks Version: 5.85.0 Qt Version: 5.15.2 Kernel Version: 5.13.12-arch1-1 (64-bit) Graphics Platform: X11 Processors: 8 × Intel® Core™ i7-6700HQ CPU @ 2.60GHz Memory: 15.6 GiB of RAM Graphics Processor: NVIDIA GeForce GTX 970M/PCIe/SSE2 ADDITIONAL INFORMATION
There is a signal-based API to get natural width of each line as soon as they are being laid out by text renderer. Might use that as a workaround; maybe in conjunction with off-screen rendering first, to prevent glitching and shuttering from fast consecutive resizes. https://bugreports.qt.io/browse/QTBUG-78277 https://doc.qt.io/qt-5/qml-qtquick-text.html#lineLaidOut-signal
Seems like a known bug in Qt: https://bugreports.qt.io/browse/QTBUG-83630 Fix Version/s: 6.1.1, 6.2.0 Alpha
Yep, and it looks like that's already fixed in later versions of Qt.
> Yep, and it looks like that's already fixed in later versions of Qt. Does not seem so. Both commits were reverted due to regressions. We might need to roll out our own font metrics component with proper line breaks / wraps handling. See also: https://t.me/vdgmainroom/296739
Oh, that sucks.