https://bugs.kde.org/show_bug.cgi?id=391518
Christoph Feck <cf...@kde.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |CONFIRMED
Ever confirmed|0 |1
--- Comment #1 from Christoph Feck <cf...@kde.org> ---
The issue is that QTextLayout uses QPainter::RasterOp_NotDestination, which
means all pixels that are affected by the cursor rect get inverted. Since the
cursor rect is positioned at fractional positions, usually 3 instead of 2
pixels get inverted.
I suggest to use setRenderHint(QPainter::Antialiasing, false) for the cursor.
This way, the rect rasterization will be pixel-aligned and only the intended 2
pixels get inverted.
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