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Limit curve stroking threshold to reasonable range 

Avoid unreasonable threshold values for extremely wide pens, since
that can lead to a very high processing cost.

The rare usecases where this would make a noticeable difference will
necessarily also be using scaling, and so is anyway depending on
setting a suitable curve threshold manually.

Fixes: QTBUG-77241
Change-Id: I27cea7d566d144389bb430739fde4f6033c4a28c
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
bb10
Eirik Aavitsland 2019-08-13 12:11:40 +02:00
parent 63abcfcade
commit 5322998a0b
1 changed files with 1 additions and 1 deletions
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2
src/gui/painting/qstroker_p.h
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@ -209,7 +209,7 @@ public:
QStroker();
~QStroker();
void setStrokeWidth(qfixed width) { m_strokeWidth = width; m_curveThreshold = qt_real_to_fixed(width > 4 ? 1.0/width : 0.25); }
void setStrokeWidth(qfixed width) { m_strokeWidth = width; m_curveThreshold = qt_real_to_fixed(qBound(0.025, 1.0/width, 0.25)); }
qfixed strokeWidth() const { return m_strokeWidth; }
void setCapStyle(Qt::PenCapStyle capStyle) { m_capStyle = joinModeForCap(capStyle); }