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Fix divide by zero when glyphWidth is 0 

Change-Id: Ic0108b76b8d73cc977f8d64e036a65cb93db4684
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@nokia.com>
bb10
Jiang Jiang 2012-02-27 09:51:46 +01:00 committed by Qt by Nokia
parent c2baf45c73
commit 7df4890d8a
1 changed files with 2 additions and 0 deletions
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src/gui/text/qtextengine.cpp
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@ -2702,6 +2702,8 @@ int QTextEngine::positionInLigature(const QScriptItem *si, int end,
QFixed glyphWidth = glyphs.effectiveAdvance(glyph_pos);
// the approximate width of each individual element of the ligature
QFixed perItemWidth = glyphWidth / clusterLength;
if (perItemWidth <= 0)
return si->position + clusterStart;
QFixed left = x > edge ? edge : edge - glyphWidth;
int n = ((x - left) / perItemWidth).floor().toInt();
QFixed dist = x - left - n * perItemWidth;