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| author | Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@nokia.com> | 2010-03-30 08:05:10 (GMT) |
|---|---|---|
| committer | Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@nokia.com> | 2010-03-30 08:44:30 (GMT) |
| commit | 1acc9bcf4c43851af2096539eda88da9ef58bce3 (patch) | |
| tree | 133abe6263c13e497a1bc1b48ee902f44e71dd1b /src/gui | |
| parent | e925d5ebed4b319c57c1a3097a0e25c9cd562bcb (diff) | |
| download | Qt-1acc9bcf4c43851af2096539eda88da9ef58bce3.zip Qt-1acc9bcf4c43851af2096539eda88da9ef58bce3.tar.gz Qt-1acc9bcf4c43851af2096539eda88da9ef58bce3.tar.bz2 | |
Avoid taking sqrt of negative number in FT font engine
When using a reflecting matrix, the determinant will be -1, thus the
call to sqrt() will return NaN. Same fix as in 0fa878c4d2.
Task-number: QTBUG-9442
Reviewed-by: Trond
Diffstat (limited to 'src/gui')
| -rw-r--r-- | src/gui/text/qfontengine_ft.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/gui/text/qfontengine_ft.cpp b/src/gui/text/qfontengine_ft.cpp index a9def8e..449dffd 100644 --- a/src/gui/text/qfontengine_ft.cpp +++ b/src/gui/text/qfontengine_ft.cpp @@ -1368,7 +1368,7 @@ QFontEngineFT::QGlyphSet *QFontEngineFT::loadTransformedGlyphSet(const QTransfor if (!gs) { // don't try to load huge fonts - bool draw_as_outline = fontDef.pixelSize * qSqrt(matrix.det()) >= 64; + bool draw_as_outline = fontDef.pixelSize * qSqrt(qAbs(matrix.det())) >= 64; if (draw_as_outline) return 0; |