diff options
author | Liang Qi <liang.qi@qt.io> | 2016-08-09 17:59:51 +0200 |
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committer | Liang Qi <liang.qi@qt.io> | 2016-08-09 17:59:51 +0200 |
commit | 22e96c4d342de3bfe4fc27f4cd7233edcfe737cc (patch) | |
tree | 6bdd02cdd8603cf16383fb339a2cfdbce82491da /src/gui/text/qfontengine_ft.cpp | |
parent | bd79c4e28c307ba87aca02155b845774c7ffec1f (diff) | |
parent | fa95eb055401f5264cbc6aca761cb9b5feb4affc (diff) |
Merge remote-tracking branch 'origin/5.7' into dev
Change-Id: I36e6b890b65d12bf6931757540bcc9c553b5eb8f
Diffstat (limited to 'src/gui/text/qfontengine_ft.cpp')
-rw-r--r-- | src/gui/text/qfontengine_ft.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/gui/text/qfontengine_ft.cpp b/src/gui/text/qfontengine_ft.cpp index 51b1418bc3..75e30b9552 100644 --- a/src/gui/text/qfontengine_ft.cpp +++ b/src/gui/text/qfontengine_ft.cpp @@ -1827,7 +1827,7 @@ glyph_metrics_t QFontEngineFT::alphaMapBoundingBox(glyph_t glyph, QFixed subPixe static inline QImage alphaMapFromGlyphData(QFontEngineFT::Glyph *glyph, QFontEngine::GlyphFormat glyphFormat) { - if (glyph == Q_NULLPTR) + if (glyph == Q_NULLPTR || glyph->height == 0 || glyph->width == 0) return QImage(); QImage::Format format = QImage::Format_Invalid; @@ -1875,11 +1875,15 @@ QImage *QFontEngineFT::lockedAlphaMapForGlyph(glyph_t glyphIndex, QFixed subPixe currentlyLockedAlphaMap = alphaMapFromGlyphData(glyph, neededFormat); + const bool glyphHasGeometry = glyph != Q_NULLPTR && glyph->height != 0 && glyph->width != 0; if (!cacheEnabled && glyph != &emptyGlyph) { currentlyLockedAlphaMap = currentlyLockedAlphaMap.copy(); delete glyph; } + if (!glyphHasGeometry) + return Q_NULLPTR; + if (currentlyLockedAlphaMap.isNull()) return QFontEngine::lockedAlphaMapForGlyph(glyphIndex, subPixelPosition, neededFormat, t, offset); |