diff options
Diffstat (limited to 'src/gui/text')
| -rw-r--r-- | src/gui/text/qfontengine_ft.cpp | 25 | ||||
| -rw-r--r-- | src/gui/text/qfontengine_ft_p.h | 3 |
2 files changed, 21 insertions, 7 deletions
diff --git a/src/gui/text/qfontengine_ft.cpp b/src/gui/text/qfontengine_ft.cpp index cb3cb34d27..0a22038bb4 100644 --- a/src/gui/text/qfontengine_ft.cpp +++ b/src/gui/text/qfontengine_ft.cpp @@ -132,6 +132,7 @@ static bool ft_getSfntTable(void *user_data, uint tag, uchar *buffer, uint *leng return result; } +static QFontEngineFT::Glyph emptyGlyph = {0, 0, 0, 0, 0, 0, 0, 0}; // -------------------------- Freetype support ------------------------------ @@ -858,6 +859,9 @@ QFontEngineFT::Glyph *QFontEngineFT::loadGlyph(QGlyphSet *set, uint glyph, if (g && g->format == format && (fetchMetricsOnly || g->data)) return g; + if (!g && set && set->isGlyphMissing(glyph)) + return &emptyGlyph; + QFontEngineFT::GlyphInfo info; Q_ASSERT(format != Format_None); @@ -894,8 +898,12 @@ QFontEngineFT::Glyph *QFontEngineFT::loadGlyph(QGlyphSet *set, uint glyph, load_flags |= FT_LOAD_FORCE_AUTOHINT; err = FT_Load_Glyph(face, glyph, load_flags); } - if (err != FT_Err_Ok) + if (err != FT_Err_Ok) { qWarning("load glyph failed err=%x face=%p, glyph=%d", err, face, glyph); + if (set) + set->setGlyphMissing(glyph); + return &emptyGlyph; + } FT_GlyphSlot slot = face->glyph; @@ -1633,9 +1641,12 @@ void QFontEngineFT::recalcAdvances(QGlyphLayout *glyphs, QFontEngine::ShaperFlag if (!face) face = lockFace(); g = loadGlyph(cacheEnabled ? &defaultGlyphSet : 0, glyphs->glyphs[i], 0, Format_None, true); - glyphs->advances[i] = design ? QFixed::fromFixed(face->glyph->linearHoriAdvance >> 10) - : QFixed::fromFixed(face->glyph->metrics.horiAdvance).round(); - if (!cacheEnabled) + if (g) + glyphs->advances[i] = design ? QFixed::fromFixed(g->linearAdvance) : QFixed(g->advance); + else + glyphs->advances[i] = design ? QFixed::fromFixed(face->glyph->linearHoriAdvance >> 10) + : QFixed::fromFixed(face->glyph->metrics.horiAdvance).round(); + if (!cacheEnabled && g != &emptyGlyph) delete g; } } @@ -1674,7 +1685,7 @@ glyph_metrics_t QFontEngineFT::boundingBox(const QGlyphLayout &glyphs) xmax = qMax(xmax, x + g->width); ymax = qMax(ymax, y + g->height); overall.xoff += g->advance; - if (!cacheEnabled) + if (!cacheEnabled && g != &emptyGlyph) delete g; } else { int left = FLOOR(face->glyph->metrics.horiBearingX); @@ -1717,7 +1728,7 @@ glyph_metrics_t QFontEngineFT::boundingBox(glyph_t glyph) overall.xoff = g->advance; if (fontDef.styleStrategy & QFont::ForceIntegerMetrics) overall.xoff = overall.xoff.round(); - if (!cacheEnabled) + if (!cacheEnabled && g != &emptyGlyph) delete g; } else { int left = FLOOR(face->glyph->metrics.horiBearingX); @@ -1808,7 +1819,7 @@ glyph_metrics_t QFontEngineFT::alphaMapBoundingBox(glyph_t glyph, QFixed subPixe overall.width = g->width; overall.height = g->height; overall.xoff = g->advance; - if (!glyphSet) + if (!glyphSet && g != &emptyGlyph) delete g; } else { int left = FLOOR(face->glyph->metrics.horiBearingX); diff --git a/src/gui/text/qfontengine_ft_p.h b/src/gui/text/qfontengine_ft_p.h index 09c70c5083..e23024e472 100644 --- a/src/gui/text/qfontengine_ft_p.h +++ b/src/gui/text/qfontengine_ft_p.h @@ -187,8 +187,11 @@ public: inline Glyph *getGlyph(glyph_t index, QFixed subPixelPosition = 0) const; void setGlyph(glyph_t index, QFixed spp, Glyph *glyph); + inline bool isGlyphMissing(glyph_t index) const { return missing_glyphs.contains(index); } + inline void setGlyphMissing(glyph_t index) const { missing_glyphs.insert(index); } private: mutable QHash<GlyphAndSubPixelPosition, Glyph *> glyph_data; // maps from glyph index to glyph data + mutable QSet<glyph_t> missing_glyphs; mutable Glyph *fast_glyph_data[256]; // for fast lookup of glyphs < 256 mutable int fast_glyph_count; }; |