diff options
| author | Konstantin Tokarev <annulen@yandex.ru> | 2016-08-03 15:45:02 +0300 |
|---|---|---|
| committer | Konstantin Tokarev <annulen@yandex.ru> | 2016-08-15 18:27:06 +0000 |
| commit | ac1e87d9f373ad649d989f254b37d2f29ddf25fe (patch) | |
| tree | b39d2a1c3d207fd2f025301a4908c472c95245a4 /src/gui/text/qfontengine.cpp | |
| parent | 869513a49f7902b5942e439a972807583dab9bf9 (diff) | |
Added capHeight() to QRawFont and QFontMetrics(F)
Cap height is an important metric of font, in particular it is
required to make decent implementation of "initial-letter"
CSS property in QtWebKit.
Note that some fonts lack cap height metadata, so we need to
fall back to measuring H letter height.
Change-Id: Icf69d92159d070889085e20d31f2e397d796d940
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
Diffstat (limited to 'src/gui/text/qfontengine.cpp')
| -rw-r--r-- | src/gui/text/qfontengine.cpp | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/gui/text/qfontengine.cpp b/src/gui/text/qfontengine.cpp index adc8f634dc..dbd47151bd 100644 --- a/src/gui/text/qfontengine.cpp +++ b/src/gui/text/qfontengine.cpp @@ -418,6 +418,13 @@ glyph_metrics_t QFontEngine::boundingBox(glyph_t glyph, const QTransform &matrix return metrics; } +QFixed QFontEngine::calculatedCapHeight() const +{ + const glyph_t glyph = glyphIndex('H'); + glyph_metrics_t bb = const_cast<QFontEngine *>(this)->boundingBox(glyph); + return bb.height; +} + QFixed QFontEngine::xHeight() const { const glyph_t glyph = glyphIndex('x'); @@ -1703,6 +1710,11 @@ QFixed QFontEngineBox::ascent() const return _size; } +QFixed QFontEngineBox::capHeight() const +{ + return _size; +} + QFixed QFontEngineBox::descent() const { return 0; @@ -2163,6 +2175,9 @@ glyph_metrics_t QFontEngineMulti::boundingBox(glyph_t glyph) QFixed QFontEngineMulti::ascent() const { return engine(0)->ascent(); } +QFixed QFontEngineMulti::capHeight() const +{ return engine(0)->capHeight(); } + QFixed QFontEngineMulti::descent() const { return engine(0)->descent(); } |