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/platformsupport/fontdatabases | |
| 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/platformsupport/fontdatabases')
| -rw-r--r-- | src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm | 13 | ||||
| -rw-r--r-- | src/platformsupport/fontdatabases/mac/qfontengine_coretext_p.h | 1 |
2 files changed, 14 insertions, 0 deletions
diff --git a/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm b/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm index 339212db25..646212124b 100644 --- a/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm +++ b/src/platformsupport/fontdatabases/mac/qfontengine_coretext.mm @@ -378,6 +378,19 @@ QFixed QCoreTextFontEngine::ascent() const ? QFixed::fromReal(CTFontGetAscent(ctfont)).round() : QFixed::fromReal(CTFontGetAscent(ctfont)); } + +QFixed QCoreTextFontEngine::capHeight() const +{ + QFixed c = QFixed::fromReal(CTFontGetCapHeight(ctfont)); + if (c <= 0) + return calculatedCapHeight(); + + if (fontDef.styleStrategy & QFont::ForceIntegerMetrics) + c = c.round(); + + return c; +} + QFixed QCoreTextFontEngine::descent() const { QFixed d = QFixed::fromReal(CTFontGetDescent(ctfont)); diff --git a/src/platformsupport/fontdatabases/mac/qfontengine_coretext_p.h b/src/platformsupport/fontdatabases/mac/qfontengine_coretext_p.h index b7c9edc528..d9ffbb5697 100644 --- a/src/platformsupport/fontdatabases/mac/qfontengine_coretext_p.h +++ b/src/platformsupport/fontdatabases/mac/qfontengine_coretext_p.h @@ -78,6 +78,7 @@ public: glyph_metrics_t boundingBox(glyph_t glyph) Q_DECL_OVERRIDE; QFixed ascent() const Q_DECL_OVERRIDE; + QFixed capHeight() const Q_DECL_OVERRIDE; QFixed descent() const Q_DECL_OVERRIDE; QFixed leading() const Q_DECL_OVERRIDE; QFixed xHeight() const Q_DECL_OVERRIDE; |