From c5f3ea858679d07d753e29af87f04efadd7683e9 Mon Sep 17 00:00:00 2001 From: Jiang Jiang Date: Fri, 8 Jul 2011 13:39:36 +0200 Subject: Use truncate only for subpixel boundingBox x position Since Lion, Core Text starts to return fractional values for x origin in the glyph bounding box. To get correct alignment we need to make it integer, it seems that round will cut certain pixels (x = 0.6 will be round to 1, then that glyph will be moved too much to the left in image glyph cache). Reverting 4297b85a appears to work fine on previous version of Mac OS X as well. This change will not affect Windows (DirectWrite) and FreeType font engines since they both return integer values for that. Reviewed-by: Eskil --- src/gui/painting/qtextureglyphcache.cpp | 2 +- src/gui/text/qfontengine_coretext.mm | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/src/gui/painting/qtextureglyphcache.cpp b/src/gui/painting/qtextureglyphcache.cpp index abd0ed1..3973abd 100644 --- a/src/gui/painting/qtextureglyphcache.cpp +++ b/src/gui/painting/qtextureglyphcache.cpp @@ -198,7 +198,7 @@ bool QTextureGlyphCache::populate(QFontEngine *fontEngine, int numGlyphs, const Coord c = { 0, 0, // will be filled in later glyph_width, glyph_height, // texture coords - metrics.x.round().truncate(), + metrics.x.truncate(), -metrics.y.truncate() }; // baseline for horizontal scripts listItemCoordinates.insert(key, c); diff --git a/src/gui/text/qfontengine_coretext.mm b/src/gui/text/qfontengine_coretext.mm index 6a9201d..64d4a24 100644 --- a/src/gui/text/qfontengine_coretext.mm +++ b/src/gui/text/qfontengine_coretext.mm @@ -751,7 +751,7 @@ QImage QCoreTextFontEngine::imageForGlyph(glyph_t glyph, QFixed subPixelPosition CGContextSetFont(ctx, cgFont); - qreal pos_x = -br.x.round().truncate() + subPixelPosition.toReal(); + qreal pos_x = -br.x.truncate() + subPixelPosition.toReal(); qreal pos_y = im.height() + br.y.toReal(); CGContextSetTextPosition(ctx, pos_x, pos_y); -- cgit v0.12 From 1f90ae36cff8acf581d1624bf011fe3a55c623c0 Mon Sep 17 00:00:00 2001 From: Jiang Jiang Date: Fri, 8 Jul 2011 17:40:43 +0200 Subject: Fix crash when app font is added Loading app fonts will clear the application font cache, but QFontPrivate::engineWithScript will try to load the font again, in Mac the font engine used here must be the one used for shaping, because subsequent sub font engines may be added to it during the shaping process (QCoreTextFontEngineMulti::stringToCMap). That is why we need to fetch the font engine directly from QTextEngine's fontEngine cache instead of QFontCache. Task-number: QTBUG-20250 Reviewed-by: Eskil --- src/gui/text/qtextengine.cpp | 35 +++++++++++++++++++++-------------- src/gui/text/qtextengine_p.h | 4 +++- src/gui/text/qtextlayout.cpp | 8 ++++---- 3 files changed, 28 insertions(+), 19 deletions(-) diff --git a/src/gui/text/qtextengine.cpp b/src/gui/text/qtextengine.cpp index 8ddf3eb..c900918 100644 --- a/src/gui/text/qtextengine.cpp +++ b/src/gui/text/qtextengine.cpp @@ -3051,6 +3051,22 @@ QTextItemInt::QTextItemInt(const QScriptItem &si, QFont *font, const QTextCharFo : justified(false), underlineStyle(QTextCharFormat::NoUnderline), charFormat(format), num_chars(0), chars(0), logClusters(0), f(0), fontEngine(0) { + f = font; + fontEngine = f->d->engineForScript(si.analysis.script); + Q_ASSERT(fontEngine); + + initWithScriptItem(si); +} + +QTextItemInt::QTextItemInt(const QGlyphLayout &g, QFont *font, const QChar *chars_, int numChars, QFontEngine *fe, const QTextCharFormat &format) + : flags(0), justified(false), underlineStyle(QTextCharFormat::NoUnderline), charFormat(format), + num_chars(numChars), chars(chars_), logClusters(0), f(font), glyphs(g), fontEngine(fe) +{ +} + +// Fix up flags and underlineStyle with given info +void QTextItemInt::initWithScriptItem(const QScriptItem &si) +{ // explicitly initialize flags so that initFontAttributes can be called // multiple times on the same TextItem flags = 0; @@ -3058,13 +3074,10 @@ QTextItemInt::QTextItemInt(const QScriptItem &si, QFont *font, const QTextCharFo flags |= QTextItem::RightToLeft; ascent = si.ascent; descent = si.descent; - f = font; - fontEngine = f->d->engineForScript(si.analysis.script); - Q_ASSERT(fontEngine); - if (format.hasProperty(QTextFormat::TextUnderlineStyle)) { - underlineStyle = format.underlineStyle(); - } else if (format.boolProperty(QTextFormat::FontUnderline) + if (charFormat.hasProperty(QTextFormat::TextUnderlineStyle)) { + underlineStyle = charFormat.underlineStyle(); + } else if (charFormat.boolProperty(QTextFormat::FontUnderline) || f->d->underline) { underlineStyle = QTextCharFormat::SingleUnderline; } @@ -3073,18 +3086,12 @@ QTextItemInt::QTextItemInt(const QScriptItem &si, QFont *font, const QTextCharFo if (underlineStyle == QTextCharFormat::SingleUnderline) flags |= QTextItem::Underline; - if (f->d->overline || format.fontOverline()) + if (f->d->overline || charFormat.fontOverline()) flags |= QTextItem::Overline; - if (f->d->strikeOut || format.fontStrikeOut()) + if (f->d->strikeOut || charFormat.fontStrikeOut()) flags |= QTextItem::StrikeOut; } -QTextItemInt::QTextItemInt(const QGlyphLayout &g, QFont *font, const QChar *chars_, int numChars, QFontEngine *fe) - : flags(0), justified(false), underlineStyle(QTextCharFormat::NoUnderline), - num_chars(numChars), chars(chars_), logClusters(0), f(font), glyphs(g), fontEngine(fe) -{ -} - QTextItemInt QTextItemInt::midItem(QFontEngine *fontEngine, int firstGlyphIndex, int numGlyphs) const { QTextItemInt ti = *this; diff --git a/src/gui/text/qtextengine_p.h b/src/gui/text/qtextengine_p.h index 055974a..b1bd0c3 100644 --- a/src/gui/text/qtextengine_p.h +++ b/src/gui/text/qtextengine_p.h @@ -312,11 +312,13 @@ public: logClusters(0), f(0), fontEngine(0) {} QTextItemInt(const QScriptItem &si, QFont *font, const QTextCharFormat &format = QTextCharFormat()); - QTextItemInt(const QGlyphLayout &g, QFont *font, const QChar *chars, int numChars, QFontEngine *fe); + QTextItemInt(const QGlyphLayout &g, QFont *font, const QChar *chars, int numChars, QFontEngine *fe, + const QTextCharFormat &format = QTextCharFormat()); /// copy the structure items, adjusting the glyphs arrays to the right subarrays. /// the width of the returned QTextItemInt is not adjusted, for speed reasons QTextItemInt midItem(QFontEngine *fontEngine, int firstGlyphIndex, int numGlyphs) const; + void initWithScriptItem(const QScriptItem &si); QFixed descent; QFixed ascent; diff --git a/src/gui/text/qtextlayout.cpp b/src/gui/text/qtextlayout.cpp index c1bc846..2d5b453 100644 --- a/src/gui/text/qtextlayout.cpp +++ b/src/gui/text/qtextlayout.cpp @@ -2381,13 +2381,13 @@ void QTextLine::draw(QPainter *p, const QPointF &pos, const QTextLayout::FormatR unsigned short *logClusters = eng->logClusters(&si); QGlyphLayout glyphs = eng->shapedGlyphs(&si); - QTextItemInt gf(si, &f, format); - gf.glyphs = glyphs.mid(iterator.glyphsStart, iterator.glyphsEnd - iterator.glyphsStart); - gf.chars = eng->layoutData->string.unicode() + iterator.itemStart; + QTextItemInt gf(glyphs.mid(iterator.glyphsStart, iterator.glyphsEnd - iterator.glyphsStart), + &f, eng->layoutData->string.unicode() + iterator.itemStart, + iterator.itemEnd - iterator.itemStart, eng->fontEngine(si), format); gf.logClusters = logClusters + iterator.itemStart - si.position; - gf.num_chars = iterator.itemEnd - iterator.itemStart; gf.width = iterator.itemWidth; gf.justified = line.justified; + gf.initWithScriptItem(si); Q_ASSERT(gf.fontEngine); -- cgit v0.12