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author | Qt Continuous Integration System <qt-info@nokia.com> | 2010-03-18 04:27:25 (GMT) |
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committer | Qt Continuous Integration System <qt-info@nokia.com> | 2010-03-18 04:27:25 (GMT) |
commit | 4dd9931c91aed711a888fb108f9f7225fd3e8045 (patch) | |
tree | 8a577565d6ba4fab08d48dbd8b93845fdcc80bc6 /src | |
parent | d3c8da01258a963c80f888f4acee722a84618db3 (diff) | |
parent | 91b29b3b00ba9292cfcbeb2ac93c4b1f7bed2bd6 (diff) | |
download | Qt-4dd9931c91aed711a888fb108f9f7225fd3e8045.zip Qt-4dd9931c91aed711a888fb108f9f7225fd3e8045.tar.gz Qt-4dd9931c91aed711a888fb108f9f7225fd3e8045.tar.bz2 |
Merge branch '4.6' of scm.dev.nokia.troll.no:qt/oslo-staging-2 into 4.6-integration
* '4.6' of scm.dev.nokia.troll.no:qt/oslo-staging-2:
Optimize getting bearings of a glyph on Windows for true type fonts
Fixes blending problem when paiting non-opaque items with cache enabled.
Optimize speed of QTextLayout and QPainter::drawText
Fix a crash in animation groups when deleting uncontrolled animations
Diffstat (limited to 'src')
-rw-r--r-- | src/corelib/animation/qanimationgroup.cpp | 4 | ||||
-rw-r--r-- | src/corelib/animation/qanimationgroup_p.h | 15 | ||||
-rw-r--r-- | src/corelib/animation/qparallelanimationgroup.cpp | 15 | ||||
-rw-r--r-- | src/corelib/animation/qparallelanimationgroup_p.h | 2 | ||||
-rw-r--r-- | src/corelib/animation/qsequentialanimationgroup.cpp | 13 | ||||
-rw-r--r-- | src/corelib/animation/qsequentialanimationgroup_p.h | 2 | ||||
-rw-r--r-- | src/gui/graphicsview/qgraphicsscene.cpp | 6 | ||||
-rw-r--r-- | src/gui/text/qfontengine.cpp | 14 | ||||
-rw-r--r-- | src/gui/text/qfontengine_p.h | 3 | ||||
-rw-r--r-- | src/gui/text/qfontengine_win.cpp | 24 | ||||
-rw-r--r-- | src/gui/text/qfontengine_win_p.h | 2 | ||||
-rw-r--r-- | src/gui/text/qfontmetrics.cpp | 21 | ||||
-rw-r--r-- | src/gui/text/qtextlayout.cpp | 122 |
13 files changed, 179 insertions, 64 deletions
diff --git a/src/corelib/animation/qanimationgroup.cpp b/src/corelib/animation/qanimationgroup.cpp index a89f949..2decda3 100644 --- a/src/corelib/animation/qanimationgroup.cpp +++ b/src/corelib/animation/qanimationgroup.cpp @@ -244,7 +244,7 @@ QAbstractAnimation *QAnimationGroup::takeAnimation(int index) // in ChildRemoved event d->animations.removeAt(index); animation->setParent(0); - d->animationRemovedAt(index); + d->animationRemoved(index, animation); return animation; } @@ -285,7 +285,7 @@ bool QAnimationGroup::event(QEvent *event) } -void QAnimationGroupPrivate::animationRemovedAt(int index) +void QAnimationGroupPrivate::animationRemoved(int index, QAbstractAnimation *) { Q_Q(QAnimationGroup); Q_UNUSED(index); diff --git a/src/corelib/animation/qanimationgroup_p.h b/src/corelib/animation/qanimationgroup_p.h index 394773b..45603b3 100644 --- a/src/corelib/animation/qanimationgroup_p.h +++ b/src/corelib/animation/qanimationgroup_p.h @@ -72,8 +72,19 @@ public: isGroup = true; } - virtual void animationInsertedAt(int index) { Q_UNUSED(index) }; - virtual void animationRemovedAt(int index); + virtual void animationInsertedAt(int) { } + virtual void animationRemoved(int, QAbstractAnimation *); + + void disconnectUncontrolledAnimation(QAbstractAnimation *anim) + { + //0 for the signal here because we might be called from the animation destructor + QObject::disconnect(anim, 0, q_func(), SLOT(_q_uncontrolledAnimationFinished())); + } + + void connectUncontrolledAnimation(QAbstractAnimation *anim) + { + QObject::connect(anim, SIGNAL(finished()), q_func(), SLOT(_q_uncontrolledAnimationFinished())); + } QList<QAbstractAnimation *> animations; }; diff --git a/src/corelib/animation/qparallelanimationgroup.cpp b/src/corelib/animation/qparallelanimationgroup.cpp index eaa0364..280afed 100644 --- a/src/corelib/animation/qparallelanimationgroup.cpp +++ b/src/corelib/animation/qparallelanimationgroup.cpp @@ -246,11 +246,9 @@ void QParallelAnimationGroupPrivate::_q_uncontrolledAnimationFinished() void QParallelAnimationGroupPrivate::disconnectUncontrolledAnimations() { - Q_Q(QParallelAnimationGroup); - QHash<QAbstractAnimation *, int>::iterator it = uncontrolledFinishTime.begin(); while (it != uncontrolledFinishTime.end()) { - QObject::disconnect(it.key(), SIGNAL(finished()), q, SLOT(_q_uncontrolledAnimationFinished())); + disconnectUncontrolledAnimation(it.key()); ++it; } @@ -259,13 +257,11 @@ void QParallelAnimationGroupPrivate::disconnectUncontrolledAnimations() void QParallelAnimationGroupPrivate::connectUncontrolledAnimations() { - Q_Q(QParallelAnimationGroup); - for (int i = 0; i < animations.size(); ++i) { QAbstractAnimation *animation = animations.at(i); if (animation->duration() == -1 || animation->loopCount() < 0) { uncontrolledFinishTime[animation] = -1; - QObject::connect(animation, SIGNAL(finished()), q, SLOT(_q_uncontrolledAnimationFinished())); + connectUncontrolledAnimation(animation); } } } @@ -305,6 +301,13 @@ bool QParallelAnimationGroupPrivate::isUncontrolledAnimationFinished(QAbstractAn return uncontrolledFinishTime.value(anim, -1) >= 0; } +void QParallelAnimationGroupPrivate::animationRemoved(int index, QAbstractAnimation *anim) +{ + QAnimationGroupPrivate::animationRemoved(index, anim); + disconnectUncontrolledAnimation(anim); + uncontrolledFinishTime.remove(anim); +} + /*! \reimp */ diff --git a/src/corelib/animation/qparallelanimationgroup_p.h b/src/corelib/animation/qparallelanimationgroup_p.h index a74d496..cab4fa9 100644 --- a/src/corelib/animation/qparallelanimationgroup_p.h +++ b/src/corelib/animation/qparallelanimationgroup_p.h @@ -80,6 +80,8 @@ public: void connectUncontrolledAnimations(); void disconnectUncontrolledAnimations(); + void animationRemoved(int index, QAbstractAnimation *); + // private slot void _q_uncontrolledAnimationFinished(); }; diff --git a/src/corelib/animation/qsequentialanimationgroup.cpp b/src/corelib/animation/qsequentialanimationgroup.cpp index 8ab084a..7617c1f 100644 --- a/src/corelib/animation/qsequentialanimationgroup.cpp +++ b/src/corelib/animation/qsequentialanimationgroup.cpp @@ -479,7 +479,7 @@ void QSequentialAnimationGroupPrivate::activateCurrentAnimation(bool intermediat // connects to the finish signal of uncontrolled animations if (currentAnimation->totalDuration() == -1) - QObject::connect(currentAnimation, SIGNAL(finished()), q, SLOT(_q_uncontrolledAnimationFinished())); + connectUncontrolledAnimation(currentAnimation); currentAnimation->start(); if (!intermediate && state == QSequentialAnimationGroup::Paused) @@ -496,7 +496,7 @@ void QSequentialAnimationGroupPrivate::_q_uncontrolledAnimationFinished() actualDuration.append(-1); actualDuration[currentAnimationIndex] = currentAnimation->currentTime(); - QObject::disconnect(currentAnimation, SIGNAL(finished()), q, SLOT(_q_uncontrolledAnimationFinished())); + disconnectUncontrolledAnimation(currentAnimation); if ((direction == QAbstractAnimation::Forward && currentAnimation == animations.last()) || (direction == QAbstractAnimation::Backward && currentAnimationIndex == 0)) { @@ -543,10 +543,10 @@ void QSequentialAnimationGroupPrivate::animationInsertedAt(int index) the group at index \a index. The animation is no more listed when this method is called. */ -void QSequentialAnimationGroupPrivate::animationRemovedAt(int index) +void QSequentialAnimationGroupPrivate::animationRemoved(int index, QAbstractAnimation *anim) { Q_Q(QSequentialAnimationGroup); - QAnimationGroupPrivate::animationRemovedAt(index); + QAnimationGroupPrivate::animationRemoved(index, anim); Q_ASSERT(currentAnimation); // currentAnimation should always be set @@ -555,7 +555,10 @@ void QSequentialAnimationGroupPrivate::animationRemovedAt(int index) const int currentIndex = animations.indexOf(currentAnimation); if (currentIndex == -1) { - //we're removing the current animation, let's update it to another one + //we're removing the current animation + + disconnectUncontrolledAnimation(currentAnimation); + if (index < animations.count()) setCurrentAnimation(index); //let's try to take the next one else if (index > 0) diff --git a/src/corelib/animation/qsequentialanimationgroup_p.h b/src/corelib/animation/qsequentialanimationgroup_p.h index a55e136..de69916 100644 --- a/src/corelib/animation/qsequentialanimationgroup_p.h +++ b/src/corelib/animation/qsequentialanimationgroup_p.h @@ -85,7 +85,7 @@ public: void activateCurrentAnimation(bool intermediate = false); void animationInsertedAt(int index); - void animationRemovedAt(int index); + void animationRemoved(int index, QAbstractAnimation *anim); bool atEnd() const; diff --git a/src/gui/graphicsview/qgraphicsscene.cpp b/src/gui/graphicsview/qgraphicsscene.cpp index 4ee2301..6934abc 100644 --- a/src/gui/graphicsview/qgraphicsscene.cpp +++ b/src/gui/graphicsview/qgraphicsscene.cpp @@ -4285,6 +4285,12 @@ static void _q_paintIntoCache(QPixmap *pix, QGraphicsItem *item, const QRegion & if (!subPix.isNull()) { // Blit the subpixmap into the main pixmap. pixmapPainter.begin(pix); + if (item->cacheMode() == QGraphicsItem::DeviceCoordinateCache + && itemToPixmap.type() > QTransform::TxTranslate) { + pixmapPainter.setCompositionMode(QPainter::CompositionMode_SourceAtop); + } else { + pixmapPainter.setCompositionMode(QPainter::CompositionMode_Source); + } pixmapPainter.setClipRegion(pixmapExposed); pixmapPainter.drawPixmap(br.topLeft(), subPix); pixmapPainter.end(); diff --git a/src/gui/text/qfontengine.cpp b/src/gui/text/qfontengine.cpp index c000457..3ec389f 100644 --- a/src/gui/text/qfontengine.cpp +++ b/src/gui/text/qfontengine.cpp @@ -379,6 +379,14 @@ void QFontEngine::getGlyphPositions(const QGlyphLayout &glyphs, const QTransform Q_ASSERT(positions.size() == glyphs_out.size()); } +void QFontEngine::getGlyphBearings(glyph_t glyph, qreal *leftBearing, qreal *rightBearing) +{ + glyph_metrics_t gi = boundingBox(glyph); + if (leftBearing != 0) + *leftBearing = gi.x.toReal(); + if (rightBearing != 0) + *rightBearing = (gi.xoff - gi.x - gi.width).toReal(); +} glyph_metrics_t QFontEngine::tightBoundingBox(const QGlyphLayout &glyphs) { @@ -1385,6 +1393,12 @@ glyph_metrics_t QFontEngineMulti::boundingBox(const QGlyphLayout &glyphs) return overall; } +void QFontEngineMulti::getGlyphBearings(glyph_t glyph, qreal *leftBearing, qreal *rightBearing) +{ + int which = highByte(glyph); + engine(which)->getGlyphBearings(stripped(glyph), leftBearing, rightBearing); +} + void QFontEngineMulti::addOutlineToPath(qreal x, qreal y, const QGlyphLayout &glyphs, QPainterPath *path, QTextItem::RenderFlags flags) { diff --git a/src/gui/text/qfontengine_p.h b/src/gui/text/qfontengine_p.h index 71ab5a5..e645caf 100644 --- a/src/gui/text/qfontengine_p.h +++ b/src/gui/text/qfontengine_p.h @@ -206,6 +206,8 @@ public: virtual qreal minLeftBearing() const { return qreal(); } virtual qreal minRightBearing() const { return qreal(); } + virtual void getGlyphBearings(glyph_t glyph, qreal *leftBearing = 0, qreal *rightBearing = 0); + virtual const char *name() const = 0; virtual bool canRender(const QChar *string, int len) = 0; @@ -374,6 +376,7 @@ public: virtual void recalcAdvances(QGlyphLayout *, QTextEngine::ShaperFlags) const; virtual void doKerning(QGlyphLayout *, QTextEngine::ShaperFlags) const; virtual void addOutlineToPath(qreal, qreal, const QGlyphLayout &, QPainterPath *, QTextItem::RenderFlags flags); + virtual void getGlyphBearings(glyph_t glyph, qreal *leftBearing = 0, qreal *rightBearing = 0); virtual QFixed ascent() const; virtual QFixed descent() const; diff --git a/src/gui/text/qfontengine_win.cpp b/src/gui/text/qfontengine_win.cpp index 1a815d3..a133b48 100644 --- a/src/gui/text/qfontengine_win.cpp +++ b/src/gui/text/qfontengine_win.cpp @@ -649,6 +649,30 @@ static const ushort char_table[] = { static const int char_table_entries = sizeof(char_table)/sizeof(ushort); +void QFontEngineWin::getGlyphBearings(glyph_t glyph, qreal *leftBearing, qreal *rightBearing) +{ + HDC hdc = shared_dc(); + SelectObject(hdc, hfont); + +#ifndef Q_WS_WINCE + if (ttf) +#endif + + { + ABC abcWidths; + GetCharABCWidthsI(hdc, glyph, 1, 0, &abcWidths); + if (leftBearing) + *leftBearing = abcWidths.abcA; + if (rightBearing) + *rightBearing = abcWidths.abcC; + } + +#ifndef Q_WS_WINCE + else { + QFontEngine::getGlyphBearings(glyph, leftBearing, rightBearing); + } +#endif +} qreal QFontEngineWin::minLeftBearing() const { diff --git a/src/gui/text/qfontengine_win_p.h b/src/gui/text/qfontengine_win_p.h index f9d8f8b..f19e48e 100644 --- a/src/gui/text/qfontengine_win_p.h +++ b/src/gui/text/qfontengine_win_p.h @@ -106,6 +106,8 @@ public: virtual QImage alphaMapForGlyph(glyph_t, const QTransform &xform); virtual QImage alphaRGBMapForGlyph(glyph_t t, int margin, const QTransform &xform); + virtual void getGlyphBearings(glyph_t glyph, qreal *leftBearing = 0, qreal *rightBearing = 0); + int getGlyphIndexes(const QChar *ch, int numChars, QGlyphLayout *glyphs, bool mirrored) const; void getCMap(); diff --git a/src/gui/text/qfontmetrics.cpp b/src/gui/text/qfontmetrics.cpp index 41d0af1..44a18de 100644 --- a/src/gui/text/qfontmetrics.cpp +++ b/src/gui/text/qfontmetrics.cpp @@ -472,8 +472,9 @@ int QFontMetrics::leftBearing(QChar ch) const int nglyphs = 9; engine->stringToCMap(&ch, 1, &glyphs, &nglyphs, 0); // ### can nglyphs != 1 happen at all? Not currently I think - glyph_metrics_t gi = engine->boundingBox(glyphs.glyphs[0]); - return qRound(gi.x); + qreal lb; + engine->getGlyphBearings(glyphs.glyphs[0], &lb); + return qRound(lb); } /*! @@ -506,8 +507,9 @@ int QFontMetrics::rightBearing(QChar ch) const int nglyphs = 9; engine->stringToCMap(&ch, 1, &glyphs, &nglyphs, 0); // ### can nglyphs != 1 happen at all? Not currently I think - glyph_metrics_t gi = engine->boundingBox(glyphs.glyphs[0]); - return qRound(gi.xoff - gi.x - gi.width); + qreal rb; + engine->getGlyphBearings(glyphs.glyphs[0], 0, &rb); + return qRound(rb); } /*! @@ -1317,8 +1319,9 @@ qreal QFontMetricsF::leftBearing(QChar ch) const int nglyphs = 9; engine->stringToCMap(&ch, 1, &glyphs, &nglyphs, 0); // ### can nglyphs != 1 happen at all? Not currently I think - glyph_metrics_t gi = engine->boundingBox(glyphs.glyphs[0]); - return gi.x.toReal(); + qreal lb; + engine->getGlyphBearings(glyphs.glyphs[0], &lb); + return lb; } /*! @@ -1351,8 +1354,10 @@ qreal QFontMetricsF::rightBearing(QChar ch) const int nglyphs = 9; engine->stringToCMap(&ch, 1, &glyphs, &nglyphs, 0); // ### can nglyphs != 1 happen at all? Not currently I think - glyph_metrics_t gi = engine->boundingBox(glyphs.glyphs[0]); - return (gi.xoff - gi.x - gi.width).toReal(); + qreal rb; + engine->getGlyphBearings(glyphs.glyphs[0], 0, &rb); + return rb; + } /*! diff --git a/src/gui/text/qtextlayout.cpp b/src/gui/text/qtextlayout.cpp index af91603..3c0e85e 100644 --- a/src/gui/text/qtextlayout.cpp +++ b/src/gui/text/qtextlayout.cpp @@ -1644,28 +1644,67 @@ namespace { struct LineBreakHelper { - LineBreakHelper() : glyphCount(0), maxGlyphs(0), manualWrap(false) {} + LineBreakHelper() + : glyphCount(0), maxGlyphs(0), currentPosition(0), fontEngine(0), logClusters(0), + manualWrap(false) + { + } + QScriptLine tmpData; QScriptLine spaceData; + QGlyphLayout glyphs; + int glyphCount; int maxGlyphs; + int currentPosition; QFixed minw; QFixed softHyphenWidth; QFixed rightBearing; + QFixed minimumRightBearing; + + QFontEngine *fontEngine; + const unsigned short *logClusters; bool manualWrap; bool checkFullOtherwiseExtend(QScriptLine &line); + + QFixed calculateNewWidth(const QScriptLine &line) const { + return line.textWidth + tmpData.textWidth + spaceData.textWidth + softHyphenWidth + - qMin(rightBearing, QFixed()); + } + + inline glyph_t currentGlyph() const + { + Q_ASSERT(currentPosition > 0); + return glyphs.glyphs[logClusters[currentPosition - 1]]; + } + + inline void adjustRightBearing() + { + if (currentPosition <= 0) + return; + + qreal rb; + fontEngine->getGlyphBearings(currentGlyph(), 0, &rb); + rightBearing = qMin(QFixed(), QFixed::fromReal(rb)); + } + + inline void resetRightBearing() + { + rightBearing = QFixed(1); // Any positive number is defined as invalid since only + // negative right bearings are interesting to us. + } }; inline bool LineBreakHelper::checkFullOtherwiseExtend(QScriptLine &line) { LB_DEBUG("possible break width %f, spacew=%f", tmpData.textWidth.toReal(), spaceData.textWidth.toReal()); - QFixed newWidth = line.textWidth + tmpData.textWidth + spaceData.textWidth + softHyphenWidth + rightBearing; + QFixed newWidth = calculateNewWidth(line); if (line.length && !manualWrap && (newWidth > line.width || glyphCount > maxGlyphs)) return true; @@ -1741,13 +1780,12 @@ void QTextLine::layout_helper(int maxGlyphs) Qt::Alignment alignment = eng->option.alignment(); const HB_CharAttributes *attributes = eng->attributes(); - int pos = line.from; + lbh.currentPosition = line.from; int end = 0; - QGlyphLayout glyphs; - const unsigned short *logClusters = eng->layoutData->logClustersPtr; + lbh.logClusters = eng->layoutData->logClustersPtr; while (newItem < eng->layoutData->items.size()) { - lbh.rightBearing = 0; + lbh.resetRightBearing(); lbh.softHyphenWidth = 0; if (newItem != item) { item = newItem; @@ -1755,13 +1793,19 @@ void QTextLine::layout_helper(int maxGlyphs) if (!current.num_glyphs) { eng->shape(item); attributes = eng->attributes(); - logClusters = eng->layoutData->logClustersPtr; + lbh.logClusters = eng->layoutData->logClustersPtr; } - pos = qMax(line.from, current.position); + lbh.currentPosition = qMax(line.from, current.position); end = current.position + eng->length(item); - glyphs = eng->shapedGlyphs(¤t); + lbh.glyphs = eng->shapedGlyphs(¤t); } const QScriptItem ¤t = eng->layoutData->items[item]; + QFontEngine *fontEngine = eng->fontEngine(current); + if (lbh.fontEngine != fontEngine) { + lbh.fontEngine = fontEngine; + lbh.minimumRightBearing = qMin(QFixed(), + QFixed::fromReal(fontEngine->minRightBearing())); + } lbh.tmpData.leading = qMax(lbh.tmpData.leading + lbh.tmpData.ascent, current.leading + current.ascent) - qMax(lbh.tmpData.ascent, @@ -1791,8 +1835,8 @@ void QTextLine::layout_helper(int maxGlyphs) if (!line.length && !lbh.tmpData.length) line.setDefaultHeight(eng); if (eng->option.flags() & QTextOption::ShowLineAndParagraphSeparators) { - addNextCluster(pos, end, lbh.tmpData, lbh.glyphCount, - current, logClusters, glyphs); + addNextCluster(lbh.currentPosition, end, lbh.tmpData, lbh.glyphCount, + current, lbh.logClusters, lbh.glyphs); } else { lbh.tmpData.length++; } @@ -1811,10 +1855,10 @@ void QTextLine::layout_helper(int maxGlyphs) ++lbh.glyphCount; if (lbh.checkFullOtherwiseExtend(line)) goto found; - } else if (attributes[pos].whiteSpace) { - while (pos < end && attributes[pos].whiteSpace) - addNextCluster(pos, end, lbh.spaceData, lbh.glyphCount, - current, logClusters, glyphs); + } else if (attributes[lbh.currentPosition].whiteSpace) { + while (lbh.currentPosition < end && attributes[lbh.currentPosition].whiteSpace) + addNextCluster(lbh.currentPosition, end, lbh.spaceData, lbh.glyphCount, + current, lbh.logClusters, lbh.glyphs); if (!lbh.manualWrap && lbh.spaceData.textWidth > line.width) { lbh.spaceData.textWidth = line.width; // ignore spaces that fall out of the line. @@ -1823,19 +1867,19 @@ void QTextLine::layout_helper(int maxGlyphs) } else { bool sb_or_ws = false; do { - addNextCluster(pos, end, lbh.tmpData, lbh.glyphCount, - current, logClusters, glyphs); + addNextCluster(lbh.currentPosition, end, lbh.tmpData, lbh.glyphCount, + current, lbh.logClusters, lbh.glyphs); - if (attributes[pos].whiteSpace || attributes[pos-1].lineBreakType != HB_NoBreak) { + if (attributes[lbh.currentPosition].whiteSpace || attributes[lbh.currentPosition-1].lineBreakType != HB_NoBreak) { sb_or_ws = true; break; - } else if (breakany && attributes[pos].charStop) { + } else if (breakany && attributes[lbh.currentPosition].charStop) { break; } - } while (pos < end); + } while (lbh.currentPosition < end); lbh.minw = qMax(lbh.tmpData.textWidth, lbh.minw); - if (pos && attributes[pos - 1].lineBreakType == HB_SoftHyphen) { + if (lbh.currentPosition && attributes[lbh.currentPosition - 1].lineBreakType == HB_SoftHyphen) { // if we are splitting up a word because of // a soft hyphen then we ... // @@ -1853,41 +1897,39 @@ void QTextLine::layout_helper(int maxGlyphs) // and thus become invisible again. // if (line.length) - lbh.softHyphenWidth = glyphs.advances_x[logClusters[pos - 1]]; + lbh.softHyphenWidth = lbh.glyphs.advances_x[lbh.logClusters[lbh.currentPosition - 1]]; else if (breakany) - lbh.tmpData.textWidth += glyphs.advances_x[logClusters[pos - 1]]; + lbh.tmpData.textWidth += lbh.glyphs.advances_x[lbh.logClusters[lbh.currentPosition - 1]]; } // The actual width of the text needs to take the right bearing into account. The // right bearing is left-ward, which means that if the rightmost pixel is to the right // of the advance of the glyph, the bearing will be negative. We flip the sign // for the code to be more readable. Logic borrowed from qfontmetrics.cpp. - if (pos) { - QFontEngine *fontEngine = eng->fontEngine(current); - glyph_t glyph = glyphs.glyphs[logClusters[pos - 1]]; - glyph_metrics_t gi = fontEngine->boundingBox(glyph); - if (gi.isValid()) - lbh.rightBearing = qMax(QFixed(), -(gi.xoff - gi.x - gi.width)); - } + // We ignore the right bearing if the minimum negative bearing is too little to + // expand the text beyond the edge. + if (sb_or_ws|breakany) { + if (lbh.calculateNewWidth(line) + lbh.minimumRightBearing > line.width) + lbh.adjustRightBearing(); + if (lbh.checkFullOtherwiseExtend(line)) { + if (!breakany) { + line.textWidth += lbh.softHyphenWidth; + } - if ((sb_or_ws|breakany) && lbh.checkFullOtherwiseExtend(line)) { - if (!breakany) { - line.textWidth += lbh.softHyphenWidth; + goto found; } - - line.textWidth += lbh.rightBearing; - - goto found; } } - if (pos == end) + if (lbh.currentPosition == end) newItem = item + 1; } LB_DEBUG("reached end of line"); lbh.checkFullOtherwiseExtend(line); - line.textWidth += lbh.rightBearing; - found: + if (lbh.rightBearing > 0) // If right bearing has not yet been adjusted + lbh.adjustRightBearing(); + line.textWidth -= qMin(QFixed(), lbh.rightBearing); + if (line.length == 0) { LB_DEBUG("no break available in line, adding temp: length %d, width %f, space: length %d, width %f", lbh.tmpData.length, lbh.tmpData.textWidth.toReal(), |