From c3dd4b356e277c8ec2a2634dbae04cdc7e798ca9 Mon Sep 17 00:00:00 2001 From: Eskil Abrahamsen Blomfeldt Date: Mon, 22 Mar 2010 13:40:54 +0100 Subject: Recommit 1ebeb971d3382aec0fff927 This reverts commit 725c2c29c192349016b1332824a7716bbb992f31 which reverted the original commit because of a test failure on qws. This recommit adds a test for whether the metrics from QFontEngine::boundingBox() are valid, which is required for the bearings to be calculated. This test was also in the original logic. --- src/gui/text/qfontengine.cpp | 15 +++++++++++++++ src/gui/text/qfontengine_p.h | 3 +++ src/gui/text/qfontengine_win.cpp | 24 ++++++++++++++++++++++++ src/gui/text/qfontengine_win_p.h | 2 ++ src/gui/text/qfontmetrics.cpp | 21 +++++++++++++-------- src/gui/text/qtextlayout.cpp | 6 +++--- 6 files changed, 60 insertions(+), 11 deletions(-) diff --git a/src/gui/text/qfontengine.cpp b/src/gui/text/qfontengine.cpp index c000457..629db66 100644 --- a/src/gui/text/qfontengine.cpp +++ b/src/gui/text/qfontengine.cpp @@ -379,6 +379,15 @@ 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); + bool isValid = gi.isValid(); + if (leftBearing != 0) + *leftBearing = isValid ? gi.x.toReal() : 0.0; + if (rightBearing != 0) + *rightBearing = isValid ? (gi.xoff - gi.x - gi.width).toReal() : 0.0; +} glyph_metrics_t QFontEngine::tightBoundingBox(const QGlyphLayout &glyphs) { @@ -1385,6 +1394,12 @@ 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 204effa..3c0e85e 100644 --- a/src/gui/text/qtextlayout.cpp +++ b/src/gui/text/qtextlayout.cpp @@ -1688,9 +1688,9 @@ namespace { if (currentPosition <= 0) return; - glyph_metrics_t gi = fontEngine->boundingBox(currentGlyph()); - if (gi.isValid()) - rightBearing = qMin(QFixed(), gi.xoff - gi.x - gi.width); + qreal rb; + fontEngine->getGlyphBearings(currentGlyph(), 0, &rb); + rightBearing = qMin(QFixed(), QFixed::fromReal(rb)); } inline void resetRightBearing() -- cgit v0.12