diff options
| -rw-r--r-- | src/gui/text/qtextengine.cpp | 40 |
1 files changed, 26 insertions, 14 deletions
diff --git a/src/gui/text/qtextengine.cpp b/src/gui/text/qtextengine.cpp index 80a5425790..da1ab25fc1 100644 --- a/src/gui/text/qtextengine.cpp +++ b/src/gui/text/qtextengine.cpp @@ -1099,6 +1099,16 @@ void QTextEngine::shapeTextWithCE(int item) const } #endif +static inline void moveGlyphData(const QGlyphLayout &destination, const QGlyphLayout &source, int num) +{ + if (num > 0 && destination.glyphs != source.glyphs) { + memmove(destination.glyphs, source.glyphs, num * sizeof(HB_Glyph)); + memmove(destination.attributes, source.attributes, num * sizeof(HB_GlyphAttributes)); + memmove(destination.advances_x, source.advances_x, num * sizeof(HB_Fixed)); + memmove(destination.offsets, source.offsets, num * sizeof(HB_FixedPoint)); + } +} + /// take the item from layoutData->items and void QTextEngine::shapeTextWithHarfbuzz(int item) const { @@ -1189,7 +1199,7 @@ void QTextEngine::shapeTextWithHarfbuzz(int item) const - int initial_glyph_pos = 0; + int remaining_glyphs = entire_shaper_item.num_glyphs; int glyph_pos = 0; // for each item shape using harfbuzz and store the results in our layoutData's glyphs array. for (int k = 0; k < itemBoundaries.size(); k += 2) { // for the +2, see the comment at the definition of itemBoundaries @@ -1209,7 +1219,7 @@ void QTextEngine::shapeTextWithHarfbuzz(int item) const QFontEngine *actualFontEngine = font; uint engineIdx = 0; if (font->type() == QFontEngine::Multi) { - engineIdx = uint(initialGlyphs.glyphs[itemBoundaries[k + 1]] >> 24); + engineIdx = uint(initialGlyphs.glyphs[glyph_pos] >> 24); actualFontEngine = static_cast<QFontEngineMulti *>(font)->engine(engineIdx); } @@ -1219,16 +1229,18 @@ void QTextEngine::shapeTextWithHarfbuzz(int item) const shaper_item.glyphIndicesPresent = true; + remaining_glyphs -= shaper_item.initialGlyphCount; + do { - ensureSpace(glyph_pos + shaper_item.num_glyphs); - initialGlyphs = availableGlyphs(&si).mid(0, entire_shaper_item.num_glyphs); - shaper_item.num_glyphs = layoutData->glyphLayout.numGlyphs - layoutData->used - glyph_pos; + ensureSpace(glyph_pos + shaper_item.num_glyphs + remaining_glyphs); - const QGlyphLayout g = availableGlyphs(&si); - shaper_item.glyphs = g.glyphs + glyph_pos; - shaper_item.attributes = g.attributes + glyph_pos; - shaper_item.advances = reinterpret_cast<HB_Fixed *>(g.advances_x + glyph_pos); - shaper_item.offsets = reinterpret_cast<HB_FixedPoint *>(g.offsets + glyph_pos); + const QGlyphLayout g = availableGlyphs(&si).mid(glyph_pos); + moveGlyphData(g.mid(shaper_item.num_glyphs), g.mid(shaper_item.initialGlyphCount), remaining_glyphs); + + shaper_item.glyphs = g.glyphs; + shaper_item.attributes = g.attributes; + shaper_item.advances = reinterpret_cast<HB_Fixed *>(g.advances_x); + shaper_item.offsets = reinterpret_cast<HB_FixedPoint *>(g.offsets); if (shaper_item.glyphIndicesPresent) { for (hb_uint32 i = 0; i < shaper_item.initialGlyphCount; ++i) @@ -1241,18 +1253,18 @@ void QTextEngine::shapeTextWithHarfbuzz(int item) const } while (!qShapeItem(&shaper_item)); // this does the actual shaping via harfbuzz. QGlyphLayout g = availableGlyphs(&si).mid(glyph_pos, shaper_item.num_glyphs); + moveGlyphData(g.mid(shaper_item.num_glyphs), g.mid(shaper_item.initialGlyphCount), remaining_glyphs); - for (hb_uint32 i = 0; i < shaper_item.item.length; ++i) { + for (hb_uint32 i = 0; i < shaper_item.num_glyphs; ++i) g.glyphs[i] = g.glyphs[i] | (engineIdx << 24); + + for (hb_uint32 i = 0; i < shaper_item.item.length; ++i) shaper_item.log_clusters[i] += glyph_pos; - } if (kerningEnabled && !shaper_item.kerning_applied) font->doKerning(&g, option.useDesignMetrics() ? QFlag(QTextEngine::DesignMetrics) : QFlag(0)); glyph_pos += shaper_item.num_glyphs; - - initial_glyph_pos += shaper_item.initialGlyphCount; } // qDebug(" -> item: script=%d num_glyphs=%d", shaper_item.script, shaper_item.num_glyphs); |