static void drawKernText(SkCanvas* canvas, const void* text, size_t len, SkScalar x, SkScalar y, const SkFont& font, const SkPaint& paint) { SkTypeface* face = font.getTypefaceOrDefault(); if (!face) { canvas->drawSimpleText(text, len, SkTextEncoding::kUTF8, x, y, font, paint); return; } SkAutoSTMalloc<128, uint16_t> glyphStorage(len); uint16_t* glyphs = glyphStorage.get(); int glyphCount = font.textToGlyphs(text, len, SkTextEncoding::kUTF8, glyphs, len); if (glyphCount < 1) { return; } SkAutoSTMalloc<128, int32_t> adjustmentStorage(glyphCount - 1); int32_t* adjustments = adjustmentStorage.get(); if (!face->getKerningPairAdjustments(glyphs, glyphCount, adjustments)) { canvas->drawSimpleText(text, len, SkTextEncoding::kUTF8, x, y, font, paint); return; } SkTextBlobBuilder builder; auto rec = builder.allocRunPos(font, glyphCount); memcpy(rec.glyphs, glyphs, glyphCount * sizeof(SkGlyphID)); getGlyphPositions(font, glyphs, glyphCount, x, y, rec.points()); applyKerning(rec.points(), adjustments, glyphCount, font); canvas->drawTextBlob(builder.make(), 0, 0, paint); }
static void drawKernText(SkCanvas* canvas, const void* text, size_t len, SkScalar x, SkScalar y, const SkPaint& paint) { SkTypeface* face = paint.getTypeface(); if (!face) { canvas->drawText(text, len, x, y, paint); return; } SkAutoSTMalloc<128, uint16_t> glyphStorage(len); uint16_t* glyphs = glyphStorage.get(); int glyphCount = paint.textToGlyphs(text, len, glyphs); if (glyphCount < 1) { return; } SkAutoSTMalloc<128, int32_t> adjustmentStorage(glyphCount - 1); int32_t* adjustments = adjustmentStorage.get(); if (!face->getKerningPairAdjustments(glyphs, glyphCount, adjustments)) { canvas->drawText(text, len, x, y, paint); return; } SkPaint glyphPaint(paint); glyphPaint.setTextEncoding(SkPaint::kGlyphID_TextEncoding); SkAutoSTMalloc<128, SkPoint> posStorage(glyphCount); SkPoint* pos = posStorage.get(); getGlyphPositions(glyphPaint, glyphs, glyphCount, x, y, pos); applyKerning(pos, adjustments, glyphCount, glyphPaint); canvas->drawPosText(glyphs, glyphCount * sizeof(uint16_t), pos, glyphPaint); }
void QFontEngineQPF::draw(QPaintEngine *p, qreal _x, qreal _y, const QTextItemInt &si) { QPaintEngineState *pState = p->state; QRasterPaintEngine *paintEngine = static_cast<QRasterPaintEngine*>(p); QTransform matrix = pState->transform(); matrix.translate(_x, _y); QFixed x = QFixed::fromReal(matrix.dx()); QFixed y = QFixed::fromReal(matrix.dy()); QVarLengthArray<QFixedPoint> positions; QVarLengthArray<glyph_t> glyphs; getGlyphPositions(si.glyphs, si.num_glyphs, matrix, si.flags, glyphs, positions); if (glyphs.size() == 0) return; for(int i = 0; i < glyphs.size(); i++) { const Glyph *glyph = findGlyph(glyphs[i]); if (!glyph) continue; const bool mono = false; // ### paintEngine->alphaPenBlt(reinterpret_cast<const uchar *>(glyph) + sizeof(Glyph), glyph->bytesPerLine, mono, qRound(positions[i].x) + glyph->x, qRound(positions[i].y) + glyph->y, glyph->width, glyph->height); } }
void QFontEngineMac::draw(CGContextRef ctx, qreal x, qreal y, const QTextItemInt &ti, int paintDeviceHeight) { QVarLengthArray<QFixedPoint> positions; QVarLengthArray<glyph_t> glyphs; QTransform matrix; matrix.translate(x, y); getGlyphPositions(ti.glyphs, ti.num_glyphs, matrix, ti.flags, glyphs, positions); if (glyphs.size() == 0) return; CGContextSetFontSize(ctx, fontDef.pixelSize); CGAffineTransform oldTextMatrix = CGContextGetTextMatrix(ctx); CGAffineTransform cgMatrix = CGAffineTransformMake(1, 0, 0, -1, 0, -paintDeviceHeight); CGAffineTransformConcat(cgMatrix, oldTextMatrix); if (synthesisFlags & QFontEngine::SynthesizedItalic) cgMatrix = CGAffineTransformConcat(cgMatrix, CGAffineTransformMake(1, 0, -tanf(14 * acosf(0) / 90), 1, 0, 0)); cgMatrix = CGAffineTransformConcat(cgMatrix, multiEngine->transform); CGContextSetTextMatrix(ctx, cgMatrix); CGContextSetTextDrawingMode(ctx, kCGTextFill); QVarLengthArray<CGSize> advances(glyphs.size()); QVarLengthArray<CGGlyph> cgGlyphs(glyphs.size()); for (int i = 0; i < glyphs.size() - 1; ++i) { advances[i].width = (positions[i + 1].x - positions[i].x).toReal(); advances[i].height = (positions[i + 1].y - positions[i].y).toReal(); cgGlyphs[i] = glyphs[i]; } advances[glyphs.size() - 1].width = 0; advances[glyphs.size() - 1].height = 0; cgGlyphs[glyphs.size() - 1] = glyphs[glyphs.size() - 1]; CGContextSetFont(ctx, cgFont); CGContextSetTextPosition(ctx, positions[0].x.toReal(), positions[0].y.toReal()); CGContextShowGlyphsWithAdvances(ctx, cgGlyphs.data(), advances.data(), glyphs.size()); if (synthesisFlags & QFontEngine::SynthesizedBold) { CGContextSetTextPosition(ctx, positions[0].x.toReal() + 0.5 * lineThickness().toReal(), positions[0].y.toReal()); CGContextShowGlyphsWithAdvances(ctx, cgGlyphs.data(), advances.data(), glyphs.size()); } CGContextSetTextMatrix(ctx, oldTextMatrix); }