html/canvas/CanvasRenderingContext2D.cpp

141     // Ensure that the state stack in the ImageBuffer's context
289         m_stateStack.append(state());
291             context->save();
304     m_path.transform(state().m_transform);
306     m_path.transform(state().m_transform.inverse());
318     if (state().m_strokeStyle.isValid() && state().m_strokeStyle.isEquivalentColor(style))
330     State& state = modifiableState();
331     state.m_strokeStyle = style;
335     state.m_strokeStyle.applyStrokeColor(c);
336     state.m_unparsedStrokeColor = String();
344     if (state().m_fillStyle.isValid() && state().m_fillStyle.isEquivalentColor(style))
356     State& state = modifiableState();
357     state.m_fillStyle = style;
361     state.m_fillStyle.applyFillColor(c);
362     state.m_unparsedFillColor = String();
367     return state().m_lineWidth;
374     if (state().m_lineWidth == width)
386     return lineCapName(state().m_lineCap);
394     if (state().m_lineCap == cap)
406     return lineJoinName(state().m_lineJoin);
414     if (state().m_lineJoin == join)
426     return state().m_miterLimit;
433     if (state().m_miterLimit == limit)
445     return state().m_shadowOffset.width();
452     if (state().m_shadowOffset.width() == x)
461     return state().m_shadowOffset.height();
468     if (state().m_shadowOffset.height() == y)
477     return state().m_shadowBlur;
484     if (state().m_shadowBlur == blur)
493     return Color(state().m_shadowColor).serialized();
501     if (state().m_shadowColor == rgba)
510     return state().m_lineDash;
550     return state().m_lineDashOffset;
555     if (!std::isfinite(offset) || state().m_lineDashOffset == offset)
578     DashArray convertedLineDash(state().m_lineDash.size());
579     for (size_t i = 0; i < state().m_lineDash.size(); ++i)
580         convertedLineDash[i] = static_cast<DashArrayElement>(state().m_lineDash[i]);
581     c->setLineDash(convertedLineDash, state().m_lineDashOffset);
586     return state().m_globalAlpha;
593     if (state().m_globalAlpha == alpha)
605     return compositeOperatorName(state().m_globalComposite, state().m_globalBlend);
614     if ((state().m_globalComposite == op) && (state().m_globalBlend == blendMode))
630     if (!state().m_invertibleCTM)
636     AffineTransform newTransform = state().m_transform;
638     if (state().m_transform == newTransform)
658     if (!state().m_invertibleCTM)
664     AffineTransform newTransform = state().m_transform;
666     if (state().m_transform == newTransform)
686     if (!state().m_invertibleCTM)
692     AffineTransform newTransform = state().m_transform;
694     if (state().m_transform == newTransform)
714     if (!state().m_invertibleCTM)
721     AffineTransform newTransform = state().m_transform * transform;
722     if (state().m_transform == newTransform)
746     AffineTransform ctm = state().m_transform;
762     if (color == state().m_unparsedStrokeColor)
771     if (state().m_strokeStyle.isValid() && state().m_strokeStyle.isEquivalentRGBA(grayLevel, grayLevel, grayLevel, 1.0f))
783     if (state().m_strokeStyle.isValid() && state().m_strokeStyle.isEquivalentRGBA(grayLevel, grayLevel, grayLevel, alpha))
790     if (state().m_strokeStyle.isValid() && state().m_strokeStyle.isEquivalentRGBA(r, g, b, a))
797     if (state().m_strokeStyle.isValid() && state().m_strokeStyle.isEquivalentCMYKA(c, m, y, k, a))
804     if (color == state().m_unparsedFillColor)
813     if (state().m_fillStyle.isValid() && state().m_fillStyle.isEquivalentRGBA(grayLevel, grayLevel, grayLevel, 1.0f))
825     if (state().m_fillStyle.isValid() && state().m_fillStyle.isEquivalentRGBA(grayLevel, grayLevel, grayLevel, alpha))
832     if (state().m_fillStyle.isValid() && state().m_fillStyle.isEquivalentRGBA(r, g, b, a))
839     if (state().m_fillStyle.isValid() && state().m_fillStyle.isEquivalentCMYKA(c, m, y, k, a))
917     if (!state().m_invertibleCTM)
932         if (isFullCanvasCompositeMode(state().m_globalComposite)) {
935         } else if (state().m_globalComposite == CompositeCopy) {
957     if (!state().m_invertibleCTM)
983     if (!state().m_invertibleCTM)
1003     if (!state().m_invertibleCTM)
1007     AffineTransform ctm = state().m_transform;
1025     if (!state().m_invertibleCTM)
1029     AffineTransform ctm = state().m_transform;
1045     if (!state().m_invertibleCTM)
1051         context->save();
1055     if (state().m_globalAlpha != 1) {
1057             context->save();
1062     if (state().m_globalComposite != CompositeSourceOver) {
1064             context->save();
1083     if (!state().m_invertibleCTM)
1098     } else if (isFullCanvasCompositeMode(state().m_globalComposite)) {
1101     } else if (state().m_globalComposite == CompositeCopy) {
1119     if (!state().m_invertibleCTM)
1121     if (!(state().m_lineWidth >= 0))
1132     boundingRect.inflate(state().m_lineWidth / 2);
1134     c->strokeRect(rect, state().m_lineWidth);
1186     if (state().m_shadowOffset == offset && state().m_shadowBlur == blur && state().m_shadowColor == color)
1205         float width = state().m_shadowOffset.width();
1206         float height = state().m_shadowOffset.height();
1207         c->setLegacyShadow(FloatSize(width, -height), state().m_shadowBlur, state().m_shadowColor, ColorSpaceDeviceRGB);
1214     return alphaChannel(state().m_shadowColor) && (state().m_shadowBlur || !state().m_shadowOffset.isZero());
1271     drawImage(image, srcRect, dstRect, state().m_globalComposite, state().m_globalBlend, ec);
1307     if (!state().m_invertibleCTM)
1378     if (!state().m_invertibleCTM)
1382     ImageBuffer* buffer = sourceCanvas->buffer();
1383     if (!buffer)
1400         c->drawImageBuffer(buffer, ColorSpaceDeviceRGB, dstRect, srcRect, state().m_globalComposite, state().m_globalBlend);
1402     } else if (isFullCanvasCompositeMode(state().m_globalComposite)) {
1403         fullCanvasCompositedDrawImage(buffer, ColorSpaceDeviceRGB, dstRect, srcRect, state().m_globalComposite);
1405     } else if (state().m_globalComposite == CompositeCopy) {
1407         c->drawImageBuffer(buffer, ColorSpaceDeviceRGB, dstRect, srcRect, state().m_globalComposite, state().m_globalBlend);
1410         c->drawImageBuffer(buffer, ColorSpaceDeviceRGB, dstRect, srcRect, state().m_globalComposite, state().m_globalBlend);
1469     if (!state().m_invertibleCTM)
1515     c->save();
1524     transformed.transform(state().m_transform);
1540     return state().m_transform.mapQuad(quad).containsQuad(canvasQuad);
1562 void CanvasRenderingContext2D::compositeBuffer(ImageBuffer* buffer, const IntRect& bufferRect, CompositeOperator op)
1571     c->save();
1575     c->save();
1580     c->drawImageBuffer(buffer, ColorSpaceDeviceRGB, bufferRect.location(), state().m_globalComposite);
1605     OwnPtr<ImageBuffer> buffer = createCompositingBuffer(bufferRect);
1606     if (!buffer)
1617     buffer->context()->translate(-transformedAdjustedRect.location().x(), -transformedAdjustedRect.location().y());
1618     buffer->context()->translate(croppedOffset.width(), croppedOffset.height());
1619     buffer->context()->concatCTM(effectiveTransform);
1620     drawImageToContext(image, buffer->context(), styleColorSpace, adjustedDest, src, CompositeSourceOver);
1622     compositeBuffer(buffer.get(), bufferRect, op);
1627     ASSERT(isFullCanvasCompositeMode(state().m_globalComposite));
1635     OwnPtr<ImageBuffer> buffer = createCompositingBuffer(bufferRect);
1636     if (!buffer)
1642     buffer->context()->setCompositeOperation(CompositeSourceOver);
1643     modifiableState().m_fillStyle.applyFillColor(buffer->context());
1644     buffer->context()->fillPath(path);
1646     compositeBuffer(buffer.get(), bufferRect, state().m_globalComposite);
1742     if (!state().m_invertibleCTM)
1760         AffineTransform ctm = state().m_transform;
1764     if (options & CanvasDidDrawApplyShadow && alphaChannel(state().m_shadowColor)) {
1767         shadowRect.move(state().m_shadowOffset);
1768         shadowRect.inflate(state().m_shadowBlur);
1880     ImageBuffer* buffer = canvas()->buffer();
1881     if (!buffer)
1884     RefPtr<Uint8ClampedArray> byteArray = buffer->getUnmultipliedImageData(imageDataRect, coordinateSystem);
1932     ImageBuffer* buffer = canvas()->buffer();
1933     if (!buffer)
1951     destRect.intersect(IntRect(IntPoint(), coordinateSystem == ImageBuffer::LogicalCoordinateSystem ? buffer->logicalSize() : buffer->internalSize()));
1957     buffer->putByteArray(Unmultiplied, data->data(), IntSize(data->width(), data->height()), sourceRect, IntPoint(destOffset), coordinateSystem);
1969     if (!state().m_realizedFont)
1973     const FontDescription& fontDescription = state().m_font.fontDescription();
1983     for (unsigned i = 0; i < state().m_font.familyCount(); ++i) {
1987         String family = state().m_font.familyAt(i);
2002     if (newFont == state().m_unparsedFont && state().m_realizedFont)
2061     return textAlignName(state().m_textAlign);
2069     if (state().m_textAlign == align)
2077     return textBaselineName(state().m_textBaseline);
2085     if (state().m_textBaseline == baseline)
2147     if (!state().m_invertibleCTM)
2181     switch (state().m_textBaseline) {
2204     TextAlign align = state().m_textAlign;
2228     const CanvasStyle& drawStyle = fill ? state().m_fillStyle : state().m_strokeStyle;
2293     float delta = state().m_lineWidth / 2;
2294     if (state().m_lineJoin == MiterJoin)
2295         delta *= state().m_miterLimit;
2296     else if (state().m_lineCap == SquareCap)
2306     if (!state().m_realizedFont)
2307         setFont(state().m_unparsedFont);
2308     return state().m_font;
2314     return canvas()->buffer() ? canvas()->buffer()->platformLayer() : 0;
2320     return state().m_imageSmoothingEnabled;
2325     if (enabled == state().m_imageSmoothingEnabled)