void PlatformContextCairo::clipForPatternFilling(const GraphicsContextState& state)
{
ASSERT(state.fillPattern);
// Hold current cairo path in a variable for restoring it after configuring the pattern clip rectangle.
auto currentPath = cairo_copy_path(m_cr.get());
cairo_new_path(m_cr.get());
// Initialize clipping extent from current cairo clip extents, then shrink if needed according to pattern.
// Inspired by GraphicsContextQt::drawRepeatPattern.
double x1, y1, x2, y2;
cairo_clip_extents(m_cr.get(), &x1, &y1, &x2, &y2);
FloatRect clipRect(x1, y1, x2 - x1, y2 - y1);
Image* patternImage = state.fillPattern->tileImage();
ASSERT(patternImage);
const AffineTransform& patternTransform = state.fillPattern->getPatternSpaceTransform();
FloatRect patternRect = patternTransform.mapRect(FloatRect(0, 0, patternImage->width(), patternImage->height()));
bool repeatX = state.fillPattern->repeatX();
bool repeatY = state.fillPattern->repeatY();
if (!repeatX) {
clipRect.setX(patternRect.x());
clipRect.setWidth(patternRect.width());
}
if (!repeatY) {
clipRect.setY(patternRect.y());
clipRect.setHeight(patternRect.height());
}
if (!repeatX || !repeatY) {
cairo_rectangle(m_cr.get(), clipRect.x(), clipRect.y(), clipRect.width(), clipRect.height());
cairo_clip(m_cr.get());
}
// Restoring cairo path.
cairo_append_path(m_cr.get(), currentPath);
cairo_path_destroy(currentPath);
}
FloatRect GraphicsContext::roundToDevicePixels(const FloatRect& frect)
{
FloatRect result;
double x = frect.x();
double y = frect.y();
cairo_t* cr = m_data->cr;
cairo_user_to_device(cr, &x, &y);
x = round(x);
y = round(y);
cairo_device_to_user(cr, &x, &y);
result.setX(static_cast<float>(x));
result.setY(static_cast<float>(y));
x = frect.width();
y = frect.height();
cairo_user_to_device_distance(cr, &x, &y);
x = round(x);
y = round(y);
cairo_device_to_user_distance(cr, &x, &y);
result.setWidth(static_cast<float>(x));
result.setHeight(static_cast<float>(y));
return result;
}
void showLineLayoutForFlow(const RenderBlockFlow& flow, const Layout& layout, int depth)
{
int printedCharacters = 0;
printPrefix(printedCharacters, depth);
fprintf(stderr, "SimpleLineLayout (%u lines, %u runs) (%p)\n", layout.lineCount(), layout.runCount(), &layout);
++depth;
auto resolver = runResolver(flow, layout);
for (auto it = resolver.begin(), end = resolver.end(); it != end; ++it) {
const auto& run = *it;
FloatRect rect = run.rect();
printPrefix(printedCharacters, depth);
if (run.start() < run.end()) {
fprintf(stderr, "line %u run(%u, %u) (%.2f, %.2f) (%.2f, %.2f) \"%s\"\n", run.lineIndex(), run.start(), run.end(),
rect.x(), rect.y(), rect.width(), rect.height(), run.text().toStringWithoutCopying().utf8().data());
} else {
ASSERT(run.start() == run.end());
fprintf(stderr, "line break %u run(%u, %u) (%.2f, %.2f) (%.2f, %.2f)\n", run.lineIndex(), run.start(), run.end(), rect.x(), rect.y(), rect.width(), rect.height());
}
}
}
void Path::addRect(const FloatRect& rect)
{
static const VGubyte pathSegments[] = {
VG_MOVE_TO_ABS,
VG_HLINE_TO_REL,
VG_VLINE_TO_REL,
VG_HLINE_TO_REL,
VG_CLOSE_PATH
};
const VGfloat pathData[] = {
rect.x(), rect.y(),
rect.width(),
rect.height(),
-rect.width()
};
m_path->makeCompatibleContextCurrent();
vgAppendPathData(m_path->vgPath(), 5, pathSegments, pathData);
ASSERT_VG_NO_ERROR();
m_path->m_currentPoint = m_path->m_subpathStartPoint = rect.location();
}
bool RenderSVGResourceMasker::drawContentIntoMaskImage(MaskerData* maskerData, ColorSpace colorSpace, RenderObject* object)
{
GraphicsContext& maskImageContext = maskerData->maskImage->context();
// Eventually adjust the mask image context according to the target objectBoundingBox.
AffineTransform maskContentTransformation;
if (maskElement().maskContentUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) {
FloatRect objectBoundingBox = object->objectBoundingBox();
maskContentTransformation.translate(objectBoundingBox.x(), objectBoundingBox.y());
maskContentTransformation.scaleNonUniform(objectBoundingBox.width(), objectBoundingBox.height());
maskImageContext.concatCTM(maskContentTransformation);
}
// Draw the content into the ImageBuffer.
for (auto& child : childrenOfType<SVGElement>(maskElement())) {
auto renderer = child.renderer();
if (!renderer)
continue;
if (renderer->needsLayout())
return false;
const RenderStyle& style = renderer->style();
if (style.display() == NONE || style.visibility() != VISIBLE)
continue;
SVGRenderingContext::renderSubtreeToImageBuffer(maskerData->maskImage.get(), *renderer, maskContentTransformation);
}
#if !USE(CG)
maskerData->maskImage->transformColorSpace(ColorSpaceDeviceRGB, colorSpace);
#else
UNUSED_PARAM(colorSpace);
#endif
// Create the luminance mask.
if (style().svgStyle().maskType() == MT_LUMINANCE)
maskerData->maskImage->convertToLuminanceMask();
return true;
}
void RenderPath::paint(PaintInfo& paintInfo, int, int)
{
if (paintInfo.context->paintingDisabled() || style()->visibility() == HIDDEN || m_path.isEmpty())
return;
FloatRect boundingBox = repaintRectInLocalCoordinates();
FloatRect nonLocalBoundingBox = m_localTransform.mapRect(boundingBox);
// FIXME: The empty rect check is to deal with incorrect initial clip in renderSubtreeToImage
// unfortunately fixing that problem is fairly complex unless we were willing to just futz the
// rect to something "close enough"
if (!nonLocalBoundingBox.intersects(paintInfo.rect) && !paintInfo.rect.isEmpty())
return;
PaintInfo childPaintInfo(paintInfo);
childPaintInfo.context->save();
applyTransformToPaintInfo(childPaintInfo, m_localTransform);
SVGResourceFilter* filter = 0;
if (childPaintInfo.phase == PaintPhaseForeground) {
PaintInfo savedInfo(childPaintInfo);
if (prepareToRenderSVGContent(this, childPaintInfo, boundingBox, filter)) {
if (style()->svgStyle()->shapeRendering() == SR_CRISPEDGES)
childPaintInfo.context->setShouldAntialias(false);
fillAndStrokePath(m_path, childPaintInfo.context, style(), this);
if (static_cast<SVGStyledElement*>(node())->supportsMarkers())
m_markerLayoutInfo.drawMarkers(childPaintInfo);
}
finishRenderSVGContent(this, childPaintInfo, filter, savedInfo.context);
}
if ((childPaintInfo.phase == PaintPhaseOutline || childPaintInfo.phase == PaintPhaseSelfOutline) && style()->outlineWidth())
paintOutline(childPaintInfo.context, static_cast<int>(boundingBox.x()), static_cast<int>(boundingBox.y()),
static_cast<int>(boundingBox.width()), static_cast<int>(boundingBox.height()), style());
childPaintInfo.context->restore();
}
FloatRect FilterEffect::determineFilterPrimitiveSubregion()
{
ASSERT(filter());
// FETile, FETurbulence, FEFlood don't have input effects, take the filter region as unite rect.
FloatRect subregion;
if (unsigned numberOfInputEffects = inputEffects().size()) {
subregion = inputEffect(0)->determineFilterPrimitiveSubregion();
for (unsigned i = 1; i < numberOfInputEffects; ++i)
subregion.unite(inputEffect(i)->determineFilterPrimitiveSubregion());
} else
subregion = filter()->filterRegion();
// After calling determineFilterPrimitiveSubregion on the target effect, reset the subregion again for <feTile>.
if (filterEffectType() == FilterEffectTypeTile)
subregion = filter()->filterRegion();
subregion = mapRect(subregion);
FloatRect boundaries = effectBoundaries();
if (hasX())
subregion.setX(boundaries.x());
if (hasY())
subregion.setY(boundaries.y());
if (hasWidth())
subregion.setWidth(boundaries.width());
if (hasHeight())
subregion.setHeight(boundaries.height());
setFilterPrimitiveSubregion(subregion);
FloatRect absoluteSubregion = filter()->absoluteTransform().mapRect(subregion);
FloatSize filterResolution = filter()->filterResolution();
absoluteSubregion.scale(filterResolution.width(), filterResolution.height());
setMaxEffectRect(absoluteSubregion);
return subregion;
}
void Image::drawTiled(GraphicsContext* ctxt, const FloatRect& destRect, const FloatPoint& srcPoint, const FloatSize& scaledTileSize, CompositeOperator op)
{
if (mayFillWithSolidColor()) {
fillWithSolidColor(ctxt, destRect, solidColor(), op);
return;
}
FloatSize intrinsicTileSize = size();
if (hasRelativeWidth())
intrinsicTileSize.setWidth(scaledTileSize.width());
if (hasRelativeHeight())
intrinsicTileSize.setHeight(scaledTileSize.height());
FloatSize scale(scaledTileSize.width() / intrinsicTileSize.width(),
scaledTileSize.height() / intrinsicTileSize.height());
AffineTransform patternTransform = AffineTransform().scale(scale.width(), scale.height());
FloatRect oneTileRect;
oneTileRect.setX(destRect.x() + fmodf(fmodf(-srcPoint.x(), scaledTileSize.width()) - scaledTileSize.width(), scaledTileSize.width()));
oneTileRect.setY(destRect.y() + fmodf(fmodf(-srcPoint.y(), scaledTileSize.height()) - scaledTileSize.height(), scaledTileSize.height()));
oneTileRect.setSize(scaledTileSize);
// Check and see if a single draw of the image can cover the entire area we are supposed to tile.
if (oneTileRect.contains(destRect)) {
FloatRect visibleSrcRect;
visibleSrcRect.setX((destRect.x() - oneTileRect.x()) / scale.width());
visibleSrcRect.setY((destRect.y() - oneTileRect.y()) / scale.height());
visibleSrcRect.setWidth(destRect.width() / scale.width());
visibleSrcRect.setHeight(destRect.height() / scale.height());
draw(ctxt, destRect, visibleSrcRect, op);
return;
}
FloatRect tileRect(FloatPoint(), intrinsicTileSize);
drawPattern(ctxt, tileRect, patternTransform, oneTileRect.location(), op, destRect);
startAnimation();
}
FloatRect RenderSVGResourceMasker::resourceBoundingBox(const RenderObject& object)
{
FloatRect objectBoundingBox = object.objectBoundingBox();
FloatRect maskBoundaries = SVGLengthContext::resolveRectangle<SVGMaskElement>(&maskElement(), maskElement().maskUnits(), objectBoundingBox);
// Resource was not layouted yet. Give back clipping rect of the mask.
if (selfNeedsLayout())
return maskBoundaries;
if (m_maskContentBoundaries.isEmpty())
calculateMaskContentRepaintRect();
FloatRect maskRect = m_maskContentBoundaries;
if (maskElement().maskContentUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) {
AffineTransform transform;
transform.translate(objectBoundingBox.x(), objectBoundingBox.y());
transform.scaleNonUniform(objectBoundingBox.width(), objectBoundingBox.height());
maskRect = transform.mapRect(maskRect);
}
maskRect.intersect(maskBoundaries);
return maskRect;
}
void PrintContext::computePageRects(const FloatRect& printRect,
float headerHeight,
float footerHeight,
float userScaleFactor,
float& outPageHeight) {
m_pageRects.clear();
outPageHeight = 0;
if (!m_frame->document() || !m_frame->view() ||
m_frame->document()->layoutViewItem().isNull())
return;
if (userScaleFactor <= 0) {
DLOG(ERROR) << "userScaleFactor has bad value " << userScaleFactor;
return;
}
LayoutViewItem view = m_frame->document()->layoutViewItem();
const IntRect& documentRect = view.documentRect();
FloatSize pageSize = m_frame->resizePageRectsKeepingRatio(
FloatSize(printRect.width(), printRect.height()),
FloatSize(documentRect.width(), documentRect.height()));
float pageWidth = pageSize.width();
float pageHeight = pageSize.height();
outPageHeight =
pageHeight; // this is the height of the page adjusted by margins
pageHeight -= headerHeight + footerHeight;
if (pageHeight <= 0) {
DLOG(ERROR) << "pageHeight has bad value " << pageHeight;
return;
}
computePageRectsWithPageSizeInternal(
FloatSize(pageWidth / userScaleFactor, pageHeight / userScaleFactor));
}
void drawPatternToCairoContext(cairo_t* cr, cairo_surface_t* image, const IntSize& imageSize, const FloatRect& tileRect,
const AffineTransform& patternTransform, const FloatPoint& phase, cairo_operator_t op, const FloatRect& destRect)
{
// Avoid NaN
if (!isfinite(phase.x()) || !isfinite(phase.y()))
return;
cairo_save(cr);
RefPtr<cairo_surface_t> clippedImageSurface = 0;
if (tileRect.size() != imageSize) {
IntRect imageRect = enclosingIntRect(tileRect);
clippedImageSurface = adoptRef(cairo_image_surface_create(CAIRO_FORMAT_ARGB32, imageRect.width(), imageRect.height()));
RefPtr<cairo_t> clippedImageContext = adoptRef(cairo_create(clippedImageSurface.get()));
cairo_set_source_surface(clippedImageContext.get(), image, -tileRect.x(), -tileRect.y());
cairo_paint(clippedImageContext.get());
image = clippedImageSurface.get();
}
cairo_pattern_t* pattern = cairo_pattern_create_for_surface(image);
cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT);
cairo_matrix_t patternMatrix = cairo_matrix_t(patternTransform);
cairo_matrix_t phaseMatrix = {1, 0, 0, 1, phase.x() + tileRect.x() * patternTransform.a(), phase.y() + tileRect.y() * patternTransform.d()};
cairo_matrix_t combined;
cairo_matrix_multiply(&combined, &patternMatrix, &phaseMatrix);
cairo_matrix_invert(&combined);
cairo_pattern_set_matrix(pattern, &combined);
cairo_set_operator(cr, op);
cairo_set_source(cr, pattern);
cairo_pattern_destroy(pattern);
cairo_rectangle(cr, destRect.x(), destRect.y(), destRect.width(), destRect.height());
cairo_fill(cr);
cairo_restore(cr);
}
bool RenderSVGResourceMasker::drawContentIntoMaskImage(MaskerData* maskerData, ColorSpace colorSpace, const SVGMaskElement* maskElement, RenderObject* object)
{
GraphicsContext* maskImageContext = maskerData->maskImage->context();
ASSERT(maskImageContext);
// Eventually adjust the mask image context according to the target objectBoundingBox.
AffineTransform maskContentTransformation;
if (maskElement->maskContentUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) {
FloatRect objectBoundingBox = object->objectBoundingBox();
maskContentTransformation.translate(objectBoundingBox.x(), objectBoundingBox.y());
maskContentTransformation.scaleNonUniform(objectBoundingBox.width(), objectBoundingBox.height());
maskImageContext->concatCTM(maskContentTransformation);
}
// Draw the content into the ImageBuffer.
for (Node* node = maskElement->firstChild(); node; node = node->nextSibling()) {
RenderObject* renderer = node->renderer();
if (!node->isSVGElement() || !static_cast<SVGElement*>(node)->isStyled() || !renderer)
continue;
if (renderer->needsLayout())
return false;
RenderStyle* style = renderer->style();
if (!style || style->display() == NONE || style->visibility() != VISIBLE)
continue;
SVGImageBufferTools::renderSubtreeToImageBuffer(maskerData->maskImage.get(), renderer, maskContentTransformation);
}
#if !USE(CG)
maskerData->maskImage->transformColorSpace(ColorSpaceDeviceRGB, colorSpace);
#else
UNUSED_PARAM(colorSpace);
#endif
// Create the luminance mask.
maskerData->maskImage->convertToLuminanceMask();
return true;
}
ShadowApplier::ShadowApplier(GraphicsContext& context, const ShadowData* shadow, const FloatRect& textRect, bool lastShadowIterationShouldDrawText, bool opaque, FontOrientation orientation)
: m_context(context)
, m_shadow(shadow)
, m_onlyDrawsShadow(!isLastShadowIteration() || !lastShadowIterationShouldDrawText)
, m_avoidDrawingShadow(shadowIsCompletelyCoveredByText(opaque))
, m_nothingToDraw(shadow && m_avoidDrawingShadow && m_onlyDrawsShadow)
, m_didSaveContext(false)
{
if (!shadow || m_nothingToDraw) {
m_shadow = nullptr;
return;
}
int shadowX = orientation == Horizontal ? shadow->x() : shadow->y();
int shadowY = orientation == Horizontal ? shadow->y() : -shadow->x();
FloatSize shadowOffset(shadowX, shadowY);
int shadowRadius = shadow->radius();
const Color& shadowColor = shadow->color();
// When drawing shadows, we usually clip the context to the area the shadow will reside, and then
// draw the text itself outside the clipped area (so only the shadow shows up). However, we can
// often draw the *last* shadow and the text itself in a single call.
if (m_onlyDrawsShadow) {
FloatRect shadowRect(textRect);
shadowRect.inflate(shadow->paintingExtent());
shadowRect.move(shadowOffset);
context.save();
context.clip(shadowRect);
m_didSaveContext = true;
m_extraOffset = FloatSize(0, 2 * textRect.height() + std::max(0.0f, shadowOffset.height()) + shadowRadius);
shadowOffset -= m_extraOffset;
}
if (!m_avoidDrawingShadow)
context.setShadow(shadowOffset, shadowRadius, shadowColor, context.fillColorSpace());
}
FloatRect findInPageRectFromAbsoluteRect(const FloatRect& inputRect, const RenderObject* renderer)
{
if (!renderer || inputRect.isEmpty())
return FloatRect();
// Normalize the input rect to its container, saving the container bounding box for the incoming loop.
FloatRect rendererBoundingBox;
FloatRect normalizedRect = toNormalizedRect(inputRect, renderer, rendererBoundingBox);
renderer = renderer->container();
// Go up across frames.
while (renderer) {
// Go up the render tree until we reach the root of the current frame (the RenderView).
for (const RenderObject* container = renderer->container(); container; renderer = container, container = container->container()) {
// Compose the normalized rects. The absolute bounding box of the container is calculated in toNormalizedRect
// and can be reused for the next iteration of the loop.
FloatRect normalizedBoxRect = toNormalizedRect(rendererBoundingBox, renderer, rendererBoundingBox);
normalizedRect.scale(normalizedBoxRect.width(), normalizedBoxRect.height());
normalizedRect.moveBy(normalizedBoxRect.location());
if (normalizedRect.isEmpty())
return normalizedRect;
}
// Jump to the renderer owning the frame, if any.
ASSERT(renderer->isRenderView());
renderer = renderer->frame() ? renderer->frame()->ownerRenderer() : 0;
// Update the absolute coordinates to the new frame.
if (renderer)
rendererBoundingBox = renderer->absoluteBoundingBoxRect();
}
return normalizedRect;
}
FloatRect GraphicsContext::roundToDevicePixels(const FloatRect& frect, RoundingMode)
{
FloatRect result;
double x = frect.x();
double y = frect.y();
cairo_t* cr = platformContext()->cr();
cairo_user_to_device(cr, &x, &y);
x = round(x);
y = round(y);
cairo_device_to_user(cr, &x, &y);
result.setX(narrowPrecisionToFloat(x));
result.setY(narrowPrecisionToFloat(y));
// We must ensure width and height are at least 1 (or -1) when
// we're given float values in the range between 0 and 1 (or -1 and 0).
double width = frect.width();
double height = frect.height();
cairo_user_to_device_distance(cr, &width, &height);
if (width > -1 && width < 0)
width = -1;
else if (width > 0 && width < 1)
width = 1;
else
width = round(width);
if (height > -1 && width < 0)
height = -1;
else if (height > 0 && height < 1)
height = 1;
else
height = round(height);
cairo_device_to_user_distance(cr, &width, &height);
result.setWidth(narrowPrecisionToFloat(width));
result.setHeight(narrowPrecisionToFloat(height));
return result;
}
void BitmapImage::draw(GraphicsContext* ctxt, const FloatRect& dstRect, const FloatRect& srcRectIn, ColorSpace styleColorSpace, CompositeOperator compositeOp)
{
if (!m_source.initialized())
return;
if (mayFillWithSolidColor())
fillWithSolidColor(ctxt, dstRect, solidColor(), styleColorSpace, compositeOp);
else {
IntRect intSrcRect(srcRectIn);
RefPtr<SharedBitmap> bmp = frameAtIndex(m_currentFrame);
if (bmp->width() != m_source.size().width()) {
double scaleFactor = static_cast<double>(bmp->width()) / m_source.size().width();
intSrcRect.setX(stableRound(srcRectIn.x() * scaleFactor));
intSrcRect.setWidth(stableRound(srcRectIn.width() * scaleFactor));
intSrcRect.setY(stableRound(srcRectIn.y() * scaleFactor));
intSrcRect.setHeight(stableRound(srcRectIn.height() * scaleFactor));
}
bmp->draw(ctxt, enclosingIntRect(dstRect), intSrcRect, styleColorSpace, compositeOp);
}
startAnimation();
}
void ImageBuffer::drawPattern(GraphicsContext* context, const FloatRect& srcRect, const AffineTransform& patternTransform,
const FloatPoint& phase, ColorSpace styleColorSpace, CompositeOperator op, const FloatRect& dstRect)
{
if (m_data.m_tiledImage && context != m_context.get()) {
FloatRect src = srcRect;
if (src.width() == -1)
src.setWidth(m_data.m_tiledImage->size().width());
if (src.height() == -1)
src.setHeight(m_data.m_tiledImage->size().height());
ASSERT(context->platformContext()->activePainter());
AffineTransform phasedPatternTransform;
phasedPatternTransform.translate(phase.x(), phase.y());
phasedPatternTransform.multLeft(patternTransform);
PatternOpenVG pattern(m_data.m_tiledImage, src);
pattern.setTransformation(phasedPatternTransform);
PainterOpenVG* painter = context->platformContext()->activePainter();
PaintOpenVG currentPaint = painter->fillPaint();
CompositeOperator currentOp = painter->compositeOperation();
painter->setCompositeOperation(op);
painter->setFillPattern(pattern);
painter->drawRect(dstRect, VG_FILL_PATH);
painter->setFillPaint(currentPaint);
painter->setCompositeOperation(currentOp);
return;
}
RefPtr<Image> imageCopy = copyImage();
imageCopy->drawPattern(context, srcRect, patternTransform, phase, styleColorSpace, op, dstRect);
}
void Tile::paintCheckerPattern(GraphicsContext* context, const FloatRect& target)
{
QPainter* painter = context->platformContext();
QTransform worldTransform = painter->worldTransform();
qreal scaleX = worldTransform.m11();
qreal scaleY = worldTransform.m22();
QRect targetViewRect = QRectF(target.x() * scaleX,
target.y() * scaleY,
target.width() * scaleX,
target.height() * scaleY).toAlignedRect();
QTransform adjustedTransform(1., worldTransform.m12(), worldTransform.m13(),
worldTransform.m21(), 1., worldTransform.m23(),
worldTransform.m31(), worldTransform.m32(), worldTransform.m33());
painter->setWorldTransform(adjustedTransform);
painter->drawTiledPixmap(targetViewRect,
checkeredPixmap(),
QPoint(targetViewRect.left() % checkerSize,
targetViewRect.top() % checkerSize));
painter->setWorldTransform(worldTransform);
}
void SVGRootInlineBox::layoutRootBox(const FloatRect& childRect)
{
RenderSVGText& parentBlock = renderSVGText();
// Finally, assign the root block position, now that all content is laid out.
LayoutRect boundingRect = enclosingLayoutRect(childRect);
parentBlock.setLocation(boundingRect.location());
parentBlock.setSize(boundingRect.size());
// Position all children relative to the parent block.
for (InlineBox* child = firstChild(); child; child = child->nextOnLine()) {
// Skip generated content.
if (!child->renderer().node())
continue;
child->adjustPosition(-childRect.x(), -childRect.y());
}
// Position ourselves.
setX(0);
setY(0);
setLogicalWidth(childRect.width());
setLogicalHeight(childRect.height());
setLineTopBottomPositions(0, boundingRect.height(), 0, boundingRect.height());
}
IntRect::IntRect(const FloatRect &r)
: m_location(IntPoint(static_cast<int>(r.x()), static_cast<int>(r.y())))
, m_size(IntSize(static_cast<int>(r.width()), static_cast<int>(r.height())))
{
}
void GraphicsContext::fillRect(const FloatRect& rect)
{
if (paintingDisabled())
return;
CGContextRef context = platformContext();
if (m_state.fillGradient) {
CGContextSaveGState(context);
CGContextConcatCTM(context, m_state.fillGradient->gradientSpaceTransform());
if (hasShadow()) {
CGLayerRef layer = CGLayerCreateWithContext(context, CGSizeMake(rect.width(), rect.height()), 0);
CGContextRef layerContext = CGLayerGetContext(layer);
m_state.fillGradient->paint(layerContext);
CGContextDrawLayerAtPoint(context, CGPointMake(rect.left(), rect.top()), layer);
CGLayerRelease(layer);
} else {
CGContextClipToRect(context, rect);
m_state.fillGradient->paint(this);
}
CGContextRestoreGState(context);
return;
}
if (m_state.fillPattern)
applyFillPattern();
CGContextFillRect(context, rect);
}
std::unique_ptr<ImageBuffer> SVGRenderingContext::createImageBuffer(const FloatRect& targetRect, const FloatRect& clampedRect, ColorSpace colorSpace, RenderingMode renderingMode)
{
IntSize clampedSize = roundedIntSize(clampedRect.size());
IntSize unclampedSize = roundedIntSize(targetRect.size());
// Don't create empty ImageBuffers.
if (clampedSize.isEmpty())
return nullptr;
auto imageBuffer = ImageBuffer::create(clampedSize, renderingMode, 1, colorSpace);
if (!imageBuffer)
return nullptr;
GraphicsContext& imageContext = imageBuffer->context();
// Compensate rounding effects, as the absolute target rect is using floating-point numbers and the image buffer size is integer.
imageContext.scale(FloatSize(unclampedSize.width() / targetRect.width(), unclampedSize.height() / targetRect.height()));
return imageBuffer;
}
void RenderSVGResourceMasker::createMaskImage(MaskerData* maskerData, const SVGMaskElement* maskElement, RenderObject* object)
{
FloatRect objectBoundingBox = object->objectBoundingBox();
// Mask rect clipped with clippingBoundingBox and filterBoundingBox as long as they are present.
maskerData->maskRect = object->repaintRectInLocalCoordinates();
if (maskerData->maskRect.isEmpty()) {
maskerData->emptyMask = true;
return;
}
if (m_maskBoundaries.isEmpty())
calculateMaskContentRepaintRect();
FloatRect repaintRect = m_maskBoundaries;
AffineTransform contextTransform;
// We need to scale repaintRect for objectBoundingBox to get the drawing area.
if (maskElement->maskContentUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) {
contextTransform.scaleNonUniform(objectBoundingBox.width(), objectBoundingBox.height());
FloatPoint contextAdjustment = repaintRect.location();
repaintRect = contextTransform.mapRect(repaintRect);
repaintRect.move(objectBoundingBox.x(), objectBoundingBox.y());
contextTransform.translate(-contextAdjustment.x(), -contextAdjustment.y());
}
repaintRect.intersect(maskerData->maskRect);
maskerData->maskRect = repaintRect;
IntRect maskImageRect = enclosingIntRect(maskerData->maskRect);
maskImageRect.setLocation(IntPoint());
// Don't create ImageBuffers with image size of 0
if (maskImageRect.isEmpty()) {
maskerData->emptyMask = true;
return;
}
// FIXME: This changes color space to linearRGB, the default color space
// for masking operations in SVG. We need a switch for the other color-space
// attribute values sRGB, inherit and auto.
maskerData->maskImage = ImageBuffer::create(maskImageRect.size(), LinearRGB);
if (!maskerData->maskImage)
return;
GraphicsContext* maskImageContext = maskerData->maskImage->context();
ASSERT(maskImageContext);
maskImageContext->save();
if (maskElement->maskContentUnits() == SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE)
maskImageContext->translate(-maskerData->maskRect.x(), -maskerData->maskRect.y());
maskImageContext->concatCTM(contextTransform);
// draw the content into the ImageBuffer
for (Node* node = maskElement->firstChild(); node; node = node->nextSibling()) {
RenderObject* renderer = node->renderer();
if (!node->isSVGElement() || !static_cast<SVGElement*>(node)->isStyled() || !renderer)
continue;
RenderStyle* style = renderer->style();
if (!style || style->display() == NONE || style->visibility() != VISIBLE)
continue;
renderSubtreeToImage(maskerData->maskImage.get(), renderer);
}
maskImageContext->restore();
// create the luminance mask
RefPtr<ImageData> imageData(maskerData->maskImage->getUnmultipliedImageData(maskImageRect));
CanvasPixelArray* srcPixelArray(imageData->data());
for (unsigned pixelOffset = 0; pixelOffset < srcPixelArray->length(); pixelOffset += 4) {
unsigned char a = srcPixelArray->get(pixelOffset + 3);
if (!a)
continue;
unsigned char r = srcPixelArray->get(pixelOffset);
unsigned char g = srcPixelArray->get(pixelOffset + 1);
unsigned char b = srcPixelArray->get(pixelOffset + 2);
double luma = (r * 0.2125 + g * 0.7154 + b * 0.0721) * ((double)a / 255.0);
srcPixelArray->set(pixelOffset + 3, luma);
}
maskerData->maskImage->putUnmultipliedImageData(imageData.get(), maskImageRect, IntPoint());
}
void BitmapImage::draw(GraphicsContext* ctxt, const FloatRect& destRect, const FloatRect& srcRect, ColorSpace styleColorSpace, CompositeOperator compositeOp, BlendMode blendMode, ImageOrientationDescription description)
{
#if PLATFORM(IOS)
startAnimation(DoNotCatchUp);
#else
startAnimation();
#endif
RetainPtr<CGImageRef> image;
// Never use subsampled images for drawing into PDF contexts.
if (wkCGContextIsPDFContext(ctxt->platformContext()))
image = adoptCF(copyUnscaledFrameAtIndex(m_currentFrame));
else {
CGRect transformedDestinationRect = CGRectApplyAffineTransform(destRect, CGContextGetCTM(ctxt->platformContext()));
float subsamplingScale = std::min<float>(1, std::max(transformedDestinationRect.size.width / srcRect.width(), transformedDestinationRect.size.height / srcRect.height()));
image = frameAtIndex(m_currentFrame, subsamplingScale);
}
if (!image) // If it's too early we won't have an image yet.
return;
if (mayFillWithSolidColor()) {
fillWithSolidColor(ctxt, destRect, solidColor(), styleColorSpace, compositeOp);
return;
}
// Subsampling may have given us an image that is smaller than size().
IntSize imageSize(CGImageGetWidth(image.get()), CGImageGetHeight(image.get()));
// srcRect is in the coordinates of the unsubsampled image, so we have to map it to the subsampled image.
FloatRect scaledSrcRect = srcRect;
if (imageSize != m_size) {
FloatRect originalImageBounds(FloatPoint(), m_size);
FloatRect subsampledImageBounds(FloatPoint(), imageSize);
scaledSrcRect = mapRect(srcRect, originalImageBounds, subsampledImageBounds);
}
ImageOrientation orientation;
if (description.respectImageOrientation() == RespectImageOrientation)
orientation = frameOrientationAtIndex(m_currentFrame);
ctxt->drawNativeImage(image.get(), imageSize, styleColorSpace, destRect, scaledSrcRect, compositeOp, blendMode, orientation);
if (imageObserver())
imageObserver()->didDraw(this);
}
FloatRect RenderSVGResourceFilterPrimitive::determineFilterPrimitiveSubregion(FilterEffect* effect, SVGFilter* filter)
{
FloatRect uniteRect;
FloatRect subregionBoundingBox = effect->effectBoundaries();
FloatRect subregion = subregionBoundingBox;
if (effect->filterEffectType() != FilterEffectTypeTile) {
// FETurbulence, FEImage and FEFlood don't have input effects, take the filter region as unite rect.
if (unsigned numberOfInputEffects = effect->inputEffects().size()) {
for (unsigned i = 0; i < numberOfInputEffects; ++i)
uniteRect.unite(determineFilterPrimitiveSubregion(effect->inputEffect(i), filter));
} else
uniteRect = filter->filterRegionInUserSpace();
} else {
determineFilterPrimitiveSubregion(effect->inputEffect(0), filter);
uniteRect = filter->filterRegionInUserSpace();
}
if (filter->effectBoundingBoxMode()) {
subregion = uniteRect;
// Avoid the calling of a virtual method several times.
FloatRect targetBoundingBox = filter->targetBoundingBox();
if (effect->hasX())
subregion.setX(targetBoundingBox.x() + subregionBoundingBox.x() * targetBoundingBox.width());
if (effect->hasY())
subregion.setY(targetBoundingBox.y() + subregionBoundingBox.y() * targetBoundingBox.height());
if (effect->hasWidth())
subregion.setWidth(subregionBoundingBox.width() * targetBoundingBox.width());
if (effect->hasHeight())
subregion.setHeight(subregionBoundingBox.height() * targetBoundingBox.height());
} else {
if (!effect->hasX())
subregion.setX(uniteRect.x());
if (!effect->hasY())
subregion.setY(uniteRect.y());
if (!effect->hasWidth())
subregion.setWidth(uniteRect.width());
if (!effect->hasHeight())
subregion.setHeight(uniteRect.height());
}
effect->setFilterPrimitiveSubregion(subregion);
FloatRect absoluteSubregion = filter->mapLocalRectToAbsoluteRect(subregion);
FloatSize filterResolution = filter->filterResolution();
absoluteSubregion.scale(filterResolution.width(), filterResolution.height());
// FEImage needs the unclipped subregion in absolute coordinates to determine the correct
// destination rect in combination with preserveAspectRatio.
if (effect->filterEffectType() == FilterEffectTypeImage)
reinterpret_cast<FEImage*>(effect)->setAbsoluteSubregion(absoluteSubregion);
// Clip every filter effect to the filter region.
FloatRect absoluteScaledFilterRegion = filter->filterRegion();
absoluteScaledFilterRegion.scale(filterResolution.width(), filterResolution.height());
absoluteSubregion.intersect(absoluteScaledFilterRegion);
effect->setMaxEffectRect(enclosingIntRect(absoluteSubregion));
return subregion;
}
PassRefPtr<const SkPicture> LayoutSVGResourceClipper::createContentPicture(AffineTransform& contentTransformation, const FloatRect& targetBoundingBox,
GraphicsContext& context)
{
ASSERT(frame());
if (clipPathUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) {
contentTransformation.translate(targetBoundingBox.x(), targetBoundingBox.y());
contentTransformation.scaleNonUniform(targetBoundingBox.width(), targetBoundingBox.height());
}
if (m_clipContentPicture)
return m_clipContentPicture;
SubtreeContentTransformScope contentTransformScope(contentTransformation);
// Using strokeBoundingBox (instead of paintInvalidationRectInLocalCoordinates) to avoid the intersection
// with local clips/mask, which may yield incorrect results when mixing objectBoundingBox and
// userSpaceOnUse units (http://crbug.com/294900).
FloatRect bounds = strokeBoundingBox();
SkPictureBuilder pictureBuilder(bounds, nullptr, &context);
for (SVGElement* childElement = Traversal<SVGElement>::firstChild(*element()); childElement; childElement = Traversal<SVGElement>::nextSibling(*childElement)) {
LayoutObject* layoutObject = childElement->layoutObject();
if (!layoutObject)
continue;
const ComputedStyle* style = layoutObject->style();
if (!style || style->display() == NONE || style->visibility() != VISIBLE)
continue;
bool isUseElement = isSVGUseElement(*childElement);
if (isUseElement) {
const SVGGraphicsElement* clippingElement = toSVGUseElement(*childElement).targetGraphicsElementForClipping();
if (!clippingElement)
continue;
layoutObject = clippingElement->layoutObject();
if (!layoutObject)
continue;
}
// Only shapes, paths and texts are allowed for clipping.
if (!layoutObject->isSVGShape() && !layoutObject->isSVGText())
continue;
if (isUseElement)
layoutObject = childElement->layoutObject();
// Switch to a paint behavior where all children of this <clipPath> will be laid out using special constraints:
// - fill-opacity/stroke-opacity/opacity set to 1
// - masker/filter not applied when laying out the children
// - fill is set to the initial fill paint server (solid, black)
// - stroke is set to the initial stroke paint server (none)
PaintInfo info(pictureBuilder.context(), LayoutRect::infiniteIntRect(), PaintPhaseForeground, GlobalPaintNormalPhase, PaintLayerPaintingRenderingClipPathAsMask);
layoutObject->paint(info, IntPoint());
}
m_clipContentPicture = pictureBuilder.endRecording();
return m_clipContentPicture;
}
PatternData* RenderSVGResourcePattern::buildPattern(RenderElement& renderer, unsigned short resourceMode, GraphicsContext& context)
{
PatternData* currentData = m_patternMap.get(&renderer);
if (currentData && currentData->pattern)
return currentData;
if (m_shouldCollectPatternAttributes) {
patternElement().synchronizeAnimatedSVGAttribute(anyQName());
m_attributes = PatternAttributes();
patternElement().collectPatternAttributes(m_attributes);
m_shouldCollectPatternAttributes = false;
}
// If we couldn't determine the pattern content element root, stop here.
if (!m_attributes.patternContentElement())
return nullptr;
// An empty viewBox disables rendering.
if (m_attributes.hasViewBox() && m_attributes.viewBox().isEmpty())
return nullptr;
// Compute all necessary transformations to build the tile image & the pattern.
FloatRect tileBoundaries;
AffineTransform tileImageTransform;
if (!buildTileImageTransform(renderer, m_attributes, patternElement(), tileBoundaries, tileImageTransform))
return nullptr;
AffineTransform absoluteTransformIgnoringRotation = SVGRenderingContext::calculateTransformationToOutermostCoordinateSystem(renderer);
// Ignore 2D rotation, as it doesn't affect the size of the tile.
SVGRenderingContext::clear2DRotation(absoluteTransformIgnoringRotation);
FloatRect absoluteTileBoundaries = absoluteTransformIgnoringRotation.mapRect(tileBoundaries);
FloatRect clampedAbsoluteTileBoundaries;
// Scale the tile size to match the scale level of the patternTransform.
absoluteTileBoundaries.scale(static_cast<float>(m_attributes.patternTransform().xScale()),
static_cast<float>(m_attributes.patternTransform().yScale()));
// Build tile image.
auto tileImage = createTileImage(m_attributes, tileBoundaries, absoluteTileBoundaries, tileImageTransform, clampedAbsoluteTileBoundaries, context.isAcceleratedContext() ? Accelerated : Unaccelerated);
if (!tileImage)
return nullptr;
RefPtr<Image> copiedImage = tileImage->copyImage(CopyBackingStore);
if (!copiedImage)
return nullptr;
// Build pattern.
auto patternData = std::make_unique<PatternData>();
patternData->pattern = Pattern::create(copiedImage, true, true);
// Compute pattern space transformation.
const IntSize tileImageSize = tileImage->logicalSize();
patternData->transform.translate(tileBoundaries.x(), tileBoundaries.y());
patternData->transform.scale(tileBoundaries.width() / tileImageSize.width(), tileBoundaries.height() / tileImageSize.height());
AffineTransform patternTransform = m_attributes.patternTransform();
if (!patternTransform.isIdentity())
patternData->transform = patternTransform * patternData->transform;
// Account for text drawing resetting the context to non-scaled, see SVGInlineTextBox::paintTextWithShadows.
if (resourceMode & ApplyToTextMode) {
AffineTransform additionalTextTransformation;
if (shouldTransformOnTextPainting(renderer, additionalTextTransformation))
patternData->transform *= additionalTextTransformation;
}
patternData->pattern->setPatternSpaceTransform(patternData->transform);
// Various calls above may trigger invalidations in some fringe cases (ImageBuffer allocation
// failures in the SVG image cache for example). To avoid having our PatternData deleted by
// removeAllClientsFromCache(), we only make it visible in the cache at the very end.
return m_patternMap.set(&renderer, WTF::move(patternData)).iterator->value.get();
}
void WebPopupMenuProxyWin::calculatePositionAndSize(const IntRect& rect)
{
// Convert the rect (which is in view cooridates) into screen coordinates.
IntRect rectInScreenCoords = rect;
POINT location(rectInScreenCoords .location());
if (!::ClientToScreen(m_webView->window(), &location))
return;
rectInScreenCoords.setLocation(location);
int itemCount = m_items.size();
m_itemHeight = m_data.m_itemHeight;
int naturalHeight = m_itemHeight * itemCount;
int popupHeight = min(maxPopupHeight, naturalHeight);
// The popup should show an integral number of items (i.e. no partial items should be visible)
popupHeight -= popupHeight % m_itemHeight;
// Next determine its width
int popupWidth = m_data.m_popupWidth;
if (naturalHeight > maxPopupHeight) {
// We need room for a scrollbar
popupWidth += ScrollbarTheme::nativeTheme()->scrollbarThickness(SmallScrollbar);
}
popupHeight += 2 * popupWindowBorderWidth;
// The popup should be at least as wide as the control on the page
popupWidth = max(rectInScreenCoords.width() - m_data.m_clientInsetLeft - m_data.m_clientInsetRight, popupWidth);
// Always left-align items in the popup. This matches popup menus on the mac.
int popupX = rectInScreenCoords.x() + m_data.m_clientInsetLeft;
IntRect popupRect(popupX, rectInScreenCoords.maxY(), popupWidth, popupHeight);
// The popup needs to stay within the bounds of the screen and not overlap any toolbars
HMONITOR monitor = ::MonitorFromWindow(m_webView->window(), MONITOR_DEFAULTTOPRIMARY);
MONITORINFOEX monitorInfo;
monitorInfo.cbSize = sizeof(MONITORINFOEX);
::GetMonitorInfo(monitor, &monitorInfo);
FloatRect screen = monitorInfo.rcWork;
// Check that we don't go off the screen vertically
if (popupRect.maxY() > screen.height()) {
// The popup will go off the screen, so try placing it above the client
if (rectInScreenCoords.y() - popupRect.height() < 0) {
// The popup won't fit above, either, so place it whereever's bigger and resize it to fit
if ((rectInScreenCoords.y() + rectInScreenCoords.height() / 2) < (screen.height() / 2)) {
// Below is bigger
popupRect.setHeight(screen.height() - popupRect.y());
} else {
// Above is bigger
popupRect.setY(0);
popupRect.setHeight(rectInScreenCoords.y());
}
} else {
// The popup fits above, so reposition it
popupRect.setY(rectInScreenCoords.y() - popupRect.height());
}
}
// Check that we don't go off the screen horizontally
if (popupRect.x() < screen.x()) {
popupRect.setWidth(popupRect.width() - (screen.x() - popupRect.x()));
popupRect.setX(screen.x());
}
m_windowRect = popupRect;
}
PassOwnPtr<ImageBuffer> RenderSVGResourcePattern::createTileImage(PatternData* patternData,
const SVGPatternElement* patternElement,
RenderObject* object) const
{
PatternAttributes attributes = patternElement->collectPatternProperties();
// If we couldn't determine the pattern content element root, stop here.
if (!attributes.patternContentElement())
return 0;
FloatRect objectBoundingBox = object->objectBoundingBox();
FloatRect patternBoundaries = calculatePatternBoundaries(attributes, objectBoundingBox, patternElement);
AffineTransform patternTransform = attributes.patternTransform();
AffineTransform viewBoxCTM = patternElement->viewBoxToViewTransform(patternElement->viewBox(),
patternElement->preserveAspectRatio(),
patternBoundaries.width(),
patternBoundaries.height());
FloatRect patternBoundariesIncludingOverflow = calculatePatternBoundariesIncludingOverflow(attributes,
objectBoundingBox,
viewBoxCTM,
patternBoundaries);
IntSize imageSize(lroundf(patternBoundariesIncludingOverflow.width()), lroundf(patternBoundariesIncludingOverflow.height()));
// FIXME: We should be able to clip this more, needs investigation
clampImageBufferSizeToViewport(object->document()->view(), imageSize);
// Don't create ImageBuffers with image size of 0
if (imageSize.isEmpty())
return 0;
OwnPtr<ImageBuffer> tileImage = ImageBuffer::create(imageSize);
GraphicsContext* context = tileImage->context();
ASSERT(context);
context->save();
// Translate to pattern start origin
if (patternBoundariesIncludingOverflow.location() != patternBoundaries.location()) {
context->translate(patternBoundaries.x() - patternBoundariesIncludingOverflow.x(),
patternBoundaries.y() - patternBoundariesIncludingOverflow.y());
patternBoundaries.setLocation(patternBoundariesIncludingOverflow.location());
}
// Process viewBox or boundingBoxModeContent correction
if (!viewBoxCTM.isIdentity())
context->concatCTM(viewBoxCTM);
else if (attributes.boundingBoxModeContent()) {
context->translate(objectBoundingBox.x(), objectBoundingBox.y());
context->scale(FloatSize(objectBoundingBox.width(), objectBoundingBox.height()));
}
// Render subtree into ImageBuffer
for (Node* node = attributes.patternContentElement()->firstChild(); node; node = node->nextSibling()) {
if (!node->isSVGElement() || !static_cast<SVGElement*>(node)->isStyled() || !node->renderer())
continue;
renderSubtreeToImage(tileImage.get(), node->renderer());
}
patternData->boundaries = patternBoundaries;
// Compute pattern transformation
patternData->transform.translate(patternBoundaries.x(), patternBoundaries.y());
patternData->transform.multiply(patternTransform);
context->restore();
return tileImage.release();
}
bool SVGPaintServerGradient::setup(GraphicsContext*& context, const RenderObject* object, SVGPaintTargetType type, bool isPaintingText) const
{
m_ownerElement->buildGradient();
cairo_t* cr = context->platformContext();
cairo_pattern_t* pattern;
cairo_matrix_t matrix;
cairo_matrix_init_identity (&matrix);
const cairo_matrix_t gradient_matrix = gradientTransform();
if (this->type() == LinearGradientPaintServer) {
const SVGPaintServerLinearGradient* linear = static_cast<const SVGPaintServerLinearGradient*>(this);
if (boundingBoxMode()) {
FloatRect bbox = object->relativeBBox(false);
cairo_matrix_translate(&matrix, bbox.x(), bbox.y());
cairo_matrix_scale(&matrix, bbox.width(), bbox.height());
}
double x0 = linear->gradientStart().x();
double y0 = linear->gradientStart().y();
double x1 = linear->gradientEnd().x();
double y1 = linear->gradientEnd().y();
pattern = cairo_pattern_create_linear(x0, y0, x1, y1);
} else if (this->type() == RadialGradientPaintServer) {
const SVGPaintServerRadialGradient* radial = static_cast<const SVGPaintServerRadialGradient*>(this);
if (boundingBoxMode()) {
FloatRect bbox = object->relativeBBox(false);
cairo_matrix_translate(&matrix, bbox.x(), bbox.y());
cairo_matrix_scale(&matrix, bbox.width(), bbox.height());
}
double cx = radial->gradientCenter().x();
double cy = radial->gradientCenter().y();
double radius = radial->gradientRadius();
double fx = radial->gradientFocal().x();
double fy = radial->gradientFocal().y();
fx -= cx;
fy -= cy;
double fradius = 0.0;
if (sqrt(fx * fx + fy * fy) > radius) {
double angle = atan2(fy, fx);
if ((fx + cx) < cx)
fx = int(cos(angle) * radius) + 1;
else
fx = int(cos(angle) * radius) - 1;
if ((fy + cy) < cy)
fy = int(sin(angle) * radius) + 1;
else
fy = int(sin(angle) * radius) - 1;
}
pattern = cairo_pattern_create_radial(fx + cx, fy + cy, fradius, cx, cy, radius);
} else {
return false;
}
cairo_pattern_set_filter(pattern, CAIRO_FILTER_BILINEAR);
switch (spreadMethod()) {
case SPREADMETHOD_PAD:
cairo_pattern_set_extend(pattern, CAIRO_EXTEND_PAD);
break;
case SPREADMETHOD_REFLECT:
cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REFLECT);
break;
case SPREADMETHOD_REPEAT:
cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT);
break;
default:
cairo_pattern_set_extend(pattern, CAIRO_EXTEND_NONE);
break;
}
cairo_matrix_multiply(&matrix, &matrix, &gradient_matrix);
cairo_matrix_invert(&matrix);
cairo_pattern_set_matrix(pattern, &matrix);
const Vector<SVGGradientStop>& stops = gradientStops();
for (unsigned i = 0; i < stops.size(); ++i) {
float offset = stops[i].first;
Color color = stops[i].second;
cairo_pattern_add_color_stop_rgba(pattern, offset, color.red() / 255.0, color.green() / 255.0, color.blue() / 255.0, color.alpha() / 255.0);
}
cairo_set_source(cr, pattern);
cairo_pattern_destroy(pattern);
return true;
}
