SVGPaintServer LayoutSVGResourcePattern::preparePaintServer(const LayoutObject& object)
{
clearInvalidationMask();
SVGPatternElement* patternElement = toSVGPatternElement(element());
if (!patternElement)
return SVGPaintServer::invalid();
if (m_shouldCollectPatternAttributes) {
patternElement->synchronizeAnimatedSVGAttribute(anyQName());
#if ENABLE(OILPAN)
m_attributesWrapper->set(PatternAttributes());
#else
m_attributes = PatternAttributes();
#endif
patternElement->collectPatternAttributes(mutableAttributes());
m_shouldCollectPatternAttributes = false;
}
// Spec: When the geometry of the applicable element has no width or height and objectBoundingBox is specified,
// then the given effect (e.g. a gradient or a filter) will be ignored.
FloatRect objectBoundingBox = object.objectBoundingBox();
if (attributes().patternUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX && objectBoundingBox.isEmpty())
return SVGPaintServer::invalid();
PatternData* patternData = patternForLayoutObject(object);
if (!patternData || !patternData->pattern)
return SVGPaintServer::invalid();
patternData->pattern->setPatternSpaceTransform(patternData->transform);
return SVGPaintServer(patternData->pattern);
}
PatternAttributes SVGPatternElement::collectPatternProperties() const
{
PatternAttributes attributes;
HashSet<const SVGPatternElement*> processedPatterns;
const SVGPatternElement* current = this;
while (current) {
if (!attributes.hasX() && current->hasAttribute(SVGNames::xAttr))
attributes.setX(current->x());
if (!attributes.hasY() && current->hasAttribute(SVGNames::yAttr))
attributes.setY(current->y());
if (!attributes.hasWidth() && current->hasAttribute(SVGNames::widthAttr))
attributes.setWidth(current->width());
if (!attributes.hasHeight() && current->hasAttribute(SVGNames::heightAttr))
attributes.setHeight(current->height());
if (!attributes.hasBoundingBoxMode() && current->hasAttribute(SVGNames::patternUnitsAttr))
attributes.setBoundingBoxMode(current->patternUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
if (!attributes.hasBoundingBoxModeContent() && current->hasAttribute(SVGNames::patternContentUnitsAttr))
attributes.setBoundingBoxModeContent(current->patternContentUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
if (!attributes.hasPatternTransform() && current->hasAttribute(SVGNames::patternTransformAttr))
attributes.setPatternTransform(current->patternTransform()->consolidate().matrix());
if (!attributes.hasPatternContentElement() && current->hasChildNodes())
attributes.setPatternContentElement(current);
processedPatterns.add(current);
// Respect xlink:href, take attributes from referenced element
Node* refNode = ownerDocument()->getElementById(SVGURIReference::getTarget(current->href()));
if (refNode && refNode->hasTagName(SVGNames::patternTag)) {
current = static_cast<const SVGPatternElement*>(const_cast<const Node*>(refNode));
// Cycle detection
if (processedPatterns.contains(current))
return PatternAttributes();
} else
current = 0;
}
return attributes;
}
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();
}
bool RenderSVGResourcePattern::applyResource(RenderObject* object, RenderStyle* style, GraphicsContext*& context, unsigned short resourceMode)
{
ASSERT(object);
ASSERT(style);
ASSERT(context);
ASSERT(resourceMode != ApplyToDefaultMode);
// Be sure to synchronize all SVG properties on the patternElement _before_ processing any further.
// Otherwhise the call to collectPatternAttributes() below, may cause the SVG DOM property
// synchronization to kick in, which causes removeAllClientsFromCache() to be called, which in turn deletes our
// PatternData object! Leaving out the line below will cause svg/dynamic-updates/SVGPatternElement-svgdom* to crash.
SVGPatternElement* patternElement = static_cast<SVGPatternElement*>(node());
if (!patternElement)
return false;
if (m_shouldCollectPatternAttributes) {
patternElement->updateAnimatedSVGAttribute(anyQName());
m_attributes = PatternAttributes();
patternElement->collectPatternAttributes(m_attributes);
m_shouldCollectPatternAttributes = false;
}
// Spec: When the geometry of the applicable element has no width or height and objectBoundingBox is specified,
// then the given effect (e.g. a gradient or a filter) will be ignored.
FloatRect objectBoundingBox = object->objectBoundingBox();
if (m_attributes.boundingBoxMode() && objectBoundingBox.isEmpty())
return false;
if (!m_pattern.contains(object))
m_pattern.set(object, new PatternData);
PatternData* patternData = m_pattern.get(object);
if (!patternData->pattern) {
// If we couldn't determine the pattern content element root, stop here.
if (!m_attributes.patternContentElement())
return false;
// Compute all necessary transformations to build the tile image & the pattern.
FloatRect tileBoundaries;
AffineTransform tileImageTransform;
if (!buildTileImageTransform(object, m_attributes, patternElement, tileBoundaries, tileImageTransform))
return false;
AffineTransform absoluteTransform;
SVGImageBufferTools::calculateTransformationToOutermostSVGCoordinateSystem(object, absoluteTransform);
FloatRect absoluteTileBoundaries = absoluteTransform.mapRect(tileBoundaries);
// Build tile image.
OwnPtr<ImageBuffer> tileImage = createTileImage(object, m_attributes, tileBoundaries, absoluteTileBoundaries, tileImageTransform);
if (!tileImage)
return false;
RefPtr<Image> copiedImage = tileImage->copyImage();
if (!copiedImage)
return false;
// Build pattern.
patternData->pattern = Pattern::create(copiedImage, true, true);
if (!patternData->pattern)
return false;
// Compute pattern space transformation.
patternData->transform.translate(tileBoundaries.x(), tileBoundaries.y());
patternData->transform.scale(tileBoundaries.width() / absoluteTileBoundaries.width(), tileBoundaries.height() / absoluteTileBoundaries.height());
AffineTransform patternTransform = m_attributes.patternTransform();
if (!patternTransform.isIdentity())
patternData->transform = patternTransform * patternData->transform;
patternData->pattern->setPatternSpaceTransform(patternData->transform);
}
// Draw pattern
context->save();
const SVGRenderStyle* svgStyle = style->svgStyle();
ASSERT(svgStyle);
if (resourceMode & ApplyToFillMode) {
context->setAlpha(svgStyle->fillOpacity());
context->setFillPattern(patternData->pattern);
context->setFillRule(svgStyle->fillRule());
} else if (resourceMode & ApplyToStrokeMode) {
if (svgStyle->vectorEffect() == VE_NON_SCALING_STROKE)
patternData->pattern->setPatternSpaceTransform(transformOnNonScalingStroke(object, patternData->transform));
context->setAlpha(svgStyle->strokeOpacity());
context->setStrokePattern(patternData->pattern);
SVGRenderSupport::applyStrokeStyleToContext(context, style, object);
}
if (resourceMode & ApplyToTextMode) {
if (resourceMode & ApplyToFillMode) {
context->setTextDrawingMode(TextModeFill);
#if PLATFORM(CG)
context->applyFillPattern();
#endif
} else if (resourceMode & ApplyToStrokeMode) {
context->setTextDrawingMode(TextModeStroke);
#if PLATFORM(CG)
context->applyStrokePattern();
#endif
}
}
return true;
}
bool RenderSVGResourcePattern::applyResource(RenderObject* object, RenderStyle* style, GraphicsContext*& context, unsigned short resourceMode)
{
ASSERT(object);
ASSERT(style);
ASSERT(context);
ASSERT(resourceMode != ApplyToDefaultMode);
// Be sure to synchronize all SVG properties on the patternElement _before_ processing any further.
// Otherwhise the call to collectPatternAttributes() below, may cause the SVG DOM property
// synchronization to kick in, which causes removeAllClientsFromCache() to be called, which in turn deletes our
// PatternData object! Leaving out the line below will cause svg/dynamic-updates/SVGPatternElement-svgdom* to crash.
SVGPatternElement* patternElement = static_cast<SVGPatternElement*>(node());
if (!patternElement)
return false;
if (m_shouldCollectPatternAttributes) {
patternElement->updateAnimatedSVGAttribute(anyQName());
m_attributes = PatternAttributes();
patternElement->collectPatternAttributes(m_attributes);
m_shouldCollectPatternAttributes = false;
}
// Spec: When the geometry of the applicable element has no width or height and objectBoundingBox is specified,
// then the given effect (e.g. a gradient or a filter) will be ignored.
FloatRect objectBoundingBox = object->objectBoundingBox();
if (m_attributes.patternUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX && objectBoundingBox.isEmpty())
return false;
OwnPtr<PatternData>& patternData = m_patternMap.add(object, nullptr).iterator->second;
if (!patternData)
patternData = adoptPtr(new PatternData);
if (!patternData->pattern) {
// If we couldn't determine the pattern content element root, stop here.
if (!m_attributes.patternContentElement())
return false;
// Compute all necessary transformations to build the tile image & the pattern.
FloatRect tileBoundaries;
AffineTransform tileImageTransform;
if (!buildTileImageTransform(object, m_attributes, patternElement, tileBoundaries, tileImageTransform))
return false;
AffineTransform absoluteTransformIgnoringRotation;
SVGRenderingContext::calculateTransformationToOutermostSVGCoordinateSystem(object, absoluteTransformIgnoringRotation);
// 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.
OwnPtr<ImageBuffer> tileImage = createTileImage(m_attributes, tileBoundaries, absoluteTileBoundaries, tileImageTransform, clampedAbsoluteTileBoundaries);
if (!tileImage)
return false;
RefPtr<Image> copiedImage = tileImage->copyImage(CopyBackingStore);
if (!copiedImage)
return false;
// Build pattern.
patternData->pattern = Pattern::create(copiedImage, true, true);
if (!patternData->pattern)
return false;
// Compute pattern space transformation.
patternData->transform.translate(tileBoundaries.x(), tileBoundaries.y());
patternData->transform.scale(tileBoundaries.width() / clampedAbsoluteTileBoundaries.width(), tileBoundaries.height() / clampedAbsoluteTileBoundaries.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(object, additionalTextTransformation))
patternData->transform *= additionalTextTransformation;
}
patternData->pattern->setPatternSpaceTransform(patternData->transform);
}
// Draw pattern
context->save();
const SVGRenderStyle* svgStyle = style->svgStyle();
ASSERT(svgStyle);
if (resourceMode & ApplyToFillMode) {
context->setAlpha(svgStyle->fillOpacity());
context->setFillPattern(patternData->pattern);
context->setFillRule(svgStyle->fillRule());
} else if (resourceMode & ApplyToStrokeMode) {
if (svgStyle->vectorEffect() == VE_NON_SCALING_STROKE)
patternData->pattern->setPatternSpaceTransform(transformOnNonScalingStroke(object, patternData->transform));
context->setAlpha(svgStyle->strokeOpacity());
context->setStrokePattern(patternData->pattern);
SVGRenderSupport::applyStrokeStyleToContext(context, style, object);
}
if (resourceMode & ApplyToTextMode) {
if (resourceMode & ApplyToFillMode) {
context->setTextDrawingMode(TextModeFill);
#if USE(CG)
context->applyFillPattern();
#endif
} else if (resourceMode & ApplyToStrokeMode) {
context->setTextDrawingMode(TextModeStroke);
#if USE(CG)
context->applyStrokePattern();
#endif
}
}
return true;
}
PatternData* RenderSVGResourcePattern::buildPattern(RenderObject* object, unsigned short resourceMode)
{
ASSERT(object);
PatternData* currentData = m_patternMap.get(object);
if (currentData && currentData->pattern)
return currentData;
SVGPatternElement* patternElement = toSVGPatternElement(element());
if (!patternElement)
return 0;
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 0;
// An empty viewBox disables rendering.
if (m_attributes.hasViewBox() && m_attributes.viewBox().isEmpty())
return 0;
// Compute all necessary transformations to build the tile image & the pattern.
FloatRect tileBoundaries;
AffineTransform tileImageTransform;
if (!buildTileImageTransform(object, m_attributes, patternElement, tileBoundaries, tileImageTransform))
return 0;
AffineTransform absoluteTransformIgnoringRotation;
SVGRenderingContext::calculateDeviceSpaceTransformation(object, absoluteTransformIgnoringRotation);
// Ignore 2D rotation, as it doesn't affect the size of the tile.
SVGRenderingContext::clear2DRotation(absoluteTransformIgnoringRotation);
FloatRect absoluteTileBoundaries = absoluteTransformIgnoringRotation.mapRect(tileBoundaries);
// 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.
OwnPtr<ImageBuffer> tileImage = createTileImage(m_attributes, tileBoundaries, absoluteTileBoundaries, tileImageTransform);
if (!tileImage)
return 0;
RefPtr<Image> copiedImage = tileImage->copyImage(CopyBackingStore);
if (!copiedImage)
return 0;
// Build pattern.
OwnPtr<PatternData> patternData = adoptPtr(new PatternData);
patternData->pattern = Pattern::create(copiedImage, true, true);
// Compute pattern space transformation.
const IntSize tileImageSize = tileImage->size();
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;
// 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(object, patternData.release()).storedValue->value.get();
}