void RenderSVGShape::layout()
{
StackStats::LayoutCheckPoint layoutCheckPoint;
LayoutRepainter repainter(*this, SVGRenderSupport::checkForSVGRepaintDuringLayout(this) && selfNeedsLayout());
SVGStyledTransformableElement* element = toSVGStyledTransformableElement(node());
bool updateCachedBoundariesInParents = false;
if (m_needsShapeUpdate || m_needsBoundariesUpdate) {
updateShapeFromElement();
m_needsShapeUpdate = false;
updateRepaintBoundingBox();
m_needsBoundariesUpdate = false;
updateCachedBoundariesInParents = true;
}
if (m_needsTransformUpdate) {
m_localTransform = element->animatedLocalTransform();
m_needsTransformUpdate = false;
updateCachedBoundariesInParents = true;
}
// Invalidate all resources of this client if our layout changed.
if (everHadLayout() && selfNeedsLayout())
SVGResourcesCache::clientLayoutChanged(this);
// If our bounds changed, notify the parents.
if (updateCachedBoundariesInParents)
RenderSVGModelObject::setNeedsBoundariesUpdate();
repainter.repaintAfterLayout();
setNeedsLayout(false);
}
void RenderPath::layout()
{
LayoutRepainter repainter(*this, m_everHadLayout && checkForRepaintDuringLayout());
SVGStyledTransformableElement* element = static_cast<SVGStyledTransformableElement*>(node());
bool needsPathUpdate = m_needsPathUpdate;
if (needsPathUpdate) {
m_path = element->toPathData();
m_needsPathUpdate = false;
}
if (m_needsTransformUpdate) {
m_localTransform = element->animatedLocalTransform();
m_needsTransformUpdate = false;
}
// Invalidate all resources of this client if our layout changed.
if (m_everHadLayout && selfNeedsLayout())
SVGResourcesCache::clientLayoutChanged(this);
// At this point LayoutRepainter already grabbed the old bounds,
// recalculate them now so repaintAfterLayout() uses the new bounds
if (needsPathUpdate || m_needsBoundariesUpdate) {
updateCachedBoundaries();
m_needsBoundariesUpdate = false;
}
repainter.repaintAfterLayout();
setNeedsLayout(false);
}
FloatRect RenderSVGResourceClipper::resourceBoundingBox(const FloatRect& objectBoundingBox) const
{
FloatRect clipRect;
for (Node* childNode = node()->firstChild(); childNode; childNode = childNode->nextSibling()) {
if (!childNode->isSVGElement() || !static_cast<SVGElement*>(childNode)->isStyledTransformable())
continue;
SVGStyledTransformableElement* styled = static_cast<SVGStyledTransformableElement*>(childNode);
RenderStyle* style = styled->renderer() ? styled->renderer()->style() : 0;
if (!style || style->display() == NONE)
continue;
clipRect.unite(styled->renderer()->objectBoundingBox());
}
if (clipRect.isEmpty())
return FloatRect();
if (static_cast<SVGClipPathElement*>(node())->clipPathUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) {
AffineTransform obbTransform;
obbTransform.translate(objectBoundingBox.x(), objectBoundingBox.y());
obbTransform.scaleNonUniform(objectBoundingBox.width(), objectBoundingBox.height());
return obbTransform.mapRect(clipRect);
}
return clipRect;
}
SVGResource* SVGClipPathElement::canvasResource()
{
if (!m_clipper)
m_clipper = SVGResourceClipper::create();
else
m_clipper->resetClipData();
bool bbox = clipPathUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX;
RenderStyle* clipPathStyle = styleForRenderer(parent()->renderer()); // FIXME: Manual style resolution is a hack
for (Node* n = firstChild(); n; n = n->nextSibling()) {
if (n->isSVGElement() && static_cast<SVGElement*>(n)->isStyledTransformable()) {
SVGStyledTransformableElement* styled = static_cast<SVGStyledTransformableElement*>(n);
RenderStyle* pathStyle = document()->styleSelector()->styleForElement(styled, clipPathStyle);
if (pathStyle->display() != NONE) {
Path pathData = styled->toClipPath();
// FIXME: How do we know the element has done a layout?
pathData.transform(styled->animatedLocalTransform());
if (!pathData.isEmpty())
m_clipper->addClipData(pathData, pathStyle->svgStyle()->clipRule(), bbox);
}
pathStyle->deref(document()->renderArena());
}
}
if (m_clipper->clipData().isEmpty()) {
Path pathData;
pathData.addRect(FloatRect());
m_clipper->addClipData(pathData, RULE_EVENODD, bbox);
}
clipPathStyle->deref(document()->renderArena());
return m_clipper.get();
}
// FIXME: This does not belong here.
AffineTransform RenderSVGResourceContainer::transformOnNonScalingStroke(RenderObject* object, const AffineTransform& resourceTransform)
{
if (!object->isSVGShape())
return resourceTransform;
SVGStyledTransformableElement* element = static_cast<SVGStyledTransformableElement*>(object->node());
AffineTransform transform = element->getScreenCTM(SVGLocatable::DisallowStyleUpdate);
transform *= resourceTransform;
return transform;
}
bool RenderSVGResourceClipper::pathOnlyClipping(GraphicsContext* context, const AffineTransform& animatedLocalTransform, const FloatRect& objectBoundingBox)
{
// If the current clip-path gets clipped itself, we have to fallback to masking.
if (!style()->svgStyle()->clipperResource().isEmpty())
return false;
WindRule clipRule = RULE_NONZERO;
Path clipPath = Path();
// If clip-path only contains one visible shape or path, we can use path-based clipping. Invisible
// shapes don't affect the clipping and can be ignored. If clip-path contains more than one
// visible shape, the additive clipping may not work, caused by the clipRule. EvenOdd
// as well as NonZero can cause self-clipping of the elements.
// See also http://www.w3.org/TR/SVG/painting.html#FillRuleProperty
for (Node* childNode = node()->firstChild(); childNode; childNode = childNode->nextSibling()) {
RenderObject* renderer = childNode->renderer();
if (!renderer)
continue;
// Only shapes or paths are supported for direct clipping. We need to fallback to masking for texts.
if (renderer->isSVGText())
return false;
if (!childNode->isSVGElement() || !toSVGElement(childNode)->isStyledTransformable())
continue;
SVGStyledTransformableElement* styled = toSVGStyledTransformableElement(childNode);
RenderStyle* style = renderer->style();
if (!style || style->display() == NONE || style->visibility() != VISIBLE)
continue;
const SVGRenderStyle* svgStyle = style->svgStyle();
// Current shape in clip-path gets clipped too. Fallback to masking.
if (!svgStyle->clipperResource().isEmpty())
return false;
// Fallback to masking, if there is more than one clipping path.
if (clipPath.isEmpty()) {
styled->toClipPath(clipPath);
clipRule = svgStyle->clipRule();
} else
return false;
}
// Only one visible shape/path was found. Directly continue clipping and transform the content to userspace if necessary.
if (static_cast<SVGClipPathElement*>(node())->clipPathUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX) {
AffineTransform transform;
transform.translate(objectBoundingBox.x(), objectBoundingBox.y());
transform.scaleNonUniform(objectBoundingBox.width(), objectBoundingBox.height());
clipPath.transform(transform);
}
// Transform path by animatedLocalTransform.
clipPath.transform(animatedLocalTransform);
// The SVG specification wants us to clip everything, if clip-path doesn't have a child.
if (clipPath.isEmpty())
clipPath.addRect(FloatRect());
context->clipPath(clipPath, clipRule);
return true;
}
void RenderPath::layout()
{
LayoutRepainter repainter(*this, checkForRepaintDuringLayout() && selfNeedsLayout());
SVGStyledTransformableElement* element = static_cast<SVGStyledTransformableElement*>(node());
m_localTransform = element->animatedLocalTransform();
setPath(element->toPathData());
repainter.repaintAfterLayout();
setNeedsLayout(false);
}
bool RenderSVGResourceClipper::applyResource(RenderObject* object, GraphicsContext* context)
{
ASSERT(object);
ASSERT(context);
m_clipper.add(object);
context->beginPath();
AffineTransform obbTransform;
FloatRect objectBoundingBox = object->objectBoundingBox();
bool bbox = static_cast<SVGClipPathElement*>(node())->clipPathUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX;
if (bbox) {
obbTransform.translate(objectBoundingBox.x(), objectBoundingBox.y());
obbTransform.scaleNonUniform(objectBoundingBox.width(), objectBoundingBox.height());
}
bool hasClipPath = false;
WindRule clipRule = RULE_EVENODD;
for (Node* childNode = node()->firstChild(); childNode; childNode = childNode->nextSibling()) {
if (!childNode->isSVGElement() || !static_cast<SVGElement*>(childNode)->isStyledTransformable())
continue;
SVGStyledTransformableElement* styled = static_cast<SVGStyledTransformableElement*>(childNode);
RenderStyle* style = styled->renderer() ? styled->renderer()->style() : 0;
if (!style || style->display() == NONE)
continue;
Path pathData = styled->toClipPath();
if (pathData.isEmpty())
continue;
if (bbox)
pathData.transform(obbTransform);
hasClipPath = true;
context->addPath(pathData);
clipRule = style->svgStyle()->clipRule();
}
if (!hasClipPath) {
Path clipPath;
clipPath.addRect(FloatRect());
context->addPath(clipPath);
}
// FIXME!
// We don't currently allow for heterogenous clip rules.
// we would have to detect such, draw to a mask, and then clip
// to that mask
context->clipPath(clipRule);
return true;
}
void RenderSVGPath::fillAndStrokePath(GraphicsContext* context)
{
RenderStyle* style = this->style();
Color fallbackColor;
if (RenderSVGResource* fillPaintingResource = RenderSVGResource::fillPaintingResource(this, style, fallbackColor)) {
if (fillPaintingResource->applyResource(this, style, context, ApplyToFillMode))
fillPaintingResource->postApplyResource(this, context, ApplyToFillMode, &m_path);
else if (fallbackColor.isValid()) {
RenderSVGResourceSolidColor* fallbackResource = RenderSVGResource::sharedSolidPaintingResource();
fallbackResource->setColor(fallbackColor);
if (fallbackResource->applyResource(this, style, context, ApplyToFillMode))
fallbackResource->postApplyResource(this, context, ApplyToFillMode, &m_path);
}
}
fallbackColor = Color();
RenderSVGResource* strokePaintingResource = RenderSVGResource::strokePaintingResource(this, style, fallbackColor);
if (!strokePaintingResource)
return;
Path path;
bool nonScalingStroke = style->svgStyle()->vectorEffect() == VE_NON_SCALING_STROKE;
GraphicsContextStateSaver stateSaver(*context, false);
if (nonScalingStroke) {
SVGStyledTransformableElement* element = static_cast<SVGStyledTransformableElement*>(node());
AffineTransform nonScalingStrokeTransform = element->getScreenCTM(SVGLocatable::DisallowStyleUpdate);
if (!nonScalingStrokeTransform.isInvertible())
return;
path = m_path;
path.transform(nonScalingStrokeTransform);
stateSaver.save();
context->concatCTM(nonScalingStrokeTransform.inverse());
}
if (strokePaintingResource->applyResource(this, style, context, ApplyToStrokeMode))
strokePaintingResource->postApplyResource(this, context, ApplyToStrokeMode, nonScalingStroke ? &path : &m_path);
else if (fallbackColor.isValid()) {
RenderSVGResourceSolidColor* fallbackResource = RenderSVGResource::sharedSolidPaintingResource();
fallbackResource->setColor(fallbackColor);
if (fallbackResource->applyResource(this, style, context, ApplyToStrokeMode))
fallbackResource->postApplyResource(this, context, ApplyToStrokeMode, nonScalingStroke ? &path : &m_path);
}
}
void RenderSVGPath::layout()
{
LayoutRepainter repainter(*this, checkForRepaintDuringLayout() && selfNeedsLayout());
SVGStyledTransformableElement* element = static_cast<SVGStyledTransformableElement*>(node());
bool updateCachedBoundariesInParents = false;
bool needsPathUpdate = m_needsPathUpdate;
if (needsPathUpdate) {
m_path.clear();
element->toPathData(m_path);
m_needsPathUpdate = false;
updateCachedBoundariesInParents = true;
}
if (m_needsTransformUpdate) {
m_localTransform = element->animatedLocalTransform();
m_needsTransformUpdate = false;
updateCachedBoundariesInParents = true;
}
if (m_needsBoundariesUpdate)
updateCachedBoundariesInParents = true;
// Invalidate all resources of this client if our layout changed.
if (m_everHadLayout && selfNeedsLayout()) {
SVGResourcesCache::clientLayoutChanged(this);
m_markerLayoutInfo.clear();
}
// At this point LayoutRepainter already grabbed the old bounds,
// recalculate them now so repaintAfterLayout() uses the new bounds.
if (needsPathUpdate || m_needsBoundariesUpdate) {
updateCachedBoundaries();
m_needsBoundariesUpdate = false;
}
// If our bounds changed, notify the parents.
if (updateCachedBoundariesInParents)
RenderSVGModelObject::setNeedsBoundariesUpdate();
repainter.repaintAfterLayout();
setNeedsLayout(false);
}
bool RenderSVGTransformableContainer::calculateLocalTransform()
{
SVGStyledTransformableElement* element = static_cast<SVGStyledTransformableElement*>(node());
// If we're either the renderer for a <use> element, or for any <g> element inside the shadow
// tree, that was created during the use/symbol/svg expansion in SVGUseElement. These containers
// need to respect the translations induced by their corresponding use elements x/y attributes.
SVGUseElement* useElement = 0;
if (element->hasTagName(SVGNames::useTag))
useElement = static_cast<SVGUseElement*>(element);
else if (element->isInShadowTree() && element->hasTagName(SVGNames::gTag)) {
SVGElement* correspondingElement = element->correspondingElement();
if (correspondingElement && correspondingElement->hasTagName(SVGNames::useTag))
useElement = static_cast<SVGUseElement*>(correspondingElement);
}
if (useElement) {
SVGLengthContext lengthContext(useElement);
FloatSize translation(useElement->x().value(lengthContext), useElement->y().value(lengthContext));
if (translation != m_lastTranslation)
m_needsTransformUpdate = true;
m_lastTranslation = translation;
}
m_didTransformToRootUpdate = m_needsTransformUpdate || SVGRenderSupport::transformToRootChanged(parent());
if (!m_needsTransformUpdate)
return false;
m_localTransform = element->animatedLocalTransform();
m_localTransform.translate(m_lastTranslation.width(), m_lastTranslation.height());
m_needsTransformUpdate = false;
return true;
}
void SVGAnimateMotionElement::applyAnimatedValueToElement()
{
if (!targetElement()->isStyledTransformable())
return;
SVGStyledTransformableElement* transformableElement = static_cast<SVGStyledTransformableElement*>(targetElement());
RefPtr<SVGTransformList> transformList = transformableElement->transform();
if (!transformList)
return;
ExceptionCode ec;
if (!isAdditive())
transformList->clear(ec);
AffineTransform transform;
transform.rotate(m_animatedAngle);
transform.translate(m_animatedTranslation.width(), m_animatedTranslation.height());
if (!transform.isIdentity()) {
transformList->appendItem(SVGTransform(transform), ec);
transformableElement->updateLocalTransform(transformList.get());
}
}
void RenderPath::fillAndStrokePath(GraphicsContext* context)
{
context->beginPath();
RenderStyle* style = this->style();
if (RenderSVGResource* fillPaintingResource = RenderSVGResource::fillPaintingResource(this, style)) {
context->addPath(m_path);
if (fillPaintingResource->applyResource(this, style, context, ApplyToFillMode))
fillPaintingResource->postApplyResource(this, context, ApplyToFillMode);
}
RenderSVGResource* strokePaintingResource = RenderSVGResource::strokePaintingResource(this, style);
if (!strokePaintingResource)
return;
bool restoreContext = false;
if (style->svgStyle()->vectorEffect() == VE_NON_SCALING_STROKE) {
SVGStyledTransformableElement* element = static_cast<SVGStyledTransformableElement*>(node());
AffineTransform nonScalingStrokeTransform = element->getScreenCTM(SVGLocatable::DisallowStyleUpdate);
if (!nonScalingStrokeTransform.isInvertible())
return;
Path transformedPath = m_path;
transformedPath.transform(nonScalingStrokeTransform);
context->save();
context->concatCTM(nonScalingStrokeTransform.inverse());
context->addPath(transformedPath);
restoreContext = true;
} else
context->addPath(m_path);
if (strokePaintingResource->applyResource(this, style, context, ApplyToStrokeMode))
strokePaintingResource->postApplyResource(this, context, ApplyToStrokeMode);
if (restoreContext)
context->restore();
}
bool RenderSVGTransformableContainer::calculateLocalTransform()
{
SVGStyledTransformableElement* element = static_cast<SVGStyledTransformableElement*>(node());
bool needsUpdate = m_needsTransformUpdate;
if (needsUpdate) {
m_localTransform = element->animatedLocalTransform();
m_needsTransformUpdate = false;
}
if (!element->hasTagName(SVGNames::gTag) || !static_cast<SVGGElement*>(element)->isShadowTreeContainerElement())
return needsUpdate;
FloatSize translation = static_cast<SVGShadowTreeContainerElement*>(element)->containerTranslation();
if (translation.width() == 0 && translation.height() == 0)
return needsUpdate;
// FIXME: Could optimize this case for use to avoid refetching the animatedLocalTransform() here, if only the containerTranslation() changed.
if (!needsUpdate)
m_localTransform = element->animatedLocalTransform();
m_localTransform.translate(translation.width(), translation.height());
return true;
}