| /* |
| * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann |
| * <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org> |
| * Copyright (C) Research In Motion Limited 2010. All rights reserved. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| */ |
| |
| #include "third_party/blink/renderer/core/svg/svg_pattern_element.h" |
| |
| #include "third_party/blink/renderer/core/css/style_change_reason.h" |
| #include "third_party/blink/renderer/core/dom/element_traversal.h" |
| #include "third_party/blink/renderer/core/layout/svg/layout_svg_resource_pattern.h" |
| #include "third_party/blink/renderer/core/layout/svg/svg_resources_cache.h" |
| #include "third_party/blink/renderer/core/svg/pattern_attributes.h" |
| #include "third_party/blink/renderer/core/svg/svg_resource.h" |
| #include "third_party/blink/renderer/core/svg/svg_tree_scope_resources.h" |
| #include "third_party/blink/renderer/platform/transforms/affine_transform.h" |
| |
| namespace blink { |
| |
| inline SVGPatternElement::SVGPatternElement(Document& document) |
| : SVGElement(svg_names::kPatternTag, document), |
| SVGURIReference(this), |
| SVGTests(this), |
| SVGFitToViewBox(this), |
| x_(SVGAnimatedLength::Create(this, |
| svg_names::kXAttr, |
| SVGLengthMode::kWidth, |
| SVGLength::Initial::kUnitlessZero)), |
| y_(SVGAnimatedLength::Create(this, |
| svg_names::kYAttr, |
| SVGLengthMode::kHeight, |
| SVGLength::Initial::kUnitlessZero)), |
| width_(SVGAnimatedLength::Create(this, |
| svg_names::kWidthAttr, |
| SVGLengthMode::kWidth, |
| SVGLength::Initial::kUnitlessZero)), |
| height_(SVGAnimatedLength::Create(this, |
| svg_names::kHeightAttr, |
| SVGLengthMode::kHeight, |
| SVGLength::Initial::kUnitlessZero)), |
| pattern_transform_( |
| SVGAnimatedTransformList::Create(this, |
| svg_names::kPatternTransformAttr, |
| CSSPropertyID::kTransform)), |
| pattern_units_(SVGAnimatedEnumeration<SVGUnitTypes::SVGUnitType>::Create( |
| this, |
| svg_names::kPatternUnitsAttr, |
| SVGUnitTypes::kSvgUnitTypeObjectboundingbox)), |
| pattern_content_units_( |
| SVGAnimatedEnumeration<SVGUnitTypes::SVGUnitType>::Create( |
| this, |
| svg_names::kPatternContentUnitsAttr, |
| SVGUnitTypes::kSvgUnitTypeUserspaceonuse)) { |
| AddToPropertyMap(x_); |
| AddToPropertyMap(y_); |
| AddToPropertyMap(width_); |
| AddToPropertyMap(height_); |
| AddToPropertyMap(pattern_transform_); |
| AddToPropertyMap(pattern_units_); |
| AddToPropertyMap(pattern_content_units_); |
| } |
| |
| void SVGPatternElement::Trace(blink::Visitor* visitor) { |
| visitor->Trace(x_); |
| visitor->Trace(y_); |
| visitor->Trace(width_); |
| visitor->Trace(height_); |
| visitor->Trace(pattern_transform_); |
| visitor->Trace(pattern_units_); |
| visitor->Trace(pattern_content_units_); |
| visitor->Trace(resource_); |
| SVGElement::Trace(visitor); |
| SVGURIReference::Trace(visitor); |
| SVGTests::Trace(visitor); |
| SVGFitToViewBox::Trace(visitor); |
| } |
| |
| DEFINE_NODE_FACTORY(SVGPatternElement) |
| |
| void SVGPatternElement::BuildPendingResource() { |
| ClearResourceReferences(); |
| if (!isConnected()) |
| return; |
| TreeScope& tree_scope = GetTreeScope(); |
| SVGTreeScopeResources& tree_scope_resources = |
| tree_scope.EnsureSVGTreeScopedResources(); |
| resource_ = tree_scope_resources.ResourceForId( |
| FragmentIdentifierFromIRIString(HrefString(), tree_scope)); |
| if (resource_) |
| resource_->AddClient(EnsureSVGResourceClient()); |
| |
| InvalidatePattern(layout_invalidation_reason::kSvgResourceInvalidated); |
| if (auto* layout_object = GetLayoutObject()) |
| SVGResourcesCache::ResourceReferenceChanged(*layout_object); |
| } |
| |
| void SVGPatternElement::ClearResourceReferences() { |
| if (!resource_) |
| return; |
| resource_->RemoveClient(*GetSVGResourceClient()); |
| resource_ = nullptr; |
| } |
| |
| void SVGPatternElement::CollectStyleForPresentationAttribute( |
| const QualifiedName& name, |
| const AtomicString& value, |
| MutableCSSPropertyValueSet* style) { |
| if (name == svg_names::kPatternTransformAttr) { |
| AddPropertyToPresentationAttributeStyle( |
| style, CSSPropertyID::kTransform, |
| *pattern_transform_->CurrentValue()->CssValue()); |
| return; |
| } |
| SVGElement::CollectStyleForPresentationAttribute(name, value, style); |
| } |
| |
| void SVGPatternElement::SvgAttributeChanged(const QualifiedName& attr_name) { |
| bool is_length_attr = |
| attr_name == svg_names::kXAttr || attr_name == svg_names::kYAttr || |
| attr_name == svg_names::kWidthAttr || attr_name == svg_names::kHeightAttr; |
| |
| if (attr_name == svg_names::kPatternTransformAttr) { |
| InvalidateSVGPresentationAttributeStyle(); |
| SetNeedsStyleRecalc(kLocalStyleChange, |
| StyleChangeReasonForTracing::FromAttribute(attr_name)); |
| } |
| |
| if (is_length_attr || attr_name == svg_names::kPatternUnitsAttr || |
| attr_name == svg_names::kPatternContentUnitsAttr || |
| attr_name == svg_names::kPatternTransformAttr || |
| SVGFitToViewBox::IsKnownAttribute(attr_name) || |
| SVGTests::IsKnownAttribute(attr_name)) { |
| SVGElement::InvalidationGuard invalidation_guard(this); |
| |
| if (is_length_attr) |
| UpdateRelativeLengthsInformation(); |
| |
| InvalidatePattern(layout_invalidation_reason::kAttributeChanged); |
| return; |
| } |
| |
| if (SVGURIReference::IsKnownAttribute(attr_name)) { |
| SVGElement::InvalidationGuard invalidation_guard(this); |
| BuildPendingResource(); |
| return; |
| } |
| |
| SVGElement::SvgAttributeChanged(attr_name); |
| } |
| |
| Node::InsertionNotificationRequest SVGPatternElement::InsertedInto( |
| ContainerNode& root_parent) { |
| SVGElement::InsertedInto(root_parent); |
| if (root_parent.isConnected()) |
| BuildPendingResource(); |
| return kInsertionDone; |
| } |
| |
| void SVGPatternElement::RemovedFrom(ContainerNode& root_parent) { |
| SVGElement::RemovedFrom(root_parent); |
| if (root_parent.isConnected()) |
| ClearResourceReferences(); |
| } |
| |
| void SVGPatternElement::ChildrenChanged(const ChildrenChange& change) { |
| SVGElement::ChildrenChanged(change); |
| |
| if (change.by_parser) |
| return; |
| |
| InvalidatePattern(layout_invalidation_reason::kChildChanged); |
| } |
| |
| void SVGPatternElement::InvalidatePattern( |
| LayoutInvalidationReasonForTracing reason) { |
| if (auto* layout_object = ToLayoutSVGResourceContainer(GetLayoutObject())) |
| layout_object->InvalidateCacheAndMarkForLayout(reason); |
| } |
| |
| LayoutObject* SVGPatternElement::CreateLayoutObject(const ComputedStyle&, |
| LegacyLayout) { |
| return new LayoutSVGResourcePattern(this); |
| } |
| |
| static void SetPatternAttributes(const SVGPatternElement& element, |
| PatternAttributes& attributes) { |
| element.SynchronizeAnimatedSVGAttribute(AnyQName()); |
| |
| if (!attributes.HasX() && element.x()->IsSpecified()) |
| attributes.SetX(element.x()->CurrentValue()); |
| |
| if (!attributes.HasY() && element.y()->IsSpecified()) |
| attributes.SetY(element.y()->CurrentValue()); |
| |
| if (!attributes.HasWidth() && element.width()->IsSpecified()) |
| attributes.SetWidth(element.width()->CurrentValue()); |
| |
| if (!attributes.HasHeight() && element.height()->IsSpecified()) |
| attributes.SetHeight(element.height()->CurrentValue()); |
| |
| if (!attributes.HasViewBox() && element.HasValidViewBox()) |
| attributes.SetViewBox(element.viewBox()->CurrentValue()->Value()); |
| |
| if (!attributes.HasPreserveAspectRatio() && |
| element.preserveAspectRatio()->IsSpecified()) { |
| attributes.SetPreserveAspectRatio( |
| element.preserveAspectRatio()->CurrentValue()); |
| } |
| |
| if (!attributes.HasPatternUnits() && element.patternUnits()->IsSpecified()) { |
| attributes.SetPatternUnits( |
| element.patternUnits()->CurrentValue()->EnumValue()); |
| } |
| |
| if (!attributes.HasPatternContentUnits() && |
| element.patternContentUnits()->IsSpecified()) { |
| attributes.SetPatternContentUnits( |
| element.patternContentUnits()->CurrentValue()->EnumValue()); |
| } |
| |
| if (!attributes.HasPatternTransform() && |
| element.HasTransform(SVGElement::kExcludeMotionTransform)) { |
| attributes.SetPatternTransform( |
| element.CalculateTransform(SVGElement::kExcludeMotionTransform)); |
| } |
| |
| if (!attributes.HasPatternContentElement() && |
| ElementTraversal::FirstWithin(element)) |
| attributes.SetPatternContentElement(&element); |
| } |
| |
| const SVGPatternElement* SVGPatternElement::ReferencedElement() const { |
| return ToSVGPatternElementOrNull(resource_ ? resource_->Target() : nullptr); |
| } |
| |
| void SVGPatternElement::CollectPatternAttributes( |
| PatternAttributes& attributes) const { |
| HeapHashSet<Member<const SVGPatternElement>> processed_patterns; |
| const SVGPatternElement* current = this; |
| |
| while (true) { |
| SetPatternAttributes(*current, attributes); |
| processed_patterns.insert(current); |
| |
| // If (xlink:)href links to another SVGPatternElement, allow attributes |
| // from that element to override values this pattern didn't set. |
| current = current->ReferencedElement(); |
| |
| // Only consider attached SVG pattern elements. |
| if (!current || !current->GetLayoutObject()) |
| break; |
| // Cycle detection |
| if (processed_patterns.Contains(current)) |
| break; |
| } |
| } |
| |
| AffineTransform SVGPatternElement::LocalCoordinateSpaceTransform( |
| CTMScope) const { |
| return CalculateTransform(SVGElement::kExcludeMotionTransform); |
| } |
| |
| bool SVGPatternElement::SelfHasRelativeLengths() const { |
| return x_->CurrentValue()->IsRelative() || y_->CurrentValue()->IsRelative() || |
| width_->CurrentValue()->IsRelative() || |
| height_->CurrentValue()->IsRelative(); |
| } |
| |
| } // namespace blink |
