| /* |
| * 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 "core/svg/SVGPatternElement.h" |
| |
| #include "core/css/StyleChangeReason.h" |
| #include "core/dom/ElementTraversal.h" |
| #include "core/layout/svg/LayoutSVGResourcePattern.h" |
| #include "core/svg/PatternAttributes.h" |
| #include "platform/transforms/AffineTransform.h" |
| |
| namespace blink { |
| |
| inline SVGPatternElement::SVGPatternElement(Document& document) |
| : SVGElement(SVGNames::patternTag, document), |
| SVGURIReference(this), |
| SVGTests(this), |
| SVGFitToViewBox(this), |
| x_(SVGAnimatedLength::Create(this, |
| SVGNames::xAttr, |
| SVGLength::Create(SVGLengthMode::kWidth))), |
| y_(SVGAnimatedLength::Create(this, |
| SVGNames::yAttr, |
| SVGLength::Create(SVGLengthMode::kHeight))), |
| width_( |
| SVGAnimatedLength::Create(this, |
| SVGNames::widthAttr, |
| SVGLength::Create(SVGLengthMode::kWidth))), |
| height_( |
| SVGAnimatedLength::Create(this, |
| SVGNames::heightAttr, |
| SVGLength::Create(SVGLengthMode::kHeight))), |
| pattern_transform_( |
| SVGAnimatedTransformList::Create(this, |
| SVGNames::patternTransformAttr, |
| CSSPropertyTransform)), |
| pattern_units_(SVGAnimatedEnumeration<SVGUnitTypes::SVGUnitType>::Create( |
| this, |
| SVGNames::patternUnitsAttr, |
| SVGUnitTypes::kSvgUnitTypeObjectboundingbox)), |
| pattern_content_units_( |
| SVGAnimatedEnumeration<SVGUnitTypes::SVGUnitType>::Create( |
| this, |
| SVGNames::patternContentUnitsAttr, |
| 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_); |
| SVGElement::Trace(visitor); |
| SVGURIReference::Trace(visitor); |
| SVGTests::Trace(visitor); |
| SVGFitToViewBox::Trace(visitor); |
| } |
| |
| DEFINE_NODE_FACTORY(SVGPatternElement) |
| |
| void SVGPatternElement::CollectStyleForPresentationAttribute( |
| const QualifiedName& name, |
| const AtomicString& value, |
| MutableCSSPropertyValueSet* style) { |
| if (name == SVGNames::patternTransformAttr) { |
| AddPropertyToPresentationAttributeStyle( |
| style, CSSPropertyTransform, |
| pattern_transform_->CurrentValue()->CssValue()); |
| return; |
| } |
| SVGElement::CollectStyleForPresentationAttribute(name, value, style); |
| } |
| |
| void SVGPatternElement::SvgAttributeChanged(const QualifiedName& attr_name) { |
| bool is_length_attr = |
| attr_name == SVGNames::xAttr || attr_name == SVGNames::yAttr || |
| attr_name == SVGNames::widthAttr || attr_name == SVGNames::heightAttr; |
| |
| if (attr_name == SVGNames::patternTransformAttr) { |
| InvalidateSVGPresentationAttributeStyle(); |
| SetNeedsStyleRecalc(kLocalStyleChange, |
| StyleChangeReasonForTracing::FromAttribute(attr_name)); |
| } |
| |
| if (is_length_attr || attr_name == SVGNames::patternUnitsAttr || |
| attr_name == SVGNames::patternContentUnitsAttr || |
| attr_name == SVGNames::patternTransformAttr || |
| SVGFitToViewBox::IsKnownAttribute(attr_name) || |
| SVGURIReference::IsKnownAttribute(attr_name) || |
| SVGTests::IsKnownAttribute(attr_name)) { |
| SVGElement::InvalidationGuard invalidation_guard(this); |
| |
| if (is_length_attr) |
| UpdateRelativeLengthsInformation(); |
| |
| LayoutSVGResourceContainer* layout_object = |
| ToLayoutSVGResourceContainer(this->GetLayoutObject()); |
| if (layout_object) |
| layout_object->InvalidateCacheAndMarkForLayout(); |
| |
| return; |
| } |
| |
| SVGElement::SvgAttributeChanged(attr_name); |
| } |
| |
| void SVGPatternElement::ChildrenChanged(const ChildrenChange& change) { |
| SVGElement::ChildrenChanged(change); |
| |
| if (change.by_parser) |
| return; |
| |
| if (LayoutObject* object = GetLayoutObject()) |
| object->SetNeedsLayoutAndFullPaintInvalidation( |
| LayoutInvalidationReason::kChildChanged); |
| } |
| |
| LayoutObject* SVGPatternElement::CreateLayoutObject(const ComputedStyle&) { |
| return new LayoutSVGResourcePattern(this); |
| } |
| |
| static void SetPatternAttributes(const SVGPatternElement* element, |
| PatternAttributes& attributes) { |
| 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); |
| } |
| |
| 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); |
| |
| // Respect xlink:href, take attributes from referenced element |
| Node* ref_node = SVGURIReference::TargetElementFromIRIString( |
| current->HrefString(), GetTreeScope()); |
| |
| // Only consider attached SVG pattern elements. |
| if (!IsSVGPatternElement(ref_node) || !ref_node->GetLayoutObject()) |
| break; |
| |
| current = ToSVGPatternElement(ref_node); |
| |
| // 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 |
