| /* |
| * Copyright (C) 2006 Apple Inc. All rights reserved. |
| * Copyright (C) 2008 Nikolas Zimmermann <zimmermann@kde.org> |
| * |
| * 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_foreign_object_element.h" |
| |
| #include "third_party/blink/renderer/core/css/style_change_reason.h" |
| #include "third_party/blink/renderer/core/frame/web_feature.h" |
| #include "third_party/blink/renderer/core/layout/svg/layout_svg_foreign_object.h" |
| #include "third_party/blink/renderer/core/svg/svg_length.h" |
| #include "third_party/blink/renderer/platform/heap/heap.h" |
| #include "third_party/blink/renderer/platform/instrumentation/use_counter.h" |
| #include "third_party/blink/renderer/platform/wtf/assertions.h" |
| |
| namespace blink { |
| |
| SVGForeignObjectElement::SVGForeignObjectElement(Document& document) |
| : SVGGraphicsElement(svg_names::kForeignObjectTag, document), |
| x_(MakeGarbageCollected<SVGAnimatedLength>( |
| this, |
| svg_names::kXAttr, |
| SVGLengthMode::kWidth, |
| SVGLength::Initial::kUnitlessZero, |
| CSSPropertyID::kX)), |
| y_(MakeGarbageCollected<SVGAnimatedLength>( |
| this, |
| svg_names::kYAttr, |
| SVGLengthMode::kHeight, |
| SVGLength::Initial::kUnitlessZero, |
| CSSPropertyID::kY)), |
| width_(MakeGarbageCollected<SVGAnimatedLength>( |
| this, |
| svg_names::kWidthAttr, |
| SVGLengthMode::kWidth, |
| SVGLength::Initial::kUnitlessZero, |
| CSSPropertyID::kWidth)), |
| height_(MakeGarbageCollected<SVGAnimatedLength>( |
| this, |
| svg_names::kHeightAttr, |
| SVGLengthMode::kHeight, |
| SVGLength::Initial::kUnitlessZero, |
| CSSPropertyID::kHeight)) { |
| AddToPropertyMap(x_); |
| AddToPropertyMap(y_); |
| AddToPropertyMap(width_); |
| AddToPropertyMap(height_); |
| |
| UseCounter::Count(document, WebFeature::kSVGForeignObjectElement); |
| } |
| |
| void SVGForeignObjectElement::Trace(blink::Visitor* visitor) { |
| visitor->Trace(x_); |
| visitor->Trace(y_); |
| visitor->Trace(width_); |
| visitor->Trace(height_); |
| SVGGraphicsElement::Trace(visitor); |
| } |
| |
| void SVGForeignObjectElement::CollectStyleForPresentationAttribute( |
| const QualifiedName& name, |
| const AtomicString& value, |
| MutableCSSPropertyValueSet* style) { |
| SVGAnimatedPropertyBase* property = PropertyFromAttribute(name); |
| if (property == width_) { |
| AddPropertyToPresentationAttributeStyle(style, property->CssPropertyId(), |
| width_->CssValue()); |
| } else if (property == height_) { |
| AddPropertyToPresentationAttributeStyle(style, property->CssPropertyId(), |
| height_->CssValue()); |
| } else if (property == x_) { |
| AddPropertyToPresentationAttributeStyle(style, property->CssPropertyId(), |
| x_->CssValue()); |
| } else if (property == y_) { |
| AddPropertyToPresentationAttributeStyle(style, property->CssPropertyId(), |
| y_->CssValue()); |
| } else { |
| SVGGraphicsElement::CollectStyleForPresentationAttribute(name, value, |
| style); |
| } |
| } |
| |
| void SVGForeignObjectElement::SvgAttributeChanged( |
| const QualifiedName& attr_name) { |
| bool is_width_height_attribute = |
| attr_name == svg_names::kWidthAttr || attr_name == svg_names::kHeightAttr; |
| bool is_xy_attribute = |
| attr_name == svg_names::kXAttr || attr_name == svg_names::kYAttr; |
| |
| if (is_xy_attribute || is_width_height_attribute) { |
| SVGElement::InvalidationGuard invalidation_guard(this); |
| |
| InvalidateSVGPresentationAttributeStyle(); |
| SetNeedsStyleRecalc( |
| kLocalStyleChange, |
| is_width_height_attribute |
| ? StyleChangeReasonForTracing::Create( |
| style_change_reason::kSVGContainerSizeChange) |
| : StyleChangeReasonForTracing::FromAttribute(attr_name)); |
| |
| UpdateRelativeLengthsInformation(); |
| if (LayoutObject* layout_object = GetLayoutObject()) |
| MarkForLayoutAndParentResourceInvalidation(*layout_object); |
| |
| return; |
| } |
| |
| SVGGraphicsElement::SvgAttributeChanged(attr_name); |
| } |
| |
| LayoutObject* SVGForeignObjectElement::CreateLayoutObject(const ComputedStyle&, |
| LegacyLayout) { |
| // Suppress foreignObject LayoutObjects in SVG hidden containers. |
| // LayoutSVGHiddenContainers does not allow the subtree to be rendered, but |
| // allow LayoutObject descendants to be created. That will causes crashes in |
| // the layout code if object creation is not inhibited for foreignObject |
| // subtrees (https://crbug.com/1027905). |
| // Note that we currently do not support foreignObject instantiation via |
| // <use>, and attachShadow is not allowed on SVG elements, hence it is safe to |
| // use parentElement() here. |
| for (Element* ancestor = parentElement(); |
| ancestor && ancestor->IsSVGElement(); |
| ancestor = ancestor->parentElement()) { |
| if (ancestor->GetLayoutObject() && |
| ancestor->GetLayoutObject()->IsSVGHiddenContainer()) |
| return nullptr; |
| } |
| return new LayoutSVGForeignObject(this); |
| } |
| |
| bool SVGForeignObjectElement::SelfHasRelativeLengths() const { |
| return x_->CurrentValue()->IsRelative() || y_->CurrentValue()->IsRelative() || |
| width_->CurrentValue()->IsRelative() || |
| height_->CurrentValue()->IsRelative(); |
| } |
| |
| } // namespace blink |