| /* |
| * Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005 Rob Buis <buis@kde.org> |
| * Copyright (C) 2010 Dirk Schulze <krit@webkit.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_fe_image_element.h" |
| |
| #include "third_party/blink/renderer/core/dom/document.h" |
| #include "third_party/blink/renderer/core/dom/id_target_observer.h" |
| #include "third_party/blink/renderer/core/loader/resource/image_resource_content.h" |
| #include "third_party/blink/renderer/core/svg/graphics/filters/svg_fe_image.h" |
| #include "third_party/blink/renderer/core/svg/svg_preserve_aspect_ratio.h" |
| #include "third_party/blink/renderer/core/svg_names.h" |
| #include "third_party/blink/renderer/platform/graphics/image.h" |
| #include "third_party/blink/renderer/platform/heap/heap.h" |
| #include "third_party/blink/renderer/platform/loader/fetch/fetch_parameters.h" |
| #include "third_party/blink/renderer/platform/loader/fetch/resource_fetcher.h" |
| #include "third_party/blink/renderer/platform/loader/fetch/resource_loader_options.h" |
| |
| namespace blink { |
| |
| SVGFEImageElement::SVGFEImageElement(Document& document) |
| : SVGFilterPrimitiveStandardAttributes(svg_names::kFEImageTag, document), |
| SVGURIReference(this), |
| preserve_aspect_ratio_( |
| MakeGarbageCollected<SVGAnimatedPreserveAspectRatio>( |
| this, |
| svg_names::kPreserveAspectRatioAttr)) { |
| AddToPropertyMap(preserve_aspect_ratio_); |
| } |
| |
| DEFINE_NODE_FACTORY(SVGFEImageElement) |
| |
| SVGFEImageElement::~SVGFEImageElement() { |
| ClearImageResource(); |
| } |
| |
| void SVGFEImageElement::Trace(blink::Visitor* visitor) { |
| visitor->Trace(preserve_aspect_ratio_); |
| visitor->Trace(cached_image_); |
| visitor->Trace(target_id_observer_); |
| SVGFilterPrimitiveStandardAttributes::Trace(visitor); |
| SVGURIReference::Trace(visitor); |
| } |
| |
| bool SVGFEImageElement::CurrentFrameHasSingleSecurityOrigin() const { |
| if (cached_image_) { |
| if (Image* image = cached_image_->GetImage()) |
| return image->CurrentFrameHasSingleSecurityOrigin(); |
| } |
| return true; |
| } |
| |
| void SVGFEImageElement::ClearResourceReferences() { |
| ClearImageResource(); |
| UnobserveTarget(target_id_observer_); |
| RemoveAllOutgoingReferences(); |
| } |
| |
| void SVGFEImageElement::FetchImageResource() { |
| ResourceLoaderOptions options; |
| options.initiator_info.name = localName(); |
| FetchParameters params( |
| ResourceRequest(GetDocument().CompleteURL(HrefString())), options); |
| cached_image_ = ImageResourceContent::Fetch(params, GetDocument().Fetcher()); |
| if (cached_image_) |
| cached_image_->AddObserver(this); |
| } |
| |
| void SVGFEImageElement::ClearImageResource() { |
| if (!cached_image_) |
| return; |
| cached_image_->RemoveObserver(this); |
| cached_image_ = nullptr; |
| } |
| |
| void SVGFEImageElement::BuildPendingResource() { |
| ClearResourceReferences(); |
| if (!isConnected()) |
| return; |
| |
| Element* target = ObserveTarget(target_id_observer_, *this); |
| if (!target) { |
| if (!SVGURLReferenceResolver(HrefString(), GetDocument()).IsLocal()) |
| FetchImageResource(); |
| } else if (target->IsSVGElement()) { |
| // Register us with the target in the dependencies map. Any change of |
| // hrefElement that leads to relayout/repainting now informs us, so we can |
| // react to it. |
| AddReferenceTo(ToSVGElement(target)); |
| } |
| |
| Invalidate(); |
| } |
| |
| void SVGFEImageElement::SvgAttributeChanged(const QualifiedName& attr_name) { |
| if (attr_name == svg_names::kPreserveAspectRatioAttr) { |
| SVGElement::InvalidationGuard invalidation_guard(this); |
| Invalidate(); |
| return; |
| } |
| |
| if (SVGURIReference::IsKnownAttribute(attr_name)) { |
| SVGElement::InvalidationGuard invalidation_guard(this); |
| BuildPendingResource(); |
| return; |
| } |
| |
| SVGFilterPrimitiveStandardAttributes::SvgAttributeChanged(attr_name); |
| } |
| |
| Node::InsertionNotificationRequest SVGFEImageElement::InsertedInto( |
| ContainerNode& root_parent) { |
| SVGFilterPrimitiveStandardAttributes::InsertedInto(root_parent); |
| BuildPendingResource(); |
| return kInsertionDone; |
| } |
| |
| void SVGFEImageElement::RemovedFrom(ContainerNode& root_parent) { |
| SVGFilterPrimitiveStandardAttributes::RemovedFrom(root_parent); |
| if (root_parent.isConnected()) |
| ClearResourceReferences(); |
| } |
| |
| void SVGFEImageElement::ImageNotifyFinished(ImageResourceContent*) { |
| if (!isConnected()) |
| return; |
| |
| Element* parent = parentElement(); |
| if (!parent || !IsSVGFilterElement(parent) || !parent->GetLayoutObject()) |
| return; |
| |
| if (LayoutObject* layout_object = GetLayoutObject()) |
| MarkForLayoutAndParentResourceInvalidation(*layout_object); |
| } |
| |
| FilterEffect* SVGFEImageElement::Build(SVGFilterBuilder*, Filter* filter) { |
| if (cached_image_) { |
| // Don't use the broken image icon on image loading errors. |
| scoped_refptr<Image> image = |
| cached_image_->ErrorOccurred() ? nullptr : cached_image_->GetImage(); |
| return MakeGarbageCollected<FEImage>( |
| filter, image, preserve_aspect_ratio_->CurrentValue()); |
| } |
| |
| return MakeGarbageCollected<FEImage>(filter, GetTreeScope(), HrefString(), |
| preserve_aspect_ratio_->CurrentValue()); |
| } |
| |
| bool SVGFEImageElement::TaintsOrigin() const { |
| // We always consider a 'href' that references a local element as tainting. |
| return !cached_image_ || !cached_image_->IsAccessAllowed(); |
| } |
| |
| } // namespace blink |