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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/svg/SVGFEImageElement.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/svg/SVGFEImageElement.cpp')
-rw-r--r--dom/svg/SVGFEImageElement.cpp378
1 files changed, 378 insertions, 0 deletions
diff --git a/dom/svg/SVGFEImageElement.cpp b/dom/svg/SVGFEImageElement.cpp
new file mode 100644
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+++ b/dom/svg/SVGFEImageElement.cpp
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozilla/dom/SVGFEImageElement.h"
+
+#include "mozilla/EventStates.h"
+#include "mozilla/dom/SVGFEImageElementBinding.h"
+#include "mozilla/dom/SVGFilterElement.h"
+#include "mozilla/gfx/2D.h"
+#include "mozilla/RefPtr.h"
+#include "nsContentUtils.h"
+#include "nsLayoutUtils.h"
+#include "nsSVGUtils.h"
+#include "nsNetUtil.h"
+#include "imgIContainer.h"
+#include "gfx2DGlue.h"
+
+NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT(FEImage)
+
+using namespace mozilla::gfx;
+
+namespace mozilla {
+namespace dom {
+
+JSObject*
+SVGFEImageElement::WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto)
+{
+ return SVGFEImageElementBinding::Wrap(aCx, this, aGivenProto);
+}
+
+nsSVGElement::StringInfo SVGFEImageElement::sStringInfo[3] =
+{
+ { &nsGkAtoms::result, kNameSpaceID_None, true },
+ { &nsGkAtoms::href, kNameSpaceID_None, true },
+ { &nsGkAtoms::href, kNameSpaceID_XLink, true }
+};
+
+//----------------------------------------------------------------------
+// nsISupports methods
+
+NS_IMPL_ISUPPORTS_INHERITED(SVGFEImageElement, SVGFEImageElementBase,
+ nsIDOMNode, nsIDOMElement, nsIDOMSVGElement,
+ imgINotificationObserver, nsIImageLoadingContent,
+ imgIOnloadBlocker)
+
+//----------------------------------------------------------------------
+// Implementation
+
+SVGFEImageElement::SVGFEImageElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
+ : SVGFEImageElementBase(aNodeInfo)
+{
+ // We start out broken
+ AddStatesSilently(NS_EVENT_STATE_BROKEN);
+}
+
+SVGFEImageElement::~SVGFEImageElement()
+{
+ DestroyImageLoadingContent();
+}
+
+//----------------------------------------------------------------------
+
+nsresult
+SVGFEImageElement::LoadSVGImage(bool aForce, bool aNotify)
+{
+ // resolve href attribute
+ nsCOMPtr<nsIURI> baseURI = GetBaseURI();
+
+ nsAutoString href;
+ if (mStringAttributes[HREF].IsExplicitlySet()) {
+ mStringAttributes[HREF].GetAnimValue(href, this);
+ } else {
+ mStringAttributes[XLINK_HREF].GetAnimValue(href, this);
+ }
+ href.Trim(" \t\n\r");
+
+ if (baseURI && !href.IsEmpty())
+ NS_MakeAbsoluteURI(href, href, baseURI);
+
+ // Make sure we don't get in a recursive death-spiral
+ nsIDocument* doc = OwnerDoc();
+ nsCOMPtr<nsIURI> hrefAsURI;
+ if (NS_SUCCEEDED(StringToURI(href, doc, getter_AddRefs(hrefAsURI)))) {
+ bool isEqual;
+ if (NS_SUCCEEDED(hrefAsURI->Equals(baseURI, &isEqual)) && isEqual) {
+ // Image URI matches our URI exactly! Bail out.
+ return NS_OK;
+ }
+ }
+
+ return LoadImage(href, aForce, aNotify, eImageLoadType_Normal);
+}
+
+//----------------------------------------------------------------------
+// EventTarget methods:
+
+void
+SVGFEImageElement::AsyncEventRunning(AsyncEventDispatcher* aEvent)
+{
+ nsImageLoadingContent::AsyncEventRunning(aEvent);
+}
+
+//----------------------------------------------------------------------
+// nsIContent methods:
+
+NS_IMETHODIMP_(bool)
+SVGFEImageElement::IsAttributeMapped(const nsIAtom* name) const
+{
+ static const MappedAttributeEntry* const map[] = {
+ sGraphicsMap
+ };
+
+ return FindAttributeDependence(name, map) ||
+ SVGFEImageElementBase::IsAttributeMapped(name);
+}
+
+nsresult
+SVGFEImageElement::AfterSetAttr(int32_t aNamespaceID, nsIAtom* aName,
+ const nsAttrValue* aValue, bool aNotify)
+{
+ if (aName == nsGkAtoms::href &&
+ (aNamespaceID == kNameSpaceID_XLink ||
+ aNamespaceID == kNameSpaceID_None)) {
+
+ // If there isn't a frame we still need to load the image in case
+ // the frame is created later e.g. by attaching to a document.
+ // If there is a frame then it should deal with loading as the image
+ // url may be animated.
+ if (!GetPrimaryFrame()) {
+ if (aValue) {
+ LoadSVGImage(true, aNotify);
+ } else {
+ CancelImageRequests(aNotify);
+ }
+ }
+ }
+
+ return SVGFEImageElementBase::AfterSetAttr(aNamespaceID, aName,
+ aValue, aNotify);
+}
+
+void
+SVGFEImageElement::MaybeLoadSVGImage()
+{
+ if ((mStringAttributes[HREF].IsExplicitlySet() ||
+ mStringAttributes[XLINK_HREF].IsExplicitlySet() ) &&
+ (NS_FAILED(LoadSVGImage(false, true)) ||
+ !LoadingEnabled())) {
+ CancelImageRequests(true);
+ }
+}
+
+nsresult
+SVGFEImageElement::BindToTree(nsIDocument* aDocument, nsIContent* aParent,
+ nsIContent* aBindingParent,
+ bool aCompileEventHandlers)
+{
+ nsresult rv = SVGFEImageElementBase::BindToTree(aDocument, aParent,
+ aBindingParent,
+ aCompileEventHandlers);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ nsImageLoadingContent::BindToTree(aDocument, aParent, aBindingParent,
+ aCompileEventHandlers);
+
+ if (mStringAttributes[HREF].IsExplicitlySet() ||
+ mStringAttributes[XLINK_HREF].IsExplicitlySet()) {
+ // FIXME: Bug 660963 it would be nice if we could just have
+ // ClearBrokenState update our state and do it fast...
+ ClearBrokenState();
+ RemoveStatesSilently(NS_EVENT_STATE_BROKEN);
+ nsContentUtils::AddScriptRunner(
+ NewRunnableMethod(this, &SVGFEImageElement::MaybeLoadSVGImage));
+ }
+
+ return rv;
+}
+
+void
+SVGFEImageElement::UnbindFromTree(bool aDeep, bool aNullParent)
+{
+ nsImageLoadingContent::UnbindFromTree(aDeep, aNullParent);
+ SVGFEImageElementBase::UnbindFromTree(aDeep, aNullParent);
+}
+
+EventStates
+SVGFEImageElement::IntrinsicState() const
+{
+ return SVGFEImageElementBase::IntrinsicState() |
+ nsImageLoadingContent::ImageState();
+}
+
+//----------------------------------------------------------------------
+// nsIDOMNode methods
+
+NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGFEImageElement)
+
+already_AddRefed<SVGAnimatedString>
+SVGFEImageElement::Href()
+{
+ return mStringAttributes[HREF].IsExplicitlySet()
+ ? mStringAttributes[HREF].ToDOMAnimatedString(this)
+ : mStringAttributes[XLINK_HREF].ToDOMAnimatedString(this);
+}
+
+//----------------------------------------------------------------------
+// nsIDOMSVGFEImageElement methods
+
+FilterPrimitiveDescription
+SVGFEImageElement::GetPrimitiveDescription(nsSVGFilterInstance* aInstance,
+ const IntRect& aFilterSubregion,
+ const nsTArray<bool>& aInputsAreTainted,
+ nsTArray<RefPtr<SourceSurface>>& aInputImages)
+{
+ nsIFrame* frame = GetPrimaryFrame();
+ if (!frame) {
+ return FilterPrimitiveDescription(PrimitiveType::Empty);
+ }
+
+ nsCOMPtr<imgIRequest> currentRequest;
+ GetRequest(nsIImageLoadingContent::CURRENT_REQUEST,
+ getter_AddRefs(currentRequest));
+
+ nsCOMPtr<imgIContainer> imageContainer;
+ if (currentRequest) {
+ currentRequest->GetImage(getter_AddRefs(imageContainer));
+ }
+
+ RefPtr<SourceSurface> image;
+ if (imageContainer) {
+ image = imageContainer->GetFrame(imgIContainer::FRAME_CURRENT,
+ imgIContainer::FLAG_SYNC_DECODE);
+ }
+
+ if (!image) {
+ return FilterPrimitiveDescription(PrimitiveType::Empty);
+ }
+
+ IntSize nativeSize;
+ imageContainer->GetWidth(&nativeSize.width);
+ imageContainer->GetHeight(&nativeSize.height);
+
+ Matrix viewBoxTM =
+ SVGContentUtils::GetViewBoxTransform(aFilterSubregion.width, aFilterSubregion.height,
+ 0, 0, nativeSize.width, nativeSize.height,
+ mPreserveAspectRatio);
+ Matrix TM = viewBoxTM;
+ TM.PostTranslate(aFilterSubregion.x, aFilterSubregion.y);
+
+ SamplingFilter samplingFilter = nsLayoutUtils::GetSamplingFilterForFrame(frame);
+
+ FilterPrimitiveDescription descr(PrimitiveType::Image);
+ descr.Attributes().Set(eImageFilter, (uint32_t)samplingFilter);
+ descr.Attributes().Set(eImageTransform, TM);
+
+ // Append the image to aInputImages and store its index in the description.
+ size_t imageIndex = aInputImages.Length();
+ aInputImages.AppendElement(image);
+ descr.Attributes().Set(eImageInputIndex, (uint32_t)imageIndex);
+
+ return descr;
+}
+
+bool
+SVGFEImageElement::AttributeAffectsRendering(int32_t aNameSpaceID,
+ nsIAtom* aAttribute) const
+{
+ // nsGkAtoms::href is deliberately omitted as the frame has special
+ // handling to load the image
+ return SVGFEImageElementBase::AttributeAffectsRendering(aNameSpaceID, aAttribute) ||
+ (aNameSpaceID == kNameSpaceID_None &&
+ aAttribute == nsGkAtoms::preserveAspectRatio);
+}
+
+bool
+SVGFEImageElement::OutputIsTainted(const nsTArray<bool>& aInputsAreTainted,
+ nsIPrincipal* aReferencePrincipal)
+{
+ nsresult rv;
+ nsCOMPtr<imgIRequest> currentRequest;
+ GetRequest(nsIImageLoadingContent::CURRENT_REQUEST,
+ getter_AddRefs(currentRequest));
+
+ if (!currentRequest) {
+ return false;
+ }
+
+ uint32_t status;
+ currentRequest->GetImageStatus(&status);
+ if ((status & imgIRequest::STATUS_LOAD_COMPLETE) == 0) {
+ // The load has not completed yet.
+ return false;
+ }
+
+ nsCOMPtr<nsIPrincipal> principal;
+ rv = currentRequest->GetImagePrincipal(getter_AddRefs(principal));
+ if (NS_FAILED(rv) || !principal) {
+ return true;
+ }
+
+ int32_t corsmode;
+ if (NS_SUCCEEDED(currentRequest->GetCORSMode(&corsmode)) &&
+ corsmode != imgIRequest::CORS_NONE) {
+ // If CORS was used to load the image, the page is allowed to read from it.
+ return false;
+ }
+
+ if (aReferencePrincipal->Subsumes(principal)) {
+ // The page is allowed to read from the image.
+ return false;
+ }
+
+ return true;
+}
+
+//----------------------------------------------------------------------
+// nsSVGElement methods
+
+already_AddRefed<DOMSVGAnimatedPreserveAspectRatio>
+SVGFEImageElement::PreserveAspectRatio()
+{
+ return mPreserveAspectRatio.ToDOMAnimatedPreserveAspectRatio(this);
+}
+
+SVGAnimatedPreserveAspectRatio *
+SVGFEImageElement::GetPreserveAspectRatio()
+{
+ return &mPreserveAspectRatio;
+}
+
+nsSVGElement::StringAttributesInfo
+SVGFEImageElement::GetStringInfo()
+{
+ return StringAttributesInfo(mStringAttributes, sStringInfo,
+ ArrayLength(sStringInfo));
+}
+
+//----------------------------------------------------------------------
+// imgINotificationObserver methods
+
+NS_IMETHODIMP
+SVGFEImageElement::Notify(imgIRequest* aRequest, int32_t aType, const nsIntRect* aData)
+{
+ nsresult rv = nsImageLoadingContent::Notify(aRequest, aType, aData);
+
+ if (aType == imgINotificationObserver::SIZE_AVAILABLE) {
+ // Request a decode
+ nsCOMPtr<imgIContainer> container;
+ aRequest->GetImage(getter_AddRefs(container));
+ MOZ_ASSERT(container, "who sent the notification then?");
+ container->StartDecoding();
+ }
+
+ if (aType == imgINotificationObserver::LOAD_COMPLETE ||
+ aType == imgINotificationObserver::FRAME_UPDATE ||
+ aType == imgINotificationObserver::SIZE_AVAILABLE) {
+ Invalidate();
+ }
+
+ return rv;
+}
+
+//----------------------------------------------------------------------
+// helper methods
+
+void
+SVGFEImageElement::Invalidate()
+{
+ if (GetParent() && GetParent()->IsSVGElement(nsGkAtoms::filter)) {
+ static_cast<SVGFilterElement*>(GetParent())->Invalidate();
+ }
+}
+
+} // namespace dom
+} // namespace mozilla