Add m-esr52 at 52.6.0

1 files changed, 378 insertions, 0 deletions

diff --git a/dom/svg/SVGFEImageElement.cpp b/dom/svg/SVGFEImageElement.cpp
new file mode 100644
index 000000000..f235d5ccb
--- /dev/null
+++ b/dom/svg/SVGFEImageElement.cpp
@@ -0,0 +1,378 @@
+/* -*- 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