dom/svg/SVGFEImageElement.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef DOM_SVG_SVGFEIMAGEELEMENT_H_
   8 #define DOM_SVG_SVGFEIMAGEELEMENT_H_
   9
  10 #include "mozilla/dom/SVGFilters.h"
  11 #include "SVGAnimatedPreserveAspectRatio.h"
  12
  13 nsresult NS_NewSVGFEImageElement(
  14     nsIContent** aResult, already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
  15
  16 namespace mozilla {
  17 class SVGFEImageFrame;
  18
  19 namespace dom {
  20
  21 using SVGFEImageElementBase = SVGFilterPrimitiveElement;
  22
  23 class SVGFEImageElement final : public SVGFEImageElementBase,
  24                                 public nsImageLoadingContent {
  25   friend class mozilla::SVGFEImageFrame;
  26
  27  protected:
  28   friend nsresult(::NS_NewSVGFEImageElement(
  29       nsIContent** aResult,
  30       already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo));
  31   explicit SVGFEImageElement(
  32       already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo);
  33   virtual ~SVGFEImageElement();
  34   JSObject* WrapNode(JSContext* aCx,
  35                      JS::Handle<JSObject*> aGivenProto) override;
  36
  37  public:
  38   bool SubregionIsUnionOfRegions() override { return false; }
  39
  40   // interfaces:
  41   NS_DECL_ISUPPORTS_INHERITED
  42
  43   // EventTarget
  44   void AsyncEventRunning(AsyncEventDispatcher* aEvent) override;
  45
  46   FilterPrimitiveDescription GetPrimitiveDescription(
  47       SVGFilterInstance* aInstance, const IntRect& aFilterSubregion,
  48       const nsTArray<bool>& aInputsAreTainted,
  49       nsTArray<RefPtr<SourceSurface>>& aInputImages) override;
  50   bool AttributeAffectsRendering(int32_t aNameSpaceID,
  51                                  nsAtom* aAttribute) const override;
  52   SVGAnimatedString& GetResultImageName() override {
  53     return mStringAttributes[RESULT];
  54   }
  55
  56   // nsImageLoadingContent
  57   CORSMode GetCORSMode() override;
  58
  59   bool OutputIsTainted(const nsTArray<bool>& aInputsAreTainted,
  60                        nsIPrincipal* aReferencePrincipal) override;
  61
  62   // nsIContent
  63   nsresult Clone(dom::NodeInfo*, nsINode** aResult) const override;
  64
  65   bool ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
  66                       const nsAString& aValue,
  67                       nsIPrincipal* aMaybeScriptedPrincipal,
  68                       nsAttrValue& aResult) override;
  69   void AfterSetAttr(int32_t aNamespaceID, nsAtom* aName,
  70                     const nsAttrValue* aValue, const nsAttrValue* aOldValue,
  71                     nsIPrincipal* aSubjectPrincipal, bool aNotify) override;
  72   nsresult BindToTree(BindContext&, nsINode& aParent) override;
  73   void UnbindFromTree(UnbindContext&) override;
  74   void DestroyContent() override;
  75
  76   NS_DECL_IMGINOTIFICATIONOBSERVER
  77
  78   // Override for nsIImageLoadingContent.
  79   NS_IMETHOD_(void) FrameCreated(nsIFrame* aFrame) override;
  80
  81   void MaybeLoadSVGImage();
  82
  83   // WebIDL
  84   already_AddRefed<DOMSVGAnimatedString> Href();
  85   already_AddRefed<DOMSVGAnimatedPreserveAspectRatio> PreserveAspectRatio();
  86   void GetCrossOrigin(nsAString& aCrossOrigin) {
  87     // Null for both missing and invalid defaults is ok, since we
  88     // always parse to an enum value, so we don't need an invalid
  89     // default, and we _want_ the missing default to be null.
  90     GetEnumAttr(nsGkAtoms::crossorigin, nullptr, aCrossOrigin);
  91   }
  92   void SetCrossOrigin(const nsAString& aCrossOrigin, ErrorResult& aError) {
  93     SetOrRemoveNullableStringAttr(nsGkAtoms::crossorigin, aCrossOrigin, aError);
  94   }
  95
  96  private:
  97   nsresult LoadSVGImage(bool aForce, bool aNotify);
  98   bool ShouldLoadImage() const;
  99
 100  protected:
 101   bool ProducesSRGB() override { return true; }
 102
 103   SVGAnimatedPreserveAspectRatio* GetAnimatedPreserveAspectRatio() override;
 104   StringAttributesInfo GetStringInfo() override;
 105
 106   // Override for nsImageLoadingContent.
 107   nsIContent* AsContent() override { return this; }
 108
 109   enum { RESULT, HREF, XLINK_HREF };
 110   SVGAnimatedString mStringAttributes[3];
 111   static StringInfo sStringInfo[3];
 112
 113   SVGAnimatedPreserveAspectRatio mPreserveAspectRatio;
 114   uint16_t mImageAnimationMode;
 115 };
 116
 117 }  // namespace dom
 118 }  // namespace mozilla
 119
 120 #endif  // DOM_SVG_SVGFEIMAGEELEMENT_H_