mirror of
https://github.com/classilla/tenfourfox.git
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243 lines
7.9 KiB
C
243 lines
7.9 KiB
C
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef __NS_SVGFILTERSELEMENT_H__
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#define __NS_SVGFILTERSELEMENT_H__
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#include "mozilla/Attributes.h"
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#include "nsImageLoadingContent.h"
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#include "nsSVGLength2.h"
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#include "nsSVGString.h"
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#include "nsSVGElement.h"
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#include "nsSVGNumber2.h"
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#include "nsSVGNumberPair.h"
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#include "FilterSupport.h"
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class nsSVGFilterInstance;
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class nsSVGNumberPair;
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struct nsSVGStringInfo {
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nsSVGStringInfo(const nsSVGString* aString,
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nsSVGElement *aElement) :
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mString(aString), mElement(aElement) {}
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const nsSVGString* mString;
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nsSVGElement* mElement;
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};
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typedef nsSVGElement nsSVGFEBase;
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#define NS_SVG_FE_CID \
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{ 0x60483958, 0xd229, 0x4a77, \
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{ 0x96, 0xb2, 0x62, 0x3e, 0x69, 0x95, 0x1e, 0x0e } }
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/**
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* Base class for filter primitive elements
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* Children of those elements e.g. feMergeNode
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* derive from SVGFEUnstyledElement instead
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*/
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class nsSVGFE : public nsSVGFEBase
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{
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friend class nsSVGFilterInstance;
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protected:
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typedef mozilla::gfx::SourceSurface SourceSurface;
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typedef mozilla::gfx::Size Size;
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typedef mozilla::gfx::IntRect IntRect;
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typedef mozilla::gfx::ColorSpace ColorSpace;
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typedef mozilla::gfx::FilterPrimitiveDescription FilterPrimitiveDescription;
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explicit nsSVGFE(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
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: nsSVGFEBase(aNodeInfo) {}
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virtual ~nsSVGFE() {}
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public:
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typedef mozilla::gfx::AttributeMap AttributeMap;
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ColorSpace
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GetInputColorSpace(int32_t aInputIndex, ColorSpace aUnchangedInputColorSpace) {
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return OperatesOnSRGB(aInputIndex, aUnchangedInputColorSpace == ColorSpace::SRGB) ?
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ColorSpace::SRGB : ColorSpace::LinearRGB;
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}
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// This is only called for filter primitives without inputs. For primitives
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// with inputs, the output color model is the same as of the first input.
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ColorSpace
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GetOutputColorSpace() {
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return ProducesSRGB() ? ColorSpace::SRGB : ColorSpace::LinearRGB;
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}
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// See http://www.w3.org/TR/SVG/filters.html#FilterPrimitiveSubRegion
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virtual bool SubregionIsUnionOfRegions() { return true; }
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_SVG_FE_CID)
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// interfaces:
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NS_DECL_ISUPPORTS_INHERITED
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// nsIContent interface
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NS_IMETHOD_(bool) IsAttributeMapped(const nsIAtom* aAttribute) const override;
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// nsSVGElement interface
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virtual nsresult Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult) const override = 0;
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virtual bool HasValidDimensions() const override;
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bool IsNodeOfType(uint32_t aFlags) const override
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{ return !(aFlags & ~(eCONTENT | eFILTER)); }
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virtual nsSVGString& GetResultImageName() = 0;
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// Return a list of all image names used as sources. Default is to
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// return no sources.
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virtual void GetSourceImageNames(nsTArray<nsSVGStringInfo>& aSources);
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virtual FilterPrimitiveDescription
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GetPrimitiveDescription(nsSVGFilterInstance* aInstance,
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const IntRect& aFilterSubregion,
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const nsTArray<bool>& aInputsAreTainted,
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nsTArray<RefPtr<SourceSurface>>& aInputImages) = 0;
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// returns true if changes to the attribute should cause us to
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// repaint the filter
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virtual bool AttributeAffectsRendering(
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int32_t aNameSpaceID, nsIAtom* aAttribute) const;
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// Return whether this filter primitive has tainted output. A filter's
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// output is tainted if it depends on things that the web page is not
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// allowed to read from, e.g. the source graphic or cross-origin images.
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// aReferencePrincipal is the node principal of the filtered frame's element.
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virtual bool OutputIsTainted(const nsTArray<bool>& aInputsAreTainted,
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nsIPrincipal* aReferencePrincipal);
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static nsIntRect GetMaxRect() {
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// Try to avoid overflow errors dealing with this rect. It will
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// be intersected with some other reasonable-sized rect eventually.
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return nsIntRect(INT32_MIN/2, INT32_MIN/2, INT32_MAX, INT32_MAX);
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}
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operator nsISupports*() { return static_cast<nsIContent*>(this); }
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// WebIDL
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already_AddRefed<mozilla::dom::SVGAnimatedLength> X();
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already_AddRefed<mozilla::dom::SVGAnimatedLength> Y();
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already_AddRefed<mozilla::dom::SVGAnimatedLength> Width();
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already_AddRefed<mozilla::dom::SVGAnimatedLength> Height();
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already_AddRefed<mozilla::dom::SVGAnimatedString> Result();
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protected:
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virtual bool OperatesOnSRGB(int32_t aInputIndex, bool aInputIsAlreadySRGB) {
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return StyleIsSetToSRGB();
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}
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// Only called for filter primitives without inputs.
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virtual bool ProducesSRGB() { return StyleIsSetToSRGB(); }
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bool StyleIsSetToSRGB();
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// nsSVGElement specializations:
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virtual LengthAttributesInfo GetLengthInfo() override;
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Size GetKernelUnitLength(nsSVGFilterInstance* aInstance,
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nsSVGNumberPair *aKernelUnitLength);
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enum { ATTR_X, ATTR_Y, ATTR_WIDTH, ATTR_HEIGHT };
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nsSVGLength2 mLengthAttributes[4];
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static LengthInfo sLengthInfo[4];
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(nsSVGFE, NS_SVG_FE_CID)
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typedef nsSVGElement SVGFEUnstyledElementBase;
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class SVGFEUnstyledElement : public SVGFEUnstyledElementBase
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{
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protected:
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explicit SVGFEUnstyledElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
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: SVGFEUnstyledElementBase(aNodeInfo) {}
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public:
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virtual nsresult Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult) const override = 0;
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// returns true if changes to the attribute should cause us to
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// repaint the filter
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virtual bool AttributeAffectsRendering(
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int32_t aNameSpaceID, nsIAtom* aAttribute) const = 0;
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};
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//------------------------------------------------------------
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typedef nsSVGFE nsSVGFELightingElementBase;
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class nsSVGFELightingElement : public nsSVGFELightingElementBase
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{
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protected:
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explicit nsSVGFELightingElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
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: nsSVGFELightingElementBase(aNodeInfo) {}
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virtual ~nsSVGFELightingElement() {}
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public:
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// interfaces:
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NS_DECL_ISUPPORTS_INHERITED
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virtual bool AttributeAffectsRendering(
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int32_t aNameSpaceID, nsIAtom* aAttribute) const override;
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virtual nsSVGString& GetResultImageName() override { return mStringAttributes[RESULT]; }
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virtual void GetSourceImageNames(nsTArray<nsSVGStringInfo>& aSources) override;
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NS_FORWARD_NSIDOMSVGELEMENT(nsSVGFELightingElementBase::)
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NS_IMETHOD_(bool) IsAttributeMapped(const nsIAtom* aAttribute) const override;
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protected:
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virtual bool OperatesOnSRGB(int32_t aInputIndex,
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bool aInputIsAlreadySRGB) override { return true; }
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virtual NumberAttributesInfo GetNumberInfo() override;
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virtual NumberPairAttributesInfo GetNumberPairInfo() override;
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virtual StringAttributesInfo GetStringInfo() override;
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AttributeMap ComputeLightAttributes(nsSVGFilterInstance* aInstance);
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FilterPrimitiveDescription
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AddLightingAttributes(FilterPrimitiveDescription aDescription,
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nsSVGFilterInstance* aInstance);
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enum { SURFACE_SCALE, DIFFUSE_CONSTANT, SPECULAR_CONSTANT, SPECULAR_EXPONENT };
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nsSVGNumber2 mNumberAttributes[4];
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static NumberInfo sNumberInfo[4];
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enum { KERNEL_UNIT_LENGTH };
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nsSVGNumberPair mNumberPairAttributes[1];
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static NumberPairInfo sNumberPairInfo[1];
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enum { RESULT, IN1 };
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nsSVGString mStringAttributes[2];
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static StringInfo sStringInfo[2];
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};
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namespace mozilla {
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namespace dom {
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typedef SVGFEUnstyledElement SVGFELightElementBase;
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class SVGFELightElement : public SVGFELightElementBase
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{
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protected:
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explicit SVGFELightElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
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: SVGFELightElementBase(aNodeInfo) {}
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public:
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typedef gfx::AttributeMap AttributeMap;
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virtual AttributeMap
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ComputeLightAttributes(nsSVGFilterInstance* aInstance) = 0;
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};
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} // namespace dom
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} // namespace mozilla
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#endif
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