зеркало из https://github.com/mozilla/gecko-dev.git
256 строки
8.4 KiB
C++
256 строки
8.4 KiB
C++
/* -*- 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 "SVGElement.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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namespace mozilla {
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namespace dom {
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struct SVGStringInfo {
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SVGStringInfo(const nsSVGString* aString, SVGElement* aElement)
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: mString(aString), mElement(aElement) {}
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const nsSVGString* mString;
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SVGElement* mElement;
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};
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typedef SVGElement SVGFEBase;
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#define NS_SVG_FE_CID \
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{ \
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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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}
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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 SVGFE : public SVGFEBase {
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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 SVGFE(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
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: SVGFEBase(std::move(aNodeInfo)) {}
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virtual ~SVGFE() {}
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public:
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typedef mozilla::gfx::PrimitiveAttributes PrimitiveAttributes;
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ColorSpace GetInputColorSpace(int32_t aInputIndex,
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ColorSpace aUnchangedInputColorSpace) {
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return OperatesOnSRGB(aInputIndex,
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aUnchangedInputColorSpace == ColorSpace::SRGB)
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? ColorSpace::SRGB
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: 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 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 nsAtom* aAttribute) const override;
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// SVGElement interface
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virtual nsresult Clone(mozilla::dom::NodeInfo*,
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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 & ~eFILTER);
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}
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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<SVGStringInfo>& aSources);
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virtual FilterPrimitiveDescription GetPrimitiveDescription(
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nsSVGFilterInstance* aInstance, 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(int32_t aNameSpaceID,
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nsAtom* 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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// SVGElement 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(SVGFE, NS_SVG_FE_CID)
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typedef SVGElement SVGFEUnstyledElementBase;
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class SVGFEUnstyledElement : public SVGFEUnstyledElementBase {
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protected:
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explicit SVGFEUnstyledElement(
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
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: SVGFEUnstyledElementBase(std::move(aNodeInfo)) {}
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public:
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virtual nsresult Clone(mozilla::dom::NodeInfo*,
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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(int32_t aNameSpaceID,
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nsAtom* aAttribute) const = 0;
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};
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//------------------------------------------------------------
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typedef SVGFE SVGFELightingElementBase;
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class SVGFELightingElement : public SVGFELightingElementBase {
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protected:
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explicit SVGFELightingElement(
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
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: SVGFELightingElementBase(std::move(aNodeInfo)) {}
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virtual ~SVGFELightingElement() {}
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public:
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// interfaces:
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NS_INLINE_DECL_REFCOUNTING_INHERITED(SVGFELightingElement,
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SVGFELightingElementBase)
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virtual bool AttributeAffectsRendering(int32_t aNameSpaceID,
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nsAtom* aAttribute) const override;
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virtual nsSVGString& GetResultImageName() override {
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return mStringAttributes[RESULT];
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}
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virtual void GetSourceImageNames(nsTArray<SVGStringInfo>& aSources) override;
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NS_IMETHOD_(bool) IsAttributeMapped(const nsAtom* 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 {
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return true;
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}
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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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mozilla::gfx::LightType ComputeLightAttributes(
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nsSVGFilterInstance* aInstance, nsTArray<float>& aFloatAttributes);
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bool AddLightingAttributes(
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mozilla::gfx::DiffuseLightingAttributes* aAttributes,
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nsSVGFilterInstance* aInstance);
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enum {
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SURFACE_SCALE,
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DIFFUSE_CONSTANT,
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SPECULAR_CONSTANT,
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SPECULAR_EXPONENT
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};
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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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typedef SVGFEUnstyledElement SVGFELightElementBase;
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class SVGFELightElement : public SVGFELightElementBase {
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protected:
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explicit SVGFELightElement(
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
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: SVGFELightElementBase(std::move(aNodeInfo)) {}
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public:
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typedef gfx::PrimitiveAttributes PrimitiveAttributes;
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virtual mozilla::gfx::LightType ComputeLightAttributes(
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nsSVGFilterInstance* aInstance, nsTArray<float>& aFloatAttributes) = 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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