зеркало из https://github.com/mozilla/gecko-dev.git
569 строки
17 KiB
C++
569 строки
17 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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#include "mozilla/ArrayUtils.h"
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#include "nsSVGElement.h"
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#include "nsGkAtoms.h"
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#include "nsSVGNumber2.h"
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#include "nsSVGNumberPair.h"
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#include "nsSVGInteger.h"
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#include "nsSVGIntegerPair.h"
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#include "nsSVGBoolean.h"
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#include "nsCOMPtr.h"
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#include "nsSVGFilterInstance.h"
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#include "nsSVGEnum.h"
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#include "SVGNumberList.h"
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#include "SVGAnimatedNumberList.h"
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#include "DOMSVGAnimatedNumberList.h"
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#include "nsSVGFilters.h"
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#include "nsLayoutUtils.h"
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#include "nsSVGUtils.h"
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#include "nsStyleContext.h"
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#include "nsIFrame.h"
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#include "imgIContainer.h"
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#include "mozilla/dom/SVGFilterElement.h"
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#include "nsSVGString.h"
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#include "SVGContentUtils.h"
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#include <algorithm>
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#include "mozilla/dom/SVGAnimatedLength.h"
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#include "mozilla/dom/SVGComponentTransferFunctionElement.h"
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#include "mozilla/dom/SVGFEDistantLightElement.h"
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#include "mozilla/dom/SVGFEFuncAElementBinding.h"
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#include "mozilla/dom/SVGFEFuncBElementBinding.h"
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#include "mozilla/dom/SVGFEFuncGElementBinding.h"
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#include "mozilla/dom/SVGFEFuncRElementBinding.h"
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#include "mozilla/dom/SVGFEPointLightElement.h"
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#include "mozilla/dom/SVGFESpotLightElement.h"
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#include "mozilla/dom/SVGLengthBinding.h"
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#if defined(XP_WIN)
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// Prevent Windows redefining LoadImage
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#undef LoadImage
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#endif
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using namespace mozilla;
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using namespace mozilla::dom;
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using namespace mozilla::gfx;
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//--------------------Filter Element Base Class-----------------------
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nsSVGElement::LengthInfo nsSVGFE::sLengthInfo[4] =
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{
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{ &nsGkAtoms::x, 0, SVGLengthBinding::SVG_LENGTHTYPE_PERCENTAGE, SVGContentUtils::X },
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{ &nsGkAtoms::y, 0, SVGLengthBinding::SVG_LENGTHTYPE_PERCENTAGE, SVGContentUtils::Y },
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{ &nsGkAtoms::width, 100, SVGLengthBinding::SVG_LENGTHTYPE_PERCENTAGE, SVGContentUtils::X },
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{ &nsGkAtoms::height, 100, SVGLengthBinding::SVG_LENGTHTYPE_PERCENTAGE, SVGContentUtils::Y }
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};
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//----------------------------------------------------------------------
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// nsISupports methods
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NS_IMPL_ADDREF_INHERITED(nsSVGFE,nsSVGFEBase)
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NS_IMPL_RELEASE_INHERITED(nsSVGFE,nsSVGFEBase)
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NS_INTERFACE_MAP_BEGIN(nsSVGFE)
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// nsISupports is an ambiguous base of nsSVGFE so we have to work
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// around that
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if ( aIID.Equals(NS_GET_IID(nsSVGFE)) )
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foundInterface = static_cast<nsISupports*>(static_cast<void*>(this));
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else
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NS_INTERFACE_MAP_END_INHERITING(nsSVGFEBase)
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//----------------------------------------------------------------------
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// Implementation
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void
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nsSVGFE::GetSourceImageNames(nsTArray<nsSVGStringInfo>& aSources)
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{
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}
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bool
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nsSVGFE::OutputIsTainted(const nsTArray<bool>& aInputsAreTainted,
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nsIPrincipal* aReferencePrincipal)
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{
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// This is the default implementation for OutputIsTainted.
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// Our output is tainted if we have at least one tainted input.
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for (uint32_t i = 0; i < aInputsAreTainted.Length(); i++) {
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if (aInputsAreTainted[i]) {
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return true;
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}
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}
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return false;
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}
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bool
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nsSVGFE::AttributeAffectsRendering(int32_t aNameSpaceID,
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nsAtom* aAttribute) const
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{
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return aNameSpaceID == kNameSpaceID_None &&
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(aAttribute == nsGkAtoms::x ||
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aAttribute == nsGkAtoms::y ||
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aAttribute == nsGkAtoms::width ||
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aAttribute == nsGkAtoms::height ||
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aAttribute == nsGkAtoms::result);
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}
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already_AddRefed<SVGAnimatedLength>
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nsSVGFE::X()
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{
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return mLengthAttributes[ATTR_X].ToDOMAnimatedLength(this);
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}
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already_AddRefed<SVGAnimatedLength>
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nsSVGFE::Y()
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{
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return mLengthAttributes[ATTR_Y].ToDOMAnimatedLength(this);
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}
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already_AddRefed<SVGAnimatedLength>
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nsSVGFE::Width()
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{
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return mLengthAttributes[ATTR_WIDTH].ToDOMAnimatedLength(this);
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}
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already_AddRefed<SVGAnimatedLength>
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nsSVGFE::Height()
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{
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return mLengthAttributes[ATTR_HEIGHT].ToDOMAnimatedLength(this);
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}
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already_AddRefed<SVGAnimatedString>
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nsSVGFE::Result()
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{
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return GetResultImageName().ToDOMAnimatedString(this);
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}
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//----------------------------------------------------------------------
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// nsIContent methods
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NS_IMETHODIMP_(bool)
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nsSVGFE::IsAttributeMapped(const nsAtom* name) const
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{
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static const MappedAttributeEntry* const map[] = {
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sFiltersMap
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};
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return FindAttributeDependence(name, map) ||
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nsSVGFEBase::IsAttributeMapped(name);
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}
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//----------------------------------------------------------------------
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// nsSVGElement methods
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bool
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nsSVGFE::StyleIsSetToSRGB()
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{
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nsIFrame* frame = GetPrimaryFrame();
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if (!frame) return false;
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nsStyleContext* style = frame->StyleContext();
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return style->StyleSVG()->mColorInterpolationFilters ==
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NS_STYLE_COLOR_INTERPOLATION_SRGB;
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}
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/* virtual */ bool
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nsSVGFE::HasValidDimensions() const
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{
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return (!mLengthAttributes[ATTR_WIDTH].IsExplicitlySet() ||
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mLengthAttributes[ATTR_WIDTH].GetAnimValInSpecifiedUnits() > 0) &&
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(!mLengthAttributes[ATTR_HEIGHT].IsExplicitlySet() ||
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mLengthAttributes[ATTR_HEIGHT].GetAnimValInSpecifiedUnits() > 0);
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}
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Size
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nsSVGFE::GetKernelUnitLength(nsSVGFilterInstance* aInstance,
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nsSVGNumberPair *aKernelUnitLength)
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{
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if (!aKernelUnitLength->IsExplicitlySet()) {
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return Size(1, 1);
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}
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float kernelX = aInstance->GetPrimitiveNumber(SVGContentUtils::X,
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aKernelUnitLength,
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nsSVGNumberPair::eFirst);
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float kernelY = aInstance->GetPrimitiveNumber(SVGContentUtils::Y,
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aKernelUnitLength,
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nsSVGNumberPair::eSecond);
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return Size(kernelX, kernelY);
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}
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nsSVGElement::LengthAttributesInfo
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nsSVGFE::GetLengthInfo()
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{
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return LengthAttributesInfo(mLengthAttributes, sLengthInfo,
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ArrayLength(sLengthInfo));
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}
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namespace mozilla {
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namespace dom {
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nsSVGElement::NumberListInfo SVGComponentTransferFunctionElement::sNumberListInfo[1] =
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{
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{ &nsGkAtoms::tableValues }
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};
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nsSVGElement::NumberInfo SVGComponentTransferFunctionElement::sNumberInfo[5] =
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{
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{ &nsGkAtoms::slope, 1, false },
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{ &nsGkAtoms::intercept, 0, false },
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{ &nsGkAtoms::amplitude, 1, false },
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{ &nsGkAtoms::exponent, 1, false },
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{ &nsGkAtoms::offset, 0, false }
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};
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nsSVGEnumMapping SVGComponentTransferFunctionElement::sTypeMap[] = {
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{&nsGkAtoms::identity,
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SVG_FECOMPONENTTRANSFER_TYPE_IDENTITY},
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{&nsGkAtoms::table,
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SVG_FECOMPONENTTRANSFER_TYPE_TABLE},
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{&nsGkAtoms::discrete,
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SVG_FECOMPONENTTRANSFER_TYPE_DISCRETE},
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{&nsGkAtoms::linear,
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SVG_FECOMPONENTTRANSFER_TYPE_LINEAR},
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{&nsGkAtoms::gamma,
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SVG_FECOMPONENTTRANSFER_TYPE_GAMMA},
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{nullptr, 0}
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};
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nsSVGElement::EnumInfo SVGComponentTransferFunctionElement::sEnumInfo[1] =
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{
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{ &nsGkAtoms::type,
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sTypeMap,
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SVG_FECOMPONENTTRANSFER_TYPE_IDENTITY
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}
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};
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//----------------------------------------------------------------------
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// nsISupports methods
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NS_IMPL_ADDREF_INHERITED(SVGComponentTransferFunctionElement,SVGComponentTransferFunctionElementBase)
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NS_IMPL_RELEASE_INHERITED(SVGComponentTransferFunctionElement,SVGComponentTransferFunctionElementBase)
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NS_INTERFACE_MAP_BEGIN(SVGComponentTransferFunctionElement)
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// nsISupports is an ambiguous base of nsSVGFE so we have to work
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// around that
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if ( aIID.Equals(NS_GET_IID(SVGComponentTransferFunctionElement)) )
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foundInterface = static_cast<nsISupports*>(static_cast<void*>(this));
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else
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NS_INTERFACE_MAP_END_INHERITING(SVGComponentTransferFunctionElementBase)
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//----------------------------------------------------------------------
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// nsFEUnstyledElement methods
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bool
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SVGComponentTransferFunctionElement::AttributeAffectsRendering(int32_t aNameSpaceID,
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nsAtom* aAttribute) const
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{
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return aNameSpaceID == kNameSpaceID_None &&
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(aAttribute == nsGkAtoms::tableValues ||
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aAttribute == nsGkAtoms::slope ||
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aAttribute == nsGkAtoms::intercept ||
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aAttribute == nsGkAtoms::amplitude ||
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aAttribute == nsGkAtoms::exponent ||
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aAttribute == nsGkAtoms::offset ||
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aAttribute == nsGkAtoms::type);
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}
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//----------------------------------------------------------------------
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already_AddRefed<SVGAnimatedEnumeration>
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SVGComponentTransferFunctionElement::Type()
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{
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return mEnumAttributes[TYPE].ToDOMAnimatedEnum(this);
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}
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already_AddRefed<DOMSVGAnimatedNumberList>
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SVGComponentTransferFunctionElement::TableValues()
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{
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return DOMSVGAnimatedNumberList::GetDOMWrapper(
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&mNumberListAttributes[TABLEVALUES], this, TABLEVALUES);
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}
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already_AddRefed<SVGAnimatedNumber>
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SVGComponentTransferFunctionElement::Slope()
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{
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return mNumberAttributes[SLOPE].ToDOMAnimatedNumber(this);
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}
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already_AddRefed<SVGAnimatedNumber>
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SVGComponentTransferFunctionElement::Intercept()
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{
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return mNumberAttributes[INTERCEPT].ToDOMAnimatedNumber(this);
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}
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already_AddRefed<SVGAnimatedNumber>
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SVGComponentTransferFunctionElement::Amplitude()
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{
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return mNumberAttributes[AMPLITUDE].ToDOMAnimatedNumber(this);
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}
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already_AddRefed<SVGAnimatedNumber>
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SVGComponentTransferFunctionElement::Exponent()
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{
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return mNumberAttributes[EXPONENT].ToDOMAnimatedNumber(this);
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}
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already_AddRefed<SVGAnimatedNumber>
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SVGComponentTransferFunctionElement::Offset()
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{
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return mNumberAttributes[OFFSET].ToDOMAnimatedNumber(this);
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}
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AttributeMap
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SVGComponentTransferFunctionElement::ComputeAttributes()
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{
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uint32_t type = mEnumAttributes[TYPE].GetAnimValue();
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float slope, intercept, amplitude, exponent, offset;
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GetAnimatedNumberValues(&slope, &intercept, &litude,
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&exponent, &offset, nullptr);
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const SVGNumberList &tableValues =
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mNumberListAttributes[TABLEVALUES].GetAnimValue();
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AttributeMap map;
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map.Set(eComponentTransferFunctionType, type);
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map.Set(eComponentTransferFunctionSlope, slope);
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map.Set(eComponentTransferFunctionIntercept, intercept);
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map.Set(eComponentTransferFunctionAmplitude, amplitude);
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map.Set(eComponentTransferFunctionExponent, exponent);
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map.Set(eComponentTransferFunctionOffset, offset);
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if (tableValues.Length()) {
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map.Set(eComponentTransferFunctionTableValues, &tableValues[0], tableValues.Length());
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} else {
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map.Set(eComponentTransferFunctionTableValues, nullptr, 0);
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}
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return map;
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}
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//----------------------------------------------------------------------
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// nsSVGElement methods
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nsSVGElement::NumberListAttributesInfo
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SVGComponentTransferFunctionElement::GetNumberListInfo()
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{
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return NumberListAttributesInfo(mNumberListAttributes, sNumberListInfo,
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ArrayLength(sNumberListInfo));
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}
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nsSVGElement::EnumAttributesInfo
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SVGComponentTransferFunctionElement::GetEnumInfo()
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{
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return EnumAttributesInfo(mEnumAttributes, sEnumInfo,
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ArrayLength(sEnumInfo));
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}
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nsSVGElement::NumberAttributesInfo
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SVGComponentTransferFunctionElement::GetNumberInfo()
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{
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return NumberAttributesInfo(mNumberAttributes, sNumberInfo,
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ArrayLength(sNumberInfo));
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}
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/* virtual */ JSObject*
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SVGFEFuncRElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return SVGFEFuncRElementBinding::Wrap(aCx, this, aGivenProto);
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}
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} // namespace dom
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} // namespace mozilla
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NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT(FEFuncR)
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namespace mozilla {
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namespace dom {
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NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGFEFuncRElement)
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/* virtual */ JSObject*
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SVGFEFuncGElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return SVGFEFuncGElementBinding::Wrap(aCx, this, aGivenProto);
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}
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} // namespace dom
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} // namespace mozilla
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NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT(FEFuncG)
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namespace mozilla {
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namespace dom {
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NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGFEFuncGElement)
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/* virtual */ JSObject*
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SVGFEFuncBElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return SVGFEFuncBElementBinding::Wrap(aCx, this, aGivenProto);
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}
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} // namespace dom
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} // namespace mozilla
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NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT(FEFuncB)
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namespace mozilla {
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namespace dom {
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NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGFEFuncBElement)
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/* virtual */ JSObject*
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SVGFEFuncAElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return SVGFEFuncAElementBinding::Wrap(aCx, this, aGivenProto);
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}
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} // namespace dom
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} // namespace mozilla
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NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT(FEFuncA)
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namespace mozilla {
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namespace dom {
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NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGFEFuncAElement)
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} // namespace dom
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} // namespace mozilla
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//--------------------------------------------------------------------
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//
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nsSVGElement::NumberInfo nsSVGFELightingElement::sNumberInfo[4] =
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{
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{ &nsGkAtoms::surfaceScale, 1, false },
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{ &nsGkAtoms::diffuseConstant, 1, false },
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{ &nsGkAtoms::specularConstant, 1, false },
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{ &nsGkAtoms::specularExponent, 1, false }
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};
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nsSVGElement::NumberPairInfo nsSVGFELightingElement::sNumberPairInfo[1] =
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{
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{ &nsGkAtoms::kernelUnitLength, 0, 0 }
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};
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nsSVGElement::StringInfo nsSVGFELightingElement::sStringInfo[2] =
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{
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{ &nsGkAtoms::result, kNameSpaceID_None, true },
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{ &nsGkAtoms::in, kNameSpaceID_None, true }
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};
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//----------------------------------------------------------------------
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// nsISupports methods
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NS_IMPL_ADDREF_INHERITED(nsSVGFELightingElement,nsSVGFELightingElementBase)
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NS_IMPL_RELEASE_INHERITED(nsSVGFELightingElement,nsSVGFELightingElementBase)
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NS_INTERFACE_MAP_BEGIN(nsSVGFELightingElement)
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NS_INTERFACE_MAP_END_INHERITING(nsSVGFELightingElementBase)
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//----------------------------------------------------------------------
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// Implementation
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NS_IMETHODIMP_(bool)
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nsSVGFELightingElement::IsAttributeMapped(const nsAtom* name) const
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{
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static const MappedAttributeEntry* const map[] = {
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sLightingEffectsMap
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};
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return FindAttributeDependence(name, map) ||
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nsSVGFELightingElementBase::IsAttributeMapped(name);
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}
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void
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nsSVGFELightingElement::GetSourceImageNames(nsTArray<nsSVGStringInfo>& aSources)
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{
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aSources.AppendElement(nsSVGStringInfo(&mStringAttributes[IN1], this));
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}
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AttributeMap
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nsSVGFELightingElement::ComputeLightAttributes(nsSVGFilterInstance* aInstance)
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{
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// find specified light
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for (nsCOMPtr<nsIContent> child = nsINode::GetFirstChild();
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child;
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child = child->GetNextSibling()) {
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if (child->IsAnyOfSVGElements(nsGkAtoms::feDistantLight,
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nsGkAtoms::fePointLight,
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nsGkAtoms::feSpotLight)) {
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return static_cast<SVGFELightElement*>(child.get())->ComputeLightAttributes(aInstance);
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}
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}
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AttributeMap map;
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map.Set(eLightType, (uint32_t)eLightTypeNone);
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return map;
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}
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FilterPrimitiveDescription
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nsSVGFELightingElement::AddLightingAttributes(const FilterPrimitiveDescription& aDescription,
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nsSVGFilterInstance* aInstance)
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{
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nsIFrame* frame = GetPrimaryFrame();
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if (!frame) {
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return FilterPrimitiveDescription(PrimitiveType::Empty);
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}
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nsStyleContext* style = frame->StyleContext();
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|
Color color(Color::FromABGR(style->StyleSVGReset()->mLightingColor));
|
|
color.a = 1.f;
|
|
float surfaceScale = mNumberAttributes[SURFACE_SCALE].GetAnimValue();
|
|
Size kernelUnitLength =
|
|
GetKernelUnitLength(aInstance, &mNumberPairAttributes[KERNEL_UNIT_LENGTH]);
|
|
|
|
if (kernelUnitLength.width <= 0 || kernelUnitLength.height <= 0) {
|
|
// According to spec, A negative or zero value is an error. See link below for details.
|
|
// https://www.w3.org/TR/SVG/filters.html#feSpecularLightingKernelUnitLengthAttribute
|
|
return FilterPrimitiveDescription(PrimitiveType::Empty);
|
|
}
|
|
|
|
FilterPrimitiveDescription descr = aDescription;
|
|
descr.Attributes().Set(eLightingLight, ComputeLightAttributes(aInstance));
|
|
descr.Attributes().Set(eLightingSurfaceScale, surfaceScale);
|
|
descr.Attributes().Set(eLightingKernelUnitLength, kernelUnitLength);
|
|
descr.Attributes().Set(eLightingColor, color);
|
|
return descr;
|
|
}
|
|
|
|
bool
|
|
nsSVGFELightingElement::AttributeAffectsRendering(int32_t aNameSpaceID,
|
|
nsAtom* aAttribute) const
|
|
{
|
|
return nsSVGFELightingElementBase::AttributeAffectsRendering(aNameSpaceID, aAttribute) ||
|
|
(aNameSpaceID == kNameSpaceID_None &&
|
|
(aAttribute == nsGkAtoms::in ||
|
|
aAttribute == nsGkAtoms::surfaceScale ||
|
|
aAttribute == nsGkAtoms::kernelUnitLength));
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsSVGElement methods
|
|
|
|
nsSVGElement::NumberAttributesInfo
|
|
nsSVGFELightingElement::GetNumberInfo()
|
|
{
|
|
return NumberAttributesInfo(mNumberAttributes, sNumberInfo,
|
|
ArrayLength(sNumberInfo));
|
|
}
|
|
|
|
nsSVGElement::NumberPairAttributesInfo
|
|
nsSVGFELightingElement::GetNumberPairInfo()
|
|
{
|
|
return NumberPairAttributesInfo(mNumberPairAttributes, sNumberPairInfo,
|
|
ArrayLength(sNumberPairInfo));
|
|
}
|
|
|
|
nsSVGElement::StringAttributesInfo
|
|
nsSVGFELightingElement::GetStringInfo()
|
|
{
|
|
return StringAttributesInfo(mStringAttributes, sStringInfo,
|
|
ArrayLength(sStringInfo));
|
|
}
|