зеркало из https://github.com/mozilla/gecko-dev.git
Bug 847120: Move SVGFECompositeElement to its own file r=Ms2ger
--HG-- rename : content/svg/content/src/nsSVGFilters.cpp => content/svg/content/src/SVGFECompositeElement.cpp rename : content/svg/content/src/nsSVGFilters.cpp => content/svg/content/src/SVGFECompositeElement.h
This commit is contained in:
David Zbarsky
Родитель
89799c6ba8
Коммит
c4bd6efa12
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@ -81,6 +81,7 @@ CPPSRCS = \
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SVGFEBlendElement.cpp \
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SVGFEColorMatrixElement.cpp \
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SVGFEComponentTransferElement.cpp \
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SVGFECompositeElement.cpp \
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SVGFEDistantLightElement.cpp \
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SVGFEFloodElement.cpp \
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SVGFEImageElement.cpp \
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@ -182,6 +183,7 @@ EXPORTS_mozilla/dom = \
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SVGFEBlendElement.h \
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SVGFEColorMatrixElement.h \
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SVGFEComponentTransferElement.h \
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SVGFECompositeElement.h \
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SVGFEDistantLightElement.h \
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SVGFEFloodElement.h \
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SVGFEImageElement.h \
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@ -0,0 +1,262 @@
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/* a*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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/dom/SVGFECompositeElement.h"
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NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT(FEComposite)
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namespace mozilla {
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namespace dom {
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nsSVGElement::NumberInfo nsSVGFECompositeElement::sNumberInfo[4] =
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{
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{ &nsGkAtoms::k1, 0, false },
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{ &nsGkAtoms::k2, 0, false },
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{ &nsGkAtoms::k3, 0, false },
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{ &nsGkAtoms::k4, 0, false }
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};
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nsSVGEnumMapping nsSVGFECompositeElement::sOperatorMap[] = {
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{&nsGkAtoms::over, nsSVGFECompositeElement::SVG_OPERATOR_OVER},
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{&nsGkAtoms::in, nsSVGFECompositeElement::SVG_OPERATOR_IN},
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{&nsGkAtoms::out, nsSVGFECompositeElement::SVG_OPERATOR_OUT},
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{&nsGkAtoms::atop, nsSVGFECompositeElement::SVG_OPERATOR_ATOP},
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{&nsGkAtoms::xor_, nsSVGFECompositeElement::SVG_OPERATOR_XOR},
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{&nsGkAtoms::arithmetic, nsSVGFECompositeElement::SVG_OPERATOR_ARITHMETIC},
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{nullptr, 0}
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};
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nsSVGElement::EnumInfo nsSVGFECompositeElement::sEnumInfo[1] =
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{
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{ &nsGkAtoms::_operator,
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sOperatorMap,
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nsIDOMSVGFECompositeElement::SVG_OPERATOR_OVER
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}
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};
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nsSVGElement::StringInfo nsSVGFECompositeElement::sStringInfo[3] =
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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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{ &nsGkAtoms::in2, 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(nsSVGFECompositeElement,nsSVGFECompositeElementBase)
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NS_IMPL_RELEASE_INHERITED(nsSVGFECompositeElement,nsSVGFECompositeElementBase)
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DOMCI_NODE_DATA(SVGFECompositeElement, nsSVGFECompositeElement)
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NS_INTERFACE_TABLE_HEAD(nsSVGFECompositeElement)
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NS_NODE_INTERFACE_TABLE5(nsSVGFECompositeElement, nsIDOMNode, nsIDOMElement,
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nsIDOMSVGElement,
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nsIDOMSVGFilterPrimitiveStandardAttributes,
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nsIDOMSVGFECompositeElement)
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NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(SVGFECompositeElement)
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NS_INTERFACE_MAP_END_INHERITING(nsSVGFECompositeElementBase)
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//----------------------------------------------------------------------
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// nsIDOMNode methods
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NS_IMPL_ELEMENT_CLONE_WITH_INIT(nsSVGFECompositeElement)
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//----------------------------------------------------------------------
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// nsSVGFECompositeElement methods
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/* readonly attribute nsIDOMSVGAnimatedString in1; */
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NS_IMETHODIMP nsSVGFECompositeElement::GetIn1(nsIDOMSVGAnimatedString * *aIn)
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{
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return mStringAttributes[IN1].ToDOMAnimatedString(aIn, this);
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}
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/* readonly attribute nsIDOMSVGAnimatedString in2; */
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NS_IMETHODIMP nsSVGFECompositeElement::GetIn2(nsIDOMSVGAnimatedString * *aIn)
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{
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return mStringAttributes[IN2].ToDOMAnimatedString(aIn, this);
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}
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/* readonly attribute nsIDOMSVGAnimatedEnumeration operator; */
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NS_IMETHODIMP nsSVGFECompositeElement::GetOperator(nsIDOMSVGAnimatedEnumeration * *aOperator)
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{
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return mEnumAttributes[OPERATOR].ToDOMAnimatedEnum(aOperator, this);
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}
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/* readonly attribute nsIDOMSVGAnimatedNumber K1; */
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NS_IMETHODIMP nsSVGFECompositeElement::GetK1(nsIDOMSVGAnimatedNumber * *aK1)
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{
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return mNumberAttributes[K1].ToDOMAnimatedNumber(aK1, this);
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}
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/* readonly attribute nsIDOMSVGAnimatedNumber K2; */
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NS_IMETHODIMP nsSVGFECompositeElement::GetK2(nsIDOMSVGAnimatedNumber * *aK2)
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{
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return mNumberAttributes[K2].ToDOMAnimatedNumber(aK2, this);
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}
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/* readonly attribute nsIDOMSVGAnimatedNumber K3; */
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NS_IMETHODIMP nsSVGFECompositeElement::GetK3(nsIDOMSVGAnimatedNumber * *aK3)
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{
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return mNumberAttributes[K3].ToDOMAnimatedNumber(aK3, this);
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}
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/* readonly attribute nsIDOMSVGAnimatedNumber K4; */
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NS_IMETHODIMP nsSVGFECompositeElement::GetK4(nsIDOMSVGAnimatedNumber * *aK4)
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{
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return mNumberAttributes[K4].ToDOMAnimatedNumber(aK4, this);
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}
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NS_IMETHODIMP
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nsSVGFECompositeElement::SetK(float k1, float k2, float k3, float k4)
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{
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NS_ENSURE_FINITE4(k1, k2, k3, k4, NS_ERROR_ILLEGAL_VALUE);
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mNumberAttributes[K1].SetBaseValue(k1, this);
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mNumberAttributes[K2].SetBaseValue(k2, this);
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mNumberAttributes[K3].SetBaseValue(k3, this);
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mNumberAttributes[K4].SetBaseValue(k4, this);
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return NS_OK;
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}
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nsresult
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nsSVGFECompositeElement::Filter(nsSVGFilterInstance *instance,
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const nsTArray<const Image*>& aSources,
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const Image* aTarget,
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const nsIntRect& rect)
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{
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uint16_t op = mEnumAttributes[OPERATOR].GetAnimValue();
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// Cairo does not support arithmetic operator
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if (op == nsSVGFECompositeElement::SVG_OPERATOR_ARITHMETIC) {
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float k1, k2, k3, k4;
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GetAnimatedNumberValues(&k1, &k2, &k3, &k4, nullptr);
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// Copy the first source image
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CopyRect(aTarget, aSources[0], rect);
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uint8_t* sourceData = aSources[1]->mImage->Data();
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uint8_t* targetData = aTarget->mImage->Data();
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uint32_t stride = aTarget->mImage->Stride();
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// Blend in the second source image
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float k1Scaled = k1 / 255.0f;
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float k4Scaled = k4*255.0f;
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for (int32_t x = rect.x; x < rect.XMost(); x++) {
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for (int32_t y = rect.y; y < rect.YMost(); y++) {
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uint32_t targIndex = y * stride + 4 * x;
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for (int32_t i = 0; i < 4; i++) {
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uint8_t i1 = targetData[targIndex + i];
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uint8_t i2 = sourceData[targIndex + i];
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float result = k1Scaled*i1*i2 + k2*i1 + k3*i2 + k4Scaled;
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targetData[targIndex + i] =
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static_cast<uint8_t>(clamped(result, 0.f, 255.f));
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}
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}
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}
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return NS_OK;
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}
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// Cairo supports the operation we are trying to perform
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gfxContext ctx(aTarget->mImage);
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ctx.SetOperator(gfxContext::OPERATOR_SOURCE);
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ctx.SetSource(aSources[1]->mImage);
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// Ensure rendering is limited to the filter primitive subregion
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ctx.Clip(aTarget->mFilterPrimitiveSubregion);
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ctx.Paint();
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if (op < SVG_OPERATOR_OVER || op > SVG_OPERATOR_XOR) {
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return NS_ERROR_FAILURE;
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}
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static const gfxContext::GraphicsOperator opMap[] = {
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gfxContext::OPERATOR_DEST,
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gfxContext::OPERATOR_OVER,
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gfxContext::OPERATOR_IN,
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gfxContext::OPERATOR_OUT,
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gfxContext::OPERATOR_ATOP,
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gfxContext::OPERATOR_XOR };
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ctx.SetOperator(opMap[op]);
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ctx.SetSource(aSources[0]->mImage);
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ctx.Paint();
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return NS_OK;
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}
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bool
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nsSVGFECompositeElement::AttributeAffectsRendering(int32_t aNameSpaceID,
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nsIAtom* aAttribute) const
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{
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return nsSVGFECompositeElementBase::AttributeAffectsRendering(aNameSpaceID, aAttribute) ||
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(aNameSpaceID == kNameSpaceID_None &&
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(aAttribute == nsGkAtoms::in ||
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aAttribute == nsGkAtoms::in2 ||
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aAttribute == nsGkAtoms::k1 ||
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aAttribute == nsGkAtoms::k2 ||
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aAttribute == nsGkAtoms::k3 ||
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aAttribute == nsGkAtoms::k4 ||
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aAttribute == nsGkAtoms::_operator));
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}
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void
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nsSVGFECompositeElement::GetSourceImageNames(nsTArray<nsSVGStringInfo>& aSources)
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{
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aSources.AppendElement(nsSVGStringInfo(&mStringAttributes[IN1], this));
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aSources.AppendElement(nsSVGStringInfo(&mStringAttributes[IN2], this));
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}
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nsIntRect
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nsSVGFECompositeElement::ComputeTargetBBox(const nsTArray<nsIntRect>& aSourceBBoxes,
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const nsSVGFilterInstance& aInstance)
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{
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uint16_t op = mEnumAttributes[OPERATOR].GetAnimValue();
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if (op == nsSVGFECompositeElement::SVG_OPERATOR_ARITHMETIC) {
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// "arithmetic" operator can produce non-zero alpha values even where
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// all input alphas are zero, so we can actually render outside the
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// union of the source bboxes.
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// XXX we could also check that k4 is nonzero and check for other
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// cases like k1/k2 or k1/k3 zero.
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return GetMaxRect();
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}
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if (op == nsSVGFECompositeElement::SVG_OPERATOR_IN ||
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op == nsSVGFECompositeElement::SVG_OPERATOR_ATOP) {
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// We will only draw where in2 has nonzero alpha, so it's a good
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// bounding box for us
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return aSourceBBoxes[1];
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}
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// The regular Porter-Duff operators always compute zero alpha values
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// where all sources have zero alpha, so the union of their bounding
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// boxes is also a bounding box for our rendering
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return nsSVGFECompositeElementBase::ComputeTargetBBox(aSourceBBoxes, aInstance);
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}
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//----------------------------------------------------------------------
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// nsSVGElement methods
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nsSVGElement::NumberAttributesInfo
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nsSVGFECompositeElement::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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nsSVGElement::EnumAttributesInfo
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nsSVGFECompositeElement::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::StringAttributesInfo
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nsSVGFECompositeElement::GetStringInfo()
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{
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return StringAttributesInfo(mStringAttributes, sStringInfo,
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ArrayLength(sStringInfo));
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}
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} // namespace dom
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} // namespace mozilla
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@ -0,0 +1,78 @@
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/* a*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 mozilla_dom_SVGFECompositeElement_h
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#define mozilla_dom_SVGFECompositeElement_h
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#include "nsSVGFilters.h"
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namespace mozilla {
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namespace dom {
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typedef nsSVGFE nsSVGFECompositeElementBase;
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class nsSVGFECompositeElement : public nsSVGFECompositeElementBase,
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public nsIDOMSVGFECompositeElement
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{
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friend nsresult NS_NewSVGFECompositeElement(nsIContent **aResult,
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already_AddRefed<nsINodeInfo> aNodeInfo);
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protected:
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nsSVGFECompositeElement(already_AddRefed<nsINodeInfo> aNodeInfo)
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: nsSVGFECompositeElementBase(aNodeInfo) {}
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public:
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// interfaces:
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NS_DECL_ISUPPORTS_INHERITED
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// FE Base
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NS_FORWARD_NSIDOMSVGFILTERPRIMITIVESTANDARDATTRIBUTES(nsSVGFECompositeElementBase::)
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virtual nsresult Filter(nsSVGFilterInstance* aInstance,
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const nsTArray<const Image*>& aSources,
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const Image* aTarget,
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const nsIntRect& aDataRect);
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virtual bool AttributeAffectsRendering(
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int32_t aNameSpaceID, nsIAtom* aAttribute) const;
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virtual nsSVGString& GetResultImageName() { return mStringAttributes[RESULT]; }
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virtual void GetSourceImageNames(nsTArray<nsSVGStringInfo>& aSources);
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virtual nsIntRect ComputeTargetBBox(const nsTArray<nsIntRect>& aSourceBBoxes,
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const nsSVGFilterInstance& aInstance);
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// Composite
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NS_DECL_NSIDOMSVGFECOMPOSITEELEMENT
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NS_FORWARD_NSIDOMSVGELEMENT(nsSVGFECompositeElementBase::)
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NS_FORWARD_NSIDOMNODE_TO_NSINODE
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NS_FORWARD_NSIDOMELEMENT_TO_GENERIC
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virtual nsresult Clone(nsINodeInfo *aNodeInfo, nsINode **aResult) const;
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virtual nsXPCClassInfo* GetClassInfo();
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virtual nsIDOMNode* AsDOMNode() { return this; }
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protected:
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virtual NumberAttributesInfo GetNumberInfo();
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virtual EnumAttributesInfo GetEnumInfo();
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virtual StringAttributesInfo GetStringInfo();
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enum { K1, K2, K3, K4 };
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nsSVGNumber2 mNumberAttributes[4];
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static NumberInfo sNumberInfo[4];
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enum { OPERATOR };
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nsSVGEnum mEnumAttributes[1];
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static nsSVGEnumMapping sOperatorMap[];
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static EnumInfo sEnumInfo[1];
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enum { RESULT, IN1, IN2 };
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nsSVGString mStringAttributes[3];
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static StringInfo sStringInfo[3];
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_SVGFECompositeElement_h
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@ -834,319 +834,6 @@ nsSVGFEGaussianBlurElement::GetStringInfo()
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ArrayLength(sStringInfo));
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}
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//---------------------Composite------------------------
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typedef nsSVGFE nsSVGFECompositeElementBase;
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class nsSVGFECompositeElement : public nsSVGFECompositeElementBase,
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public nsIDOMSVGFECompositeElement
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{
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friend nsresult NS_NewSVGFECompositeElement(nsIContent **aResult,
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already_AddRefed<nsINodeInfo> aNodeInfo);
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protected:
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nsSVGFECompositeElement(already_AddRefed<nsINodeInfo> aNodeInfo)
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: nsSVGFECompositeElementBase(aNodeInfo) {}
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public:
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// interfaces:
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NS_DECL_ISUPPORTS_INHERITED
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// FE Base
|
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NS_FORWARD_NSIDOMSVGFILTERPRIMITIVESTANDARDATTRIBUTES(nsSVGFECompositeElementBase::)
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virtual nsresult Filter(nsSVGFilterInstance* aInstance,
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const nsTArray<const Image*>& aSources,
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const Image* aTarget,
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const nsIntRect& aDataRect);
|
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virtual bool AttributeAffectsRendering(
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int32_t aNameSpaceID, nsIAtom* aAttribute) const;
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virtual nsSVGString& GetResultImageName() { return mStringAttributes[RESULT]; }
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virtual void GetSourceImageNames(nsTArray<nsSVGStringInfo>& aSources);
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virtual nsIntRect ComputeTargetBBox(const nsTArray<nsIntRect>& aSourceBBoxes,
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const nsSVGFilterInstance& aInstance);
|
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// Composite
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NS_DECL_NSIDOMSVGFECOMPOSITEELEMENT
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NS_FORWARD_NSIDOMSVGELEMENT(nsSVGFECompositeElementBase::)
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NS_FORWARD_NSIDOMNODE_TO_NSINODE
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NS_FORWARD_NSIDOMELEMENT_TO_GENERIC
|
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virtual nsresult Clone(nsINodeInfo *aNodeInfo, nsINode **aResult) const;
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virtual nsXPCClassInfo* GetClassInfo();
|
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|
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virtual nsIDOMNode* AsDOMNode() { return this; }
|
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protected:
|
||||
virtual NumberAttributesInfo GetNumberInfo();
|
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virtual EnumAttributesInfo GetEnumInfo();
|
||||
virtual StringAttributesInfo GetStringInfo();
|
||||
|
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enum { K1, K2, K3, K4 };
|
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nsSVGNumber2 mNumberAttributes[4];
|
||||
static NumberInfo sNumberInfo[4];
|
||||
|
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enum { OPERATOR };
|
||||
nsSVGEnum mEnumAttributes[1];
|
||||
static nsSVGEnumMapping sOperatorMap[];
|
||||
static EnumInfo sEnumInfo[1];
|
||||
|
||||
enum { RESULT, IN1, IN2 };
|
||||
nsSVGString mStringAttributes[3];
|
||||
static StringInfo sStringInfo[3];
|
||||
};
|
||||
|
||||
nsSVGElement::NumberInfo nsSVGFECompositeElement::sNumberInfo[4] =
|
||||
{
|
||||
{ &nsGkAtoms::k1, 0, false },
|
||||
{ &nsGkAtoms::k2, 0, false },
|
||||
{ &nsGkAtoms::k3, 0, false },
|
||||
{ &nsGkAtoms::k4, 0, false }
|
||||
};
|
||||
|
||||
nsSVGEnumMapping nsSVGFECompositeElement::sOperatorMap[] = {
|
||||
{&nsGkAtoms::over, nsSVGFECompositeElement::SVG_OPERATOR_OVER},
|
||||
{&nsGkAtoms::in, nsSVGFECompositeElement::SVG_OPERATOR_IN},
|
||||
{&nsGkAtoms::out, nsSVGFECompositeElement::SVG_OPERATOR_OUT},
|
||||
{&nsGkAtoms::atop, nsSVGFECompositeElement::SVG_OPERATOR_ATOP},
|
||||
{&nsGkAtoms::xor_, nsSVGFECompositeElement::SVG_OPERATOR_XOR},
|
||||
{&nsGkAtoms::arithmetic, nsSVGFECompositeElement::SVG_OPERATOR_ARITHMETIC},
|
||||
{nullptr, 0}
|
||||
};
|
||||
|
||||
nsSVGElement::EnumInfo nsSVGFECompositeElement::sEnumInfo[1] =
|
||||
{
|
||||
{ &nsGkAtoms::_operator,
|
||||
sOperatorMap,
|
||||
nsIDOMSVGFECompositeElement::SVG_OPERATOR_OVER
|
||||
}
|
||||
};
|
||||
|
||||
nsSVGElement::StringInfo nsSVGFECompositeElement::sStringInfo[3] =
|
||||
{
|
||||
{ &nsGkAtoms::result, kNameSpaceID_None, true },
|
||||
{ &nsGkAtoms::in, kNameSpaceID_None, true },
|
||||
{ &nsGkAtoms::in2, kNameSpaceID_None, true }
|
||||
};
|
||||
|
||||
NS_IMPL_NS_NEW_SVG_ELEMENT(FEComposite)
|
||||
|
||||
//----------------------------------------------------------------------
|
||||
// nsISupports methods
|
||||
|
||||
NS_IMPL_ADDREF_INHERITED(nsSVGFECompositeElement,nsSVGFECompositeElementBase)
|
||||
NS_IMPL_RELEASE_INHERITED(nsSVGFECompositeElement,nsSVGFECompositeElementBase)
|
||||
|
||||
DOMCI_NODE_DATA(SVGFECompositeElement, nsSVGFECompositeElement)
|
||||
|
||||
NS_INTERFACE_TABLE_HEAD(nsSVGFECompositeElement)
|
||||
NS_NODE_INTERFACE_TABLE5(nsSVGFECompositeElement, nsIDOMNode, nsIDOMElement,
|
||||
nsIDOMSVGElement,
|
||||
nsIDOMSVGFilterPrimitiveStandardAttributes,
|
||||
nsIDOMSVGFECompositeElement)
|
||||
NS_DOM_INTERFACE_MAP_ENTRY_CLASSINFO(SVGFECompositeElement)
|
||||
NS_INTERFACE_MAP_END_INHERITING(nsSVGFECompositeElementBase)
|
||||
|
||||
//----------------------------------------------------------------------
|
||||
// nsIDOMNode methods
|
||||
|
||||
NS_IMPL_ELEMENT_CLONE_WITH_INIT(nsSVGFECompositeElement)
|
||||
|
||||
//----------------------------------------------------------------------
|
||||
// nsSVGFECompositeElement methods
|
||||
|
||||
/* readonly attribute nsIDOMSVGAnimatedString in1; */
|
||||
NS_IMETHODIMP nsSVGFECompositeElement::GetIn1(nsIDOMSVGAnimatedString * *aIn)
|
||||
{
|
||||
return mStringAttributes[IN1].ToDOMAnimatedString(aIn, this);
|
||||
}
|
||||
|
||||
/* readonly attribute nsIDOMSVGAnimatedString in2; */
|
||||
NS_IMETHODIMP nsSVGFECompositeElement::GetIn2(nsIDOMSVGAnimatedString * *aIn)
|
||||
{
|
||||
return mStringAttributes[IN2].ToDOMAnimatedString(aIn, this);
|
||||
}
|
||||
|
||||
|
||||
/* readonly attribute nsIDOMSVGAnimatedEnumeration operator; */
|
||||
NS_IMETHODIMP nsSVGFECompositeElement::GetOperator(nsIDOMSVGAnimatedEnumeration * *aOperator)
|
||||
{
|
||||
return mEnumAttributes[OPERATOR].ToDOMAnimatedEnum(aOperator, this);
|
||||
}
|
||||
|
||||
/* readonly attribute nsIDOMSVGAnimatedNumber K1; */
|
||||
NS_IMETHODIMP nsSVGFECompositeElement::GetK1(nsIDOMSVGAnimatedNumber * *aK1)
|
||||
{
|
||||
return mNumberAttributes[K1].ToDOMAnimatedNumber(aK1, this);
|
||||
}
|
||||
|
||||
/* readonly attribute nsIDOMSVGAnimatedNumber K2; */
|
||||
NS_IMETHODIMP nsSVGFECompositeElement::GetK2(nsIDOMSVGAnimatedNumber * *aK2)
|
||||
{
|
||||
return mNumberAttributes[K2].ToDOMAnimatedNumber(aK2, this);
|
||||
}
|
||||
|
||||
/* readonly attribute nsIDOMSVGAnimatedNumber K3; */
|
||||
NS_IMETHODIMP nsSVGFECompositeElement::GetK3(nsIDOMSVGAnimatedNumber * *aK3)
|
||||
{
|
||||
return mNumberAttributes[K3].ToDOMAnimatedNumber(aK3, this);
|
||||
}
|
||||
|
||||
/* readonly attribute nsIDOMSVGAnimatedNumber K4; */
|
||||
NS_IMETHODIMP nsSVGFECompositeElement::GetK4(nsIDOMSVGAnimatedNumber * *aK4)
|
||||
{
|
||||
return mNumberAttributes[K4].ToDOMAnimatedNumber(aK4, this);
|
||||
}
|
||||
|
||||
NS_IMETHODIMP
|
||||
nsSVGFECompositeElement::SetK(float k1, float k2, float k3, float k4)
|
||||
{
|
||||
NS_ENSURE_FINITE4(k1, k2, k3, k4, NS_ERROR_ILLEGAL_VALUE);
|
||||
mNumberAttributes[K1].SetBaseValue(k1, this);
|
||||
mNumberAttributes[K2].SetBaseValue(k2, this);
|
||||
mNumberAttributes[K3].SetBaseValue(k3, this);
|
||||
mNumberAttributes[K4].SetBaseValue(k4, this);
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
nsresult
|
||||
nsSVGFECompositeElement::Filter(nsSVGFilterInstance *instance,
|
||||
const nsTArray<const Image*>& aSources,
|
||||
const Image* aTarget,
|
||||
const nsIntRect& rect)
|
||||
{
|
||||
uint16_t op = mEnumAttributes[OPERATOR].GetAnimValue();
|
||||
|
||||
// Cairo does not support arithmetic operator
|
||||
if (op == nsSVGFECompositeElement::SVG_OPERATOR_ARITHMETIC) {
|
||||
float k1, k2, k3, k4;
|
||||
GetAnimatedNumberValues(&k1, &k2, &k3, &k4, nullptr);
|
||||
|
||||
// Copy the first source image
|
||||
CopyRect(aTarget, aSources[0], rect);
|
||||
|
||||
uint8_t* sourceData = aSources[1]->mImage->Data();
|
||||
uint8_t* targetData = aTarget->mImage->Data();
|
||||
uint32_t stride = aTarget->mImage->Stride();
|
||||
|
||||
// Blend in the second source image
|
||||
float k1Scaled = k1 / 255.0f;
|
||||
float k4Scaled = k4*255.0f;
|
||||
for (int32_t x = rect.x; x < rect.XMost(); x++) {
|
||||
for (int32_t y = rect.y; y < rect.YMost(); y++) {
|
||||
uint32_t targIndex = y * stride + 4 * x;
|
||||
for (int32_t i = 0; i < 4; i++) {
|
||||
uint8_t i1 = targetData[targIndex + i];
|
||||
uint8_t i2 = sourceData[targIndex + i];
|
||||
float result = k1Scaled*i1*i2 + k2*i1 + k3*i2 + k4Scaled;
|
||||
targetData[targIndex + i] =
|
||||
static_cast<uint8_t>(clamped(result, 0.f, 255.f));
|
||||
}
|
||||
}
|
||||
}
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
// Cairo supports the operation we are trying to perform
|
||||
|
||||
gfxContext ctx(aTarget->mImage);
|
||||
ctx.SetOperator(gfxContext::OPERATOR_SOURCE);
|
||||
ctx.SetSource(aSources[1]->mImage);
|
||||
// Ensure rendering is limited to the filter primitive subregion
|
||||
ctx.Clip(aTarget->mFilterPrimitiveSubregion);
|
||||
ctx.Paint();
|
||||
|
||||
if (op < SVG_OPERATOR_OVER || op > SVG_OPERATOR_XOR) {
|
||||
return NS_ERROR_FAILURE;
|
||||
}
|
||||
static const gfxContext::GraphicsOperator opMap[] = {
|
||||
gfxContext::OPERATOR_DEST,
|
||||
gfxContext::OPERATOR_OVER,
|
||||
gfxContext::OPERATOR_IN,
|
||||
gfxContext::OPERATOR_OUT,
|
||||
gfxContext::OPERATOR_ATOP,
|
||||
gfxContext::OPERATOR_XOR };
|
||||
ctx.SetOperator(opMap[op]);
|
||||
ctx.SetSource(aSources[0]->mImage);
|
||||
ctx.Paint();
|
||||
return NS_OK;
|
||||
}
|
||||
|
||||
bool
|
||||
nsSVGFECompositeElement::AttributeAffectsRendering(int32_t aNameSpaceID,
|
||||
nsIAtom* aAttribute) const
|
||||
{
|
||||
return nsSVGFECompositeElementBase::AttributeAffectsRendering(aNameSpaceID, aAttribute) ||
|
||||
(aNameSpaceID == kNameSpaceID_None &&
|
||||
(aAttribute == nsGkAtoms::in ||
|
||||
aAttribute == nsGkAtoms::in2 ||
|
||||
aAttribute == nsGkAtoms::k1 ||
|
||||
aAttribute == nsGkAtoms::k2 ||
|
||||
aAttribute == nsGkAtoms::k3 ||
|
||||
aAttribute == nsGkAtoms::k4 ||
|
||||
aAttribute == nsGkAtoms::_operator));
|
||||
}
|
||||
|
||||
void
|
||||
nsSVGFECompositeElement::GetSourceImageNames(nsTArray<nsSVGStringInfo>& aSources)
|
||||
{
|
||||
aSources.AppendElement(nsSVGStringInfo(&mStringAttributes[IN1], this));
|
||||
aSources.AppendElement(nsSVGStringInfo(&mStringAttributes[IN2], this));
|
||||
}
|
||||
|
||||
nsIntRect
|
||||
nsSVGFECompositeElement::ComputeTargetBBox(const nsTArray<nsIntRect>& aSourceBBoxes,
|
||||
const nsSVGFilterInstance& aInstance)
|
||||
{
|
||||
uint16_t op = mEnumAttributes[OPERATOR].GetAnimValue();
|
||||
|
||||
if (op == nsSVGFECompositeElement::SVG_OPERATOR_ARITHMETIC) {
|
||||
// "arithmetic" operator can produce non-zero alpha values even where
|
||||
// all input alphas are zero, so we can actually render outside the
|
||||
// union of the source bboxes.
|
||||
// XXX we could also check that k4 is nonzero and check for other
|
||||
// cases like k1/k2 or k1/k3 zero.
|
||||
return GetMaxRect();
|
||||
}
|
||||
|
||||
if (op == nsSVGFECompositeElement::SVG_OPERATOR_IN ||
|
||||
op == nsSVGFECompositeElement::SVG_OPERATOR_ATOP) {
|
||||
// We will only draw where in2 has nonzero alpha, so it's a good
|
||||
// bounding box for us
|
||||
return aSourceBBoxes[1];
|
||||
}
|
||||
|
||||
// The regular Porter-Duff operators always compute zero alpha values
|
||||
// where all sources have zero alpha, so the union of their bounding
|
||||
// boxes is also a bounding box for our rendering
|
||||
return nsSVGFECompositeElementBase::ComputeTargetBBox(aSourceBBoxes, aInstance);
|
||||
}
|
||||
|
||||
//----------------------------------------------------------------------
|
||||
// nsSVGElement methods
|
||||
|
||||
nsSVGElement::NumberAttributesInfo
|
||||
nsSVGFECompositeElement::GetNumberInfo()
|
||||
{
|
||||
return NumberAttributesInfo(mNumberAttributes, sNumberInfo,
|
||||
ArrayLength(sNumberInfo));
|
||||
}
|
||||
|
||||
nsSVGElement::EnumAttributesInfo
|
||||
nsSVGFECompositeElement::GetEnumInfo()
|
||||
{
|
||||
return EnumAttributesInfo(mEnumAttributes, sEnumInfo,
|
||||
ArrayLength(sEnumInfo));
|
||||
}
|
||||
|
||||
nsSVGElement::StringAttributesInfo
|
||||
nsSVGFECompositeElement::GetStringInfo()
|
||||
{
|
||||
return StringAttributesInfo(mStringAttributes, sStringInfo,
|
||||
ArrayLength(sStringInfo));
|
||||
}
|
||||
|
||||
namespace mozilla {
|
||||
namespace dom {
|
||||
|
||||
|
|
|
|||
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