gecko-dev/dom/svg/SVGFEConvolveMatrixElement.cpp

334 строки
10 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/SVGFEConvolveMatrixElement.h"
#include "mozilla/dom/SVGFEConvolveMatrixElementBinding.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/UniquePtrExtensions.h"
#include "DOMSVGAnimatedNumberList.h"
#include "nsSVGUtils.h"
#include "nsSVGFilterInstance.h"
NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT(FEConvolveMatrix)
using namespace mozilla::gfx;
namespace mozilla {
namespace dom {
JSObject*
SVGFEConvolveMatrixElement::WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return SVGFEConvolveMatrixElementBinding::Wrap(aCx, this, aGivenProto);
}
nsSVGElement::NumberInfo SVGFEConvolveMatrixElement::sNumberInfo[2] =
{
{ &nsGkAtoms::divisor, 1, false },
{ &nsGkAtoms::bias, 0, false }
};
nsSVGElement::NumberPairInfo SVGFEConvolveMatrixElement::sNumberPairInfo[1] =
{
{ &nsGkAtoms::kernelUnitLength, 0, 0 }
};
nsSVGElement::IntegerInfo SVGFEConvolveMatrixElement::sIntegerInfo[2] =
{
{ &nsGkAtoms::targetX, 0 },
{ &nsGkAtoms::targetY, 0 }
};
nsSVGElement::IntegerPairInfo SVGFEConvolveMatrixElement::sIntegerPairInfo[1] =
{
{ &nsGkAtoms::order, 3, 3 }
};
nsSVGElement::BooleanInfo SVGFEConvolveMatrixElement::sBooleanInfo[1] =
{
{ &nsGkAtoms::preserveAlpha, false }
};
nsSVGEnumMapping SVGFEConvolveMatrixElement::sEdgeModeMap[] = {
{&nsGkAtoms::duplicate, SVG_EDGEMODE_DUPLICATE},
{&nsGkAtoms::wrap, SVG_EDGEMODE_WRAP},
{&nsGkAtoms::none, SVG_EDGEMODE_NONE},
{nullptr, 0}
};
nsSVGElement::EnumInfo SVGFEConvolveMatrixElement::sEnumInfo[1] =
{
{ &nsGkAtoms::edgeMode,
sEdgeModeMap,
SVG_EDGEMODE_DUPLICATE
}
};
nsSVGElement::StringInfo SVGFEConvolveMatrixElement::sStringInfo[2] =
{
{ &nsGkAtoms::result, kNameSpaceID_None, true },
{ &nsGkAtoms::in, kNameSpaceID_None, true }
};
nsSVGElement::NumberListInfo SVGFEConvolveMatrixElement::sNumberListInfo[1] =
{
{ &nsGkAtoms::kernelMatrix }
};
//----------------------------------------------------------------------
// nsIDOMNode methods
NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGFEConvolveMatrixElement)
//----------------------------------------------------------------------
already_AddRefed<SVGAnimatedString>
SVGFEConvolveMatrixElement::In1()
{
return mStringAttributes[IN1].ToDOMAnimatedString(this);
}
already_AddRefed<SVGAnimatedInteger>
SVGFEConvolveMatrixElement::OrderX()
{
return mIntegerPairAttributes[ORDER].ToDOMAnimatedInteger(nsSVGIntegerPair::eFirst, this);
}
already_AddRefed<SVGAnimatedInteger>
SVGFEConvolveMatrixElement::OrderY()
{
return mIntegerPairAttributes[ORDER].ToDOMAnimatedInteger(nsSVGIntegerPair::eSecond, this);
}
already_AddRefed<DOMSVGAnimatedNumberList>
SVGFEConvolveMatrixElement::KernelMatrix()
{
return DOMSVGAnimatedNumberList::GetDOMWrapper(&mNumberListAttributes[KERNELMATRIX],
this, KERNELMATRIX);
}
already_AddRefed<SVGAnimatedInteger>
SVGFEConvolveMatrixElement::TargetX()
{
return mIntegerAttributes[TARGET_X].ToDOMAnimatedInteger(this);
}
already_AddRefed<SVGAnimatedInteger>
SVGFEConvolveMatrixElement::TargetY()
{
return mIntegerAttributes[TARGET_Y].ToDOMAnimatedInteger(this);
}
already_AddRefed<SVGAnimatedEnumeration>
SVGFEConvolveMatrixElement::EdgeMode()
{
return mEnumAttributes[EDGEMODE].ToDOMAnimatedEnum(this);
}
already_AddRefed<SVGAnimatedBoolean>
SVGFEConvolveMatrixElement::PreserveAlpha()
{
return mBooleanAttributes[PRESERVEALPHA].ToDOMAnimatedBoolean(this);
}
already_AddRefed<SVGAnimatedNumber>
SVGFEConvolveMatrixElement::Divisor()
{
return mNumberAttributes[DIVISOR].ToDOMAnimatedNumber(this);
}
already_AddRefed<SVGAnimatedNumber>
SVGFEConvolveMatrixElement::Bias()
{
return mNumberAttributes[BIAS].ToDOMAnimatedNumber(this);
}
already_AddRefed<SVGAnimatedNumber>
SVGFEConvolveMatrixElement::KernelUnitLengthX()
{
return mNumberPairAttributes[KERNEL_UNIT_LENGTH].ToDOMAnimatedNumber(nsSVGNumberPair::eFirst,
this);
}
already_AddRefed<SVGAnimatedNumber>
SVGFEConvolveMatrixElement::KernelUnitLengthY()
{
return mNumberPairAttributes[KERNEL_UNIT_LENGTH].ToDOMAnimatedNumber(nsSVGNumberPair::eSecond,
this);
}
void
SVGFEConvolveMatrixElement::GetSourceImageNames(nsTArray<nsSVGStringInfo>& aSources)
{
aSources.AppendElement(nsSVGStringInfo(&mStringAttributes[IN1], this));
}
FilterPrimitiveDescription
SVGFEConvolveMatrixElement::GetPrimitiveDescription(nsSVGFilterInstance* aInstance,
const IntRect& aFilterSubregion,
const nsTArray<bool>& aInputsAreTainted,
nsTArray<RefPtr<SourceSurface>>& aInputImages)
{
const FilterPrimitiveDescription failureDescription(PrimitiveType::Empty);
const SVGNumberList &kernelMatrix =
mNumberListAttributes[KERNELMATRIX].GetAnimValue();
uint32_t kmLength = kernelMatrix.Length();
int32_t orderX = mIntegerPairAttributes[ORDER].GetAnimValue(nsSVGIntegerPair::eFirst);
int32_t orderY = mIntegerPairAttributes[ORDER].GetAnimValue(nsSVGIntegerPair::eSecond);
if (orderX <= 0 || orderY <= 0 ||
static_cast<uint32_t>(orderX * orderY) != kmLength) {
return failureDescription;
}
int32_t targetX, targetY;
GetAnimatedIntegerValues(&targetX, &targetY, nullptr);
if (mIntegerAttributes[TARGET_X].IsExplicitlySet()) {
if (targetX < 0 || targetX >= orderX)
return failureDescription;
} else {
targetX = orderX / 2;
}
if (mIntegerAttributes[TARGET_Y].IsExplicitlySet()) {
if (targetY < 0 || targetY >= orderY)
return failureDescription;
} else {
targetY = orderY / 2;
}
if (orderX > NS_SVG_OFFSCREEN_MAX_DIMENSION ||
orderY > NS_SVG_OFFSCREEN_MAX_DIMENSION)
return failureDescription;
UniquePtr<float[]> kernel = MakeUniqueFallible<float[]>(orderX * orderY);
if (!kernel)
return failureDescription;
for (uint32_t i = 0; i < kmLength; i++) {
kernel[kmLength - 1 - i] = kernelMatrix[i];
}
float divisor;
if (mNumberAttributes[DIVISOR].IsExplicitlySet()) {
divisor = mNumberAttributes[DIVISOR].GetAnimValue();
if (divisor == 0)
return failureDescription;
} else {
divisor = kernel[0];
for (uint32_t i = 1; i < kmLength; i++)
divisor += kernel[i];
if (divisor == 0)
divisor = 1;
}
uint32_t edgeMode = mEnumAttributes[EDGEMODE].GetAnimValue();
bool preserveAlpha = mBooleanAttributes[PRESERVEALPHA].GetAnimValue();
float bias = mNumberAttributes[BIAS].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#feConvolveMatrixElementKernelUnitLengthAttribute
return failureDescription;
}
FilterPrimitiveDescription descr(PrimitiveType::ConvolveMatrix);
AttributeMap& atts = descr.Attributes();
atts.Set(eConvolveMatrixKernelSize, IntSize(orderX, orderY));
atts.Set(eConvolveMatrixKernelMatrix, &kernelMatrix[0], kmLength);
atts.Set(eConvolveMatrixDivisor, divisor);
atts.Set(eConvolveMatrixBias, bias);
atts.Set(eConvolveMatrixTarget, IntPoint(targetX, targetY));
atts.Set(eConvolveMatrixEdgeMode, edgeMode);
atts.Set(eConvolveMatrixKernelUnitLength, kernelUnitLength);
atts.Set(eConvolveMatrixPreserveAlpha, preserveAlpha);
return descr;
}
bool
SVGFEConvolveMatrixElement::AttributeAffectsRendering(int32_t aNameSpaceID,
nsAtom* aAttribute) const
{
return SVGFEConvolveMatrixElementBase::AttributeAffectsRendering(aNameSpaceID, aAttribute) ||
(aNameSpaceID == kNameSpaceID_None &&
(aAttribute == nsGkAtoms::in ||
aAttribute == nsGkAtoms::divisor ||
aAttribute == nsGkAtoms::bias ||
aAttribute == nsGkAtoms::kernelUnitLength ||
aAttribute == nsGkAtoms::targetX ||
aAttribute == nsGkAtoms::targetY ||
aAttribute == nsGkAtoms::order ||
aAttribute == nsGkAtoms::preserveAlpha||
aAttribute == nsGkAtoms::edgeMode ||
aAttribute == nsGkAtoms::kernelMatrix));
}
//----------------------------------------------------------------------
// nsSVGElement methods
nsSVGElement::NumberAttributesInfo
SVGFEConvolveMatrixElement::GetNumberInfo()
{
return NumberAttributesInfo(mNumberAttributes, sNumberInfo,
ArrayLength(sNumberInfo));
}
nsSVGElement::NumberPairAttributesInfo
SVGFEConvolveMatrixElement::GetNumberPairInfo()
{
return NumberPairAttributesInfo(mNumberPairAttributes, sNumberPairInfo,
ArrayLength(sNumberPairInfo));
}
nsSVGElement::IntegerAttributesInfo
SVGFEConvolveMatrixElement::GetIntegerInfo()
{
return IntegerAttributesInfo(mIntegerAttributes, sIntegerInfo,
ArrayLength(sIntegerInfo));
}
nsSVGElement::IntegerPairAttributesInfo
SVGFEConvolveMatrixElement::GetIntegerPairInfo()
{
return IntegerPairAttributesInfo(mIntegerPairAttributes, sIntegerPairInfo,
ArrayLength(sIntegerPairInfo));
}
nsSVGElement::BooleanAttributesInfo
SVGFEConvolveMatrixElement::GetBooleanInfo()
{
return BooleanAttributesInfo(mBooleanAttributes, sBooleanInfo,
ArrayLength(sBooleanInfo));
}
nsSVGElement::EnumAttributesInfo
SVGFEConvolveMatrixElement::GetEnumInfo()
{
return EnumAttributesInfo(mEnumAttributes, sEnumInfo,
ArrayLength(sEnumInfo));
}
nsSVGElement::StringAttributesInfo
SVGFEConvolveMatrixElement::GetStringInfo()
{
return StringAttributesInfo(mStringAttributes, sStringInfo,
ArrayLength(sStringInfo));
}
nsSVGElement::NumberListAttributesInfo
SVGFEConvolveMatrixElement::GetNumberListInfo()
{
return NumberListAttributesInfo(mNumberListAttributes, sNumberListInfo,
ArrayLength(sNumberListInfo));
}
} // namespace dom
} // namespace mozilla