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/* -*- 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/SVGFETurbulenceElement.h"
#include "mozilla/dom/SVGFETurbulenceElementBinding.h"
#include "mozilla/SVGFilterInstance.h"
NS_IMPL_NS_NEW_SVG_ELEMENT(FETurbulence)
using namespace mozilla::gfx;
namespace mozilla {
namespace dom {
// Stitch Options
static const unsigned short SVG_STITCHTYPE_STITCH = 1;
static const unsigned short SVG_STITCHTYPE_NOSTITCH = 2;
static const int32_t MAX_OCTAVES = 10;
JSObject* SVGFETurbulenceElement::WrapNode(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return SVGFETurbulenceElement_Binding::Wrap(aCx, this, aGivenProto);
}
SVGElement::NumberInfo SVGFETurbulenceElement::sNumberInfo[1] = {
{nsGkAtoms::seed, 0, false}};
SVGElement::NumberPairInfo SVGFETurbulenceElement::sNumberPairInfo[1] = {
{nsGkAtoms::baseFrequency, 0, 0}};
SVGElement::IntegerInfo SVGFETurbulenceElement::sIntegerInfo[1] = {
{nsGkAtoms::numOctaves, 1}};
SVGEnumMapping SVGFETurbulenceElement::sTypeMap[] = {
{nsGkAtoms::fractalNoise, SVG_TURBULENCE_TYPE_FRACTALNOISE},
{nsGkAtoms::turbulence, SVG_TURBULENCE_TYPE_TURBULENCE},
{nullptr, 0}};
SVGEnumMapping SVGFETurbulenceElement::sStitchTilesMap[] = {
{nsGkAtoms::stitch, SVG_STITCHTYPE_STITCH},
{nsGkAtoms::noStitch, SVG_STITCHTYPE_NOSTITCH},
{nullptr, 0}};
SVGElement::EnumInfo SVGFETurbulenceElement::sEnumInfo[2] = {
{nsGkAtoms::type, sTypeMap, SVG_TURBULENCE_TYPE_TURBULENCE},
{nsGkAtoms::stitchTiles, sStitchTilesMap, SVG_STITCHTYPE_NOSTITCH}};
SVGElement::StringInfo SVGFETurbulenceElement::sStringInfo[1] = {
{nsGkAtoms::result, kNameSpaceID_None, true}};
//----------------------------------------------------------------------
// nsINode methods
NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGFETurbulenceElement)
//----------------------------------------------------------------------
already_AddRefed<DOMSVGAnimatedNumber>
SVGFETurbulenceElement::BaseFrequencyX() {
return mNumberPairAttributes[BASE_FREQ].ToDOMAnimatedNumber(
SVGAnimatedNumberPair::eFirst, this);
}
already_AddRefed<DOMSVGAnimatedNumber>
SVGFETurbulenceElement::BaseFrequencyY() {
return mNumberPairAttributes[BASE_FREQ].ToDOMAnimatedNumber(
SVGAnimatedNumberPair::eSecond, this);
}
already_AddRefed<DOMSVGAnimatedInteger> SVGFETurbulenceElement::NumOctaves() {
return mIntegerAttributes[OCTAVES].ToDOMAnimatedInteger(this);
}
already_AddRefed<DOMSVGAnimatedNumber> SVGFETurbulenceElement::Seed() {
return mNumberAttributes[SEED].ToDOMAnimatedNumber(this);
}
already_AddRefed<DOMSVGAnimatedEnumeration>
SVGFETurbulenceElement::StitchTiles() {
return mEnumAttributes[STITCHTILES].ToDOMAnimatedEnum(this);
}
already_AddRefed<DOMSVGAnimatedEnumeration> SVGFETurbulenceElement::Type() {
return mEnumAttributes[TYPE].ToDOMAnimatedEnum(this);
}
FilterPrimitiveDescription SVGFETurbulenceElement::GetPrimitiveDescription(
SVGFilterInstance* aInstance, const IntRect& aFilterSubregion,
const nsTArray<bool>& aInputsAreTainted,
nsTArray<RefPtr<SourceSurface>>& aInputImages) {
float fX = mNumberPairAttributes[BASE_FREQ].GetAnimValue(
SVGAnimatedNumberPair::eFirst);
float fY = mNumberPairAttributes[BASE_FREQ].GetAnimValue(
SVGAnimatedNumberPair::eSecond);
float seed = mNumberAttributes[OCTAVES].GetAnimValue();
uint32_t octaves =
clamped(mIntegerAttributes[OCTAVES].GetAnimValue(), 0, MAX_OCTAVES);
uint32_t type = mEnumAttributes[TYPE].GetAnimValue();
uint16_t stitch = mEnumAttributes[STITCHTILES].GetAnimValue();
if (fX == 0 && fY == 0) {
// A base frequency of zero results in transparent black for
// type="turbulence" and in 50% alpha 50% gray for type="fractalNoise".
if (type == SVG_TURBULENCE_TYPE_TURBULENCE) {
return FilterPrimitiveDescription();
}
FloodAttributes atts;
atts.mColor = sRGBColor(0.5, 0.5, 0.5, 0.5);
return FilterPrimitiveDescription(AsVariant(std::move(atts)));
}
// We interpret the base frequency as relative to user space units. In other
// words, we consider one turbulence base period to be 1 / fX user space
// units wide and 1 / fY user space units high. We do not scale the frequency
// depending on the filter primitive region.
// We now convert the frequency from user space to filter space.
// If a frequency in user space units is zero, then it will also be zero in
// filter space. During the conversion we use a dummy period length of 1
// for those frequencies but then ignore the converted length and use 0
// for the converted frequency. This avoids division by zero.
gfxRect firstPeriodInUserSpace(0, 0, fX == 0 ? 1 : (1 / fX),
fY == 0 ? 1 : (1 / fY));
gfxRect firstPeriodInFilterSpace =
aInstance->UserSpaceToFilterSpace(firstPeriodInUserSpace);
Size frequencyInFilterSpace(
fX == 0 ? 0 : (1 / firstPeriodInFilterSpace.width),
fY == 0 ? 0 : (1 / firstPeriodInFilterSpace.height));
gfxPoint offset = firstPeriodInFilterSpace.TopLeft();
TurbulenceAttributes atts;
atts.mOffset = IntPoint::Truncate(offset.x, offset.y);
atts.mBaseFrequency = frequencyInFilterSpace;
atts.mSeed = seed;
atts.mOctaves = octaves;
atts.mStitchable = stitch == SVG_STITCHTYPE_STITCH;
atts.mType = type;
return FilterPrimitiveDescription(AsVariant(std::move(atts)));
}
bool SVGFETurbulenceElement::AttributeAffectsRendering(
int32_t aNameSpaceID, nsAtom* aAttribute) const {
return SVGFETurbulenceElementBase::AttributeAffectsRendering(aNameSpaceID,
aAttribute) ||
(aNameSpaceID == kNameSpaceID_None &&
(aAttribute == nsGkAtoms::seed ||
aAttribute == nsGkAtoms::baseFrequency ||
aAttribute == nsGkAtoms::numOctaves ||
aAttribute == nsGkAtoms::type ||
aAttribute == nsGkAtoms::stitchTiles));
}
//----------------------------------------------------------------------
// SVGElement methods
SVGElement::NumberAttributesInfo SVGFETurbulenceElement::GetNumberInfo() {
return NumberAttributesInfo(mNumberAttributes, sNumberInfo,
ArrayLength(sNumberInfo));
}
SVGElement::NumberPairAttributesInfo
SVGFETurbulenceElement::GetNumberPairInfo() {
return NumberPairAttributesInfo(mNumberPairAttributes, sNumberPairInfo,
ArrayLength(sNumberPairInfo));
}
SVGElement::IntegerAttributesInfo SVGFETurbulenceElement::GetIntegerInfo() {
return IntegerAttributesInfo(mIntegerAttributes, sIntegerInfo,
ArrayLength(sIntegerInfo));
}
SVGElement::EnumAttributesInfo SVGFETurbulenceElement::GetEnumInfo() {
return EnumAttributesInfo(mEnumAttributes, sEnumInfo, ArrayLength(sEnumInfo));
}
SVGElement::StringAttributesInfo SVGFETurbulenceElement::GetStringInfo() {
return StringAttributesInfo(mStringAttributes, sStringInfo,
ArrayLength(sStringInfo));
}
} // namespace dom
} // namespace mozilla
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