зеркало из https://github.com/mozilla/gecko-dev.git
608 строки
23 KiB
C++
608 строки
23 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/. */
|
|
|
|
// Main header first:
|
|
#include "SVGGradientFrame.h"
|
|
#include <algorithm>
|
|
|
|
// Keep others in (case-insensitive) order:
|
|
#include "AutoReferenceChainGuard.h"
|
|
#include "gfxPattern.h"
|
|
#include "gfxUtils.h"
|
|
#include "mozilla/PresShell.h"
|
|
#include "mozilla/SVGObserverUtils.h"
|
|
#include "mozilla/SVGUtils.h"
|
|
#include "mozilla/dom/SVGGradientElement.h"
|
|
#include "mozilla/dom/SVGGradientElementBinding.h"
|
|
#include "mozilla/dom/SVGStopElement.h"
|
|
#include "mozilla/dom/SVGUnitTypesBinding.h"
|
|
#include "nsContentUtils.h"
|
|
#include "SVGAnimatedTransformList.h"
|
|
|
|
using namespace mozilla::dom;
|
|
using namespace mozilla::dom::SVGGradientElement_Binding;
|
|
using namespace mozilla::dom::SVGUnitTypes_Binding;
|
|
using namespace mozilla::gfx;
|
|
|
|
namespace mozilla {
|
|
|
|
//----------------------------------------------------------------------
|
|
// Implementation
|
|
|
|
SVGGradientFrame::SVGGradientFrame(ComputedStyle* aStyle,
|
|
nsPresContext* aPresContext, ClassID aID)
|
|
: SVGPaintServerFrame(aStyle, aPresContext, aID),
|
|
mSource(nullptr),
|
|
mLoopFlag(false),
|
|
mNoHRefURI(false) {}
|
|
|
|
NS_QUERYFRAME_HEAD(SVGGradientFrame)
|
|
NS_QUERYFRAME_ENTRY(SVGGradientFrame)
|
|
NS_QUERYFRAME_TAIL_INHERITING(SVGPaintServerFrame)
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsIFrame methods:
|
|
|
|
nsresult SVGGradientFrame::AttributeChanged(int32_t aNameSpaceID,
|
|
nsAtom* aAttribute,
|
|
int32_t aModType) {
|
|
if (aNameSpaceID == kNameSpaceID_None &&
|
|
(aAttribute == nsGkAtoms::gradientUnits ||
|
|
aAttribute == nsGkAtoms::gradientTransform ||
|
|
aAttribute == nsGkAtoms::spreadMethod)) {
|
|
SVGObserverUtils::InvalidateRenderingObservers(this);
|
|
} else if ((aNameSpaceID == kNameSpaceID_XLink ||
|
|
aNameSpaceID == kNameSpaceID_None) &&
|
|
aAttribute == nsGkAtoms::href) {
|
|
// Blow away our reference, if any
|
|
SVGObserverUtils::RemoveTemplateObserver(this);
|
|
mNoHRefURI = false;
|
|
// And update whoever references us
|
|
SVGObserverUtils::InvalidateRenderingObservers(this);
|
|
}
|
|
|
|
return SVGPaintServerFrame::AttributeChanged(aNameSpaceID, aAttribute,
|
|
aModType);
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
uint16_t SVGGradientFrame::GetEnumValue(uint32_t aIndex, nsIContent* aDefault) {
|
|
const SVGAnimatedEnumeration& thisEnum =
|
|
static_cast<dom::SVGGradientElement*>(GetContent())
|
|
->mEnumAttributes[aIndex];
|
|
|
|
if (thisEnum.IsExplicitlySet()) {
|
|
return thisEnum.GetAnimValue();
|
|
}
|
|
|
|
// Before we recurse, make sure we'll break reference loops and over long
|
|
// reference chains:
|
|
static int16_t sRefChainLengthCounter = AutoReferenceChainGuard::noChain;
|
|
AutoReferenceChainGuard refChainGuard(this, &mLoopFlag,
|
|
&sRefChainLengthCounter);
|
|
if (MOZ_UNLIKELY(!refChainGuard.Reference())) {
|
|
// Break reference chain
|
|
return static_cast<dom::SVGGradientElement*>(aDefault)
|
|
->mEnumAttributes[aIndex]
|
|
.GetAnimValue();
|
|
}
|
|
|
|
SVGGradientFrame* next = GetReferencedGradient();
|
|
|
|
return next ? next->GetEnumValue(aIndex, aDefault)
|
|
: static_cast<dom::SVGGradientElement*>(aDefault)
|
|
->mEnumAttributes[aIndex]
|
|
.GetAnimValue();
|
|
}
|
|
|
|
uint16_t SVGGradientFrame::GetGradientUnits() {
|
|
// This getter is called every time the others are called - maybe cache it?
|
|
return GetEnumValue(dom::SVGGradientElement::GRADIENTUNITS);
|
|
}
|
|
|
|
uint16_t SVGGradientFrame::GetSpreadMethod() {
|
|
return GetEnumValue(dom::SVGGradientElement::SPREADMETHOD);
|
|
}
|
|
|
|
SVGGradientFrame* SVGGradientFrame::GetGradientTransformFrame(
|
|
SVGGradientFrame* aDefault) {
|
|
if (!StyleDisplay()->mTransform.IsNone()) {
|
|
return this;
|
|
}
|
|
// Before we recurse, make sure we'll break reference loops and over long
|
|
// reference chains:
|
|
static int16_t sRefChainLengthCounter = AutoReferenceChainGuard::noChain;
|
|
AutoReferenceChainGuard refChainGuard(this, &mLoopFlag,
|
|
&sRefChainLengthCounter);
|
|
if (MOZ_UNLIKELY(!refChainGuard.Reference())) {
|
|
// Break reference chain
|
|
return aDefault;
|
|
}
|
|
|
|
if (SVGGradientFrame* next = GetReferencedGradient()) {
|
|
return next->GetGradientTransformFrame(aDefault);
|
|
}
|
|
return aDefault;
|
|
}
|
|
|
|
gfxMatrix SVGGradientFrame::GetGradientTransform(
|
|
nsIFrame* aSource, const gfxRect* aOverrideBounds) {
|
|
gfxMatrix bboxMatrix;
|
|
uint16_t gradientUnits = GetGradientUnits();
|
|
if (gradientUnits != SVG_UNIT_TYPE_USERSPACEONUSE) {
|
|
NS_ASSERTION(gradientUnits == SVG_UNIT_TYPE_OBJECTBOUNDINGBOX,
|
|
"Unknown gradientUnits type");
|
|
// objectBoundingBox is the default anyway
|
|
|
|
gfxRect bbox = aOverrideBounds
|
|
? *aOverrideBounds
|
|
: SVGUtils::GetBBox(
|
|
aSource, SVGUtils::eUseFrameBoundsForOuterSVG |
|
|
SVGUtils::eBBoxIncludeFillGeometry);
|
|
bboxMatrix =
|
|
gfxMatrix(bbox.Width(), 0, 0, bbox.Height(), bbox.X(), bbox.Y());
|
|
}
|
|
|
|
return bboxMatrix.PreMultiply(
|
|
SVGUtils::GetTransformMatrixInUserSpace(GetGradientTransformFrame(this)));
|
|
}
|
|
|
|
dom::SVGLinearGradientElement* SVGGradientFrame::GetLinearGradientWithLength(
|
|
uint32_t aIndex, dom::SVGLinearGradientElement* aDefault) {
|
|
// If this was a linear gradient with the required length, we would have
|
|
// already found it in SVGLinearGradientFrame::GetLinearGradientWithLength.
|
|
// Since we didn't find the length, continue looking down the chain.
|
|
|
|
// Before we recurse, make sure we'll break reference loops and over long
|
|
// reference chains:
|
|
static int16_t sRefChainLengthCounter = AutoReferenceChainGuard::noChain;
|
|
AutoReferenceChainGuard refChainGuard(this, &mLoopFlag,
|
|
&sRefChainLengthCounter);
|
|
if (MOZ_UNLIKELY(!refChainGuard.Reference())) {
|
|
// Break reference chain
|
|
return aDefault;
|
|
}
|
|
|
|
SVGGradientFrame* next = GetReferencedGradient();
|
|
return next ? next->GetLinearGradientWithLength(aIndex, aDefault) : aDefault;
|
|
}
|
|
|
|
dom::SVGRadialGradientElement* SVGGradientFrame::GetRadialGradientWithLength(
|
|
uint32_t aIndex, dom::SVGRadialGradientElement* aDefault) {
|
|
// If this was a radial gradient with the required length, we would have
|
|
// already found it in SVGRadialGradientFrame::GetRadialGradientWithLength.
|
|
// Since we didn't find the length, continue looking down the chain.
|
|
|
|
// Before we recurse, make sure we'll break reference loops and over long
|
|
// reference chains:
|
|
static int16_t sRefChainLengthCounter = AutoReferenceChainGuard::noChain;
|
|
AutoReferenceChainGuard refChainGuard(this, &mLoopFlag,
|
|
&sRefChainLengthCounter);
|
|
if (MOZ_UNLIKELY(!refChainGuard.Reference())) {
|
|
// Break reference chain
|
|
return aDefault;
|
|
}
|
|
|
|
SVGGradientFrame* next = GetReferencedGradient();
|
|
return next ? next->GetRadialGradientWithLength(aIndex, aDefault) : aDefault;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// SVGPaintServerFrame methods:
|
|
|
|
// helpers
|
|
|
|
static ColorStop GetStopInformation(const nsIFrame* aStopFrame,
|
|
float aGraphicOpacity,
|
|
float& aLastPosition) {
|
|
nsIContent* stopContent = aStopFrame->GetContent();
|
|
MOZ_ASSERT(stopContent && stopContent->IsSVGElement(nsGkAtoms::stop));
|
|
|
|
float position;
|
|
static_cast<SVGStopElement*>(stopContent)
|
|
->GetAnimatedNumberValues(&position, nullptr);
|
|
|
|
position = clamped(position, 0.0f, 1.0f);
|
|
|
|
if (position < aLastPosition) {
|
|
position = aLastPosition;
|
|
} else {
|
|
aLastPosition = position;
|
|
}
|
|
|
|
const auto* svgReset = aStopFrame->StyleSVGReset();
|
|
|
|
sRGBColor stopColor =
|
|
sRGBColor::FromABGR(svgReset->mStopColor.CalcColor(aStopFrame));
|
|
stopColor.a *= svgReset->mStopOpacity * aGraphicOpacity;
|
|
|
|
return ColorStop(position, false,
|
|
StyleAbsoluteColor::FromColor(stopColor.ToABGR()));
|
|
}
|
|
|
|
class MOZ_STACK_CLASS SVGColorStopInterpolator
|
|
: public ColorStopInterpolator<SVGColorStopInterpolator> {
|
|
public:
|
|
SVGColorStopInterpolator(
|
|
gfxPattern* aGradient, const nsTArray<ColorStop>& aStops,
|
|
const StyleColorInterpolationMethod& aStyleColorInterpolationMethod,
|
|
bool aExtendLastStop)
|
|
: ColorStopInterpolator(aStops, aStyleColorInterpolationMethod,
|
|
aExtendLastStop),
|
|
mGradient(aGradient) {}
|
|
|
|
void CreateStop(float aPosition, DeviceColor aColor) {
|
|
mGradient->AddColorStop(aPosition, aColor);
|
|
}
|
|
|
|
private:
|
|
gfxPattern* mGradient;
|
|
};
|
|
|
|
already_AddRefed<gfxPattern> SVGGradientFrame::GetPaintServerPattern(
|
|
nsIFrame* aSource, const DrawTarget* aDrawTarget,
|
|
const gfxMatrix& aContextMatrix, StyleSVGPaint nsStyleSVG::*aFillOrStroke,
|
|
float aGraphicOpacity, imgDrawingParams& aImgParams,
|
|
const gfxRect* aOverrideBounds) {
|
|
uint16_t gradientUnits = GetGradientUnits();
|
|
MOZ_ASSERT(gradientUnits == SVG_UNIT_TYPE_OBJECTBOUNDINGBOX ||
|
|
gradientUnits == SVG_UNIT_TYPE_USERSPACEONUSE);
|
|
if (gradientUnits == SVG_UNIT_TYPE_USERSPACEONUSE) {
|
|
// Set mSource for this consumer.
|
|
// If this gradient is applied to text, our caller will be the glyph, which
|
|
// is not an element, so we need to get the parent
|
|
mSource = aSource->IsTextFrame() ? aSource->GetParent() : aSource;
|
|
}
|
|
|
|
AutoTArray<ColorStop, 8> stops;
|
|
GetStops(&stops, aGraphicOpacity);
|
|
|
|
uint32_t nStops = stops.Length();
|
|
|
|
// SVG specification says that no stops should be treated like
|
|
// the corresponding fill or stroke had "none" specified.
|
|
if (nStops == 0) {
|
|
return do_AddRef(new gfxPattern(DeviceColor()));
|
|
}
|
|
|
|
if (nStops == 1 || GradientVectorLengthIsZero()) {
|
|
// The gradient paints a single colour, using the stop-color of the last
|
|
// gradient step if there are more than one.
|
|
return do_AddRef(new gfxPattern(ToDeviceColor(stops.LastElement().mColor)));
|
|
}
|
|
|
|
// Get the transform list (if there is one). We do this after the returns
|
|
// above since this call can be expensive when "gradientUnits" is set to
|
|
// "objectBoundingBox" (since that requiring a GetBBox() call).
|
|
gfxMatrix patternMatrix = GetGradientTransform(aSource, aOverrideBounds);
|
|
if (patternMatrix.IsSingular()) {
|
|
return nullptr;
|
|
}
|
|
|
|
// revert any vector effect transform so that the gradient appears unchanged
|
|
if (aFillOrStroke == &nsStyleSVG::mStroke) {
|
|
gfxMatrix userToOuterSVG;
|
|
if (SVGUtils::GetNonScalingStrokeTransform(aSource, &userToOuterSVG)) {
|
|
patternMatrix *= userToOuterSVG;
|
|
}
|
|
}
|
|
|
|
if (!patternMatrix.Invert()) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<gfxPattern> gradient = CreateGradient();
|
|
if (!gradient) {
|
|
return nullptr;
|
|
}
|
|
|
|
uint16_t aSpread = GetSpreadMethod();
|
|
if (aSpread == SVG_SPREADMETHOD_PAD)
|
|
gradient->SetExtend(ExtendMode::CLAMP);
|
|
else if (aSpread == SVG_SPREADMETHOD_REFLECT)
|
|
gradient->SetExtend(ExtendMode::REFLECT);
|
|
else if (aSpread == SVG_SPREADMETHOD_REPEAT)
|
|
gradient->SetExtend(ExtendMode::REPEAT);
|
|
|
|
gradient->SetMatrix(patternMatrix);
|
|
|
|
if (StyleSVG()->mColorInterpolation == StyleColorInterpolation::Linearrgb) {
|
|
static constexpr auto interpolationMethod = StyleColorInterpolationMethod{
|
|
StyleColorSpace::SrgbLinear, StyleHueInterpolationMethod::Shorter};
|
|
SVGColorStopInterpolator interpolator(gradient, stops, interpolationMethod,
|
|
false);
|
|
interpolator.CreateStops();
|
|
} else {
|
|
// setup standard sRGB stops
|
|
for (const auto& stop : stops) {
|
|
gradient->AddColorStop(stop.mPosition, ToDeviceColor(stop.mColor));
|
|
}
|
|
}
|
|
|
|
return gradient.forget();
|
|
}
|
|
|
|
// Private (helper) methods
|
|
|
|
SVGGradientFrame* SVGGradientFrame::GetReferencedGradient() {
|
|
if (mNoHRefURI) {
|
|
return nullptr;
|
|
}
|
|
|
|
auto GetHref = [this](nsAString& aHref) {
|
|
dom::SVGGradientElement* grad =
|
|
static_cast<dom::SVGGradientElement*>(this->GetContent());
|
|
if (grad->mStringAttributes[dom::SVGGradientElement::HREF]
|
|
.IsExplicitlySet()) {
|
|
grad->mStringAttributes[dom::SVGGradientElement::HREF].GetAnimValue(aHref,
|
|
grad);
|
|
} else {
|
|
grad->mStringAttributes[dom::SVGGradientElement::XLINK_HREF].GetAnimValue(
|
|
aHref, grad);
|
|
}
|
|
this->mNoHRefURI = aHref.IsEmpty();
|
|
};
|
|
|
|
// We don't call SVGObserverUtils::RemoveTemplateObserver and set
|
|
// `mNoHRefURI = false` on failure since we want to be invalidated if the ID
|
|
// specified by our href starts resolving to a different/valid element.
|
|
|
|
return do_QueryFrame(SVGObserverUtils::GetAndObserveTemplate(this, GetHref));
|
|
}
|
|
|
|
void SVGGradientFrame::GetStops(nsTArray<ColorStop>* aStops,
|
|
float aGraphicOpacity) {
|
|
float lastPosition = 0.0f;
|
|
for (const auto* stopFrame : mFrames) {
|
|
if (stopFrame->IsSVGStopFrame()) {
|
|
aStops->AppendElement(
|
|
GetStopInformation(stopFrame, aGraphicOpacity, lastPosition));
|
|
}
|
|
}
|
|
if (!aStops->IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
// Our gradient element doesn't have stops - try to "inherit" them
|
|
|
|
// Before we recurse, make sure we'll break reference loops and over long
|
|
// reference chains:
|
|
static int16_t sRefChainLengthCounter = AutoReferenceChainGuard::noChain;
|
|
AutoReferenceChainGuard refChainGuard(this, &mLoopFlag,
|
|
&sRefChainLengthCounter);
|
|
if (MOZ_UNLIKELY(!refChainGuard.Reference())) {
|
|
// Break reference chain
|
|
return;
|
|
}
|
|
|
|
SVGGradientFrame* next = GetReferencedGradient();
|
|
if (next) {
|
|
next->GetStops(aStops, aGraphicOpacity);
|
|
}
|
|
}
|
|
|
|
// -------------------------------------------------------------------------
|
|
// Linear Gradients
|
|
// -------------------------------------------------------------------------
|
|
|
|
NS_QUERYFRAME_HEAD(SVGLinearGradientFrame)
|
|
NS_QUERYFRAME_ENTRY(SVGLinearGradientFrame)
|
|
NS_QUERYFRAME_TAIL_INHERITING(SVGGradientFrame)
|
|
|
|
#ifdef DEBUG
|
|
void SVGLinearGradientFrame::Init(nsIContent* aContent,
|
|
nsContainerFrame* aParent,
|
|
nsIFrame* aPrevInFlow) {
|
|
NS_ASSERTION(aContent->IsSVGElement(nsGkAtoms::linearGradient),
|
|
"Content is not an SVG linearGradient");
|
|
|
|
SVGGradientFrame::Init(aContent, aParent, aPrevInFlow);
|
|
}
|
|
#endif /* DEBUG */
|
|
|
|
nsresult SVGLinearGradientFrame::AttributeChanged(int32_t aNameSpaceID,
|
|
nsAtom* aAttribute,
|
|
int32_t aModType) {
|
|
if (aNameSpaceID == kNameSpaceID_None &&
|
|
(aAttribute == nsGkAtoms::x1 || aAttribute == nsGkAtoms::y1 ||
|
|
aAttribute == nsGkAtoms::x2 || aAttribute == nsGkAtoms::y2)) {
|
|
SVGObserverUtils::InvalidateRenderingObservers(this);
|
|
}
|
|
|
|
return SVGGradientFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
float SVGLinearGradientFrame::GetLengthValue(uint32_t aIndex) {
|
|
dom::SVGLinearGradientElement* lengthElement = GetLinearGradientWithLength(
|
|
aIndex, static_cast<dom::SVGLinearGradientElement*>(GetContent()));
|
|
// We passed in mContent as a fallback, so, assuming mContent is non-null, the
|
|
// return value should also be non-null.
|
|
MOZ_ASSERT(lengthElement,
|
|
"Got unexpected null element from GetLinearGradientWithLength");
|
|
const SVGAnimatedLength& length = lengthElement->mLengthAttributes[aIndex];
|
|
|
|
// Object bounding box units are handled by setting the appropriate
|
|
// transform in GetGradientTransform, but we need to handle user
|
|
// space units as part of the individual Get* routines. Fixes 323669.
|
|
|
|
uint16_t gradientUnits = GetGradientUnits();
|
|
if (gradientUnits == SVG_UNIT_TYPE_USERSPACEONUSE) {
|
|
return SVGUtils::UserSpace(mSource, &length);
|
|
}
|
|
|
|
NS_ASSERTION(gradientUnits == SVG_UNIT_TYPE_OBJECTBOUNDINGBOX,
|
|
"Unknown gradientUnits type");
|
|
|
|
return length.GetAnimValueWithZoom(static_cast<SVGViewportElement*>(nullptr));
|
|
}
|
|
|
|
dom::SVGLinearGradientElement*
|
|
SVGLinearGradientFrame::GetLinearGradientWithLength(
|
|
uint32_t aIndex, dom::SVGLinearGradientElement* aDefault) {
|
|
dom::SVGLinearGradientElement* thisElement =
|
|
static_cast<dom::SVGLinearGradientElement*>(GetContent());
|
|
const SVGAnimatedLength& length = thisElement->mLengthAttributes[aIndex];
|
|
|
|
if (length.IsExplicitlySet()) {
|
|
return thisElement;
|
|
}
|
|
|
|
return SVGGradientFrame::GetLinearGradientWithLength(aIndex, aDefault);
|
|
}
|
|
|
|
bool SVGLinearGradientFrame::GradientVectorLengthIsZero() {
|
|
return GetLengthValue(dom::SVGLinearGradientElement::ATTR_X1) ==
|
|
GetLengthValue(dom::SVGLinearGradientElement::ATTR_X2) &&
|
|
GetLengthValue(dom::SVGLinearGradientElement::ATTR_Y1) ==
|
|
GetLengthValue(dom::SVGLinearGradientElement::ATTR_Y2);
|
|
}
|
|
|
|
already_AddRefed<gfxPattern> SVGLinearGradientFrame::CreateGradient() {
|
|
float x1 = GetLengthValue(dom::SVGLinearGradientElement::ATTR_X1);
|
|
float y1 = GetLengthValue(dom::SVGLinearGradientElement::ATTR_Y1);
|
|
float x2 = GetLengthValue(dom::SVGLinearGradientElement::ATTR_X2);
|
|
float y2 = GetLengthValue(dom::SVGLinearGradientElement::ATTR_Y2);
|
|
|
|
return do_AddRef(new gfxPattern(x1, y1, x2, y2));
|
|
}
|
|
|
|
// -------------------------------------------------------------------------
|
|
// Radial Gradients
|
|
// -------------------------------------------------------------------------
|
|
|
|
NS_QUERYFRAME_HEAD(SVGRadialGradientFrame)
|
|
NS_QUERYFRAME_ENTRY(SVGRadialGradientFrame)
|
|
NS_QUERYFRAME_TAIL_INHERITING(SVGGradientFrame)
|
|
|
|
#ifdef DEBUG
|
|
void SVGRadialGradientFrame::Init(nsIContent* aContent,
|
|
nsContainerFrame* aParent,
|
|
nsIFrame* aPrevInFlow) {
|
|
NS_ASSERTION(aContent->IsSVGElement(nsGkAtoms::radialGradient),
|
|
"Content is not an SVG radialGradient");
|
|
|
|
SVGGradientFrame::Init(aContent, aParent, aPrevInFlow);
|
|
}
|
|
#endif /* DEBUG */
|
|
|
|
nsresult SVGRadialGradientFrame::AttributeChanged(int32_t aNameSpaceID,
|
|
nsAtom* aAttribute,
|
|
int32_t aModType) {
|
|
if (aNameSpaceID == kNameSpaceID_None &&
|
|
(aAttribute == nsGkAtoms::r || aAttribute == nsGkAtoms::cx ||
|
|
aAttribute == nsGkAtoms::cy || aAttribute == nsGkAtoms::fx ||
|
|
aAttribute == nsGkAtoms::fy)) {
|
|
SVGObserverUtils::InvalidateRenderingObservers(this);
|
|
}
|
|
|
|
return SVGGradientFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
float SVGRadialGradientFrame::GetLengthValue(uint32_t aIndex) {
|
|
dom::SVGRadialGradientElement* lengthElement = GetRadialGradientWithLength(
|
|
aIndex, static_cast<dom::SVGRadialGradientElement*>(GetContent()));
|
|
// We passed in mContent as a fallback, so, assuming mContent is non-null,
|
|
// the return value should also be non-null.
|
|
MOZ_ASSERT(lengthElement,
|
|
"Got unexpected null element from GetRadialGradientWithLength");
|
|
return GetLengthValueFromElement(aIndex, *lengthElement);
|
|
}
|
|
|
|
float SVGRadialGradientFrame::GetLengthValue(uint32_t aIndex,
|
|
float aDefaultValue) {
|
|
dom::SVGRadialGradientElement* lengthElement =
|
|
GetRadialGradientWithLength(aIndex, nullptr);
|
|
|
|
return lengthElement ? GetLengthValueFromElement(aIndex, *lengthElement)
|
|
: aDefaultValue;
|
|
}
|
|
|
|
float SVGRadialGradientFrame::GetLengthValueFromElement(
|
|
uint32_t aIndex, dom::SVGRadialGradientElement& aElement) {
|
|
const SVGAnimatedLength& length = aElement.mLengthAttributes[aIndex];
|
|
|
|
// Object bounding box units are handled by setting the appropriate
|
|
// transform in GetGradientTransform, but we need to handle user
|
|
// space units as part of the individual Get* routines. Fixes 323669.
|
|
|
|
uint16_t gradientUnits = GetGradientUnits();
|
|
if (gradientUnits == SVG_UNIT_TYPE_USERSPACEONUSE) {
|
|
return SVGUtils::UserSpace(mSource, &length);
|
|
}
|
|
|
|
NS_ASSERTION(gradientUnits == SVG_UNIT_TYPE_OBJECTBOUNDINGBOX,
|
|
"Unknown gradientUnits type");
|
|
|
|
return length.GetAnimValueWithZoom(static_cast<SVGViewportElement*>(nullptr));
|
|
}
|
|
|
|
dom::SVGRadialGradientElement*
|
|
SVGRadialGradientFrame::GetRadialGradientWithLength(
|
|
uint32_t aIndex, dom::SVGRadialGradientElement* aDefault) {
|
|
dom::SVGRadialGradientElement* thisElement =
|
|
static_cast<dom::SVGRadialGradientElement*>(GetContent());
|
|
const SVGAnimatedLength& length = thisElement->mLengthAttributes[aIndex];
|
|
|
|
if (length.IsExplicitlySet()) {
|
|
return thisElement;
|
|
}
|
|
|
|
return SVGGradientFrame::GetRadialGradientWithLength(aIndex, aDefault);
|
|
}
|
|
|
|
bool SVGRadialGradientFrame::GradientVectorLengthIsZero() {
|
|
float cx = GetLengthValue(dom::SVGRadialGradientElement::ATTR_CX);
|
|
float cy = GetLengthValue(dom::SVGRadialGradientElement::ATTR_CY);
|
|
float r = GetLengthValue(dom::SVGRadialGradientElement::ATTR_R);
|
|
// If fx or fy are not set, use cx/cy instead
|
|
float fx = GetLengthValue(dom::SVGRadialGradientElement::ATTR_FX, cx);
|
|
float fy = GetLengthValue(dom::SVGRadialGradientElement::ATTR_FY, cy);
|
|
float fr = GetLengthValue(dom::SVGRadialGradientElement::ATTR_FR);
|
|
return cx == fx && cy == fy && r == fr;
|
|
}
|
|
|
|
already_AddRefed<gfxPattern> SVGRadialGradientFrame::CreateGradient() {
|
|
float cx = GetLengthValue(dom::SVGRadialGradientElement::ATTR_CX);
|
|
float cy = GetLengthValue(dom::SVGRadialGradientElement::ATTR_CY);
|
|
float r = GetLengthValue(dom::SVGRadialGradientElement::ATTR_R);
|
|
// If fx or fy are not set, use cx/cy instead
|
|
float fx = GetLengthValue(dom::SVGRadialGradientElement::ATTR_FX, cx);
|
|
float fy = GetLengthValue(dom::SVGRadialGradientElement::ATTR_FY, cy);
|
|
float fr = GetLengthValue(dom::SVGRadialGradientElement::ATTR_FR);
|
|
|
|
return do_AddRef(new gfxPattern(fx, fy, fr, cx, cy, r));
|
|
}
|
|
|
|
} // namespace mozilla
|
|
|
|
// -------------------------------------------------------------------------
|
|
// Public functions
|
|
// -------------------------------------------------------------------------
|
|
|
|
nsIFrame* NS_NewSVGLinearGradientFrame(mozilla::PresShell* aPresShell,
|
|
mozilla::ComputedStyle* aStyle) {
|
|
return new (aPresShell)
|
|
mozilla::SVGLinearGradientFrame(aStyle, aPresShell->GetPresContext());
|
|
}
|
|
|
|
nsIFrame* NS_NewSVGRadialGradientFrame(mozilla::PresShell* aPresShell,
|
|
mozilla::ComputedStyle* aStyle) {
|
|
return new (aPresShell)
|
|
mozilla::SVGRadialGradientFrame(aStyle, aPresShell->GetPresContext());
|
|
}
|
|
|
|
namespace mozilla {
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(SVGLinearGradientFrame)
|
|
NS_IMPL_FRAMEARENA_HELPERS(SVGRadialGradientFrame)
|
|
|
|
} // namespace mozilla
|