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Mypal/dom/svg/SVGMarkerElement.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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/ArrayUtils.h"
#include "nsGkAtoms.h"
#include "nsCOMPtr.h"
#include "SVGAnimatedPreserveAspectRatio.h"
#include "nsError.h"
#include "mozilla/dom/SVGAngle.h"
#include "mozilla/dom/SVGMarkerElement.h"
#include "mozilla/dom/SVGMarkerElementBinding.h"
#include "mozilla/Preferences.h"
#include "mozilla/gfx/Matrix.h"
#include "mozilla/FloatingPoint.h"
#include "SVGContentUtils.h"
using namespace mozilla::gfx;
NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT(Marker)
namespace mozilla {
namespace dom {
JSObject*
SVGMarkerElement::WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto)
{
return SVGMarkerElementBinding::Wrap(aCx, this, aGivenProto);
}
nsSVGElement::LengthInfo SVGMarkerElement::sLengthInfo[4] =
{
{ &nsGkAtoms::refX, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::X },
{ &nsGkAtoms::refY, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::Y },
{ &nsGkAtoms::markerWidth, 3, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::X },
{ &nsGkAtoms::markerHeight, 3, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::Y },
};
nsSVGEnumMapping SVGMarkerElement::sUnitsMap[] = {
{&nsGkAtoms::strokeWidth, SVG_MARKERUNITS_STROKEWIDTH},
{&nsGkAtoms::userSpaceOnUse, SVG_MARKERUNITS_USERSPACEONUSE},
{nullptr, 0}
};
nsSVGElement::EnumInfo SVGMarkerElement::sEnumInfo[1] =
{
{ &nsGkAtoms::markerUnits,
sUnitsMap,
SVG_MARKERUNITS_STROKEWIDTH
}
};
nsSVGElement::AngleInfo SVGMarkerElement::sAngleInfo[1] =
{
{ &nsGkAtoms::orient, 0, SVG_ANGLETYPE_UNSPECIFIED }
};
//----------------------------------------------------------------------
// Implementation
nsresult
nsSVGOrientType::SetBaseValue(uint16_t aValue,
nsSVGElement *aSVGElement)
{
if (aValue == SVG_MARKER_ORIENT_AUTO_START_REVERSE &&
!SVGMarkerElement::MarkerImprovementsPrefEnabled()) {
return NS_ERROR_DOM_SYNTAX_ERR;
}
if (aValue == SVG_MARKER_ORIENT_AUTO ||
aValue == SVG_MARKER_ORIENT_ANGLE ||
aValue == SVG_MARKER_ORIENT_AUTO_START_REVERSE) {
SetBaseValue(aValue);
aSVGElement->SetAttr(
kNameSpaceID_None, nsGkAtoms::orient, nullptr,
(aValue == SVG_MARKER_ORIENT_AUTO ?
NS_LITERAL_STRING("auto") :
aValue == SVG_MARKER_ORIENT_ANGLE ?
NS_LITERAL_STRING("0") :
NS_LITERAL_STRING("auto-start-reverse")),
true);
return NS_OK;
}
return NS_ERROR_DOM_SYNTAX_ERR;
}
already_AddRefed<SVGAnimatedEnumeration>
nsSVGOrientType::ToDOMAnimatedEnum(nsSVGElement *aSVGElement)
{
RefPtr<SVGAnimatedEnumeration> toReturn =
new DOMAnimatedEnum(this, aSVGElement);
return toReturn.forget();
}
SVGMarkerElement::SVGMarkerElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
: SVGMarkerElementBase(aNodeInfo), mCoordCtx(nullptr)
{
}
//----------------------------------------------------------------------
// nsIDOMNode methods
NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGMarkerElement)
//----------------------------------------------------------------------
already_AddRefed<SVGAnimatedRect>
SVGMarkerElement::ViewBox()
{
return mViewBox.ToSVGAnimatedRect(this);
}
already_AddRefed<DOMSVGAnimatedPreserveAspectRatio>
SVGMarkerElement::PreserveAspectRatio()
{
return mPreserveAspectRatio.ToDOMAnimatedPreserveAspectRatio(this);
}
//----------------------------------------------------------------------
already_AddRefed<SVGAnimatedLength>
SVGMarkerElement::RefX()
{
return mLengthAttributes[REFX].ToDOMAnimatedLength(this);
}
already_AddRefed<SVGAnimatedLength>
SVGMarkerElement::RefY()
{
return mLengthAttributes[REFY].ToDOMAnimatedLength(this);
}
already_AddRefed<SVGAnimatedEnumeration>
SVGMarkerElement::MarkerUnits()
{
return mEnumAttributes[MARKERUNITS].ToDOMAnimatedEnum(this);
}
already_AddRefed<SVGAnimatedLength>
SVGMarkerElement::MarkerWidth()
{
return mLengthAttributes[MARKERWIDTH].ToDOMAnimatedLength(this);
}
already_AddRefed<SVGAnimatedLength>
SVGMarkerElement::MarkerHeight()
{
return mLengthAttributes[MARKERHEIGHT].ToDOMAnimatedLength(this);
}
already_AddRefed<SVGAnimatedEnumeration>
SVGMarkerElement::OrientType()
{
return mOrientType.ToDOMAnimatedEnum(this);
}
already_AddRefed<SVGAnimatedAngle>
SVGMarkerElement::OrientAngle()
{
return mAngleAttributes[ORIENT].ToDOMAnimatedAngle(this);
}
void SVGMarkerElement::SetOrientToAuto()
{
SetAttr(kNameSpaceID_None, nsGkAtoms::orient, nullptr,
NS_LITERAL_STRING("auto"), true);
}
void
SVGMarkerElement::SetOrientToAngle(SVGAngle& angle, ErrorResult& rv)
{
float f = angle.Value();
if (!IsFinite(f)) {
rv.Throw(NS_ERROR_DOM_SVG_WRONG_TYPE_ERR);
return;
}
mOrientType.SetBaseValue(SVG_MARKER_ORIENT_ANGLE);
mAngleAttributes[ORIENT].SetBaseValue(f, this, true);
}
//----------------------------------------------------------------------
// nsIContent methods
NS_IMETHODIMP_(bool)
SVGMarkerElement::IsAttributeMapped(const nsIAtom* name) const
{
static const MappedAttributeEntry* const map[] = {
sFEFloodMap,
sFiltersMap,
sFontSpecificationMap,
sGradientStopMap,
sLightingEffectsMap,
sMarkersMap,
sTextContentElementsMap,
sViewportsMap,
sColorMap,
sFillStrokeMap,
sGraphicsMap
};
return FindAttributeDependence(name, map) ||
SVGMarkerElementBase::IsAttributeMapped(name);
}
//----------------------------------------------------------------------
// nsSVGElement methods
bool
SVGMarkerElement::ParseAttribute(int32_t aNameSpaceID, nsIAtom* aName,
const nsAString& aValue,
nsAttrValue& aResult)
{
if (aNameSpaceID == kNameSpaceID_None && aName == nsGkAtoms::orient) {
if (aValue.EqualsLiteral("auto")) {
mOrientType.SetBaseValue(SVG_MARKER_ORIENT_AUTO);
aResult.SetTo(aValue);
mAngleAttributes[ORIENT].SetBaseValue(0.f, this, false);
return true;
}
if (aValue.EqualsLiteral("auto-start-reverse") &&
MarkerImprovementsPrefEnabled()) {
mOrientType.SetBaseValue(SVG_MARKER_ORIENT_AUTO_START_REVERSE);
aResult.SetTo(aValue);
mAngleAttributes[ORIENT].SetBaseValue(0.f, this, false);
return true;
}
mOrientType.SetBaseValue(SVG_MARKER_ORIENT_ANGLE);
}
return SVGMarkerElementBase::ParseAttribute(aNameSpaceID, aName,
aValue, aResult);
}
nsresult
SVGMarkerElement::UnsetAttr(int32_t aNamespaceID, nsIAtom* aName,
bool aNotify)
{
if (aNamespaceID == kNameSpaceID_None) {
if (aName == nsGkAtoms::orient) {
mOrientType.SetBaseValue(SVG_MARKER_ORIENT_ANGLE);
}
}
return nsSVGElement::UnsetAttr(aNamespaceID, aName, aNotify);
}
//----------------------------------------------------------------------
// nsSVGElement methods
void
SVGMarkerElement::SetParentCoordCtxProvider(SVGSVGElement *aContext)
{
mCoordCtx = aContext;
mViewBoxToViewportTransform = nullptr;
}
/* virtual */ bool
SVGMarkerElement::HasValidDimensions() const
{
return (!mLengthAttributes[MARKERWIDTH].IsExplicitlySet() ||
mLengthAttributes[MARKERWIDTH].GetAnimValInSpecifiedUnits() > 0) &&
(!mLengthAttributes[MARKERHEIGHT].IsExplicitlySet() ||
mLengthAttributes[MARKERHEIGHT].GetAnimValInSpecifiedUnits() > 0);
}
nsSVGElement::LengthAttributesInfo
SVGMarkerElement::GetLengthInfo()
{
return LengthAttributesInfo(mLengthAttributes, sLengthInfo,
ArrayLength(sLengthInfo));
}
nsSVGElement::AngleAttributesInfo
SVGMarkerElement::GetAngleInfo()
{
return AngleAttributesInfo(mAngleAttributes, sAngleInfo,
ArrayLength(sAngleInfo));
}
nsSVGElement::EnumAttributesInfo
SVGMarkerElement::GetEnumInfo()
{
return EnumAttributesInfo(mEnumAttributes, sEnumInfo,
ArrayLength(sEnumInfo));
}
nsSVGViewBox *
SVGMarkerElement::GetViewBox()
{
return &mViewBox;
}
SVGAnimatedPreserveAspectRatio *
SVGMarkerElement::GetPreserveAspectRatio()
{
return &mPreserveAspectRatio;
}
//----------------------------------------------------------------------
// public helpers
gfx::Matrix
SVGMarkerElement::GetMarkerTransform(float aStrokeWidth,
float aX, float aY, float aAutoAngle,
bool aIsStart)
{
float scale = mEnumAttributes[MARKERUNITS].GetAnimValue() ==
SVG_MARKERUNITS_STROKEWIDTH ? aStrokeWidth : 1.0f;
float angle;
switch (mOrientType.GetAnimValueInternal()) {
case SVG_MARKER_ORIENT_AUTO:
angle = aAutoAngle;
break;
case SVG_MARKER_ORIENT_AUTO_START_REVERSE:
angle = aAutoAngle + (aIsStart ? M_PI : 0.0f);
break;
default: // SVG_MARKER_ORIENT_ANGLE
angle = mAngleAttributes[ORIENT].GetAnimValue() * M_PI / 180.0f;
break;
}
return gfx::Matrix(cos(angle) * scale, sin(angle) * scale,
-sin(angle) * scale, cos(angle) * scale,
aX, aY);
}
nsSVGViewBoxRect
SVGMarkerElement::GetViewBoxRect()
{
if (mViewBox.HasRect()) {
return mViewBox.GetAnimValue();
}
return nsSVGViewBoxRect(
0, 0,
mLengthAttributes[MARKERWIDTH].GetAnimValue(mCoordCtx),
mLengthAttributes[MARKERHEIGHT].GetAnimValue(mCoordCtx));
}
gfx::Matrix
SVGMarkerElement::GetViewBoxTransform()
{
if (!mViewBoxToViewportTransform) {
float viewportWidth =
mLengthAttributes[MARKERWIDTH].GetAnimValue(mCoordCtx);
float viewportHeight =
mLengthAttributes[MARKERHEIGHT].GetAnimValue(mCoordCtx);
nsSVGViewBoxRect viewbox = GetViewBoxRect();
MOZ_ASSERT(viewbox.width > 0.0f && viewbox.height > 0.0f,
"Rendering should be disabled");
gfx::Matrix viewBoxTM =
SVGContentUtils::GetViewBoxTransform(viewportWidth, viewportHeight,
viewbox.x, viewbox.y,
viewbox.width, viewbox.height,
mPreserveAspectRatio);
float refX = mLengthAttributes[REFX].GetAnimValue(mCoordCtx);
float refY = mLengthAttributes[REFY].GetAnimValue(mCoordCtx);
gfx::Point ref = viewBoxTM.TransformPoint(gfx::Point(refX, refY));
Matrix TM = viewBoxTM;
TM.PostTranslate(-ref.x, -ref.y);
mViewBoxToViewportTransform = new gfx::Matrix(TM);
}
return *mViewBoxToViewportTransform;
}
/* static */ bool
SVGMarkerElement::MarkerImprovementsPrefEnabled()
{
return Preferences::GetBool("svg.marker-improvements.enabled", false);
}
} // namespace dom
} // namespace mozilla
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