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gecko-dev
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gecko-dev/dom/svg/SVGMarkerElement.cpp

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12 KiB
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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/SVGMarkerElement.h"
#include "nsGkAtoms.h"
#include "nsCOMPtr.h"
#include "SVGAnimatedPreserveAspectRatio.h"
#include "nsError.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/dom/DOMSVGAngle.h"
#include "mozilla/dom/SVGGeometryElement.h"
#include "mozilla/dom/SVGLengthBinding.h"
#include "mozilla/dom/SVGMarkerElementBinding.h"
#include "mozilla/gfx/Matrix.h"
#include "mozilla/FloatingPoint.h"
#include "SVGContentUtils.h"
using namespace mozilla::gfx;
using namespace mozilla::dom::SVGMarkerElement_Binding;
NS_IMPL_NS_NEW_SVG_ELEMENT(Marker)
namespace mozilla {
namespace dom {
using namespace SVGAngle_Binding;
JSObject* SVGMarkerElement::WrapNode(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return SVGMarkerElement_Binding::Wrap(aCx, this, aGivenProto);
}
SVGElement::LengthInfo SVGMarkerElement::sLengthInfo[4] = {
{nsGkAtoms::refX, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
SVGContentUtils::X},
{nsGkAtoms::refY, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
SVGContentUtils::Y},
{nsGkAtoms::markerWidth, 3, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
SVGContentUtils::X},
{nsGkAtoms::markerHeight, 3, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
SVGContentUtils::Y},
};
SVGEnumMapping SVGMarkerElement::sUnitsMap[] = {
{nsGkAtoms::strokeWidth, SVG_MARKERUNITS_STROKEWIDTH},
{nsGkAtoms::userSpaceOnUse, SVG_MARKERUNITS_USERSPACEONUSE},
{nullptr, 0}};
SVGElement::EnumInfo SVGMarkerElement::sEnumInfo[1] = {
{nsGkAtoms::markerUnits, sUnitsMap, SVG_MARKERUNITS_STROKEWIDTH}};
SVGElement::AngleInfo SVGMarkerElement::sAngleInfo[1] = {
{nsGkAtoms::orient, 0, SVG_ANGLETYPE_UNSPECIFIED}};
//----------------------------------------------------------------------
// Implementation
nsresult nsSVGOrientType::SetBaseValue(uint16_t aValue,
SVGElement* aSVGElement) {
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_TYPE_ERR;
}
already_AddRefed<SVGAnimatedEnumeration> nsSVGOrientType::ToDOMAnimatedEnum(
SVGElement* aSVGElement) {
RefPtr<SVGAnimatedEnumeration> toReturn =
new DOMAnimatedEnum(this, aSVGElement);
return toReturn.forget();
}
SVGMarkerElement::SVGMarkerElement(
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
: SVGMarkerElementBase(std::move(aNodeInfo)), mCoordCtx(nullptr) {}
//----------------------------------------------------------------------
// nsINode 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(DOMSVGAngle& 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, angle.UnitType(), this, true);
}
//----------------------------------------------------------------------
// nsIContent methods
NS_IMETHODIMP_(bool)
SVGMarkerElement::IsAttributeMapped(const nsAtom* 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);
}
//----------------------------------------------------------------------
// SVGElement methods
bool SVGMarkerElement::ParseAttribute(int32_t aNameSpaceID, nsAtom* aName,
const nsAString& aValue,
nsIPrincipal* aMaybeScriptedPrincipal,
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, SVG_ANGLETYPE_UNSPECIFIED,
this, false);
return true;
}
if (aValue.EqualsLiteral("auto-start-reverse")) {
mOrientType.SetBaseValue(SVG_MARKER_ORIENT_AUTO_START_REVERSE);
aResult.SetTo(aValue);
mAngleAttributes[ORIENT].SetBaseValue(0.f, SVG_ANGLETYPE_UNSPECIFIED,
this, false);
return true;
}
mOrientType.SetBaseValue(SVG_MARKER_ORIENT_ANGLE);
}
return SVGMarkerElementBase::ParseAttribute(aNameSpaceID, aName, aValue,
aMaybeScriptedPrincipal, aResult);
}
nsresult SVGMarkerElement::AfterSetAttr(int32_t aNamespaceID, nsAtom* aName,
const nsAttrValue* aValue,
const nsAttrValue* aOldValue,
nsIPrincipal* aMaybeScriptedPrincipal,
bool aNotify) {
if (!aValue && aNamespaceID == kNameSpaceID_None &&
aName == nsGkAtoms::orient) {
mOrientType.SetBaseValue(SVG_MARKER_ORIENT_ANGLE);
}
return SVGMarkerElementBase::AfterSetAttr(
aNamespaceID, aName, aValue, aOldValue, aMaybeScriptedPrincipal, aNotify);
}
//----------------------------------------------------------------------
// SVGElement methods
void SVGMarkerElement::SetParentCoordCtxProvider(SVGViewportElement* 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);
}
SVGElement::LengthAttributesInfo SVGMarkerElement::GetLengthInfo() {
return LengthAttributesInfo(mLengthAttributes, sLengthInfo,
ArrayLength(sLengthInfo));
}
SVGElement::AngleAttributesInfo SVGMarkerElement::GetAngleInfo() {
return AngleAttributesInfo(mAngleAttributes, sAngleInfo,
ArrayLength(sAngleInfo));
}
SVGElement::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,
const nsSVGMark& aMark) {
float scale =
mEnumAttributes[MARKERUNITS].GetAnimValue() == SVG_MARKERUNITS_STROKEWIDTH
? aStrokeWidth
: 1.0f;
float angle;
switch (mOrientType.GetAnimValueInternal()) {
case SVG_MARKER_ORIENT_AUTO:
angle = aMark.angle;
break;
case SVG_MARKER_ORIENT_AUTO_START_REVERSE:
angle = aMark.angle + (aMark.type == nsSVGMark::eStart ? 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, aMark.x, aMark.y);
}
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;
}
} // namespace dom
} // namespace mozilla
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