зеркало из https://github.com/mozilla/gecko-dev.git
830 строки
23 KiB
C++
830 строки
23 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/ContentEvents.h"
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#include "mozilla/dom/SVGSVGElement.h"
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#include "mozilla/dom/SVGSVGElementBinding.h"
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#include "mozilla/dom/SVGMatrix.h"
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#include "mozilla/dom/SVGViewElement.h"
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#include "mozilla/EventDispatcher.h"
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#include "DOMSVGLength.h"
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#include "DOMSVGNumber.h"
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#include "DOMSVGPoint.h"
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#include "nsLayoutStylesheetCache.h"
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#include "nsSVGAngle.h"
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#include "nsFrameSelection.h"
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#include "nsIFrame.h"
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#include "nsISVGSVGFrame.h"
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#include "nsSMILAnimationController.h"
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#include "nsSMILTimeContainer.h"
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#include "nsSVGDisplayableFrame.h"
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#include "nsSVGUtils.h"
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#include "SVGAngle.h"
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NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT_CHECK_PARSER(SVG)
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using namespace mozilla::gfx;
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namespace mozilla {
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namespace dom {
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nsSVGEnumMapping SVGSVGElement::sZoomAndPanMap[] = {
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{&nsGkAtoms::disable, SVG_ZOOMANDPAN_DISABLE},
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{&nsGkAtoms::magnify, SVG_ZOOMANDPAN_MAGNIFY},
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{nullptr, 0}
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};
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nsSVGElement::EnumInfo SVGSVGElement::sEnumInfo[1] =
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{
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{ &nsGkAtoms::zoomAndPan,
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sZoomAndPanMap,
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SVG_ZOOMANDPAN_MAGNIFY
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}
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};
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NS_IMPL_CYCLE_COLLECTION_INHERITED(DOMSVGTranslatePoint, nsISVGPoint,
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mElement)
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NS_IMPL_ADDREF_INHERITED(DOMSVGTranslatePoint, nsISVGPoint)
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NS_IMPL_RELEASE_INHERITED(DOMSVGTranslatePoint, nsISVGPoint)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(DOMSVGTranslatePoint)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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// We have to qualify nsISVGPoint because NS_GET_IID looks for a class in the
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// global namespace
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NS_INTERFACE_MAP_ENTRY(mozilla::nsISVGPoint)
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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DOMSVGPoint*
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DOMSVGTranslatePoint::Copy()
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{
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return new DOMSVGPoint(mPt.GetX(), mPt.GetY());
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}
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nsISupports*
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DOMSVGTranslatePoint::GetParentObject()
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{
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return static_cast<nsIDOMSVGElement*>(mElement);
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}
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void
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DOMSVGTranslatePoint::SetX(float aValue, ErrorResult& rv)
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{
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mElement->SetCurrentTranslate(aValue, mPt.GetY());
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}
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void
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DOMSVGTranslatePoint::SetY(float aValue, ErrorResult& rv)
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{
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mElement->SetCurrentTranslate(mPt.GetX(), aValue);
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}
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already_AddRefed<nsISVGPoint>
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DOMSVGTranslatePoint::MatrixTransform(SVGMatrix& matrix)
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{
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float a = matrix.A(), b = matrix.B(), c = matrix.C();
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float d = matrix.D(), e = matrix.E(), f = matrix.F();
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float x = mPt.GetX();
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float y = mPt.GetY();
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nsCOMPtr<nsISVGPoint> point = new DOMSVGPoint(a*x + c*y + e, b*x + d*y + f);
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return point.forget();
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}
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JSObject*
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SVGSVGElement::WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto)
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{
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return SVGSVGElementBinding::Wrap(aCx, this, aGivenProto);
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}
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//----------------------------------------------------------------------
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// nsISupports methods
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NS_IMPL_CYCLE_COLLECTION_CLASS(SVGSVGElement)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(SVGSVGElement,
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SVGSVGElementBase)
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if (tmp->mTimedDocumentRoot) {
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tmp->mTimedDocumentRoot->Unlink();
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}
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(SVGSVGElement,
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SVGSVGElementBase)
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if (tmp->mTimedDocumentRoot) {
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tmp->mTimedDocumentRoot->Traverse(&cb);
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}
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_IMPL_ADDREF_INHERITED(SVGSVGElement,SVGSVGElementBase)
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NS_IMPL_RELEASE_INHERITED(SVGSVGElement,SVGSVGElementBase)
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NS_INTERFACE_TABLE_HEAD_CYCLE_COLLECTION_INHERITED(SVGSVGElement)
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NS_INTERFACE_TABLE_INHERITED(SVGSVGElement, nsIDOMNode, nsIDOMElement,
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nsIDOMSVGElement)
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NS_INTERFACE_TABLE_TAIL_INHERITING(SVGSVGElementBase)
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SVGView::SVGView()
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{
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mZoomAndPan.Init(SVGSVGElement::ZOOMANDPAN,
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SVG_ZOOMANDPAN_MAGNIFY);
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mViewBox.Init();
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mPreserveAspectRatio.Init();
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}
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//----------------------------------------------------------------------
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// Implementation
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SVGSVGElement::SVGSVGElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo,
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FromParser aFromParser)
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: SVGSVGElementBase(aNodeInfo),
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mCurrentTranslate(0.0f, 0.0f),
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mCurrentScale(1.0f),
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mPreviousTranslate(0.0f, 0.0f),
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mPreviousScale(1.0f),
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mStartAnimationOnBindToTree(aFromParser == NOT_FROM_PARSER ||
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aFromParser == FROM_PARSER_FRAGMENT ||
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aFromParser == FROM_PARSER_XSLT),
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mImageNeedsTransformInvalidation(false)
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{
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}
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SVGSVGElement::~SVGSVGElement()
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{
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}
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//----------------------------------------------------------------------
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// nsIDOMNode methods
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NS_IMPL_ELEMENT_CLONE_WITH_INIT_AND_PARSER(SVGSVGElement)
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//----------------------------------------------------------------------
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// nsIDOMSVGSVGElement methods:
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already_AddRefed<SVGAnimatedLength>
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SVGSVGElement::X()
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{
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return mLengthAttributes[ATTR_X].ToDOMAnimatedLength(this);
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}
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already_AddRefed<SVGAnimatedLength>
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SVGSVGElement::Y()
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{
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return mLengthAttributes[ATTR_Y].ToDOMAnimatedLength(this);
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}
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already_AddRefed<SVGAnimatedLength>
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SVGSVGElement::Width()
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{
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return mLengthAttributes[ATTR_WIDTH].ToDOMAnimatedLength(this);
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}
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already_AddRefed<SVGAnimatedLength>
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SVGSVGElement::Height()
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{
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return mLengthAttributes[ATTR_HEIGHT].ToDOMAnimatedLength(this);
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}
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float
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SVGSVGElement::PixelUnitToMillimeterX()
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{
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return MM_PER_INCH_FLOAT / 96;
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}
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float
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SVGSVGElement::PixelUnitToMillimeterY()
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{
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return PixelUnitToMillimeterX();
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}
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float
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SVGSVGElement::ScreenPixelToMillimeterX()
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{
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return MM_PER_INCH_FLOAT / 96;
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}
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float
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SVGSVGElement::ScreenPixelToMillimeterY()
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{
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return ScreenPixelToMillimeterX();
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}
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bool
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SVGSVGElement::UseCurrentView()
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{
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return mSVGView || mCurrentViewID;
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}
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float
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SVGSVGElement::CurrentScale()
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{
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return mCurrentScale;
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}
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#define CURRENT_SCALE_MAX 16.0f
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#define CURRENT_SCALE_MIN 0.0625f
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void
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SVGSVGElement::SetCurrentScale(float aCurrentScale)
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{
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SetCurrentScaleTranslate(aCurrentScale,
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mCurrentTranslate.GetX(), mCurrentTranslate.GetY());
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}
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already_AddRefed<nsISVGPoint>
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SVGSVGElement::CurrentTranslate()
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{
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nsCOMPtr<nsISVGPoint> point = new DOMSVGTranslatePoint(&mCurrentTranslate, this);
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return point.forget();
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}
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uint32_t
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SVGSVGElement::SuspendRedraw(uint32_t max_wait_milliseconds)
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{
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// suspendRedraw is a no-op in Mozilla, so it doesn't matter what
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// we return
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return 1;
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}
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void
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SVGSVGElement::UnsuspendRedraw(uint32_t suspend_handle_id)
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{
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// no-op
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}
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void
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SVGSVGElement::UnsuspendRedrawAll()
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{
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// no-op
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}
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void
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SVGSVGElement::ForceRedraw()
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{
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// no-op
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}
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void
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SVGSVGElement::PauseAnimations()
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{
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if (mTimedDocumentRoot) {
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mTimedDocumentRoot->Pause(nsSMILTimeContainer::PAUSE_SCRIPT);
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}
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// else we're not the outermost <svg> or not bound to a tree, so silently fail
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}
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void
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SVGSVGElement::UnpauseAnimations()
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{
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if (mTimedDocumentRoot) {
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mTimedDocumentRoot->Resume(nsSMILTimeContainer::PAUSE_SCRIPT);
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}
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// else we're not the outermost <svg> or not bound to a tree, so silently fail
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}
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bool
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SVGSVGElement::AnimationsPaused()
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{
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nsSMILTimeContainer* root = GetTimedDocumentRoot();
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return root && root->IsPausedByType(nsSMILTimeContainer::PAUSE_SCRIPT);
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}
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float
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SVGSVGElement::GetCurrentTime()
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{
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nsSMILTimeContainer* root = GetTimedDocumentRoot();
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if (root) {
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double fCurrentTimeMs = double(root->GetCurrentTime());
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return (float)(fCurrentTimeMs / PR_MSEC_PER_SEC);
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} else {
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return 0.f;
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}
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}
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void
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SVGSVGElement::SetCurrentTime(float seconds)
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{
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if (mTimedDocumentRoot) {
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// Make sure the timegraph is up-to-date
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FlushAnimations();
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double fMilliseconds = double(seconds) * PR_MSEC_PER_SEC;
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// Round to nearest whole number before converting, to avoid precision
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// errors
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nsSMILTime lMilliseconds = int64_t(NS_round(fMilliseconds));
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mTimedDocumentRoot->SetCurrentTime(lMilliseconds);
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AnimationNeedsResample();
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// Trigger synchronous sample now, to:
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// - Make sure we get an up-to-date paint after this method
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// - re-enable event firing (it got disabled during seeking, and it
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// doesn't get re-enabled until the first sample after the seek -- so
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// let's make that happen now.)
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FlushAnimations();
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}
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// else we're not the outermost <svg> or not bound to a tree, so silently fail
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}
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void
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SVGSVGElement::DeselectAll()
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{
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nsIFrame* frame = GetPrimaryFrame();
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if (frame) {
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RefPtr<nsFrameSelection> frameSelection = frame->GetFrameSelection();
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frameSelection->ClearNormalSelection();
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}
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}
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already_AddRefed<DOMSVGNumber>
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SVGSVGElement::CreateSVGNumber()
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{
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RefPtr<DOMSVGNumber> number = new DOMSVGNumber(ToSupports(this));
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return number.forget();
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}
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already_AddRefed<DOMSVGLength>
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SVGSVGElement::CreateSVGLength()
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{
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nsCOMPtr<DOMSVGLength> length = new DOMSVGLength();
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return length.forget();
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}
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already_AddRefed<SVGAngle>
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SVGSVGElement::CreateSVGAngle()
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{
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nsSVGAngle* angle = new nsSVGAngle();
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angle->Init();
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RefPtr<SVGAngle> svgangle = new SVGAngle(angle, this, SVGAngle::CreatedValue);
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return svgangle.forget();
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}
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already_AddRefed<nsISVGPoint>
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SVGSVGElement::CreateSVGPoint()
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{
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nsCOMPtr<nsISVGPoint> point = new DOMSVGPoint(0, 0);
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return point.forget();
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}
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already_AddRefed<SVGMatrix>
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SVGSVGElement::CreateSVGMatrix()
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{
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RefPtr<SVGMatrix> matrix = new SVGMatrix();
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return matrix.forget();
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}
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already_AddRefed<SVGIRect>
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SVGSVGElement::CreateSVGRect()
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{
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return NS_NewSVGRect(this);
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}
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already_AddRefed<SVGTransform>
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SVGSVGElement::CreateSVGTransform()
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{
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RefPtr<SVGTransform> transform = new SVGTransform();
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return transform.forget();
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}
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already_AddRefed<SVGTransform>
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SVGSVGElement::CreateSVGTransformFromMatrix(SVGMatrix& matrix)
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{
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RefPtr<SVGTransform> transform = new SVGTransform(matrix.GetMatrix());
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return transform.forget();
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}
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//----------------------------------------------------------------------
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// helper method for implementing SetCurrentScale/Translate
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void
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SVGSVGElement::SetCurrentScaleTranslate(float s, float x, float y)
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{
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if (s == mCurrentScale &&
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x == mCurrentTranslate.GetX() && y == mCurrentTranslate.GetY()) {
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return;
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}
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// Prevent bizarre behaviour and maxing out of CPU and memory by clamping
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if (s < CURRENT_SCALE_MIN)
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s = CURRENT_SCALE_MIN;
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else if (s > CURRENT_SCALE_MAX)
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s = CURRENT_SCALE_MAX;
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// IMPORTANT: If either mCurrentTranslate *or* mCurrentScale is changed then
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// mPreviousTranslate_x, mPreviousTranslate_y *and* mPreviousScale must all
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// be updated otherwise SVGZoomEvents will end up with invalid data. I.e. an
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// SVGZoomEvent's properties previousScale and previousTranslate must contain
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// the state of currentScale and currentTranslate immediately before the
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// change that caused the event's dispatch, which is *not* necessarily the
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// same thing as the values of currentScale and currentTranslate prior to
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// their own last change.
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//
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// XXX This comment is out-of-date due to removal of SVGZoomEvent. Can we
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// remove some of this code?
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mPreviousScale = mCurrentScale;
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mPreviousTranslate = mCurrentTranslate;
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mCurrentScale = s;
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mCurrentTranslate = SVGPoint(x, y);
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// now dispatch the appropriate event if we are the root element
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nsIDocument* doc = GetUncomposedDoc();
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if (doc) {
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nsCOMPtr<nsIPresShell> presShell = doc->GetShell();
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if (presShell && IsRoot()) {
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nsEventStatus status = nsEventStatus_eIgnore;
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if (mPreviousScale == mCurrentScale) {
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WidgetEvent svgScrollEvent(true, eSVGScroll);
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presShell->HandleDOMEventWithTarget(this, &svgScrollEvent, &status);
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}
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InvalidateTransformNotifyFrame();
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}
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}
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}
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void
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SVGSVGElement::SetCurrentTranslate(float x, float y)
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{
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SetCurrentScaleTranslate(mCurrentScale, x, y);
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}
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//----------------------------------------------------------------------
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// SVGZoomAndPanValues
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uint16_t
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SVGSVGElement::ZoomAndPan()
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{
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return mEnumAttributes[ZOOMANDPAN].GetAnimValue();
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}
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void
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SVGSVGElement::SetZoomAndPan(uint16_t aZoomAndPan, ErrorResult& rv)
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{
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if (aZoomAndPan == SVG_ZOOMANDPAN_DISABLE ||
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aZoomAndPan == SVG_ZOOMANDPAN_MAGNIFY) {
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mEnumAttributes[ZOOMANDPAN].SetBaseValue(aZoomAndPan, this);
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return;
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}
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rv.ThrowRangeError<MSG_INVALID_ZOOMANDPAN_VALUE_ERROR>();
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}
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//----------------------------------------------------------------------
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nsSMILTimeContainer*
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SVGSVGElement::GetTimedDocumentRoot()
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{
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if (mTimedDocumentRoot) {
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return mTimedDocumentRoot;
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}
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// We must not be the outermost <svg> element, try to find it
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SVGSVGElement *outerSVGElement =
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SVGContentUtils::GetOuterSVGElement(this);
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if (outerSVGElement) {
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return outerSVGElement->GetTimedDocumentRoot();
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}
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// invalid structure
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return nullptr;
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}
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//----------------------------------------------------------------------
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// nsSVGElement
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nsresult
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SVGSVGElement::BindToTree(nsIDocument* aDocument,
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nsIContent* aParent,
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nsIContent* aBindingParent,
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bool aCompileEventHandlers)
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{
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nsSMILAnimationController* smilController = nullptr;
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if (aDocument) {
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smilController = aDocument->GetAnimationController();
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if (smilController) {
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// SMIL is enabled in this document
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if (WillBeOutermostSVG(aParent, aBindingParent)) {
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// We'll be the outermost <svg> element. We'll need a time container.
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if (!mTimedDocumentRoot) {
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mTimedDocumentRoot = new nsSMILTimeContainer();
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}
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} else {
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// We're a child of some other <svg> element, so we don't need our own
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// time container. However, we need to make sure that we'll get a
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// kick-start if we get promoted to be outermost later on.
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mTimedDocumentRoot = nullptr;
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mStartAnimationOnBindToTree = true;
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}
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}
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}
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nsresult rv = SVGGraphicsElement::BindToTree(aDocument, aParent,
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aBindingParent,
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aCompileEventHandlers);
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NS_ENSURE_SUCCESS(rv,rv);
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nsIDocument* doc = GetComposedDoc();
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if (doc) {
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// Setup the style sheet during binding, not element construction,
|
|
// because we could move the root SVG element from the document
|
|
// that created it to another document.
|
|
auto cache = nsLayoutStylesheetCache::For(doc->GetStyleBackendType());
|
|
doc->EnsureOnDemandBuiltInUASheet(cache->SVGSheet());
|
|
}
|
|
|
|
if (mTimedDocumentRoot && smilController) {
|
|
rv = mTimedDocumentRoot->SetParent(smilController);
|
|
if (mStartAnimationOnBindToTree) {
|
|
mTimedDocumentRoot->Begin();
|
|
mStartAnimationOnBindToTree = false;
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
void
|
|
SVGSVGElement::UnbindFromTree(bool aDeep, bool aNullParent)
|
|
{
|
|
if (mTimedDocumentRoot) {
|
|
mTimedDocumentRoot->SetParent(nullptr);
|
|
}
|
|
|
|
SVGGraphicsElement::UnbindFromTree(aDeep, aNullParent);
|
|
}
|
|
|
|
nsSVGAnimatedTransformList*
|
|
SVGSVGElement::GetAnimatedTransformList(uint32_t aFlags)
|
|
{
|
|
if (!(aFlags & DO_ALLOCATE) && mSVGView && mSVGView->mTransforms) {
|
|
return mSVGView->mTransforms;
|
|
}
|
|
return SVGGraphicsElement::GetAnimatedTransformList(aFlags);
|
|
}
|
|
|
|
nsresult
|
|
SVGSVGElement::GetEventTargetParent(EventChainPreVisitor& aVisitor)
|
|
{
|
|
if (aVisitor.mEvent->mMessage == eSVGLoad) {
|
|
if (mTimedDocumentRoot) {
|
|
mTimedDocumentRoot->Begin();
|
|
// Set 'resample needed' flag, so that if any script calls a DOM method
|
|
// that requires up-to-date animations before our first sample callback,
|
|
// we'll force a synchronous sample.
|
|
AnimationNeedsResample();
|
|
}
|
|
}
|
|
return SVGSVGElementBase::GetEventTargetParent(aVisitor);
|
|
}
|
|
|
|
bool
|
|
SVGSVGElement::IsEventAttributeNameInternal(nsIAtom* aName)
|
|
{
|
|
/* The events in EventNameType_SVGSVG are for events that are only
|
|
applicable to outermost 'svg' elements. We don't check if we're an outer
|
|
'svg' element in case we're not inserted into the document yet, but since
|
|
the target of the events in question will always be the outermost 'svg'
|
|
element, this shouldn't cause any real problems.
|
|
*/
|
|
return nsContentUtils::IsEventAttributeName(aName,
|
|
(EventNameType_SVGGraphic | EventNameType_SVGSVG));
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// public helpers:
|
|
|
|
int32_t
|
|
SVGSVGElement::GetIntrinsicWidth()
|
|
{
|
|
if (mLengthAttributes[ATTR_WIDTH].IsPercentage()) {
|
|
return -1;
|
|
}
|
|
// Passing |this| as a SVGViewportElement* invokes the variant of GetAnimValue
|
|
// that uses the passed argument as the context, but that's fine since we
|
|
// know the length isn't a percentage so the context won't be used (and we
|
|
// need to pass the element to be able to resolve em/ex units).
|
|
float width = mLengthAttributes[ATTR_WIDTH].GetAnimValue(this);
|
|
return nsSVGUtils::ClampToInt(width);
|
|
}
|
|
|
|
int32_t
|
|
SVGSVGElement::GetIntrinsicHeight()
|
|
{
|
|
if (mLengthAttributes[ATTR_HEIGHT].IsPercentage()) {
|
|
return -1;
|
|
}
|
|
// Passing |this| as a SVGViewportElement* invokes the variant of GetAnimValue
|
|
// that uses the passed argument as the context, but that's fine since we
|
|
// know the length isn't a percentage so the context won't be used (and we
|
|
// need to pass the element to be able to resolve em/ex units).
|
|
float height = mLengthAttributes[ATTR_HEIGHT].GetAnimValue(this);
|
|
return nsSVGUtils::ClampToInt(height);
|
|
}
|
|
|
|
void
|
|
SVGSVGElement::FlushImageTransformInvalidation()
|
|
{
|
|
MOZ_ASSERT(!GetParent(), "Should only be called on root node");
|
|
MOZ_ASSERT(OwnerDoc()->IsBeingUsedAsImage(),
|
|
"Should only be called on image documents");
|
|
|
|
if (mImageNeedsTransformInvalidation) {
|
|
InvalidateTransformNotifyFrame();
|
|
mImageNeedsTransformInvalidation = false;
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// implementation helpers
|
|
|
|
bool
|
|
SVGSVGElement::WillBeOutermostSVG(nsIContent* aParent,
|
|
nsIContent* aBindingParent) const
|
|
{
|
|
nsIContent* parent = aBindingParent ? aBindingParent : aParent;
|
|
|
|
while (parent && parent->IsSVGElement()) {
|
|
if (parent->IsSVGElement(nsGkAtoms::foreignObject)) {
|
|
// SVG in a foreignObject must have its own <svg> (nsSVGOuterSVGFrame).
|
|
return false;
|
|
}
|
|
if (parent->IsSVGElement(nsGkAtoms::svg)) {
|
|
return false;
|
|
}
|
|
parent = parent->GetParent();
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void
|
|
SVGSVGElement::InvalidateTransformNotifyFrame()
|
|
{
|
|
nsISVGSVGFrame* svgframe = do_QueryFrame(GetPrimaryFrame());
|
|
// might fail this check if we've failed conditional processing
|
|
if (svgframe) {
|
|
svgframe->NotifyViewportOrTransformChanged(
|
|
nsSVGDisplayableFrame::TRANSFORM_CHANGED);
|
|
}
|
|
}
|
|
|
|
nsSVGElement::EnumAttributesInfo
|
|
SVGSVGElement::GetEnumInfo()
|
|
{
|
|
return EnumAttributesInfo(mEnumAttributes, sEnumInfo,
|
|
ArrayLength(sEnumInfo));
|
|
}
|
|
|
|
void
|
|
SVGSVGElement::
|
|
SetImageOverridePreserveAspectRatio(const SVGPreserveAspectRatio& aPAR)
|
|
{
|
|
#ifdef DEBUG
|
|
MOZ_ASSERT(OwnerDoc()->IsBeingUsedAsImage(),
|
|
"should only override preserveAspectRatio in images");
|
|
#endif
|
|
|
|
bool hasViewBoxRect = HasViewBoxRect();
|
|
if (!hasViewBoxRect && ShouldSynthesizeViewBox()) {
|
|
// My non-<svg:image> clients will have been painting me with a synthesized
|
|
// viewBox, but my <svg:image> client that's about to paint me now does NOT
|
|
// want that. Need to tell ourselves to flush our transform.
|
|
mImageNeedsTransformInvalidation = true;
|
|
}
|
|
|
|
if (!hasViewBoxRect) {
|
|
return; // preserveAspectRatio irrelevant (only matters if we have viewBox)
|
|
}
|
|
|
|
if (SetPreserveAspectRatioProperty(aPAR)) {
|
|
mImageNeedsTransformInvalidation = true;
|
|
}
|
|
}
|
|
|
|
void
|
|
SVGSVGElement::ClearImageOverridePreserveAspectRatio()
|
|
{
|
|
#ifdef DEBUG
|
|
MOZ_ASSERT(OwnerDoc()->IsBeingUsedAsImage(),
|
|
"should only override image preserveAspectRatio in images");
|
|
#endif
|
|
|
|
if (!HasViewBoxRect() && ShouldSynthesizeViewBox()) {
|
|
// My non-<svg:image> clients will want to paint me with a synthesized
|
|
// viewBox, but my <svg:image> client that just painted me did NOT
|
|
// use that. Need to tell ourselves to flush our transform.
|
|
mImageNeedsTransformInvalidation = true;
|
|
}
|
|
|
|
if (ClearPreserveAspectRatioProperty()) {
|
|
mImageNeedsTransformInvalidation = true;
|
|
}
|
|
}
|
|
|
|
bool
|
|
SVGSVGElement::SetPreserveAspectRatioProperty(const SVGPreserveAspectRatio& aPAR)
|
|
{
|
|
SVGPreserveAspectRatio* pAROverridePtr = new SVGPreserveAspectRatio(aPAR);
|
|
nsresult rv = SetProperty(nsGkAtoms::overridePreserveAspectRatio,
|
|
pAROverridePtr,
|
|
nsINode::DeleteProperty<SVGPreserveAspectRatio>,
|
|
true);
|
|
MOZ_ASSERT(rv != NS_PROPTABLE_PROP_OVERWRITTEN,
|
|
"Setting override value when it's already set...?");
|
|
|
|
if (MOZ_UNLIKELY(NS_FAILED(rv))) {
|
|
// property-insertion failed (e.g. OOM in property-table code)
|
|
delete pAROverridePtr;
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
const SVGPreserveAspectRatio*
|
|
SVGSVGElement::GetPreserveAspectRatioProperty() const
|
|
{
|
|
void* valPtr = GetProperty(nsGkAtoms::overridePreserveAspectRatio);
|
|
if (valPtr) {
|
|
return static_cast<SVGPreserveAspectRatio*>(valPtr);
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
bool
|
|
SVGSVGElement::ClearPreserveAspectRatioProperty()
|
|
{
|
|
void* valPtr = UnsetProperty(nsGkAtoms::overridePreserveAspectRatio);
|
|
delete static_cast<SVGPreserveAspectRatio*>(valPtr);
|
|
return valPtr;
|
|
}
|
|
|
|
|
|
SVGPreserveAspectRatio
|
|
SVGSVGElement::GetPreserveAspectRatioWithOverride() const
|
|
{
|
|
nsIDocument* doc = GetUncomposedDoc();
|
|
if (doc && doc->IsBeingUsedAsImage()) {
|
|
const SVGPreserveAspectRatio *pAROverridePtr = GetPreserveAspectRatioProperty();
|
|
if (pAROverridePtr) {
|
|
return *pAROverridePtr;
|
|
}
|
|
}
|
|
|
|
SVGViewElement* viewElement = GetCurrentViewElement();
|
|
|
|
// This check is equivalent to "!HasViewBoxRect() && ShouldSynthesizeViewBox()".
|
|
// We're just holding onto the viewElement that HasViewBoxRect() would look up,
|
|
// so that we don't have to look it up again later.
|
|
if (!((viewElement && viewElement->mViewBox.HasRect()) ||
|
|
(mSVGView && mSVGView->mViewBox.HasRect()) ||
|
|
mViewBox.HasRect()) &&
|
|
ShouldSynthesizeViewBox()) {
|
|
// If we're synthesizing a viewBox, use preserveAspectRatio="none";
|
|
return SVGPreserveAspectRatio(SVG_PRESERVEASPECTRATIO_NONE, SVG_MEETORSLICE_SLICE);
|
|
}
|
|
|
|
if (viewElement && viewElement->mPreserveAspectRatio.IsExplicitlySet()) {
|
|
return viewElement->mPreserveAspectRatio.GetAnimValue();
|
|
}
|
|
if (mSVGView && mSVGView->mPreserveAspectRatio.IsExplicitlySet()) {
|
|
return mSVGView->mPreserveAspectRatio.GetAnimValue();
|
|
}
|
|
return mPreserveAspectRatio.GetAnimValue();
|
|
}
|
|
|
|
SVGViewElement*
|
|
SVGSVGElement::GetCurrentViewElement() const
|
|
{
|
|
if (mCurrentViewID) {
|
|
//XXXsmaug It is unclear how this should work in case we're in Shadow DOM.
|
|
nsIDocument* doc = GetUncomposedDoc();
|
|
if (doc) {
|
|
Element *element = doc->GetElementById(*mCurrentViewID);
|
|
if (element && element->IsSVGElement(nsGkAtoms::view)) {
|
|
return static_cast<SVGViewElement*>(element);
|
|
}
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
const nsSVGViewBox&
|
|
SVGSVGElement::GetViewBoxInternal() const
|
|
{
|
|
SVGViewElement* viewElement = GetCurrentViewElement();
|
|
|
|
if (viewElement && viewElement->mViewBox.HasRect()) {
|
|
return viewElement->mViewBox;
|
|
} else if (mSVGView && mSVGView->mViewBox.HasRect()) {
|
|
return mSVGView->mViewBox;
|
|
}
|
|
|
|
return mViewBox;
|
|
}
|
|
|
|
nsSVGAnimatedTransformList*
|
|
SVGSVGElement::GetTransformInternal() const
|
|
{
|
|
return (mSVGView && mSVGView->mTransforms)
|
|
? mSVGView->mTransforms: mTransforms;
|
|
}
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|