зеркало из https://github.com/mozilla/gecko-dev.git
300 строки
10 KiB
C++
300 строки
10 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/dom/SVGImageElement.h"
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#include "mozilla/ArrayUtils.h"
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#include "mozilla/EventStateManager.h"
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#include "mozilla/EventStates.h"
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#include "mozilla/gfx/2D.h"
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#include "nsCOMPtr.h"
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#include "nsIURI.h"
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#include "nsNetUtil.h"
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#include "imgINotificationObserver.h"
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#include "mozilla/dom/SVGImageElementBinding.h"
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#include "mozilla/dom/SVGLengthBinding.h"
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#include "nsContentUtils.h"
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NS_IMPL_NS_NEW_SVG_ELEMENT(Image)
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using namespace mozilla::gfx;
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namespace mozilla {
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namespace dom {
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JSObject* SVGImageElement::WrapNode(JSContext* aCx,
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JS::Handle<JSObject*> aGivenProto) {
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return SVGImageElement_Binding::Wrap(aCx, this, aGivenProto);
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}
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SVGElement::LengthInfo SVGImageElement::sLengthInfo[4] = {
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{nsGkAtoms::x, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
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SVGContentUtils::X},
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{nsGkAtoms::y, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
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SVGContentUtils::Y},
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{nsGkAtoms::width, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
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SVGContentUtils::X},
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{nsGkAtoms::height, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
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SVGContentUtils::Y},
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};
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SVGElement::StringInfo SVGImageElement::sStringInfo[2] = {
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{nsGkAtoms::href, kNameSpaceID_None, true},
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{nsGkAtoms::href, kNameSpaceID_XLink, true}};
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//----------------------------------------------------------------------
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// nsISupports methods
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NS_IMPL_ISUPPORTS_INHERITED(SVGImageElement, SVGImageElementBase,
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imgINotificationObserver, nsIImageLoadingContent)
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//----------------------------------------------------------------------
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// Implementation
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SVGImageElement::SVGImageElement(
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already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
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: SVGImageElementBase(std::move(aNodeInfo)) {
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// We start out broken
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AddStatesSilently(NS_EVENT_STATE_BROKEN);
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}
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SVGImageElement::~SVGImageElement() { DestroyImageLoadingContent(); }
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//----------------------------------------------------------------------
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// nsINode methods
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NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGImageElement)
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//----------------------------------------------------------------------
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already_AddRefed<SVGAnimatedLength> SVGImageElement::X() {
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return mLengthAttributes[ATTR_X].ToDOMAnimatedLength(this);
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}
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already_AddRefed<SVGAnimatedLength> SVGImageElement::Y() {
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return mLengthAttributes[ATTR_Y].ToDOMAnimatedLength(this);
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}
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already_AddRefed<SVGAnimatedLength> SVGImageElement::Width() {
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return mLengthAttributes[ATTR_WIDTH].ToDOMAnimatedLength(this);
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}
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already_AddRefed<SVGAnimatedLength> SVGImageElement::Height() {
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return mLengthAttributes[ATTR_HEIGHT].ToDOMAnimatedLength(this);
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}
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already_AddRefed<DOMSVGAnimatedPreserveAspectRatio>
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SVGImageElement::PreserveAspectRatio() {
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return mPreserveAspectRatio.ToDOMAnimatedPreserveAspectRatio(this);
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}
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already_AddRefed<SVGAnimatedString> SVGImageElement::Href() {
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return mStringAttributes[HREF].IsExplicitlySet()
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? mStringAttributes[HREF].ToDOMAnimatedString(this)
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: mStringAttributes[XLINK_HREF].ToDOMAnimatedString(this);
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}
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void SVGImageElement::GetDecoding(nsAString& aValue) {
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GetEnumAttr(nsGkAtoms::decoding, kDecodingTableDefault->tag, aValue);
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}
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//----------------------------------------------------------------------
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nsresult SVGImageElement::LoadSVGImage(bool aForce, bool aNotify) {
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// resolve href attribute
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nsCOMPtr<nsIURI> baseURI = GetBaseURI();
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nsAutoString href;
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if (mStringAttributes[HREF].IsExplicitlySet()) {
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mStringAttributes[HREF].GetAnimValue(href, this);
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} else {
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mStringAttributes[XLINK_HREF].GetAnimValue(href, this);
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}
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href.Trim(" \t\n\r");
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if (baseURI && !href.IsEmpty()) NS_MakeAbsoluteURI(href, href, baseURI);
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// Mark channel as urgent-start before load image if the image load is
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// initaiated by a user interaction.
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mUseUrgentStartForChannel = EventStateManager::IsHandlingUserInput();
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return LoadImage(href, aForce, aNotify, eImageLoadType_Normal);
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}
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//----------------------------------------------------------------------
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// EventTarget methods:
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void SVGImageElement::AsyncEventRunning(AsyncEventDispatcher* aEvent) {
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nsImageLoadingContent::AsyncEventRunning(aEvent);
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}
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//----------------------------------------------------------------------
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// nsIContent methods:
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bool SVGImageElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
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const nsAString& aValue,
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nsIPrincipal* aMaybeScriptedPrincipal,
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nsAttrValue& aResult) {
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if (aNamespaceID == kNameSpaceID_None) {
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if (aAttribute == nsGkAtoms::decoding) {
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return aResult.ParseEnumValue(aValue, kDecodingTable, false,
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kDecodingTableDefault);
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}
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}
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return SVGImageElementBase::ParseAttribute(aNamespaceID, aAttribute, aValue,
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aMaybeScriptedPrincipal, aResult);
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}
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nsresult SVGImageElement::AfterSetAttr(int32_t aNamespaceID, nsAtom* aName,
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const nsAttrValue* aValue,
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const nsAttrValue* aOldValue,
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nsIPrincipal* aSubjectPrincipal,
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bool aNotify) {
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if (aName == nsGkAtoms::href && (aNamespaceID == kNameSpaceID_None ||
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aNamespaceID == kNameSpaceID_XLink)) {
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if (aValue) {
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LoadSVGImage(true, aNotify);
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} else {
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CancelImageRequests(aNotify);
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}
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} else if (aName == nsGkAtoms::decoding &&
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aNamespaceID == kNameSpaceID_None) {
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// Request sync or async image decoding.
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SetSyncDecodingHint(
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aValue && static_cast<ImageDecodingType>(aValue->GetEnumValue()) ==
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ImageDecodingType::Sync);
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}
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return SVGImageElementBase::AfterSetAttr(
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aNamespaceID, aName, aValue, aOldValue, aSubjectPrincipal, aNotify);
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}
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void SVGImageElement::MaybeLoadSVGImage() {
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if ((mStringAttributes[HREF].IsExplicitlySet() ||
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mStringAttributes[XLINK_HREF].IsExplicitlySet()) &&
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(NS_FAILED(LoadSVGImage(false, true)) || !LoadingEnabled())) {
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CancelImageRequests(true);
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}
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}
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nsresult SVGImageElement::BindToTree(nsIDocument* aDocument,
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nsIContent* aParent,
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nsIContent* aBindingParent) {
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nsresult rv =
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SVGImageElementBase::BindToTree(aDocument, aParent, aBindingParent);
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NS_ENSURE_SUCCESS(rv, rv);
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nsImageLoadingContent::BindToTree(aDocument, aParent, aBindingParent);
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if (mStringAttributes[HREF].IsExplicitlySet() ||
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mStringAttributes[XLINK_HREF].IsExplicitlySet()) {
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// FIXME: Bug 660963 it would be nice if we could just have
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// ClearBrokenState update our state and do it fast...
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ClearBrokenState();
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RemoveStatesSilently(NS_EVENT_STATE_BROKEN);
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nsContentUtils::AddScriptRunner(
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NewRunnableMethod("dom::SVGImageElement::MaybeLoadSVGImage", this,
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&SVGImageElement::MaybeLoadSVGImage));
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}
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return rv;
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}
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void SVGImageElement::UnbindFromTree(bool aDeep, bool aNullParent) {
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nsImageLoadingContent::UnbindFromTree(aDeep, aNullParent);
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SVGImageElementBase::UnbindFromTree(aDeep, aNullParent);
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}
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EventStates SVGImageElement::IntrinsicState() const {
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return SVGImageElementBase::IntrinsicState() |
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nsImageLoadingContent::ImageState();
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}
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NS_IMETHODIMP_(bool)
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SVGImageElement::IsAttributeMapped(const nsAtom* name) const {
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static const MappedAttributeEntry* const map[] = {
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sViewportsMap,
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};
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return FindAttributeDependence(name, map) ||
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SVGImageElementBase::IsAttributeMapped(name);
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}
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//----------------------------------------------------------------------
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// SVGGeometryElement methods
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/* For the purposes of the update/invalidation logic pretend to
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be a rectangle. */
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bool SVGImageElement::GetGeometryBounds(
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Rect* aBounds, const StrokeOptions& aStrokeOptions,
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const Matrix& aToBoundsSpace, const Matrix* aToNonScalingStrokeSpace) {
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Rect rect;
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GetAnimatedLengthValues(&rect.x, &rect.y, &rect.width, &rect.height, nullptr);
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if (rect.IsEmpty()) {
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// Rendering of the element disabled
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rect.SetEmpty(); // Make sure width/height are zero and not negative
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}
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*aBounds = aToBoundsSpace.TransformBounds(rect);
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return true;
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}
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already_AddRefed<Path> SVGImageElement::BuildPath(PathBuilder* aBuilder) {
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// We get called in order to get bounds for this element, and for
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// hit-testing against it. For that we just pretend to be a rectangle.
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float x, y, width, height;
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GetAnimatedLengthValues(&x, &y, &width, &height, nullptr);
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if (width <= 0 || height <= 0) {
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return nullptr;
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}
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Rect r(x, y, width, height);
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aBuilder->MoveTo(r.TopLeft());
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aBuilder->LineTo(r.TopRight());
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aBuilder->LineTo(r.BottomRight());
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aBuilder->LineTo(r.BottomLeft());
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aBuilder->Close();
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return aBuilder->Finish();
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}
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//----------------------------------------------------------------------
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// SVGElement methods
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/* virtual */ bool SVGImageElement::HasValidDimensions() const {
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return mLengthAttributes[ATTR_WIDTH].IsExplicitlySet() &&
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mLengthAttributes[ATTR_WIDTH].GetAnimValInSpecifiedUnits() > 0 &&
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mLengthAttributes[ATTR_HEIGHT].IsExplicitlySet() &&
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mLengthAttributes[ATTR_HEIGHT].GetAnimValInSpecifiedUnits() > 0;
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}
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SVGElement::LengthAttributesInfo SVGImageElement::GetLengthInfo() {
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return LengthAttributesInfo(mLengthAttributes, sLengthInfo,
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ArrayLength(sLengthInfo));
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}
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SVGAnimatedPreserveAspectRatio* SVGImageElement::GetPreserveAspectRatio() {
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return &mPreserveAspectRatio;
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}
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SVGElement::StringAttributesInfo SVGImageElement::GetStringInfo() {
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return StringAttributesInfo(mStringAttributes, sStringInfo,
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ArrayLength(sStringInfo));
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}
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nsresult SVGImageElement::CopyInnerTo(Element* aDest) {
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if (aDest->OwnerDoc()->IsStaticDocument()) {
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CreateStaticImageClone(static_cast<SVGImageElement*>(aDest));
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}
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return SVGImageElementBase::CopyInnerTo(aDest);
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}
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} // namespace dom
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} // namespace mozilla
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