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-rw-r--r--dom/svg/SVGImageElement.cpp318
1 files changed, 318 insertions, 0 deletions
diff --git a/dom/svg/SVGImageElement.cpp b/dom/svg/SVGImageElement.cpp
new file mode 100644
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--- /dev/null
+++ b/dom/svg/SVGImageElement.cpp
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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/SVGImageElement.h"
+
+#include "mozilla/ArrayUtils.h"
+#include "mozilla/gfx/2D.h"
+#include "nsCOMPtr.h"
+#include "nsIURI.h"
+#include "nsNetUtil.h"
+#include "imgINotificationObserver.h"
+#include "mozilla/dom/Document.h"
+#include "mozilla/dom/SVGImageElementBinding.h"
+#include "mozilla/dom/SVGLengthBinding.h"
+#include "mozilla/dom/UserActivation.h"
+#include "nsContentUtils.h"
+#include "SVGGeometryProperty.h"
+
+NS_IMPL_NS_NEW_SVG_ELEMENT(Image)
+
+using namespace mozilla::gfx;
+
+namespace mozilla::dom {
+
+JSObject* SVGImageElement::WrapNode(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) {
+ return SVGImageElement_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+SVGElement::LengthInfo SVGImageElement::sLengthInfo[4] = {
+ {nsGkAtoms::x, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
+ SVGContentUtils::X},
+ {nsGkAtoms::y, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
+ SVGContentUtils::Y},
+ {nsGkAtoms::width, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
+ SVGContentUtils::X},
+ {nsGkAtoms::height, 0, SVGLength_Binding::SVG_LENGTHTYPE_NUMBER,
+ SVGContentUtils::Y},
+};
+
+SVGElement::StringInfo SVGImageElement::sStringInfo[2] = {
+ {nsGkAtoms::href, kNameSpaceID_None, true},
+ {nsGkAtoms::href, kNameSpaceID_XLink, true}};
+
+//----------------------------------------------------------------------
+// nsISupports methods
+
+NS_IMPL_ISUPPORTS_INHERITED(SVGImageElement, SVGImageElementBase,
+ imgINotificationObserver, nsIImageLoadingContent)
+
+//----------------------------------------------------------------------
+// Implementation
+
+namespace SVGT = SVGGeometryProperty::Tags;
+
+SVGImageElement::SVGImageElement(
+ already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
+ : SVGImageElementBase(std::move(aNodeInfo)) {
+ // We start out broken
+ AddStatesSilently(ElementState::BROKEN);
+}
+
+SVGImageElement::~SVGImageElement() { nsImageLoadingContent::Destroy(); }
+
+nsCSSPropertyID SVGImageElement::GetCSSPropertyIdForAttrEnum(
+ uint8_t aAttrEnum) {
+ switch (aAttrEnum) {
+ case ATTR_X:
+ return eCSSProperty_x;
+ case ATTR_Y:
+ return eCSSProperty_y;
+ case ATTR_WIDTH:
+ return eCSSProperty_width;
+ case ATTR_HEIGHT:
+ return eCSSProperty_height;
+ default:
+ MOZ_ASSERT_UNREACHABLE("Unknown attr enum");
+ return eCSSProperty_UNKNOWN;
+ }
+}
+//----------------------------------------------------------------------
+// nsINode methods
+
+NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGImageElement)
+
+//----------------------------------------------------------------------
+
+already_AddRefed<DOMSVGAnimatedLength> SVGImageElement::X() {
+ return mLengthAttributes[ATTR_X].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<DOMSVGAnimatedLength> SVGImageElement::Y() {
+ return mLengthAttributes[ATTR_Y].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<DOMSVGAnimatedLength> SVGImageElement::Width() {
+ return mLengthAttributes[ATTR_WIDTH].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<DOMSVGAnimatedLength> SVGImageElement::Height() {
+ return mLengthAttributes[ATTR_HEIGHT].ToDOMAnimatedLength(this);
+}
+
+already_AddRefed<DOMSVGAnimatedPreserveAspectRatio>
+SVGImageElement::PreserveAspectRatio() {
+ return mPreserveAspectRatio.ToDOMAnimatedPreserveAspectRatio(this);
+}
+
+already_AddRefed<DOMSVGAnimatedString> SVGImageElement::Href() {
+ return mStringAttributes[HREF].IsExplicitlySet()
+ ? mStringAttributes[HREF].ToDOMAnimatedString(this)
+ : mStringAttributes[XLINK_HREF].ToDOMAnimatedString(this);
+}
+
+void SVGImageElement::GetDecoding(nsAString& aValue) {
+ GetEnumAttr(nsGkAtoms::decoding, kDecodingTableDefault->tag, aValue);
+}
+
+already_AddRefed<Promise> SVGImageElement::Decode(ErrorResult& aRv) {
+ return nsImageLoadingContent::QueueDecodeAsync(aRv);
+}
+
+//----------------------------------------------------------------------
+
+nsresult SVGImageElement::LoadSVGImage(bool aForce, bool aNotify) {
+ // resolve href attribute
+ nsIURI* baseURI = GetBaseURI();
+
+ nsAutoString href;
+ if (mStringAttributes[HREF].IsExplicitlySet()) {
+ mStringAttributes[HREF].GetAnimValue(href, this);
+ } else {
+ mStringAttributes[XLINK_HREF].GetAnimValue(href, this);
+ }
+ href.Trim(" \t\n\r");
+
+ if (baseURI && !href.IsEmpty()) NS_MakeAbsoluteURI(href, href, baseURI);
+
+ // Mark channel as urgent-start before load image if the image load is
+ // initaiated by a user interaction.
+ mUseUrgentStartForChannel = UserActivation::IsHandlingUserInput();
+
+ return LoadImage(href, aForce, aNotify, eImageLoadType_Normal);
+}
+
+bool SVGImageElement::ShouldLoadImage() const {
+ return LoadingEnabled() && OwnerDoc()->ShouldLoadImages();
+}
+
+Rect SVGImageElement::GeometryBounds(const Matrix& aToBoundsSpace) {
+ Rect rect;
+
+ DebugOnly<bool> ok =
+ SVGGeometryProperty::ResolveAll<SVGT::X, SVGT::Y, SVGT::Width,
+ SVGT::Height>(this, &rect.x, &rect.y,
+ &rect.width, &rect.height);
+ MOZ_ASSERT(ok, "SVGGeometryProperty::ResolveAll failed");
+
+ if (rect.IsEmpty()) {
+ // Rendering of the element disabled
+ rect.SetEmpty(); // Make sure width/height are zero and not negative
+ }
+
+ return aToBoundsSpace.TransformBounds(rect);
+}
+
+//----------------------------------------------------------------------
+// EventTarget methods:
+
+void SVGImageElement::AsyncEventRunning(AsyncEventDispatcher* aEvent) {
+ nsImageLoadingContent::AsyncEventRunning(aEvent);
+}
+
+//----------------------------------------------------------------------
+// nsImageLoadingContent methods:
+
+CORSMode SVGImageElement::GetCORSMode() {
+ return AttrValueToCORSMode(GetParsedAttr(nsGkAtoms::crossorigin));
+}
+
+//----------------------------------------------------------------------
+// nsIContent methods:
+
+bool SVGImageElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute,
+ const nsAString& aValue,
+ nsIPrincipal* aMaybeScriptedPrincipal,
+ nsAttrValue& aResult) {
+ if (aNamespaceID == kNameSpaceID_None) {
+ if (aAttribute == nsGkAtoms::crossorigin) {
+ ParseCORSValue(aValue, aResult);
+ return true;
+ }
+ if (aAttribute == nsGkAtoms::decoding) {
+ return aResult.ParseEnumValue(aValue, kDecodingTable, false,
+ kDecodingTableDefault);
+ }
+ }
+
+ return SVGImageElementBase::ParseAttribute(aNamespaceID, aAttribute, aValue,
+ aMaybeScriptedPrincipal, aResult);
+}
+
+void SVGImageElement::AfterSetAttr(int32_t aNamespaceID, nsAtom* aName,
+ const nsAttrValue* aValue,
+ const nsAttrValue* aOldValue,
+ nsIPrincipal* aSubjectPrincipal,
+ bool aNotify) {
+ if (aName == nsGkAtoms::href && (aNamespaceID == kNameSpaceID_None ||
+ aNamespaceID == kNameSpaceID_XLink)) {
+ if (aValue) {
+ if (ShouldLoadImage()) {
+ LoadSVGImage(true, aNotify);
+ }
+ } else {
+ CancelImageRequests(aNotify);
+ }
+ } else if (aNamespaceID == kNameSpaceID_None) {
+ if (aName == nsGkAtoms::decoding) {
+ // Request sync or async image decoding.
+ SetSyncDecodingHint(
+ aValue && static_cast<ImageDecodingType>(aValue->GetEnumValue()) ==
+ ImageDecodingType::Sync);
+ } else if (aName == nsGkAtoms::crossorigin) {
+ if (aNotify && GetCORSMode() != AttrValueToCORSMode(aOldValue) &&
+ ShouldLoadImage()) {
+ ForceReload(aNotify, IgnoreErrors());
+ }
+ }
+ }
+
+ return SVGImageElementBase::AfterSetAttr(
+ aNamespaceID, aName, aValue, aOldValue, aSubjectPrincipal, aNotify);
+}
+
+void SVGImageElement::MaybeLoadSVGImage() {
+ if ((mStringAttributes[HREF].IsExplicitlySet() ||
+ mStringAttributes[XLINK_HREF].IsExplicitlySet()) &&
+ (NS_FAILED(LoadSVGImage(false, true)) || !LoadingEnabled())) {
+ CancelImageRequests(true);
+ }
+}
+
+nsresult SVGImageElement::BindToTree(BindContext& aContext, nsINode& aParent) {
+ nsresult rv = SVGImageElementBase::BindToTree(aContext, aParent);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ nsImageLoadingContent::BindToTree(aContext, aParent);
+
+ if ((mStringAttributes[HREF].IsExplicitlySet() ||
+ mStringAttributes[XLINK_HREF].IsExplicitlySet()) &&
+ ShouldLoadImage()) {
+ nsContentUtils::AddScriptRunner(
+ NewRunnableMethod("dom::SVGImageElement::MaybeLoadSVGImage", this,
+ &SVGImageElement::MaybeLoadSVGImage));
+ }
+
+ return rv;
+}
+
+void SVGImageElement::UnbindFromTree(bool aNullParent) {
+ nsImageLoadingContent::UnbindFromTree(aNullParent);
+ SVGImageElementBase::UnbindFromTree(aNullParent);
+}
+
+ElementState SVGImageElement::IntrinsicState() const {
+ return SVGImageElementBase::IntrinsicState() |
+ nsImageLoadingContent::ImageState();
+}
+
+void SVGImageElement::DestroyContent() {
+ nsImageLoadingContent::Destroy();
+ SVGImageElementBase::DestroyContent();
+}
+
+NS_IMETHODIMP_(bool)
+SVGImageElement::IsAttributeMapped(const nsAtom* name) const {
+ return IsInLengthInfo(name, sLengthInfo) ||
+ SVGImageElementBase::IsAttributeMapped(name);
+}
+
+//----------------------------------------------------------------------
+// SVGElement methods
+
+/* virtual */
+bool SVGImageElement::HasValidDimensions() const {
+ float width, height;
+
+ if (SVGGeometryProperty::ResolveAll<SVGT::Width, SVGT::Height>(this, &width,
+ &height)) {
+ return width > 0 && height > 0;
+ }
+ // This function might be called for an element in display:none subtree
+ // (e.g. SMIL animateMotion), we fall back to use SVG attributes.
+ return (!mLengthAttributes[ATTR_WIDTH].IsExplicitlySet() ||
+ mLengthAttributes[ATTR_WIDTH].GetAnimValInSpecifiedUnits() > 0) &&
+ (!mLengthAttributes[ATTR_HEIGHT].IsExplicitlySet() ||
+ mLengthAttributes[ATTR_HEIGHT].GetAnimValInSpecifiedUnits() > 0);
+}
+
+SVGElement::LengthAttributesInfo SVGImageElement::GetLengthInfo() {
+ return LengthAttributesInfo(mLengthAttributes, sLengthInfo,
+ ArrayLength(sLengthInfo));
+}
+
+SVGAnimatedPreserveAspectRatio*
+SVGImageElement::GetAnimatedPreserveAspectRatio() {
+ return &mPreserveAspectRatio;
+}
+
+SVGElement::StringAttributesInfo SVGImageElement::GetStringInfo() {
+ return StringAttributesInfo(mStringAttributes, sStringInfo,
+ ArrayLength(sStringInfo));
+}
+
+} // namespace mozilla::dom