diff options
Diffstat (limited to 'dom/svg/SVGImageElement.cpp')
| -rw-r--r-- | dom/svg/SVGImageElement.cpp | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/dom/svg/SVGImageElement.cpp b/dom/svg/SVGImageElement.cpp new file mode 100644 index 0000000000..425ab48039 --- /dev/null +++ b/dom/svg/SVGImageElement.cpp @@ -0,0 +1,321 @@ +/* -*- 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/EventStates.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 { +namespace 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(NS_EVENT_STATE_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(); +} + +//---------------------------------------------------------------------- +// EventTarget methods: + +void SVGImageElement::AsyncEventRunning(AsyncEventDispatcher* aEvent) { + nsImageLoadingContent::AsyncEventRunning(aEvent); +} + +//---------------------------------------------------------------------- +// nsIContent methods: + +bool SVGImageElement::ParseAttribute(int32_t aNamespaceID, nsAtom* aAttribute, + const nsAString& aValue, + nsIPrincipal* aMaybeScriptedPrincipal, + nsAttrValue& aResult) { + if (aNamespaceID == kNameSpaceID_None) { + if (aAttribute == nsGkAtoms::decoding) { + return aResult.ParseEnumValue(aValue, kDecodingTable, false, + kDecodingTableDefault); + } + } + + return SVGImageElementBase::ParseAttribute(aNamespaceID, aAttribute, aValue, + aMaybeScriptedPrincipal, aResult); +} + +nsresult 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 (aName == nsGkAtoms::decoding && + aNamespaceID == kNameSpaceID_None) { + // Request sync or async image decoding. + SetSyncDecodingHint( + aValue && static_cast<ImageDecodingType>(aValue->GetEnumValue()) == + ImageDecodingType::Sync); + } + 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); +} + +EventStates SVGImageElement::IntrinsicState() const { + return SVGImageElementBase::IntrinsicState() | + nsImageLoadingContent::ImageState(); +} + +void SVGImageElement::DestroyContent() { + nsImageLoadingContent::Destroy(); + SVGImageElementBase::DestroyContent(); +} + +NS_IMETHODIMP_(bool) +SVGImageElement::IsAttributeMapped(const nsAtom* name) const { + static const MappedAttributeEntry* const map[] = { + sViewportsMap, + }; + + return IsInLengthInfo(name, sLengthInfo) || + FindAttributeDependence(name, map) || + SVGImageElementBase::IsAttributeMapped(name); +} + +//---------------------------------------------------------------------- +// SVGGeometryElement methods + +/* For the purposes of the update/invalidation logic pretend to + be a rectangle. */ +bool SVGImageElement::GetGeometryBounds( + Rect* aBounds, const StrokeOptions& aStrokeOptions, + const Matrix& aToBoundsSpace, const Matrix* aToNonScalingStrokeSpace) { + 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 + } + + *aBounds = aToBoundsSpace.TransformBounds(rect); + return true; +} + +already_AddRefed<Path> SVGImageElement::BuildPath(PathBuilder* aBuilder) { + // To get bound, the faster method GetGeometryBounds() should already return + // success. For render and hittest, SVGImageFrame should have its own + // implementation that doesn't need to build path for an image. + MOZ_ASSERT_UNREACHABLE( + "There is no reason to call BuildPath for SVGImageElement"); + return nullptr; +} + +//---------------------------------------------------------------------- +// SVGElement methods + +/* virtual */ +bool SVGImageElement::HasValidDimensions() const { + float width, height; + + DebugOnly<bool> ok = + SVGGeometryProperty::ResolveAll<SVGT::Width, SVGT::Height>(this, &width, + &height); + MOZ_ASSERT(ok, "SVGGeometryProperty::ResolveAll failed"); + + return width > 0 && height > 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 dom +} // namespace mozilla |