зеркало из https://github.com/mozilla/gecko-dev.git
364 строки
12 KiB
C++
364 строки
12 KiB
C++
/* -*- 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/SVGFEImageElement.h"
|
|
|
|
#include "mozilla/EventStates.h"
|
|
#include "mozilla/SVGObserverUtils.h"
|
|
#include "mozilla/dom/Document.h"
|
|
#include "mozilla/dom/BindContext.h"
|
|
#include "mozilla/dom/SVGFEImageElementBinding.h"
|
|
#include "mozilla/dom/SVGFilterElement.h"
|
|
#include "mozilla/dom/UserActivation.h"
|
|
#include "mozilla/gfx/2D.h"
|
|
#include "mozilla/RefPtr.h"
|
|
#include "nsContentUtils.h"
|
|
#include "nsLayoutUtils.h"
|
|
#include "nsNetUtil.h"
|
|
#include "imgIContainer.h"
|
|
#include "gfx2DGlue.h"
|
|
|
|
NS_IMPL_NS_NEW_SVG_ELEMENT(FEImage)
|
|
|
|
using namespace mozilla::gfx;
|
|
|
|
namespace mozilla {
|
|
namespace dom {
|
|
|
|
JSObject* SVGFEImageElement::WrapNode(JSContext* aCx,
|
|
JS::Handle<JSObject*> aGivenProto) {
|
|
return SVGFEImageElement_Binding::Wrap(aCx, this, aGivenProto);
|
|
}
|
|
|
|
SVGElement::StringInfo SVGFEImageElement::sStringInfo[3] = {
|
|
{nsGkAtoms::result, kNameSpaceID_None, true},
|
|
{nsGkAtoms::href, kNameSpaceID_None, true},
|
|
{nsGkAtoms::href, kNameSpaceID_XLink, true}};
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsISupports methods
|
|
|
|
NS_IMPL_ISUPPORTS_INHERITED(SVGFEImageElement, SVGFEImageElementBase,
|
|
imgINotificationObserver, nsIImageLoadingContent)
|
|
|
|
//----------------------------------------------------------------------
|
|
// Implementation
|
|
|
|
SVGFEImageElement::SVGFEImageElement(
|
|
already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo)
|
|
: SVGFEImageElementBase(std::move(aNodeInfo)), mImageAnimationMode(0) {
|
|
// We start out broken
|
|
AddStatesSilently(NS_EVENT_STATE_BROKEN);
|
|
}
|
|
|
|
SVGFEImageElement::~SVGFEImageElement() { nsImageLoadingContent::Destroy(); }
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
nsresult SVGFEImageElement::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);
|
|
|
|
// Make sure we don't get in a recursive death-spiral
|
|
Document* doc = OwnerDoc();
|
|
nsCOMPtr<nsIURI> hrefAsURI;
|
|
if (NS_SUCCEEDED(StringToURI(href, doc, getter_AddRefs(hrefAsURI)))) {
|
|
bool isEqual;
|
|
if (NS_SUCCEEDED(hrefAsURI->Equals(baseURI, &isEqual)) && isEqual) {
|
|
// Image URI matches our URI exactly! Bail out.
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// 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 SVGFEImageElement::ShouldLoadImage() const {
|
|
return LoadingEnabled() && OwnerDoc()->ShouldLoadImages();
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// EventTarget methods:
|
|
|
|
void SVGFEImageElement::AsyncEventRunning(AsyncEventDispatcher* aEvent) {
|
|
nsImageLoadingContent::AsyncEventRunning(aEvent);
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsIContent methods:
|
|
|
|
NS_IMETHODIMP_(bool)
|
|
SVGFEImageElement::IsAttributeMapped(const nsAtom* name) const {
|
|
static const MappedAttributeEntry* const map[] = {sGraphicsMap};
|
|
|
|
return FindAttributeDependence(name, map) ||
|
|
SVGFEImageElementBase::IsAttributeMapped(name);
|
|
}
|
|
|
|
nsresult SVGFEImageElement::AfterSetAttr(int32_t aNamespaceID, nsAtom* aName,
|
|
const nsAttrValue* aValue,
|
|
const nsAttrValue* aOldValue,
|
|
nsIPrincipal* aSubjectPrincipal,
|
|
bool aNotify) {
|
|
if (aName == nsGkAtoms::href && (aNamespaceID == kNameSpaceID_XLink ||
|
|
aNamespaceID == kNameSpaceID_None)) {
|
|
if (aValue) {
|
|
if (ShouldLoadImage()) {
|
|
LoadSVGImage(true, aNotify);
|
|
}
|
|
} else {
|
|
CancelImageRequests(aNotify);
|
|
}
|
|
}
|
|
|
|
return SVGFEImageElementBase::AfterSetAttr(
|
|
aNamespaceID, aName, aValue, aOldValue, aSubjectPrincipal, aNotify);
|
|
}
|
|
|
|
void SVGFEImageElement::MaybeLoadSVGImage() {
|
|
if ((mStringAttributes[HREF].IsExplicitlySet() ||
|
|
mStringAttributes[XLINK_HREF].IsExplicitlySet()) &&
|
|
(NS_FAILED(LoadSVGImage(false, true)) || !LoadingEnabled())) {
|
|
CancelImageRequests(true);
|
|
}
|
|
}
|
|
|
|
nsresult SVGFEImageElement::BindToTree(BindContext& aContext,
|
|
nsINode& aParent) {
|
|
nsresult rv = SVGFEImageElementBase::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::SVGFEImageElement::MaybeLoadSVGImage", this,
|
|
&SVGFEImageElement::MaybeLoadSVGImage));
|
|
}
|
|
|
|
if (aContext.InComposedDoc()) {
|
|
aContext.OwnerDoc().SetUseCounter(eUseCounter_custom_feImage);
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
void SVGFEImageElement::UnbindFromTree(bool aNullParent) {
|
|
nsImageLoadingContent::UnbindFromTree(aNullParent);
|
|
SVGFEImageElementBase::UnbindFromTree(aNullParent);
|
|
}
|
|
|
|
EventStates SVGFEImageElement::IntrinsicState() const {
|
|
return SVGFEImageElementBase::IntrinsicState() |
|
|
nsImageLoadingContent::ImageState();
|
|
}
|
|
|
|
void SVGFEImageElement::DestroyContent() {
|
|
nsImageLoadingContent::Destroy();
|
|
SVGFEImageElementBase::DestroyContent();
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsINode methods
|
|
|
|
NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGFEImageElement)
|
|
|
|
already_AddRefed<DOMSVGAnimatedString> SVGFEImageElement::Href() {
|
|
return mStringAttributes[HREF].IsExplicitlySet()
|
|
? mStringAttributes[HREF].ToDOMAnimatedString(this)
|
|
: mStringAttributes[XLINK_HREF].ToDOMAnimatedString(this);
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsIDOMSVGFEImageElement methods
|
|
|
|
FilterPrimitiveDescription SVGFEImageElement::GetPrimitiveDescription(
|
|
SVGFilterInstance* aInstance, const IntRect& aFilterSubregion,
|
|
const nsTArray<bool>& aInputsAreTainted,
|
|
nsTArray<RefPtr<SourceSurface>>& aInputImages) {
|
|
nsIFrame* frame = GetPrimaryFrame();
|
|
if (!frame) {
|
|
return FilterPrimitiveDescription();
|
|
}
|
|
|
|
nsCOMPtr<imgIRequest> currentRequest;
|
|
GetRequest(nsIImageLoadingContent::CURRENT_REQUEST,
|
|
getter_AddRefs(currentRequest));
|
|
|
|
nsCOMPtr<imgIContainer> imageContainer;
|
|
if (currentRequest) {
|
|
currentRequest->GetImage(getter_AddRefs(imageContainer));
|
|
}
|
|
|
|
RefPtr<SourceSurface> image;
|
|
if (imageContainer) {
|
|
uint32_t flags =
|
|
imgIContainer::FLAG_SYNC_DECODE | imgIContainer::FLAG_ASYNC_NOTIFY;
|
|
image = imageContainer->GetFrame(imgIContainer::FRAME_CURRENT, flags);
|
|
}
|
|
|
|
if (!image) {
|
|
return FilterPrimitiveDescription();
|
|
}
|
|
|
|
IntSize nativeSize;
|
|
imageContainer->GetWidth(&nativeSize.width);
|
|
imageContainer->GetHeight(&nativeSize.height);
|
|
|
|
Matrix viewBoxTM = SVGContentUtils::GetViewBoxTransform(
|
|
aFilterSubregion.width, aFilterSubregion.height, 0, 0, nativeSize.width,
|
|
nativeSize.height, mPreserveAspectRatio);
|
|
Matrix TM = viewBoxTM;
|
|
TM.PostTranslate(aFilterSubregion.x, aFilterSubregion.y);
|
|
|
|
SamplingFilter samplingFilter =
|
|
nsLayoutUtils::GetSamplingFilterForFrame(frame);
|
|
|
|
ImageAttributes atts;
|
|
atts.mFilter = (uint32_t)samplingFilter;
|
|
atts.mTransform = TM;
|
|
|
|
// Append the image to aInputImages and store its index in the description.
|
|
size_t imageIndex = aInputImages.Length();
|
|
aInputImages.AppendElement(image);
|
|
atts.mInputIndex = (uint32_t)imageIndex;
|
|
return FilterPrimitiveDescription(AsVariant(std::move(atts)));
|
|
}
|
|
|
|
bool SVGFEImageElement::AttributeAffectsRendering(int32_t aNameSpaceID,
|
|
nsAtom* aAttribute) const {
|
|
// nsGkAtoms::href is deliberately omitted as the frame has special
|
|
// handling to load the image
|
|
return SVGFEImageElementBase::AttributeAffectsRendering(aNameSpaceID,
|
|
aAttribute) ||
|
|
(aNameSpaceID == kNameSpaceID_None &&
|
|
aAttribute == nsGkAtoms::preserveAspectRatio);
|
|
}
|
|
|
|
bool SVGFEImageElement::OutputIsTainted(const nsTArray<bool>& aInputsAreTainted,
|
|
nsIPrincipal* aReferencePrincipal) {
|
|
nsresult rv;
|
|
nsCOMPtr<imgIRequest> currentRequest;
|
|
GetRequest(nsIImageLoadingContent::CURRENT_REQUEST,
|
|
getter_AddRefs(currentRequest));
|
|
|
|
if (!currentRequest) {
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<nsIPrincipal> principal;
|
|
rv = currentRequest->GetImagePrincipal(getter_AddRefs(principal));
|
|
if (NS_FAILED(rv) || !principal) {
|
|
return true;
|
|
}
|
|
|
|
int32_t corsmode;
|
|
if (NS_SUCCEEDED(currentRequest->GetCORSMode(&corsmode)) &&
|
|
corsmode != CORS_NONE) {
|
|
// If CORS was used to load the image, the page is allowed to read from it.
|
|
return false;
|
|
}
|
|
|
|
if (aReferencePrincipal->Subsumes(principal)) {
|
|
// The page is allowed to read from the image.
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// SVGElement methods
|
|
|
|
already_AddRefed<DOMSVGAnimatedPreserveAspectRatio>
|
|
SVGFEImageElement::PreserveAspectRatio() {
|
|
return mPreserveAspectRatio.ToDOMAnimatedPreserveAspectRatio(this);
|
|
}
|
|
|
|
SVGAnimatedPreserveAspectRatio*
|
|
SVGFEImageElement::GetAnimatedPreserveAspectRatio() {
|
|
return &mPreserveAspectRatio;
|
|
}
|
|
|
|
SVGElement::StringAttributesInfo SVGFEImageElement::GetStringInfo() {
|
|
return StringAttributesInfo(mStringAttributes, sStringInfo,
|
|
ArrayLength(sStringInfo));
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// nsIImageLoadingContent methods
|
|
NS_IMETHODIMP_(void)
|
|
SVGFEImageElement::FrameCreated(nsIFrame* aFrame) {
|
|
nsImageLoadingContent::FrameCreated(aFrame);
|
|
|
|
uint64_t mode = aFrame->PresContext()->ImageAnimationMode();
|
|
if (mode == mImageAnimationMode) {
|
|
return;
|
|
}
|
|
|
|
mImageAnimationMode = mode;
|
|
|
|
if (mPendingRequest) {
|
|
nsCOMPtr<imgIContainer> container;
|
|
mPendingRequest->GetImage(getter_AddRefs(container));
|
|
if (container) {
|
|
container->SetAnimationMode(mode);
|
|
}
|
|
}
|
|
|
|
if (mCurrentRequest) {
|
|
nsCOMPtr<imgIContainer> container;
|
|
mCurrentRequest->GetImage(getter_AddRefs(container));
|
|
if (container) {
|
|
container->SetAnimationMode(mode);
|
|
}
|
|
}
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// imgINotificationObserver methods
|
|
|
|
void SVGFEImageElement::Notify(imgIRequest* aRequest, int32_t aType,
|
|
const nsIntRect* aData) {
|
|
nsImageLoadingContent::Notify(aRequest, aType, aData);
|
|
|
|
if (aType == imgINotificationObserver::SIZE_AVAILABLE) {
|
|
// Request a decode
|
|
nsCOMPtr<imgIContainer> container;
|
|
aRequest->GetImage(getter_AddRefs(container));
|
|
MOZ_ASSERT(container, "who sent the notification then?");
|
|
container->StartDecoding(imgIContainer::FLAG_NONE);
|
|
container->SetAnimationMode(mImageAnimationMode);
|
|
}
|
|
|
|
if (aType == imgINotificationObserver::LOAD_COMPLETE ||
|
|
aType == imgINotificationObserver::FRAME_UPDATE ||
|
|
aType == imgINotificationObserver::SIZE_AVAILABLE) {
|
|
if (GetParent() && GetParent()->IsSVGElement(nsGkAtoms::filter)) {
|
|
SVGObserverUtils::InvalidateDirectRenderingObservers(
|
|
static_cast<SVGFilterElement*>(GetParent()));
|
|
}
|
|
}
|
|
}
|
|
|
|
} // namespace dom
|
|
} // namespace mozilla
|