зеркало из https://github.com/mozilla/gecko-dev.git
138 строки
4.8 KiB
C++
138 строки
4.8 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/. */
|
|
|
|
// Keep in (case-insensitive) order:
|
|
#include "mozilla/PresShell.h"
|
|
#include "mozilla/SVGObserverUtils.h"
|
|
#include "mozilla/dom/SVGFEImageElement.h"
|
|
#include "mozilla/dom/MutationEventBinding.h"
|
|
#include "nsContainerFrame.h"
|
|
#include "nsIFrame.h"
|
|
#include "nsGkAtoms.h"
|
|
#include "nsLiteralString.h"
|
|
|
|
using namespace mozilla::dom;
|
|
|
|
nsIFrame* NS_NewSVGFEImageFrame(mozilla::PresShell* aPresShell,
|
|
mozilla::ComputedStyle* aStyle);
|
|
|
|
namespace mozilla {
|
|
|
|
class SVGFEImageFrame final : public nsIFrame {
|
|
friend nsIFrame* ::NS_NewSVGFEImageFrame(mozilla::PresShell* aPresShell,
|
|
ComputedStyle* aStyle);
|
|
|
|
protected:
|
|
explicit SVGFEImageFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
|
|
: nsIFrame(aStyle, aPresContext, kClassID) {
|
|
AddStateBits(NS_FRAME_SVG_LAYOUT | NS_FRAME_IS_NONDISPLAY);
|
|
|
|
// This frame isn't actually displayed, but it contains an image and we want
|
|
// to use the nsImageLoadingContent machinery for managing images, which
|
|
// requires visibility tracking, so we enable visibility tracking and
|
|
// forcibly mark it visible below.
|
|
EnableVisibilityTracking();
|
|
}
|
|
|
|
public:
|
|
NS_DECL_FRAMEARENA_HELPERS(SVGFEImageFrame)
|
|
|
|
void Init(nsIContent* aContent, nsContainerFrame* aParent,
|
|
nsIFrame* aPrevInFlow) override;
|
|
void Destroy(DestroyContext&) override;
|
|
|
|
#ifdef DEBUG_FRAME_DUMP
|
|
nsresult GetFrameName(nsAString& aResult) const override {
|
|
return MakeFrameName(u"SVGFEImage"_ns, aResult);
|
|
}
|
|
#endif
|
|
|
|
nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
|
|
int32_t aModType) override;
|
|
|
|
void OnVisibilityChange(
|
|
Visibility aNewVisibility,
|
|
const Maybe<OnNonvisible>& aNonvisibleAction = Nothing()) override;
|
|
|
|
bool ComputeCustomOverflow(OverflowAreas& aOverflowAreas) override {
|
|
// We don't maintain a ink overflow rect
|
|
return false;
|
|
}
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
nsIFrame* NS_NewSVGFEImageFrame(mozilla::PresShell* aPresShell,
|
|
mozilla::ComputedStyle* aStyle) {
|
|
return new (aPresShell)
|
|
mozilla::SVGFEImageFrame(aStyle, aPresShell->GetPresContext());
|
|
}
|
|
|
|
namespace mozilla {
|
|
|
|
NS_IMPL_FRAMEARENA_HELPERS(SVGFEImageFrame)
|
|
|
|
/* virtual */
|
|
void SVGFEImageFrame::Destroy(DestroyContext& aContext) {
|
|
DecApproximateVisibleCount();
|
|
|
|
nsCOMPtr<nsIImageLoadingContent> imageLoader = do_QueryInterface(mContent);
|
|
if (imageLoader) {
|
|
imageLoader->FrameDestroyed(this);
|
|
}
|
|
|
|
nsIFrame::Destroy(aContext);
|
|
}
|
|
|
|
void SVGFEImageFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
|
|
nsIFrame* aPrevInFlow) {
|
|
NS_ASSERTION(aContent->IsSVGElement(nsGkAtoms::feImage),
|
|
"Trying to construct an SVGFEImageFrame for a "
|
|
"content element that doesn't support the right interfaces");
|
|
|
|
nsIFrame::Init(aContent, aParent, aPrevInFlow);
|
|
|
|
// We assume that feImage's are always visible.
|
|
// This call must happen before the FrameCreated. This is because the
|
|
// primary frame pointer on our content node isn't set until after this
|
|
// function ends, so there is no way for the resulting OnVisibilityChange
|
|
// notification to get a frame. FrameCreated has a workaround for this in
|
|
// that it passes our frame around so it can be accessed. OnVisibilityChange
|
|
// doesn't have that workaround.
|
|
IncApproximateVisibleCount();
|
|
|
|
nsCOMPtr<nsIImageLoadingContent> imageLoader = do_QueryInterface(mContent);
|
|
if (imageLoader) {
|
|
imageLoader->FrameCreated(this);
|
|
}
|
|
}
|
|
|
|
nsresult SVGFEImageFrame::AttributeChanged(int32_t aNameSpaceID,
|
|
nsAtom* aAttribute,
|
|
int32_t aModType) {
|
|
SVGFEImageElement* element = static_cast<SVGFEImageElement*>(GetContent());
|
|
if (element->AttributeAffectsRendering(aNameSpaceID, aAttribute)) {
|
|
MOZ_ASSERT(
|
|
GetParent()->IsSVGFilterFrame(),
|
|
"Observers observe the filter, so that's what we must invalidate");
|
|
SVGObserverUtils::InvalidateRenderingObservers(GetParent());
|
|
}
|
|
|
|
return nsIFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
|
|
}
|
|
|
|
void SVGFEImageFrame::OnVisibilityChange(
|
|
Visibility aNewVisibility, const Maybe<OnNonvisible>& aNonvisibleAction) {
|
|
nsCOMPtr<nsIImageLoadingContent> imageLoader = do_QueryInterface(mContent);
|
|
if (imageLoader) {
|
|
imageLoader->OnVisibilityChange(aNewVisibility, aNonvisibleAction);
|
|
}
|
|
|
|
nsIFrame::OnVisibilityChange(aNewVisibility, aNonvisibleAction);
|
|
}
|
|
|
|
} // namespace mozilla
|