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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "nsContainerFrame.h"
#include "nsGkAtoms.h"
#include "nsIFrame.h"
#include "nsLiteralString.h"
#include "nsSVGEffects.h"
#include "nsSVGFilters.h"
/*
* This frame is used by filter primitive elements that
* have special child elements that provide parameters.
*/
class SVGFEContainerFrame : public nsContainerFrame
{
friend nsIFrame*
NS_NewSVGFEContainerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
protected:
explicit SVGFEContainerFrame(nsStyleContext* aContext)
: nsContainerFrame(aContext)
{
AddStateBits(NS_FRAME_SVG_LAYOUT | NS_FRAME_IS_NONDISPLAY);
}
public:
NS_DECL_FRAMEARENA_HELPERS
virtual bool IsFrameOfType(uint32_t aFlags) const override
{
return nsContainerFrame::IsFrameOfType(
aFlags & ~(nsIFrame::eSVG | nsIFrame::eSVGContainer));
}
#ifdef DEBUG_FRAME_DUMP
virtual nsresult GetFrameName(nsAString& aResult) const override
{
return MakeFrameName(NS_LITERAL_STRING("SVGFEContainer"), aResult);
}
#endif
#ifdef DEBUG
virtual void Init(nsIContent* aContent,
nsContainerFrame* aParent,
nsIFrame* aPrevInFlow) override;
#endif
/**
* Get the "type" of the frame
*
* @see nsGkAtoms::svgFEContainerFrame
*/
virtual nsIAtom* GetType() const override;
virtual nsresult AttributeChanged(int32_t aNameSpaceID,
nsIAtom* aAttribute,
int32_t aModType) override;
virtual bool ComputeCustomOverflow(nsOverflowAreas& aOverflowAreas) override {
// We don't maintain a visual overflow rect
return false;
}
};
nsIFrame*
NS_NewSVGFEContainerFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) SVGFEContainerFrame(aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(SVGFEContainerFrame)
#ifdef DEBUG
void
SVGFEContainerFrame::Init(nsIContent* aContent,
nsContainerFrame* aParent,
nsIFrame* aPrevInFlow)
{
NS_ASSERTION(aContent->IsNodeOfType(nsINode::eFILTER),
"Trying to construct an SVGFEContainerFrame for a "
"content element that doesn't support the right interfaces");
nsContainerFrame::Init(aContent, aParent, aPrevInFlow);
}
#endif /* DEBUG */
nsIAtom *
SVGFEContainerFrame::GetType() const
{
return nsGkAtoms::svgFEContainerFrame;
}
nsresult
SVGFEContainerFrame::AttributeChanged(int32_t aNameSpaceID,
nsIAtom* aAttribute,
int32_t aModType)
{
nsSVGFE *element = static_cast<nsSVGFE*>(mContent);
if (element->AttributeAffectsRendering(aNameSpaceID, aAttribute)) {
MOZ_ASSERT(GetParent()->GetType() == nsGkAtoms::svgFilterFrame,
"Observers observe the filter, so that's what we must invalidate");
nsSVGEffects::InvalidateDirectRenderingObservers(GetParent());
}
return nsContainerFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
}
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