зеркало из https://github.com/mozilla/gecko-dev.git
108 строки
2.9 KiB
C++
108 строки
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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// Keep in (case-insensitive) order:
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#include "nsFrame.h"
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#include "nsGkAtoms.h"
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#include "nsSVGEffects.h"
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#include "nsSVGFilters.h"
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typedef nsFrame SVGFELeafFrameBase;
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/*
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* This frame is used by filter primitive elements that don't
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* have special child elements that provide parameters.
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*/
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class SVGFELeafFrame : public SVGFELeafFrameBase
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{
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friend nsIFrame*
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NS_NewSVGFELeafFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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protected:
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SVGFELeafFrame(nsStyleContext* aContext)
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: SVGFELeafFrameBase(aContext)
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{
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AddStateBits(NS_FRAME_SVG_LAYOUT | NS_FRAME_IS_NONDISPLAY);
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}
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public:
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NS_DECL_FRAMEARENA_HELPERS
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#ifdef DEBUG
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virtual void Init(nsIContent* aContent,
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nsIFrame* aParent,
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nsIFrame* aPrevInFlow) MOZ_OVERRIDE;
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#endif
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virtual bool IsFrameOfType(uint32_t aFlags) const
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{
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return SVGFELeafFrameBase::IsFrameOfType(aFlags & ~(nsIFrame::eSVG));
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}
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#ifdef DEBUG
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NS_IMETHOD GetFrameName(nsAString& aResult) const
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{
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return MakeFrameName(NS_LITERAL_STRING("SVGFELeaf"), aResult);
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}
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#endif
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/**
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* Get the "type" of the frame
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*
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* @see nsGkAtoms::svgFELeafFrame
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*/
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virtual nsIAtom* GetType() const;
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NS_IMETHOD AttributeChanged(int32_t aNameSpaceID,
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nsIAtom* aAttribute,
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int32_t aModType);
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virtual bool UpdateOverflow() {
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// We don't maintain a visual overflow rect
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return false;
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}
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};
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nsIFrame*
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NS_NewSVGFELeafFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) SVGFELeafFrame(aContext);
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}
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NS_IMPL_FRAMEARENA_HELPERS(SVGFELeafFrame)
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#ifdef DEBUG
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void
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SVGFELeafFrame::Init(nsIContent* aContent,
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nsIFrame* aParent,
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nsIFrame* aPrevInFlow)
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{
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NS_ASSERTION(aContent->IsNodeOfType(nsINode::eFILTER),
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"Trying to construct an SVGFELeafFrame for a "
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"content element that doesn't support the right interfaces");
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SVGFELeafFrameBase::Init(aContent, aParent, aPrevInFlow);
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}
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#endif /* DEBUG */
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nsIAtom *
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SVGFELeafFrame::GetType() const
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{
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return nsGkAtoms::svgFELeafFrame;
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}
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NS_IMETHODIMP
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SVGFELeafFrame::AttributeChanged(int32_t aNameSpaceID,
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nsIAtom* aAttribute,
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int32_t aModType)
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{
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nsSVGFE *element = static_cast<nsSVGFE*>(mContent);
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if (element->AttributeAffectsRendering(aNameSpaceID, aAttribute)) {
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nsSVGEffects::InvalidateRenderingObservers(this);
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}
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return SVGFELeafFrameBase::AttributeChanged(aNameSpaceID,
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aAttribute, aModType);
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}
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