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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/. */
#ifndef __NS_SVGFILTERFRAME_H__
#define __NS_SVGFILTERFRAME_H__
#include "nsFrame.h"
#include "nsQueryFrame.h"
#include "nsRect.h"
#include "nsSVGContainerFrame.h"
#include "nsSVGUtils.h"
class nsIAtom;
class nsIContent;
class nsIFrame;
class nsIPresShell;
class nsRenderingContext;
class nsStyleContext;
class nsSVGFilterPaintCallback;
class nsSVGIntegerPair;
class nsSVGLength2;
namespace mozilla {
namespace dom {
class SVGFilterElement;
}
}
typedef nsSVGContainerFrame nsSVGFilterFrameBase;
class nsSVGFilterFrame : public nsSVGFilterFrameBase
{
friend nsIFrame*
NS_NewSVGFilterFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
protected:
nsSVGFilterFrame(nsStyleContext* aContext)
: nsSVGFilterFrameBase(aContext),
mLoopFlag(false),
mNoHRefURI(false)
{
AddStateBits(NS_STATE_SVG_NONDISPLAY_CHILD);
}
public:
NS_DECL_FRAMEARENA_HELPERS
// nsIFrame methods:
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists) MOZ_OVERRIDE {}
NS_IMETHOD AttributeChanged(int32_t aNameSpaceID,
nsIAtom* aAttribute,
int32_t aModType);
/**
* Paint the given filtered frame.
* @param aDirtyArea The area than needs to be painted, in aFilteredFrame's
* frame space (i.e. relative to its origin, the top-left corner of its
* border box).
*/
nsresult PaintFilteredFrame(nsRenderingContext *aContext,
nsIFrame *aFilteredFrame,
nsSVGFilterPaintCallback *aPaintCallback,
const nsRect* aDirtyArea);
/**
* Returns the post-filter area that could be dirtied when the given
* pre-filter area of aFilteredFrame changes.
* @param aPreFilterDirtyRect The pre-filter area of aFilteredFrame that has
* changed, relative to aFilteredFrame, in app units.
*/
nsRect GetPostFilterDirtyArea(nsIFrame *aFilteredFrame,
const nsRect& aPreFilterDirtyRect);
/**
* Returns the pre-filter area that is needed from aFilteredFrame when the
* given post-filter area needs to be repainted.
* @param aPostFilterDirtyRect The post-filter area that is dirty, relative
* to aFilteredFrame, in app units.
*/
nsRect GetPreFilterNeededArea(nsIFrame *aFilteredFrame,
const nsRect& aPostFilterDirtyRect);
/**
* Returns the post-filter visual overflow rect (paint bounds) of
* aFilteredFrame.
* @param aOverrideBBox A user space rect, in user units, that should be used
* as aFilteredFrame's bbox ('bbox' is a specific SVG term), if non-null.
* @param aPreFilterBounds The pre-filter visual overflow rect of
* aFilteredFrame, if non-null.
*/
nsRect GetPostFilterBounds(nsIFrame *aFilteredFrame,
const gfxRect *aOverrideBBox = nullptr,
const nsRect *aPreFilterBounds = nullptr);
#ifdef DEBUG
NS_IMETHOD Init(nsIContent* aContent,
nsIFrame* aParent,
nsIFrame* aPrevInFlow);
#endif
/**
* Get the "type" of the frame
*
* @see nsGkAtoms::svgFilterFrame
*/
virtual nsIAtom* GetType() const;
private:
// Parse our xlink:href and set up our nsSVGPaintingProperty if we
// reference another filter and we don't have a property. Return
// the referenced filter's frame if available, null otherwise.
class AutoFilterReferencer;
friend class nsAutoFilterInstance;
nsSVGFilterFrame* GetReferencedFilter();
nsSVGFilterFrame* GetReferencedFilterIfNotInUse();
// Accessors to lookup filter attributes
uint16_t GetEnumValue(uint32_t aIndex, nsIContent *aDefault);
uint16_t GetEnumValue(uint32_t aIndex)
{
return GetEnumValue(aIndex, mContent);
}
const nsSVGIntegerPair *GetIntegerPairValue(uint32_t aIndex, nsIContent *aDefault);
const nsSVGIntegerPair *GetIntegerPairValue(uint32_t aIndex)
{
return GetIntegerPairValue(aIndex, mContent);
}
const nsSVGLength2 *GetLengthValue(uint32_t aIndex, nsIContent *aDefault);
const nsSVGLength2 *GetLengthValue(uint32_t aIndex)
{
return GetLengthValue(aIndex, mContent);
}
const mozilla::dom::SVGFilterElement *GetFilterContent(nsIContent *aDefault);
const mozilla::dom::SVGFilterElement *GetFilterContent()
{
return GetFilterContent(mContent);
}
// This flag is used to detect loops in xlink:href processing
bool mLoopFlag;
bool mNoHRefURI;
};
#endif
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