/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is the Mozilla SVG project.
 *
 * The Initial Developer of the Original Code is IBM Corporation.
 * Portions created by the Initial Developer are Copyright (C) 2005
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of the GNU General Public License Version 2 or later (the "GPL"),
 * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef __NS_SVGFILTERFRAME_H__
#define __NS_SVGFILTERFRAME_H__

#include "nsRect.h"
#include "nsSVGContainerFrame.h"

class nsSVGRenderState;
class nsSVGFilterPaintCallback;

typedef nsSVGContainerFrame nsSVGFilterFrameBase;
class nsSVGFilterFrame : public nsSVGFilterFrameBase
{
  friend nsIFrame*
  NS_NewSVGFilterFrame(nsIPresShell* aPresShell, nsIContent* aContent, nsStyleContext* aContext);
protected:
  nsSVGFilterFrame(nsStyleContext* aContext) : nsSVGFilterFrameBase(aContext) {}

public:
  nsresult FilterPaint(nsSVGRenderState *aContext,
                       nsIFrame *aTarget, nsSVGFilterPaintCallback *aPaintCallback,
                       const nsIntRect* aDirtyRect);

  /**
   * Returns the area that could change when the given rect of the source changes.
   * The rectangles are relative to the origin of the outer svg, if aTarget is SVG,
   * relative to aTarget itself otherwise, in device pixels.
   */
  nsIntRect GetInvalidationBBox(nsIFrame *aTarget, const nsIntRect& aRect);

  /**
   * Returns the area in device pixels that is needed from the source when
   * the given area needs to be repainted.
   * The rectangles are relative to the origin of the outer svg, if aTarget is SVG,
   * relative to aTarget itself otherwise, in device pixels.
   */
  nsIntRect GetSourceForInvalidArea(nsIFrame *aTarget, const nsIntRect& aRect);

  /**
   * Returns the bounding box of the post-filter area of aTarget.
   * The rectangles are relative to the origin of the outer svg, if aTarget is SVG,
   * relative to aTarget itself otherwise, in device pixels.
   * @param aSourceBBox overrides the normal bbox for the source, if non-null
   */
  nsIntRect GetFilterBBox(nsIFrame *aTarget, const nsIntRect *aSourceBBox);

  /**
   * Get the "type" of the frame
   *
   * @see nsGkAtoms::svgFilterFrame
   */
  virtual nsIAtom* GetType() const;
};

#endif
