gecko/layout/svg/base/src/nsSVGTSpanFrame.h

/* -*- 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
 * Crocodile Clips Ltd..
 * Portions created by the Initial Developer are Copyright (C) 2002
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Alex Fritze <alex.fritze@crocodile-clips.com> (original author)
 *
 * 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
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 * ***** END LICENSE BLOCK ***** */

#ifndef NSSVGTSPANFRAME_H
#define NSSVGTSPANFRAME_H

#include "gfxMatrix.h"
#include "nsFrame.h"
#include "nsISVGGlyphFragmentNode.h"
#include "nsLiteralString.h"
#include "nsQueryFrame.h"
#include "nsSVGTextContainerFrame.h"

class nsIAtom;
class nsIContent;
class nsIDOMSVGPoint;
class nsIFrame;
class nsIPresShell;
class nsStyleContext;
class nsSVGGlyphFrame;

typedef nsSVGTextContainerFrame nsSVGTSpanFrameBase;

class nsSVGTSpanFrame : public nsSVGTSpanFrameBase,
                        public nsISVGGlyphFragmentNode
{
  friend nsIFrame*
  NS_NewSVGTSpanFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
protected:
  nsSVGTSpanFrame(nsStyleContext* aContext) :
    nsSVGTSpanFrameBase(aContext) {}

public:
  NS_DECL_QUERYFRAME
  NS_DECL_FRAMEARENA_HELPERS

  // nsIFrame:
#ifdef DEBUG
  NS_IMETHOD Init(nsIContent*      aContent,
                  nsIFrame*        aParent,
                  nsIFrame*        aPrevInFlow);
#endif

  NS_IMETHOD  AttributeChanged(PRInt32         aNameSpaceID,
                               nsIAtom*        aAttribute,
                               PRInt32         aModType);

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

#ifdef DEBUG
  NS_IMETHOD GetFrameName(nsAString& aResult) const
  {
    return MakeFrameName(NS_LITERAL_STRING("SVGTSpan"), aResult);
  }
#endif
  // nsSVGContainerFrame methods:
  virtual gfxMatrix GetCanvasTM();
  
  // nsISVGGlyphFragmentNode interface:
  virtual PRUint32 GetNumberOfChars();
  virtual float GetComputedTextLength();
  virtual float GetSubStringLength(PRUint32 charnum, PRUint32 fragmentChars);
  virtual PRInt32 GetCharNumAtPosition(nsIDOMSVGPoint *point);
  NS_IMETHOD_(nsSVGGlyphFrame *) GetFirstGlyphFrame();
  NS_IMETHOD_(nsSVGGlyphFrame *) GetNextGlyphFrame();
  NS_IMETHOD_(void) SetWhitespaceCompression(bool aCompressWhitespace);
};

#endif