layout/svg/base/src/nsSVGTSpanFrame.h

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   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
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  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is the Mozilla SVG project.
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Crocodile Clips Ltd..
  19  * Portions created by the Initial Developer are Copyright (C) 2002
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *   Alex Fritze <alex.fritze@crocodile-clips.com> (original author)
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  25  * Alternatively, the contents of this file may be used under the terms of
  26  * either of the GNU General Public License Version 2 or later (the "GPL"),
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  37  * ***** END LICENSE BLOCK ***** */
  38
  39 #ifndef NSSVGTSPANFRAME_H
  40 #define NSSVGTSPANFRAME_H
  41
  42 #include "nsSVGTextContainerFrame.h"
  43 #include "nsISVGGlyphFragmentNode.h"
  44
  45 typedef nsSVGTextContainerFrame nsSVGTSpanFrameBase;
  46
  47 class nsSVGTSpanFrame : public nsSVGTSpanFrameBase,
  48                         public nsISVGGlyphFragmentNode
  49 {
  50   friend nsIFrame*
  51   NS_NewSVGTSpanFrame(nsIPresShell* aPresShell, nsIContent* aContent,
  52                       nsIFrame* parentFrame, nsStyleContext* aContext);
  53 protected:
  54   nsSVGTSpanFrame(nsStyleContext* aContext) :
  55     nsSVGTextContainerFrame(aContext) {}
  56
  57    // nsISupports interface:
  58   NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
  59 private:
  60   NS_IMETHOD_(nsrefcnt) AddRef() { return 1; }
  61   NS_IMETHOD_(nsrefcnt) Release() { return 1; }
  62
  63 public:
  64   // nsIFrame:
  65   NS_IMETHOD  AttributeChanged(PRInt32         aNameSpaceID,
  66                                nsIAtom*        aAttribute,
  67                                PRInt32         aModType);
  68
  69   /**
  70    * Get the "type" of the frame
  71    *
  72    * @see nsGkAtoms::svgTSpanFrame
  73    */
  74   virtual nsIAtom* GetType() const;
  75
  76 #ifdef DEBUG
  77   NS_IMETHOD GetFrameName(nsAString& aResult) const
  78   {
  79     return MakeFrameName(NS_LITERAL_STRING("SVGTSpan"), aResult);
  80   }
  81 #endif
  82   // nsSVGContainerFrame methods:
  83   virtual already_AddRefed<nsIDOMSVGMatrix> GetCanvasTM();
  84
  85   // nsISVGGlyphFragmentNode interface:
  86   NS_IMETHOD_(PRUint32) GetNumberOfChars();
  87   NS_IMETHOD_(float) GetComputedTextLength();
  88   NS_IMETHOD_(float) GetSubStringLength(PRUint32 charnum, PRUint32 fragmentChars);
  89   NS_IMETHOD_(PRInt32) GetCharNumAtPosition(nsIDOMSVGPoint *point);
  90   NS_IMETHOD_(nsISVGGlyphFragmentLeaf *) GetFirstGlyphFragment();
  91   NS_IMETHOD_(nsISVGGlyphFragmentLeaf *) GetNextGlyphFragment();
  92   NS_IMETHOD_(void) SetWhitespaceHandling(PRUint8 aWhitespaceHandling);
  93 };
  94
  95 #endif