accessible/src/msaa/nsTextAccessibleWrap.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   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
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  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 mozilla.org code.
  16  *
  17  * The Initial Developer of the Original Code is
  18  * Netscape Corp.
  19  * Portions created by the Initial Developer are Copyright (C) 2003
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *   Aaron Leventhal
  24  *
  25  * Alternatively, the contents of this file may be used under the terms of
  26  * either the GNU General Public License Version 2 or later (the "GPL"), or
  27  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  28  * in which case the provisions of the GPL or the LGPL are applicable instead
  29  * of those above. If you wish to allow use of your version of this file only
  30  * under the terms of either the GPL or the LGPL, and not to allow others to
  31  * use your version of this file under the terms of the MPL, indicate your
  32  * decision by deleting the provisions above and replace them with the notice
  33  * and other provisions required by the GPL or the LGPL. If you do not delete
  34  * the provisions above, a recipient may use your version of this file under
  35  * the terms of any one of the MPL, the GPL or the LGPL.
  36  *
  37  * ***** END LICENSE BLOCK ***** */
  38
  39 #ifndef _nsTextAccessibleWrap_H_
  40 #define _nsTextAccessibleWrap_H_
  41
  42 #include "nsTextAccessible.h"
  43 #include "ISimpleDOMText.h"
  44 #include "nsRect.h"
  45
  46 class nsIFrame;
  47 class nsPresContext;
  48 class nsIRenderingContext;
  49
  50 class nsTextAccessibleWrap : public nsTextAccessible,
  51                              public ISimpleDOMText
  52 {
  53   public:
  54     nsTextAccessibleWrap(nsIDOMNode *, nsIWeakReference* aShell);
  55     virtual ~nsTextAccessibleWrap() {}
  56
  57     // IUnknown methods - see iunknown.h for documentation
  58     STDMETHODIMP_(ULONG) AddRef();
  59     STDMETHODIMP_(ULONG) Release();
  60     STDMETHODIMP QueryInterface(REFIID, void**);
  61
  62     virtual /* [propget] */ HRESULT STDMETHODCALLTYPE get_domText(
  63         /* [retval][out] */ BSTR __RPC_FAR *domText);
  64
  65     virtual HRESULT STDMETHODCALLTYPE get_clippedSubstringBounds(
  66         /* [in] */ unsigned int startIndex,
  67         /* [in] */ unsigned int endIndex,
  68         /* [out] */ int __RPC_FAR *x,
  69         /* [out] */ int __RPC_FAR *y,
  70         /* [out] */ int __RPC_FAR *width,
  71         /* [out] */ int __RPC_FAR *height);
  72
  73     virtual HRESULT STDMETHODCALLTYPE get_unclippedSubstringBounds(
  74         /* [in] */ unsigned int startIndex,
  75         /* [in] */ unsigned int endIndex,
  76         /* [out] */ int __RPC_FAR *x,
  77         /* [out] */ int __RPC_FAR *y,
  78         /* [out] */ int __RPC_FAR *width,
  79         /* [out] */ int __RPC_FAR *height);
  80
  81     virtual HRESULT STDMETHODCALLTYPE scrollToSubstring(
  82         /* [in] */ unsigned int startIndex,
  83         /* [in] */ unsigned int endIndex);
  84
  85     virtual /* [propget] */ HRESULT STDMETHODCALLTYPE get_fontFamily(
  86         /* [retval][out] */ BSTR __RPC_FAR *fontFamily);
  87
  88   protected:
  89     nsresult GetCharacterExtents(PRInt32 aStartOffset, PRInt32 aEndOffset,
  90                                  PRInt32* aX, PRInt32* aY,
  91                                  PRInt32* aWidth, PRInt32* aHeight);
  92
  93     // Return child frame containing offset on success
  94     nsIFrame* GetPointFromOffset(nsIFrame *aContainingFrame,
  95                                  PRInt32 aOffset, PRBool aPreferNext, nsPoint& aOutPoint);
  96 };
  97
  98 #endif
  99