LCOV - code coverage report
Current view: directory - layout/xul/base/src/tree/src - nsTreeImageListener.h (source / functions) Found Hit Coverage
Test: app.info Lines: 7 0 0.0 %
Date: 2012-06-02 Functions: 7 0 0.0 %

       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 Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 2003
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Dave Hyatt <hyatt@mozilla.org> (Original Author)
      24                 :  *   Jan Varga <varga@ku.sk>
      25                 :  *
      26                 :  * Alternatively, the contents of this file may be used under the terms of
      27                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      28                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      29                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      30                 :  * of those above. If you wish to allow use of your version of this file only
      31                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      32                 :  * use your version of this file under the terms of the MPL, indicate your
      33                 :  * decision by deleting the provisions above and replace them with the notice
      34                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      35                 :  * the provisions above, a recipient may use your version of this file under
      36                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      37                 :  *
      38                 :  * ***** END LICENSE BLOCK ***** */
      39                 : 
      40                 : #ifndef nsTreeImageListener_h__
      41                 : #define nsTreeImageListener_h__
      42                 : 
      43                 : #include "nsString.h"
      44                 : #include "nsCOMPtr.h"
      45                 : #include "nsITreeColumns.h"
      46                 : #include "nsStubImageDecoderObserver.h"
      47                 : #include "nsTreeBodyFrame.h"
      48                 : 
      49                 : // This class handles image load observation.
      50                 : class nsTreeImageListener : public nsStubImageDecoderObserver
      51                 : {
      52                 : public:
      53                 :   nsTreeImageListener(nsTreeBodyFrame *aTreeFrame);
      54                 :   ~nsTreeImageListener();
      55                 : 
      56                 :   NS_DECL_ISUPPORTS
      57                 :   // imgIDecoderObserver (override nsStubImageDecoderObserver)
      58                 :   NS_IMETHOD OnStartContainer(imgIRequest *aRequest, imgIContainer *aImage);
      59                 :   NS_IMETHOD OnImageIsAnimated(imgIRequest* aRequest);
      60                 :   NS_IMETHOD OnDataAvailable(imgIRequest *aRequest, bool aCurrentFrame,
      61                 :                              const nsIntRect *aRect);
      62                 :   // imgIContainerObserver (override nsStubImageDecoderObserver)
      63                 :   NS_IMETHOD FrameChanged(imgIRequest *aRequest,
      64                 :                           imgIContainer *aContainer,
      65                 :                           const nsIntRect *aDirtyRect);
      66                 : 
      67                 :   NS_IMETHOD ClearFrame();
      68                 : 
      69                 :   friend class nsTreeBodyFrame;
      70                 : 
      71                 : protected:
      72               0 :   void UnsuppressInvalidation() { mInvalidationSuppressed = false; }
      73                 :   void Invalidate();
      74                 :   void AddCell(PRInt32 aIndex, nsITreeColumn* aCol);
      75                 : 
      76                 : private:
      77                 :   nsTreeBodyFrame* mTreeFrame;
      78                 : 
      79                 :   // A guard that prevents us from recursive painting.
      80                 :   bool mInvalidationSuppressed;
      81                 : 
      82                 :   class InvalidationArea {
      83                 :     public:
      84                 :       InvalidationArea(nsITreeColumn* aCol);
      85               0 :       ~InvalidationArea() { delete mNext; }
      86                 : 
      87                 :       friend class nsTreeImageListener;
      88                 : 
      89                 :     protected:
      90                 :       void AddRow(PRInt32 aIndex);
      91               0 :       nsITreeColumn* GetCol() { return mCol.get(); }
      92               0 :       PRInt32 GetMin() { return mMin; }
      93               0 :       PRInt32 GetMax() { return mMax; }
      94               0 :       InvalidationArea* GetNext() { return mNext; }
      95               0 :       void SetNext(InvalidationArea* aNext) { mNext = aNext; }
      96                 : 
      97                 :     private:
      98                 :       nsCOMPtr<nsITreeColumn> mCol;
      99                 :       PRInt32                 mMin;
     100                 :       PRInt32                 mMax;
     101                 :       InvalidationArea*       mNext;
     102                 :   };
     103                 : 
     104                 :   InvalidationArea* mInvalidationArea;
     105                 : };
     106                 : 
     107                 : #endif // nsTreeImageListener_h__

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