LCOV - code coverage report
Current view: directory - layout/xul/base/src - nsImageBoxFrame.h (source / functions) Found Hit Coverage
Test: app.info Lines: 1 0 0.0 %
Date: 2012-06-02 Functions: 1 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 Communicator client 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) 1998
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      26                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : #ifndef nsImageBoxFrame_h___
      38                 : #define nsImageBoxFrame_h___
      39                 : 
      40                 : #include "nsLeafBoxFrame.h"
      41                 : 
      42                 : #include "imgILoader.h"
      43                 : #include "imgIRequest.h"
      44                 : #include "imgIContainer.h"
      45                 : #include "nsStubImageDecoderObserver.h"
      46                 : 
      47                 : class nsImageBoxFrame;
      48                 : 
      49                 : class nsImageBoxListener : public nsStubImageDecoderObserver
      50                 : {
      51                 : public:
      52                 :   nsImageBoxListener();
      53                 :   virtual ~nsImageBoxListener();
      54                 : 
      55                 :   NS_DECL_ISUPPORTS
      56                 :   // imgIDecoderObserver (override nsStubImageDecoderObserver)
      57                 :   NS_IMETHOD OnStartContainer(imgIRequest *request, imgIContainer *image);
      58                 :   NS_IMETHOD OnStopContainer(imgIRequest *request, imgIContainer *image);
      59                 :   NS_IMETHOD OnStopDecode(imgIRequest *request, nsresult status,
      60                 :                           const PRUnichar *statusArg);
      61                 :   NS_IMETHOD OnImageIsAnimated(imgIRequest* aRequest);
      62                 : 
      63                 :   // imgIContainerObserver (override nsStubImageDecoderObserver)
      64                 :   NS_IMETHOD FrameChanged(imgIRequest *aRequest,
      65                 :                           imgIContainer *aContainer,
      66                 :                           const nsIntRect *aDirtyRect);
      67                 : 
      68               0 :   void SetFrame(nsImageBoxFrame *frame) { mFrame = frame; }
      69                 : 
      70                 : private:
      71                 :   nsImageBoxFrame *mFrame;
      72                 : };
      73                 : 
      74                 : class nsImageBoxFrame : public nsLeafBoxFrame
      75                 : {
      76                 : public:
      77                 :   NS_DECL_FRAMEARENA_HELPERS
      78                 : 
      79                 :   // nsIBox
      80                 :   virtual nsSize GetPrefSize(nsBoxLayoutState& aBoxLayoutState);
      81                 :   virtual nsSize GetMinSize(nsBoxLayoutState& aBoxLayoutState);
      82                 :   virtual nscoord GetBoxAscent(nsBoxLayoutState& aBoxLayoutState);
      83                 :   virtual void MarkIntrinsicWidthsDirty();
      84                 : 
      85                 :   friend nsIFrame* NS_NewImageBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
      86                 : 
      87                 :   // nsIBox frame interface
      88                 : 
      89                 :   NS_IMETHOD  Init(nsIContent*      aContent,
      90                 :                    nsIFrame*        aParent,
      91                 :                    nsIFrame*        asPrevInFlow);
      92                 : 
      93                 :   NS_IMETHOD AttributeChanged(PRInt32 aNameSpaceID,
      94                 :                               nsIAtom* aAttribute,
      95                 :                               PRInt32 aModType);
      96                 : 
      97                 :   virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext);
      98                 : 
      99                 :   virtual void DestroyFrom(nsIFrame* aDestructRoot);
     100                 : 
     101                 :   virtual nsIAtom* GetType() const;
     102                 : #ifdef DEBUG
     103                 :   NS_IMETHOD GetFrameName(nsAString& aResult) const;
     104                 : #endif
     105                 : 
     106                 :   /** 
     107                 :    * Update mUseSrcAttr from appropriate content attributes or from
     108                 :    * style, throw away the current image, and load the appropriate
     109                 :    * image.
     110                 :    * */
     111                 :   void UpdateImage();
     112                 : 
     113                 :   /**
     114                 :    * Update mLoadFlags from content attributes. Does not attempt to reload the
     115                 :    * image using the new load flags.
     116                 :    */
     117                 :   void UpdateLoadFlags();
     118                 : 
     119                 :   NS_IMETHOD BuildDisplayList(nsDisplayListBuilder*   aBuilder,
     120                 :                               const nsRect&           aDirtyRect,
     121                 :                               const nsDisplayListSet& aLists);
     122                 : 
     123                 :   NS_IMETHOD OnStartContainer(imgIRequest *request, imgIContainer *image);
     124                 :   NS_IMETHOD OnStopContainer(imgIRequest *request, imgIContainer *image);
     125                 :   NS_IMETHOD OnStopDecode(imgIRequest *request,
     126                 :                           nsresult status,
     127                 :                           const PRUnichar *statusArg);
     128                 :   NS_IMETHOD OnImageIsAnimated(imgIRequest* aRequest);
     129                 : 
     130                 :   NS_IMETHOD FrameChanged(imgIRequest *aRequest,
     131                 :                           imgIContainer *aContainer,
     132                 :                           const nsIntRect *aDirtyRect);
     133                 : 
     134                 :   virtual ~nsImageBoxFrame();
     135                 : 
     136                 :   void  PaintImage(nsRenderingContext& aRenderingContext,
     137                 :                    const nsRect& aDirtyRect,
     138                 :                    nsPoint aPt, PRUint32 aFlags);
     139                 : 
     140                 : protected:
     141                 :   nsImageBoxFrame(nsIPresShell* aShell, nsStyleContext* aContext);
     142                 : 
     143                 :   virtual void GetImageSize();
     144                 : 
     145                 : private:
     146                 : 
     147                 :   nsRect mSubRect; ///< If set, indicates that only the portion of the image specified by the rect should be used.
     148                 :   nsSize mIntrinsicSize;
     149                 :   nsSize mImageSize;
     150                 : 
     151                 :   // Boolean variable to determine if the current image request has been
     152                 :   // registered with the refresh driver.
     153                 :   bool mRequestRegistered;
     154                 : 
     155                 :   nsCOMPtr<imgIRequest> mImageRequest;
     156                 :   nsCOMPtr<imgIDecoderObserver> mListener;
     157                 : 
     158                 :   PRInt32 mLoadFlags;
     159                 : 
     160                 :   bool mUseSrcAttr; ///< Whether or not the image src comes from an attribute.
     161                 :   bool mSuppressStyleCheck;
     162                 : }; // class nsImageBoxFrame
     163                 : 
     164                 : #endif /* nsImageBoxFrame_h___ */

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