LCOV - app.info - layout/xul/base/src/tree/src/nsTreeImageListener.cpp

LCOV - code coverage report
| Current view: | directory - layout/xul/base/src/tree/src - nsTreeImageListener.cpp (source / functions) |  | Found | Hit | Coverage |
| Test: | app.info | Lines: | 57 | 0 | 0.0 %
| Date: | 2012-04-21 | Functions: | 14 | 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                 : #include "nsTreeImageListener.h"
          41                 : #include "nsITreeBoxObject.h"
          42                 : #include "imgIRequest.h"
          43                 : #include "imgIContainer.h"
          44                 :
          45               0 : NS_IMPL_ISUPPORTS2(nsTreeImageListener, imgIDecoderObserver, imgIContainerObserver)
          46                 :
          47               0 : nsTreeImageListener::nsTreeImageListener(nsTreeBodyFrame* aTreeFrame)
          48                 :   : mTreeFrame(aTreeFrame),
          49                 :     mInvalidationSuppressed(true),
          50               0 :     mInvalidationArea(nsnull)
          51                 : {
          52               0 : }
          53                 :
          54               0 : nsTreeImageListener::~nsTreeImageListener()
          55                 : {
          56               0 :   delete mInvalidationArea;
          57               0 : }
          58                 :
          59                 : NS_IMETHODIMP
          60               0 : nsTreeImageListener::OnImageIsAnimated(imgIRequest *aRequest)
          61                 : {
          62               0 :   if (!mTreeFrame) {
          63               0 :     return NS_OK;
          64                 :   }
          65                 :
          66               0 :   return mTreeFrame->OnImageIsAnimated(aRequest);
          67                 : }
          68                 :
          69               0 : NS_IMETHODIMP nsTreeImageListener::OnStartContainer(imgIRequest *aRequest,
          70                 :                                                     imgIContainer *aImage)
          71                 : {
          72                 :   // Ensure the animation (if any) is started. Note: There is no
          73                 :   // corresponding call to Decrement for this. This Increment will be
          74                 :   // 'cleaned up' by the Request when it is destroyed, but only then.
          75               0 :   aRequest->IncrementAnimationConsumers();
          76               0 :   return NS_OK;
          77                 : }
          78                 :
          79               0 : NS_IMETHODIMP nsTreeImageListener::OnDataAvailable(imgIRequest *aRequest,
          80                 :                                                    bool aCurrentFrame,
          81                 :                                                    const nsIntRect *aRect)
          82                 : {
          83               0 :   Invalidate();
          84               0 :   return NS_OK;
          85                 : }
          86                 :
          87               0 : NS_IMETHODIMP nsTreeImageListener::FrameChanged(imgIRequest *aRequest,
          88                 :                                                 imgIContainer *aContainer,
          89                 :                                                 const nsIntRect *aDirtyRect)
          90                 : {
          91               0 :   Invalidate();
          92               0 :   return NS_OK;
          93                 : }
          94                 :
          95                 :
          96                 : void
          97               0 : nsTreeImageListener::AddCell(PRInt32 aIndex, nsITreeColumn* aCol)
          98                 : {
          99               0 :   if (!mInvalidationArea) {
         100               0 :     mInvalidationArea = new InvalidationArea(aCol);
         101               0 :     mInvalidationArea->AddRow(aIndex);
         102                 :   }
         103                 :   else {
         104                 :     InvalidationArea* currArea;
         105               0 :     for (currArea = mInvalidationArea; currArea; currArea = currArea->GetNext()) {
         106               0 :       if (currArea->GetCol() == aCol) {
         107               0 :         currArea->AddRow(aIndex);
         108               0 :         break;
         109                 :       }
         110                 :     }
         111               0 :     if (!currArea) {
         112               0 :       currArea = new InvalidationArea(aCol);
         113               0 :       currArea->SetNext(mInvalidationArea);
         114               0 :       mInvalidationArea = currArea;
         115               0 :       mInvalidationArea->AddRow(aIndex);
         116                 :     }
         117                 :   }
         118               0 : }
         119                 :
         120                 :
         121                 : void
         122               0 : nsTreeImageListener::Invalidate()
         123                 : {
         124               0 :   if (!mInvalidationSuppressed) {
         125               0 :     for (InvalidationArea* currArea = mInvalidationArea; currArea;
         126                 :          currArea = currArea->GetNext()) {
         127                 :       // Loop from min to max, invalidating each cell that was listening for this image.
         128               0 :       for (PRInt32 i = currArea->GetMin(); i <= currArea->GetMax(); ++i) {
         129               0 :         if (mTreeFrame) {
         130               0 :           nsITreeBoxObject* tree = mTreeFrame->GetTreeBoxObject();
         131               0 :           if (tree) {
         132               0 :             tree->InvalidateCell(i, currArea->GetCol());
         133                 :           }
         134                 :         }
         135                 :       }
         136                 :     }
         137                 :   }
         138               0 : }
         139                 :
         140               0 : nsTreeImageListener::InvalidationArea::InvalidationArea(nsITreeColumn* aCol)
         141                 :   : mCol(aCol),
         142                 :     mMin(-1), // min should start out "undefined"
         143                 :     mMax(0),
         144               0 :     mNext(nsnull)
         145                 : {
         146               0 : }
         147                 :
         148                 : void
         149               0 : nsTreeImageListener::InvalidationArea::AddRow(PRInt32 aIndex)
         150                 : {
         151               0 :   if (mMin == -1)
         152               0 :     mMin = mMax = aIndex;
         153               0 :   else if (aIndex < mMin)
         154               0 :     mMin = aIndex;
         155               0 :   else if (aIndex > mMax)
         156               0 :     mMax = aIndex;
         157               0 : }
         158                 :
         159                 : NS_IMETHODIMP
         160               0 : nsTreeImageListener::ClearFrame()
         161                 : {
         162               0 :   mTreeFrame = nsnull;
         163               0 :   return NS_OK;
         164                 : }

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