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1 /* |
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2 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Utility class for asynchronously decoding the header thumbnail image |
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15 * |
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16 */ |
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17 |
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18 |
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19 #include "cvimpstdetailsimagedecoder.h" |
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20 |
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21 #include "cvimpstdetailsheadercontrol.h" |
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22 |
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23 #include <cbsbitmap.h> |
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24 #include <imageconversion.h> |
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25 |
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26 // --------------------------------------------------------------------------- |
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27 // CVIMPSTDetailsImageDecoder::NewL |
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28 // Two-phase construction |
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29 // --------------------------------------------------------------------------- |
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30 // |
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31 CVIMPSTDetailsImageDecoder* CVIMPSTDetailsImageDecoder::NewL(CVIMPSTDetailsHeaderControl& aHeader, const TDesC8& aBitmapData) |
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32 { |
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33 CVIMPSTDetailsImageDecoder* self = new (ELeave) CVIMPSTDetailsImageDecoder(aHeader); |
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34 CleanupStack::PushL(self); |
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35 self->ConstructL(aBitmapData); |
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36 CleanupStack::Pop(self); |
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37 return self; |
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38 } |
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39 |
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40 // --------------------------------------------------------------------------- |
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41 // CVIMPSTDetailsImageDecoder::CVIMPSTDetailsImageDecoder |
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42 // First phase (C++) constructor |
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43 // --------------------------------------------------------------------------- |
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44 // |
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45 CVIMPSTDetailsImageDecoder::CVIMPSTDetailsImageDecoder(CVIMPSTDetailsHeaderControl& aHeader) : |
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46 CActive( CActive::EPriorityStandard ), iHeader(aHeader) |
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47 { |
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48 CActiveScheduler::Add(this); |
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49 } |
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50 |
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51 // --------------------------------------------------------------------------- |
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52 // CVIMPSTDetailsImageDecoder::ConstructL |
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53 // ConstructL, second phase constructor |
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54 // --------------------------------------------------------------------------- |
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55 // |
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56 void CVIMPSTDetailsImageDecoder::ConstructL(const TDesC8& aBitmapData) |
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57 { |
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58 iBitmapData = aBitmapData.AllocL(); |
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59 User::LeaveIfError( iFs.Connect() ); |
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60 iImgDecoder = CImageDecoder::DataNewL( iFs, *iBitmapData ); |
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61 TFrameInfo info = iImgDecoder->FrameInfo(); |
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62 iBitmap = new ( ELeave ) CFbsBitmap; |
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63 User::LeaveIfError( iBitmap->Create( info.iOverallSizeInPixels, info.iFrameDisplayMode )); |
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64 } |
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65 |
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66 // --------------------------------------------------------------------------- |
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67 // CVIMPSTDetailsImageDecoder::~CVIMPSTDetailsImageDecoder |
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68 // --------------------------------------------------------------------------- |
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69 // |
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70 CVIMPSTDetailsImageDecoder::~CVIMPSTDetailsImageDecoder() |
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71 { |
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72 DoCancel(); |
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73 if (iImgDecoder) |
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74 { |
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75 delete iImgDecoder; |
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76 iImgDecoder = NULL; |
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77 } |
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78 if (iBitmap) |
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79 { |
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80 delete iBitmap; |
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81 iBitmap = NULL; |
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82 } |
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83 if (iBitmapData) |
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84 { |
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85 delete iBitmapData; |
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86 iBitmapData = NULL; |
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87 } |
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88 iFs.Close(); |
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89 } |
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90 |
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91 // --------------------------------------------------------------------------- |
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92 // CVIMPSTDetailsImageDecoder::Start |
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93 // Starts the decoding process |
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94 // --------------------------------------------------------------------------- |
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95 // |
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96 void CVIMPSTDetailsImageDecoder::Start() |
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97 { |
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98 iStatus = KRequestPending; |
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99 iImgDecoder->Convert( &iStatus, *iBitmap ); |
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100 SetActive(); |
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101 } |
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102 |
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103 // --------------------------------------------------------------------------- |
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104 // CVIMPSTDetailsImageDecoder::RunL |
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105 // Called by the active object framework when the decoding (request) is |
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106 // completed. |
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107 // --------------------------------------------------------------------------- |
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108 // |
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109 void CVIMPSTDetailsImageDecoder::RunL() |
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110 { |
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111 User::LeaveIfError( iStatus.Int() ); |
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112 // Ownership of the bitmap is transferred |
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113 iHeader.SetBitmap(iBitmap, NULL ); |
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114 iBitmap = NULL; |
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115 } |
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116 |
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117 // --------------------------------------------------------------------------- |
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118 // CVIMPSTDetailsImageDecoder::DoCancel |
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119 // Called when the decoding (request) is cancelled for some reason. |
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120 // --------------------------------------------------------------------------- |
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121 // |
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122 void CVIMPSTDetailsImageDecoder::DoCancel() |
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123 { |
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124 iImgDecoder->Cancel(); |
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125 } |
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126 |
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127 // end of file |