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1 /* |
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2 * Copyright (c) 2007-2008 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: Class used to for resizing burst mode thumbnails* |
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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 FILES |
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20 #include <e32base.h> |
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21 #include <e32std.h> |
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22 |
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23 #include "CamBurstThumbnailGridSizer.h" |
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24 #include "camlogging.h" |
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25 |
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26 |
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27 |
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28 |
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29 |
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30 // EXTERNAL DATA STRUCTURES |
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31 |
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32 // EXTERNAL FUNCTION PROTOTYPES |
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33 |
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34 // CONSTANTS |
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35 |
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36 // MACROS |
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37 |
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38 // LOCAL CONSTANTS AND MACROS |
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39 |
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40 // MODULE DATA STRUCTURES |
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41 |
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42 // LOCAL FUNCTION PROTOTYPES |
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43 |
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44 // FORWARD DECLARATIONS |
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45 |
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46 // ============================= LOCAL FUNCTIONS =============================== |
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47 |
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48 |
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49 // ============================ MEMBER FUNCTIONS =============================== |
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50 |
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51 // ----------------------------------------------------------------------------- |
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52 // Symbian 2 phase constructor <<static>> |
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53 // ----------------------------------------------------------------------------- |
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54 // |
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55 CScaleTask* |
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56 CScaleTask::NewL( const CFbsBitmap& aBitmap, |
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57 const TSize& aSize, |
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58 TInt32 aInfo ) |
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59 { |
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60 CScaleTask* self = new (ELeave) CScaleTask( aSize, aInfo ); |
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61 CleanupStack::PushL( self ); |
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62 self->ConstructL( aBitmap ); |
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63 CleanupStack::Pop( self ); |
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64 return self; |
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65 } |
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66 |
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67 // ----------------------------------------------------------------------------- |
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68 // CScaleTask destructor <<virtual>> |
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69 // ----------------------------------------------------------------------------- |
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70 // |
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71 CScaleTask::~CScaleTask() |
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72 { |
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73 delete iSrc; |
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74 iSrc = NULL; |
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75 } |
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76 |
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77 // ----------------------------------------------------------------------------- |
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78 // CScaleTask constructor <<virtual>> |
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79 // ----------------------------------------------------------------------------- |
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80 // |
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81 CScaleTask::CScaleTask( const TSize& aSize, |
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82 TInt32 aInfo ) |
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83 : iSize ( aSize ), |
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84 iInfo ( aInfo ) |
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85 { |
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86 } |
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87 |
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88 // ----------------------------------------------------------------------------- |
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89 // CScaleTask::ConstructL |
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90 // ----------------------------------------------------------------------------- |
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91 // |
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92 void |
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93 CScaleTask::ConstructL( const CFbsBitmap& aBitmap ) |
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94 { |
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95 iSrc = new (ELeave) CFbsBitmap; |
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96 User::LeaveIfError( iSrc->Duplicate( aBitmap.Handle() ) ); |
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97 } |
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98 |
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99 |
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100 |
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101 // ----------------------------------------------------------------------------- |
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102 // CCamThumbnailGridSizer::CCamThumbnailGridSizer |
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103 // C++ default constructor can NOT contain any code, that |
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104 // might leave. |
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105 // ----------------------------------------------------------------------------- |
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106 // |
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107 CCamThumbnailGridSizer::CCamThumbnailGridSizer( MBitmapScaler* aObserver, TSize& aSize ) |
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108 : CActive( EPriorityStandard ), |
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109 iThumbSize( aSize ) |
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110 { |
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111 iObserver = aObserver; |
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112 CActiveScheduler::Add(this); |
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113 } |
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114 |
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115 // ----------------------------------------------------------------------------- |
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116 // CCamThumbnailGridSizer::ConstructL |
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117 // Symbian 2nd phase constructor can leave. |
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118 // ----------------------------------------------------------------------------- |
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119 // |
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120 void CCamThumbnailGridSizer::ConstructL() |
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121 { |
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122 iScaler = CBitmapScaler::NewL(); |
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123 } |
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124 |
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125 // ----------------------------------------------------------------------------- |
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126 // CCamThumbnailGridSizer::NewL |
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127 // Two-phased constructor. |
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128 // ----------------------------------------------------------------------------- |
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129 // |
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130 CCamThumbnailGridSizer* CCamThumbnailGridSizer::NewL( MBitmapScaler* aObserver, TSize& aSize ) |
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131 { |
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132 CCamThumbnailGridSizer* self = new( ELeave ) CCamThumbnailGridSizer( aObserver, aSize ); |
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133 |
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134 CleanupStack::PushL( self ); |
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135 self->ConstructL(); |
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136 CleanupStack::Pop(); |
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137 |
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138 return self; |
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139 } |
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140 |
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141 |
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142 // ----------------------------------------------------------------------------- |
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143 // Destructor |
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144 // ----------------------------------------------------------------------------- |
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145 // |
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146 CCamThumbnailGridSizer::~CCamThumbnailGridSizer() |
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147 { |
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148 PRINT( _L("Camera => ~CCamThumbnailGridSizer") ); |
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149 Cancel(); |
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150 delete iScaler; |
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151 |
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152 // Delete any intermediate temporary bitmap |
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153 delete iTmpBitmap; |
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154 |
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155 // Cancel all pending scaling operations |
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156 iScaleTaskArray.ResetAndDestroy(); |
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157 PRINT( _L("Camera <= ~CCamThumbnailGridSizer") ); |
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158 } |
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159 |
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160 // ----------------------------------------------------------------------------- |
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161 // CCamThumbnailGridSizer::SetSize |
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162 // ----------------------------------------------------------------------------- |
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163 // |
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164 void CCamThumbnailGridSizer::SetSize( const TSize aThumbSize ) |
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165 { |
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166 PRINT2( _L("Camera == CCamThumbnailGridSizer::SetSize width = %d, height = %d"), aThumbSize.iWidth, aThumbSize.iHeight ); |
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167 iThumbSize.iWidth = aThumbSize.iWidth; |
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168 iThumbSize.iHeight = aThumbSize.iHeight; |
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169 } |
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170 |
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171 // ----------------------------------------------------------------------------- |
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172 // CCamThumbnailGridSizer::StartScaleL |
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173 // ----------------------------------------------------------------------------- |
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174 // |
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175 void CCamThumbnailGridSizer::StartScaleL( const CFbsBitmap& aSrc ) |
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176 { |
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177 PRINT( _L("Camera == CCamThumbnailGridSizer::StartScaleL") ); |
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178 // Forward request on with default destination size |
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179 StartScaleL( aSrc, iThumbSize, 0 ); |
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180 } |
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181 |
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182 |
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183 // ----------------------------------------------------------------------------- |
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184 // CCamThumbnailGridSizer::StartScaleL |
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185 // Allows specifying of specific size to go to where required. |
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186 // ----------------------------------------------------------------------------- |
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187 // |
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188 void CCamThumbnailGridSizer::StartScaleL( const CFbsBitmap& aSrc, TSize& aSize, TInt32 aInfo ) |
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189 { |
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190 PRINT3(_L("Camera => CCamThumbnailGridSizer::StartScaleL size %d x %d info 0x%x"), aSize.iWidth, aSize.iHeight, aInfo ); |
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191 |
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192 // Add it to the queue of things to scale |
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193 CScaleTask* task = CScaleTask::NewL( aSrc, aSize, aInfo ); |
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194 CleanupStack::PushL( task ); |
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195 User::LeaveIfError( iScaleTaskArray.Append( task ) ); // takes ownership of "task" |
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196 CleanupStack::Pop( task ); |
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197 |
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198 StartScaleL( task ); |
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199 PRINT ( _L("Camera <= CCamThumbnailGridSizer::StartScaleL") ); |
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200 } |
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201 |
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202 // ----------------------------------------------------------------------------- |
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203 // CCamThumbnailGridSizer::StartScaleL |
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204 // Allows specifying of specific sizing task to start |
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205 // ----------------------------------------------------------------------------- |
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206 // |
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207 void CCamThumbnailGridSizer::StartScaleL( CScaleTask* aTask ) |
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208 { |
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209 PRINT( _L("Camera => CCamThumbnailGridSizer::StartScaleL task") ); |
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210 // If scaling not currently underway, start it. |
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211 // If scaler is busy, it will be started when current operation completes. |
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212 if ( !IsActive() ) |
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213 { |
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214 // Check that we don't have any temporary images floating around |
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215 if ( iTmpBitmap ) |
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216 { |
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217 delete iTmpBitmap; |
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218 iTmpBitmap = NULL; |
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219 } |
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220 |
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221 TSize trgSize( aTask->Size() ); |
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222 const TSize& bmpSize( aTask->Bitmap()->SizeInPixels() ); |
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223 TRect srcRect( bmpSize ); |
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224 |
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225 TReal bmpRatio( TReal( bmpSize.iWidth ) / TReal( bmpSize.iHeight ) ); |
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226 TReal trgRatio( TReal( trgSize.iWidth ) / TReal( trgSize.iHeight ) ); |
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227 |
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228 PRINT2( _L("Camera <> CCamThumbnailGridSizer - source size(%d,%d)"), |
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229 bmpSize.iWidth, bmpSize.iHeight ); |
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230 |
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231 PRINT2( _L("Camera <> CCamThumbnailGridSizer - target size(%d,%d)"), |
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232 trgSize.iWidth, trgSize.iHeight ); |
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233 |
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234 if( bmpRatio > trgRatio ) |
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235 { |
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236 // Thumbnail aspect ratio is wider than the target size. |
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237 // Scale initially to a size wider than target and then crop. |
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238 trgSize.iWidth = Max( trgSize.iHeight * bmpRatio, 1 ); |
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239 } |
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240 if( bmpRatio < trgRatio ) |
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241 { |
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242 // Thumbnail aspect ratio is wider than the target size. |
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243 // Scale initially to a size higher than target and then crop. |
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244 trgSize.iHeight = Max( trgSize.iWidth * bmpRatio, 1 ); |
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245 } |
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246 |
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247 PRINT2( _L("Camera <> CCamThumbnailGridSizer - intermediate size(%d,%d)"), |
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248 trgSize.iWidth, trgSize.iHeight ); |
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249 |
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250 |
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251 // Create a temporary bitmap |
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252 iTmpBitmap = new ( ELeave ) CFbsBitmap(); |
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253 iTmpBitmap->Create( trgSize, aTask->Bitmap()->DisplayMode() ); |
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254 |
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255 |
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256 // Start the scaling operation |
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257 iScaler->Scale( &iStatus, |
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258 const_cast<CFbsBitmap&>(*aTask->Bitmap()), |
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259 *iTmpBitmap, |
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260 ETrue ); |
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261 SetActive(); |
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262 } |
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263 PRINT( _L("Camera <= CCamThumbnailGridSizer::StartScaleL task") ); |
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264 } |
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265 |
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266 // ----------------------------------------------------------------------------- |
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267 // CCamThumbnailGridSizer::DoCancel |
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268 // ----------------------------------------------------------------------------- |
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269 // |
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270 void CCamThumbnailGridSizer::DoCancel() |
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271 { |
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272 PRINT( _L("Camera => CCamThumbnailGridSizer::DoCancel") ); |
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273 iScaler->Cancel(); |
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274 |
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275 // Delete any intermediate temporary bitmap |
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276 if ( iTmpBitmap ) |
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277 { |
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278 delete iTmpBitmap; |
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279 iTmpBitmap = NULL; |
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280 } |
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281 |
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282 // Cancel all pending scaling operations |
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283 iScaleTaskArray.ResetAndDestroy(); |
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284 PRINT( _L("Camera <= CCamThumbnailGridSizer::DoCancel") ); |
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285 } |
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286 |
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287 // ----------------------------------------------------------------------------- |
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288 // CCamThumbnailGridSizer::RunL |
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289 // ----------------------------------------------------------------------------- |
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290 // |
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291 void CCamThumbnailGridSizer::RunL() |
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292 { |
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293 PRINT2( _L("Camera => CCamThumbnailGridSizer::RunL .. observer 0x%x err %d"), iObserver, iStatus.Int() ); |
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294 // If there is an observer, notify them of the scaling completion |
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295 if ( iObserver ) |
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296 { |
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297 PRINT1( _L("Camera <> CCamThumbnailGridSizer::RunL .. scale array count %d"), iScaleTaskArray.Count() ); |
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298 // Note; passing iTmpBitmap in this call is passing ownership of the |
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299 // bitmap to the observer. This also places the restriction that there |
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300 // can only be one observer to an implementation of the GridSizer, which |
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301 // is fine for our requirements |
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302 iObserver->BitmapScaleCompleteL( iStatus.Int(), iTmpBitmap, iScaleTaskArray[0]->Info() ); |
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303 iTmpBitmap = NULL; |
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304 } |
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305 |
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306 CScaleTask* task = NULL; |
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307 if ( iScaleTaskArray.Count() > 0 ) |
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308 { |
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309 // Remove from the array and delete this (completed) task |
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310 task = iScaleTaskArray[0]; |
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311 iScaleTaskArray.Remove(0); |
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312 delete task; |
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313 task = NULL; |
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314 } |
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315 |
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316 // If completed successfully... |
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317 // ... and there are more tasks on the queue... |
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318 // ... and the task is valid, then do next task |
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319 if ( iStatus.Int() == KErrNone && |
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320 iScaleTaskArray.Count() > 0 ) |
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321 { |
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322 task = iScaleTaskArray[0]; |
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323 if ( task ) |
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324 { |
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325 StartScaleL( task ); |
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326 } |
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327 } |
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328 PRINT ( _L("Camera <= CCamThumbnailGridSizer::RunL") ); |
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329 } |
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330 |
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331 |
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332 // End of File |