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1 /* |
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2 * Copyright (c) 2009 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 : |
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15 * |
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16 */ |
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17 #include "activitygraphicfilescaling.h" |
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18 #include <imageconversion.h> |
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19 |
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20 |
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21 // ----------------------------------------------------------------------------- |
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22 // ----------------------------------------------------------------------------- |
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23 // |
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24 CGraphicsSalingHandler::CGraphicsSalingHandler(MImageReadyCallBack &aNotify, |
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25 const TSize &aNewSize, |
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26 TKindOfScaling aKindOfScaling): |
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27 CActive(EPriorityNormal), |
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28 mNotify(aNotify), |
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29 mNewSize(aNewSize), |
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30 mKindOfScaling(aKindOfScaling), |
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31 mCurrentOperation(ENone) |
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32 { |
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33 } |
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34 |
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35 // ----------------------------------------------------------------------------- |
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36 // ----------------------------------------------------------------------------- |
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37 // |
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38 CGraphicsSalingHandler::~CGraphicsSalingHandler() |
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39 { |
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40 Cancel(); |
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41 delete mBitmapFromFile; |
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42 delete mBitmapOutput; |
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43 delete mImageDecoder; |
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44 delete mBitmapScaler; |
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45 } |
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46 |
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47 // ----------------------------------------------------------------------------- |
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48 // ----------------------------------------------------------------------------- |
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49 // |
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50 CGraphicsSalingHandler* CGraphicsSalingHandler::NewL(MImageReadyCallBack &aNotify, |
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51 RFs &aFs, |
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52 const TDesC &aFileName, |
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53 const TDesC8& aMimeType, |
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54 const TSize &aNewSize, |
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55 TKindOfScaling aKindOfScaling) |
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56 { |
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57 CGraphicsSalingHandler *self = CGraphicsSalingHandler::NewLC(aNotify, |
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58 aFs, |
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59 aFileName, |
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60 aMimeType, |
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61 aNewSize, |
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62 aKindOfScaling); |
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63 CleanupStack::Pop(); |
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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 // ----------------------------------------------------------------------------- |
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69 // |
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70 CGraphicsSalingHandler* CGraphicsSalingHandler::NewLC(MImageReadyCallBack &aNotify, |
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71 RFs &aFs, |
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72 const TDesC &aFileName, |
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73 const TDesC8& aMimeType, |
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74 const TSize &aNewSize, |
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75 TKindOfScaling aKindOfScaling) |
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76 { |
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77 CGraphicsSalingHandler *self = new (ELeave) CGraphicsSalingHandler(aNotify, |
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78 aNewSize, |
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79 aKindOfScaling); |
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80 CleanupStack::PushL(self); |
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81 self->ConstructL(aFs, aFileName, aMimeType); |
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82 return self; |
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83 } |
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84 |
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85 // ----------------------------------------------------------------------------- |
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86 // ----------------------------------------------------------------------------- |
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87 // |
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88 void CGraphicsSalingHandler::ConstructL(RFs &aFs, const TDesC &aFileName, const TDesC8& aMimeType) |
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89 { |
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90 CActiveScheduler::Add(this); |
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91 |
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92 if (aFileName.Length() == 0 |
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93 || aFs.IsValidName(aFileName) == EFalse) { |
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94 User::Leave(KErrPathNotFound); |
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95 } |
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96 |
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97 mBitmapScaler = CBitmapScaler::NewL(); |
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98 mBitmapScaler->SetQualityAlgorithm(CBitmapScaler::EMaximumQuality); |
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99 |
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100 // convert *.png to bitmap |
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101 mImageDecoder = CImageDecoder::FileNewL(aFs, aFileName, aMimeType); |
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102 mBitmapFromFile = new(ELeave)CFbsBitmap(); |
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103 const TFrameInfo frameInfo(mImageDecoder->FrameInfo(0)); |
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104 User::LeaveIfError(mBitmapFromFile->Create(frameInfo.iOverallSizeInPixels, |
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105 frameInfo.iFrameDisplayMode)); |
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106 |
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107 mImageDecoder->Convert(&iStatus, *mBitmapFromFile, 0); |
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108 mCurrentOperation = EConvertBitmapFromFile; |
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109 SetActive(); |
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110 } |
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111 |
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112 // ----------------------------------------------------------------------------- |
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113 // ----------------------------------------------------------------------------- |
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114 // |
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115 void CGraphicsSalingHandler::DoCancel() |
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116 { |
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117 switch (mCurrentOperation) { |
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118 case EConvertBitmapFromFile: |
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119 mImageDecoder->Cancel(); |
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120 break; |
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121 case EScale: |
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122 mBitmapScaler->Cancel(); |
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123 break; |
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124 } |
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125 mNotify.ImageReadyCallBack(KErrCancel, 0); |
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126 } |
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127 |
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128 // ----------------------------------------------------------------------------- |
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129 // ----------------------------------------------------------------------------- |
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130 // |
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131 void CGraphicsSalingHandler::RunL() |
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132 { |
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133 if(iStatus.Int()){ |
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134 mNotify.ImageReadyCallBack(iStatus.Int(), 0); |
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135 return; |
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136 } |
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137 |
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138 switch (mCurrentOperation) { |
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139 case EConvertBitmapFromFile: { |
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140 delete mImageDecoder; |
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141 mImageDecoder = 0; |
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142 |
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143 mBitmapOutput = new (ELeave)CFbsBitmap(); |
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144 User::LeaveIfError(mBitmapOutput->Create(Scaling(), mBitmapFromFile->DisplayMode())); |
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145 mBitmapScaler->Scale(&iStatus, *mBitmapFromFile, *mBitmapOutput, EFalse); |
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146 mCurrentOperation = EScale; |
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147 SetActive(); |
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148 break; |
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149 } |
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150 case EScale: { |
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151 mCurrentOperation = ENone; |
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152 |
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153 delete mBitmapScaler; |
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154 mBitmapScaler = 0; |
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155 |
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156 delete mBitmapFromFile; |
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157 mBitmapFromFile = 0; |
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158 |
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159 mNotify.ImageReadyCallBack(iStatus.Int(), mBitmapOutput); |
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160 break; |
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161 } |
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162 } |
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163 } |
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164 |
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165 // ----------------------------------------------------------------------------- |
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166 // ----------------------------------------------------------------------------- |
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167 // |
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168 TSize CGraphicsSalingHandler::Scaling() |
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169 { |
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170 TSize originalSize = mBitmapFromFile->SizeInPixels(); |
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171 float widthFactor = mNewSize.iWidth / (float)originalSize.iWidth; |
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172 float heightFactor = mNewSize.iHeight / (float)originalSize.iHeight; |
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173 TSize retSize(mNewSize); |
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174 if (mKindOfScaling == CGraphicsSalingHandler::EKeepAspectRatio) { |
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175 retSize = (widthFactor < heightFactor) ? |
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176 TSize(mNewSize.iWidth, widthFactor * originalSize.iHeight) : |
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177 TSize(heightFactor * originalSize.iWidth, mNewSize.iHeight); |
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178 } else if (mKindOfScaling == CGraphicsSalingHandler::EKeepAspectRatioByExpanding) { |
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179 retSize = (widthFactor < heightFactor) ? |
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180 TSize(heightFactor * originalSize.iWidth, mNewSize.iHeight) : |
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181 TSize(mNewSize.iWidth, widthFactor * originalSize.iHeight); |
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182 } |
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183 return retSize; |
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184 } |
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185 // ----------------------------------------------------------------------------- |
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186 // ----------------------------------------------------------------------------- |
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187 // |
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188 TInt CGraphicsSalingHandler::RunError(TInt aError) |
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189 { |
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190 mNotify.ImageReadyCallBack(aError, 0); |
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191 return KErrNone; |
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192 } |