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 <bitmaptransforms.h> |
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18 #include <imageconversion.h> |
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19 |
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20 #include "tsgraphicfilescalinghandler.h" |
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21 // ----------------------------------------------------------------------------- |
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22 /** |
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23 * Private constructor. |
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24 * Parameters - the same meaning as in appropriate NewL/NewLC functions. |
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25 */ |
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26 CTsGraphicFileScalingHandler::CTsGraphicFileScalingHandler( |
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27 MImageReadyCallBack &aNotify, |
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28 const TSize &aNewSize, |
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29 TKindOfScaling aKindOfScaling, |
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30 TInt aRotation ) |
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31 : |
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32 CActive( EPriorityNormal ), |
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33 iNotify( aNotify ), |
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34 iNewSize( aNewSize ), |
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35 iKindOfScaling( aKindOfScaling ), |
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36 iRotation( aRotation ), |
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37 iCurrentOperation( ENone ) |
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38 { |
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39 CActiveScheduler::Add(this); |
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40 } |
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41 |
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42 // ----------------------------------------------------------------------------- |
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43 /** |
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44 * Destructor. |
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45 */ |
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46 CTsGraphicFileScalingHandler::~CTsGraphicFileScalingHandler() |
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47 { |
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48 Cancel(); |
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49 delete iInputBitmap; |
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50 delete iOutputBitmap; |
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51 delete iImageDecoder; |
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52 delete iBitmapScaler; |
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53 delete iBitmapRotator; |
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54 } |
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55 |
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56 // ----------------------------------------------------------------------------- |
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57 /** |
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58 * Constructors for activation graphic file scaling. |
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59 * aNotify - reference to observer implementation. |
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60 * aFs - reference to file server session. |
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61 * aFileName - path to graphic file. |
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62 * aMimeType - mime type of graphic file. |
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63 * aNewSize - new size of output graphic file. |
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64 * aKindOfScaling - kind of graphic file scaling described above. |
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65 * aRotation - requested rotation angle |
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66 */ |
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67 CTsGraphicFileScalingHandler* CTsGraphicFileScalingHandler::NewL( |
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68 MImageReadyCallBack &aNotify, |
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69 RFs &aFs, |
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70 const TDesC &aFileName, |
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71 const TDesC8& aMimeType, |
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72 const TSize &aNewSize, |
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73 TKindOfScaling aKindOfScaling, |
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74 TInt aRotation |
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75 ) |
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76 { |
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77 CTsGraphicFileScalingHandler *self = |
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78 CTsGraphicFileScalingHandler::NewLC(aNotify, |
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79 aFs, |
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80 aFileName, |
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81 aMimeType, |
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82 aNewSize, |
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83 aKindOfScaling, |
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84 aRotation ); |
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85 CleanupStack::Pop( self ); |
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86 return self; |
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87 } |
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88 |
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89 // ----------------------------------------------------------------------------- |
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90 /** |
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91 * Constructors for activation graphic file scaling. |
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92 * aNotify - reference to observer implementation. |
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93 * aFs - reference to file server session. |
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94 * aFileName - path to graphic file. |
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95 * aMimeType - mime type of graphic file. |
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96 * aNewSize - new size of output graphic file. |
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97 * aKindOfScaling - kind of graphic file scaling described above. |
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98 * aRotation - requested rotation angle |
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99 */ |
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100 CTsGraphicFileScalingHandler* CTsGraphicFileScalingHandler::NewLC( |
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101 MImageReadyCallBack &aNotify, |
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102 RFs &aFs, |
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103 const TDesC &aFileName, |
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104 const TDesC8& aMimeType, |
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105 const TSize &aNewSize, |
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106 TKindOfScaling aKindOfScaling, |
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107 TInt aRotation ) |
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108 { |
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109 CTsGraphicFileScalingHandler *self = |
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110 new (ELeave) CTsGraphicFileScalingHandler( aNotify, |
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111 aNewSize, |
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112 aKindOfScaling, |
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113 aRotation ); |
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114 |
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115 CleanupStack::PushL( self ); |
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116 self->ConstructL( aFs, aFileName, aMimeType ); |
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117 return self; |
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118 } |
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119 |
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120 // ----------------------------------------------------------------------------- |
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121 /** |
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122 * Functions construct active objest instance and made asynchronous operation/s. |
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123 * Parameters - the same meaning as in appropriate NewL/NewLC functions. |
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124 */ |
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125 void CTsGraphicFileScalingHandler::ConstructL( RFs &aFs, |
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126 const TDesC &aFileName, |
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127 const TDesC8& aMimeType ) |
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128 { |
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129 if( 0 == aFileName.Length() |
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130 || EFalse == aFs.IsValidName( aFileName ) ) |
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131 { |
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132 User::Leave( KErrPathNotFound ); |
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133 } |
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134 |
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135 if( 0 == aMimeType.Length() ) |
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136 { |
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137 User::Leave( KErrBadName ); |
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138 } |
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139 |
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140 if( 0 >= iNewSize.iWidth || 0 >= iNewSize.iHeight ) |
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141 { |
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142 User::Leave(KErrCorrupt); |
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143 } |
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144 iInputBitmap = new(ELeave)CFbsBitmap(); |
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145 DecodingOperationL( aFs, aFileName, aMimeType ); |
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146 SetActive(); |
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147 } |
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148 |
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149 // ----------------------------------------------------------------------------- |
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150 /** |
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151 * Exported from dll constructors for activation graphic file scaling. |
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152 * aNotify - reference to observer implementation. |
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153 * aInputFbsBitmap - reference to pattern CFbsBitmap. |
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154 * aNewSize - new size of output graphic file. |
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155 * aKindOfScaling - kind of graphic file scaling described above. |
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156 * aRotation - requested rotation angle |
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157 */ |
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158 CTsGraphicFileScalingHandler* CTsGraphicFileScalingHandler::NewL( |
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159 MImageReadyCallBack &aNotify, |
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160 const CFbsBitmap &aInputFbsBitmap, |
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161 const TSize &aNewSize, |
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162 TKindOfScaling aKindOfScaling, |
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163 TInt aRotation) |
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164 |
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165 { |
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166 CTsGraphicFileScalingHandler *self = |
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167 CTsGraphicFileScalingHandler::NewLC( aNotify, |
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168 aInputFbsBitmap, |
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169 aNewSize, |
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170 aKindOfScaling, |
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171 aRotation ); |
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172 CleanupStack::Pop( self ); |
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173 return self; |
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174 } |
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175 |
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176 // ----------------------------------------------------------------------------- |
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177 /** |
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178 * Exported from dll constructors for activation graphic file scaling. |
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179 * aNotify - reference to observer implementation. |
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180 * aInputFbsBitmap - reference to pattern CFbsBitmap. |
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181 * aNewSize - new size of output graphic file. |
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182 * aKindOfScaling - kind of graphic file scaling described above. |
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183 * aRotation - requested rotation angle |
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184 */ |
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185 CTsGraphicFileScalingHandler* CTsGraphicFileScalingHandler::NewLC( |
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186 MImageReadyCallBack &aNotify, |
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187 const CFbsBitmap &aInputFbsBitmap, |
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188 const TSize &aNewSize, |
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189 TKindOfScaling aKindOfScaling, |
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190 TInt aRotation) |
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191 { |
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192 CTsGraphicFileScalingHandler *self = |
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193 new (ELeave) CTsGraphicFileScalingHandler( |
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194 aNotify, |
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195 aNewSize, |
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196 aKindOfScaling, |
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197 aRotation ); |
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198 CleanupStack::PushL( self ); |
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199 self->ConstructL( aInputFbsBitmap ); |
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200 return self; |
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201 } |
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202 |
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203 // ----------------------------------------------------------------------------- |
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204 /** |
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205 * Functions construct active objest instance and made asynchronous operation/s. |
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206 * Parameters - the same meaning as in appropriate NewL/NewLC functions. |
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207 */ |
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208 void CTsGraphicFileScalingHandler::ConstructL( const CFbsBitmap &aInputFbsBitmap ) |
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209 { |
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210 if( 0 >= iNewSize.iWidth || 0 >= iNewSize.iHeight) |
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211 { |
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212 User::Leave( KErrCorrupt ); |
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213 } |
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214 |
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215 iInputBitmap = new(ELeave)CFbsBitmap(); |
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216 User::LeaveIfError( iInputBitmap->Duplicate( aInputFbsBitmap.Handle() ) ); |
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217 |
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218 IsSupportedRotationMode() ? RotationOperationL() : ScalingOperationL(); |
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219 SetActive(); |
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220 } |
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221 |
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222 // ----------------------------------------------------------------------------- |
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223 /** |
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224 * Cancels the wait for completion of an outstanding request. |
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225 */ |
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226 void CTsGraphicFileScalingHandler::DoCancel() |
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227 { |
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228 switch(iCurrentOperation) |
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229 { |
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230 case EConvertBitmapFromFile: |
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231 iImageDecoder->Cancel(); |
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232 break; |
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233 case EScale: |
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234 iBitmapScaler->Cancel(); |
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235 break; |
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236 } |
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237 iNotify.ImageReadyCallBack( KErrCancel, 0 ); |
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238 } |
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239 |
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240 // ----------------------------------------------------------------------------- |
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241 /** |
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242 * Handles an active object’s request completion event. |
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243 */ |
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244 void CTsGraphicFileScalingHandler::RunL() |
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245 { |
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246 User::LeaveIfError(iStatus.Int()); |
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247 |
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248 switch (iCurrentOperation) |
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249 { |
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250 case EConvertBitmapFromFile: |
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251 delete iImageDecoder; |
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252 iImageDecoder = 0; |
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253 |
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254 IsSupportedRotationMode() ? RotationOperationL() : ScalingOperationL(); |
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255 SetActive(); |
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256 break; |
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257 |
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258 case ERotate: |
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259 delete iBitmapRotator; |
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260 iBitmapRotator = 0; |
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261 |
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262 ScalingOperationL(); |
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263 SetActive(); |
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264 break; |
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265 |
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266 case EScale: |
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267 iCurrentOperation = ENone; |
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268 delete iBitmapScaler; |
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269 iBitmapScaler = 0; |
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270 delete iInputBitmap; |
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271 iInputBitmap = 0; |
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272 if (iKindOfScaling == CTsGraphicFileScalingHandler::EKeepAspectRatioByExpanding) |
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273 { |
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274 User::LeaveIfError(iOutputBitmap->Resize(iNewSize)); |
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275 } |
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276 iNotify.ImageReadyCallBack(iStatus.Int(), iOutputBitmap); |
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277 break; |
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278 |
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279 } |
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280 } |
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281 |
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282 // ----------------------------------------------------------------------------- |
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283 /** |
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284 * Action to made before decoding graphic file operation. |
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285 * Parameters - the same meaning as in appropriate NewL/NewLC functions. |
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286 */ |
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287 void CTsGraphicFileScalingHandler::DecodingOperationL( RFs &aFs, |
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288 const TDesC &aFileName, |
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289 const TDesC8& aMimeType ) |
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290 { |
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291 // convert *.png to bitmap |
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292 iImageDecoder = CImageDecoder::FileNewL( aFs, aFileName, aMimeType ); |
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293 const TFrameInfo frameInfo( iImageDecoder->FrameInfo( 0 ) ); |
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294 iInputBitmap->Reset(); |
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295 User::LeaveIfError( iInputBitmap->Create(frameInfo.iOverallSizeInPixels, |
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296 frameInfo.iFrameDisplayMode ) ); |
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297 iImageDecoder->Convert( &iStatus, *iInputBitmap, 0 ); |
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298 iCurrentOperation = EConvertBitmapFromFile; |
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299 } |
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300 |
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301 // ----------------------------------------------------------------------------- |
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302 /** |
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303 * Action to made before scaling graphic file operation. |
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304 */ |
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305 void CTsGraphicFileScalingHandler::ScalingOperationL() |
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306 { |
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307 iBitmapScaler = CBitmapScaler::NewL(); |
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308 iBitmapScaler->SetQualityAlgorithm( CBitmapScaler::EMaximumQuality ); |
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309 FixForDisplayModeNotSupportedByScalingOperation(); |
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310 iOutputBitmap = new (ELeave)CFbsBitmap(); |
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311 User::LeaveIfError(iOutputBitmap->Create( NewSizeToScalingOperation(), |
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312 iInputBitmap->DisplayMode() ) ); |
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313 iBitmapScaler->Scale( &iStatus, *iInputBitmap, *iOutputBitmap, EFalse ); |
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314 iCurrentOperation = EScale; |
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315 } |
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316 |
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317 // ----------------------------------------------------------------------------- |
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318 // ----------------------------------------------------------------------------- |
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319 // |
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320 void CTsGraphicFileScalingHandler::RotationOperationL() |
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321 { |
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322 const CBitmapRotator::TRotationAngle rotation = |
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323 static_cast<CBitmapRotator::TRotationAngle>( RotationMode() ); |
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324 iBitmapRotator = CBitmapRotator::NewL(); |
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325 iBitmapRotator->Rotate( &iStatus, |
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326 *iInputBitmap, |
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327 rotation ); |
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328 iCurrentOperation = ERotate; |
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329 } |
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330 |
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331 // ----------------------------------------------------------------------------- |
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332 // |
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333 TInt CTsGraphicFileScalingHandler::RotationMode()const |
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334 { |
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335 const TInt rotation(iRotation%360); |
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336 TInt retVal(CBitmapRotator::EMirrorHorizontalAxis); |
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337 if( 270 <= rotation ) |
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338 { |
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339 retVal = CBitmapRotator::ERotation270DegreesClockwise; |
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340 } |
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341 else if( 180 <= rotation ) |
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342 { |
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343 retVal = CBitmapRotator::ERotation180DegreesClockwise; |
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344 } |
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345 else if( 90 <= rotation ) |
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346 { |
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347 retVal = CBitmapRotator::ERotation90DegreesClockwise; |
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348 } |
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349 return retVal; |
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350 } |
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351 |
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352 // ----------------------------------------------------------------------------- |
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353 TBool CTsGraphicFileScalingHandler::IsSupportedRotationMode() const |
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354 { |
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355 TBool retVal(EFalse); |
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356 switch( RotationMode() ) |
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357 { |
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358 case CBitmapRotator::ERotation90DegreesClockwise: |
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359 case CBitmapRotator::ERotation180DegreesClockwise: |
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360 case CBitmapRotator::ERotation270DegreesClockwise: |
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361 retVal = ETrue; |
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362 break; |
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363 } |
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364 return retVal; |
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365 } |
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366 // ----------------------------------------------------------------------------- |
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367 /** |
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368 * Fix for TDisplayMode == EColor16MAP not supported by scaling operation! |
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369 * ! ! ! ADD OTHER NOT SUPPORTED DISPLAY MODES ! ! ! |
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370 */ |
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371 void CTsGraphicFileScalingHandler::FixForDisplayModeNotSupportedByScalingOperation() |
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372 { |
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373 if (EColor16MAP == iInputBitmap->DisplayMode()) |
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374 { |
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375 iInputBitmap->SetDisplayMode(EColor16MA); |
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376 } |
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377 } |
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378 |
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379 // ----------------------------------------------------------------------------- |
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380 /** |
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381 * Algorithm to determine output bitmap (returned in ImageReadyCallBack) size |
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382 * after scaling operation. |
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383 */ |
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384 TSize CTsGraphicFileScalingHandler::NewSizeToScalingOperation() |
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385 { |
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386 TSize originalSize = iInputBitmap->SizeInPixels(); |
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387 float widthFactor = iNewSize.iWidth / (float)originalSize.iWidth; |
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388 float heightFactor = iNewSize.iHeight / (float)originalSize.iHeight; |
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389 TSize retSize(iNewSize); |
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390 |
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391 if(CTsGraphicFileScalingHandler::EKeepAspectRatio == iKindOfScaling) |
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392 { |
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393 retSize = (widthFactor < heightFactor) ? |
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394 TSize(iNewSize.iWidth, widthFactor * originalSize.iHeight) : |
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395 TSize(heightFactor * originalSize.iWidth, iNewSize.iHeight); |
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396 } |
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397 else if (CTsGraphicFileScalingHandler::EKeepAspectRatioByExpanding == iKindOfScaling) |
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398 { |
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399 retSize = (widthFactor < heightFactor) ? |
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400 TSize(heightFactor * originalSize.iWidth, iNewSize.iHeight) : |
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401 TSize(iNewSize.iWidth, widthFactor * originalSize.iHeight); |
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402 } |
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403 return retSize; |
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404 } |
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405 // ----------------------------------------------------------------------------- |
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406 /** |
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407 * Handles a leave occurring in the request completion event handler RunL(). |
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408 */ |
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409 TInt CTsGraphicFileScalingHandler::RunError( TInt aError ) |
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410 { |
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411 iNotify.ImageReadyCallBack( aError, 0 ); |
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412 return KErrNone; |
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413 } |
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