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1 /* |
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2 * Copyright (c) 2004 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: Image Transforms subsystem. |
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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 |
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21 #include <e32svr.h> |
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22 #include <fbs.h> |
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23 |
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24 #include "cvtimagerotator.h" |
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25 #include "CVtImageRotatorImplMirrorFlip.h" |
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26 #include "CVtImageRotatorImplClockwise.h" |
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27 |
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28 // CONSTANTS |
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29 |
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30 _LIT( KModuleName, "CVtImageRotator" ); |
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31 |
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32 // MACROS |
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33 |
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34 #ifdef _DEBUG |
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35 # define __IF_DEBUG(t) {RDebug::t;} |
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36 #else |
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37 # define __IF_DEBUG(t) |
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38 #endif |
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39 |
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40 // ============================ MEMBER FUNCTIONS =============================== |
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41 |
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42 // ----------------------------------------------------------------------------- |
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43 // CVtImageRotator::NewL( MVtImageRotatorObserver& aObserver, |
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44 // TPriority aPriority ) |
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45 // ----------------------------------------------------------------------------- |
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46 EXPORT_C CVtImageRotator* CVtImageRotator::NewL( |
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47 MVtImageRotatorObserver& aObserver, |
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48 TPriority aPriority) |
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49 { |
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50 CVtImageRotator* self = new ( ELeave ) CVtImageRotator( aObserver, aPriority ); |
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51 CleanupStack::PushL( self ); |
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52 self->ConstructL(); |
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53 CleanupStack::Pop(); // self |
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54 return self; |
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55 } |
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56 |
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57 // ----------------------------------------------------------------------------- |
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58 // CVtImageRotator::~CVtImageRotator() |
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59 // ----------------------------------------------------------------------------- |
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60 EXPORT_C CVtImageRotator::~CVtImageRotator() |
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61 { |
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62 Cancel(); |
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63 delete iAsyncCallBack; |
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64 delete iHeapLock; |
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65 delete iRotatorImpl; |
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66 } |
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67 |
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68 // ----------------------------------------------------------------------------- |
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69 // CVtImageRotator::ScaleL( const CVtImage& aSource, |
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70 // CVtImage& aTarget, const TRotationAngle& aAngle ) |
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71 // ----------------------------------------------------------------------------- |
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72 EXPORT_C void CVtImageRotator::RotateL( const CVtImage& aSource, |
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73 CVtImage& aTarget, const TRotationAngle& aAngle ) |
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74 { |
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75 if ( !IsActive() ) |
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76 { |
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77 CreateRotatorL( aAngle ); |
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78 iRotatorImpl->SetSourceTargetL( aSource, aTarget ); |
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79 iCancelled = EFalse; |
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80 Activate(); |
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81 iAsyncCallBack->CallBack(); |
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82 } |
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83 else |
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84 { |
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85 User::Panic( KModuleName(), EBusy ); |
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86 } |
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87 } |
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88 |
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89 // ----------------------------------------------------------------------------- |
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90 // CVtImageRotator::Rotate |
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91 // ----------------------------------------------------------------------------- |
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92 EXPORT_C void CVtImageRotator::Rotate( |
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93 const CVtImage& aSource, |
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94 CVtImage& aTarget, const TRotationAngle& aAngle ) |
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95 { |
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96 TRAPD( result, RotateL( aSource, aTarget, aAngle ) ); |
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97 if ( result != KErrNone ) |
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98 { |
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99 Activate(); |
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100 Signal( result ); |
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101 } |
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102 } |
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103 |
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104 // ----------------------------------------------------------------------------- |
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105 // CVtImageRotator::CVtImageRotator( MVtImageRotatorObserver& aObserver, |
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106 // TPriority aPriority ) |
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107 // ----------------------------------------------------------------------------- |
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108 CVtImageRotator::CVtImageRotator( MVtImageRotatorObserver& aObserver, |
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109 TPriority aPriority ) |
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110 : CActive( aPriority ), iObserver( aObserver ) |
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111 { |
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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 // CVtImageRotator::ConstructL() |
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117 // ----------------------------------------------------------------------------- |
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118 void CVtImageRotator::ConstructL() |
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119 { |
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120 iHeapLock = new ( ELeave ) CFbsBitmap(); |
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121 iHeapLock->Create( TSize( 1, 1 ), EColor256 ); |
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122 iAsyncCallBack = new ( ELeave ) |
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123 CAsyncCallBack( TCallBack( StaticRotate, this ), Priority() ); |
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124 } |
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125 |
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126 // ----------------------------------------------------------------------------- |
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127 // CVtImageRotator::CreateRotatorL( const TRotationAngle& aAngle ) |
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128 // ----------------------------------------------------------------------------- |
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129 void CVtImageRotator::CreateRotatorL( const TRotationAngle& aAngle ) |
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130 { |
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131 if( iRotatorImpl ) |
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132 { |
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133 if( iRotatorImpl->SupportsRotationAngle( aAngle ) ) |
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134 { |
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135 iRotatorImpl->SetAngle( aAngle ); |
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136 return; |
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137 } |
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138 delete iRotatorImpl; |
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139 iRotatorImpl = 0; |
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140 } |
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141 |
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142 switch( aAngle ) |
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143 { |
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144 case E90DegreesClockwise: |
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145 case E270DegreesClockwise: |
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146 iRotatorImpl = |
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147 new ( ELeave ) CVtImageRotatorImplClockwise( aAngle ); |
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148 break; |
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149 |
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150 case EMirrorHorizontalAxis: |
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151 case EFlipVerticalAxis: |
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152 case E180DegreesClockwise: |
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153 iRotatorImpl = |
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154 new ( ELeave ) CVtImageRotatorImplMirrorFlip( aAngle ); |
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155 break; |
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156 |
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157 default: |
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158 User::Leave( KErrNotSupported ); |
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159 } |
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160 } |
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161 |
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162 // ----------------------------------------------------------------------------- |
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163 // CVtImageRotator::Activate |
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164 // ----------------------------------------------------------------------------- |
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165 void CVtImageRotator::Activate() |
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166 { |
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167 iStatus = KRequestPending; |
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168 SetActive(); |
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169 } |
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170 |
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171 // ----------------------------------------------------------------------------- |
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172 // CVtImageRotator::Signal( TInt aError ) |
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173 // ----------------------------------------------------------------------------- |
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174 void CVtImageRotator::Signal( TInt aError ) |
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175 { |
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176 TRequestStatus* pStatus = &iStatus; |
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177 User::RequestComplete( pStatus, aError ); |
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178 } |
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179 |
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180 // ----------------------------------------------------------------------------- |
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181 // CVtImageRotator::RunL() |
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182 // ----------------------------------------------------------------------------- |
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183 void CVtImageRotator::RunL() |
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184 { |
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185 iObserver.RotationFinished( iStatus.Int() ); |
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186 } |
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187 |
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188 // ----------------------------------------------------------------------------- |
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189 // CVtImageRotator::DoCancel() |
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190 // ----------------------------------------------------------------------------- |
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191 void CVtImageRotator::DoCancel() |
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192 { |
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193 if ( iStatus == KRequestPending ) |
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194 { |
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195 iCancelled = ETrue; |
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196 Signal( KErrCancel ); |
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197 iObserver.RotationFinished( KErrCancel ); |
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198 } |
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199 } |
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200 |
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201 // ----------------------------------------------------------------------------- |
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202 // CVtImageRotator::StaticRotate() |
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203 // ----------------------------------------------------------------------------- |
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204 TInt CVtImageRotator::StaticRotate( TAny* aPtr ) |
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205 { |
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206 CVtImageRotator* self = reinterpret_cast< CVtImageRotator* >( aPtr ); |
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207 self->DoRotate(); |
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208 return KErrNone; |
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209 } |
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210 |
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211 // ----------------------------------------------------------------------------- |
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212 // CVtImageRotator::DoRotate |
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213 // ----------------------------------------------------------------------------- |
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214 void CVtImageRotator::DoRotate() |
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215 { |
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216 if ( !iCancelled ) |
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217 { |
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218 TBool more; |
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219 TBool needsLock = iRotatorImpl->NeedHeapLock(); |
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220 if( needsLock ) |
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221 { |
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222 iHeapLock->LockHeap( ETrue ); |
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223 } |
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224 TInt result = iRotatorImpl->Rotate( more ); |
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225 if( needsLock ) |
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226 { |
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227 iHeapLock->UnlockHeap( ETrue ); |
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228 } |
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229 if( !more || ( result != KErrNone ) ) |
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230 { |
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231 Signal( result ); |
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232 } |
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233 else |
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234 { |
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235 iAsyncCallBack->CallBack(); |
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236 } |
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237 } |
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238 } |
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239 |
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240 // ========================== OTHER EXPORTED FUNCTIONS ========================= |
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241 |
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242 // End of File |
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243 |
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244 |