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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: Implementation of Image Viewer class. |
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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 "CIHLImageViewer.h" |
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21 |
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22 #include "CIHLBitmap.h" |
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23 #include "CIHLBitmapProcessor.h" |
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24 #include "IHLImplementationIds.h" |
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25 #include "IHLDebugPrint.h" // Debug print |
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26 #include <IHLInterfaceIds.h> |
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27 #include <MIHLViewerObserver.h> |
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28 #include <MIHLFileImage.h> |
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29 #include <fbs.h> |
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30 #include <e32math.h> |
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31 |
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32 // Private namespace for constants and functions |
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33 namespace |
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34 { |
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35 // Panic function |
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36 _LIT( KIHLPanicString, "IHLImageViewer" ); |
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37 void Panic( TInt aPanicCode ) { User::Panic( KIHLPanicString, aPanicCode ); } |
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38 } |
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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 // C++ constructor can NOT contain any code, that might leave. |
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44 // ----------------------------------------------------------------------------- |
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45 CIHLImageViewer::CIHLImageViewer( const TSize& aViewerSize, |
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46 MIHLFileImage& aSource, |
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47 MIHLBitmap& aDestination, |
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48 MIHLViewerObserver& aObserver, |
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49 const TUint32 aOptions ) |
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50 :CTimer( EPriorityNormal ), iObserver( aObserver ), |
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51 iSource( aSource ), iDestination( aDestination ), |
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52 iOptions( aOptions ), iViewerSize( aViewerSize ), iSrcBitmapScaleFactor(1) |
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53 { |
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54 CActiveScheduler::Add( this ); |
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55 iAnimDelay = 0; |
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56 iAnimLastFrameDrawTime = 0; |
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57 iAnimDrawStartFastTime = 0; |
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58 } |
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59 |
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60 // ----------------------------------------------------------------------------- |
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61 // |
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62 // Two-phased constructor. |
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63 // ----------------------------------------------------------------------------- |
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64 CIHLImageViewer* CIHLImageViewer::NewL( const TSize& aViewerSize, |
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65 MIHLFileImage& aSource, |
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66 MIHLBitmap& aDestination, |
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67 MIHLViewerObserver& aObserver, |
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68 const TUint32 aOptions ) |
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69 { |
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70 CIHLImageViewer* self = new( ELeave ) CIHLImageViewer( |
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71 aViewerSize, aSource, aDestination, aObserver, aOptions ); |
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72 CleanupStack::PushL( self ); |
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73 self->ConstructL(); |
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74 CleanupStack::Pop(); // self |
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75 return self; |
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76 } |
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77 |
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78 // ----------------------------------------------------------------------------- |
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79 // |
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80 // Symbian constructor can leave. |
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81 // ----------------------------------------------------------------------------- |
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82 void CIHLImageViewer::ConstructL() |
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83 { |
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84 CTimer::ConstructL(); |
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85 |
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86 HAL::Get(HALData::EFastCounterFrequency, iTickPeriod); |
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87 |
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88 iCacheSource = CIHLBitmap::NewL(); |
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89 iCacheDestination = CIHLBitmap::NewL(); |
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90 iProcessor = CIHLBitmapProcessor::NewL( iOptions ); |
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91 |
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92 // Initialize settings and start load (default is zoom to fit) |
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93 iSourceSize = iSource.Size(); |
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94 CalculateZoomToFitRatio(); |
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95 User::LeaveIfError( SetZoomRatio( iZoomToFitRatio ) ); |
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96 } |
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97 |
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98 // ----------------------------------------------------------------------------- |
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99 // Destructor |
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100 // ----------------------------------------------------------------------------- |
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101 CIHLImageViewer::~CIHLImageViewer() |
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102 { |
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103 Cancel(); |
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104 delete iProcessor; |
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105 delete iCacheDestination; |
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106 delete iCacheSource; |
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107 } |
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108 |
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109 // ----------------------------------------------------------------------------- |
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110 // CIHLImageViewer::Id |
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111 // ----------------------------------------------------------------------------- |
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112 TIHLInterfaceType CIHLImageViewer::Type() const |
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113 { |
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114 return TIHLInterfaceType( KIHLInterfaceIdImageViewer, KIHLImplementationIdImageViewer ); |
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115 } |
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116 |
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117 // ----------------------------------------------------------------------------- |
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118 // CIHLImageViewer::IsAnimation |
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119 // ----------------------------------------------------------------------------- |
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120 TBool CIHLImageViewer::IsAnimation() const |
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121 { |
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122 return iSource.IsAnimation(); |
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123 } |
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124 |
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125 // ----------------------------------------------------------------------------- |
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126 // CIHLImageViewer::SheduleNextFrame |
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127 // ----------------------------------------------------------------------------- |
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128 void CIHLImageViewer::SheduleNextFrame(TTimeIntervalMicroSeconds32 aDelay) |
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129 { |
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130 TInt delay=aDelay.Int(); |
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131 |
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132 if (delay == 0) // 0 second deleay set in GIF file |
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133 { |
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134 iAnimDelay = TTimeIntervalMicroSeconds32(100000-iAnimLastFrameDrawTime); |
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135 } |
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136 else |
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137 { |
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138 iAnimDelay = delay - iAnimLastFrameDrawTime; |
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139 } |
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140 |
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141 if (iAnimDelay.Int() <=0) //last frame drawn longer than animation frame interval. |
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142 { |
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143 iAnimDelay = KMinimumInterval; |
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144 } |
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145 iAnimInitFastTime=User::FastCounter(); //store the start time |
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146 HighRes(iAnimDelay); |
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147 } |
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148 |
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149 // ----------------------------------------------------------------------------- |
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150 // CIHLImageViewer::Play |
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151 // ----------------------------------------------------------------------------- |
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152 void CIHLImageViewer::Play() |
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153 { |
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154 if( iSource.IsAnimation() ) |
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155 { |
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156 iIsPlaying = ETrue; |
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157 if( iViewerState == EInactive) |
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158 { |
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159 iViewerState = EAnimation; |
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160 SheduleNextFrame( iSource.AnimationFrameDelay( iAnimationIndex ) ); |
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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 // CIHLImageViewer::Stop |
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167 // ----------------------------------------------------------------------------- |
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168 void CIHLImageViewer::Stop() |
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169 { |
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170 iIsPlaying = EFalse; |
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171 if( iViewerState == EAnimation ) |
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172 { |
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173 Cancel(); |
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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 // CIHLImageViewer::IsPlaying |
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179 // ----------------------------------------------------------------------------- |
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180 TBool CIHLImageViewer::IsPlaying() const |
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181 { |
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182 return iIsPlaying; |
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183 } |
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184 |
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185 // ----------------------------------------------------------------------------- |
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186 // CIHLImageViewer::AnimationFrameCount |
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187 // ----------------------------------------------------------------------------- |
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188 TInt CIHLImageViewer::AnimationFrameCount() const |
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189 { |
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190 return iSource.AnimationFrameCount(); |
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191 } |
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192 |
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193 // ----------------------------------------------------------------------------- |
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194 // CIHLImageViewer::AnimationFrame |
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195 // ----------------------------------------------------------------------------- |
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196 TInt CIHLImageViewer::AnimationFrame() const |
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197 { |
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198 return iAnimationIndex; |
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199 } |
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200 |
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201 // ----------------------------------------------------------------------------- |
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202 // CIHLImageViewer::SetAnimationFrame |
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203 // ----------------------------------------------------------------------------- |
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204 TInt CIHLImageViewer::SetAnimationFrame( TInt aFrameIndex ) |
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205 { |
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206 // Public API, boundary check -> panic also on hardware |
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207 __ASSERT_ALWAYS( aFrameIndex >= 0 && |
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208 aFrameIndex < iSource.AnimationFrameCount(), Panic( KErrArgument ) ); |
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209 |
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210 // Save new index and clear old source cache to force load new frame |
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211 iAnimationIndex = aFrameIndex; |
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212 iCacheSource->Reset(); |
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213 |
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214 // Start load |
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215 return ApplySettings(); |
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216 } |
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217 |
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218 // ----------------------------------------------------------------------------- |
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219 // CIHLImageViewer::SetViewerSize |
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220 // ----------------------------------------------------------------------------- |
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221 TInt CIHLImageViewer::SetViewerSize( const TSize& aViewerSize, int aSrcBitmapScaleFactor ) |
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222 { |
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223 // Public API, negative value check -> panic also on hardware |
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224 __ASSERT_ALWAYS( aViewerSize.iWidth >= 0 && |
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225 aViewerSize.iHeight >= 0, Panic( KErrArgument ) ); |
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226 |
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227 iSrcBitmapScaleFactor = aSrcBitmapScaleFactor; |
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228 |
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229 // Save new viewer size |
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230 iViewerSize = aViewerSize; |
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231 |
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232 // Recalculate source rect and destination size |
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233 CalculateSourceRectAndDestinationSize(); |
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234 |
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235 // Recalculate zoom to fit ratio |
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236 CalculateZoomToFitRatio(); |
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237 |
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238 // Start load |
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239 return ApplySettings(); |
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240 } |
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241 |
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242 // ----------------------------------------------------------------------------- |
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243 // CIHLImageViewer::ViewerSize |
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244 // ----------------------------------------------------------------------------- |
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245 TSize CIHLImageViewer::ViewerSize() const |
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246 { |
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247 return iViewerSize; |
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248 } |
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249 |
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250 // ----------------------------------------------------------------------------- |
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251 // CIHLImageViewer::MoveSourceRect |
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252 // ----------------------------------------------------------------------------- |
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253 TInt CIHLImageViewer::MoveSourceRect( TInt aDx, TInt aDy ) |
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254 { |
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255 TInt dx( aDx ); |
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256 TInt dy( aDy ); |
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257 switch( iRotationAngle ) |
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258 { |
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259 case ERotationAngle0: |
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260 { |
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261 break; |
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262 } |
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263 case ERotationAngle90: |
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264 { |
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265 dx = aDy; |
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266 dy = -aDx; |
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267 break; |
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268 } |
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269 case ERotationAngle180: |
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270 { |
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271 dx = -aDx; |
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272 dy = -aDy; |
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273 break; |
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274 } |
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275 case ERotationAngle270: |
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276 { |
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277 dx = -aDy; |
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278 dy = aDx; |
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279 break; |
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280 } |
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281 default: |
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282 { |
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283 // Internal state error, debug panic only |
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284 #ifdef _DEBUG |
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285 Panic( KErrGeneral ); |
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286 #endif |
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287 } |
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288 } |
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289 if( iHorizontalMirroring ) |
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290 { |
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291 dx = -dx; |
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292 } |
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293 if( iVerticalMirroring ) |
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294 { |
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295 dy = -dy; |
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296 } |
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297 |
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298 if( iSourceRect.iTl.iX + dx < 0 || |
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299 iSourceRect.iBr.iX + dx > iSourceSize.iWidth || |
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300 iSourceRect.iTl.iY + dy < 0 || |
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301 iSourceRect.iBr.iY + dy > iSourceSize.iHeight ) |
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302 { |
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303 return KErrArgument; |
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304 } |
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305 |
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306 iSourceRect.Move( dx, dy ); |
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307 |
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308 // Start load |
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309 return ApplySettings(); |
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310 } |
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311 |
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312 // ----------------------------------------------------------------------------- |
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313 // CIHLImageViewer::SetSourceRectPosition |
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314 // ----------------------------------------------------------------------------- |
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315 TInt CIHLImageViewer::SetSourceRectPosition( const TPoint& aPosition ) |
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316 { |
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317 TPoint newPosition( aPosition ); |
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318 TSize sourceRectSize( iSourceRect.Size() ); |
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319 switch( iRotationAngle ) |
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320 { |
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321 case ERotationAngle0: |
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322 { |
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323 break; |
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324 } |
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325 case ERotationAngle90: |
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326 { |
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327 newPosition.iX = aPosition.iY; |
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328 newPosition.iY = iSourceSize.iHeight - sourceRectSize.iHeight - aPosition.iX; |
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329 break; |
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330 } |
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331 case ERotationAngle180: |
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332 { |
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333 newPosition.iX = iSourceSize.iWidth - sourceRectSize.iWidth - aPosition.iX; |
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334 newPosition.iY = iSourceSize.iHeight - sourceRectSize.iHeight - aPosition.iY; |
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335 break; |
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336 } |
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337 case ERotationAngle270: |
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338 { |
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339 newPosition.iX = iSourceSize.iWidth - sourceRectSize.iWidth - aPosition.iY; |
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340 newPosition.iY = aPosition.iX; |
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341 break; |
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342 } |
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343 default: |
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344 { |
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345 // Internal state error, debug panic only |
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346 #ifdef _DEBUG |
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347 Panic( KErrGeneral ); |
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348 #endif |
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349 } |
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350 } |
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351 if( iHorizontalMirroring ) |
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352 { |
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353 newPosition.iX = iSourceSize.iWidth - sourceRectSize.iWidth - newPosition.iX; |
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354 } |
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355 if( iVerticalMirroring ) |
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356 { |
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357 newPosition.iY = iSourceSize.iHeight - sourceRectSize.iHeight - newPosition.iY; |
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358 } |
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359 |
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360 if( newPosition.iX < 0 || |
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361 newPosition.iX > ( iSourceSize.iWidth - sourceRectSize.iWidth ) || |
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362 newPosition.iY < 0 || |
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363 newPosition.iY > ( iSourceSize.iHeight - sourceRectSize.iHeight ) ) |
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364 { |
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365 return KErrArgument; |
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366 } |
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367 |
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368 iSourceRect = TRect( newPosition, sourceRectSize ); |
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369 |
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370 // Start load |
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371 return ApplySettings(); |
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372 } |
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373 |
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374 // ----------------------------------------------------------------------------- |
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375 // CIHLImageViewer::SourceRect |
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376 // ----------------------------------------------------------------------------- |
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377 TRect CIHLImageViewer::SourceRect() const |
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378 { |
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379 TRect mirroredSourceRect( iSourceRect ); |
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380 if( iHorizontalMirroring ) |
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381 { |
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382 mirroredSourceRect.iTl.iX = iSourceSize.iWidth - iSourceRect.iBr.iX; |
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383 mirroredSourceRect.iBr.iX = iSourceSize.iWidth - iSourceRect.iTl.iX; |
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384 } |
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385 if( iVerticalMirroring ) |
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386 { |
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387 mirroredSourceRect.iTl.iY = iSourceSize.iHeight - iSourceRect.iBr.iY; |
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388 mirroredSourceRect.iBr.iY = iSourceSize.iHeight - iSourceRect.iTl.iY; |
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389 } |
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390 |
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391 TRect rotatedSourceRect( mirroredSourceRect ); |
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392 switch( iRotationAngle ) |
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393 { |
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394 case ERotationAngle0: |
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395 { |
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396 break; |
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397 } |
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398 case ERotationAngle90: |
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399 { |
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400 rotatedSourceRect.iTl.iX = iSourceSize.iHeight - mirroredSourceRect.iBr.iY; |
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401 rotatedSourceRect.iTl.iY = mirroredSourceRect.iTl.iX; |
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402 rotatedSourceRect.iBr.iX = iSourceSize.iHeight - mirroredSourceRect.iTl.iY; |
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403 rotatedSourceRect.iBr.iY = mirroredSourceRect.iBr.iX; |
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404 break; |
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405 } |
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406 case ERotationAngle180: |
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407 { |
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408 rotatedSourceRect.iTl.iX = iSourceSize.iWidth - mirroredSourceRect.iBr.iX; |
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409 rotatedSourceRect.iTl.iY = iSourceSize.iHeight - mirroredSourceRect.iBr.iY; |
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410 rotatedSourceRect.iBr.iX = iSourceSize.iWidth - mirroredSourceRect.iTl.iX; |
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411 rotatedSourceRect.iBr.iY = iSourceSize.iHeight - mirroredSourceRect.iTl.iY; |
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412 break; |
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413 } |
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414 case ERotationAngle270: |
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415 { |
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416 rotatedSourceRect.iTl.iX = mirroredSourceRect.iTl.iY; |
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417 rotatedSourceRect.iTl.iY = iSourceSize.iWidth - mirroredSourceRect.iBr.iX; |
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418 rotatedSourceRect.iBr.iX = mirroredSourceRect.iBr.iY; |
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419 rotatedSourceRect.iBr.iY = iSourceSize.iWidth - mirroredSourceRect.iTl.iX; |
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420 break; |
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421 } |
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422 default: |
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423 { |
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424 // Internal state error, debug panic only |
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425 #ifdef _DEBUG |
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426 Panic( KErrGeneral ); |
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427 #endif |
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428 } |
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429 } |
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430 |
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431 return rotatedSourceRect; |
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432 } |
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433 |
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434 // ----------------------------------------------------------------------------- |
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435 // CIHLImageViewer::SourceSize |
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436 // ----------------------------------------------------------------------------- |
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437 TSize CIHLImageViewer::SourceSize() const |
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438 { |
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439 if( iRotationAngle == ERotationAngle90 || |
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440 iRotationAngle == ERotationAngle270 ) |
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441 { |
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442 return TSize( iSourceSize.iHeight, iSourceSize.iWidth ); |
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443 } |
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444 else |
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445 { |
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446 return iSourceSize; |
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447 } |
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448 } |
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449 |
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450 // ----------------------------------------------------------------------------- |
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451 // CIHLImageViewer::SetZoomRatio |
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452 // ----------------------------------------------------------------------------- |
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453 TInt CIHLImageViewer::SetZoomRatio( TReal aZoomRatio ) |
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454 { |
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455 if( aZoomRatio <= 0 || Math::IsInfinite( aZoomRatio ) ) |
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456 { |
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457 return KErrArgument; |
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458 } |
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459 |
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460 iZoomRatio = aZoomRatio; |
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461 |
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462 // Recalculate source rect and destination size |
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463 CalculateSourceRectAndDestinationSize(); |
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464 |
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465 // Start load |
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466 return ApplySettings(); |
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467 } |
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468 |
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469 // ----------------------------------------------------------------------------- |
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470 // CIHLImageViewer::ZoomRatio |
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471 // ----------------------------------------------------------------------------- |
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472 TReal CIHLImageViewer::ZoomRatio() const |
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473 { |
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474 return iZoomRatio; |
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475 } |
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476 |
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477 // ----------------------------------------------------------------------------- |
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478 // CIHLImageViewer::ZoomToFitRatio |
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479 // ----------------------------------------------------------------------------- |
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480 TReal CIHLImageViewer::ZoomToFitRatio() const |
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481 { |
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482 return iZoomToFitRatio; |
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483 } |
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484 |
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485 // ----------------------------------------------------------------------------- |
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486 // CIHLImageViewer::RotateClockwise |
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487 // ----------------------------------------------------------------------------- |
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488 TInt CIHLImageViewer::RotateClockwise() |
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489 { |
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490 TInt rotationAngle( iRotationAngle + ERotationAngle90 ); |
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491 if( rotationAngle > ERotationAngle270 ) |
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492 { |
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493 rotationAngle = ERotationAngle0; |
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494 } |
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495 |
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496 return SetRotationAngle( rotationAngle ); |
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497 } |
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498 |
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499 // ----------------------------------------------------------------------------- |
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500 // CIHLImageViewer::RotateCounterClockwise |
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501 // ----------------------------------------------------------------------------- |
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502 TInt CIHLImageViewer::RotateCounterClockwise() |
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503 { |
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504 TInt rotationAngle( iRotationAngle - ERotationAngle90 ); |
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505 if( rotationAngle < ERotationAngle0 ) |
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506 { |
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507 rotationAngle = ERotationAngle270; |
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508 } |
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509 |
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510 return SetRotationAngle( rotationAngle ); |
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511 } |
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512 |
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513 // ----------------------------------------------------------------------------- |
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514 // CIHLImageViewer::SetRotationAngle |
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515 // ----------------------------------------------------------------------------- |
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516 TInt CIHLImageViewer::SetRotationAngle( TInt aRotationAngle ) |
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517 { |
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518 if( aRotationAngle != ERotationAngle0 && |
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519 aRotationAngle != ERotationAngle90 && |
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520 aRotationAngle != ERotationAngle180 && |
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521 aRotationAngle != ERotationAngle270 ) |
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522 { |
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523 return KErrArgument; |
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524 } |
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525 |
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526 iRotationAngle = aRotationAngle; |
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527 |
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528 // Recalculate source rect and destination size |
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529 CalculateSourceRectAndDestinationSize(); |
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530 |
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531 // Recalculate zoom to fit ratio |
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532 CalculateZoomToFitRatio(); |
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533 |
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534 // Start load |
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535 return ApplySettings(); |
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536 } |
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537 |
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538 // ----------------------------------------------------------------------------- |
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539 // CIHLImageViewer::RotationAngle |
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540 // ----------------------------------------------------------------------------- |
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541 TInt CIHLImageViewer::RotationAngle() const |
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542 { |
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543 return iRotationAngle; |
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544 } |
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545 |
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546 // ----------------------------------------------------------------------------- |
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547 // CIHLImageViewer::SetVerticalMirroring |
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548 // ----------------------------------------------------------------------------- |
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549 TInt CIHLImageViewer::SetVerticalMirroring( TBool aValue ) |
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550 { |
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551 if( iVerticalMirroring != aValue ) |
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552 { |
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553 iVerticalMirroring = aValue; |
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554 |
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555 // Start load |
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556 return ApplySettings(); |
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557 } |
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558 return KErrNone; |
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559 } |
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560 |
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561 // ----------------------------------------------------------------------------- |
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562 // CIHLImageViewer::VerticalMirroring |
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563 // ----------------------------------------------------------------------------- |
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564 TBool CIHLImageViewer::VerticalMirroring() const |
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565 { |
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566 return iVerticalMirroring; |
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567 } |
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568 |
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569 // ----------------------------------------------------------------------------- |
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570 // CIHLImageViewer::SetHorizontalMirroring |
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571 // ----------------------------------------------------------------------------- |
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572 TInt CIHLImageViewer::SetHorizontalMirroring( TBool aValue ) |
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573 { |
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574 if( iHorizontalMirroring != aValue ) |
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575 { |
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576 iHorizontalMirroring = aValue; |
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577 return ApplySettings(); |
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578 } |
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579 return KErrNone; |
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580 } |
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581 |
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582 // ----------------------------------------------------------------------------- |
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583 // CIHLImageViewer::HorizontalMirroring |
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584 // ----------------------------------------------------------------------------- |
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585 TBool CIHLImageViewer::HorizontalMirroring() const |
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586 { |
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587 return iHorizontalMirroring; |
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588 } |
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589 |
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590 // ----------------------------------------------------------------------------- |
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591 // CIHLImageViewer::SetFilter |
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592 // ----------------------------------------------------------------------------- |
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593 void CIHLImageViewer::SetFilter( MIHLFilter* /*aFilter*/ ) |
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594 { |
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595 // Not in use |
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596 } |
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597 |
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598 |
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599 |
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600 // Private methods |
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601 // ----------------------------------------------------------------------------- |
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602 // CIHLImageViewer::DoCancel |
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603 // ----------------------------------------------------------------------------- |
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604 void CIHLImageViewer::DoCancel() |
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605 { |
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606 CTimer::DoCancel(); |
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607 switch( iViewerState ) |
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608 { |
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609 case ELoad: |
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610 { |
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611 // Cancel asynchronous source loading |
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612 iSource.CancelLoad(); |
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613 iCacheSource->Reset(); |
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614 break; |
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615 } |
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616 case EProcess: |
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617 { |
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618 // Cancel asynchronous processing |
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619 iProcessor->CancelProcess(); |
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620 iCacheDestination->Reset(); |
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621 break; |
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622 } |
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623 default: |
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624 { |
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625 break; |
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626 } |
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627 } |
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628 |
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629 // Set state to inactive |
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630 iViewerState = EInactive; |
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631 } |
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632 |
|
633 // ----------------------------------------------------------------------------- |
|
634 // CIHLImageViewer::RunL |
|
635 // ----------------------------------------------------------------------------- |
|
636 void CIHLImageViewer::RunL() |
|
637 { |
|
638 User::LeaveIfError( iStatus.Int() ); |
|
639 |
|
640 |
|
641 TInt err( KErrNone ); |
|
642 switch( iViewerState ) |
|
643 { |
|
644 case ELoad: |
|
645 { |
|
646 // Async load successful; start async processing if needed |
|
647 if( NeedAsyncProcess() ) |
|
648 { |
|
649 err = AsyncProcess(); |
|
650 if( !err ) |
|
651 { |
|
652 iViewerState = EProcess; |
|
653 SetActive(); |
|
654 } |
|
655 break; |
|
656 } |
|
657 else |
|
658 { |
|
659 iViewerState=EInactive; |
|
660 // Flowtrough to EProcess if no error |
|
661 err = SyncProcess(); |
|
662 if( err ) |
|
663 { |
|
664 break; |
|
665 } |
|
666 } |
|
667 } |
|
668 case EProcess: |
|
669 { |
|
670 // Process successful; finish and check if animation is needed |
|
671 err = Finish(); |
|
672 if( !err ) |
|
673 { |
|
674 TInt64 currentTime = User::FastCounter(); |
|
675 if(iAnimDrawStartFastTime > 0) |
|
676 { |
|
677 iAnimLastFrameDrawTime=(currentTime-iAnimDrawStartFastTime)*1000000/iTickPeriod; |
|
678 } |
|
679 |
|
680 if( iIsPlaying ) |
|
681 { |
|
682 iViewerState = EAnimation; |
|
683 SheduleNextFrame(iSource.AnimationFrameDelay( iAnimationIndex )); |
|
684 } |
|
685 else |
|
686 { |
|
687 iViewerState = EInactive; |
|
688 } |
|
689 // Notify client |
|
690 // NOTE! client may call any API method in this point! |
|
691 iObserver.ViewerBitmapChangedL(); |
|
692 } |
|
693 break; |
|
694 } |
|
695 case EAnimation: |
|
696 { |
|
697 // Check if still playing.. |
|
698 iAnimDrawStartFastTime = User::FastCounter(); |
|
699 if( iIsPlaying ) |
|
700 { |
|
701 // Change animation frame + 1 |
|
702 UpdateAnimationIndex(); |
|
703 err = AsyncLoad(); |
|
704 if( !err ) |
|
705 { |
|
706 iViewerState = ELoad; |
|
707 SetActive(); |
|
708 } |
|
709 else |
|
710 { |
|
711 iViewerState = EInactive; |
|
712 } |
|
713 } |
|
714 else |
|
715 { |
|
716 iViewerState = EInactive; |
|
717 } |
|
718 break; |
|
719 } |
|
720 default: |
|
721 { |
|
722 // Internal state error, debug panic only |
|
723 #ifdef _DEBUG |
|
724 Panic( KErrGeneral ); |
|
725 #endif |
|
726 } |
|
727 } |
|
728 |
|
729 |
|
730 User::LeaveIfError( err ); |
|
731 } |
|
732 |
|
733 // ----------------------------------------------------------------------------- |
|
734 // CIHLImageViewer::RunError |
|
735 // ----------------------------------------------------------------------------- |
|
736 TInt CIHLImageViewer::RunError( TInt aError ) |
|
737 { |
|
738 switch( iViewerState ) |
|
739 { |
|
740 case ELoad: |
|
741 { |
|
742 // Cleanup cached source if load has been failed |
|
743 iCacheSource->Reset(); |
|
744 break; |
|
745 } |
|
746 case EProcess: |
|
747 { |
|
748 // Cleanup cached destination if process has been failed |
|
749 iCacheDestination->Reset(); |
|
750 break; |
|
751 } |
|
752 default: |
|
753 { |
|
754 break; |
|
755 } |
|
756 } |
|
757 |
|
758 iViewerState = EInactive; |
|
759 iObserver.ViewerError( aError ); |
|
760 return KErrNone; |
|
761 } |
|
762 |
|
763 // ----------------------------------------------------------------------------- |
|
764 // CIHLImageViewer::Set |
|
765 // ----------------------------------------------------------------------------- |
|
766 TInt CIHLImageViewer::ApplySettings() |
|
767 { |
|
768 // Assert source rect and destination, debug build only |
|
769 #ifdef _DEBUG |
|
770 AssertSourceRectAndDestinationSize(); |
|
771 #endif |
|
772 |
|
773 // Cancel current process if any |
|
774 Cancel(); |
|
775 |
|
776 // Check if cached source bitmap is already valid for processing.. |
|
777 TBool validSourceCache( EFalse ); |
|
778 const CFbsBitmap& cacheSource = iCacheSource->Bitmap(); |
|
779 if( cacheSource.Handle() ) |
|
780 { |
|
781 const TSize cacheSize( cacheSource.SizeInPixels() ); |
|
782 const TSize minLoadSize( MinimumSourceLoadSize() ); |
|
783 if( cacheSize.iWidth >= minLoadSize.iWidth && |
|
784 cacheSize.iHeight >= minLoadSize.iHeight ) |
|
785 { |
|
786 validSourceCache = ETrue; |
|
787 } |
|
788 } |
|
789 |
|
790 // Start async load/process.. |
|
791 TInt err( KErrNone ); |
|
792 if( validSourceCache ) |
|
793 { |
|
794 if( NeedAsyncProcess() ) |
|
795 { |
|
796 err = AsyncProcess(); |
|
797 if( !err ) |
|
798 { |
|
799 iViewerState = EProcess; |
|
800 SetActive(); |
|
801 } |
|
802 } |
|
803 else |
|
804 { |
|
805 err = SyncProcess(); |
|
806 if( !err ) |
|
807 { |
|
808 iViewerState = EProcess; |
|
809 SelfComplete(); |
|
810 } |
|
811 } |
|
812 } |
|
813 else |
|
814 { |
|
815 err = AsyncLoad(); |
|
816 if( !err ) |
|
817 { |
|
818 iViewerState = ELoad; |
|
819 SetActive(); |
|
820 } |
|
821 } |
|
822 |
|
823 return err; |
|
824 } |
|
825 |
|
826 // ----------------------------------------------------------------------------- |
|
827 // CIHLImageViewer::AsyncLoad |
|
828 // ----------------------------------------------------------------------------- |
|
829 TInt CIHLImageViewer::AsyncLoad() |
|
830 { |
|
831 // Internal state check, debug panic only |
|
832 __ASSERT_DEBUG( !iCacheDestination->Bitmap().Handle(), Panic( KErrGeneral ) ); |
|
833 |
|
834 TInt err( KErrNone ); |
|
835 if( !iSource.IsAnimation() ) |
|
836 { |
|
837 // Do not reset animation frame because loading |
|
838 // might be faster if previous frame can be utilized |
|
839 iCacheSource->Reset(); |
|
840 } |
|
841 if( !iCacheSource->Bitmap().Handle() ) |
|
842 { |
|
843 TDisplayMode transparency( iSource.MaskDisplayMode() ); |
|
844 if( transparency ) |
|
845 { |
|
846 err = iCacheSource->Create( MinimumSourceLoadSize(), |
|
847 iSource.DisplayMode(), |
|
848 transparency ); |
|
849 } |
|
850 else |
|
851 { |
|
852 err = iCacheSource->Create( MinimumSourceLoadSize(), |
|
853 iSource.DisplayMode() ); |
|
854 } |
|
855 } |
|
856 |
|
857 // Load source bitmap |
|
858 if( !err ) |
|
859 { |
|
860 if( iSource.IsAnimation() ) |
|
861 { |
|
862 err = iSource.LoadAnimation( iStatus, *iCacheSource, iAnimationIndex ); |
|
863 } |
|
864 else |
|
865 { |
|
866 err = iSource.Load( iStatus, *iCacheSource, iSource.ImageIndex() ); |
|
867 } |
|
868 |
|
869 } |
|
870 |
|
871 // Error cleanup if needed |
|
872 if( err ) |
|
873 { |
|
874 iCacheSource->Reset(); |
|
875 } |
|
876 return err; |
|
877 } |
|
878 |
|
879 // ----------------------------------------------------------------------------- |
|
880 // CIHLImageViewer::NeedAsyncProcess |
|
881 // ----------------------------------------------------------------------------- |
|
882 TBool CIHLImageViewer::NeedAsyncProcess() |
|
883 { |
|
884 // Internal state check, debug panic only |
|
885 __ASSERT_DEBUG( iCacheSource->Bitmap().Handle(), Panic( KErrGeneral ) ); |
|
886 __ASSERT_DEBUG( !iCacheDestination->Bitmap().Handle(), Panic( KErrGeneral ) ); |
|
887 |
|
888 // First check if destination size differs from source size |
|
889 // (=scaling needed) |
|
890 TSize scaledSrcSize( iCacheSource->Bitmap().SizeInPixels() ); |
|
891 if( scaledSrcSize.iWidth != iDestinationSize.iWidth || |
|
892 scaledSrcSize.iHeight != iDestinationSize.iHeight ) |
|
893 { |
|
894 return ETrue; |
|
895 } |
|
896 |
|
897 // Then check if source rect and source size differs |
|
898 // (=clipping needed) |
|
899 if( iSourceRect.iTl != TPoint( 0,0 ) || |
|
900 iSourceRect.iBr != iSource.Size().AsPoint() ) |
|
901 { |
|
902 return ETrue; |
|
903 } |
|
904 |
|
905 // Finally check rotation and mirroring |
|
906 if( iRotationAngle == ERotationAngle0 && |
|
907 !iHorizontalMirroring && |
|
908 !iVerticalMirroring ) |
|
909 { |
|
910 return EFalse; |
|
911 } |
|
912 else if( iRotationAngle == ERotationAngle180 && |
|
913 iHorizontalMirroring && |
|
914 iVerticalMirroring ) |
|
915 { |
|
916 return EFalse; |
|
917 } |
|
918 else |
|
919 { |
|
920 return ETrue; |
|
921 } |
|
922 } |
|
923 |
|
924 // ----------------------------------------------------------------------------- |
|
925 // CIHLImageViewer::AsyncProcess |
|
926 // ----------------------------------------------------------------------------- |
|
927 TInt CIHLImageViewer::AsyncProcess() |
|
928 { |
|
929 IHL_DEBUG1( KIHLDebug, "IHL - CIHLImageViewer - AsyncProcess" ); |
|
930 |
|
931 // Internal state check, debug panic only |
|
932 __ASSERT_DEBUG( iCacheSource->Bitmap().Handle(), Panic( KErrGeneral ) ); |
|
933 __ASSERT_DEBUG( !iCacheDestination->Bitmap().Handle(), Panic( KErrGeneral ) ); |
|
934 |
|
935 const CFbsBitmap& srcBitmap = iCacheSource->Bitmap(); |
|
936 const CFbsBitmap& srcMask = iCacheSource->Mask(); |
|
937 TInt err( KErrNone ); |
|
938 |
|
939 // Create new cached destination |
|
940 if( srcMask.Handle() ) |
|
941 { |
|
942 err = iCacheDestination->Create( iDestinationSize, |
|
943 srcBitmap.DisplayMode(), srcMask.DisplayMode() ); |
|
944 } |
|
945 else |
|
946 { |
|
947 err = iCacheDestination->Create( iDestinationSize, srcBitmap.DisplayMode() ); |
|
948 } |
|
949 |
|
950 // Scale and clip bitmap from cached source to new cached destination |
|
951 if( !err ) |
|
952 { |
|
953 TRect scaledSourceRect( |
|
954 CalculateProcessSourceRect( srcBitmap.SizeInPixels() ) ); |
|
955 |
|
956 TRect destinationRect( CalculateProcessDestinationRect() ); |
|
957 |
|
958 err = iProcessor->Process( iStatus, *iCacheSource, scaledSourceRect, |
|
959 *iCacheDestination, destinationRect ); |
|
960 } |
|
961 |
|
962 // Error cleanup if needed |
|
963 if( err ) |
|
964 { |
|
965 iCacheDestination->Reset(); |
|
966 } |
|
967 |
|
968 return err; |
|
969 } |
|
970 |
|
971 // ----------------------------------------------------------------------------- |
|
972 // CIHLImageViewer::SyncProcess |
|
973 // ----------------------------------------------------------------------------- |
|
974 TInt CIHLImageViewer::SyncProcess() |
|
975 { |
|
976 IHL_DEBUG1( KIHLDebug, "IHL - CIHLImageViewer - SyncProcess" ); |
|
977 |
|
978 // Internal state check, debug panic only |
|
979 __ASSERT_DEBUG( iCacheSource->Bitmap().Handle(), Panic( KErrGeneral ) ); |
|
980 __ASSERT_DEBUG( !iCacheDestination->Bitmap().Handle(), Panic( KErrGeneral ) ); |
|
981 |
|
982 // Duplicate destination cache to destination bitmap |
|
983 TInt err( iCacheDestination->Copy( *iCacheSource, EFalse ) ); |
|
984 return err; |
|
985 } |
|
986 |
|
987 // ----------------------------------------------------------------------------- |
|
988 // CIHLImageViewer::Finish |
|
989 // ----------------------------------------------------------------------------- |
|
990 TInt CIHLImageViewer::Finish() |
|
991 { |
|
992 // Internal state check, debug panic only |
|
993 __ASSERT_DEBUG( iCacheDestination->Bitmap().Handle(), Panic( KErrGeneral ) ); |
|
994 |
|
995 // Duplicate destination cache to destination bitmap |
|
996 TInt err( iDestination.Copy( *iCacheDestination, ETrue ) ); |
|
997 iCacheDestination->Reset(); |
|
998 |
|
999 // Error cleanup if needed |
|
1000 if( err ) |
|
1001 { |
|
1002 iDestination.Reset(); |
|
1003 } |
|
1004 return err; |
|
1005 } |
|
1006 |
|
1007 // ----------------------------------------------------------------------------- |
|
1008 // CIHLImageViewer::UpdateAnimationIndex |
|
1009 // ----------------------------------------------------------------------------- |
|
1010 void CIHLImageViewer::UpdateAnimationIndex() |
|
1011 { |
|
1012 // Internal state check, debug panic only |
|
1013 __ASSERT_DEBUG( iIsPlaying, Panic( KErrGeneral ) ); |
|
1014 |
|
1015 // Check if animation is in last frame |
|
1016 if( iAnimationIndex == iSource.AnimationFrameCount() - 1 ) |
|
1017 { |
|
1018 iAnimationIndex = 0; |
|
1019 } |
|
1020 else |
|
1021 { |
|
1022 // Not in last frame; move to next frame |
|
1023 iAnimationIndex++; |
|
1024 } |
|
1025 } |
|
1026 |
|
1027 // ----------------------------------------------------------------------------- |
|
1028 // CIHLImageViewer::SelfComplete |
|
1029 // ----------------------------------------------------------------------------- |
|
1030 void CIHLImageViewer::SelfComplete() |
|
1031 { |
|
1032 SetActive(); |
|
1033 iStatus = KRequestPending; |
|
1034 TRequestStatus* status = &iStatus; |
|
1035 User::RequestComplete( status, KErrNone ); |
|
1036 } |
|
1037 |
|
1038 // ----------------------------------------------------------------------------- |
|
1039 // CIHLImageViewer::MinimumSourceLoadSize |
|
1040 // ----------------------------------------------------------------------------- |
|
1041 TSize CIHLImageViewer::MinimumSourceLoadSize() |
|
1042 { |
|
1043 TSize minumumLoadSize( iSource.Size() ); |
|
1044 |
|
1045 if( iSource.IsFullyScaleable() ) |
|
1046 { |
|
1047 const TSize originalSize( iSource.Size() ); |
|
1048 switch( iRotationAngle ) |
|
1049 { |
|
1050 case ERotationAngle0: |
|
1051 case ERotationAngle180: |
|
1052 { |
|
1053 minumumLoadSize.iWidth = originalSize.iWidth * iDestinationSize.iWidth / Abs( iSourceRect.Width() ); |
|
1054 minumumLoadSize.iHeight = originalSize.iHeight * iDestinationSize.iHeight / Abs( iSourceRect.Height() ); |
|
1055 break; |
|
1056 } |
|
1057 case ERotationAngle90: |
|
1058 case ERotationAngle270: |
|
1059 { |
|
1060 minumumLoadSize.iWidth = originalSize.iWidth * iDestinationSize.iWidth / Abs( iSourceRect.Height() ); |
|
1061 minumumLoadSize.iHeight = originalSize.iHeight * iDestinationSize.iHeight / Abs( iSourceRect.Width() ); |
|
1062 break; |
|
1063 } |
|
1064 default: |
|
1065 { |
|
1066 // Internal state error, debug panic only |
|
1067 #ifdef _DEBUG |
|
1068 Panic( KErrGeneral ); |
|
1069 #endif |
|
1070 } |
|
1071 } |
|
1072 |
|
1073 // Limit fully scaleable loadsize to original size |
|
1074 if( minumumLoadSize.iWidth > originalSize.iWidth || |
|
1075 minumumLoadSize.iHeight > originalSize.iHeight ) |
|
1076 { |
|
1077 minumumLoadSize = originalSize; |
|
1078 } |
|
1079 } |
|
1080 else |
|
1081 { |
|
1082 const RArray<TSize>& loadSizeArray = iSource.CustomLoadSizeArray(); |
|
1083 const TInt count( loadSizeArray.Count() ); |
|
1084 |
|
1085 if( count ) |
|
1086 { |
|
1087 TRect loadRect; |
|
1088 TSize loadRectSize; |
|
1089 TBool indexFound( EFalse ); |
|
1090 for( TInt i( 0 ); ( i < count ) && !indexFound; ++i ) |
|
1091 { |
|
1092 loadRect = CalculateProcessSourceRect( loadSizeArray[ i ] ); |
|
1093 loadRectSize = loadRect.Size(); |
|
1094 loadRectSize.iWidth = Abs( loadRectSize.iWidth ); |
|
1095 loadRectSize.iHeight = Abs( loadRectSize.iHeight ); |
|
1096 |
|
1097 if( iDestinationSize.iWidth <= loadRectSize.iWidth && |
|
1098 iDestinationSize.iHeight <= loadRectSize.iHeight ) |
|
1099 { |
|
1100 minumumLoadSize = loadSizeArray[ i ]; |
|
1101 indexFound = ETrue; |
|
1102 } |
|
1103 } |
|
1104 } |
|
1105 } |
|
1106 |
|
1107 return minumumLoadSize; |
|
1108 } |
|
1109 |
|
1110 // ----------------------------------------------------------------------------- |
|
1111 // CIHLImageViewer::CalculateProcessSourceRect |
|
1112 // ----------------------------------------------------------------------------- |
|
1113 TRect CIHLImageViewer::CalculateProcessSourceRect( const TSize& aLoadSize ) |
|
1114 { |
|
1115 const TSize originalSize( iSource.Size() ); |
|
1116 TRect loadRect; |
|
1117 if ( aLoadSize.iWidth > KErrNone && aLoadSize.iHeight > KErrNone ) |
|
1118 { |
|
1119 loadRect.iTl.iX = iSourceRect.iTl.iX * aLoadSize.iWidth / originalSize.iWidth; |
|
1120 loadRect.iTl.iY = iSourceRect.iTl.iY * aLoadSize.iHeight / originalSize.iHeight; |
|
1121 loadRect.iBr.iX = iSourceRect.iBr.iX * aLoadSize.iWidth / originalSize.iWidth; |
|
1122 loadRect.iBr.iY = iSourceRect.iBr.iY * aLoadSize.iHeight / originalSize.iHeight; |
|
1123 } |
|
1124 else |
|
1125 { |
|
1126 loadRect.SetRect(0,0,0,0); |
|
1127 return loadRect; |
|
1128 } |
|
1129 |
|
1130 switch( iRotationAngle ) |
|
1131 { |
|
1132 case ERotationAngle0: |
|
1133 { |
|
1134 break; |
|
1135 } |
|
1136 case ERotationAngle90: |
|
1137 { |
|
1138 TInt tmp( loadRect.iTl.iY ); |
|
1139 loadRect.iTl.iY = loadRect.iBr.iY; |
|
1140 loadRect.iBr.iY = tmp; |
|
1141 break; |
|
1142 } |
|
1143 case ERotationAngle180: |
|
1144 { |
|
1145 TPoint tmp( loadRect.iTl ); |
|
1146 loadRect.iTl = loadRect.iBr; |
|
1147 loadRect.iBr = tmp; |
|
1148 break; |
|
1149 } |
|
1150 case ERotationAngle270: |
|
1151 { |
|
1152 TInt tmp( loadRect.iTl.iX ); |
|
1153 loadRect.iTl.iX = loadRect.iBr.iX; |
|
1154 loadRect.iBr.iX = tmp; |
|
1155 break; |
|
1156 } |
|
1157 default: |
|
1158 { |
|
1159 // Internal state error, debug panic only |
|
1160 #ifdef _DEBUG |
|
1161 Panic( KErrGeneral ); |
|
1162 #endif |
|
1163 } |
|
1164 } |
|
1165 |
|
1166 return loadRect; |
|
1167 } |
|
1168 |
|
1169 // ----------------------------------------------------------------------------- |
|
1170 // CIHLImageViewer::CalculateProcessDestinationRect |
|
1171 // ----------------------------------------------------------------------------- |
|
1172 TRect CIHLImageViewer::CalculateProcessDestinationRect() |
|
1173 { |
|
1174 TRect dstRect( iDestinationSize ); |
|
1175 switch( iRotationAngle ) |
|
1176 { |
|
1177 case ERotationAngle0: |
|
1178 case ERotationAngle180: |
|
1179 { |
|
1180 if( iHorizontalMirroring ) |
|
1181 { |
|
1182 TInt tmp( dstRect.iTl.iX ); |
|
1183 dstRect.iTl.iX = dstRect.iBr.iX; |
|
1184 dstRect.iBr.iX = tmp; |
|
1185 } |
|
1186 if( iVerticalMirroring ) |
|
1187 { |
|
1188 TInt tmp( dstRect.iTl.iY ); |
|
1189 dstRect.iTl.iY = dstRect.iBr.iY; |
|
1190 dstRect.iBr.iY = tmp; |
|
1191 } |
|
1192 break; |
|
1193 } |
|
1194 case ERotationAngle90: |
|
1195 case ERotationAngle270: |
|
1196 { |
|
1197 if( iHorizontalMirroring ) |
|
1198 { |
|
1199 TInt tmp( dstRect.iTl.iY ); |
|
1200 dstRect.iTl.iY = dstRect.iBr.iY; |
|
1201 dstRect.iBr.iY = tmp; |
|
1202 } |
|
1203 if( iVerticalMirroring ) |
|
1204 { |
|
1205 TInt tmp( dstRect.iTl.iX ); |
|
1206 dstRect.iTl.iX = dstRect.iBr.iX; |
|
1207 dstRect.iBr.iX = tmp; |
|
1208 } |
|
1209 break; |
|
1210 } |
|
1211 default: |
|
1212 { |
|
1213 // Internal state error, debug panic only |
|
1214 #ifdef _DEBUG |
|
1215 Panic( KErrGeneral ); |
|
1216 #endif |
|
1217 } |
|
1218 } |
|
1219 return dstRect; |
|
1220 } |
|
1221 |
|
1222 // ----------------------------------------------------------------------------- |
|
1223 // CIHLImageViewer::CalculateZoomToFitRatio |
|
1224 // ----------------------------------------------------------------------------- |
|
1225 void CIHLImageViewer::CalculateZoomToFitRatio() |
|
1226 { |
|
1227 TSize sourceSize( SourceSize() ); |
|
1228 TReal widthRatio( TReal( iViewerSize.iWidth ) / TReal( sourceSize.iWidth ) ); |
|
1229 TReal heightRatio( TReal( iViewerSize.iHeight ) / TReal( sourceSize.iHeight ) ); |
|
1230 |
|
1231 if( iOptions & MIHLImageViewer::EOptionIgnoreAspectRatio ) |
|
1232 { |
|
1233 iZoomToFitRatio = ( widthRatio > heightRatio ) ? widthRatio : heightRatio; |
|
1234 } |
|
1235 else |
|
1236 { |
|
1237 iZoomToFitRatio = ( widthRatio < heightRatio ) ? widthRatio : heightRatio; |
|
1238 } |
|
1239 } |
|
1240 |
|
1241 // ----------------------------------------------------------------------------- |
|
1242 // CIHLImageViewer::CalculateSourceRectAndDestinationSize |
|
1243 // ----------------------------------------------------------------------------- |
|
1244 void CIHLImageViewer::CalculateSourceRectAndDestinationSize() |
|
1245 { |
|
1246 // Calculate new source rect |
|
1247 TSize oldSourceRectSize( iSourceRect.Size() ); |
|
1248 |
|
1249 TReal newSourceRectWidth; |
|
1250 TReal newSourceRectHeight; |
|
1251 TReal widthZoomRatio( iZoomRatio ); |
|
1252 TReal heightZoomRatio( iZoomRatio ); |
|
1253 |
|
1254 if( iOptions & MIHLImageViewer::EOptionIgnoreAspectRatio ) |
|
1255 { |
|
1256 TReal widthRatio( TReal( iViewerSize.iWidth ) / TReal( iSourceSize.iWidth ) ); |
|
1257 TReal heightRatio( TReal( iViewerSize.iHeight ) / TReal( iSourceSize.iHeight ) ); |
|
1258 if( widthRatio < heightRatio ) |
|
1259 { |
|
1260 widthZoomRatio = widthZoomRatio * widthRatio / heightRatio; |
|
1261 } |
|
1262 else |
|
1263 { |
|
1264 heightZoomRatio = heightZoomRatio * heightRatio / widthRatio; |
|
1265 } |
|
1266 } |
|
1267 |
|
1268 if( iRotationAngle == ERotationAngle90 || |
|
1269 iRotationAngle == ERotationAngle270 ) |
|
1270 { |
|
1271 newSourceRectWidth = iSrcBitmapScaleFactor * iViewerSize.iHeight / heightZoomRatio; //widthZoomRatio |
|
1272 newSourceRectHeight = iSrcBitmapScaleFactor * iViewerSize.iWidth / widthZoomRatio; //heightZoomRatio |
|
1273 } |
|
1274 else |
|
1275 { |
|
1276 newSourceRectWidth = iSrcBitmapScaleFactor * iViewerSize.iWidth / widthZoomRatio; |
|
1277 newSourceRectHeight = iSrcBitmapScaleFactor * iViewerSize.iHeight / heightZoomRatio; |
|
1278 } |
|
1279 |
|
1280 // Check if source rect is not larger than source area |
|
1281 if( newSourceRectWidth > iSourceSize.iWidth ) |
|
1282 { |
|
1283 newSourceRectWidth = iSourceSize.iWidth; |
|
1284 } |
|
1285 if( newSourceRectHeight > iSourceSize.iHeight ) |
|
1286 { |
|
1287 newSourceRectHeight = iSourceSize.iHeight; |
|
1288 } |
|
1289 |
|
1290 // Rounding the results |
|
1291 TReal roundedWidth; |
|
1292 Math::Round( roundedWidth, newSourceRectWidth, 0 ); |
|
1293 TReal roundedHeight; |
|
1294 Math::Round( roundedHeight, newSourceRectHeight, 0 ); |
|
1295 |
|
1296 iSourceRect.SetWidth( (TInt)roundedWidth ); |
|
1297 iSourceRect.SetHeight( (TInt)roundedHeight ); |
|
1298 |
|
1299 // Calculate actual destination size (always same or smaller than iViewerSize !) |
|
1300 if( iRotationAngle == ERotationAngle90 || |
|
1301 iRotationAngle == ERotationAngle270 ) |
|
1302 { |
|
1303 iDestinationSize.iWidth = (TInt)( newSourceRectHeight * widthZoomRatio ); //heightZoomRatio |
|
1304 iDestinationSize.iHeight = (TInt)( newSourceRectWidth * heightZoomRatio ); //widthZoomRatio |
|
1305 } |
|
1306 else |
|
1307 { |
|
1308 iDestinationSize.iWidth = (TInt)( newSourceRectWidth * widthZoomRatio ); |
|
1309 iDestinationSize.iHeight = (TInt)( newSourceRectHeight * heightZoomRatio ); |
|
1310 } |
|
1311 // Check that destination size is not rounded to zero |
|
1312 if( iDestinationSize.iWidth == 0 ) |
|
1313 { |
|
1314 iDestinationSize.iWidth = 1; |
|
1315 } |
|
1316 if( iDestinationSize.iHeight == 0 ) |
|
1317 { |
|
1318 iDestinationSize.iHeight = 1; |
|
1319 } |
|
1320 |
|
1321 // Move source rect keeping center point in same location |
|
1322 iSourceRect.Move( ( oldSourceRectSize.iWidth - (TInt)newSourceRectWidth ) / 2, |
|
1323 ( oldSourceRectSize.iHeight - (TInt)newSourceRectHeight ) / 2 ); |
|
1324 |
|
1325 // Move rect if partially out of source area |
|
1326 TPoint moveOffset( 0, 0 ); |
|
1327 if( iSourceRect.iTl.iX < 0 ) |
|
1328 { |
|
1329 moveOffset.iX = -iSourceRect.iTl.iX; |
|
1330 } |
|
1331 else if( iSourceRect.iBr.iX > iSourceSize.iWidth ) |
|
1332 { |
|
1333 moveOffset.iX = iSourceSize.iWidth - iSourceRect.iBr.iX; |
|
1334 } |
|
1335 if( iSourceRect.iTl.iY < 0 ) //lint !e961 |
|
1336 { |
|
1337 moveOffset.iY = -iSourceRect.iTl.iY; |
|
1338 } |
|
1339 else if( iSourceRect.iBr.iY > iSourceSize.iHeight ) |
|
1340 { |
|
1341 moveOffset.iY = iSourceSize.iHeight - iSourceRect.iBr.iY; |
|
1342 } |
|
1343 iSourceRect.Move( moveOffset ); //lint !e961 |
|
1344 |
|
1345 // Assert that rectangle is valid, debug build only |
|
1346 #ifdef _DEBUG |
|
1347 AssertSourceRectAndDestinationSize(); |
|
1348 #endif |
|
1349 } |
|
1350 |
|
1351 // ----------------------------------------------------------------------------- |
|
1352 // CIHLImageViewer::AssertSourceRectAndDestinationSize |
|
1353 // Used in debug build only |
|
1354 // ----------------------------------------------------------------------------- |
|
1355 #ifdef _DEBUG |
|
1356 void CIHLImageViewer::AssertSourceRectAndDestinationSize() |
|
1357 { |
|
1358 if( iSourceRect.iTl.iX < 0 || |
|
1359 iSourceRect.iBr.iX > iSourceSize.iWidth || |
|
1360 iSourceRect.iTl.iY < 0 || |
|
1361 iSourceRect.iBr.iY > iSourceSize.iHeight || |
|
1362 iDestinationSize.iWidth <= 0 || iDestinationSize.iHeight <= 0 ) |
|
1363 { |
|
1364 Panic( KErrGeneral ); |
|
1365 } |
|
1366 } |
|
1367 #endif |
|
1368 |
|
1369 // End of File |