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 scaling processor |
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15 * : using MIHLBitmap type bitmaps. |
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16 * |
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17 */ |
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18 |
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19 |
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20 |
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21 // INCLUDE FILES |
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22 #include "CIHLBitmapProcessor.h" |
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23 |
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24 #include "CIHLScaler.h" |
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25 #include "CIHLBitmap.h" |
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26 #include "IHLImplementationIds.h" |
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27 #include "IHLDebugPrint.h" // Debug print |
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28 |
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29 #include <IHLInterfaceIds.h> |
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30 #include <fbs.h> // CFbsBitmap |
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31 #include <bitdev.h> // CFbsBitmapDevice, CFbsBitGc |
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32 |
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33 // Private namespace for constants and functions |
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34 namespace |
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35 { |
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36 // Panic function |
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37 _LIT( KIHLPanicString, "IHLBitmapProcessor" ); |
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38 void Panic( TInt aPanicCode ) { User::Panic( KIHLPanicString, aPanicCode ); } |
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39 } |
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40 |
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41 // ============================ MEMBER FUNCTIONS =============================== |
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42 // ----------------------------------------------------------------------------- |
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43 // |
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44 // C++ default constructor can NOT contain any code, that |
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45 // might leave. |
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46 // ----------------------------------------------------------------------------- |
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47 CIHLBitmapProcessor::CIHLBitmapProcessor() |
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48 :CActive( CActive::EPriorityStandard ) |
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49 { |
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50 CActiveScheduler::Add( this ); |
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51 } |
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52 |
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53 // ----------------------------------------------------------------------------- |
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54 // |
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55 // Two-phased constructor. |
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56 // ----------------------------------------------------------------------------- |
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57 CIHLBitmapProcessor* CIHLBitmapProcessor::NewL( const TUint32 aOptions ) |
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58 { |
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59 CIHLBitmapProcessor* self = new( ELeave ) CIHLBitmapProcessor(); |
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60 CleanupStack::PushL( self ); |
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61 self->ConstructL( aOptions ); |
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62 CleanupStack::Pop(); // self |
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63 return self; |
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64 } |
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65 |
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66 // ----------------------------------------------------------------------------- |
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67 // |
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68 // Symbian constructor can leave. |
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69 // ----------------------------------------------------------------------------- |
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70 void CIHLBitmapProcessor::ConstructL( const TUint32 aOptions ) |
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71 { |
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72 iScaler = CIHLScaler::NewL( aOptions ); |
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73 } |
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74 |
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75 // ----------------------------------------------------------------------------- |
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76 // Destructor |
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77 // ----------------------------------------------------------------------------- |
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78 CIHLBitmapProcessor::~CIHLBitmapProcessor() |
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79 { |
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80 Cancel(); |
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81 delete iScaler; |
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82 } |
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83 |
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84 // ----------------------------------------------------------------------------- |
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85 // CIHLBitmapProcessor::Type |
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86 // ----------------------------------------------------------------------------- |
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87 TIHLInterfaceType CIHLBitmapProcessor::Type() const |
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88 { |
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89 return TIHLInterfaceType( KIHLInterfaceIdBitmapProcessor, KIHLImplementationIdBitmapProcessor ); |
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90 } |
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91 |
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92 // ----------------------------------------------------------------------------- |
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93 // CIHLBitmapProcessor::Process |
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94 // ----------------------------------------------------------------------------- |
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95 TInt CIHLBitmapProcessor::Process( TRequestStatus& aStatus, |
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96 const MIHLBitmap& aSrcBitmap, |
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97 const TRect& aSrcRect, |
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98 MIHLBitmap& aDstBitmap, |
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99 const TRect& aDstRect ) |
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100 { |
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101 if( IsBusy() ) |
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102 { |
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103 return KErrNotReady; |
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104 } |
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105 |
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106 // Check bitmaps (no checking of masks is needed) |
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107 const CFbsBitmap& srcBitmap = aSrcBitmap.Bitmap(); |
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108 const CFbsBitmap& dstBitmap = aDstBitmap.Bitmap(); |
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109 if( !srcBitmap.Handle() || |
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110 !iScaler->IsValidRect( srcBitmap.SizeInPixels(), aSrcRect ) || |
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111 !dstBitmap.Handle() || |
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112 !iScaler->IsValidRect( dstBitmap.SizeInPixels(), aDstRect ) ) |
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113 { |
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114 return KErrArgument; |
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115 } |
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116 |
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117 IHL_DEBUG1( KIHLDebug, "IHL - CIHLBitmapProcessor - Start asynchronous bitmap processing" ); |
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118 |
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119 // Set references to member data |
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120 iSrcBitmap = &aSrcBitmap; |
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121 iSrcRect = aSrcRect; |
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122 iDstBitmap = static_cast<CIHLBitmap*>( &aDstBitmap ); //lint !e826 |
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123 iDstRect = aDstRect; |
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124 |
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125 // Start processing |
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126 iProcessorStatus = &aStatus; |
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127 *iProcessorStatus = KRequestPending; |
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128 |
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129 iProcessorState = EProcessBitmap; |
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130 SelfComplete(); |
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131 return KErrNone; |
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132 } |
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133 |
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134 // ----------------------------------------------------------------------------- |
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135 // CIHLBitmapProcessor::IsBusy |
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136 // ----------------------------------------------------------------------------- |
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137 TBool CIHLBitmapProcessor::IsBusy() const |
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138 { |
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139 return ( iProcessorState != EInactive ); |
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140 } |
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141 |
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142 // ----------------------------------------------------------------------------- |
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143 // CIHLBitmapProcessor::CancelProcess |
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144 // ----------------------------------------------------------------------------- |
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145 void CIHLBitmapProcessor::CancelProcess() |
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146 { |
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147 IHL_DEBUG1( KIHLDebug, "IHL - CIHLBitmapProcessor - Process cancelled" ); |
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148 |
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149 Cancel(); |
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150 } |
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151 |
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152 // ----------------------------------------------------------------------------- |
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153 // CIHLBitmapProcessor::SetFilter |
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154 // ----------------------------------------------------------------------------- |
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155 void CIHLBitmapProcessor::SetFilter( MIHFilter* /*aFilter*/ ) |
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156 { |
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157 // Not in use |
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158 } |
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159 |
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160 // ----------------------------------------------------------------------------- |
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161 // CIHLBitmapProcessor::DoCancel |
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162 // ----------------------------------------------------------------------------- |
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163 void CIHLBitmapProcessor::DoCancel() |
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164 { |
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165 iScaler->CancelProcess(); |
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166 iProcessorState = EInactive; |
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167 RequestComplete( KErrCancel ); |
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168 } |
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169 |
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170 // ----------------------------------------------------------------------------- |
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171 // CIHLBitmapProcessor::RunL |
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172 // ----------------------------------------------------------------------------- |
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173 void CIHLBitmapProcessor::RunL() |
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174 { |
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175 User::LeaveIfError( iStatus.Int() ); |
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176 |
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177 switch( iProcessorState ) |
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178 { |
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179 case EProcessBitmap: |
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180 { |
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181 ProcessBitmapL(); |
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182 if( iDstBitmap->Mask().Handle() ) |
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183 { |
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184 iProcessorState = EProcessMask; |
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185 } |
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186 else |
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187 { |
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188 // Destination has no mask -> finish process |
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189 iProcessorState = EFinish; |
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190 } |
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191 break; |
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192 } |
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193 case EProcessMask: |
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194 { |
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195 ProcessMaskL(); |
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196 iProcessorState = EFinish; |
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197 break; |
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198 } |
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199 case EFinish: |
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200 { |
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201 IHL_DEBUG1( KIHLDebug, "IHL - CIHLBitmapProcessor - Process complete!" ); |
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202 |
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203 iProcessorState = EInactive; |
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204 RequestComplete( KErrNone ); |
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205 break; |
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206 } |
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207 default: |
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208 { |
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209 Panic( KErrTotalLossOfPrecision ); |
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210 } |
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211 } |
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212 } |
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213 |
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214 // ----------------------------------------------------------------------------- |
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215 // CIHLBitmapProcessor::RunError |
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216 // ----------------------------------------------------------------------------- |
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217 TInt CIHLBitmapProcessor::RunError( TInt aError ) |
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218 { |
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219 IHL_DEBUG2( KIHLDebug, "IHL - CIHLBitmapProcessor - Processing error: %d", aError ); |
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220 |
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221 iProcessorState = EInactive; |
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222 RequestComplete( aError ); |
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223 return KErrNone; |
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224 } |
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225 |
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226 // ----------------------------------------------------------------------------- |
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227 // CIHLBitmapProcessor::ProcessBitmapL |
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228 // ----------------------------------------------------------------------------- |
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229 void CIHLBitmapProcessor::ProcessBitmapL() |
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230 { |
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231 User::LeaveIfError( iScaler->Scale( iStatus, |
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232 iSrcBitmap->Bitmap(), |
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233 iSrcRect, |
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234 iDstBitmap->BitmapModifyable(), |
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235 iDstRect ) ); |
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236 SetActive(); |
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237 } |
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238 |
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239 // ----------------------------------------------------------------------------- |
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240 // CIHLBitmapProcessor::ProcessMaskL |
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241 // ----------------------------------------------------------------------------- |
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242 void CIHLBitmapProcessor::ProcessMaskL() |
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243 { |
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244 if( iSrcBitmap->Mask().Handle() ) |
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245 { |
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246 User::LeaveIfError( iScaler->Scale( iStatus, |
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247 iSrcBitmap->Mask(), |
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248 iSrcRect, |
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249 iDstBitmap->MaskModifyable(), |
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250 iDstRect ) ); |
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251 SetActive(); |
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252 } |
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253 else |
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254 { |
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255 // No source bitmap where mask can be copied |
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256 // -> clear destination mask at given rectangle |
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257 CFbsBitGc* bitGc; |
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258 CFbsBitmapDevice* bitDev = CFbsBitmapDevice::NewL( |
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259 &(iDstBitmap->BitmapModifyable()) ); |
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260 CleanupStack::PushL( bitDev ); |
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261 User::LeaveIfError( bitDev->CreateContext( bitGc ) ); |
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262 CleanupStack::PushL( bitGc ); |
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263 |
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264 bitGc->SetPenColor( KRgbWhite ); // white is non-transparent |
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265 bitGc->SetBrushColor( KRgbWhite ); |
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266 bitGc->SetBrushStyle( CGraphicsContext::ESolidBrush ); |
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267 bitGc->DrawRect( iDstRect ); |
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268 |
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269 CleanupStack::PopAndDestroy( 2 ); // bitGc, bitDev |
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270 } |
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271 } |
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272 |
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273 // ----------------------------------------------------------------------------- |
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274 // CIHLBitmapProcessor::SelfComplete |
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275 // ----------------------------------------------------------------------------- |
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276 void CIHLBitmapProcessor::SelfComplete() |
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277 { |
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278 SetActive(); |
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279 iStatus = KRequestPending; |
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280 TRequestStatus* status = &iStatus; |
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281 User::RequestComplete( status, KErrNone ); |
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282 } |
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283 |
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284 // ----------------------------------------------------------------------------- |
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285 // CIHLBitmapProcessor::RequestComplete |
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286 // ----------------------------------------------------------------------------- |
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287 void CIHLBitmapProcessor::RequestComplete( TInt aReason ) |
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288 { |
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289 ASSERT( iProcessorStatus ); |
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290 User::RequestComplete( iProcessorStatus, aReason ); |
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291 } |
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292 |
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293 // End of File |
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