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1 /* |
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2 * Copyright (c) 2005 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 the License "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * |
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16 */ |
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17 |
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18 |
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19 |
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20 // INCLUDE FILES |
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21 |
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22 #include "minimapscaler.h" |
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23 |
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24 #include <fbs.h> |
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25 #include <BitmapTransforms.h> |
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26 |
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27 // EXTERNAL DATA STRUCTURES |
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28 |
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29 // EXTERNAL FUNCTION PROTOTYPES |
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30 |
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31 // CONSTANTS |
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32 |
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33 // MACROS |
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34 |
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35 // LOCAL CONSTANTS AND MACROS |
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36 |
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37 // MODULE DATA STRUCTURES |
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38 |
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39 // LOCAL FUNCTION PROTOTYPES |
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40 |
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41 // FORWARD DECLARATIONS |
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42 |
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43 // ============================= LOCAL FUNCTIONS =============================== |
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44 |
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45 |
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46 // ============================ MEMBER FUNCTIONS =============================== |
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47 |
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48 // ----------------------------------------------------------------------------- |
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49 // CMinimapScaler::CMinimapScaler |
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50 // C++ default constructor can NOT contain any code, that |
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51 // might leave. |
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52 // ----------------------------------------------------------------------------- |
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53 // |
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54 CMinimapScaler::CMinimapScaler(MMinimapScalerCallback& aCallback) |
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55 : CActive(CActive::EPriorityIdle-1), iCallback(&aCallback) |
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56 { |
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57 CActiveScheduler::Add(this); |
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58 } |
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59 |
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60 // ----------------------------------------------------------------------------- |
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61 // CMinimapScaler::ConstructL |
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62 // Symbian 2nd phase constructor can leave. |
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63 // ----------------------------------------------------------------------------- |
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64 // |
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65 void CMinimapScaler::ConstructL() |
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66 { |
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67 iScaler = CBitmapScaler::NewL(); |
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68 } |
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69 |
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70 // ----------------------------------------------------------------------------- |
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71 // CMinimapScaler::NewL |
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72 // Two-phased constructor. |
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73 // ----------------------------------------------------------------------------- |
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74 // |
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75 CMinimapScaler* CMinimapScaler::NewL(MMinimapScalerCallback& aCallback) |
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76 { |
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77 CMinimapScaler* self = new( ELeave ) CMinimapScaler(aCallback); |
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78 |
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79 CleanupStack::PushL( self ); |
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80 self->ConstructL(); |
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81 CleanupStack::Pop(); |
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82 |
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83 return self; |
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84 } |
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85 |
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86 |
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87 // Destructor |
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88 CMinimapScaler::~CMinimapScaler() |
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89 { |
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90 Cancel(); |
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91 delete iScaler; |
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92 delete iResultBitmap; |
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93 } |
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94 |
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95 |
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96 // ----------------------------------------------------------------------------- |
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97 // CMinimapScaler::StartScalingL |
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98 // |
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99 // |
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100 // ----------------------------------------------------------------------------- |
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101 // |
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102 void CMinimapScaler::StartScalingL(CFbsBitmap& aSource, const TRect& aTargetRect) |
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103 { |
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104 // cancel outstanding request |
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105 Cancel(); |
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106 |
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107 if (!iResultBitmap || iResultBitmap->SizeInPixels() != aTargetRect.Size()) |
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108 { |
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109 DeleteResultBitmap(); |
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110 // create target bitmap |
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111 iResultBitmap = new (ELeave) CFbsBitmap(); |
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112 User::LeaveIfError(iResultBitmap->Create(aTargetRect.Size(),aSource.DisplayMode())); |
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113 } |
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114 // start scaling, async |
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115 iTargetRect = aTargetRect; |
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116 iScaler->Scale(&iStatus, aSource, *iResultBitmap, EFalse); |
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117 |
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118 SetActive(); |
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119 } |
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120 |
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121 |
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122 // ----------------------------------------------------------------------------- |
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123 // CMinimap::DeleteResultBitmap |
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124 // |
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125 // |
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126 // ----------------------------------------------------------------------------- |
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127 // |
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128 void CMinimapScaler::DeleteResultBitmap() |
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129 { |
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130 delete iResultBitmap; |
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131 iResultBitmap = 0; |
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132 } |
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133 |
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134 |
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135 // ----------------------------------------------------------------------------- |
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136 // CMinimap::DoCancel |
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137 // |
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138 // |
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139 // ----------------------------------------------------------------------------- |
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140 // |
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141 void CMinimapScaler::DoCancel() |
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142 { |
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143 iScaler->Cancel(); |
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144 DeleteResultBitmap(); |
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145 } |
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146 |
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147 |
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148 // ----------------------------------------------------------------------------- |
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149 // CMinimap::RunL |
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150 // |
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151 // |
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152 // ----------------------------------------------------------------------------- |
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153 // |
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154 void CMinimapScaler::RunL() |
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155 { |
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156 iCallback->ScalingCompletedL(*iResultBitmap, iTargetRect); |
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157 // if the callback called StartScalingL(), we must not delete the bitmap |
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158 if (!IsActive()) |
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159 { |
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160 DeleteResultBitmap(); |
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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 // ========================== OTHER EXPORTED FUNCTIONS ========================= |
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166 |
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167 |
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168 // End of File |