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1 /* |
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2 * Copyright (c) 2008 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: Fast swap area utilities classes |
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15 * |
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16 */ |
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17 |
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18 #ifndef TSFASTSWAPAREAUTILS_H_ |
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19 #define TSFASTSWAPAREAUTILS_H_ |
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20 |
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21 #include <e32base.h> |
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22 |
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23 // Forwar class declarations |
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24 class CEikonEnv; |
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25 class TAknLayoutRect; |
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26 class CTsFastSwapTimer; |
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27 class CTsFastSwapArea; |
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28 class CTsFastSwapGrid; |
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29 class CTsFswEntry; |
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30 class CBitmapScaler; |
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31 class CTsFastSwapAreaExtension; |
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32 |
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33 |
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34 /** |
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35 * Interface for observing timer class. |
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36 */ |
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37 class MTsFastSwapTimerObserver |
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38 { |
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39 public: |
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40 /** |
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41 * Called when timer is completed |
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42 */ |
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43 virtual void TimerCompletedL( CTsFastSwapTimer* aSource ) = 0; |
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44 }; |
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45 |
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46 |
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47 |
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48 /** |
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49 * Timer class for handling timed events |
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50 */ |
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51 class CTsFastSwapTimer : public CTimer |
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52 { |
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53 public: |
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54 // Constructor |
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55 CTsFastSwapTimer( MTsFastSwapTimerObserver& aObserver ); |
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56 // Destructor |
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57 ~CTsFastSwapTimer(); |
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58 // 2nd phase constructor |
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59 void ConstructL(); |
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60 |
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61 private: // From CTimer |
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62 void RunL(); |
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63 |
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64 private: // Data |
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65 MTsFastSwapTimerObserver* iObserver; // not own |
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66 }; |
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67 |
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68 |
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69 |
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70 /** |
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71 * Asynchronous class for handling screenshots loading |
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72 * and rescaling to achieve better quality. |
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73 */ |
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74 class CTsBitmapScaleTask : public CActive |
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75 { |
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76 public: |
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77 CTsBitmapScaleTask( CTsFastSwapAreaExtension& aObserver ); |
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78 ~CTsBitmapScaleTask(); |
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79 void StartLD( CFbsBitmap* aSourceBitmap, |
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80 CFbsBitmap* aTargetBitmap ); |
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81 private: |
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82 void RunL(); |
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83 void DoCancel(); |
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84 private: |
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85 // Data |
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86 CTsFastSwapAreaExtension& iObserver; |
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87 CBitmapScaler* iScaler; // owned |
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88 CFbsBitmap* iSourceBmp; // owned |
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89 }; |
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90 |
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91 |
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92 |
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93 /** |
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94 * Utility class containg methods for fast swap area handling. |
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95 */ |
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96 class CTsFastSwapAreaExtension: public CBase |
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97 { |
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98 |
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99 public: |
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100 |
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101 /** |
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102 * Two-phase constructor. |
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103 * |
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104 * @param aRect Area where fast swap info & list should draw itself. |
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105 * @param aParent Parent CoeControl. |
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106 */ |
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107 static CTsFastSwapAreaExtension* NewL( CTsFastSwapArea& aFastSwapArea, |
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108 CEikonEnv& aEnv); |
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109 |
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110 /** |
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111 * @copydoc NewL |
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112 */ |
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113 static CTsFastSwapAreaExtension* NewLC( CTsFastSwapArea& aFastSwapArea, |
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114 CEikonEnv& aEnv ); |
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115 |
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116 /** |
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117 * Destructor. |
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118 */ |
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119 ~CTsFastSwapAreaExtension(); |
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120 |
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121 private: |
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122 |
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123 /** |
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124 * @copydoc NewL |
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125 */ |
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126 void ConstructL(); |
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127 |
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128 /** |
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129 * C++ constructor. |
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130 */ |
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131 CTsFastSwapAreaExtension( CTsFastSwapArea& aFastSwapArea, |
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132 CEikonEnv& aEnv ); |
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133 |
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134 public: |
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135 |
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136 /** |
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137 * Returns current screen orientation: |
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138 * |
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139 * @return 1 if landscape, 0 if portait |
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140 */ |
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141 TInt GetCurrentScreenOrientation(); |
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142 |
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143 /** |
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144 * Retrieves variety value, based on current screen resolution. |
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145 * |
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146 * @param aVariety result of the function, 0 value means portrait |
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147 * value of 1 indicates landscape |
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148 * @return ETrue if screen resolution differs from vale returned by |
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149 * layout meta data functions. |
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150 */ |
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151 TBool GetVariety( TInt& aVariety ); |
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152 |
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153 /** |
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154 * Returns rectangles for fast swap area controls |
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155 */ |
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156 void GetFastSwapAreaRects( RArray<TAknLayoutRect>& aRects ); |
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157 |
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158 /** |
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159 * Returns the position of the given item inside grid world rect. |
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160 * Returns point in the middle of the view rectangle. |
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161 * |
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162 * @param aItemIdx index of the item for which calculation will be done |
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163 */ |
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164 TPoint ItemViewPosition( TInt aItemIdx ); |
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165 |
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166 /** |
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167 * Returns index of the shown item, based on the logical |
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168 * position of the grids view. Item that is closest to the |
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169 * middle of screen is returned. |
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170 * |
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171 * @param aViewPos grids view position. This must be point in |
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172 * the middle of the view rectangle |
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173 * @return index of the item |
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174 */ |
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175 TInt ViewToVisibleItem( const TPoint aViewPos ); |
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176 |
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177 /** |
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178 * Launches increasing pop-up feedback. |
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179 */ |
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180 void LaunchPopupFeedback(); |
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181 |
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182 /** |
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183 * Retrieves and returns size for image graphics. |
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184 */ |
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185 TSize PreferredImageSize(); |
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186 |
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187 /** |
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188 * Calculates the correct size if aspect ratio needs to be preserved. |
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189 */ |
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190 TSize CalculateSizePreserveRatio(const TSize& aTargetAreaSize, |
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191 const TSize& aSourceSize); |
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192 |
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193 /** |
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194 * Makes a copy of the given bitmap. |
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195 * Also scaled to the given size, but maintains aspect ratio, |
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196 * so the size of the returned bitmap may be less then aSize. |
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197 */ |
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198 CFbsBitmap* CopyBitmapL( TInt aFbsHandle, TSize aSize, TBool aIsScreenshot ); |
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199 |
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200 /** |
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201 * Cancels ongoing scale tasks |
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202 */ |
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203 void CancelScaleTasks(); |
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204 |
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205 /** |
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206 * Callback for updating task list. |
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207 */ |
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208 void ScaleFinished( CTsBitmapScaleTask* iFinishedTask ); |
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209 |
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210 private: // Data |
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211 |
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212 CTsFastSwapArea& iFastSwapArea; |
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213 |
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214 CEikonEnv& iEnv; |
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215 |
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216 RPointerArray<CTsBitmapScaleTask> iScaleTasks; |
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217 |
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218 }; |
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219 |
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220 #endif /* TSFASTSWAPAREAUTILS_H_ */ |