1 /* |
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2 * Copyright (c) 2007 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: Utility class to rotate bitmaps* |
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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 |
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21 #ifndef __CamSyncRotatorAo_H |
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22 #define __CamSyncRotatorAo_H |
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23 |
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24 // INCLUDES |
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25 #include <bitmaptransforms.h> |
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26 |
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27 // CONSTANTS |
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28 |
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29 // MACROS |
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30 |
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31 // DATA TYPES |
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32 |
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33 // FUNCTION PROTOTYPES |
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34 |
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35 // FORWARD DECLARATIONS |
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36 |
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37 // CLASS DECLARATION |
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38 |
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39 class MBitmapRotationObserver |
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40 { |
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41 public: |
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42 /** |
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43 * Mixin interface to be implemented by any object wishing to receive |
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44 * notification of rotation complete events. |
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45 * @since 3.0 |
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46 * @param aErr KErrNone if successful, on error other Epoc codes possible |
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47 */ |
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48 virtual void RotationCompleteL( TInt aErr ) = 0 ; |
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49 }; |
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50 |
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51 |
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52 /** |
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53 * Utility class to help in the rotating of bitmaps (for post-capture snapshot) |
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54 * |
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55 * @since 3.0 |
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56 */ |
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57 class CCamSyncRotatorAo : public CActive |
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58 { |
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59 private: |
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60 // This structure stores the details of a rotation task. |
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61 // Used only internally, the bitmap is *not* owned by this |
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62 // class, and will be overwritten by the rotation operation. |
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63 class CRotateTask : public CBase |
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64 { |
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65 public: |
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66 // The source bitmap to be rotated (and overwritten) |
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67 CFbsBitmap* iBitmap; |
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68 |
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69 // The angle to rotate the bitmap by |
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70 CBitmapRotator::TRotationAngle iAngle; |
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71 }; |
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72 |
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73 public: // Constructors and destructor |
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74 |
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75 /** |
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76 * Two-phased constructor. |
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77 */ |
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78 static CCamSyncRotatorAo* NewL(MBitmapRotationObserver& aObserver); |
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79 |
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80 /** |
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81 * Destructor. |
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82 */ |
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83 virtual ~CCamSyncRotatorAo(); |
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84 |
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85 public: // New functions |
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86 /** |
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87 * Rotates the specified bitmap by the supplied angle. |
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88 * Note that the original bitmap will be overwritten |
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89 * @since 3.0 |
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90 * @param aBitmap The bitmap to rotate |
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91 * @param aRotation The angle to rotate the bitmap |
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92 */ |
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93 void RotateL( CFbsBitmap* aBitmap, CBitmapRotator::TRotationAngle aRotation ); |
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94 |
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95 public: // Functions from base classes |
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96 /** |
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97 * Called when a rotate operation has completed |
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98 * @since 3.0 |
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99 */ |
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100 void RunL(); |
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101 |
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102 |
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103 /** |
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104 * Called to cancel an outstanding operation (eg when class is being destroyed) |
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105 * @since 3.0 |
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106 */ |
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107 void DoCancel(); |
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108 |
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109 private: |
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110 |
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111 /** |
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112 * C++ default constructor. |
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113 * @since 3.0 |
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114 */ |
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115 CCamSyncRotatorAo(MBitmapRotationObserver& aObserver); |
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116 |
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117 /** |
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118 * By default Symbian 2nd phase constructor is private. |
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119 * @since 3.0 |
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120 */ |
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121 void ConstructL(); |
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122 |
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123 private: // Data |
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124 |
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125 // ICL utility class that actually does the bitmap rotation |
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126 CBitmapRotator* iRotator; |
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127 |
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128 MBitmapRotationObserver& iObserver; |
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129 }; |
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130 |
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131 #endif // __CamSyncRotatorAo_H |
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132 |
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133 // End of File |
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