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1 // Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 // All rights reserved. |
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3 // This component and the accompanying materials are made available |
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4 // under the terms of "Eclipse Public License v1.0" |
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5 // which accompanies this distribution, and is available |
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6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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7 // |
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8 // Initial Contributors: |
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9 // Nokia Corporation - initial contribution. |
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10 // |
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11 // Contributors: |
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12 // |
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13 // Description: |
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14 // This is the implementation of the GifScaler Library |
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15 // |
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16 // |
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17 |
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18 #ifndef __GIFSCALERBODY_H__ |
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19 #define __GIFSCALERBODY_H__ |
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20 |
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21 #include <e32base.h> |
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22 #include <fbs.h> |
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23 #include <bitmaptransforms.h> |
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24 |
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25 #include "gifscaler.h" // Required for enums. |
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26 |
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27 // Color quantizer class. |
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28 class CColorQuantizer; |
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29 |
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30 /** |
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31 * |
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32 * The private API for clients to call the GifScaler Library scaling and color quantization. |
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33 * @internalTechnology |
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34 * |
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35 */ |
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36 |
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37 /** |
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38 * |
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39 * Body of CGifScaler |
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40 * |
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41 * @internalTechnology |
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42 * |
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43 */ |
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44 |
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45 NONSHARABLE_CLASS( CGifScaler::CBody ): public CActive |
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46 { |
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47 friend class CGifScaler; |
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48 public: |
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49 // Current state. |
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50 enum TScaleState |
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51 { |
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52 EInactiveState, // Scaling is inactive. |
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53 EScalingState, // Scaling the image only. |
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54 EStartColorQuantization, // Starting the color quantization. |
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55 ECleanUpPending, // Scaling etc. complete, so start cleanup. |
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56 ECleanUpState, // Cleaning up. |
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57 EScalingComplete // All operations complete. |
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58 }; |
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59 |
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60 private: |
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61 static CBody* NewL(CFbsBitmap& aSource, CFbsBitmap* aSourceMask, CGifScaler::TOptions aOptions); |
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62 ~CBody(); |
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63 |
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64 void Scale(TRequestStatus* aStatus, CFbsBitmap& aDestination, CPalette& aPalette, TBool aMaintainAspectRatio); |
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65 void Scale(TRequestStatus* aStatus, CFbsBitmap& aDestination, CPalette& aPalette, TUint8 aTransparencyThreshold, TBool aMaintainAspectRatio); |
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66 |
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67 // From CActive |
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68 void RunL(); |
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69 TInt RunError(TInt aError); |
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70 void DoCancel(); |
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71 |
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72 // New fns. |
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73 CBody(CFbsBitmap& aSource, CFbsBitmap* aSourceMask, CGifScaler::TOptions aOptions); |
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74 void ConstructL(); |
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75 |
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76 // Cleanup fn. |
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77 // Used after scaling is complete. |
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78 void CleanUp(); |
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79 |
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80 // Complete scaling. |
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81 void RequestComplete(TInt aReason); |
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82 |
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83 // Complete current state. |
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84 void SelfComplete(TInt aReason); |
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85 |
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86 private: |
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87 // Source bitmap. (not owned) |
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88 CFbsBitmap& iSource; |
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89 |
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90 // Source bitmap mask. (not owned) |
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91 CFbsBitmap* iSourceMask; |
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92 |
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93 // Intermediate bitmap. (owned) |
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94 CFbsBitmap* iIntermediate; |
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95 |
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96 // Destination bitmap. (not owned) |
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97 CFbsBitmap* iDestination; |
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98 |
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99 // Destination mask bitmap. (owned) |
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100 CFbsBitmap* iDestinationMask; |
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101 |
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102 // Scaling and color quantization options. |
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103 CGifScaler::TOptions iOptions; |
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104 |
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105 // MaintainAspectRatio. |
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106 TBool iMaintainAspectRatio; |
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107 |
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108 // Bitmap scaler. (owned) |
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109 CBitmapScaler* iBitmapScaler; |
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110 |
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111 // Request status to signal when done. (not owned) |
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112 TRequestStatus* iRequestStatus; |
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113 |
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114 // Current state. |
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115 TScaleState iCurrentState; |
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116 |
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117 // Tranparency indices. |
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118 TUint8 iTransparencyIndex; |
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119 TUint8 iReplacementIndex; |
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120 TUint8 iTransparencyThreshold; |
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121 |
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122 // Color quantizer. (owned) |
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123 CColorQuantizer* iColorQuantizer; |
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124 |
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125 // Output palette. (not owned) |
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126 CPalette *iPalette; |
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127 }; |
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128 |
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129 #endif // __GIFSCALERBODY_H__ |
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130 |