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1 /* |
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2 * Copyright (c) 2006 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: Sub-session for transformation |
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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 #ifndef R_ALFTRANSFORMATIONSUBSESSION_H |
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21 #define R_ALFTRANSFORMATIONSUBSESSION_H |
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22 |
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23 #include <e32std.h> |
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24 #include "alfclient.h" |
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25 #include "alf/alftransformation.h" |
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26 |
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27 /** |
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28 * Sub-session for transformation |
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29 * |
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30 * @lib alfclient.lib |
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31 * @since S60 v3.2 |
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32 */ |
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33 NONSHARABLE_CLASS( RAlfTransformationSubSession ): public RSubSessionBase |
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34 { |
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35 |
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36 public: |
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37 |
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38 /** |
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39 * Open subsession for given session. |
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40 * |
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41 * @param aSession Used session. |
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42 * @return Error code. |
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43 */ |
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44 TInt Open( RAlfClient& aSession ); |
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45 |
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46 /** |
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47 * Closes the subsession. |
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48 */ |
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49 void Close(); |
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50 |
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51 /** |
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52 * Loads transformation identity matrix i.e. reset. |
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53 */ |
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54 void LoadIdentity(); |
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55 |
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56 /** |
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57 * 2D translation. |
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58 * |
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59 * @param aX X coordinate. |
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60 * @param aY Y coordinate. |
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61 */ |
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62 void Translate( TReal32 aX, TReal32 aY ); |
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63 |
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64 /** |
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65 * 2D rotation. |
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66 * |
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67 * @param aAngle Rotation angle. |
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68 */ |
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69 void Rotate( const TAlfTimedValue& aAngle ); |
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70 |
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71 /** |
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72 * Returns the number of transform steps in the transformation. |
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73 */ |
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74 TInt Count() const; |
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75 |
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76 /** |
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77 * Returns the number of non-identity transform steps in the transformation. |
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78 * Non-identity steps will result in the transformation having an effect |
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79 * on geometry. |
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80 */ |
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81 TInt NonIdentityCount() const; |
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82 |
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83 /** |
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84 * Returns a one of the transformation steps so that it |
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85 * can be modified and set with SetStep method. |
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86 * |
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87 * @param aIndex Index of the transformation step. |
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88 * |
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89 * @return Transformation step. |
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90 */ |
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91 CAlfTransformation::TTransform Step(TInt aIndex); |
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92 |
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93 /** |
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94 * Modifies a one of the transformation steps by replacing |
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95 * the existing step with a given step. |
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96 * |
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97 * @param aIndex Index of the transformation step to be replaced |
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98 * |
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99 * @return Transformation step. |
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100 */ |
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101 void ReplaceStep(TInt aIndex, CAlfTransformation::TTransform aTransformationStep); |
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102 |
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103 /** |
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104 * 3D rotation with timed values. |
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105 */ |
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106 void Rotate(const TAlfTimedValue& aAngle, |
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107 TReal32 aAxisX, TReal32 aAxisY, TReal32 aAxisZ); |
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108 |
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109 /** |
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110 * 2D translation with timed values. |
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111 */ |
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112 void Translate(const TAlfTimedValue& aX, const TAlfTimedValue& aY); |
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113 |
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114 /** |
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115 * 3D scaling with timed values. |
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116 */ |
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117 void Scale(const TAlfTimedValue& aX, const TAlfTimedValue& aY, |
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118 const TAlfTimedValue& aZ); |
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119 }; |
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120 |
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121 |
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122 #endif // R_ALFTRANSFORMATIONSUBSESSION_H |