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1 /* |
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2 * Copyright (c) 2009 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: ?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 #ifndef GLXBASESTATE_H |
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21 #define GLXBASESTATE_H |
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22 |
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23 #include <QObject> |
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24 #include <glxviewids.h> |
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25 #include <glxuistd.h> |
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26 |
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27 typedef enum |
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28 { |
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29 NO_DIR, |
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30 FORWARD_DIR, |
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31 BACKWARD_DIR, |
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32 }NavigationDir; |
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33 |
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34 class GlxState : public QObject |
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35 { |
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36 Q_OBJECT |
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37 |
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38 public : |
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39 /* |
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40 * Constructor |
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41 * id = state id, state is and view id should be same |
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42 * preState = previous state pointer. It value will be null, if it is only one state in the stack |
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43 */ |
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44 GlxState(qint32 id, GlxState *preState); |
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45 virtual ~GlxState(); |
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46 /* |
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47 * It compare the states. |
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48 * ToDo: It is not used any where so may be removed later |
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49 */ |
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50 bool compare (qint32 id) const; |
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51 /* |
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52 * Return the state id of the function |
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53 */ |
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54 qint32 id() const { return mId; } |
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55 /* |
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56 * Retrun the pointer of the the previous state |
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57 */ |
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58 GlxState * previousState( ) const { return mPreState; } |
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59 /* |
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60 * Pure virtual function. It is default event handler of the state |
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61 */ |
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62 virtual void eventHandler(qint32 &id) = 0; |
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63 /* |
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64 * This funtion use for set the internal state of a state |
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65 * default implementation |
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66 */ |
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67 virtual void setState(int internalState) {Q_UNUSED( internalState )} |
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68 /* |
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69 * This funtion return the internal state of a state |
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70 * default implementation |
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71 */ |
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72 virtual int state( ) const { return 0; } |
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73 /* |
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74 * This function set the view transtion effect parameter. |
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75 * These values is use for run the animation for vies transtion |
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76 * In the case of forward direction it should call with the next state and in the case of back ward direction |
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77 * it should call with the current state |
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78 * effect = View transtion id |
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79 * viewEffect = to play the animation on which views |
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80 */ |
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81 virtual void setTranstionParameter(NavigationDir dir, GlxEffect &effect, GlxViewEffect &viewEffect); |
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82 |
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83 private: |
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84 const qint32 mId; |
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85 GlxState *mPreState; //contain the pointer of previous state |
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86 }; |
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87 |
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88 |
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89 |
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90 #endif /* GLXBASESTATE_H */ |