1 /*

     2 * Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies). 

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:   

    15 *

    16 */

    17 

    18 

    19 

    20 #ifndef HUIFXTIMELINE_H_

    21 #define HUIFXTIMELINE_H_

    22 

    23 enum THuiFxLoopingMode

    24     {

    25     ELoopingModeNone,

    26     ELoopingModeRepeat,

    27     };

    28 

    29 enum THuiFxInterpolationMode

    30     {

    31     EInterpolationModeHold,

    32     EInterpolationModeLinear,

    33     EInterpolationModeQuadraticBezier,

    34     EInterpolationModeCubicBezier,

    35     EInterpolationModeInQuad,

    36     EInterpolationModeOutQuad,

    37     EInterpolationModeInOutQuad,

    38     EInterpolationModeOutInQuad,

    39     EInterpolationModeInBack,

    40     EInterpolationModeOutBack,

    41     EInterpolationModeInOutBack,

    42     EInterpolationModeOutInBack,

    43 /*    

    44     EInterpolationModeDecelerate,

    45     EInterpolationModeAccelerate,

    46     EInterpolationModeImpulse,

    47     EInterpolationModeSineWave

    48 */    

    49     };

    50 

    51 template <typename TYPE, typename FPTYPE>

    52 class RHuiFxTimeLine

    53     {

    54 public:

    55     RHuiFxTimeLine();

    56     ~RHuiFxTimeLine();

    57 

    58     // TODO: tangent control, ease in/out

    59     void AppendKeyFrameL(TReal32 aTime, TYPE aValue);

    60     void AppendKeyFrameL(TReal32 aTime, TYPE aValue, TYPE aAuxValue1);

    61     void AppendKeyFrameL(TReal32 aTime, TYPE aValue, TYPE aAuxValue1, TYPE aAuxValue2);

    62      void SetLoopStart(TReal32 aTime);

    63     TReal32 LoopStart() const;

    64     void SetLoopEnd(TReal32 aTime);

    65     TReal32 LoopEnd() const;

    66     TReal32 Duration() const;

    67     void SetDuration(TReal32 aDuration);

    68     void SetInterpolationMode(THuiFxInterpolationMode aMode);

    69     THuiFxInterpolationMode InterpolationMode() const;

    70     void SetLoopingMode(THuiFxLoopingMode aMode);

    71     THuiFxLoopingMode LoopingMode() const;

    72     TYPE ValueAt(TReal32 aTime);

    73     

    74     RHuiFxTimeLine* CloneL();

    75 protected:

    76     FPTYPE ToFixedPoint(const TYPE& aValue);

    77     TYPE FromFixedPoint(const FPTYPE& aValue);

    78     FPTYPE Blend(const FPTYPE& aValue1, const FPTYPE& aValue2, TInt32 aAlpha);

    79     FPTYPE WeightedSum4(const FPTYPE& aValue1, const FPTYPE& aValue2, const FPTYPE& aValue3, const FPTYPE& aValue4,

    80                         TInt32 aWeight1, TInt32 aWeight2, TInt32 aWeight3, TInt32 aWeight4);

    81     TReal32 LocalTime(TReal32 aTime) const;

    82 

    83 private:

    84     // Not implemented

    85     RHuiFxTimeLine(const RHuiFxTimeLine& aTimeLine);

    86     RHuiFxTimeLine& operator=(const RHuiFxTimeLine& aTimeLine);

    87     

    88 private:

    89     class TKeyFrame

    90         {

    91     public:

    92         /** Time */

    93         TReal32             iTime;

    94         

    95         /** Fixed point time */

    96         TInt32              iFpTime;

    97         

    98         /** Value */

    99         TYPE                iValue;

   100 

   101         /** Fixed point value */

   102         FPTYPE              iFpValue;

   103         

   104         /** Auxiliary values for bezier interpolation */

   105         TYPE                iAuxValue[2];

   106         FPTYPE              iFpAuxValue[2];

   107         };

   108     

   109     typedef RArray<TKeyFrame> TKeyFrames;

   110 

   111     TReal32                 iTime;

   112     TReal32                 iDuration;

   113     TKeyFrames              iKeyFrames;

   114     TInt                    iLastIndex;

   115     TReal32                 iLoopStart;

   116     TReal32                 iLoopEnd;

   117     THuiFxLoopingMode       iLoopingMode;

   118     THuiFxInterpolationMode iInterpolationMode;

   119     };

   120 

   121 #include "HuiFxTimeLine.inl"

   122 

   123 #endif /*HUIFXTIMELINE_H_*/