mulwidgets/gesturehelper/src/gesture.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 17 Dec 2009 08:56:02 +0200
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/*
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* Copyright (c) 2008-2008 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  Gesture class
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*
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*/
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#include "gesture.h"
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#include <e32math.h>
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#include "gesturedefs.h"
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#include "utils.h"
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using namespace GestureHelper;
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/** 
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 * Point array for which only x axis is relevant
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 */
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class TXAxisPointArray : public TPointArray
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    {
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public:
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    TXAxisPointArray( const RArray< TPointEntry >& aPoints )
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            : TPointArray( aPoints ) {}
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    // from TPointArray
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    TPoint operator[]( TInt aIndex ) const 
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        {
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        return TPoint( Raw( aIndex ).iX, 0 );
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        }
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    };
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/** 
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 * Point array for which only y axis is relevant
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 */
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class TYAxisPointArray : public TPointArray
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    {
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public:
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    TYAxisPointArray( const RArray< TPointEntry >& aPoints )
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            : TPointArray( aPoints ) {}
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    // from TPointArray
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    TPoint operator[]( TInt aIndex ) const 
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        {
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        return TPoint( 0, Raw( aIndex ).iY );
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        }
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    };
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namespace 
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    {
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    /** @return the current time */
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    TTime CurrentTime()
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        {
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        TTime time;
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        time.UniversalTime();
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        return time;
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        }
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    /**
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     * @param aRelevantAxis See @ref MGestureEvent::Code
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     * @return gesture code by analysing the sequence of points
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     */
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    TGestureCode CodeFromPoints( const RArray< TPointEntry >& aPoints, 
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            MGestureEvent::TAxis aRelevantAxis ) 
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        {
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        // select the correct filter based on aRelevantAxis
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        // these filter_ objects are array decorators that will eliminate either 
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        // x, y or neither coordinate of each point
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        TXAxisPointArray filterY( aPoints );
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        TYAxisPointArray filterX( aPoints );
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        TPointArray filterNone( aPoints );
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        TPointArray& filter = 
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            aRelevantAxis == MGestureEvent::EAxisHorizontal ? static_cast< TPointArray& >( filterY ) : 
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            aRelevantAxis == MGestureEvent::EAxisVertical   ? static_cast< TPointArray& >( filterX ) :
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            /* otherwise EAxisBoth */                         filterNone;
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        // currently the gesture recogniser does not have any state, so it is fast
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        // to instantiate. The call is not static however, to allow the recogniser
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        // to be replaced by a more complicated implementation that has state.
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        // then it may make sense to make the recogniser a member variable.
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        return TGestureRecogniser().GestureCode( filter, aRelevantAxis );
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        }
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    /**
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     * @param aPoints Sequence of points representing 1st pointer movement
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     * @param aSecondaryPoints Sequence of points representing 2nd pointer movement
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     * @param aPreviousDistance contains the previous distance aftre this function execution 
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     * @return gesture code by analysing the sequence of points
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     */
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    TGestureCode MultiTouchCode( const RArray< TPointEntry >& aPoints, 
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            const RArray< TPointEntry >& aSecondaryPoints, TInt aPreviousDistance, TBool aIsFirstPinch ) 
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        {
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        TPointArray filter(aPoints);
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        TPointArray secondaryFilter(aSecondaryPoints);
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        return TGestureRecogniser().MultiTouchGestureCode( filter, secondaryFilter, aPreviousDistance, aIsFirstPinch );
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        }
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    } // unnamed namespace
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// ----------------------------------------------------------------------------
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// constructor
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// ----------------------------------------------------------------------------
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//
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CGesture::CGesture()
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    {
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    iPinchStartDistance = -1;
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    iPinchEndDistance = -1;
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    iPinchDetected = EFalse ; 
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    }
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// ----------------------------------------------------------------------------
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// destructor
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// ----------------------------------------------------------------------------
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//
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CGesture::~CGesture()
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    {
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    iPoints.Close();
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    iSecondaryPoints.Close();
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    }
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// ----------------------------------------------------------------------------
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// AsStartEventL
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// ----------------------------------------------------------------------------
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//
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CGesture* CGesture::AsStartEventLC() const
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    {
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    __ASSERT_DEBUG( 0 < iPoints.Count(), Panic( EGesturePanicIllegalLogic ) );
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    CGesture* gesture = new ( ELeave ) CGesture;
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    CleanupStack::PushL( gesture );
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    User::LeaveIfError( gesture->AddPoint( iPoints[0].iPos ) );
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    return gesture;
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    }
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// ----------------------------------------------------------------------------
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// ResetToLastPoint
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// ----------------------------------------------------------------------------
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//
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void CGesture::ResetToLastPoint(TBool aSetPointerZero,TBool aSetToZero)
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    {
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    TPointEntry lastEntry(TPoint(0,0),TTime());
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    if( aSetToZero )
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        {
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        __ASSERT_DEBUG( 0 < iPoints.Count(), Panic( EGesturePanicIllegalLogic ) );
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        lastEntry = LastPoint( iPoints);
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        }
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    else
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parents:
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   156
        {
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   157
        __ASSERT_DEBUG( 0 < iSecondaryPoints.Count(), Panic( EGesturePanicIllegalLogic ) );
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        lastEntry = LastPoint( iSecondaryPoints);
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   159
        }
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    Reset();
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   161
    if( aSetPointerZero )
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   162
        {
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        iPoints.Append(lastEntry);
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   164
        }
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   165
    else
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parents:
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   166
        {
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   167
        iSecondaryPoints.Append(lastEntry);  
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   168
        }     
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   169
    }
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// ----------------------------------------------------------------------------
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// LastPoint
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// ----------------------------------------------------------------------------
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//
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   175
inline const TPointEntry CGesture::LastPoint( const RArray< TPointEntry >& aPoints ) const
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    {
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    return aPoints[aPoints.Count() - 1];
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    }
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// ----------------------------------------------------------------------------
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   181
// IsPinchToleranceHigh
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// ----------------------------------------------------------------------------
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//
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   184
inline TBool CGesture::IsHighPinchTolerance() const
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   185
    {
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diff changeset
   186
  
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   187
    if( iPinchEndDistance == -1 )
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   188
        {
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   189
        return ETrue;
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   190
        }
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parents:
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   191
    else
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parents:
diff changeset
   192
        {
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   193
        TInt currentDistance = TGestureRecogniser().Length( LastPoint(iPoints).iPos, LastPoint(iSecondaryPoints).iPos );
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   194
        // if previously zooming out and current distance corresponds to zooming in or viceversa
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   195
        if( ( iZoomState == EZoomOut && currentDistance < iPinchStartDistance) || 
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   196
                ( iZoomState == EZoomIn && currentDistance > iPinchStartDistance))
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parents:
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   197
            {
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   198
            return ETrue;
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   199
            }
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   200
        }
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   201
    return EFalse;
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   202
    }
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   203
// ----------------------------------------------------------------------------
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// Reset
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   205
// ----------------------------------------------------------------------------
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   206
//
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   207
void CGesture::Reset()
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   208
    {
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   209
    iPoints.Reset();
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   210
    iSecondaryPoints.Reset();
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   211
    iHoldingState = ENotHolding;
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   212
    iState = ENotActive;
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   213
    iHoldingPointIndex = 0;
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   214
    iVisual = NULL;
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   215
    iIsDoubleTap = EFalse;
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   216
    iPinchStartDistance = -1;
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parents:
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   217
    iPinchEndDistance = -1;
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parents:
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   218
    iPinchDetected = EFalse;
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   219
    iZoomState = ENoZoom;
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   220
    }
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parents:
diff changeset
   221
    
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   222
// ----------------------------------------------------------------------------
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   223
// IsEmpty
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   224
// ----------------------------------------------------------------------------
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   225
//
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parents:
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   226
TBool CGesture::IsEmpty() const
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   227
    {
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   228
    return iPoints.Count() == 0;
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parents:
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   229
    }
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parents:
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   230
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   231
// ----------------------------------------------------------------------------
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   232
// IsMultiTouch
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   233
// ----------------------------------------------------------------------------
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   234
//
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parents:
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   235
TBool CGesture::IsMultiTouch() const
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   236
    {
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    return iSecondaryPoints.Count() == 0;
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    }
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// ----------------------------------------------------------------------------
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// Add a point to the sequence of points that together make up the gesture
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// ----------------------------------------------------------------------------
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//
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TInt CGesture::AddPoint( const TPoint& aPoint )
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    {
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    if ( !IsLatestPoint( aPoint ) )
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        {
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        return iPoints.Append( TPointEntry( aPoint, CurrentTime() ) );
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        }
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    return KErrNone;
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    }
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// ----------------------------------------------------------------------------
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// AddSecondaryPoint
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// ----------------------------------------------------------------------------
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//
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TInt CGesture::AddSecondaryPoint( const TPoint& aPoint )
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    {
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    if ( !IsLatestSecondaryPoint( aPoint ) )
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        {
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        return iSecondaryPoints.Append( TPointEntry( aPoint, CurrentTime() ) );
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        }
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    return KErrNone;
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    }
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// ----------------------------------------------------------------------------
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// SetVisual
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// ----------------------------------------------------------------------------
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//
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void CGesture::SetVisual( CAlfVisual* aVisual )
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    {
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    iVisual = aVisual;
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    }
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// ----------------------------------------------------------------------------
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// IsNearHoldingPoint
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// ----------------------------------------------------------------------------
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//
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TBool CGesture::IsNearHoldingPoint( const TPoint& aPoint ) const
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    {
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    return ToleranceRect( iPoints[ iHoldingPointIndex ].iPos ).Contains( aPoint );
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    }
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// ----------------------------------------------------------------------------
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// IsLatestPoint
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// ----------------------------------------------------------------------------
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//
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TBool CGesture::IsLatestPoint( const TPoint& aPoint ) const
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    {
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    if ( iPoints.Count() > 0 )
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   291
        {
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        return aPoint == CurrentPos();
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   293
        }
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    return EFalse;
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   295
    }
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// ----------------------------------------------------------------------------
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// IsLatestSecondaryPoint
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// ----------------------------------------------------------------------------
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//
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   300
TBool CGesture::IsLatestSecondaryPoint( const TPoint& aPoint ) const
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    {
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   302
    if ( iSecondaryPoints.Count() > 0 )
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parents:
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   303
        {
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        return aPoint == iSecondaryPoints[ iSecondaryPoints.Count() - 1 ].iPos;
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   305
        }
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   306
    return EFalse;
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   307
    }
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parents:
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   308
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// ----------------------------------------------------------------------------
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// StartHolding
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// ----------------------------------------------------------------------------
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//
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   313
void CGesture::StartHolding()
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    {
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    iHoldingState = EHoldStarting;
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   316
    
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   317
    // remove all points that were introduced after holding started
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   318
    for ( TInt i = iPoints.Count() - 1; i > iHoldingPointIndex; i-- )
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parents:
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   319
        {
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   320
        iPoints.Remove( i );
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diff changeset
   321
        }
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parents:
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   322
    }
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parents:
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   323
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   324
// ----------------------------------------------------------------------------
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// SetHoldingPoint
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   326
// ----------------------------------------------------------------------------
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   327
//
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   328
void CGesture::SetHoldingPoint()
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   329
    {
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   330
    iHoldingPointIndex = iPoints.Count() - 1;
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parents:
diff changeset
   331
    }
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parents:
diff changeset
   332
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parents:
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   333
// ----------------------------------------------------------------------------
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   334
// ContinueHolding
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   335
// ----------------------------------------------------------------------------
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parents:
diff changeset
   336
//
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parents:
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   337
void CGesture::ContinueHolding()
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   338
    {
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   339
    iHoldingState = EHolding;
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parents:
diff changeset
   340
    }
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parents:
diff changeset
   341
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parents:
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   342
// ----------------------------------------------------------------------------
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parents:
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   343
// SetSingleTouchActive
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   344
// ----------------------------------------------------------------------------
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   345
//
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parents:
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   346
void CGesture::SetSingleTouchActive()
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parents:
diff changeset
   347
    {
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   348
    __ASSERT_DEBUG( ENotActive == iState, Panic( EGesturePanicIllegalLogic ) );
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parents:
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   349
    iState = ESingleTouchActive;
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parents:
diff changeset
   350
    }
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parents:
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   351
// ----------------------------------------------------------------------------
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parents:
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   352
// SetMultiTouchActive
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parents:
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   353
// ----------------------------------------------------------------------------
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parents:
diff changeset
   354
//
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   355
void CGesture::SetMultiTouchActive()
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parents:
diff changeset
   356
    {
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parents:
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   357
    iState = EMultiTouchActive;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   358
    iIsMultiTouched = ETrue;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   359
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   360
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   361
// SetSingleTouchReleased
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   362
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   363
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   364
void CGesture::SetSingleTouchReleased()
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   365
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   366
    // IsMovementStopped expects corresponding SetComplete to be called before SetRelease
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   367
    __ASSERT_DEBUG( ESingleTouchComplete == iState, Panic( EGesturePanicIllegalLogic ) );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   368
    iState = ESingleTouchReleased;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   369
    iIsMultiTouched = EFalse;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   370
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   371
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   372
// SetMultiTouchReleased
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   373
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   374
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   375
void CGesture::SetMultiTouchReleased()
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   376
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   377
    // IsMovementStopped expects corresponding SetComplete to be called before SetRelease
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   378
    __ASSERT_DEBUG( EMultiTouchComplete == iState, Panic( EGesturePanicIllegalLogic ) );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   379
    iState = EMultiTouchReleased;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   380
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   381
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   382
/**
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   383
 * @return elapsed time between aStartTime and aEndTime
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   384
 */
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   385
inline TTimeIntervalMicroSeconds32 Elapsed( const TTime& aStartTime, 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   386
                                            const TTime& aEndTime )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   387
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   388
    return aEndTime.MicroSecondsFrom( aStartTime ).Int64();
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   389
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   390
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   391
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   392
// SetSingleTouchComplete
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   393
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   394
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   395
void CGesture::SetSingleTouchComplete()
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   396
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   397
    __ASSERT_DEBUG( iPoints.Count() > 0, Panic( EGesturePanicIllegalLogic ) );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   398
    iState = ESingleTouchComplete;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   399
    iCompletionTime = CurrentTime();
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   400
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   401
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   402
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   403
// SetMultiTouchComplete
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   404
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   405
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   406
void CGesture::SetMultiTouchComplete()
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   407
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   408
    __ASSERT_DEBUG( iSecondaryPoints.Count() > 0, Panic( EGesturePanicIllegalLogic ) );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   409
    iState = EMultiTouchComplete;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   410
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   411
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   412
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   413
// SetCancelled
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   414
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   415
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   416
void CGesture::SetCancelled()
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   417
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   418
    iState = ECancelled;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   419
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   420
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   421
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   422
// SetDoubleTap
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   423
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   424
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   425
void CGesture::SetDoubleTap() 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   426
    { 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   427
    iIsDoubleTap = ETrue; 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   428
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   429
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   430
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   431
// IsTap
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   432
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   433
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   434
TBool CGesture::IsTap() const
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   435
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   436
    if(iIsMultiTouched)
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   437
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   438
        return EFalse;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   439
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   440
    return CodeFromPoints( iPoints, EAxisBoth ) == EGestureTap;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   441
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   442
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   443
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   444
// IsPinch
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   445
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   446
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   447
TBool CGesture::IsPinch()
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   448
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   449
    if (iPinchStartDistance  == -1 )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   450
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   451
        iPinchStartDistance = TGestureRecogniser().Length( iPoints[0].iPos, iSecondaryPoints[0].iPos ) ;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   452
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   453
    // if there is a pinch detected in the last attempt then update the start distance.
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   454
    // henceforth this new distance is used as reference for calculating the pinch.
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   455
    
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   456
    if( iPinchDetected )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   457
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   458
        iPinchStartDistance = iPinchEndDistance;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   459
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   460
    iPinchDetected = MultiTouchCode( iPoints, iSecondaryPoints, iPinchStartDistance,IsHighPinchTolerance()) == EGesturePinch;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   461
    if( iPinchDetected )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   462
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   463
        // This end distance is updated the first time the pinch is detected.
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   464
        // This is done the save the value of pinch end distnce for further refernce to
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   465
        // update the pinch start distance next time any pointer position changes.
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   466
        iPinchEndDistance = TGestureRecogniser().Length( 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   467
                LastPoint(iPoints).iPos,LastPoint(iSecondaryPoints).iPos );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   468
        iZoomState = iPinchEndDistance > iPinchStartDistance ? EZoomOut : EZoomIn;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   469
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   470
    return iPinchDetected;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   471
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   472
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   473
/**
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   474
 * Translates a non-holding code into a holding code
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   475
 * @param aCode original gesture code
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   476
 * @return a gesture code with hold flag applied
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   477
 */
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   478
inline TGestureCode Hold( TGestureCode aCode )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   479
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   480
    if ( aCode != EGestureStart && 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   481
         aCode != EGestureDrag && 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   482
         aCode != EGestureReleased && 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   483
         aCode != EGestureUnknown )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   484
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   485
        return static_cast< TGestureCode >( aCode | EFlagHold );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   486
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   487
    return aCode;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   488
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   489
    
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   490
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   491
// Code
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   492
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   493
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   494
TGestureCode CGesture::Code( TAxis aRelevantAxis ) const
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   495
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   496
    switch ( iState )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   497
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   498
        case ESingleTouchActive:           
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   499
            // "start" event if only first point received
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   500
            // need to check that not holding, in case user pressed stylus
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   501
            // down, and activated holding without moving the stylus
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   502
            if ( iPoints.Count() == 1 && !IsHolding() )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   503
                {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   504
                return EGestureStart;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   505
                }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   506
            // "drag" event if holding not started or holding started earlier
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   507
            else if ( iHoldingState != EHoldStarting )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   508
                {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   509
                // select the correct filter based on aRelevantAxis
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   510
                // these filter_ objects are array decorators that will eliminate either 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   511
                // x, y or neither coordinate of each point
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   512
                TXAxisPointArray filterY( iPoints );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   513
                TYAxisPointArray filterX( iPoints );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   514
                TPointArray filterNone( iPoints );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   515
                TPointArray& filter = 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   516
                    aRelevantAxis == MGestureEvent::EAxisHorizontal ? static_cast< TPointArray& >( filterY ) : 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   517
                    aRelevantAxis == MGestureEvent::EAxisVertical   ? static_cast< TPointArray& >( filterX ) :
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   518
                    /* otherwise EAxisBoth */                         filterNone;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   519
            
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   520
                return TGestureRecogniser().ValidateDrag( filter, aRelevantAxis );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   521
                }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   522
            // holding was just started
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   523
            else 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   524
                {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   525
                return Hold( CodeFromPoints( iPoints, aRelevantAxis ) );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   526
                }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   527
            
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   528
        case EMultiTouchActive:
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   529
            // Only if there are some points in secondary array
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   530
            if ( iSecondaryPoints.Count() == 1 && iPoints.Count() == 1 )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   531
                {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   532
                return EGestureMultiTouchStart;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   533
                }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   534
            else
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   535
                {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   536
                return MultiTouchCode( iPoints, iSecondaryPoints,  iPinchStartDistance,IsHighPinchTolerance() );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   537
                }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   538
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   539
        case ESingleTouchComplete:
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   540
			{
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   541
            if ( iIsDoubleTap )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   542
                {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   543
                return EGestureDoubleTap;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   544
                }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   545
            
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   546
            // If there was a mulitouch within the last gesture then ignore the tap
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   547
			TGestureCode gestureCode = CodeFromPoints( iPoints, aRelevantAxis );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   548
            if( gestureCode == EGestureTap && iIsMultiTouched)
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   549
                {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   550
                return EGestureUnknown;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   551
                }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   552
            return gestureCode;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   553
            }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   554
        case EMultiTouchComplete:
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   555
            return MultiTouchCode( iPoints, iSecondaryPoints, iPinchStartDistance,IsHighPinchTolerance());
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   556
            
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   557
        case ESingleTouchReleased:
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   558
            return EGestureReleased;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   559
        case EMultiTouchReleased:
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   560
            return EGestureMultiTouchReleased;         
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   561
            
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   562
        case ECancelled: // fallthrough
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   563
        case ENotActive:
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   564
        default: 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   565
            return EGestureUnknown;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   566
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   567
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   568
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   569
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   570
// IsHolding
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   571
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   572
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   573
TBool CGesture::IsHolding() const
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   574
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   575
    return iHoldingState >= EHoldStarting;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   576
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   577
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   578
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   579
// StartPos
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   580
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   581
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   582
TPoint CGesture::StartPos() const
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   583
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   584
    // at least one point will be in the array during callback (pointer down pos)
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   585
    return iPoints[ 0 ].iPos;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   586
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   587
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   588
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   589
// CurrentPos
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   590
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   591
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   592
TPoint CGesture::CurrentPos() const
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   593
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   594
    // at least on point will be in the array during callback (pointer down pos)
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   595
    return iPoints[ iPoints.Count() - 1 ].iPos;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   596
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   597
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   598
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   599
// IsMovementStopped
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   600
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   601
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   602
inline TBool CGesture::IsMovementStopped() const
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   603
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   604
    // iCompletionTime is only only valid if client has called SetComplete 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   605
    if ( iState >= ESingleTouchComplete )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   606
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   607
        return Elapsed( NthLastEntry( 1 ).iTime, iCompletionTime ).Int() > KSpeedStopTime;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   608
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   609
    return EFalse;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   610
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   611
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   612
namespace 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   613
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   614
    const TInt KFloatingPointAccuracy = 0.000001;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   615
    
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   616
    /** @return percentage (0.0-1.0) how far aPos is from aEdge1 towards aEdge2 */
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   617
    inline TReal32 Proportion( TReal32 aPos, TReal32 aEdge1, TReal32 aEdge2 )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   618
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   619
        if ( Abs( aEdge2 - aEdge1 ) > KFloatingPointAccuracy )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   620
            {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   621
            return ( aPos - aEdge1 ) / ( aEdge2 - aEdge1 );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   622
            }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   623
        return 0; // avoid division by zero 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   624
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   625
    
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   626
    /** Edges (pixels) at which speed should be -100% or 100% */
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   627
    NONSHARABLE_STRUCT( TEdges )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   628
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   629
        TReal32 iMin;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   630
        TReal32 iMax;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   631
        };
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   632
        
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   633
    /** 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   634
     * scale which allows different (coordinate -> percentage) mapping
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   635
     * between -100% to 0% and 0 and 100%
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   636
     */
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   637
    NONSHARABLE_STRUCT( TScale )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   638
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   639
        TScale( TInt aZero, const TEdges& aEdges )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   640
                : iMin( aEdges.iMin ), iZero( aZero ), iMax( aEdges.iMax )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   641
            {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   642
            }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   643
        
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   644
        /** @return aPos as a percentage between -100% and 100% in aScale */
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   645
        TReal32 Percent( TReal32 aPos ) const;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   646
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   647
        /// coordinate where speed is -100%
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   648
        TReal32 iMin;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   649
        /// coordinate where speed is 0%
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   650
        TReal32 iZero;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   651
        /// coordinate where speed is 100%
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   652
        TReal32 iMax;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   653
        };
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   654
        
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   655
    /** @convert aPos into a percentage between -100% and 100% in aScale */
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   656
    TReal32 TScale::Percent( TReal32 aPos ) const
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   657
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   658
        TReal32 percent;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   659
        if ( aPos < iZero )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   660
            {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   661
            // return negative percentages on the lower side of zero point
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   662
            percent = -1 * Proportion( aPos, iZero, iMin );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   663
            }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   664
        else 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   665
            {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   666
            percent = Proportion( aPos, iZero, iMax );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   667
            }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   668
        // constrain between -100% and 100%
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   669
        return Min( Max( percent, -1.0F ), 1.0F );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   670
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   671
    
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   672
    /** Scale in x and y dimensions */
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   673
    NONSHARABLE_STRUCT( TScale2D )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   674
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   675
        TRealPoint Percent( const TPoint& aPos ) const
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   676
            {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   677
            return TRealPoint( iX.Percent( aPos.iX ),
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   678
                               iY.Percent( aPos.iY ) );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   679
            }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   680
                
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   681
        TScale iX;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   682
        TScale iY;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   683
        };
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   684
            
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   685
    enum TDirection { ESmaller, ELarger };
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   686
    
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   687
    /** @return the direction of pos compared to the previous pos */
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   688
    inline TDirection Direction( TInt aPos, TInt aPreviousPos )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   689
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   690
        return aPos < aPreviousPos ? ESmaller : ELarger;    
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   691
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   692
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   693
    /** Direction in x and y dimensions */
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   694
    NONSHARABLE_STRUCT( TDirection2D )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   695
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   696
        TDirection iX;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   697
        TDirection iY;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   698
        };
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   699
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   700
    /** Return the direction (up/down) of signal at aIndex */
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   701
    inline TDirection2D Direction( TInt aIndex, const RArray< TPointEntry >& aPoints )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   702
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   703
        const TPoint& pos = aPoints[ aIndex ].iPos;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   704
        const TPoint& prevPos = aPoints[ aIndex - 1 ].iPos;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   705
        TDirection2D dir = { Direction( pos.iX, prevPos.iX ),
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   706
                             Direction( pos.iY, prevPos.iY ) };
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   707
        return dir;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   708
        }   
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   709
    /** 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   710
     * @return a position in the aLow and aHigh, so that it aProportion of
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   711
     *         of length is above the pos 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   712
     */
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   713
    TReal32 ProportionalLength( TReal32 aLow, TReal32 aHigh, TReal32 aProportion )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   714
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   715
        return ( aHigh - aLow ) * aProportion / ( 1 + aProportion );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   716
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   717
    
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   718
    /** 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   719
     * @return aVariableEdge scaled to new position, when the other edge changes
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   720
     *         from aOldEdge to aNewEdge, so that aOrigin maintains the *same relative
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   721
     *         position* between aVariableEdge and the other edge 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   722
     */
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   723
    inline TReal32 ScaledEdge( TReal32 aOrigin, TReal32 aVariableEdge, 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   724
            TReal32 aOldEdge, TReal aNewEdge )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   725
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   726
        TReal32 proportion = Proportion( aOrigin, aVariableEdge, aOldEdge );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   727
        return ( proportion * aNewEdge - aOrigin ) / ( proportion - 1 );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   728
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   729
    
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   730
    TScale Rescale( TReal32 aPos, TDirection aDir, TDirection aPrevDir, 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   731
            const TScale& aPrevScale, const TEdges& aEdges )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   732
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   733
        TScale scale( aPrevScale );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   734
        if ( aPrevDir != aDir )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   735
            {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   736
            // the code duplication is accepted here, since it is difficult to factor out
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   737
            // while maintaining the understandability of this anyway complex algorithm
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   738
            if ( aDir == ESmaller )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   739
                {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   740
                scale.iMin = aEdges.iMin;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   741
                if ( aPrevScale.iZero < aPos )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   742
                    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   743
                    TReal32 proportionAboveZero = Proportion( aPos, aPrevScale.iZero, aPrevScale.iMax );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   744
                    scale.iZero = aPos - ProportionalLength( aEdges.iMin, aPos, proportionAboveZero );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   745
                    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   746
                else 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   747
                    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   748
                    // adjust zero pos so that proportion between aPos, Min, and Zero pos 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   749
                    // stay the same (Min will move to 0, aPos stays the same)
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   750
                    scale.iZero = ScaledEdge( aPos, aPrevScale.iZero, 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   751
                        aPrevScale.iMin, aEdges.iMin );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   752
                    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   753
                // adjust the upper edge to take into account the movement of zero pos
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   754
                scale.iMax = ScaledEdge( aPos, aPrevScale.iMax, 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   755
                    aPrevScale.iZero, scale.iZero );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   756
                }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   757
            else // ELarger
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   758
                {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   759
                scale.iMax = aEdges.iMax;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   760
                if ( aPos < aPrevScale.iZero )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   761
                    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   762
                    TReal32 proportionBelowZero = Proportion( aPos, aPrevScale.iZero, aPrevScale.iMin );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   763
                    scale.iZero = aPos + ProportionalLength( aPos, aEdges.iMax, proportionBelowZero );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   764
                    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   765
                else
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   766
                    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   767
                    // adjust zero pos so that proportion between aPos, Max, and Zero pos 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   768
                    // stay the same (Max will move edge, aPos stays the same)
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   769
                    scale.iZero = ScaledEdge( aPos, aPrevScale.iZero, 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   770
                        aPrevScale.iMax, aEdges.iMax );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   771
                    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   772
                // adjust the lower edge to take into account the movement of zero pos
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   773
                scale.iMin = ScaledEdge( aPos, aPrevScale.iMin, 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   774
                    aPrevScale.iZero, scale.iZero );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   775
                }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   776
            }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   777
        return scale;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   778
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   779
     
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   780
    /** Edges in x and y dimensions */
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   781
    NONSHARABLE_STRUCT( TEdges2D )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   782
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   783
        TEdges iX;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   784
        TEdges iY;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   785
        };
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   786
    
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   787
    /** 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   788
     * @param aEdges edges of the area in which gesture points are accepted
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   789
     * @return the scale of latest point in the list of points 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   790
     */
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   791
    TScale2D Scale( const RArray< TPointEntry >& aPoints, const TEdges2D& aEdges )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   792
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   793
        TScale2D scale = { TScale( aPoints[0].iPos.iX, aEdges.iX ),
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   794
                           TScale( aPoints[0].iPos.iY, aEdges.iY ) };
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   795
        TInt count = aPoints.Count();
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   796
        if ( count > 1 )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   797
            {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   798
            // iterate the whole point list to arrive to the current scale
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   799
            TDirection2D dir( Direction( 1, aPoints ) );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   800
            for ( TInt i = 1; i < count; i++ )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   801
                {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   802
                // get direction at i
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   803
                TDirection2D newDir( Direction( i, aPoints ) );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   804
                // get new scale at i
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   805
                scale.iX = Rescale( aPoints[i - 1].iPos.iX, newDir.iX, dir.iX, scale.iX, aEdges.iX );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   806
                scale.iY = Rescale( aPoints[i - 1].iPos.iY, newDir.iY, dir.iY, scale.iY, aEdges.iY );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   807
                dir = newDir;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   808
                }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   809
            }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   810
        return scale;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   811
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   812
    } // unnamed namespace
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   813
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   814
TRealPoint CGesture::SpeedPercent( const TRect& aEdges ) const
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   815
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   816
    // x and y coordinates are easier to handle separately, extract from TRect:
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   817
    // ((iMinX, iMinY), (iMaxX, iMaxY)) -> ((iMinX, iMaxX), (iMinY, iMaxY))
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   818
    TEdges2D edges = { { aEdges.iTl.iX, aEdges.iBr.iX },
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   819
                       { aEdges.iTl.iY, aEdges.iBr.iY } };
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   820
    // work out the current scale (coordinate -> percentage mapping) from 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   821
    // the history of points (i.e., points of current gesture). Then
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   822
    // calculate the percentage of the current position.
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   823
    return Scale( iPoints, edges ).Percent( CurrentPos() );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   824
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   825
    
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   826
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   827
// Speed
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   828
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   829
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   830
TRealPoint CGesture::Speed() const
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   831
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   832
    const TReal32 KMicroSecondsInSecond = 1000000;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   833
    
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   834
    // Speed is only evaluated at the end of the swipe
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   835
    // if user stops at the end of the swipe before lifting stylus,
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   836
    // speed is zero. If time is zero, return 0 speed (infinite does 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   837
    // not make sense either). Will need to consider also earlier points 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   838
    // and their times or start time, if this zero-speed behavior is a problem
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   839
    TRealPoint speed;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   840
    TReal32 time = static_cast<TReal32>( TimeFromPreviousPoint().Int() ) 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   841
        / KMicroSecondsInSecond;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   842
    if ( !IsMovementStopped() && time > 0 )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   843
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   844
        TPoint distance = CurrentPos() - PreviousPos();
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   845
        speed.iX = static_cast<TReal32>( distance.iX ) / time;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   846
        speed.iY = static_cast<TReal32>( distance.iY ) / time;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   847
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   848
    return speed;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   849
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   850
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   851
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   852
// Distance
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   853
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   854
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   855
TPoint CGesture::Distance() const
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   856
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   857
    return CurrentPos() - StartPos();
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   858
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   859
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   860
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   861
// Visual
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   862
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   863
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   864
CAlfVisual* CGesture::Visual() const
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   865
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   866
    return iVisual;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   867
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   868
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   869
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   870
// TimeFromPreviousPoint
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   871
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   872
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   873
inline TTimeIntervalMicroSeconds32 CGesture::TimeFromPreviousPoint() const
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   874
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   875
    const TInt KLatestEntryOffset = 1;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   876
    return Elapsed( PreviousEntry().iTime, NthLastEntry( KLatestEntryOffset ).iTime );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   877
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   878
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   879
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   880
// return nth point from the end of the points array
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   881
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   882
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   883
inline const TPointEntry& CGesture::NthLastEntry( TInt aOffset ) const
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   884
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   885
    return iPoints[ Max( iPoints.Count() - aOffset, 0 ) ];
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   886
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   887
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   888
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   889
// PreviousEntry
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   890
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   891
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   892
inline const TPointEntry& CGesture::PreviousEntry() const
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   893
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   894
    return NthLastEntry( KPreviousPointOffset );
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   895
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   896
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   897
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   898
// PreviousPos
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   899
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   900
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   901
inline TPoint CGesture::PreviousPos() const
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   902
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   903
    return PreviousEntry().iPos;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   904
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   905
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   906
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   907
// PinchPercent
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   908
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   909
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   910
TInt CGesture::PinchPercent() const
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   911
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   912
    return (iPinchEndDistance*100/iPinchStartDistance);
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   913
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   914
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   915
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   916
// PinchCentrePoint
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   917
// ----------------------------------------------------------------------------
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   918
//
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   919
TPoint CGesture::PinchCentrePoint() const
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   920
    {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   921
    if( iPoints.Count() <= 0 || iSecondaryPoints.Count() <= 0 )
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   922
        {
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   923
        return TPoint(0,0);
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   924
        }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   925
    TInt greaterX = iPoints[0].iPos.iX > iSecondaryPoints[0].iPos.iX ? iPoints[0].iPos.iX : iSecondaryPoints[0].iPos.iX;
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   926
    TInt greaterY = iPoints[0].iPos.iY > iSecondaryPoints[0].iPos.iY ? iPoints[0].iPos.iY : iSecondaryPoints[0].iPos.iY; 
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   927
    return TPoint( (Abs(iPoints[0].iPos.iX - iSecondaryPoints[0].iPos.iX)/2 + greaterX), (Abs(iPoints[0].iPos.iY - iSecondaryPoints[0].iPos.iY)/2 + greaterY));
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   928
    }
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   929
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   930
// end of file
e83bab7cf002 Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff changeset
   931