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1 /* |
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2 * Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of the License "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: Algorithm to recognise gesture from a stream of points |
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15 * |
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16 */ |
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17 |
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18 |
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19 #ifndef _GESTURERECOGNISER_H_ |
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20 #define _GESTURERECOGNISER_H_ |
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21 |
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22 #include <e32std.h> |
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23 #include "rt_gestureobserver.h" |
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24 |
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25 namespace RT_GestureHelper |
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26 { |
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27 |
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28 class TPointArray; |
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29 |
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30 /** |
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31 * Note: Not a static class or a function pointer, just to make it sligthly |
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32 * easier to replace it with a heavier implementation |
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33 */ |
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34 NONSHARABLE_CLASS( TGestureRecogniser ) |
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35 { |
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36 public: |
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37 /** |
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38 * Translates points into a gesture code |
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39 * @param aPoints Points that form the gestures. Client is not required |
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40 * to pass in repeated points (sequential points that are |
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41 * almost in the same place) |
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42 * @param aIsHolding ETrue if gesture was ended at pointer being held down at same position |
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43 * EFalse if gesture ended at pointer being released |
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44 * @return recognised gesture id or EUnknownGesture |
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45 */ |
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46 TGestureCode GestureCode( const TPointArray& aPoints ) const; |
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47 }; |
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48 |
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49 } // namespace GestureHelper |
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50 |
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51 #endif // _GESTURERECOGNISER_H_ |