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1 /* |
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2 * Copyright (c) 2008 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: Gesture helper implementation |
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15 * |
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16 */ |
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17 |
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18 #include "GenericSimpleGesture.h" |
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19 #include "touchgesturerecogniser.h" |
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20 #include "rt_uievent.h" |
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21 #include "filelogger.h" |
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22 |
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23 using namespace stmGesture ; |
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24 |
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25 CTouchGestureRecogniser::CTouchGestureRecogniser(MGestureListener* aListener) : |
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26 CGestureRecogniser(aListener) |
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27 { |
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28 } |
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29 |
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30 CTouchGestureRecogniser* CTouchGestureRecogniser::NewL(MGestureListener* aListener) |
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31 { |
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32 CTouchGestureRecogniser* self = new (ELeave) CTouchGestureRecogniser(aListener) ; |
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33 return self; |
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34 } |
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35 |
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36 CTouchGestureRecogniser::~CTouchGestureRecogniser() |
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37 { |
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38 } |
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39 |
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40 /*! |
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41 * Touch gesture recogniser. Note that this one never owns the gesture, it just calls |
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42 * the callback if it detects ETouch inside the area being watched. |
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43 * There could be also check for the target window? |
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44 */ |
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45 TGestureRecognitionState CTouchGestureRecogniser::recognise(int numOfActiveStreams, |
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46 MGestureEngineIf* pge) |
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47 { |
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48 TGestureRecognitionState state = ENotMyGesture; |
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49 // Check if we are enabled or not |
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50 if (!m_gestureEnabled) return state ; |
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51 |
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52 // Look at the events to see if it looks like edge scroll with one pointer |
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53 if (numOfActiveStreams == 1) |
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54 { |
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55 // Then look at the event stream, it has to be EHold |
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56 const stmUiEventEngine::MUiEvent* puie = pge->getUiEvents(0); |
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57 if (!puie) return state; |
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58 stmUiEventEngine::TUiEventCode eventCode = puie->Code(); |
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59 |
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60 if (m_loggingenabled) |
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61 { |
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62 LOGARG("CTouchGestureRecogniser: 0x%x num %d code %d", this, puie->countOfEvents(), eventCode); |
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63 |
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64 } |
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65 if (eventCode == stmUiEventEngine::ETouch) |
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66 { |
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67 const TPoint& tapPoint = puie->CurrentXY(); |
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68 if (m_loggingenabled) |
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69 { |
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70 LOGARG("CTouchGestureRecogniser: 0x%x ETouch: num %d at %d, %d", this, puie->countOfEvents(), tapPoint.iX, tapPoint.iY); |
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71 LOGARG("CTouchGestureRecogniser: area, %d,%d %d,%d", m_area.iTl.iX, m_area.iTl.iY, m_area.iBr.iX, m_area.iBr.iY); |
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72 } |
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73 bool produceGesture ; |
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74 if(!m_area.IsEmpty()) |
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75 { |
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76 produceGesture = m_area.Contains(tapPoint); |
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77 if(produceGesture && m_loggingenabled) |
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78 { |
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79 LOGARG("CTouchGestureRecogniser: HIT area (%d,%d) in %d,%d %d,%d", tapPoint.iX, tapPoint.iY, m_area.iTl.iX, m_area.iTl.iY, m_area.iBr.iX, m_area.iBr.iY); |
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80 } |
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81 } |
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82 else |
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83 { |
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84 produceGesture = (m_powner == puie->Target()); // no area defined, touch detected in the window |
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85 } |
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86 if (produceGesture) |
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87 { |
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88 // state = EGestureActive ; do not take ownership, all gestures anyway start with ETouch |
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89 // issue the touch gesture |
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90 stmGesture::TGenericSimpleGesture pgest(KUid, tapPoint); |
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91 // Call the listener to inform that a touch has occurred... |
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92 m_listener->gestureEnter(pgest); |
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93 } |
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94 } |
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95 } |
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96 return state; |
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97 } |
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98 |
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99 void CTouchGestureRecogniser::release(MGestureEngineIf* /*ge*/) |
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100 { |
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101 if (m_loggingenabled) |
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102 { |
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103 LOGARG("CTouchGestureRecogniser: 0x%x release", this); |
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104 } |
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105 } |
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106 |
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107 void CTouchGestureRecogniser::setArea(const TRect& theArea) |
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108 { |
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109 m_area = theArea ; |
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110 if (m_loggingenabled) |
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111 { |
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112 LOGARG("CTouchGestureRecogniser: area, %d,%d %d,%d", m_area.iTl.iX, m_area.iTl.iY, m_area.iBr.iX, m_area.iBr.iY); |
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113 } |
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114 |
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115 } |