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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 "edgescrollgesturerecogniser.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 CEdgeScrollGestureRecogniser::CEdgeScrollGestureRecogniser(MGestureListener* aListener) : |
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26 CPeriodic(0), m_listener(aListener) , m_area() |
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27 { |
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28 m_powner = aListener->getOwner() ; |
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29 m_gestureEnabled = true ; |
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30 m_rangesizeInPixels = 10 ; // by default 10 pixels from the edges is the area |
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31 } |
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32 |
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33 CEdgeScrollGestureRecogniser* CEdgeScrollGestureRecogniser::NewL(MGestureListener* aListener) |
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34 { |
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35 CEdgeScrollGestureRecogniser* self = new (ELeave) CEdgeScrollGestureRecogniser(aListener) ; |
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36 CleanupStack::PushL(self); |
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37 self->ConstructL(); // construct base class |
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38 CActiveScheduler::Add(self); |
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39 CleanupStack::Pop(self); |
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40 return self; |
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41 } |
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42 |
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43 CEdgeScrollGestureRecogniser::~CEdgeScrollGestureRecogniser() |
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44 { |
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45 Cancel(); |
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46 } |
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47 |
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48 TGestureRecognitionState CEdgeScrollGestureRecogniser::recognise(int numOfActiveStreams, |
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49 MGestureEngineIf* pge) |
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50 { |
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51 TGestureRecognitionState state = ENotMyGesture; |
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52 // Check if we are enabled or not |
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53 if (!m_gestureEnabled) return state ; |
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54 |
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55 // Look at the events to see if it looks like edge scroll with one pointer |
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56 if (numOfActiveStreams == 1) |
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57 { |
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58 // Then look at the event stream, it has to be EHold |
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59 const stmUiEventEngine::MUiEvent* puie = pge->getUiEvents(0); |
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60 int countOfEvents = puie->countOfEvents(); |
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61 stmUiEventEngine::TUiEventCode eventCode = puie->Code(); |
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62 |
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63 if (m_loggingenabled) |
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64 { |
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65 LOGARG("CEdgeScrollGestureRecogniser: %d num %d code %d", |
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66 eventCode, countOfEvents, eventCode); |
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67 } |
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68 |
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69 if (eventCode == stmUiEventEngine::EHold) // The last one is EHold, look if it is near the area defined |
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70 { |
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71 const TPoint& p = puie->CurrentXY(); |
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72 if (m_loggingenabled) |
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73 { |
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74 LOGARG("CEdgeScrollGestureRecogniser: 0x%x EHold: num %d code %d, %d", |
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75 this, countOfEvents, p.iX, p.iY); |
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76 LOGARG("CEdgeScrollGestureRecogniser: area, %d,%d %d,%d, range: %d", |
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77 m_area.iTl.iX, |
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78 m_area.iTl.iY, |
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79 m_area.iBr.iX, |
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80 m_area.iBr.iY, |
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81 m_rangesizeInPixels); |
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82 } |
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83 // check where the point is inside the area defined but outside of the area shrinked by m_rangesizeInPixels. |
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84 TRect rcInner = m_area ; |
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85 rcInner.Shrink(m_rangesizeInPixels, m_rangesizeInPixels) ; |
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86 if (m_area.Contains(p) && !rcInner.Contains(p)) |
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87 { |
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88 if (m_loggingenabled) |
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89 { |
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90 LOGARG("CEdgeScrollGestureRecogniser: HIT, (%d,%d) in %d,%d %d,%d, range: %d", |
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91 p.iX, p.iY, m_area.iTl.iX, m_area.iTl.iY, |
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92 m_area.iBr.iX, m_area.iBr.iY, |
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93 m_rangesizeInPixels); |
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94 } |
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95 |
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96 state = EGestureActive ; |
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97 // this is edge scroll, check where it is about... |
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98 TEdgeScroll scrolltype = EEdgeScrollUnknown ; |
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99 if (p.iY < m_area.iTl.iY + m_rangesizeInPixels) |
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100 scrolltype = EEdgeScrollUp ; // if Y is small enough, it is always up |
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101 else if (p.iY > m_area.iBr.iY - m_rangesizeInPixels) |
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102 scrolltype = EEdgeScrollDown ; // if Y is big enough, it is always down |
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103 else if (p.iX < m_area.iTl.iX + m_rangesizeInPixels) |
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104 scrolltype = EEdgeScrollLeft ; // if X is small enough, it is always left |
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105 else if (p.iX > m_area.iBr.iX - m_rangesizeInPixels) |
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106 scrolltype = EEdgeScrollRight ; // if X is big enough, it is always right |
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107 // issue the edge scroll gesture |
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108 stmGesture::TGenericSimpleGesture pgest(KUid, p, scrolltype, puie) ; |
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109 // Call the listener to inform that a Tap has occurred... |
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110 m_listener->gestureEnter(pgest) ; |
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111 } |
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112 } |
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113 } |
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114 return state; |
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115 } |
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116 |
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117 void CEdgeScrollGestureRecogniser::release(MGestureEngineIf* /*ge*/) |
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118 { |
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119 Cancel() ; // some other gesture took hold of the thing, do not send gesture |
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120 if (m_loggingenabled) |
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121 { |
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122 LOGARG("CEdgeScrollGestureRecogniser: 0x%x release", this); |
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123 } |
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124 } |
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125 |
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126 void CEdgeScrollGestureRecogniser::RunL() |
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127 { |
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128 if (m_loggingenabled) |
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129 { |
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130 LOGARG("CEdgeScrollGestureRecogniser: 0x%x timer", this); |
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131 } |
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132 } |
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133 |
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134 void CEdgeScrollGestureRecogniser::enableLogging(bool loggingOn) |
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135 { |
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136 m_loggingenabled = loggingOn; |
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137 } |
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138 |
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139 void CEdgeScrollGestureRecogniser::enable(bool enabled) |
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140 { |
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141 m_gestureEnabled = enabled ; |
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142 } |
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143 |
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144 bool CEdgeScrollGestureRecogniser::isEnabled() |
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145 { |
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146 return m_gestureEnabled ; |
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147 } |
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148 |
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149 void CEdgeScrollGestureRecogniser::setOwner(CCoeControl* owner) |
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150 { |
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151 m_powner = owner; |
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152 } |
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153 |
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154 void CEdgeScrollGestureRecogniser::setScrollRange(int rangeInPixels) |
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155 { |
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156 m_rangesizeInPixels = rangeInPixels ; |
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157 } |
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158 |
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159 void CEdgeScrollGestureRecogniser::setArea(const TRect& theArea) |
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160 { |
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161 m_area = theArea ; |
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162 if (m_loggingenabled) |
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163 { |
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164 LOGARG("CEdgeScrollGestureRecogniser: set 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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165 } |
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166 } |