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1 /* |
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2 * Copyright (c) 2009 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 "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: AknPhysics control environment observer |
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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 #include <aknphysics.h> |
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20 #include <aknappui.h> |
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21 #include <aknpointereventmodifier.h> |
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22 |
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23 #include "aknphysicsconeobserver.h" |
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24 #include "aknphysicskeyconsumer.h" |
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25 #include "aknphysicsrestrictor.h" |
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26 #include "aknphysicsdragobserver.h" |
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27 |
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28 // ======== MEMBER FUNCTIONS ======== |
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29 |
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30 // --------------------------------------------------------------------------- |
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31 // CAknPhysicsConeObserver::NewL |
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32 // --------------------------------------------------------------------------- |
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33 // |
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34 CAknPhysicsConeObserver* CAknPhysicsConeObserver::NewL( |
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35 CAknPhysics* aPhysics, CAknPhysicsRestrictor* aRestrictor ) |
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36 { |
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37 CAknPhysicsConeObserver* self = |
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38 CAknPhysicsConeObserver::NewLC( aPhysics, aRestrictor ); |
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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 |
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44 // --------------------------------------------------------------------------- |
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45 // CAknPhysicsConeObserver::NewLC |
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46 // --------------------------------------------------------------------------- |
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47 // |
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48 CAknPhysicsConeObserver* CAknPhysicsConeObserver::NewLC( |
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49 CAknPhysics* aPhysics, CAknPhysicsRestrictor* aRestrictor ) |
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50 { |
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51 CAknPhysicsConeObserver* self |
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52 = new ( ELeave ) CAknPhysicsConeObserver( aPhysics, aRestrictor ); |
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53 CleanupStack::PushL( self ); |
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54 self->ConstructL(); |
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55 return self; |
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56 } |
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57 |
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58 |
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59 // --------------------------------------------------------------------------- |
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60 // CAknPhysicsConeObserver::~CAknPhysicsConeObserver |
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61 // --------------------------------------------------------------------------- |
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62 // |
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63 CAknPhysicsConeObserver::~CAknPhysicsConeObserver() |
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64 { |
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65 if ( iCoeEnv ) |
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66 { |
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67 iCoeEnv->RemoveForegroundObserver( *this ); |
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68 iCoeEnv->RemoveMessageMonitorObserver( *this ); |
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69 |
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70 if ( iCoeEnv->AppUi() ) |
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71 { |
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72 iCoeEnv->AppUi()->RemoveFromStack( iKeyConsumer ); |
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73 } |
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74 } |
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75 delete iDragObserver; |
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76 delete iKeyConsumer; |
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77 } |
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78 |
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79 |
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80 // --------------------------------------------------------------------------- |
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81 // CAknPhysicsConeObserver::EventHandlingAllowed |
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82 // --------------------------------------------------------------------------- |
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83 // |
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84 TBool CAknPhysicsConeObserver::EventHandlingAllowed() const |
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85 { |
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86 if ( !iEventsAllowed |
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87 || OngoingAction() == CAknPhysics::EAknPhysicsActionBouncing ) |
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88 { |
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89 return EFalse; |
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90 } |
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91 return ETrue; |
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92 } |
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93 |
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94 |
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95 // --------------------------------------------------------------------------- |
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96 // CAknPhysicsConeObserver::SetViewWindowControl |
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97 // --------------------------------------------------------------------------- |
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98 // |
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99 void CAknPhysicsConeObserver::SetViewWindowControl( CCoeControl* aControl ) |
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100 { |
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101 if ( aControl ) |
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102 { |
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103 CCoeControl* windowControl( aControl ); |
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104 while ( windowControl && !windowControl->OwnsWindow() ) |
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105 { |
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106 windowControl = windowControl->Parent(); |
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107 } |
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108 if ( windowControl ) |
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109 { |
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110 iWindowControl = windowControl; |
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111 } |
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112 else |
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113 { |
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114 iWindowControl = aControl; |
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115 } |
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116 iViewControl = aControl; |
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117 } |
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118 } |
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119 |
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120 |
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121 // --------------------------------------------------------------------------- |
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122 // CAknPhysicsConeObserver::PhysicsStateChanged |
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123 // --------------------------------------------------------------------------- |
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124 // |
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125 void CAknPhysicsConeObserver::PhysicsStateChanged() |
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126 { |
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127 // Make sure that if we are foreground, we are monitoring ws events. |
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128 if ( !iMonitoringWs && iCoeEnv ) |
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129 { |
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130 CAknAppUi* appUi( AppUi() ); |
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131 if ( appUi && appUi->IsForeground() ) |
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132 { |
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133 HandleGainingForeground(); |
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134 } |
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135 } |
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136 } |
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137 |
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138 |
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139 // --------------------------------------------------------------------------- |
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140 // CAknPhysicsConeObserver::DragChanged |
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141 // --------------------------------------------------------------------------- |
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142 // |
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143 TBool CAknPhysicsConeObserver::DragChanged( const TBool& aLandscape, |
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144 TPoint& aDragDistance, |
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145 TInt& aMoveTime ) const |
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146 { |
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147 if ( iDragObserver && iDragObserver->DragChanged() ) |
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148 { |
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149 TPoint changedDrag( iDragObserver->ChangedDragDistance() ); |
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150 if ( aLandscape && changedDrag.iX != aDragDistance.iX ) |
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151 { |
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152 aDragDistance.iX = changedDrag.iX; |
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153 aMoveTime = iDragObserver->ChangedHorizontalDragMoveTime(); |
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154 return ETrue; |
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155 } |
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156 else if ( !aLandscape && changedDrag.iY != aDragDistance.iY ) |
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157 { |
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158 aDragDistance.iY = changedDrag.iY; |
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159 aMoveTime = iDragObserver->ChangedVerticalDragMoveTime(); |
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160 return ETrue; |
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161 } |
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162 } |
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163 return EFalse; |
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164 } |
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165 |
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166 |
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167 // --------------------------------------------------------------------------- |
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168 // CAknPhysicsConeObserver::UpdateViewWindowControl |
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169 // --------------------------------------------------------------------------- |
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170 // |
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171 void CAknPhysicsConeObserver::UpdateViewWindowControl( CCoeControl* aControl ) |
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172 { |
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173 if ( !aControl ) |
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174 { |
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175 aControl = iViewControl; |
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176 } |
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177 SetViewWindowControl( aControl ); |
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178 } |
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179 |
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180 |
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181 // --------------------------------------------------------------------------- |
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182 // CAknPhysicsConeObserver::CAknPhysicsConeObserver |
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183 // --------------------------------------------------------------------------- |
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184 // |
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185 CAknPhysicsConeObserver::CAknPhysicsConeObserver( |
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186 CAknPhysics* aPhysics, CAknPhysicsRestrictor* aRestrictor ) |
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187 : |
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188 iPhysics( aPhysics ), |
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189 iKeyConsumer( NULL ), |
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190 iCoeEnv( CCoeEnv::Static() ), |
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191 iEventsAllowed( ETrue ), |
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192 iMonitoringWs( EFalse ), |
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193 iWindowControl( NULL ), |
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194 iViewControl( NULL ), |
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195 iRestrictor( aRestrictor ), |
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196 iDragObserver( NULL ) |
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197 { |
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198 } |
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199 |
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200 |
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201 // --------------------------------------------------------------------------- |
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202 // CAknPhysicsConeObserver::ConstructL |
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203 // --------------------------------------------------------------------------- |
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204 // |
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205 void CAknPhysicsConeObserver::ConstructL() |
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206 { |
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207 iKeyConsumer = CAknPhysicsKeyConsumer::NewL( this ); |
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208 iDragObserver = CAknPhysicsDragObserver::NewL( |
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209 iRestrictor->ParameterProvider() ); |
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210 if ( iCoeEnv ) |
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211 { |
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212 iCoeEnv->AppUi()->AddToStackL( iKeyConsumer, |
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213 ECoeStackPriorityEnvironmentFilter, |
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214 ECoeStackFlagRefusesFocus ); |
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215 iCoeEnv->AddForegroundObserverL( *this ); |
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216 } |
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217 } |
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218 |
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219 |
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220 // --------------------------------------------------------------------------- |
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221 // CAknPhysicsConeObserver::OngoingAction |
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222 // --------------------------------------------------------------------------- |
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223 // |
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224 TInt CAknPhysicsConeObserver::OngoingAction() const |
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225 { |
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226 if ( iPhysics ) |
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227 { |
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228 return iPhysics->OngoingPhysicsAction(); |
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229 } |
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230 return 0; |
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231 } |
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232 |
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233 |
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234 // --------------------------------------------------------------------------- |
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235 // CAknPhysicsConeObserver::EventTargetedToView |
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236 // --------------------------------------------------------------------------- |
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237 // |
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238 TInt CAknPhysicsConeObserver::EventTargetedToView( |
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239 const TPointerEvent* aEvent, const CCoeControl* aTargetControl ) |
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240 { |
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241 TInt target( ETargetUnresolvedControl ); |
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242 |
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243 if ( aTargetControl && iWindowControl ) |
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244 { |
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245 // target window different from view window |
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246 if ( aTargetControl != iWindowControl ) |
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247 { |
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248 // figure out if target window is iWindowControl's child window |
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249 CCoeControl* parent = const_cast<CCoeControl*>( aTargetControl ); |
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250 |
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251 while ( parent ) |
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252 { |
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253 if ( parent == iWindowControl ) |
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254 { |
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255 return ETargetChildControl; |
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256 } |
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257 |
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258 parent = parent->Parent(); |
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259 } |
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260 |
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261 target = ETargetOtherControl; |
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262 } |
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263 |
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264 // target window same as view window |
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265 else if ( iViewControl ) |
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266 { |
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267 TRect viewRect( iViewControl->Rect() ); |
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268 |
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269 // pointerevent position not in control area - view control |
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270 // not target control |
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271 if ( viewRect != TRect() |
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272 && !viewRect.Contains( aEvent->iPosition ) ) |
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273 { |
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274 target = ETargetOtherControl; |
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275 } |
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276 else |
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277 { |
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278 target = ETargetViewControl; |
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279 } |
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280 |
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281 if ( target != ETargetOtherControl ) |
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282 { |
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283 // check if there is a child control to receive the event |
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284 for ( TInt i = 0; i < iViewControl->CountComponentControls(); |
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285 i++ ) |
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286 { |
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287 CCoeControl* child = iViewControl->ComponentControl( i ); |
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288 if ( child && child->IsVisible() && !child->OwnsWindow() ) |
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289 { |
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290 if ( child->Rect().Contains( aEvent->iPosition ) ) |
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291 { |
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292 target = ETargetOtherControl; |
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293 } |
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294 } |
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295 } |
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296 } |
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297 } |
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298 } |
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299 return target; |
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300 } |
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301 |
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302 |
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303 // --------------------------------------------------------------------------- |
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304 // CAknPhysicsConeObserver::MonitorPointerEvent |
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305 // --------------------------------------------------------------------------- |
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306 // |
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307 TBool CAknPhysicsConeObserver::MonitorPointerEvent( |
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308 TPointerEvent* aEvent, CCoeControl* aTargetControl ) |
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309 { |
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310 // Check where event is targeted |
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311 TInt eventTarget( EventTargetedToView( aEvent, aTargetControl ) ); |
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312 |
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313 // Register event to drag observer |
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314 if ( iDragObserver |
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315 && ( eventTarget == ETargetViewControl |
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316 || aEvent->iType == TPointerEvent::EButton1Up ) ) |
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317 { |
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318 iDragObserver->RegisterEventPosition( aEvent ); |
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319 } |
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320 |
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321 if ( aEvent->iType == TPointerEvent::EButton1Up && |
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322 iPhysics->IsPanningDrawOmitted() ) |
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323 { |
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324 // Ensure that the last panning position gets drawn if the last |
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325 // view redraw was omitted due to too high CPU use. |
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326 iPhysics->DrawViewInCurrentPosition(); |
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327 } |
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328 |
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329 // Stop physics only with pointer down event |
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330 if ( aEvent->iType != TPointerEvent::EButton1Down ) |
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331 { |
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332 return EFalse; |
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333 } |
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334 |
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335 iEventsAllowed = ETrue; |
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336 TBool stopPhysics( EFalse ); |
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337 TInt ongoingAction = OngoingAction(); |
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338 |
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339 if ( ongoingAction != CAknPhysics::EAknPhysicsActionNone |
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340 && ongoingAction != CAknPhysics::EAknPhysicsActionDragging ) |
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341 { |
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342 PointerEventModified( aEvent, aTargetControl ); |
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343 } |
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344 |
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345 // Check if flick should be stopped |
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346 if ( ongoingAction == CAknPhysics::EAknPhysicsActionFlicking ) |
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347 { |
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348 // Event not targeted to view - stop flick |
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349 if ( ( eventTarget == ETargetOtherControl || |
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350 eventTarget == ETargetChildControl ) && aTargetControl ) |
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351 { |
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352 stopPhysics = ETrue; |
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353 aTargetControl->IgnoreEventsUntilNextPointerUp(); |
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354 } |
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355 } |
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356 |
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357 // No pointer events to view control while bounce is ongoing |
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358 else if ( ongoingAction == CAknPhysics::EAknPhysicsActionBouncing |
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359 && eventTarget == ETargetViewControl ) |
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360 { |
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361 iWindowControl->IgnoreEventsUntilNextPointerUp(); |
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362 } |
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363 else if ( ongoingAction == CAknPhysics::EAknPhysicsActionBouncing |
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364 && eventTarget == ETargetChildControl ) |
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365 { |
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366 aTargetControl->IgnoreEventsUntilNextPointerUp(); |
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367 } |
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368 |
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369 return stopPhysics; |
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370 } |
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371 |
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372 |
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373 // -------------------------------------------------------------------------- |
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374 // CAknPhysicsConeObserver::MonitorKeyEvent |
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375 // -------------------------------------------------------------------------- |
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376 // |
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377 TBool CAknPhysicsConeObserver::MonitorKeyEvent( TKeyEvent* /*aEvent*/ ) |
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378 { |
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379 iEventsAllowed = ETrue; |
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380 if ( OngoingAction() == CAknPhysics::EAknPhysicsActionFlicking ) |
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381 { |
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382 return ETrue; |
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383 } |
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384 return EFalse; |
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385 } |
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386 |
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387 |
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388 // -------------------------------------------------------------------------- |
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389 // CAknPhysicsConeObserver::PointerEventModified |
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390 // -------------------------------------------------------------------------- |
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391 // |
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392 TBool CAknPhysicsConeObserver::PointerEventModified( |
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393 TPointerEvent* aEvent, CCoeControl* aTargetControl ) |
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394 { |
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395 TPoint originalPosition( aEvent->iPosition ); |
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396 CAknAppUi* appUi = AppUi(); |
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397 if ( appUi ) |
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398 { |
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399 appUi->PointerEventModifier()->HandlePointerEvent( |
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400 *aEvent, aTargetControl ); |
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401 } |
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402 if ( originalPosition != aEvent->iPosition ) |
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403 { |
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404 return ETrue; |
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405 } |
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406 return EFalse; |
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407 } |
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408 |
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409 |
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410 // -------------------------------------------------------------------------- |
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411 // CAknPhysicsConeObserver::AppUi |
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412 // -------------------------------------------------------------------------- |
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413 // |
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414 CAknAppUi* CAknPhysicsConeObserver::AppUi() |
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415 { |
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416 if ( iCoeEnv ) |
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417 { |
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418 return static_cast<CAknAppUi*>( iCoeEnv->AppUi() ); |
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419 } |
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420 return NULL; |
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421 } |
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422 |
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423 |
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424 // -------------------------------------------------------------------------- |
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425 // CAknPhysicsConeObserver::HandleGainingForeground |
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426 // -------------------------------------------------------------------------- |
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427 // |
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428 void CAknPhysicsConeObserver::HandleGainingForeground() |
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429 { |
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430 iEventsAllowed = ETrue; |
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431 if ( iCoeEnv && !iMonitoringWs ) |
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432 { |
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433 TRAP_IGNORE( iCoeEnv->AddMessageMonitorObserverL( *this ) ); |
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434 iMonitoringWs = ETrue; |
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435 } |
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436 if ( iPhysics ) |
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437 { |
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438 iPhysics->SetBounceTactileFeedback( ETrue ); |
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439 } |
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440 } |
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441 |
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442 |
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443 // -------------------------------------------------------------------------- |
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444 // CAknPhysicsConeObserver::HandleLosingForeground |
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445 // -------------------------------------------------------------------------- |
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446 // |
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447 void CAknPhysicsConeObserver::HandleLosingForeground() |
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448 { |
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449 if ( iPhysics ) |
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450 { |
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451 iPhysics->SetBounceTactileFeedback( EFalse ); |
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452 } |
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453 if ( iPhysics |
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454 && OngoingAction() == CAknPhysics::EAknPhysicsActionFlicking ) |
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455 { |
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456 iPhysics->StopPhysics(); |
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457 iPhysics->ResetFriction(); |
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458 } |
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459 else if ( OngoingAction() == CAknPhysics::EAknPhysicsActionNone |
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460 || OngoingAction() == CAknPhysics::EAknPhysicsActionDragging |
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461 && iPhysics ) |
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462 { |
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463 iPhysics->UpdateViewPosition(); |
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464 } |
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465 if ( iCoeEnv && iMonitoringWs ) |
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466 { |
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467 iCoeEnv->RemoveMessageMonitorObserver( *this ); |
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468 iMonitoringWs = EFalse; |
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469 } |
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470 } |
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471 |
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472 |
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473 // -------------------------------------------------------------------------- |
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474 // CAknPhysicsConeObserver::MonitorWsMessage |
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475 // -------------------------------------------------------------------------- |
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476 // |
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477 void CAknPhysicsConeObserver::MonitorWsMessage( const TWsEvent &aEvent ) |
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478 { |
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479 TBool stopPhysics( EFalse ); |
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480 |
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481 // Check if physics should be stopped with pointer event |
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482 if ( aEvent.Type() == EEventPointer ) |
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483 { |
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484 CCoeControl* targetControl = |
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485 reinterpret_cast<CCoeControl*>( aEvent.Handle() ); |
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486 if ( targetControl ) |
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487 { |
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488 stopPhysics = MonitorPointerEvent( |
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489 aEvent.Pointer(), targetControl ); |
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490 } |
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491 } |
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492 |
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493 // Check if physics should be stopped with key event |
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494 else if ( aEvent.Type() == EEventKeyDown ) |
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495 { |
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496 stopPhysics = MonitorKeyEvent( aEvent.Key() ); |
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497 } |
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498 |
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499 // Stop physics with layout change if flicking |
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500 else if ( aEvent.Type() == EEventScreenDeviceChanged |
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501 && OngoingAction() == CAknPhysics::EAknPhysicsActionFlicking ) |
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502 { |
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503 stopPhysics = ETrue; |
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504 } |
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505 |
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506 if ( stopPhysics && iPhysics ) |
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507 { |
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508 iPhysics->StopPhysics(); |
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509 iPhysics->ResetFriction(); |
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510 iEventsAllowed = EFalse; |
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511 } |
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512 } |