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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: MR listpane physics impl |
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15 * |
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16 */ |
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17 |
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18 #include "cmrlistpanephysics.h" |
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19 #include "cmrlistpane.h" |
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20 #include "nmrlayoutmanager.h" |
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21 #include "cmrfieldcontainer.h" |
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22 |
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23 #include <aknphysics.h> |
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24 |
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25 //DEBUG |
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26 #include "emailtrace.h" |
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27 |
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28 |
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29 namespace { // codescanner::namespace |
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30 |
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31 const TInt KCustomDragTreshold( 10 ); |
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32 |
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33 } // namespace |
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34 |
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35 // --------------------------------------------------------------------------- |
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36 // CMRListPanePhysics::CMRListPanePhysics |
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37 // --------------------------------------------------------------------------- |
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38 // |
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39 CMRListPanePhysics::CMRListPanePhysics( |
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40 CCoeControl& aParent, |
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41 CMRFieldContainer& aViewControl, |
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42 MMRPhysicsObserver& aPhysicsObserver ) |
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43 : iParent( aParent ), |
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44 iViewControl( aViewControl ), |
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45 iPhysicsObserver( aPhysicsObserver ) |
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46 { |
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47 FUNC_LOG; |
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48 } |
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49 |
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50 // --------------------------------------------------------------------------- |
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51 // CMRListPanePhysics::ConstructL |
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52 // --------------------------------------------------------------------------- |
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53 // |
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54 void CMRListPanePhysics::ConstructL() |
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55 { |
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56 FUNC_LOG; |
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57 iFeatureEnabled = CAknPhysics::FeatureEnabled(); |
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58 if ( iFeatureEnabled ) |
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59 { |
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60 // Physics: Create physics |
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61 // Give pointer to control that should be able to flick/drag |
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62 iPhysics = CAknPhysics::NewL( *this, &iViewControl ); |
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63 } |
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64 } |
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65 |
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66 // --------------------------------------------------------------------------- |
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67 // CMRListPanePhysics::NewL |
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68 // --------------------------------------------------------------------------- |
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69 // |
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70 CMRListPanePhysics* CMRListPanePhysics::NewL( |
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71 CCoeControl& aParent, |
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72 CMRFieldContainer& aViewControl, |
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73 MMRPhysicsObserver& aPhysicsObserver ) |
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74 { |
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75 FUNC_LOG; |
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76 CMRListPanePhysics* self = |
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77 new ( ELeave ) CMRListPanePhysics( |
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78 aParent, |
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79 aViewControl, |
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80 aPhysicsObserver ); |
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81 CleanupStack::PushL( self ); |
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82 self->ConstructL(); |
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83 CleanupStack::Pop( self ); |
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84 return self; |
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85 } |
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86 |
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87 // --------------------------------------------------------------------------- |
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88 // CMRListPanePhysics::~CMRListPanePhysics |
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89 // --------------------------------------------------------------------------- |
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90 // |
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91 CMRListPanePhysics::~CMRListPanePhysics() |
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92 { |
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93 FUNC_LOG; |
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94 delete iPhysics; |
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95 } |
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96 |
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97 // --------------------------------------------------------------------------- |
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98 // CMRListPanePhysics::HandlePointerEventL |
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99 // --------------------------------------------------------------------------- |
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100 // |
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101 TBool CMRListPanePhysics::HandlePointerEventL( |
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102 const TPointerEvent& aPointerEvent, TBool& aEventsBlocked ) |
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103 { |
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104 FUNC_LOG; |
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105 TBool physicsStarted( EFalse ); |
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106 if ( !iFeatureEnabled || iPhysics->OngoingPhysicsAction() == |
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107 CAknPhysics::EAknPhysicsActionBouncing ) |
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108 { |
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109 return physicsStarted; |
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110 } |
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111 |
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112 // Down |
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113 if ( aPointerEvent.iType == TPointerEvent::EButton1Down ) |
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114 { |
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115 // Save start time and start point |
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116 iStartTime.HomeTime(); |
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117 iStartPoint = aPointerEvent.iPosition; |
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118 iDragPoint = iStartPoint; |
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119 } |
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120 |
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121 // Drag |
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122 else if ( aPointerEvent.iType == TPointerEvent::EDrag ) |
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123 { |
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124 // Check how position was changed and report to physics |
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125 TPoint deltaPoint( iDragPoint - aPointerEvent.iPosition ); |
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126 if( Abs( deltaPoint.iY ) < KCustomDragTreshold ) |
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127 { |
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128 deltaPoint.iX = 0; |
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129 deltaPoint.iY = 0; |
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130 } |
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131 |
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132 iDragPoint = aPointerEvent.iPosition; |
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133 iPhysics->RegisterPanningPosition( deltaPoint ); |
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134 } |
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135 |
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136 // Up |
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137 else if ( aPointerEvent.iType == TPointerEvent::EButton1Up ) |
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138 { |
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139 // Calculate dragging distance |
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140 TPoint drag( iStartPoint - aPointerEvent.iPosition ); |
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141 |
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142 if( Abs( drag.iY ) < KCustomDragTreshold ) |
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143 { |
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144 drag.iX = 0; |
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145 drag.iY = 0; |
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146 } |
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147 |
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148 // Start physics |
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149 physicsStarted = iPhysics->StartPhysics( drag, iStartTime ); |
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150 |
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151 if( physicsStarted ) |
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152 { |
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153 aEventsBlocked = ETrue; |
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154 } |
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155 else |
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156 { |
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157 aEventsBlocked = EFalse; |
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158 } |
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159 } |
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160 |
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161 // Record previous pointer event |
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162 iPreviousPointerEvent = aPointerEvent; |
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163 |
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164 return physicsStarted; |
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165 } |
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166 |
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167 // --------------------------------------------------------------------------- |
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168 // CMRListPanePhysics::InitPhysicsL |
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169 // --------------------------------------------------------------------------- |
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170 // |
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171 void CMRListPanePhysics::InitPhysics() |
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172 { |
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173 FUNC_LOG; |
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174 if ( !iFeatureEnabled ) |
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175 { |
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176 return; |
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177 } |
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178 TRect parentRect( iParent.Rect() ); |
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179 |
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180 iWorldSize.iHeight = iViewControl.MinimumSize().iHeight; |
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181 iWorldSize.iWidth = iViewControl.MinimumSize().iWidth; |
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182 |
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183 iViewSize.iHeight = parentRect.Height(); |
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184 iViewSize.iWidth = parentRect.Width(); |
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185 |
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186 if( iWorldSize.iHeight < iViewSize.iHeight ) |
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187 { |
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188 iWorldSize.iHeight = iViewSize.iHeight; |
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189 } |
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190 |
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191 |
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192 |
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193 iPhysics->ResetFriction(); |
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194 |
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195 TRAP_IGNORE( iPhysics->InitPhysicsL( iWorldSize, iViewSize, EFalse ) ); |
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196 iPhysics->UpdateViewWindowControl( &iParent ); |
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197 } |
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198 |
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199 // --------------------------------------------------------------------------- |
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200 // CMRListPanePhysics::SetWorldHeight |
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201 // --------------------------------------------------------------------------- |
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202 // |
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203 void CMRListPanePhysics::SetWorldHeight( TInt aWorldHeight ) |
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204 { |
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205 FUNC_LOG; |
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206 if ( !iFeatureEnabled ) |
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207 { |
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208 return; |
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209 } |
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210 iWorldSize.iHeight = aWorldHeight; |
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211 } |
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212 |
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213 // --------------------------------------------------------------------------- |
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214 // CMRListPanePhysics::ViewPositionChanged |
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215 // --------------------------------------------------------------------------- |
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216 // |
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217 void CMRListPanePhysics::ViewPositionChanged( const TPoint& aNewPosition, |
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218 TBool aDrawNow, |
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219 TUint /*aFlags*/ ) |
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220 { |
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221 FUNC_LOG; |
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222 if ( !iFeatureEnabled ) |
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223 { |
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224 return; |
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225 } |
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226 if ( iPhysics->OngoingPhysicsAction() == |
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227 CAknPhysics::EAknPhysicsActionBouncing ) |
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228 { |
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229 return; |
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230 } |
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231 |
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232 iVerScrollIndex = aNewPosition.iY - iViewSize.iHeight / 2; |
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233 |
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234 // Parents position is taken into account, by |
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235 // adding the extra x and y coordinates to field containers |
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236 // new position. |
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237 iViewControl.SetPosition( TPoint( |
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238 iParent.Position().iX, |
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239 -iVerScrollIndex + iParent.Position().iY ) ); |
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240 |
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241 // Draw only when drawing is allowed |
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242 if ( aDrawNow ) |
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243 { |
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244 iParent.DrawDeferred(); |
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245 } |
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246 } |
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247 |
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248 // --------------------------------------------------------------------------- |
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249 // CMRListPanePhysics::PhysicEmulationEnded |
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250 // --------------------------------------------------------------------------- |
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251 // |
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252 void CMRListPanePhysics::PhysicEmulationEnded() |
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253 { |
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254 FUNC_LOG; |
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255 iPhysicsObserver.PhysicsEmulationEnded(); |
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256 } |
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257 |
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258 // --------------------------------------------------------------------------- |
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259 // CMRListPanePhysics::ViewPosition |
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260 // --------------------------------------------------------------------------- |
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261 // |
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262 TPoint CMRListPanePhysics::ViewPosition() const |
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263 { |
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264 FUNC_LOG; |
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265 if ( !iFeatureEnabled ) |
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266 { |
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267 return TPoint( iParent.Position() ); |
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268 } |
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269 |
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270 // This is the default implementation |
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271 TPoint viewPosition( |
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272 iViewSize.iWidth / 2, |
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273 iViewSize.iHeight / 2 + iVerScrollIndex ); |
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274 |
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275 return viewPosition; |
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276 } |
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277 |
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278 // --------------------------------------------------------------------------- |
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279 // CMRListPanePhysics::UpdateVerticalScrollIndex |
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280 // --------------------------------------------------------------------------- |
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281 // |
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282 void CMRListPanePhysics::UpdateVerticalScrollIndex( TInt aVerScrollIndex ) |
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283 { |
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284 FUNC_LOG; |
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285 if ( iFeatureEnabled ) |
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286 { |
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287 // Physics' new position is updated to this member, when field |
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288 // container is scrolled by someone else than physics. |
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289 iVerScrollIndex = aVerScrollIndex; |
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290 } |
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291 } |
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292 |
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293 // --------------------------------------------------------------------------- |
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294 // CMRListPanePhysics::VerticalScrollIndex |
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295 // --------------------------------------------------------------------------- |
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296 // |
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297 TInt CMRListPanePhysics::VerticalScrollIndex() |
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298 { |
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299 return iVerScrollIndex; |
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300 } |
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301 // End of file |
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302 |