--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/meetingrequest/mrgui/src/cmrlistpanephysics.cpp	Wed Mar 31 21:08:33 2010 +0300
@@ -0,0 +1,302 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description:  MR listpane physics impl
+*
+*/
+
+#include "cmrlistpanephysics.h"
+#include "cmrlistpane.h"
+#include "nmrlayoutmanager.h"
+#include "cmrfieldcontainer.h"
+
+#include <aknphysics.h>
+
+//DEBUG
+#include "emailtrace.h"
+
+
+namespace { // codescanner::namespace
+
+const TInt KCustomDragTreshold( 10 );
+
+} // namespace
+
+// ---------------------------------------------------------------------------
+// CMRListPanePhysics::CMRListPanePhysics
+// ---------------------------------------------------------------------------
+//
+CMRListPanePhysics::CMRListPanePhysics(
+        CCoeControl& aParent, 
+        CMRFieldContainer& aViewControl, 
+        MMRPhysicsObserver& aPhysicsObserver )
+    : iParent( aParent ),
+      iViewControl( aViewControl ),
+      iPhysicsObserver( aPhysicsObserver )
+    {
+    FUNC_LOG;
+    }
+
+// ---------------------------------------------------------------------------
+// CMRListPanePhysics::ConstructL
+// ---------------------------------------------------------------------------
+//
+void CMRListPanePhysics::ConstructL()
+    {
+    FUNC_LOG;
+    iFeatureEnabled = CAknPhysics::FeatureEnabled();
+    if ( iFeatureEnabled )
+        {
+        // Physics: Create physics
+        // Give pointer to control that should be able to flick/drag
+        iPhysics = CAknPhysics::NewL( *this, &iViewControl );
+        }
+    }
+
+// ---------------------------------------------------------------------------
+// CMRListPanePhysics::NewL
+// ---------------------------------------------------------------------------
+//
+CMRListPanePhysics* CMRListPanePhysics::NewL( 
+        CCoeControl& aParent, 
+        CMRFieldContainer& aViewControl,
+        MMRPhysicsObserver& aPhysicsObserver )
+    {
+    FUNC_LOG;
+    CMRListPanePhysics* self = 
+        new ( ELeave ) CMRListPanePhysics( 
+                aParent, 
+                aViewControl, 
+                aPhysicsObserver );
+    CleanupStack::PushL( self );
+    self->ConstructL();
+    CleanupStack::Pop( self );
+    return self;
+    }
+        
+// ---------------------------------------------------------------------------
+// CMRListPanePhysics::~CMRListPanePhysics
+// ---------------------------------------------------------------------------
+//
+CMRListPanePhysics::~CMRListPanePhysics()
+    {
+    FUNC_LOG;
+    delete iPhysics;
+    }
+        
+// ---------------------------------------------------------------------------
+// CMRListPanePhysics::HandlePointerEventL
+// ---------------------------------------------------------------------------
+//
+TBool CMRListPanePhysics::HandlePointerEventL(
+        const TPointerEvent& aPointerEvent, TBool& aEventsBlocked )
+    {
+    FUNC_LOG;
+    TBool physicsStarted( EFalse );
+    if ( !iFeatureEnabled || iPhysics->OngoingPhysicsAction() ==
+            CAknPhysics::EAknPhysicsActionBouncing )
+        {
+        return physicsStarted;
+        }
+
+    // Down
+    if ( aPointerEvent.iType == TPointerEvent::EButton1Down )
+        {
+        // Save start time and start point
+        iStartTime.HomeTime();
+        iStartPoint = aPointerEvent.iPosition;
+        iDragPoint = iStartPoint;
+        }
+    
+    // Drag
+    else if ( aPointerEvent.iType == TPointerEvent::EDrag )
+        {
+        // Check how position was changed and report to physics
+        TPoint deltaPoint( iDragPoint - aPointerEvent.iPosition );
+        if( Abs( deltaPoint.iY ) < KCustomDragTreshold )
+        	{
+			deltaPoint.iX = 0;
+			deltaPoint.iY = 0;
+        	}
+        
+        iDragPoint = aPointerEvent.iPosition;
+        iPhysics->RegisterPanningPosition( deltaPoint );
+        }
+
+    // Up
+    else if ( aPointerEvent.iType == TPointerEvent::EButton1Up )
+        {
+        // Calculate dragging distance
+        TPoint drag( iStartPoint - aPointerEvent.iPosition );
+        
+        if( Abs( drag.iY ) < KCustomDragTreshold )
+        	{
+			drag.iX = 0;
+			drag.iY = 0;
+        	}
+        
+        // Start physics
+        physicsStarted = iPhysics->StartPhysics( drag, iStartTime );
+        
+        if( physicsStarted )
+        	{
+			aEventsBlocked = ETrue;
+        	}
+        else
+        	{
+			aEventsBlocked = EFalse;
+        	}
+        }    
+    
+    // Record previous pointer event
+    iPreviousPointerEvent = aPointerEvent;
+    
+    return physicsStarted;
+    }
+
+// ---------------------------------------------------------------------------
+// CMRListPanePhysics::InitPhysicsL
+// ---------------------------------------------------------------------------
+//
+void CMRListPanePhysics::InitPhysics()
+    {
+    FUNC_LOG;
+    if ( !iFeatureEnabled )
+        {
+        return;
+        }    
+    TRect parentRect( iParent.Rect() );
+
+    iWorldSize.iHeight = iViewControl.MinimumSize().iHeight;
+    iWorldSize.iWidth = iViewControl.MinimumSize().iWidth;
+    
+    iViewSize.iHeight = parentRect.Height();
+    iViewSize.iWidth = parentRect.Width();
+    
+    if( iWorldSize.iHeight < iViewSize.iHeight )
+        {
+    	iWorldSize.iHeight = iViewSize.iHeight;
+        }
+    
+
+    
+    iPhysics->ResetFriction();
+    
+    TRAP_IGNORE( iPhysics->InitPhysicsL( iWorldSize, iViewSize, EFalse ) );
+    iPhysics->UpdateViewWindowControl( &iParent );
+    }
+
+// ---------------------------------------------------------------------------
+// CMRListPanePhysics::SetWorldHeight
+// ---------------------------------------------------------------------------
+//
+void CMRListPanePhysics::SetWorldHeight( TInt aWorldHeight )
+    {
+    FUNC_LOG;
+    if ( !iFeatureEnabled )
+        {
+        return;
+        }    
+    iWorldSize.iHeight = aWorldHeight;
+    }
+
+// ---------------------------------------------------------------------------
+// CMRListPanePhysics::ViewPositionChanged
+// ---------------------------------------------------------------------------
+//
+void CMRListPanePhysics::ViewPositionChanged( const TPoint& aNewPosition,
+                          TBool aDrawNow,
+                          TUint /*aFlags*/ )
+    {
+    FUNC_LOG;
+    if ( !iFeatureEnabled )
+        {
+        return;
+        }
+    if ( iPhysics->OngoingPhysicsAction() ==
+            CAknPhysics::EAknPhysicsActionBouncing )
+        {
+        return;
+        }
+
+    iVerScrollIndex = aNewPosition.iY - iViewSize.iHeight / 2;
+    
+    // Parents position is taken into account, by
+    // adding the extra x and y coordinates to field containers
+    // new position.
+    iViewControl.SetPosition( TPoint( 
+            iParent.Position().iX, 
+            -iVerScrollIndex + iParent.Position().iY ) );
+    
+    // Draw only when drawing is allowed
+    if ( aDrawNow )
+        {
+        iParent.DrawDeferred();
+        }        
+    }
+
+// ---------------------------------------------------------------------------
+// CMRListPanePhysics::PhysicEmulationEnded
+// ---------------------------------------------------------------------------
+//
+void CMRListPanePhysics::PhysicEmulationEnded()
+    {
+    FUNC_LOG;
+    iPhysicsObserver.PhysicsEmulationEnded();
+    }
+
+// ---------------------------------------------------------------------------
+// CMRListPanePhysics::ViewPosition
+// ---------------------------------------------------------------------------
+//
+TPoint CMRListPanePhysics::ViewPosition() const
+    {
+    FUNC_LOG;
+    if ( !iFeatureEnabled )
+        {
+        return TPoint( iParent.Position() );
+        }
+    
+    // This is the default implementation
+    TPoint viewPosition( 
+            iViewSize.iWidth / 2, 
+            iViewSize.iHeight / 2 + iVerScrollIndex );
+    
+    return viewPosition;
+    }
+
+// ---------------------------------------------------------------------------
+// CMRListPanePhysics::UpdateVerticalScrollIndex
+// ---------------------------------------------------------------------------
+//
+void CMRListPanePhysics::UpdateVerticalScrollIndex( TInt aVerScrollIndex )
+    {
+    FUNC_LOG;
+    if ( iFeatureEnabled )
+        {
+        // Physics' new position is updated to this member, when field 
+        // container is scrolled by someone else than physics.
+        iVerScrollIndex = aVerScrollIndex;
+        }
+    }
+
+// ---------------------------------------------------------------------------
+// CMRListPanePhysics::VerticalScrollIndex
+// ---------------------------------------------------------------------------
+//
+TInt CMRListPanePhysics::VerticalScrollIndex()
+    {
+    return iVerScrollIndex;
+    }
+// End of file
+