--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/webkitutils/stmgesturefw/src/hoveringgesturerecogniser.cpp	Tue Feb 02 00:56:45 2010 +0200
@@ -0,0 +1,162 @@
+/*
+* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "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:   
+*
+*/
+
+#include "hoveringgesturerecogniser.h"
+#include "GenericSimpleGesture.h"
+#include "rt_uievent.h"
+
+#include "filelogger.h"
+
+using namespace stmGesture ;
+
+extern long Mm2Pixels(long mm) ;
+
+
+CHoveringGestureRecogniser::CHoveringGestureRecogniser(MGestureListener* aListener) :
+    CGestureRecogniser(aListener)
+{
+    m_hovering = false ;
+    m_hoveringspeed = 0.9f ;
+}
+
+CHoveringGestureRecogniser* CHoveringGestureRecogniser::NewL(MGestureListener* aListener)
+{
+    CHoveringGestureRecogniser* self = new (ELeave) CHoveringGestureRecogniser(aListener) ;
+    return self;
+}
+
+CHoveringGestureRecogniser::~CHoveringGestureRecogniser()
+{
+}
+
+TGestureRecognitionState CHoveringGestureRecogniser::recognise(int numOfActiveStreams,
+        MGestureEngineIf* pge)
+{
+    TGestureRecognitionState state = ENotMyGesture;
+    // Check if we are enabled or not
+    if (!m_gestureEnabled) return state ;
+
+    // Look at the events to see if it looks like hovering
+    if (numOfActiveStreams == 1)
+    {
+        // Then look at the event stream, it has to be tap and release
+        const stmUiEventEngine::MUiEvent* puie = pge->getUiEvents(0);
+        int countOfEvents = puie->countOfEvents() ;
+        stmUiEventEngine::TUiEventCode eventCode = puie->Code() ;
+        if (countOfEvents > 1) // do we have more than one event in the stream?
+        {
+            // Then look at the events to see if they are suitable for us
+            // should we check that all of the events are targeted to our window?
+            // currently we only check if the last one is for us and is EMove, then we pan...
+            if (puie->Target() == m_powner &&
+                    eventCode == stmUiEventEngine::EMove) // The last one is move in our window
+            {
+                float speedX = puie->speedX() ;
+                float speedY = puie->speedY() ;
+                if (m_loggingenabled)
+                {
+                    LOGARG("CHoveringGestureRecogniser: %d: num %d code %d, speed %f, limit %f",
+                        m_hovering, countOfEvents, eventCode, 
+                        double(speedX), double(m_hoveringspeed));
+                }
+                // It might be hovering gesture in our window, handle it
+                if (!m_hovering)
+                {
+                    // we are not yet hovering, so lets see if it is slow movement
+                    // but it must be movement; if it is 0.0 do not hover
+                    if ( ((speedX > 0.01f) ||(speedY > 0.01f)) && 
+                            ((speedX < m_hoveringspeed) || (speedY < m_hoveringspeed))
+                        )
+                    {
+                        state = EGestureActive;
+                        m_hovering = true;
+                    }
+                }
+                if (m_hovering)
+                {
+                    // after we've started hovering, the speed could be increased a little before we loose hovering
+                    // but this adjustment is not implemented now...
+                    if (speedX < m_hoveringspeed || speedY < m_hoveringspeed)
+
+                    {
+                        using stmUiEventEngine::TUiEventSpeed;
+
+                        state = EGestureActive;
+                        TUiEventSpeed speedIf(speedX, speedY);
+                        stmGesture::TDirectionalGesture pgest(
+                                        KUid,
+                                        puie->CurrentXY(),
+                                        puie->PreviousXY(),
+                                        &speedIf,
+                                        m_loggingenabled);
+
+                        // Call the listener to inform that a Hover has occurred...
+                        m_listener->gestureEnter(pgest);
+                    }
+                }
+            }
+            else if (m_hovering)
+            {
+                if (eventCode == stmUiEventEngine::ERelease) // The last one is release in any window
+                {
+                    m_hovering = false ;
+                    // release will handle informing of the listener
+                }
+            }
+        }
+        else
+        {
+            // count of events == 1, lets see if it is EMove, then we take it and start hovering
+            if (puie->Target() == m_powner &&
+                    eventCode == stmUiEventEngine::EMove) // The only one is move in our window
+            {
+                if (m_loggingenabled)
+                {
+                    LOGARG("CHoveringGestureRecogniser: move: num %d code %d", countOfEvents, eventCode);
+                }
+                state = EGestureActive;
+                stmGesture::TDirectionalGesture pgest(
+                                        KUid,
+                                        puie->CurrentXY(),
+                                        puie->PreviousXY(),
+                                        puie,
+                                        m_loggingenabled);
+
+                // Call the listener to inform that a Hover has occurred...
+                m_listener->gestureEnter(pgest);
+            }
+        }
+    }
+    if (state == ENotMyGesture)
+    {
+        // if it was not our gesture, then the state can not be hovering...
+        m_hovering = false ;
+    }
+    return state;
+}
+
+void CHoveringGestureRecogniser::release(MGestureEngineIf* /*ge*/)
+{
+    m_hovering = false ;
+    m_listener->gestureExit(KUid) ;
+}
+
+void CHoveringGestureRecogniser::setHoveringSpeed(float aSpeed) __SOFTFP
+{
+    m_hoveringspeed = aSpeed ;
+}
+