--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/webengine/webkitutils/stmgesturefw/inc/zoomgesturerecogniser.h	Tue Feb 02 00:56:45 2010 +0200
@@ -0,0 +1,92 @@
+/*
+* 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: Zoom Gesture Recognizer
+*
+*/
+
+#ifndef ZOOMGESTURERECOGNISER_H_
+#define ZOOMGESTURERECOGNISER_H_
+
+#include "rt_gestureengineif.h"
+#include <rt_gestureif.h>
+#include <rt_gesturelistener.h>
+
+class CCoeControl ;
+
+namespace stmGesture
+{
+
+/*!
+ * CZoomGestureRecogniser handles zoomin gesture: start from near lower left / upper right corner and drag
+ * This is useful if one wants to implement single handed zooming so can be done using thumb
+ * (no need to use pinch i.e. hold device in one hand and use two fingers of the other)
+ * Current spec is:
+ * - touch lower left corner and start dragging => initialize ZOOM IN
+ * - touch upper right corner and start dragging => initialize ZOOM OUT
+ * store the touch point and then calculate the distance until release
+ * The distance is the zoom factor (probably needs some adjustment, not just the pixels...)
+ */
+NONSHARABLE_CLASS( CZoomGestureRecogniser ): public CGestureRecogniser
+{
+public:
+	static const TGestureUid KUid = EGestureUidCornerZoom;
+
+	/** Two-phase constructor */
+	static CZoomGestureRecogniser* NewL(MGestureListener* aListener);
+	virtual ~CZoomGestureRecogniser();
+
+	/*!
+	 * MGestureRecogniserIf methods
+	 */
+	virtual TGestureRecognitionState recognise(int numOfActiveStreams, MGestureEngineIf* ge) ;
+	virtual void release(MGestureEngineIf* ge) ;
+	virtual TGestureUid gestureUid() const
+	{
+		return KUid;
+	}
+
+	/*!
+	 * Additional methods to set up zoom in gesture recogniser:
+	 * define the rectangle where the lower left corner is
+	 * \param theArea
+	 */
+	void setArea(const TRect& theArea) ;
+
+	/*!
+	 * Additional methods to set up zoom in gesture recogniser:
+	 * Define how close to the lower left corner the touch must happen
+	 * \param rangeInPixels
+	 */
+	void setRange(int rangeInPixels) ;
+
+private:
+	CZoomGestureRecogniser(MGestureListener* aListener) ;
+
+	float calculateDistance(const TPoint& aTp) ;
+	int adjustZoom(float& aPreviousDistance, float aNewDistance) ;
+
+private:
+	TRect m_area ;
+	int  m_rangesizeInPixels ;
+	TZoomType m_zoomtype ;
+	bool m_zooming ;
+	TPoint m_startingtouch ;
+	TPoint m_previoustouch ;
+	int m_delta ;
+
+};
+
+} // namespace
+
+#endif /* ZOOMGESTURERECOGNISER_H_ */