/** 
 * @file lltoolfocus.h
 * @brief A tool to set the build focus point.
 *
 * $LicenseInfo:firstyear=2001&license=viewerlgpl$
 * Second Life Viewer Source Code
 * Copyright (C) 2010, Linden Research, Inc.
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License only.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
 * $/LicenseInfo$
 */

#ifndef LL_LLTOOLFOCUS_H
#define LL_LLTOOLFOCUS_H

#include "lltool.h"

class LLPickInfo;

class LLToolCamera
:	public LLTool, public LLSingleton<LLToolCamera>
{
	LLSINGLETON(LLToolCamera);
	virtual ~LLToolCamera();
public:

	virtual BOOL	handleMouseDown(S32 x, S32 y, MASK mask);
	virtual BOOL	handleMouseUp(S32 x, S32 y, MASK mask);
	virtual BOOL	handleHover(S32 x, S32 y, MASK mask);

	virtual void	onMouseCaptureLost();

	virtual void	handleSelect();
	virtual void	handleDeselect();

	virtual LLTool*	getOverrideTool(MASK mask) { return NULL; }

	static void pickCallback(const LLPickInfo& pick_info);
	BOOL mouseSteerMode() { return mMouseSteering; }

protected:
	// called from handleMouseUp and onMouseCaptureLost to "let go"
	// of the mouse and make it visible JC
	void releaseMouse();

protected:
	S32		mAccumX;
	S32		mAccumY;
	S32		mMouseDownX;
	S32		mMouseDownY;
	BOOL	mOutsideSlopX;
	BOOL	mOutsideSlopY;
	BOOL	mValidClickPoint;
    bool	mClickPickPending;
	BOOL	mValidSelection;
	BOOL	mMouseSteering;
	S32		mMouseUpX;	// needed for releaseMouse()
	S32		mMouseUpY;
	MASK	mMouseUpMask;
};


extern BOOL gCameraBtnOrbit;
extern BOOL gCameraBtnPan;
extern BOOL gCameraBtnZoom;

#endif