/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
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 *************************************************************/


#ifndef _SV_SLIDER_HXX
#define _SV_SLIDER_HXX

#include <vcl/sv.h>
#include <vcl/dllapi.h>
#include <vcl/ctrl.hxx>
// for enum ScrollType
#include <vcl/scrbar.hxx>

// ----------
// - Slider -
// ----------

class VCL_DLLPUBLIC Slider : public Control
{
private:
	Rectangle		maChannel1Rect;
	Rectangle		maChannel2Rect;
	Rectangle		maThumbRect;
	long			mnStartPos;
	long			mnMouseOff;
	long			mnThumbPixOffset;
	long			mnThumbPixRange;
	long			mnThumbPixPos;
	long			mnChannelPixOffset;
	long			mnChannelPixRange;
	long			mnChannelPixTop;
	long			mnChannelPixBottom;
	long			mnMinRange;
	long			mnMaxRange;
	long			mnThumbPos;
	long			mnLineSize;
	long			mnPageSize;
	long			mnDelta;
	sal_uInt16			mnDragDraw;
	sal_uInt16			mnStateFlags;
	ScrollType		meScrollType;
	sal_Bool			mbCalcSize;
	sal_Bool			mbFullDrag;
	Link			maSlideHdl;
	Link			maEndSlideHdl;

    using Control::ImplInitSettings;
    using Window::ImplInit;
	SAL_DLLPRIVATE void	ImplInit( Window* pParent, WinBits nStyle );
	SAL_DLLPRIVATE void	ImplLoadRes( const ResId& rResId );
	SAL_DLLPRIVATE void	ImplInitSettings();
	SAL_DLLPRIVATE void	ImplUpdateRects( sal_Bool bUpdate = sal_True );
	SAL_DLLPRIVATE long	ImplCalcThumbPos( long nPixPos );
	SAL_DLLPRIVATE long	ImplCalcThumbPosPix( long nPos );
	SAL_DLLPRIVATE void	ImplCalc( sal_Bool bUpdate = sal_True );
	SAL_DLLPRIVATE void	ImplDraw( sal_uInt16 nDrawFlags );
	SAL_DLLPRIVATE sal_Bool	ImplIsPageUp( const Point& rPos );
	SAL_DLLPRIVATE sal_Bool	ImplIsPageDown( const Point& rPos );
	SAL_DLLPRIVATE long	ImplSlide( long nNewPos, sal_Bool bCallEndSlide );
	SAL_DLLPRIVATE long	ImplDoAction( sal_Bool bCallEndSlide );
	SAL_DLLPRIVATE void	ImplDoMouseAction( const Point& rPos, sal_Bool bCallAction = sal_True );
	SAL_DLLPRIVATE long	ImplDoSlide( long nNewPos );
	SAL_DLLPRIVATE long	ImplDoSlideAction( ScrollType eScrollType );

public:
					Slider( Window* pParent, WinBits nStyle = WB_HORZ );
					Slider( Window* pParent, const ResId& rResId );

	virtual void	MouseButtonDown( const MouseEvent& rMEvt );
	virtual void	MouseButtonUp( const MouseEvent& rMEvt );
	virtual void	Tracking( const TrackingEvent& rTEvt );
	virtual void	KeyInput( const KeyEvent& rKEvt );
	virtual void	Paint( const Rectangle& rRect );
	virtual void	Resize();
	virtual void	RequestHelp( const HelpEvent& rHEvt );
	virtual void	StateChanged( StateChangedType nType );
	virtual void	DataChanged( const DataChangedEvent& rDCEvt );

	virtual void	Slide();
	virtual void	EndSlide();

	void			EnableDrag( sal_Bool bEnable = sal_True )
						{ mbFullDrag = bEnable; }
	sal_Bool			IsDragEnabled() const { return mbFullDrag; }

	void			SetRangeMin( long nNewRange );
	long			GetRangeMin() const { return mnMinRange; }
	void			SetRangeMax( long nNewRange );
	long			GetRangeMax() const { return mnMaxRange; }
	void			SetRange( const Range& rRange );
	Range			GetRange() const { return Range( GetRangeMin(), GetRangeMax() ); }
	void			SetThumbPos( long nThumbPos );
	long			GetThumbPos() const { return mnThumbPos; }
	void			SetLineSize( long nNewSize ) { mnLineSize = nNewSize; }
	long			GetLineSize() const { return mnLineSize; }
	void			SetPageSize( long nNewSize ) { mnPageSize = nNewSize; }
	long			GetPageSize() const { return mnPageSize; }

	long			GetDelta() const { return mnDelta; }

	Size			CalcWindowSizePixel();

	void			SetSlideHdl( const Link& rLink ) { maSlideHdl = rLink; }
	const Link& 	GetSlideHdl() const { return maSlideHdl;	}
	void			SetEndSlideHdl( const Link& rLink ) { maEndSlideHdl = rLink; }
	const Link& 	GetEndSlideHdl() const { return maEndSlideHdl; }
};

#endif // _SV_SLIDER_HXX