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	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: scrolbar.h
	3	// Purpose: interface of wxScrollBar
	4	// Author: wxWidgets team
	5	// RCS-ID: $Id$
	6	// Licence: wxWindows license
	7	/////////////////////////////////////////////////////////////////////////////
	8
	9	/**
	10	@class wxScrollBar
	11	@wxheader{scrolbar.h}
	12
	13	A wxScrollBar is a control that represents a horizontal or
	14	vertical scrollbar. It is distinct from the two scrollbars that some windows
	15	provide automatically, but the two types of scrollbar share the way
	16	events are received.
	17
	18	@beginStyleTable
	19	@style{wxSB_HORIZONTAL}
	20	Specifies a horizontal scrollbar.
	21	@style{wxSB_VERTICAL}
	22	Specifies a vertical scrollbar.
	23	@endStyleTable
	24
	25	@library{wxcore}
	26	@category{ctrl}
	27	<!-- @appearance{scrollbar.png} -->
	28
	29	@see @ref overview_scrolling, @ref overview_eventhandling, wxScrolled
	30	*/
	31	class wxScrollBar : public wxControl
	32	{
	33	public:
	34	//@{
	35	/**
	36	Constructor, creating and showing a scrollbar.
	37
	38	@param parent
	39	Parent window. Must be non-@NULL.
	40	@param id
	41	Window identifier. The value wxID_ANY indicates a default value.
	42	@param pos
	43	Window position. If wxDefaultPosition is specified then a default
	44	position is chosen.
	45	@param size
	46	Window size. If wxDefaultSize is specified then a default size
	47	is chosen.
	48	@param style
	49	Window style. See wxScrollBar.
	50	@param validator
	51	Window validator.
	52	@param name
	53	Window name.
	54
	55	@see Create(), wxValidator
	56	*/
	57	wxScrollBar();
	58	wxScrollBar(wxWindow* parent, wxWindowID id,
	59	const wxPoint& pos = wxDefaultPosition,
	60	const wxSize& size = wxDefaultSize,
	61	long style = wxSB_HORIZONTAL,
	62	const wxValidator& validator = wxDefaultValidator,
	63	const wxString& name = "scrollBar");
	64	//@}
	65
	66	/**
	67	Destructor, destroying the scrollbar.
	68	*/
	69	~wxScrollBar();
	70
	71	/**
	72	Scrollbar creation function called by the scrollbar constructor.
	73	See wxScrollBar() for details.
	74	*/
	75	bool Create(wxWindow* parent, wxWindowID id,
	76	const wxPoint& pos = wxDefaultPosition,
	77	const wxSize& size = wxDefaultSize,
	78	long style = wxSB_HORIZONTAL,
	79	const wxValidator& validator = wxDefaultValidator,
	80	const wxString& name = "scrollBar");
	81
	82	/**
	83	Returns the page size of the scrollbar. This is the number of scroll units
	84	that will be scrolled when the user pages up or down. Often it is the
	85	same as the thumb size.
	86
	87	@see SetScrollbar()
	88	*/
	89	int GetPageSize() const;
	90
	91	/**
	92	Returns the length of the scrollbar.
	93
	94	@see SetScrollbar()
	95	*/
	96	int GetRange() const;
	97
	98	/**
	99	Returns the current position of the scrollbar thumb.
	100
	101	@see SetThumbPosition()
	102	*/
	103	int GetThumbPosition() const;
	104
	105	/**
	106	Returns the thumb or 'view' size.
	107
	108	@see SetScrollbar()
	109	*/
	110	int GetThumbSize() const;
	111
	112	/**
	113	Sets the scrollbar properties.
	114
	115	@param position
	116	The position of the scrollbar in scroll units.
	117	@param thumbSize
	118	The size of the thumb, or visible portion of the scrollbar, in scroll units.
	119	@param range
	120	The maximum position of the scrollbar.
	121	@param pageSize
	122	The size of the page size in scroll units. This is the number of units
	123	the scrollbar will scroll when it is paged up or down. Often it is the same
	124	as
	125	the thumb size.
	126	@param refresh
	127	@true to redraw the scrollbar, @false otherwise.
	128
	129	@remarks Let's say you wish to display 50 lines of text, using the same
	130	font. The window is sized so that you can only see 16
	131	lines at a time.
	132	*/
	133	virtual void SetScrollbar(int position, int thumbSize, int range,
	134	int pageSize,
	135	bool refresh = true);
	136
	137	/**
	138	Sets the position of the scrollbar.
	139
	140	@param viewStart
	141	The position of the scrollbar thumb.
	142
	143	@see GetThumbPosition()
	144	*/
	145	void SetThumbPosition(int viewStart);
	146	};
	147