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Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: wx/gtk/region.h
	3	// Purpose:
	4	// Author: Robert Roebling
	5	// Id: $Id$
	6	// Copyright: (c) 1998 Robert Roebling
	7	// Licence: wxWindows licence
	8	/////////////////////////////////////////////////////////////////////////////
	9
	10	#ifndef _WX_GTK_REGION_H_
	11	#define _WX_GTK_REGION_H_
	12
	13	#ifdef __GNUG__
	14	#pragma interface
	15	#endif
	16
	17	#include "wx/list.h"
	18	#include "wx/gdiobj.h"
	19	#include "wx/gdicmn.h"
	20
	21	//-----------------------------------------------------------------------------
	22	// classes
	23	//-----------------------------------------------------------------------------
	24
	25	class wxRegion;
	26
	27	//-----------------------------------------------------------------------------
	28	// constants
	29	//-----------------------------------------------------------------------------
	30
	31	enum wxRegionContain
	32	{
	33	wxOutRegion = 0,
	34	wxPartRegion = 1,
	35	wxInRegion = 2
	36	};
	37
	38	// So far, for internal use only
	39	enum wxRegionOp
	40	{
	41	wxRGN_AND, // Creates the intersection of the two combined regions.
	42	wxRGN_COPY, // Creates a copy of the region identified by hrgnSrc1.
	43	wxRGN_DIFF, // Combines the parts of hrgnSrc1 that are not part of hrgnSrc2.
	44	wxRGN_OR, // Creates the union of two combined regions.
	45	wxRGN_XOR // Creates the union of two combined regions except for any overlapping areas.
	46	};
	47
	48	// ----------------------------------------------------------------------------
	49	// wxRegion
	50	// ----------------------------------------------------------------------------
	51
	52	class wxRegion : public wxGDIObject
	53	{
	54	public:
	55	wxRegion();
	56	wxRegion( wxCoord x, wxCoord y, wxCoord w, wxCoord h );
	57	wxRegion( const wxPoint& topLeft, const wxPoint& bottomRight );
	58	wxRegion( const wxRect& rect );
	59	wxRegion(size_t n, const wxPoint *points, int fillStyle = wxODDEVEN_RULE );
	60	virtual ~wxRegion();
	61
	62	wxRegion( const wxRegion& r ) { Ref(r); }
	63	wxRegion& operator = ( const wxRegion& r ) { Ref(r); return *this; }
	64
	65	bool operator == ( const wxRegion& region );
	66	bool operator != ( const wxRegion& region );
	67
	68	void Clear();
	69
	70	bool Union( wxCoord x, wxCoord y, wxCoord width, wxCoord height );
	71	bool Union( const wxRect& rect );
	72	bool Union( const wxRegion& region );
	73
	74	bool Intersect( wxCoord x, wxCoord y, wxCoord width, wxCoord height );
	75	bool Intersect( const wxRect& rect );
	76	bool Intersect( const wxRegion& region );
	77
	78	bool Subtract( wxCoord x, wxCoord y, wxCoord width, wxCoord height );
	79	bool Subtract( const wxRect& rect );
	80	bool Subtract( const wxRegion& region );
	81
	82	bool Xor( wxCoord x, wxCoord y, wxCoord width, wxCoord height );
	83	bool Xor( const wxRect& rect );
	84	bool Xor( const wxRegion& region );
	85
	86	void GetBox( wxCoord& x, wxCoord& y, wxCoord&w, wxCoord &h ) const;
	87	wxRect GetBox() const ;
	88
	89	bool Empty() const;
	90	bool IsEmpty() const { return Empty(); }
	91
	92	wxRegionContain Contains( wxCoord x, wxCoord y ) const;
	93	wxRegionContain Contains( wxCoord x, wxCoord y, wxCoord w, wxCoord h ) const;
	94	wxRegionContain Contains(const wxPoint& pt) const;
	95	wxRegionContain Contains(const wxRect& rect) const;
	96
	97	public:
	98	wxList *GetRectList() const;
	99	GdkRegion *GetRegion() const;
	100
	101	protected:
	102	// helper of Intersect()
	103	bool IntersectRegionOnly(const wxRegion& reg);
	104
	105	// call this before modifying the region
	106	void Unshare();
	107
	108	private:
	109	DECLARE_DYNAMIC_CLASS(wxRegion);
	110	};
	111
	112	// ----------------------------------------------------------------------------
	113	// wxRegionIterator: decomposes a region into rectangles
	114	// ----------------------------------------------------------------------------
	115
	116	class wxRegionIterator: public wxObject
	117	{
	118	public:
	119	wxRegionIterator();
	120	wxRegionIterator(const wxRegion& region);
	121
	122	void Reset() { m_current = 0u; }
	123	void Reset(const wxRegion& region);
	124
	125	operator bool () const;
	126	bool HaveRects() const;
	127
	128	void operator ++ ();
	129	void operator ++ (int);
	130
	131	wxCoord GetX() const;
	132	wxCoord GetY() const;
	133	wxCoord GetW() const;
	134	wxCoord GetWidth() const { return GetW(); }
	135	wxCoord GetH() const;
	136	wxCoord GetHeight() const { return GetH(); }
	137	wxRect GetRect() const;
	138
	139	private:
	140	size_t m_current;
	141	wxRegion m_region;
	142
	143	private:
	144	DECLARE_DYNAMIC_CLASS(wxRegionIterator);
	145	};
	146
	147
	148	#endif
	149	// _WX_GTK_REGION_H_