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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( wxCoord x, wxCoord y, wxCoord w, wxCoord h );
	56	wxRegion( const wxPoint& topLeft, const wxPoint& bottomRight );
	57	wxRegion( const wxRect& rect );
	58	wxRegion();
	59	virtual ~wxRegion();
	60
	61	wxRegion( const wxRegion& r ) { Ref(r); }
	62	wxRegion& operator = ( const wxRegion& r ) { Ref(r); return *this; }
	63
	64	bool operator == ( const wxRegion& region );
	65	bool operator != ( const wxRegion& region );
	66
	67	void Clear();
	68
	69	bool Union( wxCoord x, wxCoord y, wxCoord width, wxCoord height );
	70	bool Union( const wxRect& rect );
	71	bool Union( const wxRegion& region );
	72
	73	bool Intersect( wxCoord x, wxCoord y, wxCoord width, wxCoord height );
	74	bool Intersect( const wxRect& rect );
	75	bool Intersect( const wxRegion& region );
	76
	77	bool Subtract( wxCoord x, wxCoord y, wxCoord width, wxCoord height );
	78	bool Subtract( const wxRect& rect );
	79	bool Subtract( const wxRegion& region );
	80
	81	bool Xor( wxCoord x, wxCoord y, wxCoord width, wxCoord height );
	82	bool Xor( const wxRect& rect );
	83	bool Xor( const wxRegion& region );
	84
	85	void GetBox( wxCoord& x, wxCoord& y, wxCoord&w, wxCoord &h ) const;
	86	wxRect GetBox() const ;
	87
	88	bool Empty() const;
	89	bool IsEmpty() const { return Empty(); }
	90
	91	wxRegionContain Contains( wxCoord x, wxCoord y ) const;
	92	wxRegionContain Contains( wxCoord x, wxCoord y, wxCoord w, wxCoord h ) const;
	93	wxRegionContain Contains(const wxPoint& pt) const;
	94	wxRegionContain Contains(const wxRect& rect) const;
	95
	96	public:
	97	wxList *GetRectList() const;
	98	GdkRegion *GetRegion() const;
	99
	100	protected:
	101	// helper of Intersect()
	102	bool IntersectRegionOnly(const wxRegion& reg);
	103
	104	// call this before modifying the region
	105	void Unshare();
	106
	107	private:
	108	DECLARE_DYNAMIC_CLASS(wxRegion);
	109	};
	110
	111	// ----------------------------------------------------------------------------
	112	// wxRegionIterator: decomposes a region into rectangles
	113	// ----------------------------------------------------------------------------
	114
	115	class wxRegionIterator: public wxObject
	116	{
	117	public:
	118	wxRegionIterator();
	119	wxRegionIterator(const wxRegion& region);
	120
	121	void Reset() { m_current = 0u; }
	122	void Reset(const wxRegion& region);
	123
	124	operator bool () const;
	125	bool HaveRects() const;
	126
	127	void operator ++ ();
	128	void operator ++ (int);
	129
	130	wxCoord GetX() const;
	131	wxCoord GetY() const;
	132	wxCoord GetW() const;
	133	wxCoord GetWidth() const { return GetW(); }
	134	wxCoord GetH() const;
	135	wxCoord GetHeight() const { return GetH(); }
	136	wxRect GetRect() const;
	137
	138	private:
	139	size_t m_current;
	140	wxRegion m_region;
	141
	142	private:
	143	DECLARE_DYNAMIC_CLASS(wxRegionIterator);
	144	};
	145
	146
	147	#endif
	148	// _WX_GTK_REGION_H_