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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	// ----------------------------------------------------------------------------
	14	// wxRegion
	15	// ----------------------------------------------------------------------------
	16
	17	class WXDLLIMPEXP_CORE wxRegion : public wxRegionBase
	18	{
	19	public:
	20	wxRegion() { }
	21
	22	wxRegion( wxCoord x, wxCoord y, wxCoord w, wxCoord h )
	23	{
	24	InitRect(x, y, w, h);
	25	}
	26
	27	wxRegion( const wxPoint& topLeft, const wxPoint& bottomRight )
	28	{
	29	InitRect(topLeft.x, topLeft.y,
	30	bottomRight.x - topLeft.x, bottomRight.y - topLeft.y);
	31	}
	32
	33	wxRegion( const wxRect& rect )
	34	{
	35	InitRect(rect.x, rect.y, rect.width, rect.height);
	36	}
	37
	38	wxRegion( size_t n, const wxPoint *points, int fillStyle = wxODDEVEN_RULE );
	39
	40	#if wxUSE_IMAGE
	41	wxRegion( const wxBitmap& bmp)
	42	{
	43	Union(bmp);
	44	}
	45	wxRegion( const wxBitmap& bmp,
	46	const wxColour& transColour, int tolerance = 0)
	47	{
	48	Union(bmp, transColour, tolerance);
	49	}
	50	#endif // wxUSE_IMAGE
	51
	52	virtual ~wxRegion();
	53
	54	// wxRegionBase methods
	55	virtual void Clear();
	56	virtual bool IsEmpty() const;
	57
	58	public:
	59	// Init with GdkRegion, set ref count to 2 so that
	60	// the C++ class will not destroy the region!
	61	wxRegion( GdkRegion *region );
	62
	63	GdkRegion *GetRegion() const;
	64
	65	protected:
	66	// ref counting code
	67	virtual wxObjectRefData *CreateRefData() const;
	68	virtual wxObjectRefData CloneRefData(const wxObjectRefData data) const;
	69
	70	// wxRegionBase pure virtuals
	71	virtual bool DoIsEqual(const wxRegion& region) const;
	72	virtual bool DoGetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const;
	73	virtual wxRegionContain DoContainsPoint(wxCoord x, wxCoord y) const;
	74	virtual wxRegionContain DoContainsRect(const wxRect& rect) const;
	75
	76	virtual bool DoOffset(wxCoord x, wxCoord y);
	77	virtual bool DoUnionWithRect(const wxRect& rect);
	78	virtual bool DoUnionWithRegion(const wxRegion& region);
	79	virtual bool DoIntersect(const wxRegion& region);
	80	virtual bool DoSubtract(const wxRegion& region);
	81	virtual bool DoXor(const wxRegion& region);
	82
	83	// common part of ctors for a rectangle region
	84	void InitRect(wxCoord x, wxCoord y, wxCoord w, wxCoord h);
	85
	86	private:
	87	DECLARE_DYNAMIC_CLASS(wxRegion)
	88	};
	89
	90	// ----------------------------------------------------------------------------
	91	// wxRegionIterator: decomposes a region into rectangles
	92	// ----------------------------------------------------------------------------
	93
	94	class WXDLLIMPEXP_CORE wxRegionIterator: public wxObject
	95	{
	96	public:
	97	wxRegionIterator();
	98	wxRegionIterator(const wxRegion& region);
	99	wxRegionIterator(const wxRegionIterator& ri) : wxObject(ri) { Init(); *this = ri; }
	100	~wxRegionIterator();
	101
	102	wxRegionIterator& operator=(const wxRegionIterator& ri);
	103
	104	void Reset() { m_current = 0u; }
	105	void Reset(const wxRegion& region);
	106
	107	bool HaveRects() const;
	108	operator bool () const { return HaveRects(); }
	109
	110	wxRegionIterator& operator ++ ();
	111	wxRegionIterator operator ++ (int);
	112
	113	wxCoord GetX() const;
	114	wxCoord GetY() const;
	115	wxCoord GetW() const;
	116	wxCoord GetWidth() const { return GetW(); }
	117	wxCoord GetH() const;
	118	wxCoord GetHeight() const { return GetH(); }
	119	wxRect GetRect() const;
	120
	121	private:
	122	void Init();
	123	void CreateRects( const wxRegion& r );
	124
	125	size_t m_current;
	126	wxRegion m_region;
	127
	128	wxRect *m_rects;
	129	size_t m_numRects;
	130
	131	private:
	132	DECLARE_DYNAMIC_CLASS(wxRegionIterator)
	133	};
	134
	135
	136	#endif
	137	// _WX_GTK_REGION_H_