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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 __WXGTK3__
	14	typedef struct _cairo_region cairo_region_t;
	15	#endif
	16
	17	// ----------------------------------------------------------------------------
	18	// wxRegion
	19	// ----------------------------------------------------------------------------
	20
	21	class WXDLLIMPEXP_CORE wxRegion : public wxRegionBase
	22	{
	23	public:
	24	wxRegion() { }
	25
	26	wxRegion( wxCoord x, wxCoord y, wxCoord w, wxCoord h )
	27	{
	28	InitRect(x, y, w, h);
	29	}
	30
	31	wxRegion( const wxPoint& topLeft, const wxPoint& bottomRight )
	32	{
	33	InitRect(topLeft.x, topLeft.y,
	34	bottomRight.x - topLeft.x, bottomRight.y - topLeft.y);
	35	}
	36
	37	wxRegion( const wxRect& rect )
	38	{
	39	InitRect(rect.x, rect.y, rect.width, rect.height);
	40	}
	41
	42	wxRegion( size_t n, const wxPoint *points,
	43	wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
	44
	45	#if wxUSE_IMAGE
	46	wxRegion( const wxBitmap& bmp)
	47	{
	48	Union(bmp);
	49	}
	50	wxRegion( const wxBitmap& bmp,
	51	const wxColour& transColour, int tolerance = 0)
	52	{
	53	Union(bmp, transColour, tolerance);
	54	}
	55	#endif // wxUSE_IMAGE
	56
	57	virtual ~wxRegion();
	58
	59	// wxRegionBase methods
	60	virtual void Clear();
	61	virtual bool IsEmpty() const;
	62
	63	#ifdef __WXGTK3__
	64	cairo_region_t* GetRegion() const;
	65	#else
	66	wxRegion(const GdkRegion* region);
	67	GdkRegion *GetRegion() const;
	68	#endif
	69
	70	protected:
	71	virtual wxGDIRefData *CreateGDIRefData() const;
	72	virtual wxGDIRefData CloneGDIRefData(const wxGDIRefData data) const;
	73
	74	// wxRegionBase pure virtuals
	75	virtual bool DoIsEqual(const wxRegion& region) const;
	76	virtual bool DoGetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const;
	77	virtual wxRegionContain DoContainsPoint(wxCoord x, wxCoord y) const;
	78	virtual wxRegionContain DoContainsRect(const wxRect& rect) const;
	79
	80	virtual bool DoOffset(wxCoord x, wxCoord y);
	81	virtual bool DoUnionWithRect(const wxRect& rect);
	82	virtual bool DoUnionWithRegion(const wxRegion& region);
	83	virtual bool DoIntersect(const wxRegion& region);
	84	virtual bool DoSubtract(const wxRegion& region);
	85	virtual bool DoXor(const wxRegion& region);
	86
	87	// common part of ctors for a rectangle region
	88	void InitRect(wxCoord x, wxCoord y, wxCoord w, wxCoord h);
	89
	90	private:
	91	DECLARE_DYNAMIC_CLASS(wxRegion)
	92	};
	93
	94	// ----------------------------------------------------------------------------
	95	// wxRegionIterator: decomposes a region into rectangles
	96	// ----------------------------------------------------------------------------
	97
	98	class WXDLLIMPEXP_CORE wxRegionIterator: public wxObject
	99	{
	100	public:
	101	wxRegionIterator();
	102	wxRegionIterator(const wxRegion& region);
	103	wxRegionIterator(const wxRegionIterator& ri) : wxObject(ri) { Init(); *this = ri; }
	104	~wxRegionIterator();
	105
	106	wxRegionIterator& operator=(const wxRegionIterator& ri);
	107
	108	void Reset() { m_current = 0u; }
	109	void Reset(const wxRegion& region);
	110
	111	bool HaveRects() const;
	112	operator bool () const { return HaveRects(); }
	113
	114	wxRegionIterator& operator ++ ();
	115	wxRegionIterator operator ++ (int);
	116
	117	wxCoord GetX() const;
	118	wxCoord GetY() const;
	119	wxCoord GetW() const;
	120	wxCoord GetWidth() const { return GetW(); }
	121	wxCoord GetH() const;
	122	wxCoord GetHeight() const { return GetH(); }
	123	wxRect GetRect() const;
	124
	125	private:
	126	void Init();
	127	void CreateRects( const wxRegion& r );
	128
	129	wxRegion m_region;
	130	wxRect *m_rects;
	131	int m_numRects;
	132	int m_current;
	133
	134	DECLARE_DYNAMIC_CLASS(wxRegionIterator)
	135	};
	136
	137
	138	#endif
	139	// _WX_GTK_REGION_H_