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Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: wx/gtk/region.h
	3	// Purpose:
	4	// Author: Robert Roebling
	5	// Copyright: (c) 1998 Robert Roebling
	6	// Licence: wxWindows licence
	7	/////////////////////////////////////////////////////////////////////////////
	8
	9	#ifndef _WX_GTK_REGION_H_
	10	#define _WX_GTK_REGION_H_
	11
	12	#ifdef __WXGTK3__
	13	typedef struct _cairo_region cairo_region_t;
	14	#endif
	15
	16	// ----------------------------------------------------------------------------
	17	// wxRegion
	18	// ----------------------------------------------------------------------------
	19
	20	class WXDLLIMPEXP_CORE wxRegion : public wxRegionBase
	21	{
	22	public:
	23	wxRegion() { }
	24
	25	wxRegion( wxCoord x, wxCoord y, wxCoord w, wxCoord h )
	26	{
	27	InitRect(x, y, w, h);
	28	}
	29
	30	wxRegion( const wxPoint& topLeft, const wxPoint& bottomRight )
	31	{
	32	InitRect(topLeft.x, topLeft.y,
	33	bottomRight.x - topLeft.x, bottomRight.y - topLeft.y);
	34	}
	35
	36	wxRegion( const wxRect& rect )
	37	{
	38	InitRect(rect.x, rect.y, rect.width, rect.height);
	39	}
	40
	41	wxRegion( size_t n, const wxPoint *points,
	42	wxPolygonFillMode fillStyle = wxODDEVEN_RULE );
	43
	44	#if wxUSE_IMAGE
	45	wxRegion( const wxBitmap& bmp)
	46	{
	47	Union(bmp);
	48	}
	49	wxRegion( const wxBitmap& bmp,
	50	const wxColour& transColour, int tolerance = 0)
	51	{
	52	Union(bmp, transColour, tolerance);
	53	}
	54	#endif // wxUSE_IMAGE
	55
	56	virtual ~wxRegion();
	57
	58	// wxRegionBase methods
	59	virtual void Clear();
	60	virtual bool IsEmpty() const;
	61
	62	#ifdef __WXGTK3__
	63	cairo_region_t* GetRegion() const;
	64	#else
	65	wxRegion(const GdkRegion* region);
	66	GdkRegion *GetRegion() const;
	67	#endif
	68
	69	protected:
	70	virtual wxGDIRefData *CreateGDIRefData() const;
	71	virtual wxGDIRefData CloneGDIRefData(const wxGDIRefData data) const;
	72
	73	// wxRegionBase pure virtuals
	74	virtual bool DoIsEqual(const wxRegion& region) const;
	75	virtual bool DoGetBox(wxCoord& x, wxCoord& y, wxCoord& w, wxCoord& h) const;
	76	virtual wxRegionContain DoContainsPoint(wxCoord x, wxCoord y) const;
	77	virtual wxRegionContain DoContainsRect(const wxRect& rect) const;
	78
	79	virtual bool DoOffset(wxCoord x, wxCoord y);
	80	virtual bool DoUnionWithRect(const wxRect& rect);
	81	virtual bool DoUnionWithRegion(const wxRegion& region);
	82	virtual bool DoIntersect(const wxRegion& region);
	83	virtual bool DoSubtract(const wxRegion& region);
	84	virtual bool DoXor(const wxRegion& region);
	85
	86	// common part of ctors for a rectangle region
	87	void InitRect(wxCoord x, wxCoord y, wxCoord w, wxCoord h);
	88
	89	private:
	90	DECLARE_DYNAMIC_CLASS(wxRegion)
	91	};
	92
	93	// ----------------------------------------------------------------------------
	94	// wxRegionIterator: decomposes a region into rectangles
	95	// ----------------------------------------------------------------------------
	96
	97	class WXDLLIMPEXP_CORE wxRegionIterator: public wxObject
	98	{
	99	public:
	100	wxRegionIterator();
	101	wxRegionIterator(const wxRegion& region);
	102	wxRegionIterator(const wxRegionIterator& ri) : wxObject(ri) { Init(); *this = ri; }
	103	~wxRegionIterator();
	104
	105	wxRegionIterator& operator=(const wxRegionIterator& ri);
	106
	107	void Reset() { m_current = 0u; }
	108	void Reset(const wxRegion& region);
	109
	110	bool HaveRects() const;
	111	operator bool () const { return HaveRects(); }
	112
	113	wxRegionIterator& operator ++ ();
	114	wxRegionIterator operator ++ (int);
	115
	116	wxCoord GetX() const;
	117	wxCoord GetY() const;
	118	wxCoord GetW() const;
	119	wxCoord GetWidth() const { return GetW(); }
	120	wxCoord GetH() const;
	121	wxCoord GetHeight() const { return GetH(); }
	122	wxRect GetRect() const;
	123
	124	private:
	125	void Init();
	126	void CreateRects( const wxRegion& r );
	127
	128	wxRegion m_region;
	129	wxRect *m_rects;
	130	int m_numRects;
	131	int m_current;
	132
	133	DECLARE_DYNAMIC_CLASS(wxRegionIterator)
	134	};
	135
	136
	137	#endif
	138	// _WX_GTK_REGION_H_