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