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[wxWidgets.git] / include / wx / gtk / region.h
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c801d85f 1/////////////////////////////////////////////////////////////////////////////
5fc7ede9 2// Name: wx/gtk/region.h
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3// Purpose:
4// Author: Robert Roebling
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5// Id: $Id$
6// Copyright: (c) 1998 Robert Roebling
65571936 7// Licence: wxWindows licence
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8/////////////////////////////////////////////////////////////////////////////
9
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10#ifndef _WX_GTK_REGION_H_
11#define _WX_GTK_REGION_H_
c801d85f 12
1e6feb95 13// ----------------------------------------------------------------------------
c801d85f 14// wxRegion
1e6feb95 15// ----------------------------------------------------------------------------
c801d85f 16
8a16d737 17class WXDLLIMPEXP_CORE wxRegion : public wxRegionBase
c801d85f 18{
e1208c31 19public:
9fe4c99c 20 wxRegion() { }
1542ea39 21
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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 );
1542ea39 39
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40 wxRegion( const wxBitmap& bmp)
41 {
42 Union(bmp);
43 }
1542ea39 44 wxRegion( const wxBitmap& bmp,
85f6b408 45 const wxColour& transColour, int tolerance = 0)
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46 {
47 Union(bmp, transColour, tolerance);
48 }
49
d3c7fc99 50 virtual ~wxRegion();
c801d85f 51
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52 // wxRegionBase methods
53 virtual void Clear();
54 virtual bool IsEmpty() const;
1542ea39 55
e1208c31 56public:
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57 // Init with GdkRegion, set ref count to 2 so that
58 // the C++ class will not destroy the region!
59 wxRegion( GdkRegion *region );
1542ea39 60
07818da8 61 GdkRegion *GetRegion() const;
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62
63protected:
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64 // ref counting code
65 virtual wxObjectRefData *CreateRefData() const;
66 virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const;
1542ea39 67
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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
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81 // common part of ctors for a rectangle region
82 void InitRect(wxCoord x, wxCoord y, wxCoord w, wxCoord h);
83
e1208c31 84private:
777105f2 85 DECLARE_DYNAMIC_CLASS(wxRegion)
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86};
87
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88// ----------------------------------------------------------------------------
89// wxRegionIterator: decomposes a region into rectangles
90// ----------------------------------------------------------------------------
91
20123d49 92class WXDLLIMPEXP_CORE wxRegionIterator: public wxObject
8429bec1 93{
738f9e5a 94public:
07818da8 95 wxRegionIterator();
8429bec1 96 wxRegionIterator(const wxRegion& region);
ac7d3dd1 97 wxRegionIterator(const wxRegionIterator& ri) : wxObject(ri) { Init(); *this = ri; }
55ccdb93 98 ~wxRegionIterator();
8429bec1 99
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100 wxRegionIterator& operator=(const wxRegionIterator& ri);
101
6f2a55e3 102 void Reset() { m_current = 0u; }
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103 void Reset(const wxRegion& region);
104
07818da8 105 bool HaveRects() const;
2b5f62a0 106 operator bool () const { return HaveRects(); }
8429bec1 107
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108 wxRegionIterator& operator ++ ();
109 wxRegionIterator operator ++ (int);
8429bec1 110
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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(); }
1e6feb95 117 wxRect GetRect() const;
8429bec1 118
738f9e5a 119private:
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120 void Init();
121 void CreateRects( const wxRegion& r );
122
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123 size_t m_current;
124 wxRegion m_region;
738f9e5a 125
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126 wxRect *m_rects;
127 size_t m_numRects;
128
738f9e5a 129private:
777105f2 130 DECLARE_DYNAMIC_CLASS(wxRegionIterator)
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131};
132
133
c801d85f 134#endif
5fc7ede9 135 // _WX_GTK_REGION_H_