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1 | ///////////////////////////////////////////////////////////////////////////// |
2 | // Name: wx/dfb/region.h | |
3 | // Purpose: wxRegion class | |
4 | // Author: Vaclav Slavik | |
5 | // Created: 2006-08-08 | |
6 | // RCS-ID: $Id$ | |
7 | // Copyright: (c) 2006 REA Elektronik GmbH | |
8 | // Licence: wxWindows licence | |
9 | ///////////////////////////////////////////////////////////////////////////// | |
10 | ||
11 | #ifndef _WX_DFB_REGION_H_ | |
12 | #define _WX_DFB_REGION_H_ | |
13 | ||
14 | #include "wx/gdiobj.h" | |
15 | #include "wx/gdicmn.h" | |
16 | ||
17 | #warning "Move these to wx/region.h when common code is moved there" | |
18 | class WXDLLIMPEXP_CORE wxBitmap; | |
19 | class WXDLLIMPEXP_CORE wxColour; | |
20 | ||
21 | class WXDLLIMPEXP_CORE wxRegion : public wxGDIObject | |
22 | { | |
23 | ||
24 | public: | |
25 | wxRegion(wxCoord x, wxCoord y, wxCoord w, wxCoord h); | |
26 | wxRegion(const wxPoint& topLeft, const wxPoint& bottomRight); | |
27 | wxRegion(const wxRect& rect); | |
28 | wxRegion(const wxBitmap& bmp) | |
29 | { | |
30 | Union(bmp); | |
31 | } | |
32 | wxRegion(const wxBitmap& bmp, | |
33 | const wxColour& transColour, int tolerance = 0) | |
34 | { | |
35 | Union(bmp, transColour, tolerance); | |
36 | } | |
37 | ||
38 | wxRegion(); | |
39 | ~wxRegion(); | |
40 | ||
41 | #warning "FIXME: move this to common code? at least Ok()" | |
42 | bool Ok() const { return m_refData != NULL; } | |
43 | ||
44 | bool operator==(const wxRegion& region) const; | |
45 | bool operator!=(const wxRegion& region) const { return !(*this == region); } | |
46 | ||
47 | // Clear current region | |
48 | void Clear(); | |
49 | ||
50 | bool Offset(wxCoord x, wxCoord y); | |
51 | ||
52 | // Union rectangle or region with this. | |
53 | bool Union(wxCoord x, wxCoord y, wxCoord width, wxCoord height) | |
54 | { return Union(wxRect(x, y, width, height)); } | |
55 | bool Union(const wxRect& rect); | |
56 | bool Union(const wxRegion& region); | |
57 | ||
58 | // Intersect rectangle or region with this. | |
59 | bool Intersect(wxCoord x, wxCoord y, wxCoord width, wxCoord height) | |
60 | { return Intersect(wxRect(x, y, width, height)); } | |
61 | bool Intersect(const wxRect& rect); | |
62 | bool Intersect(const wxRegion& region); | |
63 | ||
64 | // Subtract rectangle or region from this: | |
65 | // Combines the parts of 'this' that are not part of the second region. | |
66 | bool Subtract(wxCoord x, wxCoord y, wxCoord width, wxCoord height) | |
67 | { return Subtract(wxRect(x, y, width, height)); } | |
68 | bool Subtract(const wxRect& rect); | |
69 | bool Subtract(const wxRegion& region); | |
70 | ||
71 | // XOR: the union of two combined regions except for any overlapping areas. | |
72 | bool Xor(wxCoord x, wxCoord y, wxCoord width, wxCoord height) | |
73 | { return Xor(wxRect(x, y, width, height)); } | |
74 | bool Xor(const wxRect& rect); | |
75 | bool Xor(const wxRegion& region); | |
76 | ||
77 | // Outer bounds of region | |
78 | void GetBox(wxCoord& x, wxCoord& y, wxCoord&w, wxCoord &h) const; | |
0a880a31 | 79 | wxRect GetBox() const; |
b3c86150 VS |
80 | |
81 | // Is region empty? | |
0a880a31 VS |
82 | bool Empty() const; |
83 | bool IsEmpty() const { return Empty(); } | |
b3c86150 VS |
84 | |
85 | // Does the region contain the point (x,y)? | |
86 | wxRegionContain Contains(wxCoord x, wxCoord y) const; | |
87 | // Does the region contain the point pt? | |
88 | wxRegionContain Contains(const wxPoint& pt) const | |
89 | { return Contains(pt.x, pt.y); } | |
90 | // Does the region contain the rectangle rect? | |
91 | wxRegionContain Contains(const wxRect& rect) const; | |
92 | // Does the region contain the rectangle (x, y, w, h)? | |
93 | wxRegionContain Contains(wxCoord x, wxCoord y, wxCoord w, wxCoord h) const | |
94 | { return Contains(wxRect(x, y, w, h)); } | |
95 | ||
96 | ||
97 | #warning "Move these union versions + ConvertToBitmap to wxRegionBase" | |
98 | // Convert the region to a B&W bitmap with the white pixels being inside | |
99 | // the region. | |
100 | wxBitmap ConvertToBitmap() const; | |
101 | ||
102 | // Use the non-transparent pixels of a wxBitmap for the region to combine | |
103 | // with this region. First version takes transparency from bitmap's mask, | |
104 | // second lets the user specify the colour to be treated as transparent | |
105 | // along with an optional tolerance value. | |
106 | // NOTE: implemented in common/rgncmn.cpp | |
107 | bool Union(const wxBitmap& bmp); | |
108 | bool Union(const wxBitmap& bmp, | |
109 | const wxColour& transColour, int tolerance = 0); | |
110 | ||
111 | // NB: implementation detail of DirectFB, should be removed if full | |
112 | // (i.e. not rect-only version is implemented) so that all code that | |
113 | // assumes region==rect breaks | |
114 | wxRect AsRect() const { return GetBox(); } | |
115 | ||
116 | protected: | |
117 | // ref counting code | |
118 | virtual wxObjectRefData *CreateRefData() const; | |
119 | virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const; | |
120 | ||
121 | friend class WXDLLIMPEXP_CORE wxRegionIterator; | |
122 | ||
123 | DECLARE_DYNAMIC_CLASS(wxRegion); | |
124 | }; | |
125 | ||
126 | ||
127 | class WXDLLIMPEXP_CORE wxRegionIterator : public wxObject | |
128 | { | |
129 | public: | |
130 | wxRegionIterator() {} | |
131 | wxRegionIterator(const wxRegion& region) { Reset(region); } | |
132 | ||
133 | void Reset() { m_rect = wxRect(); } | |
134 | void Reset(const wxRegion& region); | |
135 | ||
136 | bool HaveRects() const { return !m_rect.IsEmpty(); } | |
137 | operator bool() const { return HaveRects(); } | |
138 | ||
139 | wxRegionIterator& operator++(); | |
140 | wxRegionIterator operator++(int); | |
141 | ||
142 | wxCoord GetX() const { return m_rect.GetX(); } | |
143 | wxCoord GetY() const { return m_rect.GetY(); } | |
144 | wxCoord GetW() const { return m_rect.GetWidth(); } | |
145 | wxCoord GetWidth() const { return GetW(); } | |
146 | wxCoord GetH() const { return m_rect.GetHeight(); } | |
147 | wxCoord GetHeight() const { return GetH(); } | |
148 | wxRect GetRect() const { return m_rect; } | |
149 | ||
150 | private: | |
151 | wxRect m_rect; | |
152 | ||
153 | DECLARE_DYNAMIC_CLASS(wxRegionIterator); | |
154 | }; | |
155 | ||
156 | #endif // _WX_DFB_REGION_H_ |