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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: colour.cpp | |
3 | // Purpose: | |
4 | // Author: Robert Roebling | |
5 | // Id: $Id$ | |
6 | // Copyright: (c) 1998 Robert Roebling | |
7 | // Licence: wxWindows licence | |
8 | ///////////////////////////////////////////////////////////////////////////// | |
9 | ||
10 | ||
11 | #ifdef __GNUG__ | |
12 | #pragma implementation "colour.h" | |
13 | #endif | |
14 | ||
15 | #include "wx/gdicmn.h" | |
16 | ||
17 | #include <gdk/gdk.h> | |
18 | #include <gdk/gdkprivate.h> | |
19 | ||
20 | //----------------------------------------------------------------------------- | |
21 | // wxColour | |
22 | //----------------------------------------------------------------------------- | |
23 | ||
24 | class wxColourRefData: public wxObjectRefData | |
25 | { | |
26 | public: | |
27 | ||
28 | wxColourRefData(); | |
29 | ~wxColourRefData(); | |
30 | void FreeColour(); | |
31 | ||
32 | GdkColor m_color; | |
33 | GdkColormap *m_colormap; | |
34 | bool m_hasPixel; | |
35 | ||
36 | friend wxColour; | |
37 | }; | |
38 | ||
39 | wxColourRefData::wxColourRefData() | |
40 | { | |
41 | m_color.red = 0; | |
42 | m_color.green = 0; | |
43 | m_color.blue = 0; | |
44 | m_color.pixel = 0; | |
45 | m_colormap = (GdkColormap *) NULL; | |
46 | m_hasPixel = FALSE; | |
47 | } | |
48 | ||
49 | wxColourRefData::~wxColourRefData() | |
50 | { | |
51 | FreeColour(); | |
52 | } | |
53 | ||
54 | void wxColourRefData::FreeColour() | |
55 | { | |
56 | // if (m_hasPixel) gdk_colors_free( m_colormap, &m_color, 1, 0 ); | |
57 | } | |
58 | ||
59 | //----------------------------------------------------------------------------- | |
60 | ||
61 | #define M_COLDATA ((wxColourRefData *)m_refData) | |
62 | ||
63 | #define SHIFT (8*(sizeof(short int)-sizeof(char))) | |
64 | ||
65 | IMPLEMENT_DYNAMIC_CLASS(wxColour,wxGDIObject) | |
66 | ||
67 | wxColour::wxColour() | |
68 | { | |
69 | } | |
70 | ||
71 | wxColour::wxColour( unsigned char red, unsigned char green, unsigned char blue ) | |
72 | { | |
73 | m_refData = new wxColourRefData(); | |
74 | M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT; | |
75 | M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT; | |
76 | M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT; | |
77 | M_COLDATA->m_color.pixel = 0; | |
78 | } | |
79 | ||
80 | void wxColour::InitFromName( const wxString &colourName ) | |
81 | { | |
82 | wxNode *node = (wxNode *) NULL; | |
83 | if ( (wxTheColourDatabase) && (node = wxTheColourDatabase->Find(colourName)) ) | |
84 | { | |
85 | wxColour *col = (wxColour*)node->Data(); | |
86 | UnRef(); | |
87 | if (col) Ref( *col ); | |
88 | } | |
89 | else | |
90 | { | |
91 | m_refData = new wxColourRefData(); | |
92 | if (!gdk_color_parse( colourName.mb_str(), &M_COLDATA->m_color )) | |
93 | { | |
94 | wxFAIL_MSG( wxT("wxColour: couldn't find colour") ); | |
95 | wxPrintf( wxT("Colourname %s.\n"), WXSTRINGCAST colourName ); | |
96 | ||
97 | delete m_refData; | |
98 | m_refData = (wxObjectRefData *) NULL; | |
99 | } | |
100 | } | |
101 | } | |
102 | ||
103 | wxColour::wxColour( const wxColour& col ) | |
104 | { | |
105 | Ref( col ); | |
106 | } | |
107 | ||
108 | wxColour::~wxColour() | |
109 | { | |
110 | } | |
111 | ||
112 | wxColour& wxColour::operator = ( const wxColour& col ) | |
113 | { | |
114 | if (*this == col) return (*this); | |
115 | Ref( col ); | |
116 | return *this; | |
117 | } | |
118 | ||
119 | bool wxColour::operator == ( const wxColour& col ) const | |
120 | { | |
121 | if (m_refData == col.m_refData) return TRUE; | |
122 | ||
123 | if (!m_refData) return FALSE; | |
124 | if (!col.m_refData) return FALSE; | |
125 | ||
126 | GdkColor *own = &(((wxColourRefData*)m_refData)->m_color); | |
127 | GdkColor *other = &(((wxColourRefData*)col.m_refData)->m_color); | |
128 | if (own->red != other->red) return FALSE; | |
129 | if (own->blue != other->blue) return FALSE; | |
130 | if (own->green != other->green) return FALSE; | |
131 | ||
132 | return TRUE; | |
133 | } | |
134 | ||
135 | bool wxColour::operator != ( const wxColour& col) const | |
136 | { | |
137 | return m_refData != col.m_refData; | |
138 | } | |
139 | ||
140 | void wxColour::Set( unsigned char red, unsigned char green, unsigned char blue ) | |
141 | { | |
142 | UnRef(); | |
143 | m_refData = new wxColourRefData(); | |
144 | M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT; | |
145 | M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT; | |
146 | M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT; | |
147 | M_COLDATA->m_color.pixel = 0; | |
148 | } | |
149 | ||
150 | unsigned char wxColour::Red() const | |
151 | { | |
152 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); | |
153 | ||
154 | return (unsigned char)(M_COLDATA->m_color.red >> SHIFT); | |
155 | } | |
156 | ||
157 | unsigned char wxColour::Green() const | |
158 | { | |
159 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); | |
160 | ||
161 | return (unsigned char)(M_COLDATA->m_color.green >> SHIFT); | |
162 | } | |
163 | ||
164 | unsigned char wxColour::Blue() const | |
165 | { | |
166 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); | |
167 | ||
168 | return (unsigned char)(M_COLDATA->m_color.blue >> SHIFT); | |
169 | } | |
170 | ||
171 | bool wxColour::Ok() const | |
172 | { | |
173 | return (m_refData != NULL); | |
174 | } | |
175 | ||
176 | void wxColour::CalcPixel( GdkColormap *cmap ) | |
177 | { | |
178 | if (!Ok()) return; | |
179 | ||
180 | if ((M_COLDATA->m_hasPixel) && (M_COLDATA->m_colormap == cmap)) return; | |
181 | ||
182 | M_COLDATA->FreeColour(); | |
183 | ||
184 | GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) cmap; | |
185 | if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) || | |
186 | (private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR)) | |
187 | { | |
188 | GdkColor *colors = cmap->colors; | |
189 | int max = 3 * (65536); | |
190 | int index = -1; | |
191 | ||
192 | for (int i = 0; i < cmap->size; i++) | |
193 | { | |
194 | int rdiff = (M_COLDATA->m_color.red - colors[i].red); | |
195 | int gdiff = (M_COLDATA->m_color.green - colors[i].green); | |
196 | int bdiff = (M_COLDATA->m_color.blue - colors[i].blue); | |
197 | int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff); | |
198 | if (sum < max) { index = i; max = sum; } | |
199 | } | |
200 | ||
201 | M_COLDATA->m_hasPixel = TRUE; | |
202 | M_COLDATA->m_color.pixel = index; | |
203 | } | |
204 | else | |
205 | { | |
206 | M_COLDATA->m_hasPixel = gdk_color_alloc( cmap, &M_COLDATA->m_color ); | |
207 | } | |
208 | ||
209 | M_COLDATA->m_colormap = cmap; | |
210 | } | |
211 | ||
212 | int wxColour::GetPixel() const | |
213 | { | |
214 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); | |
215 | ||
216 | return M_COLDATA->m_color.pixel; | |
217 | } | |
218 | ||
219 | GdkColor *wxColour::GetColor() const | |
220 | { | |
221 | wxCHECK_MSG( Ok(), (GdkColor *) NULL, wxT("invalid colour") ); | |
222 | ||
223 | return &M_COLDATA->m_color; | |
224 | } | |
225 | ||
226 |