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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 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) | |
12 | #pragma implementation "colour.h" | |
13 | #endif | |
14 | ||
15 | // For compilers that support precompilation, includes "wx.h". | |
16 | #include "wx/wxprec.h" | |
17 | ||
18 | #include "wx/gdicmn.h" | |
19 | #include "wx/colour.h" | |
20 | #include "wx/gtk/private.h" | |
21 | ||
22 | #include <gdk/gdk.h> | |
23 | #include <gdk/gdkx.h> | |
24 | #include <gdk/gdkprivate.h> | |
25 | ||
26 | //----------------------------------------------------------------------------- | |
27 | // wxColour | |
28 | //----------------------------------------------------------------------------- | |
29 | ||
30 | class wxColourRefData: public wxObjectRefData | |
31 | { | |
32 | public: | |
33 | wxColourRefData() | |
34 | { | |
35 | m_color.red = 0; | |
36 | m_color.green = 0; | |
37 | m_color.blue = 0; | |
38 | m_color.pixel = 0; | |
39 | m_colormap = (GdkColormap *) NULL; | |
40 | m_hasPixel = FALSE; | |
41 | } | |
42 | ||
43 | wxColourRefData(const wxColourRefData& data) | |
44 | : wxObjectRefData() | |
45 | { | |
46 | m_color = data.m_color; | |
47 | m_colormap = data.m_colormap; | |
48 | m_hasPixel = data.m_hasPixel; | |
49 | } | |
50 | ||
51 | ~wxColourRefData() | |
52 | { | |
53 | FreeColour(); | |
54 | } | |
55 | ||
56 | bool operator == (const wxColourRefData& data) const | |
57 | { | |
58 | return (m_colormap == data.m_colormap && | |
59 | m_hasPixel == data.m_hasPixel && | |
60 | m_color.red == data.m_color.red && | |
61 | m_color.green == data.m_color.green && | |
62 | m_color.blue == data.m_color.blue && | |
63 | m_color.pixel == data.m_color.pixel); | |
64 | } | |
65 | ||
66 | void FreeColour(); | |
67 | void AllocColour( GdkColormap* cmap ); | |
68 | ||
69 | GdkColor m_color; | |
70 | GdkColormap *m_colormap; | |
71 | bool m_hasPixel; | |
72 | ||
73 | friend class wxColour; | |
74 | ||
75 | // reference counter for systems with <= 8-Bit display | |
76 | static gushort colMapAllocCounter[ 256 ]; | |
77 | }; | |
78 | ||
79 | gushort wxColourRefData::colMapAllocCounter[ 256 ] = | |
80 | { | |
81 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
82 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
83 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
84 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
85 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
86 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
87 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
88 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
89 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
90 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
91 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
92 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
93 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 | |
94 | }; | |
95 | ||
96 | void wxColourRefData::FreeColour() | |
97 | { | |
98 | if (m_colormap) | |
99 | { | |
100 | #ifdef __WXGTK20__ | |
101 | if ((m_colormap->visual->type == GDK_VISUAL_GRAYSCALE) || | |
102 | (m_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR)) | |
103 | #else | |
104 | GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) m_colormap; | |
105 | if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) || | |
106 | (private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR)) | |
107 | #endif | |
108 | { | |
109 | int idx = m_color.pixel; | |
110 | colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] - 1; | |
111 | ||
112 | if (colMapAllocCounter[ idx ] == 0) | |
113 | gdk_colormap_free_colors( m_colormap, &m_color, 1 ); | |
114 | } | |
115 | } | |
116 | } | |
117 | ||
118 | void wxColourRefData::AllocColour( GdkColormap *cmap ) | |
119 | { | |
120 | if (m_hasPixel && (m_colormap == cmap)) | |
121 | return; | |
122 | ||
123 | FreeColour(); | |
124 | ||
125 | #ifdef __WXGTK20__ | |
126 | if ( (cmap->visual->type == GDK_VISUAL_GRAYSCALE) || | |
127 | (cmap->visual->type == GDK_VISUAL_PSEUDO_COLOR) ) | |
128 | #else | |
129 | GdkColormapPrivate *private_colormap = (GdkColormapPrivate*) cmap; | |
130 | if ((private_colormap->visual->type == GDK_VISUAL_GRAYSCALE) || | |
131 | (private_colormap->visual->type == GDK_VISUAL_PSEUDO_COLOR)) | |
132 | #endif | |
133 | { | |
134 | m_hasPixel = gdk_colormap_alloc_color( cmap, &m_color, FALSE, TRUE ); | |
135 | int idx = m_color.pixel; | |
136 | colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] + 1; | |
137 | } | |
138 | else | |
139 | { | |
140 | m_hasPixel = gdk_color_alloc( cmap, &m_color ); | |
141 | } | |
142 | m_colormap = cmap; | |
143 | } | |
144 | ||
145 | //----------------------------------------------------------------------------- | |
146 | ||
147 | #define M_COLDATA ((wxColourRefData *)m_refData) | |
148 | ||
149 | #define SHIFT (8*(sizeof(short int)-sizeof(char))) | |
150 | ||
151 | IMPLEMENT_DYNAMIC_CLASS(wxColour,wxGDIObject) | |
152 | ||
153 | wxColour::wxColour( unsigned char red, unsigned char green, unsigned char blue ) | |
154 | { | |
155 | m_refData = new wxColourRefData(); | |
156 | M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT; | |
157 | M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT; | |
158 | M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT; | |
159 | M_COLDATA->m_color.pixel = 0; | |
160 | } | |
161 | ||
162 | ||
163 | ||
164 | void wxColour::InitFromName( const wxString &colourName ) | |
165 | { | |
166 | wxColour* col = NULL; | |
167 | if ( (wxTheColourDatabase) && (col = wxTheColourDatabase->FindColourNoAdd(colourName)) ) | |
168 | { | |
169 | UnRef(); | |
170 | if (col) Ref( *col ); | |
171 | } | |
172 | else | |
173 | { | |
174 | m_refData = new wxColourRefData(); | |
175 | ||
176 | if (!gdk_color_parse( wxGTK_CONV( colourName ), &M_COLDATA->m_color )) | |
177 | { | |
178 | // VZ: asserts are good in general but this one is triggered by | |
179 | // calling wxColourDatabase::FindColour() with an | |
180 | // unrecognized colour name and this can't be avoided from the | |
181 | // user code, so don't give it here | |
182 | // | |
183 | // a better solution would be to changed code in FindColour() | |
184 | ||
185 | //wxFAIL_MSG( wxT("wxColour: couldn't find colour") ); | |
186 | ||
187 | delete m_refData; | |
188 | m_refData = (wxObjectRefData *) NULL; | |
189 | } | |
190 | } | |
191 | } | |
192 | ||
193 | wxColour::~wxColour() | |
194 | { | |
195 | } | |
196 | ||
197 | bool wxColour::operator == ( const wxColour& col ) const | |
198 | { | |
199 | if (m_refData == col.m_refData) return TRUE; | |
200 | ||
201 | if (!m_refData || !col.m_refData) return FALSE; | |
202 | ||
203 | GdkColor *own = &(((wxColourRefData*)m_refData)->m_color); | |
204 | GdkColor *other = &(((wxColourRefData*)col.m_refData)->m_color); | |
205 | if (own->red != other->red) return FALSE; | |
206 | if (own->blue != other->blue) return FALSE; | |
207 | if (own->green != other->green) return FALSE; | |
208 | ||
209 | return TRUE; | |
210 | } | |
211 | ||
212 | wxObjectRefData *wxColour::CreateRefData() const | |
213 | { | |
214 | return new wxColourRefData; | |
215 | } | |
216 | ||
217 | wxObjectRefData *wxColour::CloneRefData(const wxObjectRefData *data) const | |
218 | { | |
219 | return new wxColourRefData(*(wxColourRefData *)data); | |
220 | } | |
221 | ||
222 | void wxColour::Set( unsigned char red, unsigned char green, unsigned char blue ) | |
223 | { | |
224 | AllocExclusive(); | |
225 | ||
226 | M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT; | |
227 | M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT; | |
228 | M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT; | |
229 | M_COLDATA->m_color.pixel = 0; | |
230 | ||
231 | M_COLDATA->m_colormap = (GdkColormap*) NULL; | |
232 | M_COLDATA->m_hasPixel = FALSE; | |
233 | } | |
234 | ||
235 | unsigned char wxColour::Red() const | |
236 | { | |
237 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); | |
238 | ||
239 | return (unsigned char)(M_COLDATA->m_color.red >> SHIFT); | |
240 | } | |
241 | ||
242 | unsigned char wxColour::Green() const | |
243 | { | |
244 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); | |
245 | ||
246 | return (unsigned char)(M_COLDATA->m_color.green >> SHIFT); | |
247 | } | |
248 | ||
249 | unsigned char wxColour::Blue() const | |
250 | { | |
251 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); | |
252 | ||
253 | return (unsigned char)(M_COLDATA->m_color.blue >> SHIFT); | |
254 | } | |
255 | ||
256 | void wxColour::CalcPixel( GdkColormap *cmap ) | |
257 | { | |
258 | if (!Ok()) return; | |
259 | ||
260 | M_COLDATA->AllocColour( cmap ); | |
261 | } | |
262 | ||
263 | int wxColour::GetPixel() const | |
264 | { | |
265 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); | |
266 | ||
267 | return M_COLDATA->m_color.pixel; | |
268 | } | |
269 | ||
270 | GdkColor *wxColour::GetColor() const | |
271 | { | |
272 | wxCHECK_MSG( Ok(), (GdkColor *) NULL, wxT("invalid colour") ); | |
273 | ||
274 | return &M_COLDATA->m_color; | |
275 | } | |
276 | ||
277 |