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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: src/x11/colour.cpp | |
3 | // Purpose: wxColour class | |
4 | // Author: Julian Smart, Robert Roebling | |
5 | // Modified by: | |
6 | // Created: 17/09/98 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Julian Smart, Robert Roebling | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | // For compilers that support precompilation, includes "wx.h". | |
13 | #include "wx/wxprec.h" | |
14 | ||
15 | #include "wx/colour.h" | |
16 | ||
17 | #ifndef WX_PRECOMP | |
18 | #include "wx/app.h" | |
19 | #include "wx/gdicmn.h" | |
20 | #endif | |
21 | ||
22 | #include "wx/x11/private.h" | |
23 | ||
24 | //----------------------------------------------------------------------------- | |
25 | // wxColour | |
26 | //----------------------------------------------------------------------------- | |
27 | ||
28 | class wxColourRefData : public wxGDIRefData | |
29 | { | |
30 | public: | |
31 | wxColourRefData() | |
32 | { | |
33 | m_color.red = 0; | |
34 | m_color.green = 0; | |
35 | m_color.blue = 0; | |
36 | m_color.pixel = 0; | |
37 | m_colormap = NULL; | |
38 | m_hasPixel = false; | |
39 | } | |
40 | ||
41 | wxColourRefData(const wxColourRefData& data) | |
42 | { | |
43 | m_color = data.m_color; | |
44 | m_colormap = data.m_colormap; | |
45 | m_hasPixel = data.m_hasPixel; | |
46 | } | |
47 | ||
48 | virtual ~wxColourRefData() | |
49 | { | |
50 | FreeColour(); | |
51 | } | |
52 | ||
53 | bool operator==(const wxColourRefData& data) const | |
54 | { | |
55 | return (m_colormap == data.m_colormap && | |
56 | m_hasPixel == data.m_hasPixel && | |
57 | m_color.red == data.m_color.red && | |
58 | m_color.green == data.m_color.green && | |
59 | m_color.blue == data.m_color.blue && | |
60 | m_color.pixel == data.m_color.pixel); | |
61 | } | |
62 | ||
63 | void FreeColour(); | |
64 | void AllocColour( WXColormap cmap ); | |
65 | ||
66 | XColor m_color; | |
67 | WXColormap m_colormap; | |
68 | bool m_hasPixel; | |
69 | ||
70 | friend class wxColour; | |
71 | ||
72 | // reference counter for systems with <= 8-Bit display | |
73 | static unsigned short colMapAllocCounter[ 256 ]; | |
74 | }; | |
75 | ||
76 | unsigned short wxColourRefData::colMapAllocCounter[ 256 ] = | |
77 | { | |
78 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
79 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
80 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
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 | |
91 | }; | |
92 | ||
93 | void wxColourRefData::FreeColour() | |
94 | { | |
95 | if (!m_colormap) | |
96 | return; | |
97 | #if !wxUSE_NANOX | |
98 | if ( wxTheApp && | |
99 | (wxTheApp->m_visualInfo->m_visualType == GrayScale || | |
100 | wxTheApp->m_visualInfo->m_visualType == PseudoColor) ) | |
101 | { | |
102 | int idx = m_color.pixel; | |
103 | colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] - 1; | |
104 | ||
105 | if (colMapAllocCounter[ idx ] == 0) | |
106 | { | |
107 | unsigned long pixel = m_color.pixel; | |
108 | XFreeColors( wxGlobalDisplay(), (Colormap) m_colormap, &pixel, 1, 0 ); | |
109 | } | |
110 | } | |
111 | #endif | |
112 | } | |
113 | ||
114 | void wxColourRefData::AllocColour( WXColormap cmap ) | |
115 | { | |
116 | if (m_hasPixel && (m_colormap == cmap)) | |
117 | return; | |
118 | ||
119 | FreeColour(); | |
120 | ||
121 | #if !wxUSE_NANOX | |
122 | if ((wxTheApp->m_visualInfo->m_visualType == GrayScale) || | |
123 | (wxTheApp->m_visualInfo->m_visualType == PseudoColor)) | |
124 | { | |
125 | m_hasPixel = XAllocColor( wxGlobalDisplay(), (Colormap) cmap, &m_color ); | |
126 | int idx = m_color.pixel; | |
127 | colMapAllocCounter[ idx ] = colMapAllocCounter[ idx ] + 1; | |
128 | } | |
129 | else | |
130 | #endif | |
131 | { | |
132 | m_hasPixel = XAllocColor( wxGlobalDisplay(), (Colormap) cmap, &m_color ); | |
133 | } | |
134 | ||
135 | m_colormap = cmap; | |
136 | } | |
137 | ||
138 | //----------------------------------------------------------------------------- | |
139 | ||
140 | #define M_COLDATA ((wxColourRefData *)m_refData) | |
141 | ||
142 | #define SHIFT (8*(sizeof(short int)-sizeof(char))) | |
143 | ||
144 | wxColour::~wxColour() | |
145 | { | |
146 | } | |
147 | ||
148 | bool wxColour::operator == ( const wxColour& col ) const | |
149 | { | |
150 | if (m_refData == col.m_refData) return true; | |
151 | ||
152 | if (!m_refData || !col.m_refData) return false; | |
153 | ||
154 | XColor *own = &(((wxColourRefData*)m_refData)->m_color); | |
155 | XColor *other = &(((wxColourRefData*)col.m_refData)->m_color); | |
156 | ||
157 | return (own->red == other->red) | |
158 | && (own->green == other->green) | |
159 | && (own->blue == other->blue) ; | |
160 | ||
161 | } | |
162 | ||
163 | wxGDIRefData *wxColour::CreateGDIRefData() const | |
164 | { | |
165 | return new wxColourRefData; | |
166 | } | |
167 | ||
168 | wxGDIRefData *wxColour::CloneGDIRefData(const wxGDIRefData *data) const | |
169 | { | |
170 | return new wxColourRefData(*(wxColourRefData *)data); | |
171 | } | |
172 | ||
173 | void wxColour::InitRGBA(unsigned char red, unsigned char green, unsigned char blue, | |
174 | unsigned char WXUNUSED(alpha)) | |
175 | { | |
176 | AllocExclusive(); | |
177 | ||
178 | #if wxUSE_NANOX | |
179 | M_COLDATA->m_color.red = ((unsigned short)red) ; | |
180 | M_COLDATA->m_color.green = ((unsigned short)green) ; | |
181 | M_COLDATA->m_color.blue = ((unsigned short)blue) ; | |
182 | #else | |
183 | M_COLDATA->m_color.red = ((unsigned short)red) << SHIFT; | |
184 | M_COLDATA->m_color.green = ((unsigned short)green) << SHIFT; | |
185 | M_COLDATA->m_color.blue = ((unsigned short)blue) << SHIFT; | |
186 | #endif | |
187 | M_COLDATA->m_color.pixel = 0; | |
188 | } | |
189 | ||
190 | unsigned char wxColour::Red() const | |
191 | { | |
192 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); | |
193 | ||
194 | #if wxUSE_NANOX | |
195 | return (unsigned char) M_COLDATA->m_color.red ; | |
196 | #else | |
197 | return (unsigned char)(M_COLDATA->m_color.red >> SHIFT); | |
198 | #endif | |
199 | } | |
200 | ||
201 | unsigned char wxColour::Green() const | |
202 | { | |
203 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); | |
204 | ||
205 | #if wxUSE_NANOX | |
206 | return (unsigned char) M_COLDATA->m_color.green ; | |
207 | #else | |
208 | return (unsigned char)(M_COLDATA->m_color.green >> SHIFT); | |
209 | #endif | |
210 | } | |
211 | ||
212 | unsigned char wxColour::Blue() const | |
213 | { | |
214 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); | |
215 | ||
216 | #if wxUSE_NANOX | |
217 | return (unsigned char) M_COLDATA->m_color.blue ; | |
218 | #else | |
219 | return (unsigned char)(M_COLDATA->m_color.blue >> SHIFT); | |
220 | #endif | |
221 | } | |
222 | ||
223 | void wxColour::CalcPixel( WXColormap cmap ) | |
224 | { | |
225 | wxCHECK_RET( Ok(), wxT("invalid colour") ); | |
226 | ||
227 | wxCHECK_RET( cmap, wxT("invalid colormap") ); | |
228 | ||
229 | M_COLDATA->AllocColour( cmap ); | |
230 | } | |
231 | ||
232 | unsigned long wxColour::GetPixel() const | |
233 | { | |
234 | wxCHECK_MSG( Ok(), 0, wxT("invalid colour") ); | |
235 | ||
236 | return M_COLDATA->m_color.pixel; | |
237 | } | |
238 | ||
239 | WXColor *wxColour::GetColor() const | |
240 | { | |
241 | wxCHECK_MSG( Ok(), NULL, wxT("invalid colour") ); | |
242 | ||
243 | return (WXColor*) &M_COLDATA->m_color; | |
244 | } | |
245 | ||
246 | bool wxColour::FromString(const wxString& name) | |
247 | { | |
248 | Display *dpy = wxGlobalDisplay(); | |
249 | WXColormap colormap = wxTheApp->GetMainColormap( dpy ); | |
250 | XColor xcol; | |
251 | if ( XParseColor( dpy, (Colormap)colormap, name.mbc_str(), &xcol ) ) | |
252 | { | |
253 | UnRef(); | |
254 | ||
255 | m_refData = new wxColourRefData; | |
256 | M_COLDATA->m_colormap = colormap; | |
257 | M_COLDATA->m_color = xcol; | |
258 | return true; | |
259 | } | |
260 | ||
261 | return wxColourBase::FromString(name); | |
262 | } |