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1 | ///////////////////////////////////////////////////////////////////////////// |
2 | // Name: palette.cpp | |
3 | // Purpose: wxPalette | |
4 | // Author: Julian Smart | |
5 | // Modified by: | |
6 | // Created: 17/09/98 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Julian Smart | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
f97c9854 JS |
12 | /* |
13 | * Colour map | |
14 | * | |
15 | * When constructed with the default constructor, we start from | |
16 | * the wxApp::GetMainColormap, allocating additional read-only cells | |
17 | * in Create(). The cells are freed on the next call to Create() | |
18 | * or when the destructor is called. | |
19 | */ | |
20 | ||
21 | /* Wolfram Gloger <u7y22ab@sunmail.lrz-muenchen.de> | |
22 | I have implemented basic colormap support for the X11 versions of | |
23 | wxWindows, notably wxPalette::Create(). The way I did it is to | |
24 | allocate additional read-only color cells in the default colormap. In | |
25 | general you will get arbitrary pixel values assigned to these new | |
26 | cells and therefore I added a method wxColourMap::TransferBitmap() | |
27 | which maps the pixel values 0..n to the real ones obtained with | |
28 | Create(). This is only implemented for the popular case of 8-bit | |
29 | depth. | |
30 | ||
31 | Allocating read-write color cells would involve installing a private | |
32 | X11 colormap for a particular window, and AFAIK this is not | |
33 | recommended; only the window manager should do this... Also, it is | |
34 | not the functionality that wxPalette::Create() aims to provide. | |
35 | */ | |
36 | ||
4bb6408c JS |
37 | #ifdef __GNUG__ |
38 | #pragma implementation "palette.h" | |
39 | #endif | |
40 | ||
41 | #include "wx/palette.h" | |
f97c9854 JS |
42 | #include "wx/window.h" |
43 | #include "wx/app.h" | |
44 | #include "wx/utils.h" | |
45 | ||
46 | #include <Xm/Xm.h> | |
47 | #include "wx/motif/private.h" | |
4bb6408c JS |
48 | |
49 | #if !USE_SHARED_LIBRARIES | |
50 | IMPLEMENT_DYNAMIC_CLASS(wxPalette, wxGDIObject) | |
f97c9854 | 51 | IMPLEMENT_DYNAMIC_CLASS(wxXPalette, wxObject) |
4bb6408c JS |
52 | #endif |
53 | ||
54 | /* | |
55 | * Palette | |
56 | * | |
57 | */ | |
58 | ||
f97c9854 JS |
59 | wxXPalette::wxXPalette() |
60 | { | |
61 | m_cmap = (WXColormap) 0; | |
62 | m_pix_array_n = 0; | |
63 | m_pix_array = (unsigned long*) 0; | |
64 | m_display = (WXDisplay*) 0; | |
65 | m_destroyable = FALSE; | |
66 | } | |
67 | ||
4bb6408c JS |
68 | wxPaletteRefData::wxPaletteRefData() |
69 | { | |
4bb6408c JS |
70 | } |
71 | ||
72 | wxPaletteRefData::~wxPaletteRefData() | |
73 | { | |
f97c9854 JS |
74 | XColor xcol; |
75 | Display *display = (Display*) NULL; | |
76 | ||
77 | wxNode *node, *next; | |
78 | ||
79 | for (node = m_palettes.First(); node; node = next) { | |
80 | wxXPalette *c = (wxXPalette *)node->Data(); | |
81 | unsigned long *pix_array = c->m_pix_array; | |
82 | Colormap cmap = (Colormap) c->m_cmap; | |
83 | bool destroyable = c->m_destroyable; | |
84 | int pix_array_n = c->m_pix_array_n; | |
85 | display = (Display*) c->m_display; | |
86 | ||
87 | if (pix_array_n > 0) | |
88 | { | |
89 | // XFreeColors(display, cmap, pix_array, pix_array_n, 0); | |
90 | // Be careful not to free '0' pixels... | |
91 | int i, j; | |
92 | for(i=j=0; i<pix_array_n; i=j) { | |
93 | while(j<pix_array_n && pix_array[j]!=0) j++; | |
94 | if(j > i) XFreeColors(display, cmap, &pix_array[i], j-i, 0); | |
95 | while(j<pix_array_n && pix_array[j]==0) j++; | |
96 | } | |
97 | delete [] pix_array; | |
98 | } | |
99 | ||
100 | if (destroyable) | |
101 | XFreeColormap(display, cmap); | |
102 | ||
103 | next = node->Next(); | |
104 | m_palettes.DeleteNode(node); | |
105 | delete c; | |
106 | } | |
4bb6408c JS |
107 | } |
108 | ||
109 | wxPalette::wxPalette() | |
110 | { | |
111 | } | |
112 | ||
113 | wxPalette::wxPalette(int n, const unsigned char *red, const unsigned char *green, const unsigned char *blue) | |
114 | { | |
115 | Create(n, red, green, blue); | |
116 | } | |
117 | ||
118 | wxPalette::~wxPalette() | |
119 | { | |
120 | } | |
121 | ||
122 | bool wxPalette::Create(int n, const unsigned char *red, const unsigned char *green, const unsigned char *blue) | |
123 | { | |
124 | UnRef(); | |
125 | ||
f97c9854 JS |
126 | if (!n) { |
127 | return FALSE; | |
128 | } | |
129 | ||
4bb6408c JS |
130 | m_refData = new wxPaletteRefData; |
131 | ||
f97c9854 JS |
132 | XColor xcol; |
133 | Display* display = (Display*) wxGetDisplay(); | |
134 | ||
135 | unsigned long *pix_array; | |
136 | Colormap cmap; | |
137 | int pix_array_n; | |
138 | ||
139 | cmap = (Colormap) wxTheApp->GetMainColormap(display); | |
140 | ||
141 | pix_array = new unsigned long[n]; | |
142 | if (!pix_array) | |
143 | return FALSE; | |
4bb6408c | 144 | |
f97c9854 JS |
145 | pix_array_n = n; |
146 | xcol.flags = DoRed | DoGreen | DoBlue; | |
147 | for(int i = 0; i < n; i++) { | |
148 | xcol.red = (unsigned short)red[i] << 8; | |
149 | xcol.green = (unsigned short)green[i] << 8; | |
150 | xcol.blue = (unsigned short)blue[i] << 8; | |
151 | pix_array[i] = (XAllocColor(display, cmap, &xcol) == 0) ? 0 : xcol.pixel; | |
152 | } | |
153 | ||
154 | wxXPalette *c = new wxXPalette; | |
155 | ||
156 | c->m_pix_array_n = pix_array_n; | |
157 | c->m_pix_array = pix_array; | |
158 | c->m_cmap = (WXColormap) cmap; | |
159 | c->m_display = (WXDisplay*) display; | |
160 | c->m_destroyable = FALSE; | |
161 | M_PALETTEDATA->m_palettes.Append(c); | |
162 | ||
163 | return TRUE; | |
4bb6408c JS |
164 | } |
165 | ||
166 | int wxPalette::GetPixel(const unsigned char red, const unsigned char green, const unsigned char blue) const | |
167 | { | |
168 | if ( !m_refData ) | |
f97c9854 | 169 | return FALSE; |
4bb6408c JS |
170 | |
171 | // TODO | |
172 | return FALSE; | |
173 | } | |
174 | ||
175 | bool wxPalette::GetRGB(int index, unsigned char *red, unsigned char *green, unsigned char *blue) const | |
176 | { | |
177 | if ( !m_refData ) | |
178 | return FALSE; | |
179 | ||
180 | if (index < 0 || index > 255) | |
181 | return FALSE; | |
182 | ||
183 | // TODO | |
184 | return FALSE; | |
185 | } | |
186 | ||
f97c9854 JS |
187 | WXColormap wxPalette::GetXColormap(WXDisplay* display) const |
188 | { | |
189 | if (!M_PALETTEDATA || (M_PALETTEDATA->m_palettes.Number() == 0)) | |
190 | return wxTheApp->GetMainColormap(display); | |
191 | ||
192 | wxNode* node = M_PALETTEDATA->m_palettes.First(); | |
193 | if (!display && node) | |
194 | { | |
195 | wxXPalette* p = (wxXPalette*) node->Data(); | |
196 | return p->m_cmap; | |
197 | } | |
198 | while (node) | |
199 | { | |
200 | wxXPalette* p = (wxXPalette*) node->Data(); | |
201 | if (p->m_display == display) | |
202 | return p->m_cmap; | |
203 | ||
204 | node = node->Next(); | |
205 | } | |
206 | ||
207 | /* Make a new one: */ | |
208 | wxXPalette *c = new wxXPalette; | |
209 | wxXPalette *first = (wxXPalette *)M_PALETTEDATA->m_palettes.First()->Data(); | |
210 | XColor xcol; | |
211 | int pix_array_n = first->m_pix_array_n; | |
212 | ||
213 | c->m_pix_array_n = pix_array_n; | |
214 | c->m_pix_array = new unsigned long[pix_array_n]; | |
215 | c->m_display = display; | |
216 | c->m_cmap = wxTheApp->GetMainColormap(display); | |
217 | c->m_destroyable = FALSE; | |
218 | ||
219 | xcol.flags = DoRed | DoGreen | DoBlue; | |
220 | int i; | |
221 | for (i = 0; i < pix_array_n; i++) | |
222 | { | |
223 | xcol.pixel = first->m_pix_array[i]; | |
224 | XQueryColor((Display*) first->m_display, (Colormap) first->m_cmap, &xcol); | |
225 | c->m_pix_array[i] = | |
226 | (XAllocColor((Display*) display, (Colormap) c->m_cmap, &xcol) == 0) ? 0 : xcol.pixel; | |
227 | } | |
228 | ||
229 | // wxPalette* nonConstThis = (wxPalette*) this; | |
230 | ||
231 | M_PALETTEDATA->m_palettes.Append(c); | |
232 | ||
233 | return c->m_cmap; | |
234 | } | |
235 | ||
236 | bool wxPalette::TransferBitmap(void *data, int depth, int size) | |
237 | { | |
238 | switch(depth) { | |
239 | case 8: | |
240 | { | |
241 | unsigned char *uptr = (unsigned char *)data; | |
242 | int pix_array_n; | |
243 | unsigned long *pix_array = GetXPixArray((Display*) wxGetDisplay(), &pix_array_n); | |
244 | while(size-- > 0) | |
245 | { | |
246 | if((int)*uptr < pix_array_n) | |
247 | *uptr = (unsigned char)pix_array[*uptr]; | |
248 | uptr++; | |
249 | } | |
250 | ||
251 | return TRUE; | |
252 | } | |
253 | default: | |
254 | return FALSE; | |
255 | } | |
256 | } | |
257 | ||
258 | bool wxPalette::TransferBitmap8(unsigned char *data, unsigned long sz, | |
259 | void *dest, unsigned int bpp) | |
260 | { | |
261 | int pix_array_n; | |
262 | unsigned long *pix_array = GetXPixArray((Display*) wxGetDisplay(), &pix_array_n); | |
263 | switch(bpp) { | |
264 | case 8: { | |
265 | unsigned char *dptr = (unsigned char *)dest; | |
266 | while(sz-- > 0) { | |
267 | if((int)*data < pix_array_n) | |
268 | *dptr = (unsigned char)pix_array[*data]; | |
269 | data++; | |
270 | dptr++; | |
271 | } | |
272 | break; | |
273 | } | |
274 | case 16: { | |
275 | unsigned short *dptr = (unsigned short *)dest; | |
276 | while(sz-- > 0) { | |
277 | if((int)*data < pix_array_n) | |
278 | *dptr = (unsigned short)pix_array[*data]; | |
279 | data++; | |
280 | dptr++; | |
281 | } | |
282 | break; | |
283 | } | |
284 | case 24: { | |
285 | struct rgb24 { unsigned char r, g, b; } *dptr = (struct rgb24 *)dest; | |
286 | while(sz-- > 0) { | |
287 | if((int)*data < pix_array_n) { | |
288 | dptr->r = pix_array[*data] & 0xFF; | |
289 | dptr->g = (pix_array[*data] >> 8) & 0xFF; | |
290 | dptr->b = (pix_array[*data] >> 16) & 0xFF; | |
291 | } | |
292 | data++; | |
293 | dptr++; | |
294 | } | |
295 | break; | |
296 | } | |
297 | case 32: { | |
298 | unsigned long *dptr = (unsigned long *)dest; | |
299 | while(sz-- > 0) { | |
300 | if((int)*data < pix_array_n) | |
301 | *dptr = pix_array[*data]; | |
302 | data++; | |
303 | dptr++; | |
304 | } | |
305 | break; | |
306 | } | |
307 | default: | |
308 | return FALSE; | |
309 | } | |
310 | return TRUE; | |
311 | } | |
312 | ||
313 | unsigned long *wxPalette::GetXPixArray(WXDisplay *display, int *n) | |
314 | { | |
315 | if (!M_PALETTEDATA) | |
316 | return (unsigned long*) 0; | |
317 | wxNode *node; | |
318 | ||
319 | for (node = M_PALETTEDATA->m_palettes.First(); node; node = node->Next()) | |
320 | { | |
321 | wxXPalette *c = (wxXPalette *)node->Data(); | |
322 | if (c->m_display == display) | |
323 | { | |
324 | if (n) | |
325 | *n = c->m_pix_array_n; | |
326 | return c->m_pix_array; | |
327 | } | |
328 | } | |
329 | ||
330 | /* Not found; call GetXColormap, which will create it, then this again */ | |
331 | if (GetXColormap(display)) | |
332 | return GetXPixArray(display, n); | |
333 | else | |
334 | return (unsigned long*) 0; | |
335 | } | |
336 | ||
337 | void wxPalette::PutXColormap(WXDisplay* display, WXColormap cm, bool dp) | |
338 | { | |
339 | UnRef(); | |
340 | ||
341 | m_refData = new wxPaletteRefData; | |
342 | ||
343 | wxXPalette *c = new wxXPalette; | |
344 | ||
345 | c->m_pix_array_n = 0; | |
346 | c->m_pix_array = (unsigned long*) NULL; | |
347 | c->m_display = display; | |
348 | c->m_cmap = cm; | |
349 | c->m_destroyable = dp; | |
350 | ||
351 | M_PALETTEDATA->m_palettes.Append(c); | |
352 | } | |
4bb6408c | 353 |