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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 | ||
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 | ||
37 | #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) | |
38 | #pragma implementation "palette.h" | |
39 | #endif | |
40 | ||
41 | // For compilers that support precompilation, includes "wx.h". | |
42 | #include "wx/wxprec.h" | |
43 | ||
44 | #include "wx/palette.h" | |
45 | #include "wx/window.h" | |
46 | #include "wx/app.h" | |
47 | #include "wx/utils.h" | |
48 | ||
49 | #ifdef __VMS__ | |
50 | #pragma message disable nosimpint | |
51 | #endif | |
52 | #include <Xm/Xm.h> | |
53 | #ifdef __VMS__ | |
54 | #pragma message enable nosimpint | |
55 | #endif | |
56 | #include "wx/motif/private.h" | |
57 | ||
58 | IMPLEMENT_DYNAMIC_CLASS(wxPalette, wxGDIObject) | |
59 | IMPLEMENT_DYNAMIC_CLASS(wxXPalette, wxObject) | |
60 | ||
61 | /* | |
62 | * Palette | |
63 | * | |
64 | */ | |
65 | ||
66 | wxXPalette::wxXPalette() | |
67 | { | |
68 | m_cmap = (WXColormap) 0; | |
69 | m_pix_array_n = 0; | |
70 | m_pix_array = (unsigned long*) 0; | |
71 | m_display = (WXDisplay*) 0; | |
72 | m_destroyable = FALSE; | |
73 | } | |
74 | ||
75 | wxPaletteRefData::wxPaletteRefData() | |
76 | { | |
77 | } | |
78 | ||
79 | wxPaletteRefData::~wxPaletteRefData() | |
80 | { | |
81 | Display *display = (Display*) NULL; | |
82 | ||
83 | wxList::compatibility_iterator node, next; | |
84 | ||
85 | for (node = m_palettes.GetFirst(); node; node = next) { | |
86 | wxXPalette *c = (wxXPalette *)node->GetData(); | |
87 | unsigned long *pix_array = c->m_pix_array; | |
88 | Colormap cmap = (Colormap) c->m_cmap; | |
89 | bool destroyable = c->m_destroyable; | |
90 | int pix_array_n = c->m_pix_array_n; | |
91 | display = (Display*) c->m_display; | |
92 | ||
93 | if (pix_array_n > 0) | |
94 | { | |
95 | // XFreeColors(display, cmap, pix_array, pix_array_n, 0); | |
96 | // Be careful not to free '0' pixels... | |
97 | int i, j; | |
98 | for(i=j=0; i<pix_array_n; i=j) { | |
99 | while(j<pix_array_n && pix_array[j]!=0) j++; | |
100 | if(j > i) XFreeColors(display, cmap, &pix_array[i], j-i, 0); | |
101 | while(j<pix_array_n && pix_array[j]==0) j++; | |
102 | } | |
103 | delete [] pix_array; | |
104 | } | |
105 | ||
106 | if (destroyable) | |
107 | XFreeColormap(display, cmap); | |
108 | ||
109 | next = node->GetNext(); | |
110 | m_palettes.Erase(node); | |
111 | delete c; | |
112 | } | |
113 | } | |
114 | ||
115 | wxPalette::wxPalette() | |
116 | { | |
117 | } | |
118 | ||
119 | wxPalette::wxPalette(int n, const unsigned char *red, const unsigned char *green, const unsigned char *blue) | |
120 | { | |
121 | Create(n, red, green, blue); | |
122 | } | |
123 | ||
124 | wxPalette::~wxPalette() | |
125 | { | |
126 | } | |
127 | ||
128 | bool wxPalette::Create(int n, const unsigned char *red, const unsigned char *green, const unsigned char *blue) | |
129 | { | |
130 | UnRef(); | |
131 | ||
132 | if (!n) { | |
133 | return FALSE; | |
134 | } | |
135 | ||
136 | m_refData = new wxPaletteRefData; | |
137 | ||
138 | XColor xcol; | |
139 | Display* display = (Display*) wxGetDisplay(); | |
140 | ||
141 | unsigned long *pix_array; | |
142 | Colormap cmap; | |
143 | int pix_array_n; | |
144 | ||
145 | cmap = (Colormap) wxTheApp->GetMainColormap(display); | |
146 | ||
147 | pix_array = new unsigned long[n]; | |
148 | if (!pix_array) | |
149 | return FALSE; | |
150 | ||
151 | pix_array_n = n; | |
152 | xcol.flags = DoRed | DoGreen | DoBlue; | |
153 | for(int i = 0; i < n; i++) { | |
154 | xcol.red = (unsigned short)red[i] << 8; | |
155 | xcol.green = (unsigned short)green[i] << 8; | |
156 | xcol.blue = (unsigned short)blue[i] << 8; | |
157 | pix_array[i] = (XAllocColor(display, cmap, &xcol) == 0) ? 0 : xcol.pixel; | |
158 | } | |
159 | ||
160 | wxXPalette *c = new wxXPalette; | |
161 | ||
162 | c->m_pix_array_n = pix_array_n; | |
163 | c->m_pix_array = pix_array; | |
164 | c->m_cmap = (WXColormap) cmap; | |
165 | c->m_display = (WXDisplay*) display; | |
166 | c->m_destroyable = FALSE; | |
167 | M_PALETTEDATA->m_palettes.Append(c); | |
168 | ||
169 | return TRUE; | |
170 | } | |
171 | ||
172 | int wxPalette::GetPixel(const unsigned char red, const unsigned char green, const unsigned char blue) const | |
173 | { | |
174 | if ( !m_refData ) | |
175 | return FALSE; | |
176 | ||
177 | // TODO | |
178 | return FALSE; | |
179 | } | |
180 | ||
181 | bool wxPalette::GetRGB(int index, unsigned char *WXUNUSED(red), unsigned char *WXUNUSED(green), unsigned char *WXUNUSED(blue)) const | |
182 | { | |
183 | if ( !m_refData ) | |
184 | return FALSE; | |
185 | ||
186 | if (index < 0 || index > 255) | |
187 | return FALSE; | |
188 | ||
189 | // TODO | |
190 | return FALSE; | |
191 | } | |
192 | ||
193 | WXColormap wxPalette::GetXColormap(WXDisplay* display) const | |
194 | { | |
195 | if (!M_PALETTEDATA || (M_PALETTEDATA->m_palettes.GetCount() == 0)) | |
196 | return wxTheApp->GetMainColormap(display); | |
197 | ||
198 | wxList::compatibility_iterator node = M_PALETTEDATA->m_palettes.GetFirst(); | |
199 | if (!display && node) | |
200 | { | |
201 | wxXPalette* p = (wxXPalette*) node->GetData(); | |
202 | return p->m_cmap; | |
203 | } | |
204 | while (node) | |
205 | { | |
206 | wxXPalette* p = (wxXPalette*) node->GetData(); | |
207 | if (p->m_display == display) | |
208 | return p->m_cmap; | |
209 | ||
210 | node = node->GetNext(); | |
211 | } | |
212 | ||
213 | /* Make a new one: */ | |
214 | wxXPalette *c = new wxXPalette; | |
215 | wxXPalette *first = | |
216 | (wxXPalette *)M_PALETTEDATA->m_palettes.GetFirst()->GetData(); | |
217 | XColor xcol; | |
218 | int pix_array_n = first->m_pix_array_n; | |
219 | ||
220 | c->m_pix_array_n = pix_array_n; | |
221 | c->m_pix_array = new unsigned long[pix_array_n]; | |
222 | c->m_display = display; | |
223 | c->m_cmap = wxTheApp->GetMainColormap(display); | |
224 | c->m_destroyable = FALSE; | |
225 | ||
226 | xcol.flags = DoRed | DoGreen | DoBlue; | |
227 | int i; | |
228 | for (i = 0; i < pix_array_n; i++) | |
229 | { | |
230 | xcol.pixel = first->m_pix_array[i]; | |
231 | XQueryColor((Display*) first->m_display, | |
232 | (Colormap) first->m_cmap, &xcol); | |
233 | c->m_pix_array[i] = | |
234 | (XAllocColor((Display*) display, (Colormap) c->m_cmap, &xcol) == 0) | |
235 | ? 0 : xcol.pixel; | |
236 | } | |
237 | ||
238 | // wxPalette* nonConstThis = (wxPalette*) this; | |
239 | ||
240 | M_PALETTEDATA->m_palettes.Append(c); | |
241 | ||
242 | return c->m_cmap; | |
243 | } | |
244 | ||
245 | bool wxPalette::TransferBitmap(void *data, int depth, int size) | |
246 | { | |
247 | switch(depth) { | |
248 | case 8: | |
249 | { | |
250 | unsigned char *uptr = (unsigned char *)data; | |
251 | int pix_array_n; | |
252 | unsigned long *pix_array = GetXPixArray((Display*) wxGetDisplay(), &pix_array_n); | |
253 | while(size-- > 0) | |
254 | { | |
255 | if((int)*uptr < pix_array_n) | |
256 | *uptr = (unsigned char)pix_array[*uptr]; | |
257 | uptr++; | |
258 | } | |
259 | ||
260 | return TRUE; | |
261 | } | |
262 | default: | |
263 | return FALSE; | |
264 | } | |
265 | } | |
266 | ||
267 | bool wxPalette::TransferBitmap8(unsigned char *data, unsigned long sz, | |
268 | void *dest, unsigned int bpp) | |
269 | { | |
270 | int pix_array_n; | |
271 | unsigned long *pix_array = GetXPixArray((Display*) wxGetDisplay(), &pix_array_n); | |
272 | switch(bpp) { | |
273 | case 8: { | |
274 | unsigned char *dptr = (unsigned char *)dest; | |
275 | while(sz-- > 0) { | |
276 | if((int)*data < pix_array_n) | |
277 | *dptr = (unsigned char)pix_array[*data]; | |
278 | data++; | |
279 | dptr++; | |
280 | } | |
281 | break; | |
282 | } | |
283 | case 16: { | |
284 | unsigned short *dptr = (unsigned short *)dest; | |
285 | while(sz-- > 0) { | |
286 | if((int)*data < pix_array_n) | |
287 | *dptr = (unsigned short)pix_array[*data]; | |
288 | data++; | |
289 | dptr++; | |
290 | } | |
291 | break; | |
292 | } | |
293 | case 24: { | |
294 | struct rgb24 { unsigned char r, g, b; } *dptr = (struct rgb24 *)dest; | |
295 | while(sz-- > 0) { | |
296 | if((int)*data < pix_array_n) { | |
297 | dptr->r = pix_array[*data] & 0xFF; | |
298 | dptr->g = (pix_array[*data] >> 8) & 0xFF; | |
299 | dptr->b = (pix_array[*data] >> 16) & 0xFF; | |
300 | } | |
301 | data++; | |
302 | dptr++; | |
303 | } | |
304 | break; | |
305 | } | |
306 | case 32: { | |
307 | unsigned long *dptr = (unsigned long *)dest; | |
308 | while(sz-- > 0) { | |
309 | if((int)*data < pix_array_n) | |
310 | *dptr = pix_array[*data]; | |
311 | data++; | |
312 | dptr++; | |
313 | } | |
314 | break; | |
315 | } | |
316 | default: | |
317 | return FALSE; | |
318 | } | |
319 | return TRUE; | |
320 | } | |
321 | ||
322 | unsigned long *wxPalette::GetXPixArray(WXDisplay *display, int *n) | |
323 | { | |
324 | if (!M_PALETTEDATA) | |
325 | return (unsigned long*) 0; | |
326 | wxList::compatibility_iterator node; | |
327 | ||
328 | for (node = M_PALETTEDATA->m_palettes.GetFirst(); node; | |
329 | node = node->GetNext()) | |
330 | { | |
331 | wxXPalette *c = (wxXPalette *)node->GetData(); | |
332 | if (c->m_display == display) | |
333 | { | |
334 | if (n) | |
335 | *n = c->m_pix_array_n; | |
336 | return c->m_pix_array; | |
337 | } | |
338 | } | |
339 | ||
340 | /* Not found; call GetXColormap, which will create it, then this again */ | |
341 | if (GetXColormap(display)) | |
342 | return GetXPixArray(display, n); | |
343 | else | |
344 | return (unsigned long*) 0; | |
345 | } | |
346 | ||
347 | void wxPalette::PutXColormap(WXDisplay* display, WXColormap cm, bool dp) | |
348 | { | |
349 | UnRef(); | |
350 | ||
351 | m_refData = new wxPaletteRefData; | |
352 | ||
353 | wxXPalette *c = new wxXPalette; | |
354 | ||
355 | c->m_pix_array_n = 0; | |
356 | c->m_pix_array = (unsigned long*) NULL; | |
357 | c->m_display = display; | |
358 | c->m_cmap = cm; | |
359 | c->m_destroyable = dp; | |
360 | ||
361 | M_PALETTEDATA->m_palettes.Append(c); | |
362 | } | |
363 |