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/cvs/rxvt-unicode/src/rxvtcolor.C
Revision: 1.10
Committed: Mon Mar 29 21:02:11 2004 UTC (20 years, 1 month ago) by pcg
Content type: text/plain
Branch: MAIN
Changes since 1.9: +17 -0 lines
Log Message:
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File Contents

# Content
1 #include "../config.h"
2 #include <rxvt.h>
3 #include <rxvtcolor.h>
4
5 #include <unistd.h>
6 #include <fcntl.h>
7
8 class byteorder byteorder;
9
10 byteorder::byteorder ()
11 {
12 union {
13 uint32_t u;
14 uint8_t b[4];
15 } w;
16
17 w.b[0] = 0x11;
18 w.b[1] = 0x22;
19 w.b[2] = 0x33;
20 w.b[3] = 0x44;
21
22 e = w.u;
23 }
24
25 refcounted::refcounted (const char *id)
26 {
27 this->id = STRDUP (id);
28 }
29
30 refcounted::~refcounted ()
31 {
32 free (id);
33 }
34
35 template<class T>
36 T *refcache<T>::get (const char *id)
37 {
38 for (T **i = begin (); i < end (); ++i)
39 {
40 if (!strcmp (id, (*i)->id))
41 {
42 (*i)->referenced++;
43 return *i;
44 }
45 }
46
47 T *obj = new T (id);
48
49 obj->referenced = 1;
50
51 if (obj && obj->init ())
52 {
53 push_back (obj);
54 return obj;
55 }
56 else
57 {
58 delete obj;
59 return 0;
60 }
61 }
62
63 template<class T>
64 void refcache<T>::put (T *obj)
65 {
66 if (!obj)
67 return;
68
69 if (!--obj->referenced)
70 {
71 erase (find (begin (), end (), obj));
72 delete obj;
73 }
74 }
75
76 template<class T>
77 refcache<T>::~refcache ()
78 {
79 while (size ())
80 put (*begin ());
81 }
82
83 /////////////////////////////////////////////////////////////////////////////
84
85 static void
86 im_destroy_cb (XIM unused1, XPointer client_data, XPointer unused3)
87 {
88 rxvt_xim *xim = (rxvt_xim *)client_data;
89 rxvt_display *display = xim->display;
90
91 display->xims.erase (find (display->xims.begin (), display->xims.end (), xim));
92
93 display->im_change_cb ();
94 }
95
96 bool rxvt_xim::init ()
97 {
98 display = GET_R->display; //HACK: TODO
99
100 xim = XOpenIM (display->display, NULL, NULL, NULL);
101
102 if (!xim)
103 return false;
104
105 XIMCallback ximcallback;
106 ximcallback.client_data = (XPointer)this;
107 ximcallback.callback = im_destroy_cb;
108
109 XSetIMValues (xim, XNDestroyCallback, &ximcallback, NULL);
110
111 return true;
112 }
113
114 rxvt_xim::~rxvt_xim ()
115 {
116 if (xim)
117 XCloseIM (xim);
118 }
119
120 /////////////////////////////////////////////////////////////////////////////
121
122 rxvt_display::rxvt_display (const char *id)
123 : refcounted (id)
124 , x_ev (this, &rxvt_display::x_cb)
125 , selection_owner (0)
126 {
127 }
128
129 bool rxvt_display::init ()
130 {
131 display = XOpenDisplay (id);
132
133 if (!display)
134 return false;
135
136 screen = DefaultScreen (display);
137 root = DefaultRootWindow (display);
138 visual = DefaultVisual (display, screen);
139 cmap = DefaultColormap (display, screen);
140 depth = DefaultDepth (display, screen);
141
142 #ifdef PREFER_24BIT
143 /*
144 * If depth is not 24, look for a 24bit visual.
145 */
146 if (depth != 24)
147 {
148 XVisualInfo vinfo;
149
150 if (XMatchVisualInfo (display, screen, 24, TrueColor, &vinfo))
151 {
152 depth = 24;
153 visual = vinfo.visual;
154 cmap = XCreateColormap (display,
155 RootWindow (display, screen),
156 visual, AllocNone);
157 }
158 }
159 #endif
160
161 int fd = XConnectionNumber (display);
162 x_ev.start (fd, EVENT_READ);
163 fcntl (fd, F_SETFL, FD_CLOEXEC);
164
165 XSelectInput (display, root, PropertyChangeMask);
166 xa_xim_servers = XInternAtom (display, "XIM_SERVERS", 0);
167
168 flush ();
169
170 return true;
171 }
172
173 rxvt_display::~rxvt_display ()
174 {
175 x_ev.stop ();
176
177 if (display)
178 XCloseDisplay (display);
179 }
180
181 void rxvt_display::im_change_cb ()
182 {
183 for (im_watcher **i = imw.begin (); i != imw.end (); ++i)
184 (*i)->call ();
185 }
186
187 void rxvt_display::x_cb (io_watcher &w, short revents)
188 {
189 do
190 {
191 XEvent xev;
192 XNextEvent (display, &xev);
193
194 //printf ("T %d w %lx\n", xev.type, xev.xany.window);//D
195
196 if (xev.type == PropertyNotify
197 && xev.xany.window == root
198 && xev.xproperty.atom == xa_xim_servers)
199 im_change_cb ();
200
201 for (int i = xw.size (); i--; )
202 {
203 if (!xw[i])
204 xw.erase_unordered (i);
205 else if (xw[i]->window == xev.xany.window)
206 xw[i]->call (xev);
207 }
208 }
209 while (XPending (display));
210
211 flush ();
212 }
213
214 void rxvt_display::flush ()
215 {
216 for (;;)
217 {
218 XFlush (display);
219
220 if (!XPending (display))
221 break;
222
223 x_cb (x_ev, 0);
224 }
225 }
226
227 void rxvt_display::reg (xevent_watcher *w)
228 {
229 xw.push_back (w);
230 w->active = xw.size ();
231 }
232
233 void rxvt_display::unreg (xevent_watcher *w)
234 {
235 if (w->active)
236 xw[w->active - 1] = 0;
237 }
238
239 void rxvt_display::reg (im_watcher *w)
240 {
241 imw.push_back (w);
242 }
243
244 void rxvt_display::unreg (im_watcher *w)
245 {
246 imw.erase (find (imw.begin (), imw.end (), w));
247 }
248
249 void rxvt_display::set_selection_owner (rxvt_term *owner)
250 {
251 if (selection_owner && selection_owner != owner)
252 selection_owner->selection_clear ();
253
254 selection_owner = owner;
255 }
256
257 rxvt_xim *rxvt_display::get_xim (const char *locale, const char *modifiers)
258 {
259 // asprintf is a GNU and *BSD extension.. sorry...
260 char *id;
261
262 if (asprintf (&id, "%s\n%s", locale, modifiers) < 0)
263 return 0;
264
265 rxvt_xim *xim = xims.get (id);
266
267 free (id);
268
269 return xim;
270 }
271
272 void rxvt_display::put_xim (rxvt_xim *xim)
273 {
274 xims.put (xim);
275 }
276
277 /////////////////////////////////////////////////////////////////////////////
278
279 template refcache<rxvt_display>;
280 refcache<rxvt_display> displays;
281
282 /////////////////////////////////////////////////////////////////////////////
283
284 bool
285 rxvt_color::set (rxvt_display *display, Pixel p)
286 {
287 #if XFT
288 XColor xc;
289
290 xc.pixel = p;
291 if (!XQueryColor (display->display, display->cmap, &xc))
292 return false;
293
294 XRenderColor d;
295
296 d.red = xc.red;
297 d.green = xc.green;
298 d.blue = xc.blue;
299 d.alpha = 0xffff;
300
301 return
302 XftColorAllocValue (display->display,
303 display->visual,
304 display->cmap,
305 &d, &c);
306 #else
307 this->p = p;
308 #endif
309
310 return true;
311 }
312
313 bool
314 rxvt_color::set (rxvt_display *display, const char *name)
315 {
316 XColor xc;
317
318 if (XParseColor (display->display, display->cmap, name, &xc))
319 return set (display, xc.red, xc.green, xc.blue);
320
321 return false;
322 }
323
324 bool
325 rxvt_color::set (rxvt_display *display, unsigned short cr, unsigned short cg, unsigned short cb)
326 {
327 XColor xc;
328
329 xc.red = cr;
330 xc.green = cg;
331 xc.blue = cb;
332 xc.flags = DoRed | DoGreen | DoBlue;
333
334 if (XAllocColor (display->display, display->cmap, &xc))
335 return set (display, xc.pixel);
336
337 return false;
338 }
339
340 void
341 rxvt_color::get (rxvt_display *display, unsigned short &cr, unsigned short &cg, unsigned short &cb)
342 {
343 #if XFT
344 cr = c.color.red;
345 cg = c.color.green;
346 cb = c.color.blue;
347 #else
348 XColor c;
349
350 c.pixel = p;
351 XQueryColor (display->display, display->cmap, &c);
352
353 cr = c.red;
354 cg = c.green;
355 cb = c.blue;
356 #endif
357 }
358
359 void
360 rxvt_color::free (rxvt_display *display)
361 {
362 #if XFT
363 XftColorFree (display->display, display->visual, display->cmap, &c);
364 #else
365 XFreeColors (display->display, display->cmap, &p, 1, AllPlanes);
366 #endif
367 }
368