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Revision: 1.46
Committed: Wed Feb 1 18:36:48 2006 UTC (18 years, 3 months ago) by root
Content type: text/plain
Branch: MAIN
Changes since 1.45: +30 -20 lines
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# Content
1 /*--------------------------------*-C-*---------------------------------*
2 * File: rxvttoolkit.C
3 *----------------------------------------------------------------------*
4 *
5 * All portions of code are copyright by their respective author/s.
6 * Copyright (c) 2003-2004 Marc Lehmann <pcg@goof.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 *----------------------------------------------------------------------*/
22
23 #include "../config.h"
24 #include <rxvt.h>
25 #include <rxvttoolkit.h>
26
27 #include <unistd.h>
28 #include <fcntl.h>
29
30 #include <sys/utsname.h>
31
32 #ifndef NO_SLOW_LINK_SUPPORT
33 # include <sys/socket.h>
34 # include <sys/un.h>
35 #endif
36
37 #if XFT
38 # include <X11/extensions/Xrender.h>
39 #endif
40
41 const char *const xa_names[] =
42 {
43 "TEXT",
44 "COMPOUND_TEXT",
45 "UTF8_STRING",
46 "MULTIPLE",
47 "TARGETS",
48 "TIMESTAMP",
49 "VT_SELECTION",
50 "INCR",
51 "WM_PROTOCOLS",
52 "WM_DELETE_WINDOW",
53 "CLIPBOARD",
54 "AVERAGE_WIDTH",
55 "WEIGHT_NAME",
56 "SLANT",
57 "CHARSET_REGISTRY",
58 "CHARSET_ENCODING",
59 #if ENABLE_FRILLS
60 "_MOTIF_WM_HINTS",
61 #endif
62 #if ENABLE_EWMH
63 "_NET_WM_PID",
64 "_NET_WM_NAME",
65 "_NET_WM_ICON_NAME",
66 "_NET_WM_PING",
67 #endif
68 #if USE_XIM
69 "WM_LOCALE_NAME",
70 "XIM_SERVERS",
71 #endif
72 #ifdef TRANSPARENT
73 "_XROOTPMAP_ID",
74 "ESETROOT_PMAP_ID",
75 #endif
76 #if ENABLE_XEMBED
77 "_XEMBED",
78 "_XEMBED_INFO",
79 #endif
80 #if !ENABLE_MINIMAL
81 "SCREEN_RESOURCES",
82 "XDCCC_LINEAR_RGB_CORRECTION",
83 "XDCCC_LINEAR_RGB_MATRICES",
84 "WM_COLORMAP_WINDOWS",
85 "WM_STATE",
86 "cursor",
87 # if USE_XIM
88 "TRANSPORT",
89 "LOCALES",
90 "_XIM_PROTOCOL",
91 "_XIM_XCONNECT",
92 "_XIM_MOREDATA",
93 # endif
94 #endif
95 };
96
97 /////////////////////////////////////////////////////////////////////////////
98
99 refcounted::refcounted (const char *id)
100 {
101 this->id = strdup (id);
102 }
103
104 refcounted::~refcounted ()
105 {
106 free (id);
107 }
108
109 template<class T>
110 T *refcache<T>::get (const char *id)
111 {
112 for (T **i = this->begin (); i < this->end (); ++i)
113 {
114 if (!strcmp (id, (*i)->id))
115 {
116 ++(*i)->referenced;
117 (*i)->ref_next ();
118 return *i;
119 }
120 }
121
122 T *obj = new T (id);
123
124 if (obj && obj->ref_init ())
125 {
126 obj->referenced = 1;
127 this->push_back (obj);
128 return obj;
129 }
130 else
131 {
132 delete obj;
133 return 0;
134 }
135 }
136
137 template<class T>
138 void refcache<T>::put (T *obj)
139 {
140 if (!obj)
141 return;
142
143 if (!--obj->referenced)
144 {
145 this->erase (find (this->begin (), this->end (), obj));
146 delete obj;
147 }
148 }
149
150 template<class T>
151 void refcache<T>::clear ()
152 {
153 while (this->size ())
154 put (*this->begin ());
155 }
156
157 /////////////////////////////////////////////////////////////////////////////
158
159 #ifdef USE_XIM
160
161 static void
162 #if XIMCB_PROTO_BROKEN
163 im_destroy_cb (XIC unused1, XPointer client_data, XPointer unused3)
164 #else
165 im_destroy_cb (XIM unused1, XPointer client_data, XPointer unused3)
166 #endif
167 {
168 rxvt_xim *xim = (rxvt_xim *)client_data;
169 rxvt_display *display = xim->display;
170
171 xim->xim = 0;
172
173 display->xims.erase (find (display->xims.begin (), display->xims.end (), xim));
174 display->im_change_cb ();
175 }
176
177 bool
178 rxvt_xim::ref_init ()
179 {
180 display = GET_R->display; //HACK: TODO
181
182 xim = XOpenIM (display->display, NULL, NULL, NULL);
183
184 if (!xim)
185 return false;
186
187 XIMCallback ximcallback;
188 ximcallback.client_data = (XPointer)this;
189 ximcallback.callback = im_destroy_cb;
190
191 XSetIMValues (xim, XNDestroyCallback, &ximcallback, NULL);
192
193 return true;
194 }
195
196 rxvt_xim::~rxvt_xim ()
197 {
198 if (xim)
199 XCloseIM (xim);
200 }
201
202 #endif
203
204 /////////////////////////////////////////////////////////////////////////////
205
206 void
207 rxvt_screen::set (rxvt_display *disp)
208 {
209 display = disp;
210 xdisp = disp->display;
211
212 Screen *screen = ScreenOfDisplay (xdisp, disp->screen);
213
214 depth = DefaultDepthOfScreen (screen);
215 visual = DefaultVisualOfScreen (screen);
216 cmap = DefaultColormapOfScreen (screen);
217 }
218
219 void
220 rxvt_screen::set (rxvt_display *disp, int bitdepth)
221 {
222 set (disp);
223
224 #if XFT
225 XVisualInfo vinfo;
226
227 if (XMatchVisualInfo (xdisp, display->screen, bitdepth, TrueColor, &vinfo))
228 {
229 depth = bitdepth;
230 visual = vinfo.visual;
231 cmap = XCreateColormap (xdisp, disp->root, visual, AllocNone);
232 }
233 #endif
234 }
235
236 void
237 rxvt_screen::clear ()
238 {
239 if (cmap != DefaultColormapOfScreen (ScreenOfDisplay (xdisp, display->screen)))
240 XFreeColormap (xdisp, cmap);
241 }
242
243 /////////////////////////////////////////////////////////////////////////////
244
245 rxvt_display::rxvt_display (const char *id)
246 : refcounted (id)
247 , x_ev (this, &rxvt_display::x_cb)
248 , selection_owner (0)
249 {
250 }
251
252 XrmDatabase
253 rxvt_display::get_resources ()
254 {
255 char *homedir = (char *)getenv ("HOME");
256 char fname[1024];
257
258 /*
259 * get resources using the X library function
260 */
261 char *displayResource, *xe;
262 XrmDatabase database, rdb1;
263
264 database = NULL;
265
266 // for ordering, see for example http://www.faqs.org/faqs/Xt-FAQ/ Subject: 20
267
268 // 6. System wide per application default file.
269
270 /* Add in $XAPPLRESDIR/Rxvt only; not bothering with XUSERFILESEARCHPATH */
271 if ((xe = (char *)getenv ("XAPPLRESDIR")))
272 {
273 snprintf (fname, sizeof (fname), "%s/%s", xe, RESCLASS);
274
275 if ((rdb1 = XrmGetFileDatabase (fname)))
276 XrmMergeDatabases (rdb1, &database);
277 }
278
279 // 5. User's per application default file.
280 // none
281
282 // 4. User's defaults file.
283 /* Get any Xserver defaults */
284 displayResource = XResourceManagerString (display);
285
286 if (displayResource != NULL)
287 {
288 if ((rdb1 = XrmGetStringDatabase (displayResource)))
289 XrmMergeDatabases (rdb1, &database);
290 }
291 else if (homedir)
292 {
293 snprintf (fname, sizeof (fname), "%s/.Xdefaults", homedir);
294
295 if ((rdb1 = XrmGetFileDatabase (fname)))
296 XrmMergeDatabases (rdb1, &database);
297 }
298
299 /* Get screen specific resources */
300 displayResource = XScreenResourceString (ScreenOfDisplay (display, screen));
301
302 if (displayResource != NULL)
303 {
304 if ((rdb1 = XrmGetStringDatabase (displayResource)))
305 /* Merge with screen-independent resources */
306 XrmMergeDatabases (rdb1, &database);
307
308 XFree (displayResource);
309 }
310
311 // 3. User's per host defaults file
312 /* Add in XENVIRONMENT file */
313 if ((xe = (char *)getenv ("XENVIRONMENT"))
314 && (rdb1 = XrmGetFileDatabase (xe)))
315 XrmMergeDatabases (rdb1, &database);
316 else if (homedir)
317 {
318 struct utsname un;
319
320 if (!uname (&un))
321 {
322 snprintf (fname, sizeof (fname), "%s/.Xdefaults-%s", homedir, un.nodename);
323
324 if ((rdb1 = XrmGetFileDatabase (fname)))
325 XrmMergeDatabases (rdb1, &database);
326 }
327 }
328
329 return database;
330 }
331
332 bool rxvt_display::ref_init ()
333 {
334 #ifdef LOCAL_X_IS_UNIX
335 if (id[0] == ':')
336 {
337 val = rxvt_malloc (5 + strlen (id) + 1);
338 strcpy (val, "unix/");
339 strcat (val, id);
340 display = XOpenDisplay (val);
341 free (val);
342 }
343 else
344 #endif
345 display = 0;
346
347 if (!display)
348 display = XOpenDisplay (id);
349
350 if (!display)
351 return false;
352
353 screen = DefaultScreen (display);
354 root = DefaultRootWindow (display);
355
356 assert (sizeof (xa_names) / sizeof (char *) == NUM_XA);
357 XInternAtoms (display, (char **)xa_names, NUM_XA, False, xa);
358
359 XrmSetDatabase (display, get_resources ());
360
361 #ifdef POINTER_BLANK
362 XColor blackcolour;
363 blackcolour.red = 0;
364 blackcolour.green = 0;
365 blackcolour.blue = 0;
366 Font f = XLoadFont (display, "fixed");
367 blank_cursor = XCreateGlyphCursor (display, f, f, ' ', ' ',
368 &blackcolour, &blackcolour);
369 XUnloadFont (display, f);
370 #endif
371
372 int fd = XConnectionNumber (display);
373
374 #ifndef NO_SLOW_LINK_SUPPORT
375 // try to detect wether we have a local connection.
376 // assume unix domains socket == local, everything else not
377 // TODO: might want to check for inet/127.0.0.1
378 is_local = 0;
379 sockaddr_un sa;
380 socklen_t sl = sizeof (sa);
381
382 if (!getsockname (fd, (sockaddr *)&sa, &sl))
383 is_local = sa.sun_family == AF_LOCAL;
384 #endif
385
386 x_ev.start (fd, EVENT_READ);
387 fcntl (fd, F_SETFD, FD_CLOEXEC);
388
389 XSelectInput (display, root, PropertyChangeMask);
390
391 flush ();
392
393 return true;
394 }
395
396 void
397 rxvt_display::ref_next ()
398 {
399 // TODO: somehow check wether the database files/resources changed
400 // before affording re-loading/parsing
401 XrmDestroyDatabase (XrmGetDatabase (display));
402 XrmSetDatabase (display, get_resources ());
403 printf ("next\n");//D
404 }
405
406 rxvt_display::~rxvt_display ()
407 {
408 if (!display)
409 return;
410
411 #ifdef POINTER_BLANK
412 XFreeCursor (display, blank_cursor);
413 #endif
414 x_ev.stop ();
415 #ifdef USE_XIM
416 xims.clear ();
417 #endif
418 XCloseDisplay (display);
419 }
420
421 #ifdef USE_XIM
422 void rxvt_display::im_change_cb ()
423 {
424 for (im_watcher **i = imw.begin (); i != imw.end (); ++i)
425 (*i)->call ();
426 }
427
428 void rxvt_display::im_change_check ()
429 {
430 // try to only call im_change_cb when a new input method
431 // registers, as xlib crashes due to a race otherwise.
432 Atom actual_type, *atoms;
433 int actual_format;
434 unsigned long nitems, bytes_after;
435
436 if (XGetWindowProperty (display, root, xa[XA_XIM_SERVERS], 0L, 1000000L,
437 False, XA_ATOM, &actual_type, &actual_format,
438 &nitems, &bytes_after, (unsigned char **)&atoms)
439 != Success )
440 return;
441
442 if (actual_type == XA_ATOM && actual_format == 32)
443 for (int i = 0; i < nitems; i++)
444 if (XGetSelectionOwner (display, atoms[i]))
445 {
446 im_change_cb ();
447 break;
448 }
449
450 XFree (atoms);
451 }
452 #endif
453
454 void rxvt_display::x_cb (io_watcher &w, short revents)
455 {
456 do
457 {
458 XEvent xev;
459 XNextEvent (display, &xev);
460
461 #ifdef USE_XIM
462 if (!XFilterEvent (&xev, None))
463 {
464 if (xev.type == PropertyNotify
465 && xev.xany.window == root
466 && xev.xproperty.atom == xa[XA_XIM_SERVERS])
467 im_change_check ();
468 #endif
469 for (int i = xw.size (); i--; )
470 {
471 if (!xw[i])
472 xw.erase_unordered (i);
473 else if (xw[i]->window == xev.xany.window)
474 xw[i]->call (xev);
475 }
476 #ifdef USE_XIM
477 }
478 #endif
479 }
480 while (XEventsQueued (display, QueuedAlready));
481
482 XFlush (display);
483 }
484
485 void rxvt_display::flush ()
486 {
487 if (XEventsQueued (display, QueuedAlready))
488 x_cb (x_ev, EVENT_READ);
489
490 XFlush (display);
491 }
492
493 void rxvt_display::reg (xevent_watcher *w)
494 {
495 xw.push_back (w);
496 w->active = xw.size ();
497 }
498
499 void rxvt_display::unreg (xevent_watcher *w)
500 {
501 if (w->active)
502 xw[w->active - 1] = 0;
503 }
504
505 void rxvt_display::set_selection_owner (rxvt_term *owner)
506 {
507 if (selection_owner && selection_owner != owner)
508 selection_owner->selection_clear ();
509
510 selection_owner = owner;
511 }
512
513 #ifdef USE_XIM
514
515 void rxvt_display::reg (im_watcher *w)
516 {
517 imw.push_back (w);
518 }
519
520 void rxvt_display::unreg (im_watcher *w)
521 {
522 imw.erase (find (imw.begin (), imw.end (), w));
523 }
524
525 rxvt_xim *rxvt_display::get_xim (const char *locale, const char *modifiers)
526 {
527 char *id;
528 int l, m;
529
530 l = strlen (locale);
531 m = strlen (modifiers);
532
533 if (!(id = (char *)malloc (l + m + 2)))
534 return 0;
535
536 memcpy (id, locale, l); id[l] = '\n';
537 memcpy (id + l + 1, modifiers, m); id[l + m + 1] = 0;
538
539 rxvt_xim *xim = xims.get (id);
540
541 free (id);
542
543 return xim;
544 }
545
546 void rxvt_display::put_xim (rxvt_xim *xim)
547 {
548 # if XLIB_IS_RACEFREE
549 xims.put (xim);
550 # endif
551 }
552
553 #endif
554
555 Atom rxvt_display::atom (const char *name)
556 {
557 return XInternAtom (display, name, False);
558 }
559
560 /////////////////////////////////////////////////////////////////////////////
561
562 template class refcache<rxvt_display>;
563 refcache<rxvt_display> displays;
564
565 /////////////////////////////////////////////////////////////////////////////
566
567 bool
568 rxvt_color::alloc (rxvt_screen *screen, const rgba &color)
569 {
570 #if XFT
571 XRenderPictFormat *format;
572
573 // FUCKING Xft gets it wrong, of course, so work around it
574 // transparency users should eat shit and die, and then
575 // XRenderQueryPictIndexValues themselves plenty.
576 if ((screen->visual->c_class == TrueColor || screen->visual->c_class == DirectColor)
577 && (format = XRenderFindVisualFormat (screen->xdisp, screen->visual)))
578 {
579 // the fun lies in doing everything manually...
580 c.color.red = color.r;
581 c.color.green = color.g;
582 c.color.blue = color.b;
583 c.color.alpha = color.a;
584
585 c.pixel = ((color.r * format->direct.redMask / rgba::MAX_CC) << format->direct.red )
586 | ((color.g * format->direct.greenMask / rgba::MAX_CC) << format->direct.green)
587 | ((color.b * format->direct.blueMask / rgba::MAX_CC) << format->direct.blue )
588 | ((color.a * format->direct.alphaMask / rgba::MAX_CC) << format->direct.alpha);
589
590 return true;
591 }
592 else
593 {
594 XRenderColor d;
595
596 d.red = color.r;
597 d.green = color.g;
598 d.blue = color.b;
599 d.alpha = color.a;
600
601 return XftColorAllocValue (screen->xdisp, screen->visual, screen->cmap, &d, &c);
602 }
603 #else
604 c.red = color.r;
605 c.green = color.g;
606 c.blue = color.b;
607
608 if (screen->visual->c_class == TrueColor || screen->visual->c_class == DirectColor)
609 {
610 c.pixel = (color.r * (screen->visual->red_mask >> ctz (screen->visual->red_mask ))
611 / rgba::MAX_CC) << ctz (screen->visual->red_mask )
612 | (color.g * (screen->visual->green_mask >> ctz (screen->visual->green_mask))
613 / rgba::MAX_CC) << ctz (screen->visual->green_mask)
614 | (color.b * (screen->visual->blue_mask >> ctz (screen->visual->blue_mask ))
615 / rgba::MAX_CC) << ctz (screen->visual->blue_mask );
616
617 return true;
618 }
619 else if (XAllocColor (screen->xdisp, screen->cmap, &c))
620 return true;
621 else
622 c.pixel = (color.r + color.g + color.b) > 128*3
623 ? WhitePixelOfScreen (DefaultScreenOfDisplay (screen->xdisp))
624 : BlackPixelOfScreen (DefaultScreenOfDisplay (screen->xdisp));
625 #endif
626
627 return false;
628 }
629
630 bool
631 rxvt_color::set (rxvt_screen *screen, const char *name)
632 {
633 rgba c;
634 char eos;
635 int skip;
636
637 // parse the nonstandard "[alphapercent]" prefix
638 if (1 <= sscanf (name, "[%hd]%n", &c.a, &skip))
639 {
640 c.a = lerp<int, int, int> (0, rgba::MAX_CC, c.a);
641 name += skip;
642 }
643 else
644 c.a = rgba::MAX_CC;
645
646 // parse the non-standard "rgba:rrrr/gggg/bbbb/aaaa" format
647 if (strlen (name) != 4+5*4 || 4 != sscanf (name, "rgba:%4hx/%4hx/%4hx/%4hx%c", &c.r, &c.g, &c.b, &c.a, &eos))
648 {
649 XColor xc, xc_exact;
650
651 if (XParseColor (screen->xdisp, screen->cmap, name, &xc))
652 {
653 c.r = xc.red;
654 c.g = xc.green;
655 c.b = xc.blue;
656 }
657 else
658 {
659 c.r = 0xffff;
660 c.g = 0x6969;
661 c.b = 0xb4b4;
662
663 rxvt_warn ("unable to parse color '%s', using pink instead.\n", name);
664 }
665 }
666
667 return set (screen, c);
668 }
669
670 bool
671 rxvt_color::set (rxvt_screen *screen, const rgba &color)
672 {
673 bool got = alloc (screen, color);
674
675 #if !ENABLE_MINIMAL
676 int cmap_size = screen->visual->map_entries;
677
678 if (!got
679 && screen->visual->c_class == PseudoColor
680 && cmap_size < 4096)
681 {
682 XColor *colors = new XColor [screen->visual->map_entries];
683
684 for (int i = 0; i < cmap_size; i++)
685 colors [i].pixel = i;
686
687 // many kilobytes transfer per colour, but pseudocolor isn't worth
688 // many extra optimisations.
689 XQueryColors (screen->xdisp, screen->cmap, colors, cmap_size);
690
691 int diff = 0x7fffffffUL;
692 XColor *best = colors;
693
694 for (int i = 0; i < cmap_size; i++)
695 {
696 int d = (squared_diff<int> (color.r >> 2, colors [i].red >> 2))
697 + (squared_diff<int> (color.g >> 2, colors [i].green >> 2))
698 + (squared_diff<int> (color.b >> 2, colors [i].blue >> 2));
699
700 if (d < diff)
701 {
702 diff = d;
703 best = colors + i;
704 }
705 }
706
707 //rxvt_warn ("could not allocate %04x %04x %04x, getting %04x %04x %04x instead (%d)\n",
708 // color.r, color.g, color.b, best->red, best->green, best->blue, diff);
709
710 got = alloc (screen, rgba (best->red, best->green, best->blue));
711
712 delete colors;
713 }
714 #endif
715
716 return got;
717 }
718
719 void
720 rxvt_color::get (rgba &color)
721 {
722 #if XFT
723 color.r = c.color.red;
724 color.g = c.color.green;
725 color.b = c.color.blue;
726 color.a = c.color.alpha;
727 #else
728 color.r = c.red;
729 color.g = c.green;
730 color.b = c.blue;
731 color.a = rgba::MAX_CC;
732 #endif
733 }
734
735 void
736 rxvt_color::get (XColor &color)
737 {
738 rgba c;
739 get (c);
740
741 color.red = c.r;
742 color.green = c.g;
743 color.blue = c.b;
744 color.pixel = (Pixel)*this;
745 }
746
747 void
748 rxvt_color::free (rxvt_screen *screen)
749 {
750 #if XFT
751 XftColorFree (screen->xdisp, screen->visual, screen->cmap, &c);
752 #else
753 XFreeColors (screen->xdisp, screen->cmap, &c.pixel, 1, AllPlanes);
754 #endif
755 }
756
757 void
758 rxvt_color::fade (rxvt_screen *screen, int percent, rxvt_color &result, const rgba &to)
759 {
760 rgba c;
761 get (c);
762
763 result.set (
764 screen,
765 rgba (
766 lerp (c.r, to.r, percent),
767 lerp (c.g, to.g, percent),
768 lerp (c.b, to.b, percent),
769 lerp (c.a, to.a, percent)
770 )
771 );
772 }
773