1 /*----------------------------------------------------------------------*
3 *----------------------------------------------------------------------*
5 * All portions of code are copyright by their respective author/s.
6 * Copyright (c) 2003-2006 Marc Lehmann <pcg@goof.com>
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.
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.
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 *----------------------------------------------------------------------*/
23 #include "../config.h"
25 #include <rxvttoolkit.h>
30 #include <sys/utsname.h>
31 #include <sys/socket.h>
35 # include <X11/extensions/Xrender.h>
38 const char *const xa_names[] =
69 #ifdef ENABLE_TRANSPARENCY
79 "XDCCC_LINEAR_RGB_CORRECTION",
80 "XDCCC_LINEAR_RGB_MATRICES",
81 "WM_COLORMAP_WINDOWS",
94 /////////////////////////////////////////////////////////////////////////////
96 refcounted::refcounted (const char *id)
98 this->id = strdup (id);
101 refcounted::~refcounted ()
107 T *refcache<T>::get (const char *id)
109 for (T **i = this->begin (); i < this->end (); ++i)
111 if (!strcmp (id, (*i)->id))
121 if (obj && obj->ref_init ())
124 this->push_back (obj);
135 void refcache<T>::put (T *obj)
140 if (!--obj->referenced)
142 this->erase (find (this->begin (), this->end (), obj));
148 void refcache<T>::clear ()
150 while (this->size ())
151 put (*this->begin ());
154 /////////////////////////////////////////////////////////////////////////////
159 #if XIMCB_PROTO_BROKEN
160 im_destroy_cb (XIC unused1, XPointer client_data, XPointer unused3)
162 im_destroy_cb (XIM unused1, XPointer client_data, XPointer unused3)
165 rxvt_xim *xim = (rxvt_xim *)client_data;
166 rxvt_display *display = xim->display;
170 display->xims.erase (find (display->xims.begin (), display->xims.end (), xim));
171 display->im_change_cb ();
175 rxvt_xim::ref_init ()
177 display = GET_R->display; //HACK: TODO
179 xim = XOpenIM (display->dpy, 0, 0, 0);
184 XIMCallback ximcallback;
185 ximcallback.client_data = (XPointer)this;
186 ximcallback.callback = im_destroy_cb;
188 XSetIMValues (xim, XNDestroyCallback, &ximcallback, 0);
193 rxvt_xim::~rxvt_xim ()
201 /////////////////////////////////////////////////////////////////////////////
204 rxvt_drawable::~rxvt_drawable ()
207 XftDrawDestroy (xftdrawable);
210 rxvt_drawable::operator XftDraw *()
213 xftdrawable = XftDrawCreate (screen->dpy, drawable, screen->visual, screen->cmap);
219 /////////////////////////////////////////////////////////////////////////////
223 // not strictly necessary as it is only used with superclass of zero_initialised
224 rxvt_screen::rxvt_screen ()
229 rxvt_drawable &rxvt_screen::scratch_drawable (int w, int h)
231 // it's actually faster to re-allocate every time. don't ask me
232 // why, but its likely no big deal there are no roundtrips
234 if (!scratch_area || w > scratch_w || h > scratch_h || 1/*D*/)
238 XFreePixmap (dpy, scratch_area->drawable);
242 Pixmap pm = XCreatePixmap (dpy, RootWindowOfScreen (ScreenOfDisplay (dpy, display->screen)),
243 scratch_w = w, scratch_h = h, depth);
245 scratch_area = new rxvt_drawable (this, pm);
248 return *scratch_area;
254 rxvt_screen::set (rxvt_display *disp)
259 Screen *screen = ScreenOfDisplay (dpy, disp->screen);
261 depth = DefaultDepthOfScreen (screen);
262 visual = DefaultVisualOfScreen (screen);
263 cmap = DefaultColormapOfScreen (screen);
267 rxvt_screen::select_visual (int bitdepth)
272 if (XMatchVisualInfo (dpy, display->screen, bitdepth, TrueColor, &vinfo))
275 visual = vinfo.visual;
276 cmap = XCreateColormap (dpy, display->root, visual, AllocNone);
282 rxvt_screen::clear ()
287 XFreePixmap (dpy, scratch_area->drawable);
292 if (cmap != DefaultColormapOfScreen (ScreenOfDisplay (dpy, display->screen)))
293 XFreeColormap (dpy, cmap);
296 /////////////////////////////////////////////////////////////////////////////
298 rxvt_display::rxvt_display (const char *id)
300 , x_ev (this, &rxvt_display::x_cb)
301 , selection_owner (0)
306 rxvt_display::get_resources (bool refresh)
308 char *homedir = (char *)getenv ("HOME");
312 * get resources using the X library function
314 char *displayResource, *xe;
315 XrmDatabase rdb1, database = 0;
317 // for ordering, see for example http://www.faqs.org/faqs/Xt-FAQ/ Subject: 20
318 // as opposed to "standard practise", we always read in ~/.Xdefaults
320 // 6. System wide per application default file.
322 /* Add in $XAPPLRESDIR/Rxvt only; not bothering with XUSERFILESEARCHPATH */
323 if ((xe = (char *)getenv ("XAPPLRESDIR")))
325 snprintf (fname, sizeof (fname), "%s/%s", xe, RESCLASS);
327 if ((rdb1 = XrmGetFileDatabase (fname)))
328 XrmMergeDatabases (rdb1, &database);
331 // 5. User's per application default file.
334 // 4. User's defaults file.
337 snprintf (fname, sizeof (fname), "%s/.Xdefaults", homedir);
339 if ((rdb1 = XrmGetFileDatabase (fname)))
340 XrmMergeDatabases (rdb1, &database);
343 /* Get any Xserver defaults */
346 // fucking xlib keeps a copy of the rm string
349 unsigned long nitems, nremaining;
352 #if XLIB_ILLEGAL_ACCESS
354 XFree (dpy->xdefaults);
357 if (XGetWindowProperty (dpy, RootWindow (dpy, 0), XA_RESOURCE_MANAGER,
358 0L, 100000000L, False,
359 XA_STRING, &actual_type, &actual_format,
360 &nitems, &nremaining,
361 (unsigned char **)&val) == Success
362 && actual_type == XA_STRING
363 && actual_format == 8)
364 displayResource = val;
373 #if XLIB_ILLEGAL_ACCESS
374 dpy->xdefaults = displayResource;
378 displayResource = XResourceManagerString (dpy);
382 if ((rdb1 = XrmGetStringDatabase (displayResource)))
383 XrmMergeDatabases (rdb1, &database);
386 #if !XLIB_ILLEGAL_ACCESS
387 if (refresh && displayResource)
388 XFree (displayResource);
391 /* Get screen specific resources */
392 displayResource = XScreenResourceString (ScreenOfDisplay (dpy, screen));
396 if ((rdb1 = XrmGetStringDatabase (displayResource)))
397 /* Merge with screen-independent resources */
398 XrmMergeDatabases (rdb1, &database);
400 XFree (displayResource);
403 // 3. User's per host defaults file
404 /* Add in XENVIRONMENT file */
405 if ((xe = (char *)getenv ("XENVIRONMENT"))
406 && (rdb1 = XrmGetFileDatabase (xe)))
407 XrmMergeDatabases (rdb1, &database);
414 snprintf (fname, sizeof (fname), "%s/.Xdefaults-%s", homedir, un.nodename);
416 if ((rdb1 = XrmGetFileDatabase (fname)))
417 XrmMergeDatabases (rdb1, &database);
424 bool rxvt_display::ref_init ()
426 #ifdef LOCAL_X_IS_UNIX
429 val = rxvt_malloc (5 + strlen (id) + 1);
430 strcpy (val, "unix/");
432 dpy = XOpenDisplay (val);
440 dpy = XOpenDisplay (id);
445 screen = DefaultScreen (dpy);
446 root = DefaultRootWindow (dpy);
448 #ifdef HAVE_AFTERIMAGE
449 ::dpy = dpy; /* init global var from libAfter... */
450 asv = create_asvisual_for_id (dpy, screen, DefaultDepth (dpy,screen),
451 XVisualIDFromVisual (DefaultVisual (dpy, screen)), None, NULL);
454 assert (sizeof (xa_names) / sizeof (char *) == NUM_XA);
455 XInternAtoms (dpy, (char **)xa_names, NUM_XA, False, xa);
457 XrmSetDatabase (dpy, get_resources (false));
462 blackcolour.green = 0;
463 blackcolour.blue = 0;
464 Font f = XLoadFont (dpy, "fixed");
465 blank_cursor = XCreateGlyphCursor (dpy, f, f, ' ', ' ',
466 &blackcolour, &blackcolour);
467 XUnloadFont (dpy, f);
470 int fd = XConnectionNumber (dpy);
472 // try to detect wether we have a local connection.
473 // assume unix domains socket == local, everything else not
474 // TODO: might want to check for inet/127.0.0.1
477 socklen_t sl = sizeof (sa);
479 if (!getsockname (fd, (sockaddr *)&sa, &sl))
480 is_local = sa.sun_family == AF_UNIX;
482 x_ev.start (fd, EVENT_READ);
483 fcntl (fd, F_SETFD, FD_CLOEXEC);
485 XSelectInput (dpy, root, PropertyChangeMask);
493 rxvt_display::ref_next ()
495 // TODO: somehow check wether the database files/resources changed
496 // before affording re-loading/parsing
497 XrmDestroyDatabase (XrmGetDatabase (dpy));
498 XrmSetDatabase (dpy, get_resources (true));
501 rxvt_display::~rxvt_display ()
507 XFreeCursor (dpy, blank_cursor);
517 void rxvt_display::im_change_cb ()
519 for (im_watcher **i = imw.begin (); i != imw.end (); ++i)
523 void rxvt_display::im_change_check ()
525 // try to only call im_change_cb when a new input method
526 // registers, as xlib crashes due to a race otherwise.
527 Atom actual_type, *atoms;
529 unsigned long nitems, bytes_after;
531 if (XGetWindowProperty (dpy, root, xa[XA_XIM_SERVERS], 0L, 1000000L,
532 False, XA_ATOM, &actual_type, &actual_format,
533 &nitems, &bytes_after, (unsigned char **)&atoms)
537 if (actual_type == XA_ATOM && actual_format == 32)
538 for (int i = 0; i < nitems; i++)
539 if (XGetSelectionOwner (dpy, atoms[i]))
549 void rxvt_display::x_cb (io_watcher &w, short revents)
554 XNextEvent (dpy, &xev);
557 if (!XFilterEvent (&xev, None))
559 if (xev.type == PropertyNotify
560 && xev.xany.window == root
561 && xev.xproperty.atom == xa[XA_XIM_SERVERS])
564 for (int i = xw.size (); i--; )
567 xw.erase_unordered (i);
568 else if (xw[i]->window == xev.xany.window)
575 while (XEventsQueued (dpy, QueuedAlready));
580 void rxvt_display::flush ()
582 if (XEventsQueued (dpy, QueuedAlready))
583 x_cb (x_ev, EVENT_READ);
588 void rxvt_display::reg (xevent_watcher *w)
593 w->active = xw.size ();
597 void rxvt_display::unreg (xevent_watcher *w)
601 xw[w->active - 1] = 0;
606 void rxvt_display::set_selection_owner (rxvt_term *owner)
608 if (selection_owner && selection_owner != owner)
609 selection_owner->selection_clear ();
611 selection_owner = owner;
616 void rxvt_display::reg (im_watcher *w)
621 void rxvt_display::unreg (im_watcher *w)
623 imw.erase (find (imw.begin (), imw.end (), w));
626 rxvt_xim *rxvt_display::get_xim (const char *locale, const char *modifiers)
632 m = strlen (modifiers);
634 if (!(id = (char *)malloc (l + m + 2)))
637 memcpy (id, locale, l); id[l] = '\n';
638 memcpy (id + l + 1, modifiers, m); id[l + m + 1] = 0;
640 rxvt_xim *xim = xims.get (id);
647 void rxvt_display::put_xim (rxvt_xim *xim)
649 # if XLIB_IS_RACEFREE
656 Atom rxvt_display::atom (const char *name)
658 return XInternAtom (dpy, name, False);
661 /////////////////////////////////////////////////////////////////////////////
663 template class refcache<rxvt_display>;
664 refcache<rxvt_display> displays;
666 /////////////////////////////////////////////////////////////////////////////
670 insert_component (unsigned int value, unsigned int mask, unsigned int shift)
672 return (value * (mask + 1) >> 16) << shift;
676 rxvt_color::alloc (rxvt_screen *screen, const rgba &color)
679 XRenderPictFormat *format;
681 // FUCKING Xft gets it wrong, of course, so work around it.
682 // Transparency users should eat shit and die, and then
683 // XRenderQueryPictIndexValues themselves plenty.
684 if ((screen->visual->c_class == TrueColor)
685 && (format = XRenderFindVisualFormat (screen->dpy, screen->visual)))
687 // the fun lies in doing everything manually...
688 c.color.red = color.r;
689 c.color.green = color.g;
690 c.color.blue = color.b;
691 c.color.alpha = color.a;
693 c.pixel = insert_component (color.r, format->direct.redMask , format->direct.red )
694 | insert_component (color.g, format->direct.greenMask, format->direct.green)
695 | insert_component (color.b, format->direct.blueMask , format->direct.blue )
696 | insert_component (color.a, format->direct.alphaMask, format->direct.alpha);
709 return XftColorAllocValue (screen->dpy, screen->visual, screen->cmap, &d, &c);
716 if (screen->visual->c_class == TrueColor)
718 c.pixel = (color.r >> (16 - popcount (screen->visual->red_mask )) << ctz (screen->visual->red_mask ))
719 | (color.g >> (16 - popcount (screen->visual->green_mask)) << ctz (screen->visual->green_mask))
720 | (color.b >> (16 - popcount (screen->visual->blue_mask )) << ctz (screen->visual->blue_mask ));
724 else if (XAllocColor (screen->dpy, screen->cmap, &c))
727 c.pixel = (color.r + color.g + color.b) > 128*3
728 ? WhitePixelOfScreen (DefaultScreenOfDisplay (screen->dpy))
729 : BlackPixelOfScreen (DefaultScreenOfDisplay (screen->dpy));
736 rxvt_color::set (rxvt_screen *screen, const char *name)
742 // parse the nonstandard "[alphapercent]" prefix
743 if (1 <= sscanf (name, "[%hd]%n", &c.a, &skip))
745 c.a = lerp<int, int, int> (0, rgba::MAX_CC, c.a);
751 // parse the non-standard "rgba:rrrr/gggg/bbbb/aaaa" format
752 if (strlen (name) != 4+5*4 || 4 != sscanf (name, "rgba:%4hx/%4hx/%4hx/%4hx%c", &c.r, &c.g, &c.b, &c.a, &eos))
756 if (XParseColor (screen->dpy, screen->cmap, name, &xc))
768 rxvt_warn ("unable to parse color '%s', using pink instead.\n", name);
772 return set (screen, c);
776 rxvt_color::set (rxvt_screen *screen, const rgba &color)
778 bool got = alloc (screen, color);
781 int cmap_size = screen->visual->map_entries;
784 && screen->visual->c_class == PseudoColor
787 XColor *colors = new XColor [screen->visual->map_entries];
789 for (int i = 0; i < cmap_size; i++)
790 colors [i].pixel = i;
792 // many kilobytes transfer per colour, but pseudocolor isn't worth
793 // many extra optimisations.
794 XQueryColors (screen->dpy, screen->cmap, colors, cmap_size);
796 int diff = 0x7fffffffUL;
797 XColor *best = colors;
799 for (int i = 0; i < cmap_size; i++)
801 int d = (squared_diff<int> (color.r >> 2, colors [i].red >> 2))
802 + (squared_diff<int> (color.g >> 2, colors [i].green >> 2))
803 + (squared_diff<int> (color.b >> 2, colors [i].blue >> 2));
812 //rxvt_warn ("could not allocate %04x %04x %04x, getting %04x %04x %04x instead (%d)\n",
813 // color.r, color.g, color.b, best->red, best->green, best->blue, diff);
815 got = alloc (screen, rgba (best->red, best->green, best->blue));
825 rxvt_color::get (rgba &color)
828 color.r = c.color.red;
829 color.g = c.color.green;
830 color.b = c.color.blue;
831 color.a = c.color.alpha;
836 color.a = rgba::MAX_CC;
841 rxvt_color::get (XColor &color)
849 color.pixel = (Pixel)*this;
853 rxvt_color::free (rxvt_screen *screen)
855 if (screen->visual->c_class == TrueColor)
856 return; // nothing to do
859 XftColorFree (screen->dpy, screen->visual, screen->cmap, &c);
861 XFreeColors (screen->dpy, screen->cmap, &c.pixel, 1, AllPlanes);
866 rxvt_color::fade (rxvt_screen *screen, int percent, rxvt_color &result, const rgba &to)
874 lerp (c.r, to.r, percent),
875 lerp (c.g, to.g, percent),
876 lerp (c.b, to.b, percent),
877 lerp (c.a, to.a, percent)