1 /*----------------------------------------------------------------------*
3 *----------------------------------------------------------------------*
5 * All portions of code are copyright by their respective author/s.
6 * Copyright (c) 2003-2007 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, (char *)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 , selection_owner (0)
302 x_ev .set<rxvt_display, &rxvt_display::x_cb > (this);
303 flush_ev.set<rxvt_display, &rxvt_display::flush_cb> (this);
307 rxvt_display::get_resources (bool refresh)
309 char *homedir = getenv ("HOME");
313 * get resources using the X library function
315 char *displayResource, *xe;
316 XrmDatabase rdb1, database = 0;
318 // for ordering, see for example http://www.faqs.org/faqs/Xt-FAQ/ Subject: 20
319 // as opposed to "standard practise", we always read in ~/.Xdefaults
321 // 6. System wide per application default file.
323 /* Add in $XAPPLRESDIR/Rxvt only; not bothering with XUSERFILESEARCHPATH */
324 if ((xe = getenv ("XAPPLRESDIR")))
326 snprintf (fname, sizeof (fname), "%s/%s", xe, RESCLASS);
328 if ((rdb1 = XrmGetFileDatabase (fname)))
329 XrmMergeDatabases (rdb1, &database);
332 // 5. User's per application default file.
335 // 4. User's defaults file.
338 snprintf (fname, sizeof (fname), "%s/.Xdefaults", homedir);
340 if ((rdb1 = XrmGetFileDatabase (fname)))
341 XrmMergeDatabases (rdb1, &database);
344 /* Get any Xserver defaults */
347 // fucking xlib keeps a copy of the rm string
350 unsigned long nitems, nremaining;
353 #if XLIB_ILLEGAL_ACCESS
355 XFree (dpy->xdefaults);
358 if (XGetWindowProperty (dpy, RootWindow (dpy, 0), XA_RESOURCE_MANAGER,
359 0L, 100000000L, False,
360 XA_STRING, &actual_type, &actual_format,
361 &nitems, &nremaining,
362 (unsigned char **)&val) == Success
363 && actual_type == XA_STRING
364 && actual_format == 8)
365 displayResource = val;
374 #if XLIB_ILLEGAL_ACCESS
375 dpy->xdefaults = displayResource;
379 displayResource = XResourceManagerString (dpy);
383 if ((rdb1 = XrmGetStringDatabase (displayResource)))
384 XrmMergeDatabases (rdb1, &database);
387 #if !XLIB_ILLEGAL_ACCESS
388 if (refresh && displayResource)
389 XFree (displayResource);
392 /* Get screen specific resources */
393 displayResource = XScreenResourceString (ScreenOfDisplay (dpy, screen));
397 if ((rdb1 = XrmGetStringDatabase (displayResource)))
398 /* Merge with screen-independent resources */
399 XrmMergeDatabases (rdb1, &database);
401 XFree (displayResource);
404 // 3. User's per host defaults file
405 /* Add in XENVIRONMENT file */
406 if ((xe = getenv ("XENVIRONMENT"))
407 && (rdb1 = XrmGetFileDatabase (xe)))
408 XrmMergeDatabases (rdb1, &database);
415 snprintf (fname, sizeof (fname), "%s/.Xdefaults-%s", homedir, un.nodename);
417 if ((rdb1 = XrmGetFileDatabase (fname)))
418 XrmMergeDatabases (rdb1, &database);
425 bool rxvt_display::ref_init ()
427 #ifdef LOCAL_X_IS_UNIX
430 val = rxvt_malloc (5 + strlen (id) + 1);
431 strcpy (val, "unix/");
433 dpy = XOpenDisplay (val);
441 dpy = XOpenDisplay (id);
446 screen = DefaultScreen (dpy);
447 root = DefaultRootWindow (dpy);
449 assert (sizeof (xa_names) / sizeof (char *) == NUM_XA);
450 XInternAtoms (dpy, (char **)xa_names, NUM_XA, False, xa);
452 XrmSetDatabase (dpy, get_resources (false));
457 blackcolour.green = 0;
458 blackcolour.blue = 0;
459 Font f = XLoadFont (dpy, "fixed");
460 blank_cursor = XCreateGlyphCursor (dpy, f, f, ' ', ' ',
461 &blackcolour, &blackcolour);
462 XUnloadFont (dpy, f);
465 int fd = XConnectionNumber (dpy);
467 // try to detect wether we have a local connection.
468 // assume unix domain socket == local, everything else not
469 // TODO: might want to check for inet/127.0.0.1
472 socklen_t sl = sizeof (sa);
474 if (!getsockname (fd, (sockaddr *)&sa, &sl))
475 is_local = sa.sun_family == AF_UNIX;
478 x_ev.start (fd, ev::READ);
479 fcntl (fd, F_SETFD, FD_CLOEXEC);
481 XSelectInput (dpy, root, PropertyChangeMask);
489 rxvt_display::ref_next ()
491 // TODO: somehow check wether the database files/resources changed
492 // before affording re-loading/parsing
493 XrmDestroyDatabase (XrmGetDatabase (dpy));
494 XrmSetDatabase (dpy, get_resources (true));
497 rxvt_display::~rxvt_display ()
503 XFreeCursor (dpy, blank_cursor);
514 void rxvt_display::im_change_cb ()
516 for (im_watcher **i = imw.begin (); i != imw.end (); ++i)
520 void rxvt_display::im_change_check ()
522 // try to only call im_change_cb when a new input method
523 // registers, as xlib crashes due to a race otherwise.
524 Atom actual_type, *atoms;
526 unsigned long nitems, bytes_after;
528 if (XGetWindowProperty (dpy, root, xa[XA_XIM_SERVERS], 0L, 1000000L,
529 False, XA_ATOM, &actual_type, &actual_format,
530 &nitems, &bytes_after, (unsigned char **)&atoms)
534 if (actual_type == XA_ATOM && actual_format == 32)
535 for (int i = 0; i < nitems; i++)
536 if (XGetSelectionOwner (dpy, atoms[i]))
546 void rxvt_display::x_cb (ev::io &w, int revents)
548 while (XEventsQueued (dpy, QueuedAfterReading))
551 XNextEvent (dpy, &xev);
554 if (!XFilterEvent (&xev, None))
556 if (xev.type == PropertyNotify
557 && xev.xany.window == root
558 && xev.xproperty.atom == xa[XA_XIM_SERVERS])
561 if (xev.type == MappingNotify)
562 XRefreshKeyboardMapping (&xev.xmapping);
564 for (int i = xw.size (); i--; )
567 xw.erase_unordered (i);
568 else if (xw[i]->window == xev.xany.window)
577 void rxvt_display::flush_cb (ev::prepare &w, int revents)
579 while (XEventsQueued (dpy, QueuedAfterFlush))
580 x_cb (x_ev, EV_READ);
585 void rxvt_display::reg (xevent_watcher *w)
590 w->active = xw.size ();
594 void rxvt_display::unreg (xevent_watcher *w)
598 xw[w->active - 1] = 0;
603 void rxvt_display::set_selection_owner (rxvt_term *owner)
605 if (selection_owner && selection_owner != owner)
607 rxvt_term *owner = selection_owner;
609 owner->selection_clear ();
613 selection_owner = owner;
618 void rxvt_display::reg (im_watcher *w)
623 void rxvt_display::unreg (im_watcher *w)
625 imw.erase (find (imw.begin (), imw.end (), w));
628 rxvt_xim *rxvt_display::get_xim (const char *locale, const char *modifiers)
634 m = strlen (modifiers);
636 if (!(id = (char *)malloc (l + m + 2)))
639 memcpy (id, locale, l); id[l] = '\n';
640 memcpy (id + l + 1, modifiers, m); id[l + m + 1] = 0;
642 rxvt_xim *xim = xims.get (id);
649 void rxvt_display::put_xim (rxvt_xim *xim)
651 # if XLIB_IS_RACEFREE
658 Atom rxvt_display::atom (const char *name)
660 return XInternAtom (dpy, name, False);
663 /////////////////////////////////////////////////////////////////////////////
665 template class refcache<rxvt_display>;
666 refcache<rxvt_display> displays;
668 /////////////////////////////////////////////////////////////////////////////
672 insert_component (unsigned int value, unsigned int mask, unsigned int shift)
674 return (value * (mask + 1) >> 16) << shift;
678 rxvt_color::alloc (rxvt_screen *screen, const rgba &color)
680 //TODO: only supports 24 bit
681 int alpha = color.a >= 0xff00 ? 0xffff : color.a;
684 XRenderPictFormat *format;
686 // FUCKING Xft gets it wrong, of course, so work around it.
687 // Transparency users should eat shit and die, and then
688 // XRenderQueryPictIndexValues themselves plenty.
689 if ((screen->visual->c_class == TrueColor)
690 && (format = XRenderFindVisualFormat (screen->dpy, screen->visual)))
692 // the fun lies in doing everything manually...
693 c.color.red = color.r;
694 c.color.green = color.g;
695 c.color.blue = color.b;
696 c.color.alpha = alpha;
698 c.pixel = insert_component (color.r, format->direct.redMask , format->direct.red )
699 | insert_component (color.g, format->direct.greenMask, format->direct.green)
700 | insert_component (color.b, format->direct.blueMask , format->direct.blue )
701 | insert_component (alpha , format->direct.alphaMask, format->direct.alpha);
714 return XftColorAllocValue (screen->dpy, screen->visual, screen->cmap, &d, &c);
721 if (screen->visual->c_class == TrueColor)
723 c.pixel = (color.r >> (16 - popcount (screen->visual->red_mask )) << ctz (screen->visual->red_mask ))
724 | (color.g >> (16 - popcount (screen->visual->green_mask)) << ctz (screen->visual->green_mask))
725 | (color.b >> (16 - popcount (screen->visual->blue_mask )) << ctz (screen->visual->blue_mask ));
729 else if (XAllocColor (screen->dpy, screen->cmap, &c))
732 c.pixel = (color.r + color.g + color.b) > 128*3
733 ? WhitePixelOfScreen (DefaultScreenOfDisplay (screen->dpy))
734 : BlackPixelOfScreen (DefaultScreenOfDisplay (screen->dpy));
741 rxvt_color::set (rxvt_screen *screen, const char *name)
749 // parse the nonstandard "[alphapercent]" prefix
750 if (1 <= sscanf (name, "[%hd]%n", &c.a, &skip))
752 c.a = lerp<int, int, int> (0, rgba::MAX_CC, c.a);
756 // parse the non-standard "rgba:rrrr/gggg/bbbb/aaaa" format
757 if (strlen (name) != 4+5*4 || 4 != sscanf (name, "rgba:%4hx/%4hx/%4hx/%4hx%c", &c.r, &c.g, &c.b, &c.a, &eos))
761 if (XParseColor (screen->dpy, screen->cmap, name, &xc))
773 rxvt_warn ("unable to parse color '%s', using pink instead.\n", name);
777 return set (screen, c);
781 rxvt_color::set (rxvt_screen *screen, const rgba &color)
783 bool got = alloc (screen, color);
786 int cmap_size = screen->visual->map_entries;
789 && screen->visual->c_class == PseudoColor
792 XColor *colors = new XColor [screen->visual->map_entries];
794 for (int i = 0; i < cmap_size; i++)
795 colors [i].pixel = i;
797 // many kilobytes transfer per colour, but pseudocolor isn't worth
798 // many extra optimisations.
799 XQueryColors (screen->dpy, screen->cmap, colors, cmap_size);
801 int diff = 0x7fffffffUL;
802 XColor *best = colors;
804 for (int i = 0; i < cmap_size; i++)
806 int d = (squared_diff<int> (color.r >> 2, colors [i].red >> 2))
807 + (squared_diff<int> (color.g >> 2, colors [i].green >> 2))
808 + (squared_diff<int> (color.b >> 2, colors [i].blue >> 2));
817 //rxvt_warn ("could not allocate %04x %04x %04x, getting %04x %04x %04x instead (%d)\n",
818 // color.r, color.g, color.b, best->red, best->green, best->blue, diff);
820 got = alloc (screen, rgba (best->red, best->green, best->blue));
830 rxvt_color::get (rgba &color)
833 color.r = c.color.red;
834 color.g = c.color.green;
835 color.b = c.color.blue;
836 color.a = c.color.alpha;
841 color.a = rgba::MAX_CC;
846 rxvt_color::get (XColor &color)
854 color.pixel = (Pixel)*this;
858 rxvt_color::free (rxvt_screen *screen)
860 if (screen->visual->c_class == TrueColor)
861 return; // nothing to do
864 XftColorFree (screen->dpy, screen->visual, screen->cmap, &c);
866 XFreeColors (screen->dpy, screen->cmap, &c.pixel, 1, AllPlanes);
871 rxvt_color::fade (rxvt_screen *screen, int percent, rxvt_color &result, const rgba &to)
879 lerp (c.r, to.r, percent),
880 lerp (c.g, to.g, percent),
881 lerp (c.b, to.b, percent),
882 lerp (c.a, to.a, percent)
888 # undef XCreatePixmap
890 Pixmap trace_XCreatePixmap (const char *file, int line, Display *dpy, Window r, unsigned int w, unsigned int h, unsigned int d)
892 Pixmap res = XCreatePixmap (dpy, r, w, h, d);
893 fprintf (stderr, "%s:%d: XCreatePixmap (%p,%lX,%u,%u,%u) returned %lX\n", file, line, dpy, r, w, h, d, res);
897 void trace_XFreePixmap (const char *file, int line, Display *dpy, Pixmap p)
899 fprintf (stderr, "%s:%d: XFreePixmap (%p,%lX)\n", file, line, dpy, p);