2 * awesome.c - awesome main functions
4 * Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
29 #include <sys/select.h>
30 #include <sys/types.h>
32 #include <sys/socket.h>
36 #include <X11/cursorfont.h>
37 #include <X11/keysym.h>
38 #include <X11/Xatom.h>
39 #include <X11/Xproto.h>
40 #include <X11/Xutil.h>
41 #include <X11/extensions/shape.h>
42 #include <X11/extensions/Xrandr.h>
49 #include "statusbar.h"
56 #include "common/socket.h"
57 #include "common/util.h"
58 #include "common/version.h"
59 #include "common/configopts.h"
61 static int (*xerrorxlib
) (Display
*, XErrorEvent
*);
62 static Bool running
= True
;
64 AwesomeConf globalconf
;
66 /** Scan X to find windows to manage
72 int screen
, real_screen
;
73 Window
*wins
= NULL
, d1
, d2
;
76 for(screen
= 0; screen
< ScreenCount(globalconf
.display
); screen
++)
78 if(XQueryTree(globalconf
.display
, RootWindow(globalconf
.display
, screen
), &d1
, &d2
, &wins
, &num
))
80 for(i
= 0; i
< num
; i
++)
82 /* XGetWindowAttributes return 1 on success */
83 if(!XGetWindowAttributes(globalconf
.display
, wins
[i
], &wa
)
84 || wa
.override_redirect
85 || XGetTransientForHint(globalconf
.display
, wins
[i
], &d1
))
87 if(wa
.map_state
== IsViewable
|| window_getstate(wins
[i
]) == IconicState
)
89 real_screen
= screen_get_bycoord(screen
, wa
.x
, wa
.y
);
90 client_manage(wins
[i
], &wa
, real_screen
);
93 /* now the transients */
94 for(i
= 0; i
< num
; i
++)
96 if(!XGetWindowAttributes(globalconf
.display
, wins
[i
], &wa
))
98 if(XGetTransientForHint(globalconf
.display
, wins
[i
], &d1
)
99 && (wa
.map_state
== IsViewable
|| window_getstate(wins
[i
]) == IconicState
))
101 real_screen
= screen_get_bycoord(screen
, wa
.x
, wa
.y
);
102 client_manage(wins
[i
], &wa
, real_screen
);
111 /** Startup Error handler to check if another window manager
112 * is already running.
113 * \param disp Display
114 * \param ee Error event
116 static int __attribute__ ((noreturn
))
117 xerrorstart(Display
* disp
__attribute__ ((unused
)),
118 XErrorEvent
* ee
__attribute__ ((unused
)))
120 eprint("another window manager is already running\n");
124 * \param screen Screen ID
126 * \ingroup ui_callback
129 uicb_quit(int screen
__attribute__ ((unused
)), char *arg
__attribute__ ((unused
)))
135 exit_on_signal(int sig
__attribute__ ((unused
)))
140 /** \brief awesome xerror function
141 * There's no way to check accesses to destroyed windows, thus those cases are
142 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
143 * default error handler, which may call exit.
144 * \param edpy display ref
145 * \param ee XErrorEvent event
146 * \return 0 if no error, or xerror's xlib return status
149 xerror(Display
*edpy
, XErrorEvent
*ee
)
151 if(ee
->error_code
== BadWindow
152 || (ee
->error_code
== BadMatch
&& ee
->request_code
== X_SetInputFocus
)
153 || (ee
->error_code
== BadValue
&& ee
->request_code
== X_KillClient
)
154 || (ee
->request_code
== X_ConfigureWindow
&& ee
->error_code
== BadMatch
))
156 warn("fatal error: request code=%d, error code=%d\n", ee
->request_code
, ee
->error_code
);
157 return xerrorxlib(edpy
, ee
); /* may call exit */
160 /** Print help and exit(2) with given exit_code.
162 static void __attribute__ ((noreturn
))
163 exit_help(int exit_code
)
165 FILE *outfile
= (exit_code
== EXIT_SUCCESS
) ? stdout
: stderr
;
167 "Usage: awesome [OPTION]\n\
168 -h, --help show help\n\
169 -v, --version show version\n\
170 -c, --config FILE configuration file to use\n\
171 -k, --check check configuration file syntax\n");
175 /** Hello, this is main
176 * \param argc who knows
177 * \param argv who knows
178 * \return EXIT_SUCCESS I hope
180 typedef void event_handler (XEvent
*);
182 main(int argc
, char *argv
[])
185 const char *confpath
= NULL
;
186 int r
, xfd
, e_dummy
, csfd
, shape_event
, randr_event_base
, i
, screen
, opt
;
188 Statusbar
*statusbar
;
192 event_handler
**handler
;
193 struct sockaddr_un
*addr
;
195 XSetWindowAttributes wa
;
196 static struct option long_options
[] =
198 {"help", 0, NULL
, 'h'},
199 {"version", 0, NULL
, 'v'},
200 {"check", 0, NULL
, 'k'},
201 {"config", 0, NULL
, 'c'},
206 for(i
= 0; i
< argc
; i
++)
207 cmdlen
+= a_strlen(argv
[i
]) + 1;
209 globalconf
.argv
= p_new(char, cmdlen
);
210 a_strcpy(globalconf
.argv
, cmdlen
, argv
[0]);
212 for(i
= 1; i
< argc
; i
++)
214 a_strcat(globalconf
.argv
, cmdlen
, " ");
215 a_strcat(globalconf
.argv
, cmdlen
, argv
[i
]);
219 while((opt
= getopt_long(argc
, argv
, "vhkc:",
220 long_options
, NULL
)) != -1)
224 eprint_version("awesome");
227 exit_help(EXIT_SUCCESS
);
233 eprint("-c option requires a file name\n");
236 return config_check(confpath
);
240 /* Text won't be printed correctly otherwise */
241 setlocale(LC_CTYPE
, "");
244 if(!(dpy
= XOpenDisplay(NULL
)))
245 eprint("cannot open display\n");
247 xfd
= ConnectionNumber(dpy
);
249 XSetErrorHandler(xerrorstart
);
250 for(screen
= 0; screen
< ScreenCount(dpy
); screen
++)
251 /* this causes an error if some other window manager is running */
252 XSelectInput(dpy
, RootWindow(dpy
, screen
), SubstructureRedirectMask
);
254 /* need to XSync to validate errorhandler */
256 XSetErrorHandler(NULL
);
257 xerrorxlib
= XSetErrorHandler(xerror
);
261 globalconf
.display
= dpy
;
263 /* init EWMH atoms */
266 /* init screens struct */
267 screen_build_screens();
268 focus_add_client(NULL
);
271 config_parse(confpath
);
273 /* scan existing windows */
277 globalconf
.cursor
[CurNormal
] = XCreateFontCursor(globalconf
.display
, XC_left_ptr
);
278 globalconf
.cursor
[CurResize
] = XCreateFontCursor(globalconf
.display
, XC_sizing
);
279 globalconf
.cursor
[CurMove
] = XCreateFontCursor(globalconf
.display
, XC_fleur
);
281 /* for each virtual screen */
282 for(screen
= 0; screen
< globalconf
.nscreen
; screen
++)
284 /* view at least one tag */
285 tag_view(globalconf
.screens
[screen
].tags
, True
);
287 for(statusbar
= globalconf
.screens
[screen
].statusbar
; statusbar
; statusbar
= statusbar
->next
)
288 statusbar_init(statusbar
);
291 /* select for events */
292 wa
.event_mask
= SubstructureRedirectMask
| SubstructureNotifyMask
293 | EnterWindowMask
| LeaveWindowMask
| StructureNotifyMask
| PointerMotionMask
;
294 wa
.cursor
= globalconf
.cursor
[CurNormal
];
296 /* do this only for real screen */
297 for(screen
= 0; screen
< ScreenCount(dpy
); screen
++)
299 XChangeWindowAttributes(globalconf
.display
,
300 RootWindow(globalconf
.display
, screen
),
301 CWEventMask
| CWCursor
, &wa
);
302 XSelectInput(globalconf
.display
,
303 RootWindow(globalconf
.display
, screen
),
305 ewmh_set_supported_hints(screen
);
306 /* call this to at least grab root window clicks */
307 window_root_grabbuttons(screen
);
308 window_root_grabkeys(screen
);
311 handler
= p_new(event_handler
*, LASTEvent
);
312 handler
[ButtonPress
] = event_handle_buttonpress
;
313 handler
[ConfigureRequest
] = event_handle_configurerequest
;
314 handler
[ConfigureNotify
] = event_handle_configurenotify
;
315 handler
[DestroyNotify
] = event_handle_destroynotify
;
316 handler
[EnterNotify
] = event_handle_enternotify
;
317 handler
[LeaveNotify
] = event_handle_leavenotify
;
318 handler
[MotionNotify
] = event_handle_motionnotify
;
319 handler
[Expose
] = event_handle_expose
;
320 handler
[KeyPress
] = event_handle_keypress
;
321 handler
[MappingNotify
] = event_handle_mappingnotify
;
322 handler
[MapRequest
] = event_handle_maprequest
;
323 handler
[PropertyNotify
] = event_handle_propertynotify
;
324 handler
[UnmapNotify
] = event_handle_unmapnotify
;
325 handler
[ClientMessage
] = event_handle_clientmessage
;
327 /* check for shape extension */
328 if((globalconf
.have_shape
= XShapeQueryExtension(dpy
, &shape_event
, &e_dummy
)))
330 p_realloc(&handler
, shape_event
+ 1);
331 handler
[shape_event
] = event_handle_shape
;
334 /* check for randr extension */
335 if((globalconf
.have_randr
= XRRQueryExtension(dpy
, &randr_event_base
, &e_dummy
)))
337 p_realloc(&handler
, randr_event_base
+ RRScreenChangeNotify
+ 1);
338 handler
[randr_event_base
+ RRScreenChangeNotify
] = event_handle_randr_screen_change_notify
;
344 csfd
= get_client_socket();
345 addr
= get_client_addr(getenv("DISPLAY"));
347 if(bind(csfd
, (const struct sockaddr
*) addr
, SUN_LEN(addr
)))
349 if(errno
== EADDRINUSE
)
351 if(unlink(addr
->sun_path
))
352 perror("error unlinking existing file");
353 if(bind(csfd
, (const struct sockaddr
*) addr
, SUN_LEN(addr
)))
354 perror("error binding UNIX domain socket");
357 perror("error binding UNIX domain socket");
360 /* register function for signals */
361 signal(SIGINT
, &exit_on_signal
);
362 signal(SIGTERM
, &exit_on_signal
);
363 signal(SIGHUP
, &exit_on_signal
);
365 /* refresh everything before waiting events */
369 /* main event loop, also reads status text from socket */
376 if(select(MAX(xfd
, csfd
) + 1, &rd
, NULL
, NULL
, NULL
) == -1)
380 eprint("select failed\n");
382 if(csfd
>= 0 && FD_ISSET(csfd
, &rd
))
383 switch (r
= recv(csfd
, buf
, sizeof(buf
)-1, MSG_TRUNC
))
386 perror("awesome: error reading UNIX domain socket");
392 if(r
>= ssizeof(buf
))
399 /* two level XPending:
400 * we need to first check we have XEvent to handle
401 * and if so, we handle them all in a round.
402 * Then when we have refresh()'ed stuff so maybe new XEvent
403 * are available and select() won't tell us, so let's check
404 * with XPending() again.
410 XNextEvent(dpy
, &ev
);
412 handler
[ev
.type
](&ev
);
427 if(csfd
> 0 && close(csfd
))
428 perror("error closing UNIX domain socket");
429 if(unlink(addr
->sun_path
))
430 perror("error unlinking UNIX domain socket");
433 /* remap all clients since some WM won't handle them otherwise */
434 for(c
= globalconf
.clients
; c
; c
= c
->next
)
437 XSync(globalconf
.display
, False
);
443 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80