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"
60 #include "common/xscreen.h"
62 static int (*xerrorxlib
) (Display
*, XErrorEvent
*);
63 static Bool running
= True
;
65 AwesomeConf globalconf
;
67 /** Scan X to find windows to manage
73 int screen
, real_screen
;
74 Window
*wins
= NULL
, d1
, d2
;
77 for(screen
= 0; screen
< ScreenCount(globalconf
.display
); screen
++)
79 if(XQueryTree(globalconf
.display
, RootWindow(globalconf
.display
, screen
), &d1
, &d2
, &wins
, &num
))
81 for(i
= 0; i
< num
; i
++)
83 /* XGetWindowAttributes return 1 on success */
84 if(!XGetWindowAttributes(globalconf
.display
, wins
[i
], &wa
)
85 || wa
.override_redirect
86 || XGetTransientForHint(globalconf
.display
, wins
[i
], &d1
))
88 if(wa
.map_state
== IsViewable
|| window_getstate(wins
[i
]) == IconicState
)
90 real_screen
= screen_get_bycoord(globalconf
.screens_info
, screen
, wa
.x
, wa
.y
);
91 client_manage(wins
[i
], &wa
, real_screen
);
94 /* now the transients */
95 for(i
= 0; i
< num
; i
++)
97 if(!XGetWindowAttributes(globalconf
.display
, wins
[i
], &wa
))
99 if(XGetTransientForHint(globalconf
.display
, wins
[i
], &d1
)
100 && (wa
.map_state
== IsViewable
|| window_getstate(wins
[i
]) == IconicState
))
102 real_screen
= screen_get_bycoord(globalconf
.screens_info
, screen
, wa
.x
, wa
.y
);
103 client_manage(wins
[i
], &wa
, real_screen
);
112 /** Startup Error handler to check if another window manager
113 * is already running.
114 * \param disp Display
115 * \param ee Error event
117 static int __attribute__ ((noreturn
))
118 xerrorstart(Display
* disp
__attribute__ ((unused
)),
119 XErrorEvent
* ee
__attribute__ ((unused
)))
121 eprint("another window manager is already running\n");
125 * \param screen Screen ID
127 * \ingroup ui_callback
130 uicb_quit(int screen
__attribute__ ((unused
)), char *arg
__attribute__ ((unused
)))
136 exit_on_signal(int sig
__attribute__ ((unused
)))
141 /** \brief awesome xerror function
142 * There's no way to check accesses to destroyed windows, thus those cases are
143 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
144 * default error handler, which may call exit.
145 * \param edpy display ref
146 * \param ee XErrorEvent event
147 * \return 0 if no error, or xerror's xlib return status
150 xerror(Display
*edpy
, XErrorEvent
*ee
)
152 if(ee
->error_code
== BadWindow
153 || (ee
->error_code
== BadMatch
&& ee
->request_code
== X_SetInputFocus
)
154 || (ee
->error_code
== BadValue
&& ee
->request_code
== X_KillClient
)
155 || (ee
->request_code
== X_ConfigureWindow
&& ee
->error_code
== BadMatch
))
157 warn("fatal error: request code=%d, error code=%d\n", ee
->request_code
, ee
->error_code
);
158 return xerrorxlib(edpy
, ee
); /* may call exit */
161 /** Print help and exit(2) with given exit_code.
163 static void __attribute__ ((noreturn
))
164 exit_help(int exit_code
)
166 FILE *outfile
= (exit_code
== EXIT_SUCCESS
) ? stdout
: stderr
;
168 "Usage: awesome [OPTION]\n\
169 -h, --help show help\n\
170 -v, --version show version\n\
171 -c, --config FILE configuration file to use\n\
172 -k, --check check configuration file syntax\n");
176 /** Hello, this is main
177 * \param argc who knows
178 * \param argv who knows
179 * \return EXIT_SUCCESS I hope
181 typedef void event_handler (XEvent
*);
183 main(int argc
, char *argv
[])
186 const char *confpath
= NULL
;
187 int r
, xfd
, e_dummy
, csfd
, shape_event
, randr_event_base
, i
, screen
, opt
;
189 Statusbar
*statusbar
;
193 event_handler
**handler
;
194 struct sockaddr_un
*addr
;
196 XSetWindowAttributes wa
;
197 static struct option long_options
[] =
199 {"help", 0, NULL
, 'h'},
200 {"version", 0, NULL
, 'v'},
201 {"check", 0, NULL
, 'k'},
202 {"config", 0, NULL
, 'c'},
207 for(i
= 0; i
< argc
; i
++)
208 cmdlen
+= a_strlen(argv
[i
]) + 1;
210 globalconf
.argv
= p_new(char, cmdlen
);
211 a_strcpy(globalconf
.argv
, cmdlen
, argv
[0]);
213 for(i
= 1; i
< argc
; i
++)
215 a_strcat(globalconf
.argv
, cmdlen
, " ");
216 a_strcat(globalconf
.argv
, cmdlen
, argv
[i
]);
220 while((opt
= getopt_long(argc
, argv
, "vhkc:",
221 long_options
, NULL
)) != -1)
225 eprint_version("awesome");
228 exit_help(EXIT_SUCCESS
);
234 eprint("-c option requires a file name\n");
237 return config_check(confpath
);
241 /* Text won't be printed correctly otherwise */
242 setlocale(LC_CTYPE
, "");
245 if(!(dpy
= XOpenDisplay(NULL
)))
246 eprint("cannot open display\n");
248 xfd
= ConnectionNumber(dpy
);
250 XSetErrorHandler(xerrorstart
);
251 for(screen
= 0; screen
< ScreenCount(dpy
); screen
++)
252 /* this causes an error if some other window manager is running */
253 XSelectInput(dpy
, RootWindow(dpy
, screen
), SubstructureRedirectMask
);
255 /* need to XSync to validate errorhandler */
257 XSetErrorHandler(NULL
);
258 xerrorxlib
= XSetErrorHandler(xerror
);
262 globalconf
.display
= dpy
;
264 /* init EWMH atoms */
267 /* init screens struct */
268 globalconf
.screens_info
= screensinfo_new(dpy
);
269 globalconf
.screens
= p_new(VirtScreen
, globalconf
.screens_info
->nscreen
);
270 focus_add_client(NULL
);
273 config_parse(confpath
);
276 globalconf
.cursor
[CurNormal
] = XCreateFontCursor(globalconf
.display
, XC_left_ptr
);
277 globalconf
.cursor
[CurResize
] = XCreateFontCursor(globalconf
.display
, XC_sizing
);
278 globalconf
.cursor
[CurMove
] = XCreateFontCursor(globalconf
.display
, XC_fleur
);
280 /* for each virtual screen */
281 for(screen
= 0; screen
< globalconf
.screens_info
->nscreen
; screen
++)
283 /* view at least one tag */
284 tag_view(globalconf
.screens
[screen
].tags
, True
);
286 for(statusbar
= globalconf
.screens
[screen
].statusbar
; statusbar
; statusbar
= statusbar
->next
)
287 statusbar_init(statusbar
);
290 /* select for events */
291 wa
.event_mask
= SubstructureRedirectMask
| SubstructureNotifyMask
292 | EnterWindowMask
| LeaveWindowMask
| StructureNotifyMask
| PointerMotionMask
;
293 wa
.cursor
= globalconf
.cursor
[CurNormal
];
295 /* do this only for real screen */
296 for(screen
= 0; screen
< ScreenCount(dpy
); screen
++)
298 XChangeWindowAttributes(globalconf
.display
,
299 RootWindow(globalconf
.display
, screen
),
300 CWEventMask
| CWCursor
, &wa
);
301 XSelectInput(globalconf
.display
,
302 RootWindow(globalconf
.display
, screen
),
304 ewmh_set_supported_hints(screen
);
305 /* call this to at least grab root window clicks */
306 window_root_grabbuttons(screen
);
307 window_root_grabkeys(screen
);
310 /* scan existing windows */
313 handler
= p_new(event_handler
*, LASTEvent
);
314 handler
[ButtonPress
] = event_handle_buttonpress
;
315 handler
[ConfigureRequest
] = event_handle_configurerequest
;
316 handler
[ConfigureNotify
] = event_handle_configurenotify
;
317 handler
[DestroyNotify
] = event_handle_destroynotify
;
318 handler
[EnterNotify
] = event_handle_enternotify
;
319 handler
[LeaveNotify
] = event_handle_leavenotify
;
320 handler
[MotionNotify
] = event_handle_motionnotify
;
321 handler
[Expose
] = event_handle_expose
;
322 handler
[KeyPress
] = event_handle_keypress
;
323 handler
[MappingNotify
] = event_handle_mappingnotify
;
324 handler
[MapRequest
] = event_handle_maprequest
;
325 handler
[PropertyNotify
] = event_handle_propertynotify
;
326 handler
[UnmapNotify
] = event_handle_unmapnotify
;
327 handler
[ClientMessage
] = event_handle_clientmessage
;
329 /* check for shape extension */
330 if((globalconf
.have_shape
= XShapeQueryExtension(dpy
, &shape_event
, &e_dummy
)))
332 p_realloc(&handler
, shape_event
+ 1);
333 handler
[shape_event
] = event_handle_shape
;
336 /* check for randr extension */
337 if((globalconf
.have_randr
= XRRQueryExtension(dpy
, &randr_event_base
, &e_dummy
)))
339 p_realloc(&handler
, randr_event_base
+ RRScreenChangeNotify
+ 1);
340 handler
[randr_event_base
+ RRScreenChangeNotify
] = event_handle_randr_screen_change_notify
;
346 csfd
= get_client_socket();
347 addr
= get_client_addr(getenv("DISPLAY"));
349 if(bind(csfd
, (const struct sockaddr
*) addr
, SUN_LEN(addr
)))
351 if(errno
== EADDRINUSE
)
353 if(unlink(addr
->sun_path
))
354 warn("error unlinking existing file: %s\n", strerror(errno
));
355 if(bind(csfd
, (const struct sockaddr
*) addr
, SUN_LEN(addr
)))
356 warn("error binding UNIX domain socket: %s\n", strerror(errno
));
359 warn("error binding UNIX domain socket: %s\n", strerror(errno
));
362 /* register function for signals */
363 signal(SIGINT
, &exit_on_signal
);
364 signal(SIGTERM
, &exit_on_signal
);
365 signal(SIGHUP
, &exit_on_signal
);
367 /* refresh everything before waiting events */
371 /* main event loop, also reads status text from socket */
378 if(select(MAX(xfd
, csfd
) + 1, &rd
, NULL
, NULL
, NULL
) == -1)
382 eprint("select failed\n");
384 if(csfd
>= 0 && FD_ISSET(csfd
, &rd
))
385 switch (r
= recv(csfd
, buf
, sizeof(buf
)-1, MSG_TRUNC
))
388 perror("awesome: error reading UNIX domain socket");
394 if(r
>= ssizeof(buf
))
401 /* two level XPending:
402 * we need to first check we have XEvent to handle
403 * and if so, we handle them all in a round.
404 * Then when we have refresh()'ed stuff so maybe new XEvent
405 * are available and select() won't tell us, so let's check
406 * with XPending() again.
412 XNextEvent(dpy
, &ev
);
414 handler
[ev
.type
](&ev
);
429 if(csfd
> 0 && close(csfd
))
430 perror("error closing UNIX domain socket");
431 if(unlink(addr
->sun_path
))
432 perror("error unlinking UNIX domain socket");
435 /* remap all clients since some WM won't handle them otherwise */
436 for(c
= globalconf
.clients
; c
; c
= c
->next
)
439 XSync(globalconf
.display
, False
);
445 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80