summary refs log tree commit diff
path: root/calmwm.c
blob: 58244411d3e118afbe483e0dbc49aa1fd8f47d1e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
/*
 * calmwm - the calm window manager
 *
 * Copyright (c) 2004 Marius Aamodt Eriksen <marius@monkey.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 * $Id$
 */

#include "headers.h"
#include "calmwm.h"

Display				*X_Dpy;

Cursor				 Cursor_move;
Cursor				 Cursor_resize;
Cursor				 Cursor_select;
Cursor				 Cursor_default;
Cursor				 Cursor_question;

struct screen_ctx_q		 Screenq = TAILQ_HEAD_INITIALIZER(Screenq);
struct client_ctx_q		 Clientq = TAILQ_HEAD_INITIALIZER(Clientq);

int				 HasXinerama, HasRandr, Randr_ev;
int				 Starting;
struct conf			 Conf;

static void	sigchld_cb(int);
static void	dpy_init(const char *);
static int	x_errorhandler(Display *, XErrorEvent *);
static void	x_setup(void);
static void	x_setupscreen(struct screen_ctx *, u_int);
static void	x_teardown(void);

int
main(int argc, char **argv)
{
	const char	*conf_file = NULL;
	char		*display_name = NULL;
	int		 ch;

	while ((ch = getopt(argc, argv, "c:d:")) != -1) {
		switch (ch) {
		case 'c':
			conf_file = optarg;
			break;
		case 'd':
			display_name = optarg;
			break;
		default:
			usage();
		}
	}
	argc -= optind;
	argv += optind;

	if (signal(SIGCHLD, sigchld_cb) == SIG_ERR)
		err(1, "signal");

	Starting = 1;
	dpy_init(display_name);

	bzero(&Conf, sizeof(Conf));
	conf_setup(&Conf, conf_file);
	xu_getatoms();
	x_setup();
	Starting = 0;

	xev_loop();

	x_teardown();

	return (0);
}

static void
dpy_init(const char *dpyname)
{
	int	i;

	if ((X_Dpy = XOpenDisplay(dpyname)) == NULL)
		errx(1, "unable to open display \"%s\"",
		    XDisplayName(dpyname));

	XSetErrorHandler(x_errorhandler);

	HasRandr = XRRQueryExtension(X_Dpy, &Randr_ev, &i);
}

static void
x_setup(void)
{
	struct screen_ctx	*sc;
	struct keybinding	*kb;
	int			 i;

	for (i = 0; i < ScreenCount(X_Dpy); i++) {
		sc = xcalloc(1, sizeof(*sc));
		x_setupscreen(sc, i);
		TAILQ_INSERT_TAIL(&Screenq, sc, entry);
	}

	/*
	 * XXX key grabs weren't done before, since Screenq was empty,
	 * do them here for now (this needs changing).
	 */
	TAILQ_FOREACH(kb, &Conf.keybindingq, entry)
		conf_grab(&Conf, kb);

	Cursor_move = XCreateFontCursor(X_Dpy, XC_fleur);
	Cursor_resize = XCreateFontCursor(X_Dpy, XC_bottom_right_corner);
	Cursor_select = XCreateFontCursor(X_Dpy, XC_hand1);
	Cursor_default = XCreateFontCursor(X_Dpy, XC_X_cursor);
	Cursor_question = XCreateFontCursor(X_Dpy, XC_question_arrow);
}

static void
x_teardown(void)
{
	struct screen_ctx	*sc;

	TAILQ_FOREACH(sc, &Screenq, entry)
		XFreeGC(X_Dpy, sc->gc);

	XCloseDisplay(X_Dpy);
}

static void
x_setupscreen(struct screen_ctx *sc, u_int which)
{
	Window			*wins, w0, w1;
	XWindowAttributes	 winattr;
	XSetWindowAttributes	 rootattr;
	int			 fake;
	u_int			 nwins, i;
	sc->which = which;
	sc->rootwin = RootWindow(X_Dpy, sc->which);

	screen_update_geometry(sc, DisplayWidth(X_Dpy, sc->which),
	    DisplayHeight(X_Dpy, sc->which));

	conf_color(&Conf, sc);

	group_init(sc);
	font_init(sc);
	conf_font(&Conf, sc);

	TAILQ_INIT(&sc->mruq);

	/* Initialize menu window. */
	menu_init(sc);

	xu_setwmname(sc);

	/* Deal with existing clients. */
	XQueryTree(X_Dpy, sc->rootwin, &w0, &w1, &wins, &nwins);

	for (i = 0; i < nwins; i++) {
		XGetWindowAttributes(X_Dpy, wins[i], &winattr);
		if (winattr.override_redirect ||
		    winattr.map_state != IsViewable)
			continue;
		client_new(wins[i], sc, winattr.map_state != IsUnmapped);
	}
	XFree(wins);

	screen_updatestackingorder(sc);

	rootattr.event_mask = ChildMask|PropertyChangeMask|EnterWindowMask|
	    LeaveWindowMask|ColormapChangeMask|ButtonMask;

	XChangeWindowAttributes(X_Dpy, sc->rootwin,
	    CWEventMask, &rootattr);

	if (XineramaQueryExtension(X_Dpy, &fake, &fake) == 1 &&
	    ((HasXinerama = XineramaIsActive(X_Dpy)) == 1))
		HasXinerama = 1;
	if (HasRandr)
		XRRSelectInput(X_Dpy, sc->rootwin, RRScreenChangeNotifyMask);
	/*
	 * initial setup of xinerama screens, if we're using RandR then we'll
	 * redo this whenever the screen changes since a CTRC may have been
	 * added or removed
	 */
	screen_init_xinerama(sc);

	XSync(X_Dpy, False);
}

static int
x_errorhandler(Display *dpy, XErrorEvent *e)
{
#ifdef DEBUG
	{
		char msg[80], number[80], req[80];

		XGetErrorText(X_Dpy, e->error_code, msg, sizeof(msg));
		snprintf(number, sizeof(number), "%d", e->request_code);
		XGetErrorDatabaseText(X_Dpy, "XRequest", number,
		    "<unknown>", req, sizeof(req));

		warnx("%s(0x%x): %s", req, (u_int)e->resourceid, msg);
	}
#endif

	if (Starting &&
	    e->error_code == BadAccess &&
	    e->request_code == X_GrabKey)
		errx(1, "root window unavailable - perhaps another "
		    "wm is running?");

	return (0);
}

static void
sigchld_cb(int which)
{
	pid_t	 pid;
	int	 save_errno = errno;
	int	 status;

	/* Collect dead children. */
	while ((pid = waitpid(-1, &status, WNOHANG)) > 0 ||
	    (pid < 0 && errno == EINTR))
		;

	errno = save_errno;
}

__dead void
usage(void)
{
	extern char	*__progname;

	fprintf(stderr, "usage: %s [-c file] [-d display]\n", __progname);
	exit(1);
}