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view wm.c @ 30:2e0fb4130bfb

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new stuff, fixed several issues
author Anselm R. Garbe <garbeam@wmii.de>
date Wed, 12 Jul 2006 17:50:31 +0200
parents f96fb3fd8203
children 386649deb651
line source
1 /*
2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
3 * See LICENSE file for license details.
4 */
5
6 #include <errno.h>
7
8 #include <stdarg.h>
9 #include <stdio.h>
10 #include <stdlib.h>
11
12 #include <sys/types.h>
13 #include <sys/time.h>
14
15 #include <X11/cursorfont.h>
16 #include <X11/Xatom.h>
17 #include <X11/Xproto.h>
18
19 #include "wm.h"
20
21 /* X structs */
22 Display *dpy;
23 Window root, barwin;
24 Atom wm_atom[WMLast], net_atom[NetLast];
25 Cursor cursor[CurLast];
26 Bool running = True;
27 Bool sel_screen;
28
29 char statustext[1024], tag[256];
30 int screen, sx, sy, sw, sh, bx, by, bw, bh;
31
32 Brush brush = {0};
33 Client *clients = NULL;
34 Client *stack = NULL;
35
36 static Bool other_wm_running;
37 static const char version[] = "gridwm - " VERSION ", (C)opyright MMVI Anselm R. Garbe\n";
38 static int (*x_error_handler) (Display *, XErrorEvent *);
39
40 static const char *status[] = {
41 "sh", "-c", "echo -n `date '+%Y-%m-%d %H:%M'`"
42 " `uptime | sed 's/.*://; s/,//g'`"
43 " `acpi | awk '{print $4}' | sed 's/,//'`", 0
44 };
45
46 static void
47 usage()
48 {
49 fputs("usage: gridwm [-v]\n", stderr);
50 exit(1);
51 }
52
53 static void
54 scan_wins()
55 {
56 unsigned int i, num;
57 Window *wins;
58 XWindowAttributes wa;
59 Window d1, d2;
60
61 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
62 for(i = 0; i < num; i++) {
63 if(!XGetWindowAttributes(dpy, wins[i], &wa))
64 continue;
65 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
66 continue;
67 if(wa.map_state == IsViewable)
68 manage(wins[i], &wa);
69 }
70 }
71 if(wins)
72 XFree(wins);
73 }
74
75 static int
76 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
77 {
78 Atom real;
79 int format;
80 unsigned long res, extra;
81 int status;
82
83 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
84 &res, &extra, prop);
85
86 if(status != Success || *prop == 0) {
87 return 0;
88 }
89 if(res == 0) {
90 free((void *) *prop);
91 }
92 return res;
93 }
94
95 int
96 win_proto(Window w)
97 {
98 unsigned char *protocols;
99 long res;
100 int protos = 0;
101 int i;
102
103 res = win_property(w, wm_atom[WMProtocols], XA_ATOM, 20L, &protocols);
104 if(res <= 0) {
105 return protos;
106 }
107 for(i = 0; i < res; i++) {
108 if(protocols[i] == wm_atom[WMDelete])
109 protos |= WM_PROTOCOL_DELWIN;
110 }
111 free((char *) protocols);
112 return protos;
113 }
114
115 void
116 send_message(Window w, Atom a, long value)
117 {
118 XEvent e;
119
120 e.type = ClientMessage;
121 e.xclient.window = w;
122 e.xclient.message_type = a;
123 e.xclient.format = 32;
124 e.xclient.data.l[0] = value;
125 e.xclient.data.l[1] = CurrentTime;
126 XSendEvent(dpy, w, False, NoEventMask, &e);
127 XFlush(dpy);
128 }
129
130 /*
131 * There's no way to check accesses to destroyed windows, thus
132 * those cases are ignored (especially on UnmapNotify's).
133 * Other types of errors call Xlib's default error handler, which
134 * calls exit().
135 */
136 int
137 error_handler(Display *dpy, XErrorEvent *error)
138 {
139 if(error->error_code == BadWindow
140 || (error->request_code == X_SetInputFocus
141 && error->error_code == BadMatch)
142 || (error->request_code == X_PolyText8
143 && error->error_code == BadDrawable)
144 || (error->request_code == X_PolyFillRectangle
145 && error->error_code == BadDrawable)
146 || (error->request_code == X_PolySegment
147 && error->error_code == BadDrawable)
148 || (error->request_code == X_ConfigureWindow
149 && error->error_code == BadMatch)
150 || (error->request_code == X_GrabKey
151 && error->error_code == BadAccess))
152 return 0;
153 fprintf(stderr, "gridwm: fatal error: request code=%d, error code=%d\n",
154 error->request_code, error->error_code);
155 return x_error_handler(dpy, error); /* may call exit() */
156 }
157
158 /*
159 * Startup Error handler to check if another window manager
160 * is already running.
161 */
162 static int
163 startup_error_handler(Display *dpy, XErrorEvent *error)
164 {
165 other_wm_running = True;
166 return -1;
167 }
168
169 static void
170 cleanup()
171 {
172 while(clients)
173 unmanage(clients);
174 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
175 }
176
177 void
178 run(void *aux)
179 {
180 spawn(dpy, aux);
181 }
182
183 void
184 quit(void *aux)
185 {
186 running = False;
187 }
188
189 int
190 main(int argc, char *argv[])
191 {
192 int i;
193 XSetWindowAttributes wa;
194 unsigned int mask;
195 Window w;
196 XEvent ev;
197 fd_set fds;
198 struct timeval t, timeout = {
199 .tv_usec = 0,
200 .tv_sec = STATUSDELAY,
201 };
202
203 /* command line args */
204 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
205 switch (argv[i][1]) {
206 case 'v':
207 fprintf(stdout, "%s", version);
208 exit(0);
209 break;
210 default:
211 usage();
212 break;
213 }
214 }
215
216 dpy = XOpenDisplay(0);
217 if(!dpy)
218 error("gridwm: cannot connect X server\n");
219
220 screen = DefaultScreen(dpy);
221 root = RootWindow(dpy, screen);
222
223 /* check if another WM is already running */
224 other_wm_running = False;
225 XSetErrorHandler(startup_error_handler);
226 /* this causes an error if some other WM is running */
227 XSelectInput(dpy, root, SubstructureRedirectMask);
228 XFlush(dpy);
229
230 if(other_wm_running)
231 error("gridwm: another window manager is already running\n");
232
233 sx = sy = 0;
234 sw = DisplayWidth(dpy, screen);
235 sh = DisplayHeight(dpy, screen);
236 sel_screen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
237
238 XSetErrorHandler(0);
239 x_error_handler = XSetErrorHandler(error_handler);
240
241 /* init atoms */
242 wm_atom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
243 wm_atom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
244 net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
245 net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
246
247 XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32,
248 PropModeReplace, (unsigned char *) net_atom, NetLast);
249
250
251 /* init cursors */
252 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
253 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
254 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
255
256 update_keys();
257
258 /* style */
259 loadcolors(dpy, screen, &brush, BGCOLOR, FGCOLOR, BORDERCOLOR);
260 loadfont(dpy, &brush.font, FONT);
261
262 wa.override_redirect = 1;
263 wa.background_pixmap = ParentRelative;
264 wa.event_mask = ExposureMask;
265
266 bx = by = 0;
267 bw = sw;
268 bh = texth(&brush.font);
269 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
270 CopyFromParent, DefaultVisual(dpy, screen),
271 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
272 XDefineCursor(dpy, barwin, cursor[CurNormal]);
273 XMapRaised(dpy, barwin);
274
275 brush.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
276 brush.gc = XCreateGC(dpy, root, 0, 0);
277
278 pipe_spawn(statustext, sizeof(statustext), dpy, (char **)status);
279 draw_bar();
280
281 wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
282 | LeaveWindowMask;
283 wa.cursor = cursor[CurNormal];
284 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
285
286 scan_wins();
287
288 while(running) {
289 if(XPending(dpy) > 0) {
290 XNextEvent(dpy, &ev);
291 if(handler[ev.type])
292 (handler[ev.type]) (&ev); /* call handler */
293 continue;
294 }
295 FD_ZERO(&fds);
296 FD_SET(ConnectionNumber(dpy), &fds);
297 t = timeout;
298 if(select(ConnectionNumber(dpy) + 1, &fds, NULL, NULL, &t) > 0)
299 continue;
300 else if(errno != EINTR) {
301 pipe_spawn(statustext, sizeof(statustext), dpy, (char **)status);
302 draw_bar();
303 }
304 }
305
306 cleanup();
307 XCloseDisplay(dpy);
308
309 return 0;
310 }