aewl
view wm.c @ 23:95ffdfd0a819
some more additions/fixes
| author | Anselm R. Garbe <garbeam@wmii.de> |
|---|---|
| date | Wed, 12 Jul 2006 00:00:25 +0200 |
| parents | 359b6e563b95 |
| children | e8f627998d6f |
line source
1 /*
2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
3 * See LICENSE file for license details.
4 */
6 #include <errno.h>
8 #include <stdarg.h>
9 #include <stdio.h>
10 #include <stdlib.h>
12 #include <sys/types.h>
13 #include <sys/time.h>
15 #include <X11/cursorfont.h>
16 #include <X11/Xatom.h>
17 #include <X11/Xproto.h>
19 #include "wm.h"
21 /* X structs */
22 Display *dpy;
23 Window root, barwin;
24 Atom wm_atom[WMLast], net_atom[NetLast];
25 Cursor cursor[CurLast];
26 XRectangle rect, barrect;
27 Bool running = True;
28 Bool sel_screen;
30 char statustext[1024], tag[256];
31 int screen;
33 Brush brush = {0};
34 Client *clients = NULL;
35 Client *stack = NULL;
37 static Bool other_wm_running;
38 static const char version[] = "gridwm - " VERSION ", (C)opyright MMVI Anselm R. Garbe\n";
39 static int (*x_error_handler) (Display *, XErrorEvent *);
41 static const char *status[] = {
42 "sh", "-c", "echo -n `date '+%Y/%m/%d %H:%M'`"
43 " `uptime | sed 's/.*://; s/,//g'`"
44 " `acpi | awk '{print $4}' | sed 's/,//'`", 0
45 };
47 static void
48 usage()
49 {
50 fputs("usage: gridwm [-v]\n", stderr);
51 exit(1);
52 }
54 static void
55 scan_wins()
56 {
57 unsigned int i, num;
58 Window *wins;
59 XWindowAttributes wa;
60 Window d1, d2;
62 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
63 for(i = 0; i < num; i++) {
64 if(!XGetWindowAttributes(dpy, wins[i], &wa))
65 continue;
66 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
67 continue;
68 if(wa.map_state == IsViewable)
69 manage(wins[i], &wa);
70 }
71 }
72 if(wins)
73 XFree(wins);
74 }
76 static int
77 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
78 {
79 Atom real;
80 int format;
81 unsigned long res, extra;
82 int status;
84 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
85 &res, &extra, prop);
87 if(status != Success || *prop == 0) {
88 return 0;
89 }
90 if(res == 0) {
91 free((void *) *prop);
92 }
93 return res;
94 }
96 int
97 win_proto(Window w)
98 {
99 Atom *protocols;
100 long res;
101 int protos = 0;
102 int i;
104 res = win_property(w, wm_atom[WMProtocols], XA_ATOM, 20L,
105 ((unsigned char **) &protocols));
106 if(res <= 0) {
107 return protos;
108 }
109 for(i = 0; i < res; i++) {
110 if(protocols[i] == wm_atom[WMDelete])
111 protos |= WM_PROTOCOL_DELWIN;
112 }
113 free((char *) protocols);
114 return protos;
115 }
117 void
118 send_message(Window w, Atom a, long value)
119 {
120 XEvent e;
122 e.type = ClientMessage;
123 e.xclient.window = w;
124 e.xclient.message_type = a;
125 e.xclient.format = 32;
126 e.xclient.data.l[0] = value;
127 e.xclient.data.l[1] = CurrentTime;
128 XSendEvent(dpy, w, False, NoEventMask, &e);
129 XFlush(dpy);
130 }
132 /*
133 * There's no way to check accesses to destroyed windows, thus
134 * those cases are ignored (especially on UnmapNotify's).
135 * Other types of errors call Xlib's default error handler, which
136 * calls exit().
137 */
138 int
139 error_handler(Display *dpy, XErrorEvent *error)
140 {
141 if(error->error_code == BadWindow
142 || (error->request_code == X_SetInputFocus
143 && error->error_code == BadMatch)
144 || (error->request_code == X_PolyText8
145 && error->error_code == BadDrawable)
146 || (error->request_code == X_PolyFillRectangle
147 && error->error_code == BadDrawable)
148 || (error->request_code == X_PolySegment
149 && error->error_code == BadDrawable)
150 || (error->request_code == X_ConfigureWindow
151 && error->error_code == BadMatch)
152 || (error->request_code == X_GrabKey
153 && error->error_code == BadAccess))
154 return 0;
155 fprintf(stderr, "gridwm: fatal error: request code=%d, error code=%d\n",
156 error->request_code, error->error_code);
157 return x_error_handler(dpy, error); /* may call exit() */
158 }
160 /*
161 * Startup Error handler to check if another window manager
162 * is already running.
163 */
164 static int
165 startup_error_handler(Display *dpy, XErrorEvent *error)
166 {
167 other_wm_running = True;
168 return -1;
169 }
171 static void
172 cleanup()
173 {
174 while(clients)
175 unmanage(clients);
176 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
177 }
179 int
180 main(int argc, char *argv[])
181 {
182 int i;
183 XSetWindowAttributes wa;
184 unsigned int mask;
185 Window w;
186 XEvent ev;
187 fd_set fds;
188 struct timeval t, timeout = {
189 .tv_usec = 0,
190 .tv_sec = STATUSDELAY,
191 };
193 /* command line args */
194 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
195 switch (argv[i][1]) {
196 case 'v':
197 fprintf(stdout, "%s", version);
198 exit(0);
199 break;
200 default:
201 usage();
202 break;
203 }
204 }
206 dpy = XOpenDisplay(0);
207 if(!dpy)
208 error("gridwm: cannot connect X server\n");
210 screen = DefaultScreen(dpy);
211 root = RootWindow(dpy, screen);
213 /* check if another WM is already running */
214 other_wm_running = False;
215 XSetErrorHandler(startup_error_handler);
216 /* this causes an error if some other WM is running */
217 XSelectInput(dpy, root, SubstructureRedirectMask);
218 XFlush(dpy);
220 if(other_wm_running)
221 error("gridwm: another window manager is already running\n");
223 rect.x = rect.y = 0;
224 rect.width = DisplayWidth(dpy, screen);
225 rect.height = DisplayHeight(dpy, screen);
226 sel_screen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
228 XSetErrorHandler(0);
229 x_error_handler = XSetErrorHandler(error_handler);
231 /* init atoms */
232 wm_atom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
233 wm_atom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
234 net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
235 net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
237 XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32,
238 PropModeReplace, (unsigned char *) net_atom, NetLast);
241 /* init cursors */
242 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
243 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
244 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
246 update_keys();
248 /* style */
249 loadcolors(dpy, screen, &brush, BGCOLOR, FGCOLOR, BORDERCOLOR);
250 loadfont(dpy, &brush.font, FONT);
252 wa.override_redirect = 1;
253 wa.background_pixmap = ParentRelative;
254 wa.event_mask = ExposureMask;
256 barrect = rect;
257 barrect.height = labelheight(&brush.font);
258 barrect.y = rect.height - barrect.height;
259 barwin = XCreateWindow(dpy, root, barrect.x, barrect.y,
260 barrect.width, barrect.height, 0, DefaultDepth(dpy, screen),
261 CopyFromParent, DefaultVisual(dpy, screen),
262 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
263 XDefineCursor(dpy, barwin, cursor[CurNormal]);
264 XMapRaised(dpy, barwin);
266 brush.drawable = XCreatePixmap(dpy, root, rect.width, barrect.height,
267 DefaultDepth(dpy, screen));
268 brush.gc = XCreateGC(dpy, root, 0, 0);
270 pipe_spawn(statustext, sizeof(statustext), dpy, (char **)status);
271 draw_bar();
273 wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
274 | LeaveWindowMask;
275 wa.cursor = cursor[CurNormal];
276 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
278 scan_wins();
280 while(running) {
281 if(XPending(dpy) > 0) {
282 XNextEvent(dpy, &ev);
283 if(handler[ev.type])
284 (handler[ev.type]) (&ev); /* call handler */
285 continue;
286 }
287 FD_ZERO(&fds);
288 FD_SET(ConnectionNumber(dpy), &fds);
289 t = timeout;
290 if(select(ConnectionNumber(dpy) + 1, &fds, NULL, NULL, &t) > 0)
291 continue;
292 else if(errno != EINTR) {
293 pipe_spawn(statustext, sizeof(statustext), dpy, (char **)status);
294 draw_bar();
295 }
296 }
298 cleanup();
299 XCloseDisplay(dpy);
301 return 0;
302 }