dwm-meillo
view wm.c @ 26:e8f627998d6f
simplified several portions of code through replacing rect structs with x,y,h,w counterparts (much more readable)
| author | Anselm R. Garbe <garbeam@wmii.de> |
|---|---|
| date | Wed, 12 Jul 2006 15:17:22 +0200 |
| parents | 3ef108a5ca0a |
| children | f96fb3fd8203 |
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 Bool running = True;
27 Bool sel_screen;
29 char statustext[1024], tag[256];
30 int screen, sx, sy, sw, sh, bx, by, bw, bh;
32 Brush brush = {0};
33 Client *clients = NULL;
34 Client *stack = NULL;
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 *);
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 };
46 static void
47 usage()
48 {
49 fputs("usage: gridwm [-v]\n", stderr);
50 exit(1);
51 }
53 static void
54 scan_wins()
55 {
56 unsigned int i, num;
57 Window *wins;
58 XWindowAttributes wa;
59 Window d1, d2;
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 }
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;
83 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
84 &res, &extra, prop);
86 if(status != Success || *prop == 0) {
87 return 0;
88 }
89 if(res == 0) {
90 free((void *) *prop);
91 }
92 return res;
93 }
95 int
96 win_proto(Window w)
97 {
98 Atom *protocols;
99 long res;
100 int protos = 0;
101 int i;
103 res = win_property(w, wm_atom[WMProtocols], XA_ATOM, 20L,
104 ((unsigned char **) &protocols));
105 if(res <= 0) {
106 return protos;
107 }
108 for(i = 0; i < res; i++) {
109 if(protocols[i] == wm_atom[WMDelete])
110 protos |= WM_PROTOCOL_DELWIN;
111 }
112 free((char *) protocols);
113 return protos;
114 }
116 void
117 send_message(Window w, Atom a, long value)
118 {
119 XEvent e;
121 e.type = ClientMessage;
122 e.xclient.window = w;
123 e.xclient.message_type = a;
124 e.xclient.format = 32;
125 e.xclient.data.l[0] = value;
126 e.xclient.data.l[1] = CurrentTime;
127 XSendEvent(dpy, w, False, NoEventMask, &e);
128 XFlush(dpy);
129 }
131 /*
132 * There's no way to check accesses to destroyed windows, thus
133 * those cases are ignored (especially on UnmapNotify's).
134 * Other types of errors call Xlib's default error handler, which
135 * calls exit().
136 */
137 int
138 error_handler(Display *dpy, XErrorEvent *error)
139 {
140 if(error->error_code == BadWindow
141 || (error->request_code == X_SetInputFocus
142 && error->error_code == BadMatch)
143 || (error->request_code == X_PolyText8
144 && error->error_code == BadDrawable)
145 || (error->request_code == X_PolyFillRectangle
146 && error->error_code == BadDrawable)
147 || (error->request_code == X_PolySegment
148 && error->error_code == BadDrawable)
149 || (error->request_code == X_ConfigureWindow
150 && error->error_code == BadMatch)
151 || (error->request_code == X_GrabKey
152 && error->error_code == BadAccess))
153 return 0;
154 fprintf(stderr, "gridwm: fatal error: request code=%d, error code=%d\n",
155 error->request_code, error->error_code);
156 return x_error_handler(dpy, error); /* may call exit() */
157 }
159 /*
160 * Startup Error handler to check if another window manager
161 * is already running.
162 */
163 static int
164 startup_error_handler(Display *dpy, XErrorEvent *error)
165 {
166 other_wm_running = True;
167 return -1;
168 }
170 static void
171 cleanup()
172 {
173 while(clients)
174 unmanage(clients);
175 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
176 }
178 int
179 main(int argc, char *argv[])
180 {
181 int i;
182 XSetWindowAttributes wa;
183 unsigned int mask;
184 Window w;
185 XEvent ev;
186 fd_set fds;
187 struct timeval t, timeout = {
188 .tv_usec = 0,
189 .tv_sec = STATUSDELAY,
190 };
192 /* command line args */
193 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
194 switch (argv[i][1]) {
195 case 'v':
196 fprintf(stdout, "%s", version);
197 exit(0);
198 break;
199 default:
200 usage();
201 break;
202 }
203 }
205 dpy = XOpenDisplay(0);
206 if(!dpy)
207 error("gridwm: cannot connect X server\n");
209 screen = DefaultScreen(dpy);
210 root = RootWindow(dpy, screen);
212 /* check if another WM is already running */
213 other_wm_running = False;
214 XSetErrorHandler(startup_error_handler);
215 /* this causes an error if some other WM is running */
216 XSelectInput(dpy, root, SubstructureRedirectMask);
217 XFlush(dpy);
219 if(other_wm_running)
220 error("gridwm: another window manager is already running\n");
222 sx = sy = 0;
223 sw = DisplayWidth(dpy, screen);
224 sh = DisplayHeight(dpy, screen);
225 sel_screen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
227 XSetErrorHandler(0);
228 x_error_handler = XSetErrorHandler(error_handler);
230 /* init atoms */
231 wm_atom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
232 wm_atom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
233 net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
234 net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
236 XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32,
237 PropModeReplace, (unsigned char *) net_atom, NetLast);
240 /* init cursors */
241 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
242 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
243 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
245 update_keys();
247 /* style */
248 loadcolors(dpy, screen, &brush, BGCOLOR, FGCOLOR, BORDERCOLOR);
249 loadfont(dpy, &brush.font, FONT);
251 wa.override_redirect = 1;
252 wa.background_pixmap = ParentRelative;
253 wa.event_mask = ExposureMask;
255 bx = by = 0;
256 bw = sw;
257 bh = texth(&brush.font);
258 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
259 CopyFromParent, DefaultVisual(dpy, screen),
260 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
261 XDefineCursor(dpy, barwin, cursor[CurNormal]);
262 XMapRaised(dpy, barwin);
264 brush.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
265 brush.gc = XCreateGC(dpy, root, 0, 0);
267 pipe_spawn(statustext, sizeof(statustext), dpy, (char **)status);
268 draw_bar();
270 wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
271 | LeaveWindowMask;
272 wa.cursor = cursor[CurNormal];
273 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
275 scan_wins();
277 while(running) {
278 if(XPending(dpy) > 0) {
279 XNextEvent(dpy, &ev);
280 if(handler[ev.type])
281 (handler[ev.type]) (&ev); /* call handler */
282 continue;
283 }
284 FD_ZERO(&fds);
285 FD_SET(ConnectionNumber(dpy), &fds);
286 t = timeout;
287 if(select(ConnectionNumber(dpy) + 1, &fds, NULL, NULL, &t) > 0)
288 continue;
289 else if(errno != EINTR) {
290 pipe_spawn(statustext, sizeof(statustext), dpy, (char **)status);
291 draw_bar();
292 }
293 }
295 cleanup();
296 XCloseDisplay(dpy);
298 return 0;
299 }