dwm-meillo
view main.c @ 83:ca809fdd30ea
slight change to dwm.1
| author | Anselm R. Garbe <garbeam@wmii.de> |
|---|---|
| date | Mon, 17 Jul 2006 08:37:37 +0200 |
| parents | 0d71fb80b592 |
| children | 052fe7498930 |
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 "dwm.h"
8 #include <errno.h>
9 #include <stdio.h>
10 #include <stdlib.h>
11 #include <string.h>
12 #include <unistd.h>
13 #include <X11/cursorfont.h>
14 #include <X11/Xatom.h>
15 #include <X11/Xproto.h>
17 Display *dpy;
18 Window root, barwin;
19 Atom wmatom[WMLast], netatom[NetLast];
20 Cursor cursor[CurLast];
21 Bool running = True;
22 Bool issel = True;
24 int tsel = Tdev; /* default tag */
25 int screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
26 char stext[1024];
28 DC dc = {0};
29 Client *clients = NULL;
30 Client *sel = NULL;
32 static Bool otherwm;
33 static int (*xerrorxlib)(Display *, XErrorEvent *);
35 /* static functions */
37 static void
38 cleanup()
39 {
40 while(sel) {
41 resize(sel, True);
42 unmanage(sel);
43 }
44 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
45 }
47 static void
48 scan()
49 {
50 unsigned int i, num;
51 Window *wins;
52 XWindowAttributes wa;
53 Window d1, d2;
55 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
56 for(i = 0; i < num; i++) {
57 if(!XGetWindowAttributes(dpy, wins[i], &wa))
58 continue;
59 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
60 continue;
61 if(wa.map_state == IsViewable)
62 manage(wins[i], &wa);
63 }
64 }
65 if(wins)
66 XFree(wins);
67 }
69 static int
70 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
71 {
72 Atom real;
73 int format;
74 unsigned long res, extra;
75 int status;
77 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
78 &res, &extra, prop);
80 if(status != Success || *prop == 0) {
81 return 0;
82 }
83 if(res == 0) {
84 free((void *) *prop);
85 }
86 return res;
87 }
89 /*
90 * Startup Error handler to check if another window manager
91 * is already running.
92 */
93 static int
94 xerrorstart(Display *dsply, XErrorEvent *ee)
95 {
96 otherwm = True;
97 return -1;
98 }
100 /* extern functions */
102 int
103 getproto(Window w)
104 {
105 unsigned char *protocols;
106 long res;
107 int protos = 0;
108 int i;
110 res = win_property(w, wmatom[WMProtocols], XA_ATOM, 20L, &protocols);
111 if(res <= 0) {
112 return protos;
113 }
114 for(i = 0; i < res; i++) {
115 if(protocols[i] == wmatom[WMDelete])
116 protos |= WM_PROTOCOL_DELWIN;
117 }
118 free((char *) protocols);
119 return protos;
120 }
122 void
123 sendevent(Window w, Atom a, long value)
124 {
125 XEvent e;
127 e.type = ClientMessage;
128 e.xclient.window = w;
129 e.xclient.message_type = a;
130 e.xclient.format = 32;
131 e.xclient.data.l[0] = value;
132 e.xclient.data.l[1] = CurrentTime;
133 XSendEvent(dpy, w, False, NoEventMask, &e);
134 XSync(dpy, False);
135 }
137 void
138 quit(Arg *arg)
139 {
140 running = False;
141 }
143 /*
144 * There's no way to check accesses to destroyed windows, thus
145 * those cases are ignored (especially on UnmapNotify's).
146 * Other types of errors call Xlib's default error handler, which
147 * calls exit().
148 */
149 int
150 xerror(Display *dpy, XErrorEvent *ee)
151 {
152 if(ee->error_code == BadWindow
153 || (ee->request_code == X_SetInputFocus
154 && ee->error_code == BadMatch)
155 || (ee->request_code == X_PolyText8
156 && ee->error_code == BadDrawable)
157 || (ee->request_code == X_PolyFillRectangle
158 && ee->error_code == BadDrawable)
159 || (ee->request_code == X_PolySegment
160 && ee->error_code == BadDrawable)
161 || (ee->request_code == X_ConfigureWindow
162 && ee->error_code == BadMatch)
163 || (ee->request_code == X_GrabKey
164 && ee->error_code == BadAccess))
165 return 0;
166 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
167 ee->request_code, ee->error_code);
168 return xerrorxlib(dpy, ee); /* may call exit() */
169 }
171 int
172 main(int argc, char *argv[])
173 {
174 int i, n;
175 fd_set rd;
176 XSetWindowAttributes wa;
177 unsigned int mask;
178 Bool readstdin = True;
179 Window w;
180 XEvent ev;
182 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
183 switch (argv[i][1]) {
184 case 'v':
185 fprintf(stdout, "%s",
186 "dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n");
187 exit(0);
188 break;
189 default:
190 eprint("usage: dwm [-v]\n");
191 break;
192 }
193 }
195 dpy = XOpenDisplay(0);
196 if(!dpy)
197 eprint("dwm: cannot connect X server\n");
199 screen = DefaultScreen(dpy);
200 root = RootWindow(dpy, screen);
202 /* check if another WM is already running */
203 otherwm = False;
204 XSetErrorHandler(xerrorstart);
205 /* this causes an error if some other WM is running */
206 XSelectInput(dpy, root, SubstructureRedirectMask);
207 XSync(dpy, False);
209 if(otherwm)
210 eprint("dwm: another window manager is already running\n");
212 XSetErrorHandler(NULL);
213 xerrorxlib = XSetErrorHandler(xerror);
215 /* init atoms */
216 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
217 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
218 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
219 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
220 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
221 PropModeReplace, (unsigned char *) netatom, NetLast);
223 /* init cursors */
224 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
225 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
226 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
228 grabkeys();
230 /* style */
231 dc.bg = getcolor(BGCOLOR);
232 dc.fg = getcolor(FGCOLOR);
233 dc.border = getcolor(BORDERCOLOR);
234 setfont(FONT);
236 sx = sy = 0;
237 sw = DisplayWidth(dpy, screen);
238 sh = DisplayHeight(dpy, screen);
239 mw = (sw * MASTERW) / 100;
241 wa.override_redirect = 1;
242 wa.background_pixmap = ParentRelative;
243 wa.event_mask = ButtonPressMask | ExposureMask;
245 bx = by = 0;
246 bw = sw;
247 dc.h = bh = dc.font.height + 4;
248 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
249 CopyFromParent, DefaultVisual(dpy, screen),
250 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
251 XDefineCursor(dpy, barwin, cursor[CurNormal]);
252 XMapRaised(dpy, barwin);
254 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
255 dc.gc = XCreateGC(dpy, root, 0, 0);
256 drawstatus();
258 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
260 wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
261 | LeaveWindowMask;
262 wa.cursor = cursor[CurNormal];
264 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
266 strcpy(stext, "dwm-"VERSION);
267 scan();
269 /* main event loop, reads status text from stdin as well */
270 Mainloop:
271 while(running) {
272 FD_ZERO(&rd);
273 if(readstdin)
274 FD_SET(STDIN_FILENO, &rd);
275 FD_SET(ConnectionNumber(dpy), &rd);
277 i = select(ConnectionNumber(dpy) + 1, &rd, 0, 0, 0);
278 if(i == -1 && errno == EINTR)
279 continue;
280 if(i < 0)
281 eprint("select failed\n");
282 else if(i > 0) {
283 if(FD_ISSET(ConnectionNumber(dpy), &rd)) {
284 while(XPending(dpy)) {
285 XNextEvent(dpy, &ev);
286 if(handler[ev.type])
287 (handler[ev.type])(&ev); /* call handler */
288 }
289 }
290 if(readstdin && FD_ISSET(STDIN_FILENO, &rd)) {
291 i = n = 0;
292 for(;;) {
293 if((i = getchar()) == EOF) {
294 /* broken pipe/end of producer */
295 readstdin = False;
296 strcpy(stext, "broken pipe");
297 goto Mainloop;
298 }
299 if(i == '\n' || n >= sizeof(stext) - 1)
300 break;
301 stext[n++] = i;
302 }
303 stext[n] = 0;
304 drawstatus();
305 }
306 }
307 }
309 cleanup();
310 XCloseDisplay(dpy);
312 return 0;
313 }