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view main.c @ 84:052fe7498930
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| author | Anselm R. Garbe <garbeam@wmii.de> |
|---|---|
| date | Mon, 17 Jul 2006 09:12:29 +0200 |
| parents | aabebd6e61f3 |
| children | 4bee0aa5b286 |
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>
18 /* static */
20 static Bool otherwm;
21 static int (*xerrorxlib)(Display *, XErrorEvent *);
23 static void
24 cleanup()
25 {
26 while(sel) {
27 resize(sel, True);
28 unmanage(sel);
29 }
30 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
31 }
33 static void
34 scan()
35 {
36 unsigned int i, num;
37 Window *wins;
38 XWindowAttributes wa;
39 Window d1, d2;
41 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
42 for(i = 0; i < num; i++) {
43 if(!XGetWindowAttributes(dpy, wins[i], &wa))
44 continue;
45 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
46 continue;
47 if(wa.map_state == IsViewable)
48 manage(wins[i], &wa);
49 }
50 }
51 if(wins)
52 XFree(wins);
53 }
55 static int
56 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
57 {
58 Atom real;
59 int format;
60 unsigned long res, extra;
61 int status;
63 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
64 &res, &extra, prop);
66 if(status != Success || *prop == 0) {
67 return 0;
68 }
69 if(res == 0) {
70 free((void *) *prop);
71 }
72 return res;
73 }
75 /*
76 * Startup Error handler to check if another window manager
77 * is already running.
78 */
79 static int
80 xerrorstart(Display *dsply, XErrorEvent *ee)
81 {
82 otherwm = True;
83 return -1;
84 }
86 /* extern */
88 char stext[1024];
89 int tsel = Tdev; /* default tag */
90 int screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
91 Atom wmatom[WMLast], netatom[NetLast];
92 Bool running = True;
93 Bool issel = True;
94 Client *clients = NULL;
95 Client *sel = NULL;
96 Cursor cursor[CurLast];
97 Display *dpy;
98 DC dc = {0};
99 Window root, barwin;
101 int
102 getproto(Window w)
103 {
104 unsigned char *protocols;
105 long res;
106 int protos = 0;
107 int i;
109 res = win_property(w, wmatom[WMProtocols], XA_ATOM, 20L, &protocols);
110 if(res <= 0) {
111 return protos;
112 }
113 for(i = 0; i < res; i++) {
114 if(protocols[i] == wmatom[WMDelete])
115 protos |= WM_PROTOCOL_DELWIN;
116 }
117 free((char *) protocols);
118 return protos;
119 }
121 void
122 sendevent(Window w, Atom a, long value)
123 {
124 XEvent e;
126 e.type = ClientMessage;
127 e.xclient.window = w;
128 e.xclient.message_type = a;
129 e.xclient.format = 32;
130 e.xclient.data.l[0] = value;
131 e.xclient.data.l[1] = CurrentTime;
132 XSendEvent(dpy, w, False, NoEventMask, &e);
133 XSync(dpy, False);
134 }
136 void
137 quit(Arg *arg)
138 {
139 running = False;
140 }
142 /*
143 * There's no way to check accesses to destroyed windows, thus those cases are
144 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
145 * default error handler, which calls exit().
146 */
147 int
148 xerror(Display *dpy, XErrorEvent *ee)
149 {
150 if(ee->error_code == BadWindow
151 || (ee->request_code == X_SetInputFocus
152 && ee->error_code == BadMatch)
153 || (ee->request_code == X_PolyText8
154 && ee->error_code == BadDrawable)
155 || (ee->request_code == X_PolyFillRectangle
156 && ee->error_code == BadDrawable)
157 || (ee->request_code == X_PolySegment
158 && ee->error_code == BadDrawable)
159 || (ee->request_code == X_ConfigureWindow
160 && ee->error_code == BadMatch)
161 || (ee->request_code == X_GrabKey
162 && ee->error_code == BadAccess))
163 return 0;
164 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
165 ee->request_code, ee->error_code);
166 return xerrorxlib(dpy, ee); /* may call exit() */
167 }
169 int
170 main(int argc, char *argv[])
171 {
172 int i, n;
173 fd_set rd;
174 XSetWindowAttributes wa;
175 unsigned int mask;
176 Bool readstdin = True;
177 Window w;
178 XEvent ev;
180 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
181 switch (argv[i][1]) {
182 case 'v':
183 fprintf(stdout, "%s",
184 "dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n");
185 exit(0);
186 break;
187 default:
188 eprint("usage: dwm [-v]\n");
189 break;
190 }
191 }
193 dpy = XOpenDisplay(0);
194 if(!dpy)
195 eprint("dwm: cannot connect X server\n");
197 screen = DefaultScreen(dpy);
198 root = RootWindow(dpy, screen);
200 /* check if another WM is already running */
201 otherwm = False;
202 XSetErrorHandler(xerrorstart);
203 /* this causes an error if some other WM is running */
204 XSelectInput(dpy, root, SubstructureRedirectMask);
205 XSync(dpy, False);
207 if(otherwm)
208 eprint("dwm: another window manager is already running\n");
210 XSetErrorHandler(NULL);
211 xerrorxlib = XSetErrorHandler(xerror);
213 /* init atoms */
214 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
215 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
216 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
217 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
218 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
219 PropModeReplace, (unsigned char *) netatom, NetLast);
221 /* init cursors */
222 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
223 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
224 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
226 grabkeys();
228 /* style */
229 dc.bg = getcolor(BGCOLOR);
230 dc.fg = getcolor(FGCOLOR);
231 dc.border = getcolor(BORDERCOLOR);
232 setfont(FONT);
234 sx = sy = 0;
235 sw = DisplayWidth(dpy, screen);
236 sh = DisplayHeight(dpy, screen);
237 mw = (sw * MASTERW) / 100;
239 wa.override_redirect = 1;
240 wa.background_pixmap = ParentRelative;
241 wa.event_mask = ButtonPressMask | ExposureMask;
243 bx = by = 0;
244 bw = sw;
245 dc.h = bh = dc.font.height + 4;
246 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
247 CopyFromParent, DefaultVisual(dpy, screen),
248 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
249 XDefineCursor(dpy, barwin, cursor[CurNormal]);
250 XMapRaised(dpy, barwin);
252 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
253 dc.gc = XCreateGC(dpy, root, 0, 0);
254 drawstatus();
256 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
258 wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
259 | LeaveWindowMask;
260 wa.cursor = cursor[CurNormal];
262 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
264 strcpy(stext, "dwm-"VERSION);
265 scan();
267 /* main event loop, reads status text from stdin as well */
268 Mainloop:
269 while(running) {
270 FD_ZERO(&rd);
271 if(readstdin)
272 FD_SET(STDIN_FILENO, &rd);
273 FD_SET(ConnectionNumber(dpy), &rd);
275 i = select(ConnectionNumber(dpy) + 1, &rd, 0, 0, 0);
276 if(i == -1 && errno == EINTR)
277 continue;
278 if(i < 0)
279 eprint("select failed\n");
280 else if(i > 0) {
281 if(FD_ISSET(ConnectionNumber(dpy), &rd)) {
282 while(XPending(dpy)) {
283 XNextEvent(dpy, &ev);
284 if(handler[ev.type])
285 (handler[ev.type])(&ev); /* call handler */
286 }
287 }
288 if(readstdin && FD_ISSET(STDIN_FILENO, &rd)) {
289 i = n = 0;
290 for(;;) {
291 if((i = getchar()) == EOF) {
292 /* broken pipe/end of producer */
293 readstdin = False;
294 strcpy(stext, "broken pipe");
295 goto Mainloop;
296 }
297 if(i == '\n' || n >= sizeof(stext) - 1)
298 break;
299 stext[n++] = i;
300 }
301 stext[n] = 0;
302 drawstatus();
303 }
304 }
305 }
307 cleanup();
308 XCloseDisplay(dpy);
310 return 0;
311 }