dwm-meillo
view main.c @ 295:7565875d07d3
extended cleanup
| author | Anselm R.Garbe <arg@10ksloc.org> |
|---|---|
| date | Tue, 15 Aug 2006 09:37:12 +0200 |
| parents | 093744cc5353 |
| children | 3b11e32e8d7e |
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"
7 #include <errno.h>
8 #include <stdio.h>
9 #include <stdlib.h>
10 #include <string.h>
11 #include <unistd.h>
12 #include <sys/select.h>
13 #include <X11/cursorfont.h>
14 #include <X11/keysym.h>
15 #include <X11/Xatom.h>
16 #include <X11/Xproto.h>
18 /* static */
20 static int (*xerrorxlib)(Display *, XErrorEvent *);
21 static Bool otherwm;
23 static void
24 cleanup()
25 {
26 while(sel) {
27 resize(sel, True, TopLeft);
28 unmanage(sel);
29 }
30 if(dc.font.set)
31 XFreeFontSet(dpy, dc.font.set);
32 else
33 XFreeFont(dpy, dc.font.xfont);
34 XUngrabKey(dpy, AnyKey, AnyModifier, root);
35 XDestroyWindow(dpy, barwin);
36 XFreePixmap(dpy, dc.drawable);
37 XFreeGC(dpy, dc.gc);
38 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
39 XSync(dpy, False);
40 }
42 static void
43 scan()
44 {
45 unsigned int i, num;
46 Window *wins, d1, d2;
47 XWindowAttributes wa;
49 wins = NULL;
50 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
51 for(i = 0; i < num; i++) {
52 if(!XGetWindowAttributes(dpy, wins[i], &wa))
53 continue;
54 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
55 continue;
56 if(wa.map_state == IsViewable)
57 manage(wins[i], &wa);
58 }
59 }
60 if(wins)
61 XFree(wins);
62 }
64 static int
65 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
66 {
67 int status, format;
68 unsigned long res, extra;
69 Atom real;
71 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
72 &res, &extra, prop);
74 if(status != Success || *prop == 0) {
75 return 0;
76 }
77 if(res == 0) {
78 free((void *) *prop);
79 }
80 return res;
81 }
83 /*
84 * Startup Error handler to check if another window manager
85 * is already running.
86 */
87 static int
88 xerrorstart(Display *dsply, XErrorEvent *ee)
89 {
90 otherwm = True;
91 return -1;
92 }
94 /* extern */
96 char stext[1024];
97 Bool *seltag;
98 int screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
99 unsigned int ntags, numlockmask;
100 Atom wmatom[WMLast], netatom[NetLast];
101 Bool running = True;
102 Bool issel = True;
103 Client *clients = NULL;
104 Client *sel = NULL;
105 Cursor cursor[CurLast];
106 Display *dpy;
107 DC dc = {0};
108 Window root, barwin;
110 int
111 getproto(Window w)
112 {
113 int protos = 0;
114 int i;
115 long res;
116 Atom *protocols;
118 res = win_property(w, wmatom[WMProtocols], XA_ATOM, 20L,
119 ((unsigned char **)&protocols));
120 if(res <= 0) {
121 return protos;
122 }
123 for(i = 0; i < res; i++) {
124 if(protocols[i] == wmatom[WMDelete])
125 protos |= PROTODELWIN;
126 }
127 free((char *) protocols);
128 return protos;
129 }
131 void
132 sendevent(Window w, Atom a, long value)
133 {
134 XEvent e;
136 e.type = ClientMessage;
137 e.xclient.window = w;
138 e.xclient.message_type = a;
139 e.xclient.format = 32;
140 e.xclient.data.l[0] = value;
141 e.xclient.data.l[1] = CurrentTime;
142 XSendEvent(dpy, w, False, NoEventMask, &e);
143 XSync(dpy, False);
144 }
146 void
147 quit(Arg *arg)
148 {
149 running = False;
150 }
152 /*
153 * There's no way to check accesses to destroyed windows, thus those cases are
154 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
155 * default error handler, which calls exit().
156 */
157 int
158 xerror(Display *dpy, XErrorEvent *ee)
159 {
160 if(ee->error_code == BadWindow
161 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
162 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
163 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
164 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
165 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
166 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess))
167 return 0;
168 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
169 ee->request_code, ee->error_code);
170 return xerrorxlib(dpy, ee); /* may call exit() */
171 }
173 int
174 main(int argc, char *argv[])
175 {
176 int i, j, xfd;
177 unsigned int mask;
178 fd_set rd;
179 Bool readin = True;
180 Window w;
181 XModifierKeymap *modmap;
182 XSetWindowAttributes wa;
184 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
185 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
186 exit(EXIT_SUCCESS);
187 }
188 else if(argc != 1)
189 eprint("usage: dwm [-v]\n");
191 dpy = XOpenDisplay(0);
192 if(!dpy)
193 eprint("dwm: cannot open display\n");
195 xfd = ConnectionNumber(dpy);
196 screen = DefaultScreen(dpy);
197 root = RootWindow(dpy, screen);
199 otherwm = False;
200 XSetErrorHandler(xerrorstart);
201 /* this causes an error if some other window manager is running */
202 XSelectInput(dpy, root, SubstructureRedirectMask);
203 XSync(dpy, False);
205 if(otherwm)
206 eprint("dwm: another window manager is already running\n");
208 XSync(dpy, False);
209 XSetErrorHandler(NULL);
210 xerrorxlib = XSetErrorHandler(xerror);
211 XSync(dpy, False);
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 modmap = XGetModifierMapping(dpy);
227 for (i = 0; i < 8; i++) {
228 for (j = 0; j < modmap->max_keypermod; j++) {
229 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
230 numlockmask = (1 << i);
231 }
232 }
233 XFree(modmap);
235 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask | EnterWindowMask | LeaveWindowMask;
236 wa.cursor = cursor[CurNormal];
237 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
239 grabkeys();
240 initrregs();
242 for(ntags = 0; tags[ntags]; ntags++);
243 seltag = emallocz(sizeof(Bool) * ntags);
244 seltag[DEFTAG] = True;
246 /* style */
247 dc.bg = getcolor(BGCOLOR);
248 dc.fg = getcolor(FGCOLOR);
249 dc.border = getcolor(BORDERCOLOR);
250 setfont(FONT);
252 sx = sy = 0;
253 sw = DisplayWidth(dpy, screen);
254 sh = DisplayHeight(dpy, screen);
255 mw = (sw * MASTERW) / 100;
257 bx = by = 0;
258 bw = sw;
259 dc.h = bh = dc.font.height + 4;
260 wa.override_redirect = 1;
261 wa.background_pixmap = ParentRelative;
262 wa.event_mask = ButtonPressMask | ExposureMask;
263 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
264 CopyFromParent, DefaultVisual(dpy, screen),
265 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
266 XDefineCursor(dpy, barwin, cursor[CurNormal]);
267 XMapRaised(dpy, barwin);
269 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
270 dc.gc = XCreateGC(dpy, root, 0, 0);
272 strcpy(stext, "dwm-"VERSION);
273 drawstatus();
275 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
277 scan();
279 /* main event loop, also reads status text from stdin */
280 XSync(dpy, False);
281 procevent();
282 while(running) {
283 FD_ZERO(&rd);
284 if(readin)
285 FD_SET(STDIN_FILENO, &rd);
286 FD_SET(xfd, &rd);
287 i = select(xfd + 1, &rd, NULL, NULL, NULL);
288 if(i == -1 && errno == EINTR)
289 continue;
290 if(i < 0)
291 eprint("select failed\n");
292 else if(i > 0) {
293 if(readin && FD_ISSET(STDIN_FILENO, &rd)) {
294 readin = NULL != fgets(stext, sizeof(stext), stdin);
295 if(readin)
296 stext[strlen(stext) - 1] = 0;
297 else
298 strcpy(stext, "broken pipe");
299 drawstatus();
300 }
301 }
302 procevent();
303 }
304 cleanup();
305 XCloseDisplay(dpy);
307 return 0;
308 }