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view main.c @ 364:d955a84b7d4b
updated man page of dwm
| author | Anselm R. Garbe <arg@10kloc.org> |
|---|---|
| date | Fri, 25 Aug 2006 16:21:45 +0200 |
| parents | 175045ce7537 |
| children | 052657ff2e7b |
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 /* extern */
20 char stext[1024];
21 Bool *seltag;
22 int bx, by, bw, bh, bmw, mw, screen, sx, sy, sw, sh;
23 unsigned int ntags, numlockmask;
24 Atom wmatom[WMLast], netatom[NetLast];
25 Bool running = True;
26 Bool issel = True;
27 Client *clients = NULL;
28 Client *sel = NULL;
29 Cursor cursor[CurLast];
30 Display *dpy;
31 DC dc = {0};
32 Window root, barwin;
34 /* static */
36 static int (*xerrorxlib)(Display *, XErrorEvent *);
37 static Bool otherwm, readin;
39 static void
40 cleanup()
41 {
42 close(STDIN_FILENO);
43 while(sel) {
44 resize(sel, True, TopLeft);
45 unmanage(sel);
46 }
47 if(dc.font.set)
48 XFreeFontSet(dpy, dc.font.set);
49 else
50 XFreeFont(dpy, dc.font.xfont);
51 XUngrabKey(dpy, AnyKey, AnyModifier, root);
52 XFreePixmap(dpy, dc.drawable);
53 XFreeGC(dpy, dc.gc);
54 XDestroyWindow(dpy, barwin);
55 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
56 XSync(dpy, False);
57 }
59 static void
60 scan()
61 {
62 unsigned int i, num;
63 Window *wins, d1, d2;
64 XWindowAttributes wa;
66 wins = NULL;
67 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
68 for(i = 0; i < num; i++) {
69 if(!XGetWindowAttributes(dpy, wins[i], &wa))
70 continue;
71 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
72 continue;
73 if(wa.map_state == IsViewable)
74 manage(wins[i], &wa);
75 }
76 }
77 if(wins)
78 XFree(wins);
79 }
81 static void
82 setup()
83 {
84 int i, j;
85 unsigned int mask;
86 Window w;
87 XModifierKeymap *modmap;
88 XSetWindowAttributes wa;
90 /* init atoms */
91 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
92 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
93 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
94 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
95 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
96 PropModeReplace, (unsigned char *) netatom, NetLast);
98 /* init cursors */
99 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
100 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
101 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
103 modmap = XGetModifierMapping(dpy);
104 for (i = 0; i < 8; i++) {
105 for (j = 0; j < modmap->max_keypermod; j++) {
106 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
107 numlockmask = (1 << i);
108 }
109 }
110 XFree(modmap);
112 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask | EnterWindowMask | LeaveWindowMask;
113 wa.cursor = cursor[CurNormal];
114 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
116 grabkeys();
117 initrregs();
119 for(ntags = 0; tags[ntags]; ntags++);
120 seltag = emallocz(sizeof(Bool) * ntags);
121 seltag[0] = True;
123 /* style */
124 dc.norm[ColBG] = getcolor(NORMBGCOLOR);
125 dc.norm[ColFG] = getcolor(NORMFGCOLOR);
126 dc.sel[ColBG] = getcolor(SELBGCOLOR);
127 dc.sel[ColFG] = getcolor(SELFGCOLOR);
128 dc.status[ColBG] = getcolor(STATUSBGCOLOR);
129 dc.status[ColFG] = getcolor(STATUSFGCOLOR);
130 setfont(FONT);
132 bmw = textw(FLOATSYMBOL) > textw(TILESYMBOL) ? textw(FLOATSYMBOL) : textw(TILESYMBOL);
133 sx = sy = 0;
134 sw = DisplayWidth(dpy, screen);
135 sh = DisplayHeight(dpy, screen);
136 mw = (sw * MASTERW) / 100;
138 bx = by = 0;
139 bw = sw;
140 dc.h = bh = dc.font.height + 2;
141 wa.override_redirect = 1;
142 wa.background_pixmap = ParentRelative;
143 wa.event_mask = ButtonPressMask | ExposureMask;
144 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
145 CopyFromParent, DefaultVisual(dpy, screen),
146 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
147 XDefineCursor(dpy, barwin, cursor[CurNormal]);
148 XMapRaised(dpy, barwin);
150 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
151 dc.gc = XCreateGC(dpy, root, 0, 0);
152 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
154 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
155 strcpy(stext, "dwm-"VERSION);
156 }
158 /*
159 * Startup Error handler to check if another window manager
160 * is already running.
161 */
162 static int
163 xerrorstart(Display *dsply, XErrorEvent *ee)
164 {
165 otherwm = True;
166 return -1;
167 }
169 /* extern */
171 int
172 getproto(Window w)
173 {
174 int i, format, protos, status;
175 unsigned long extra, res;
176 Atom *protocols, real;
178 protos = 0;
179 status = XGetWindowProperty(dpy, w, wmatom[WMProtocols], 0L, 20L, False,
180 XA_ATOM, &real, &format, &res, &extra, (unsigned char **)&protocols);
181 if(status != Success || protocols == 0)
182 return protos;
183 for(i = 0; i < res; i++)
184 if(protocols[i] == wmatom[WMDelete])
185 protos |= PROTODELWIN;
186 free(protocols);
187 return protos;
188 }
190 void
191 sendevent(Window w, Atom a, long value)
192 {
193 XEvent e;
195 e.type = ClientMessage;
196 e.xclient.window = w;
197 e.xclient.message_type = a;
198 e.xclient.format = 32;
199 e.xclient.data.l[0] = value;
200 e.xclient.data.l[1] = CurrentTime;
201 XSendEvent(dpy, w, False, NoEventMask, &e);
202 XSync(dpy, False);
203 }
205 void
206 quit(Arg *arg)
207 {
208 readin = running = False;
209 }
211 /*
212 * There's no way to check accesses to destroyed windows, thus those cases are
213 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
214 * default error handler, which calls exit().
215 */
216 int
217 xerror(Display *dpy, XErrorEvent *ee)
218 {
219 if(ee->error_code == BadWindow
220 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
221 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
222 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
223 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
224 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
225 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess))
226 return 0;
227 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
228 ee->request_code, ee->error_code);
229 return xerrorxlib(dpy, ee); /* may call exit() */
230 }
232 int
233 main(int argc, char *argv[])
234 {
235 int r, xfd;
236 fd_set rd;
238 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
239 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
240 exit(EXIT_SUCCESS);
241 }
242 else if(argc != 1)
243 eprint("usage: dwm [-v]\n");
245 dpy = XOpenDisplay(0);
246 if(!dpy)
247 eprint("dwm: cannot open display\n");
249 xfd = ConnectionNumber(dpy);
250 screen = DefaultScreen(dpy);
251 root = RootWindow(dpy, screen);
253 otherwm = False;
254 XSetErrorHandler(xerrorstart);
255 /* this causes an error if some other window manager is running */
256 XSelectInput(dpy, root, SubstructureRedirectMask);
257 XSync(dpy, False);
259 if(otherwm)
260 eprint("dwm: another window manager is already running\n");
262 XSync(dpy, False);
263 XSetErrorHandler(NULL);
264 xerrorxlib = XSetErrorHandler(xerror);
265 XSync(dpy, False);
267 setup();
268 drawstatus();
269 scan();
271 /* main event loop, also reads status text from stdin */
272 XSync(dpy, False);
273 procevent();
274 readin = True;
275 while(running) {
276 FD_ZERO(&rd);
277 if(readin)
278 FD_SET(STDIN_FILENO, &rd);
279 FD_SET(xfd, &rd);
280 r = select(xfd + 1, &rd, NULL, NULL, NULL);
281 if((r == -1) && (errno == EINTR))
282 continue;
283 if(r > 0) {
284 if(readin && FD_ISSET(STDIN_FILENO, &rd)) {
285 readin = NULL != fgets(stext, sizeof(stext), stdin);
286 if(readin)
287 stext[strlen(stext) - 1] = 0;
288 else
289 strcpy(stext, "broken pipe");
290 drawstatus();
291 }
292 }
293 else if(r < 0)
294 eprint("select failed\n");
295 procevent();
296 }
297 cleanup();
298 XCloseDisplay(dpy);
300 return 0;
301 }