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| author | Anselm R. Garbe <garbeam@wmii.de> |
|---|---|
| date | Tue, 18 Jul 2006 11:45:32 +0200 |
| parents | 052fe7498930 |
| children | 5d88952cbf96 |
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 default:
183 eprint("usage: dwm [-v]\n");
184 break;
185 case 'v':
186 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
187 exit(EXIT_SUCCESS);
188 break;
189 }
190 }
192 dpy = XOpenDisplay(0);
193 if(!dpy)
194 eprint("dwm: cannot connect X server\n");
196 screen = DefaultScreen(dpy);
197 root = RootWindow(dpy, screen);
199 /* check if another WM is already running */
200 otherwm = False;
201 XSetErrorHandler(xerrorstart);
202 /* this causes an error if some other WM is running */
203 XSelectInput(dpy, root, SubstructureRedirectMask);
204 XSync(dpy, False);
206 if(otherwm)
207 eprint("dwm: another window manager is already running\n");
209 XSetErrorHandler(NULL);
210 xerrorxlib = XSetErrorHandler(xerror);
212 /* init atoms */
213 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
214 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
215 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
216 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
217 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
218 PropModeReplace, (unsigned char *) netatom, NetLast);
220 /* init cursors */
221 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
222 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
223 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
225 grabkeys();
227 /* style */
228 dc.bg = getcolor(BGCOLOR);
229 dc.fg = getcolor(FGCOLOR);
230 dc.border = getcolor(BORDERCOLOR);
231 setfont(FONT);
233 sx = sy = 0;
234 sw = DisplayWidth(dpy, screen);
235 sh = DisplayHeight(dpy, screen);
236 mw = (sw * MASTERW) / 100;
238 wa.override_redirect = 1;
239 wa.background_pixmap = ParentRelative;
240 wa.event_mask = ButtonPressMask | ExposureMask;
242 bx = by = 0;
243 bw = sw;
244 dc.h = bh = dc.font.height + 4;
245 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
246 CopyFromParent, DefaultVisual(dpy, screen),
247 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
248 XDefineCursor(dpy, barwin, cursor[CurNormal]);
249 XMapRaised(dpy, barwin);
251 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
252 dc.gc = XCreateGC(dpy, root, 0, 0);
253 drawstatus();
255 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
257 wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
258 | LeaveWindowMask;
259 wa.cursor = cursor[CurNormal];
261 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
263 strcpy(stext, "dwm-"VERSION);
264 scan();
266 /* main event loop, reads status text from stdin as well */
267 Mainloop:
268 while(running) {
269 FD_ZERO(&rd);
270 if(readstdin)
271 FD_SET(STDIN_FILENO, &rd);
272 FD_SET(ConnectionNumber(dpy), &rd);
274 i = select(ConnectionNumber(dpy) + 1, &rd, 0, 0, 0);
275 if(i == -1 && errno == EINTR)
276 continue;
277 if(i < 0)
278 eprint("select failed\n");
279 else if(i > 0) {
280 if(FD_ISSET(ConnectionNumber(dpy), &rd)) {
281 while(XPending(dpy)) {
282 XNextEvent(dpy, &ev);
283 if(handler[ev.type])
284 (handler[ev.type])(&ev); /* call handler */
285 }
286 }
287 if(readstdin && FD_ISSET(STDIN_FILENO, &rd)) {
288 i = n = 0;
289 for(;;) {
290 if((i = getchar()) == EOF) {
291 /* broken pipe/end of producer */
292 readstdin = False;
293 strcpy(stext, "broken pipe");
294 goto Mainloop;
295 }
296 if(i == '\n' || n >= sizeof(stext) - 1)
297 break;
298 stext[n++] = i;
299 }
300 stext[n] = 0;
301 drawstatus();
302 }
303 }
304 }
306 cleanup();
307 XCloseDisplay(dpy);
309 return 0;
310 }