dwm-meillo
view main.c @ 76:4bd49f404f10
proceeded with cleaning up, sorting functions, etc
| author | Anselm R. Garbe <garbeam@wmii.de> |
|---|---|
| date | Sat, 15 Jul 2006 17:00:56 +0200 |
| parents | f08271b7cb20 |
| children | 38c8f7f7d401 |
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 wm_atom[WMLast], net_atom[NetLast];
20 Cursor cursor[CurLast];
21 Bool running = True;
22 Bool issel;
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 const char version[] =
34 "dwm-" VERSION ", (C)opyright MMVI Anselm R. Garbe\n";
35 static int (*xerrorxlib)(Display *, XErrorEvent *);
37 /* static functions */
39 static void
40 cleanup()
41 {
42 while(sel) {
43 resize(sel, True);
44 unmanage(sel);
45 }
46 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
47 }
49 static void
50 scan()
51 {
52 unsigned int i, num;
53 Window *wins;
54 XWindowAttributes wa;
55 Window d1, d2;
57 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
58 for(i = 0; i < num; i++) {
59 if(!XGetWindowAttributes(dpy, wins[i], &wa))
60 continue;
61 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
62 continue;
63 if(wa.map_state == IsViewable)
64 manage(wins[i], &wa);
65 }
66 }
67 if(wins)
68 XFree(wins);
69 }
71 static int
72 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
73 {
74 Atom real;
75 int format;
76 unsigned long res, extra;
77 int status;
79 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
80 &res, &extra, prop);
82 if(status != Success || *prop == 0) {
83 return 0;
84 }
85 if(res == 0) {
86 free((void *) *prop);
87 }
88 return res;
89 }
91 /*
92 * Startup Error handler to check if another window manager
93 * is already running.
94 */
95 static int
96 xerrorstart(Display *dsply, XErrorEvent *ee)
97 {
98 otherwm = True;
99 return -1;
100 }
102 /* extern functions */
104 int
105 getproto(Window w)
106 {
107 unsigned char *protocols;
108 long res;
109 int protos = 0;
110 int i;
112 res = win_property(w, wm_atom[WMProtocols], XA_ATOM, 20L, &protocols);
113 if(res <= 0) {
114 return protos;
115 }
116 for(i = 0; i < res; i++) {
117 if(protocols[i] == wm_atom[WMDelete])
118 protos |= WM_PROTOCOL_DELWIN;
119 }
120 free((char *) protocols);
121 return protos;
122 }
124 void
125 sendevent(Window w, Atom a, long value)
126 {
127 XEvent e;
129 e.type = ClientMessage;
130 e.xclient.window = w;
131 e.xclient.message_type = a;
132 e.xclient.format = 32;
133 e.xclient.data.l[0] = value;
134 e.xclient.data.l[1] = CurrentTime;
135 XSendEvent(dpy, w, False, NoEventMask, &e);
136 XFlush(dpy);
137 }
139 void
140 quit(Arg *arg)
141 {
142 running = False;
143 }
145 /*
146 * There's no way to check accesses to destroyed windows, thus
147 * those cases are ignored (especially on UnmapNotify's).
148 * Other types of errors call Xlib's default error handler, which
149 * calls exit().
150 */
151 int
152 xerror(Display *dpy, XErrorEvent *ee)
153 {
154 if(ee->error_code == BadWindow
155 || (ee->request_code == X_SetInputFocus
156 && ee->error_code == BadMatch)
157 || (ee->request_code == X_PolyText8
158 && ee->error_code == BadDrawable)
159 || (ee->request_code == X_PolyFillRectangle
160 && ee->error_code == BadDrawable)
161 || (ee->request_code == X_PolySegment
162 && ee->error_code == BadDrawable)
163 || (ee->request_code == X_ConfigureWindow
164 && ee->error_code == BadMatch)
165 || (ee->request_code == X_GrabKey
166 && 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, n;
177 fd_set rd;
178 XSetWindowAttributes wa;
179 unsigned int mask;
180 Bool readstdin = True;
181 Window w;
182 XEvent ev;
184 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
185 switch (argv[i][1]) {
186 case 'v':
187 fprintf(stdout, "%s", version);
188 exit(0);
189 break;
190 default:
191 eprint("usage: dwm [-v]\n");
192 break;
193 }
194 }
196 dpy = XOpenDisplay(0);
197 if(!dpy)
198 eprint("dwm: cannot connect X server\n");
200 screen = DefaultScreen(dpy);
201 root = RootWindow(dpy, screen);
203 /* check if another WM is already running */
204 otherwm = False;
205 XSetErrorHandler(xerrorstart);
206 /* this causes an error if some other WM is running */
207 XSelectInput(dpy, root, SubstructureRedirectMask);
208 XFlush(dpy);
210 if(otherwm)
211 eprint("dwm: another window manager is already running\n");
213 XSetErrorHandler(0);
214 xerrorxlib = XSetErrorHandler(xerror);
216 /* init atoms */
217 wm_atom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
218 wm_atom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
219 net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
220 net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
221 XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32,
222 PropModeReplace, (unsigned char *) net_atom, NetLast);
224 /* init cursors */
225 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
226 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
227 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
229 grabkeys();
231 /* style */
232 dc.bg = getcolor(BGCOLOR);
233 dc.fg = getcolor(FGCOLOR);
234 dc.border = getcolor(BORDERCOLOR);
235 setfont(FONT);
237 sx = sy = 0;
238 sw = DisplayWidth(dpy, screen);
239 sh = DisplayHeight(dpy, screen);
240 mw = (sw * MASTERW) / 100;
242 wa.override_redirect = 1;
243 wa.background_pixmap = ParentRelative;
244 wa.event_mask = ButtonPressMask | ExposureMask;
246 bx = by = 0;
247 bw = sw;
248 dc.h = bh = dc.font.height + 4;
249 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
250 CopyFromParent, DefaultVisual(dpy, screen),
251 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
252 XDefineCursor(dpy, barwin, cursor[CurNormal]);
253 XMapRaised(dpy, barwin);
255 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
256 dc.gc = XCreateGC(dpy, root, 0, 0);
257 drawstatus();
259 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
261 wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
262 | LeaveWindowMask;
263 wa.cursor = cursor[CurNormal];
265 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
267 strcpy(stext, "dwm-"VERSION);
268 scan();
270 /* main event loop, reads status text from stdin as well */
271 Mainloop:
272 while(running) {
273 FD_ZERO(&rd);
274 if(readstdin)
275 FD_SET(STDIN_FILENO, &rd);
276 FD_SET(ConnectionNumber(dpy), &rd);
278 i = select(ConnectionNumber(dpy) + 1, &rd, 0, 0, 0);
279 if(i == -1 && errno == EINTR)
280 continue;
281 if(i < 0)
282 eprint("select failed\n");
283 else if(i > 0) {
284 if(FD_ISSET(ConnectionNumber(dpy), &rd)) {
285 while(XPending(dpy)) {
286 XNextEvent(dpy, &ev);
287 if(handler[ev.type])
288 (handler[ev.type])(&ev); /* call handler */
289 }
290 }
291 if(readstdin && FD_ISSET(STDIN_FILENO, &rd)) {
292 i = n = 0;
293 for(;;) {
294 if((i = getchar()) == EOF) {
295 /* broken pipe/end of producer */
296 readstdin = False;
297 strcpy(stext, "broken pipe");
298 goto Mainloop;
299 }
300 if(i == '\n' || n >= sizeof(stext) - 1)
301 break;
302 stext[n++] = i;
303 }
304 stext[n] = 0;
305 drawstatus();
306 }
307 }
308 }
310 cleanup();
311 XCloseDisplay(dpy);
313 return 0;
314 }