aewl

view main.c @ 583:f4285a97e3e6

applied Jukka's patch preventing some cornercases and making the EOF error message correct
author arg@mig29
date Mon, 27 Nov 2006 10:29:47 +0100
parents 70472540c443
children f617c75a8405
line source
1 /* (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
2 * See LICENSE file for license details.
3 */
5 #include "dwm.h"
6 #include <errno.h>
7 #include <stdio.h>
8 #include <stdlib.h>
9 #include <string.h>
10 #include <unistd.h>
11 #include <sys/select.h>
12 #include <X11/cursorfont.h>
13 #include <X11/keysym.h>
14 #include <X11/Xatom.h>
15 #include <X11/Xproto.h>
17 /* extern */
19 char stext[1024];
20 Bool *seltag;
21 int bx, by, bw, bh, bmw, masterd, screen, sx, sy, sw, sh, wax, way, waw, wah;
22 unsigned int master, ntags, numlockmask;
23 Atom wmatom[WMLast], netatom[NetLast];
24 Bool running = True;
25 Bool issel = True;
26 Client *clients = NULL;
27 Client *sel = NULL;
28 Client *stack = 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(void) {
41 close(STDIN_FILENO);
42 while(sel) {
43 resize(sel, True, TopLeft);
44 unmanage(sel);
45 }
46 if(dc.font.set)
47 XFreeFontSet(dpy, dc.font.set);
48 else
49 XFreeFont(dpy, dc.font.xfont);
50 XUngrabKey(dpy, AnyKey, AnyModifier, root);
51 XFreePixmap(dpy, dc.drawable);
52 XFreeGC(dpy, dc.gc);
53 XDestroyWindow(dpy, barwin);
54 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
55 XSync(dpy, False);
56 free(seltag);
57 }
59 static void
60 scan(void) {
61 unsigned int i, num;
62 Window *wins, d1, d2;
63 XWindowAttributes wa;
65 wins = NULL;
66 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
67 for(i = 0; i < num; i++) {
68 if(!XGetWindowAttributes(dpy, wins[i], &wa))
69 continue;
70 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
71 continue;
72 if(wa.map_state == IsViewable)
73 manage(wins[i], &wa);
74 }
75 }
76 if(wins)
77 XFree(wins);
78 }
80 static void
81 setup(void) {
82 int i, j;
83 unsigned int mask;
84 Window w;
85 XModifierKeymap *modmap;
86 XSetWindowAttributes wa;
88 /* init atoms */
89 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
90 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
91 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
92 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
93 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
94 PropModeReplace, (unsigned char *) netatom, NetLast);
95 /* init cursors */
96 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
97 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
98 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
99 /* init modifier map */
100 modmap = XGetModifierMapping(dpy);
101 for (i = 0; i < 8; i++) {
102 for (j = 0; j < modmap->max_keypermod; j++) {
103 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
104 numlockmask = (1 << i);
105 }
106 }
107 XFree(modmap);
108 /* select for events */
109 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
110 | EnterWindowMask | LeaveWindowMask;
111 wa.cursor = cursor[CurNormal];
112 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
113 grabkeys();
114 initrregs();
115 for(ntags = 0; tags[ntags]; ntags++);
116 seltag = emallocz(sizeof(Bool) * ntags);
117 seltag[0] = True;
118 /* style */
119 dc.norm[ColBG] = getcolor(NORMBGCOLOR);
120 dc.norm[ColFG] = getcolor(NORMFGCOLOR);
121 dc.sel[ColBG] = getcolor(SELBGCOLOR);
122 dc.sel[ColFG] = getcolor(SELFGCOLOR);
123 dc.status[ColBG] = getcolor(STATUSBGCOLOR);
124 dc.status[ColFG] = getcolor(STATUSFGCOLOR);
125 setfont(FONT);
126 /* geometry */
127 bmw = textw(TILESYMBOL) > textw(FLOATSYMBOL) ? textw(TILESYMBOL) : textw(FLOATSYMBOL);
128 sx = sy = 0;
129 sw = DisplayWidth(dpy, screen);
130 sh = DisplayHeight(dpy, screen);
131 master = MASTER;
132 /* bar */
133 bx = sx;
134 by = sy;
135 bw = sw;
136 dc.h = bh = dc.font.height + 2;
137 wa.override_redirect = 1;
138 wa.background_pixmap = ParentRelative;
139 wa.event_mask = ButtonPressMask | ExposureMask;
140 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
141 CopyFromParent, DefaultVisual(dpy, screen),
142 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
143 XDefineCursor(dpy, barwin, cursor[CurNormal]);
144 XMapRaised(dpy, barwin);
145 strcpy(stext, "dwm-"VERSION);
146 /* windowarea */
147 wax = sx;
148 way = sy + bh;
149 wah = sh - bh;
150 waw = sw;
151 /* pixmap for everything */
152 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
153 dc.gc = XCreateGC(dpy, root, 0, 0);
154 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
155 /* multihead support */
156 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
157 }
159 /*
160 * Startup Error handler to check if another window manager
161 * is already running.
162 */
163 static int
164 xerrorstart(Display *dsply, XErrorEvent *ee) {
165 otherwm = True;
166 return -1;
167 }
169 /* extern */
171 int
172 getproto(Window w) {
173 int i, format, protos, status;
174 unsigned long extra, res;
175 Atom *protocols, real;
177 protos = 0;
178 status = XGetWindowProperty(dpy, w, wmatom[WMProtocols], 0L, 20L, False,
179 XA_ATOM, &real, &format, &res, &extra, (unsigned char **)&protocols);
180 if(status != Success || protocols == 0)
181 return protos;
182 for(i = 0; i < res; i++)
183 if(protocols[i] == wmatom[WMDelete])
184 protos |= PROTODELWIN;
185 free(protocols);
186 return protos;
187 }
189 void
190 sendevent(Window w, Atom a, long value) {
191 XEvent e;
193 e.type = ClientMessage;
194 e.xclient.window = w;
195 e.xclient.message_type = a;
196 e.xclient.format = 32;
197 e.xclient.data.l[0] = value;
198 e.xclient.data.l[1] = CurrentTime;
199 XSendEvent(dpy, w, False, NoEventMask, &e);
200 XSync(dpy, False);
201 }
203 void
204 quit(Arg *arg) {
205 readin = running = False;
206 }
208 /* There's no way to check accesses to destroyed windows, thus those cases are
209 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
210 * default error handler, which may call exit.
211 */
212 int
213 xerror(Display *dpy, XErrorEvent *ee) {
214 if(ee->error_code == BadWindow
215 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
216 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
217 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
218 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
219 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
220 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
221 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
222 return 0;
223 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
224 ee->request_code, ee->error_code);
225 return xerrorxlib(dpy, ee); /* may call exit */
226 }
228 int
229 main(int argc, char *argv[]) {
230 char *p;
231 int r, xfd;
232 fd_set rd;
234 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
235 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
236 exit(EXIT_SUCCESS);
237 }
238 else if(argc != 1)
239 eprint("usage: dwm [-v]\n");
240 dpy = XOpenDisplay(0);
241 if(!dpy)
242 eprint("dwm: cannot open display\n");
243 xfd = ConnectionNumber(dpy);
244 screen = DefaultScreen(dpy);
245 root = RootWindow(dpy, screen);
246 otherwm = False;
247 XSetErrorHandler(xerrorstart);
248 /* this causes an error if some other window manager is running */
249 XSelectInput(dpy, root, SubstructureRedirectMask);
250 XSync(dpy, False);
251 if(otherwm)
252 eprint("dwm: another window manager is already running\n");
254 XSync(dpy, False);
255 XSetErrorHandler(NULL);
256 xerrorxlib = XSetErrorHandler(xerror);
257 XSync(dpy, False);
258 setup();
259 drawstatus();
260 scan();
262 /* main event loop, also reads status text from stdin */
263 XSync(dpy, False);
264 procevent();
265 readin = True;
266 while(running) {
267 FD_ZERO(&rd);
268 if(readin)
269 FD_SET(STDIN_FILENO, &rd);
270 FD_SET(xfd, &rd);
271 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
272 if(errno == EINTR)
273 continue;
274 eprint("select failed\n");
275 }
276 if(FD_ISSET(STDIN_FILENO, &rd)) {
277 switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
278 case -1:
279 strncpy(stext, strerror(errno), sizeof stext - 1);
280 stext[sizeof stext - 1] = '\0';
281 readin = False;
282 break;
283 case 0:
284 strncpy(stext, "EOF", 4);
285 readin = False;
286 break;
287 default:
288 for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
289 for(p = stext + strlen(stext) - 1; p >= stext && *p != '\n'; --p);
290 if(p > stext)
291 strncpy(stext, p + 1, sizeof stext);
292 }
293 drawstatus();
294 }
295 if(FD_ISSET(xfd, &rd))
296 procevent();
297 }
298 cleanup();
299 XCloseDisplay(dpy);
300 return 0;
301 }