dwm-meillo

annotate main.c @ 611:c7f84f23ec5a

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hotfix of a serious crashing bug
author arg@mig29
date Mon, 04 Dec 2006 21:00:26 +0100
parents 70472540c443
children f617c75a8405
rev   line source
arg@532 1 /* (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
garbeam@0 2 * See LICENSE file for license details.
garbeam@0 3 */
garbeam@0 4
garbeam@76 5 #include "dwm.h"
garbeam@59 6 #include <errno.h>
garbeam@0 7 #include <stdio.h>
garbeam@0 8 #include <stdlib.h>
garbeam@57 9 #include <string.h>
garbeam@59 10 #include <unistd.h>
arg@138 11 #include <sys/select.h>
garbeam@0 12 #include <X11/cursorfont.h>
arg@291 13 #include <X11/keysym.h>
garbeam@0 14 #include <X11/Xatom.h>
garbeam@0 15 #include <X11/Xproto.h>
garbeam@0 16
arg@333 17 /* extern */
arg@333 18
arg@333 19 char stext[1024];
arg@333 20 Bool *seltag;
arg@565 21 int bx, by, bw, bh, bmw, masterd, screen, sx, sy, sw, sh, wax, way, waw, wah;
arg@524 22 unsigned int master, ntags, numlockmask;
arg@333 23 Atom wmatom[WMLast], netatom[NetLast];
arg@333 24 Bool running = True;
arg@333 25 Bool issel = True;
arg@333 26 Client *clients = NULL;
arg@333 27 Client *sel = NULL;
arg@446 28 Client *stack = NULL;
arg@333 29 Cursor cursor[CurLast];
arg@333 30 Display *dpy;
arg@333 31 DC dc = {0};
arg@333 32 Window root, barwin;
arg@333 33
garbeam@84 34 /* static */
garbeam@0 35
arg@123 36 static int (*xerrorxlib)(Display *, XErrorEvent *);
arg@302 37 static Bool otherwm, readin;
garbeam@0 38
garbeam@0 39 static void
arg@487 40 cleanup(void) {
arg@302 41 close(STDIN_FILENO);
garbeam@76 42 while(sel) {
arg@99 43 resize(sel, True, TopLeft);
garbeam@76 44 unmanage(sel);
garbeam@76 45 }
arg@295 46 if(dc.font.set)
arg@295 47 XFreeFontSet(dpy, dc.font.set);
arg@295 48 else
arg@295 49 XFreeFont(dpy, dc.font.xfont);
arg@292 50 XUngrabKey(dpy, AnyKey, AnyModifier, root);
arg@295 51 XFreePixmap(dpy, dc.drawable);
arg@295 52 XFreeGC(dpy, dc.gc);
arg@309 53 XDestroyWindow(dpy, barwin);
garbeam@76 54 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
arg@292 55 XSync(dpy, False);
arg@433 56 free(seltag);
garbeam@76 57 }
garbeam@0 58
garbeam@0 59 static void
arg@487 60 scan(void) {
garbeam@0 61 unsigned int i, num;
arg@123 62 Window *wins, d1, d2;
garbeam@0 63 XWindowAttributes wa;
garbeam@0 64
arg@292 65 wins = NULL;
garbeam@0 66 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
garbeam@0 67 for(i = 0; i < num; i++) {
garbeam@0 68 if(!XGetWindowAttributes(dpy, wins[i], &wa))
garbeam@0 69 continue;
garbeam@0 70 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
garbeam@0 71 continue;
garbeam@0 72 if(wa.map_state == IsViewable)
garbeam@10 73 manage(wins[i], &wa);
garbeam@0 74 }
garbeam@0 75 }
garbeam@0 76 if(wins)
garbeam@0 77 XFree(wins);
garbeam@0 78 }
garbeam@0 79
arg@333 80 static void
arg@487 81 setup(void) {
arg@333 82 int i, j;
arg@333 83 unsigned int mask;
arg@333 84 Window w;
arg@333 85 XModifierKeymap *modmap;
arg@333 86 XSetWindowAttributes wa;
arg@333 87
arg@333 88 /* init atoms */
arg@333 89 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
arg@333 90 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
arg@333 91 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
arg@333 92 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
arg@333 93 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
arg@333 94 PropModeReplace, (unsigned char *) netatom, NetLast);
arg@333 95 /* init cursors */
arg@333 96 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
arg@333 97 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
arg@333 98 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
arg@532 99 /* init modifier map */
arg@333 100 modmap = XGetModifierMapping(dpy);
arg@333 101 for (i = 0; i < 8; i++) {
arg@333 102 for (j = 0; j < modmap->max_keypermod; j++) {
arg@333 103 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
arg@333 104 numlockmask = (1 << i);
arg@333 105 }
arg@333 106 }
arg@333 107 XFree(modmap);
arg@532 108 /* select for events */
arg@461 109 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
arg@461 110 | EnterWindowMask | LeaveWindowMask;
arg@333 111 wa.cursor = cursor[CurNormal];
arg@333 112 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
arg@333 113 grabkeys();
arg@333 114 initrregs();
arg@333 115 for(ntags = 0; tags[ntags]; ntags++);
arg@333 116 seltag = emallocz(sizeof(Bool) * ntags);
arg@333 117 seltag[0] = True;
arg@333 118 /* style */
arg@353 119 dc.norm[ColBG] = getcolor(NORMBGCOLOR);
arg@353 120 dc.norm[ColFG] = getcolor(NORMFGCOLOR);
arg@353 121 dc.sel[ColBG] = getcolor(SELBGCOLOR);
arg@353 122 dc.sel[ColFG] = getcolor(SELFGCOLOR);
arg@353 123 dc.status[ColBG] = getcolor(STATUSBGCOLOR);
arg@353 124 dc.status[ColFG] = getcolor(STATUSFGCOLOR);
arg@333 125 setfont(FONT);
arg@532 126 /* geometry */
arg@530 127 bmw = textw(TILESYMBOL) > textw(FLOATSYMBOL) ? textw(TILESYMBOL) : textw(FLOATSYMBOL);
arg@333 128 sx = sy = 0;
arg@333 129 sw = DisplayWidth(dpy, screen);
arg@333 130 sh = DisplayHeight(dpy, screen);
arg@524 131 master = MASTER;
arg@532 132 /* bar */
arg@570 133 bx = sx;
arg@570 134 by = sy;
arg@333 135 bw = sw;
arg@353 136 dc.h = bh = dc.font.height + 2;
arg@333 137 wa.override_redirect = 1;
arg@333 138 wa.background_pixmap = ParentRelative;
arg@333 139 wa.event_mask = ButtonPressMask | ExposureMask;
arg@333 140 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
arg@333 141 CopyFromParent, DefaultVisual(dpy, screen),
arg@333 142 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
arg@333 143 XDefineCursor(dpy, barwin, cursor[CurNormal]);
arg@333 144 XMapRaised(dpy, barwin);
arg@532 145 strcpy(stext, "dwm-"VERSION);
arg@565 146 /* windowarea */
arg@565 147 wax = sx;
arg@570 148 way = sy + bh;
arg@565 149 wah = sh - bh;
arg@565 150 waw = sw;
arg@532 151 /* pixmap for everything */
arg@333 152 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
arg@333 153 dc.gc = XCreateGC(dpy, root, 0, 0);
arg@344 154 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
arg@532 155 /* multihead support */
arg@333 156 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
arg@333 157 }
arg@333 158
garbeam@76 159 /*
garbeam@76 160 * Startup Error handler to check if another window manager
garbeam@76 161 * is already running.
garbeam@76 162 */
garbeam@76 163 static int
arg@461 164 xerrorstart(Display *dsply, XErrorEvent *ee) {
garbeam@76 165 otherwm = True;
garbeam@76 166 return -1;
garbeam@76 167 }
garbeam@76 168
garbeam@84 169 /* extern */
garbeam@84 170
garbeam@13 171 int
arg@461 172 getproto(Window w) {
arg@329 173 int i, format, protos, status;
arg@328 174 unsigned long extra, res;
arg@328 175 Atom *protocols, real;
garbeam@13 176
arg@329 177 protos = 0;
arg@329 178 status = XGetWindowProperty(dpy, w, wmatom[WMProtocols], 0L, 20L, False,
arg@329 179 XA_ATOM, &real, &format, &res, &extra, (unsigned char **)&protocols);
arg@328 180 if(status != Success || protocols == 0)
garbeam@13 181 return protos;
arg@329 182 for(i = 0; i < res; i++)
garbeam@77 183 if(protocols[i] == wmatom[WMDelete])
arg@157 184 protos |= PROTODELWIN;
arg@328 185 free(protocols);
garbeam@13 186 return protos;
garbeam@13 187 }
garbeam@13 188
garbeam@13 189 void
arg@461 190 sendevent(Window w, Atom a, long value) {
garbeam@13 191 XEvent e;
garbeam@13 192
garbeam@13 193 e.type = ClientMessage;
garbeam@13 194 e.xclient.window = w;
garbeam@13 195 e.xclient.message_type = a;
garbeam@13 196 e.xclient.format = 32;
garbeam@13 197 e.xclient.data.l[0] = value;
garbeam@13 198 e.xclient.data.l[1] = CurrentTime;
garbeam@13 199 XSendEvent(dpy, w, False, NoEventMask, &e);
garbeam@79 200 XSync(dpy, False);
garbeam@13 201 }
garbeam@13 202
garbeam@76 203 void
arg@461 204 quit(Arg *arg) {
arg@302 205 readin = running = False;
garbeam@75 206 }
garbeam@75 207
arg@532 208 /* There's no way to check accesses to destroyed windows, thus those cases are
garbeam@84 209 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
arg@455 210 * default error handler, which may call exit.
garbeam@0 211 */
garbeam@10 212 int
arg@461 213 xerror(Display *dpy, XErrorEvent *ee) {
garbeam@75 214 if(ee->error_code == BadWindow
arg@123 215 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
arg@123 216 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
arg@123 217 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
arg@123 218 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
arg@123 219 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
arg@458 220 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
arg@458 221 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
garbeam@0 222 return 0;
garbeam@34 223 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
arg@123 224 ee->request_code, ee->error_code);
arg@455 225 return xerrorxlib(dpy, ee); /* may call exit */
garbeam@27 226 }
garbeam@27 227
garbeam@0 228 int
arg@461 229 main(int argc, char *argv[]) {
arg@581 230 char *p;
arg@333 231 int r, xfd;
garbeam@59 232 fd_set rd;
garbeam@0 233
arg@137 234 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
arg@137 235 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
arg@137 236 exit(EXIT_SUCCESS);
garbeam@0 237 }
arg@137 238 else if(argc != 1)
arg@137 239 eprint("usage: dwm [-v]\n");
garbeam@0 240 dpy = XOpenDisplay(0);
garbeam@0 241 if(!dpy)
arg@197 242 eprint("dwm: cannot open display\n");
arg@265 243 xfd = ConnectionNumber(dpy);
garbeam@0 244 screen = DefaultScreen(dpy);
garbeam@0 245 root = RootWindow(dpy, screen);
garbeam@75 246 otherwm = False;
garbeam@75 247 XSetErrorHandler(xerrorstart);
arg@197 248 /* this causes an error if some other window manager is running */
garbeam@0 249 XSelectInput(dpy, root, SubstructureRedirectMask);
garbeam@78 250 XSync(dpy, False);
garbeam@75 251 if(otherwm)
garbeam@75 252 eprint("dwm: another window manager is already running\n");
garbeam@0 253
arg@292 254 XSync(dpy, False);
garbeam@78 255 XSetErrorHandler(NULL);
garbeam@75 256 xerrorxlib = XSetErrorHandler(xerror);
arg@275 257 XSync(dpy, False);
arg@333 258 setup();
garbeam@74 259 drawstatus();
garbeam@75 260 scan();
garbeam@3 261
arg@214 262 /* main event loop, also reads status text from stdin */
arg@242 263 XSync(dpy, False);
arg@292 264 procevent();
arg@302 265 readin = True;
garbeam@5 266 while(running) {
garbeam@59 267 FD_ZERO(&rd);
arg@164 268 if(readin)
arg@164 269 FD_SET(STDIN_FILENO, &rd);
arg@265 270 FD_SET(xfd, &rd);
arg@578 271 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
arg@578 272 if(errno == EINTR)
arg@578 273 continue;
arg@581 274 eprint("select failed\n");
arg@578 275 }
arg@578 276 if(FD_ISSET(STDIN_FILENO, &rd)) {
arg@581 277 switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
arg@578 278 case -1:
arg@581 279 strncpy(stext, strerror(errno), sizeof stext - 1);
arg@583 280 stext[sizeof stext - 1] = '\0';
arg@578 281 readin = False;
arg@578 282 break;
arg@578 283 case 0:
arg@583 284 strncpy(stext, "EOF", 4);
arg@578 285 readin = False;
arg@578 286 break;
arg@578 287 default:
arg@582 288 for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
arg@582 289 for(p = stext + strlen(stext) - 1; p >= stext && *p != '\n'; --p);
arg@581 290 if(p > stext)
arg@581 291 strncpy(stext, p + 1, sizeof stext);
garbeam@59 292 }
arg@578 293 drawstatus();
garbeam@59 294 }
arg@578 295 if(FD_ISSET(xfd, &rd))
arg@578 296 procevent();
garbeam@5 297 }
garbeam@0 298 cleanup();
garbeam@0 299 XCloseDisplay(dpy);
garbeam@0 300 return 0;
garbeam@0 301 }