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annotate main.c @ 664:a3cdba5f2a33

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switching to roman tags, I need more tags
author Anselm R. Garbe <arg@suckless.org>
date Fri, 05 Jan 2007 22:13:44 +0100
parents 8e6d75c68b69
children 5d79c351e30a
rev   line source
arg@644 1 /* (C)opyright MMVI-MMVII 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>
arg@619 7 #include <locale.h>
garbeam@0 8 #include <stdio.h>
garbeam@0 9 #include <stdlib.h>
garbeam@57 10 #include <string.h>
garbeam@59 11 #include <unistd.h>
arg@138 12 #include <sys/select.h>
garbeam@0 13 #include <X11/cursorfont.h>
arg@291 14 #include <X11/keysym.h>
garbeam@0 15 #include <X11/Xatom.h>
garbeam@0 16 #include <X11/Xproto.h>
garbeam@0 17
arg@333 18 /* extern */
arg@333 19
arg@333 20 char stext[1024];
arg@333 21 Bool *seltag;
arg@565 22 int bx, by, bw, bh, bmw, masterd, screen, sx, sy, sw, sh, wax, way, waw, wah;
arg@650 23 unsigned int master, nmaster, ntags, numlockmask;
arg@333 24 Atom wmatom[WMLast], netatom[NetLast];
arg@333 25 Bool running = True;
arg@333 26 Bool issel = True;
arg@333 27 Client *clients = NULL;
arg@333 28 Client *sel = NULL;
arg@446 29 Client *stack = NULL;
arg@333 30 Cursor cursor[CurLast];
arg@333 31 Display *dpy;
arg@333 32 DC dc = {0};
arg@333 33 Window root, barwin;
arg@333 34
garbeam@84 35 /* static */
garbeam@0 36
arg@123 37 static int (*xerrorxlib)(Display *, XErrorEvent *);
arg@302 38 static Bool otherwm, readin;
garbeam@0 39
garbeam@0 40 static void
arg@487 41 cleanup(void) {
arg@302 42 close(STDIN_FILENO);
arg@645 43 while(stack) {
arg@645 44 resize(stack, True, TopLeft);
arg@645 45 unmanage(stack);
garbeam@76 46 }
arg@295 47 if(dc.font.set)
arg@295 48 XFreeFontSet(dpy, dc.font.set);
arg@295 49 else
arg@295 50 XFreeFont(dpy, dc.font.xfont);
arg@292 51 XUngrabKey(dpy, AnyKey, AnyModifier, root);
arg@295 52 XFreePixmap(dpy, dc.drawable);
arg@295 53 XFreeGC(dpy, dc.gc);
arg@309 54 XDestroyWindow(dpy, barwin);
arg@616 55 XFreeCursor(dpy, cursor[CurNormal]);
arg@616 56 XFreeCursor(dpy, cursor[CurResize]);
arg@616 57 XFreeCursor(dpy, cursor[CurMove]);
garbeam@76 58 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
arg@292 59 XSync(dpy, False);
arg@433 60 free(seltag);
garbeam@76 61 }
garbeam@0 62
garbeam@0 63 static void
arg@487 64 scan(void) {
garbeam@0 65 unsigned int i, num;
arg@123 66 Window *wins, d1, d2;
garbeam@0 67 XWindowAttributes wa;
garbeam@0 68
arg@292 69 wins = NULL;
garbeam@0 70 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
garbeam@0 71 for(i = 0; i < num; i++) {
garbeam@0 72 if(!XGetWindowAttributes(dpy, wins[i], &wa))
garbeam@0 73 continue;
garbeam@0 74 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
garbeam@0 75 continue;
garbeam@0 76 if(wa.map_state == IsViewable)
garbeam@10 77 manage(wins[i], &wa);
garbeam@0 78 }
garbeam@0 79 }
garbeam@0 80 if(wins)
garbeam@0 81 XFree(wins);
garbeam@0 82 }
garbeam@0 83
arg@333 84 static void
arg@487 85 setup(void) {
arg@333 86 int i, j;
arg@333 87 unsigned int mask;
arg@333 88 Window w;
arg@333 89 XModifierKeymap *modmap;
arg@333 90 XSetWindowAttributes wa;
arg@333 91
arg@333 92 /* init atoms */
arg@333 93 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
arg@333 94 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
arg@333 95 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
arg@333 96 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
arg@333 97 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
arg@333 98 PropModeReplace, (unsigned char *) netatom, NetLast);
arg@333 99 /* init cursors */
arg@333 100 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
arg@333 101 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
arg@333 102 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
arg@532 103 /* init modifier map */
arg@333 104 modmap = XGetModifierMapping(dpy);
arg@333 105 for (i = 0; i < 8; i++) {
arg@333 106 for (j = 0; j < modmap->max_keypermod; j++) {
arg@333 107 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
arg@333 108 numlockmask = (1 << i);
arg@333 109 }
arg@333 110 }
arg@616 111 XFreeModifiermap(modmap);
arg@532 112 /* select for events */
arg@461 113 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
arg@461 114 | EnterWindowMask | LeaveWindowMask;
arg@333 115 wa.cursor = cursor[CurNormal];
arg@333 116 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
arg@333 117 grabkeys();
arg@333 118 initrregs();
arg@333 119 for(ntags = 0; tags[ntags]; ntags++);
arg@333 120 seltag = emallocz(sizeof(Bool) * ntags);
arg@333 121 seltag[0] = True;
arg@333 122 /* style */
arg@353 123 dc.norm[ColBG] = getcolor(NORMBGCOLOR);
arg@353 124 dc.norm[ColFG] = getcolor(NORMFGCOLOR);
arg@353 125 dc.sel[ColBG] = getcolor(SELBGCOLOR);
arg@353 126 dc.sel[ColFG] = getcolor(SELFGCOLOR);
arg@353 127 dc.status[ColBG] = getcolor(STATUSBGCOLOR);
arg@353 128 dc.status[ColFG] = getcolor(STATUSFGCOLOR);
arg@333 129 setfont(FONT);
arg@532 130 /* geometry */
arg@530 131 bmw = textw(TILESYMBOL) > textw(FLOATSYMBOL) ? textw(TILESYMBOL) : textw(FLOATSYMBOL);
arg@333 132 sx = sy = 0;
arg@333 133 sw = DisplayWidth(dpy, screen);
arg@333 134 sh = DisplayHeight(dpy, screen);
arg@524 135 master = MASTER;
arg@650 136 nmaster = NMASTER;
arg@532 137 /* bar */
arg@570 138 bx = sx;
arg@570 139 by = sy;
arg@333 140 bw = sw;
arg@353 141 dc.h = bh = dc.font.height + 2;
arg@333 142 wa.override_redirect = 1;
arg@333 143 wa.background_pixmap = ParentRelative;
arg@333 144 wa.event_mask = ButtonPressMask | ExposureMask;
arg@333 145 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
arg@333 146 CopyFromParent, DefaultVisual(dpy, screen),
arg@333 147 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
arg@333 148 XDefineCursor(dpy, barwin, cursor[CurNormal]);
arg@333 149 XMapRaised(dpy, barwin);
arg@532 150 strcpy(stext, "dwm-"VERSION);
arg@565 151 /* windowarea */
arg@565 152 wax = sx;
arg@570 153 way = sy + bh;
arg@565 154 wah = sh - bh;
arg@565 155 waw = sw;
arg@532 156 /* pixmap for everything */
arg@333 157 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
arg@333 158 dc.gc = XCreateGC(dpy, root, 0, 0);
arg@344 159 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
arg@532 160 /* multihead support */
arg@333 161 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
arg@333 162 }
arg@333 163
garbeam@76 164 /*
garbeam@76 165 * Startup Error handler to check if another window manager
garbeam@76 166 * is already running.
garbeam@76 167 */
garbeam@76 168 static int
arg@461 169 xerrorstart(Display *dsply, XErrorEvent *ee) {
garbeam@76 170 otherwm = True;
garbeam@76 171 return -1;
garbeam@76 172 }
garbeam@76 173
garbeam@84 174 /* extern */
garbeam@84 175
garbeam@13 176 int
arg@461 177 getproto(Window w) {
arg@329 178 int i, format, protos, status;
arg@328 179 unsigned long extra, res;
arg@328 180 Atom *protocols, real;
garbeam@13 181
arg@329 182 protos = 0;
arg@329 183 status = XGetWindowProperty(dpy, w, wmatom[WMProtocols], 0L, 20L, False,
arg@329 184 XA_ATOM, &real, &format, &res, &extra, (unsigned char **)&protocols);
arg@328 185 if(status != Success || protocols == 0)
garbeam@13 186 return protos;
arg@329 187 for(i = 0; i < res; i++)
garbeam@77 188 if(protocols[i] == wmatom[WMDelete])
arg@157 189 protos |= PROTODELWIN;
arg@328 190 free(protocols);
garbeam@13 191 return protos;
garbeam@13 192 }
garbeam@13 193
garbeam@13 194 void
arg@461 195 sendevent(Window w, Atom a, long value) {
garbeam@13 196 XEvent e;
garbeam@13 197
garbeam@13 198 e.type = ClientMessage;
garbeam@13 199 e.xclient.window = w;
garbeam@13 200 e.xclient.message_type = a;
garbeam@13 201 e.xclient.format = 32;
garbeam@13 202 e.xclient.data.l[0] = value;
garbeam@13 203 e.xclient.data.l[1] = CurrentTime;
garbeam@13 204 XSendEvent(dpy, w, False, NoEventMask, &e);
garbeam@79 205 XSync(dpy, False);
garbeam@13 206 }
garbeam@13 207
garbeam@76 208 void
arg@461 209 quit(Arg *arg) {
arg@302 210 readin = running = False;
garbeam@75 211 }
garbeam@75 212
arg@532 213 /* There's no way to check accesses to destroyed windows, thus those cases are
garbeam@84 214 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
arg@455 215 * default error handler, which may call exit.
garbeam@0 216 */
garbeam@10 217 int
arg@461 218 xerror(Display *dpy, XErrorEvent *ee) {
garbeam@75 219 if(ee->error_code == BadWindow
arg@123 220 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
arg@123 221 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
arg@123 222 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
arg@123 223 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
arg@123 224 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
arg@458 225 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
arg@458 226 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
garbeam@0 227 return 0;
garbeam@34 228 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
arg@123 229 ee->request_code, ee->error_code);
arg@455 230 return xerrorxlib(dpy, ee); /* may call exit */
garbeam@27 231 }
garbeam@27 232
garbeam@0 233 int
arg@461 234 main(int argc, char *argv[]) {
arg@581 235 char *p;
arg@333 236 int r, xfd;
garbeam@59 237 fd_set rd;
garbeam@0 238
arg@137 239 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
arg@644 240 fputs("dwm-"VERSION", (C)opyright MMVI-MMVII Anselm R. Garbe\n", stdout);
arg@137 241 exit(EXIT_SUCCESS);
garbeam@0 242 }
arg@137 243 else if(argc != 1)
arg@137 244 eprint("usage: dwm [-v]\n");
arg@619 245 setlocale(LC_CTYPE, "");
garbeam@0 246 dpy = XOpenDisplay(0);
garbeam@0 247 if(!dpy)
arg@197 248 eprint("dwm: cannot open display\n");
arg@265 249 xfd = ConnectionNumber(dpy);
garbeam@0 250 screen = DefaultScreen(dpy);
garbeam@0 251 root = RootWindow(dpy, screen);
garbeam@75 252 otherwm = False;
garbeam@75 253 XSetErrorHandler(xerrorstart);
arg@197 254 /* this causes an error if some other window manager is running */
garbeam@0 255 XSelectInput(dpy, root, SubstructureRedirectMask);
garbeam@78 256 XSync(dpy, False);
garbeam@75 257 if(otherwm)
garbeam@75 258 eprint("dwm: another window manager is already running\n");
garbeam@0 259
arg@292 260 XSync(dpy, False);
garbeam@78 261 XSetErrorHandler(NULL);
garbeam@75 262 xerrorxlib = XSetErrorHandler(xerror);
arg@275 263 XSync(dpy, False);
arg@333 264 setup();
garbeam@74 265 drawstatus();
garbeam@75 266 scan();
garbeam@3 267
arg@214 268 /* main event loop, also reads status text from stdin */
arg@242 269 XSync(dpy, False);
arg@292 270 procevent();
arg@302 271 readin = True;
garbeam@5 272 while(running) {
garbeam@59 273 FD_ZERO(&rd);
arg@164 274 if(readin)
arg@164 275 FD_SET(STDIN_FILENO, &rd);
arg@265 276 FD_SET(xfd, &rd);
arg@578 277 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
arg@578 278 if(errno == EINTR)
arg@578 279 continue;
arg@581 280 eprint("select failed\n");
arg@578 281 }
arg@578 282 if(FD_ISSET(STDIN_FILENO, &rd)) {
arg@581 283 switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
arg@578 284 case -1:
arg@581 285 strncpy(stext, strerror(errno), sizeof stext - 1);
arg@583 286 stext[sizeof stext - 1] = '\0';
arg@578 287 readin = False;
arg@578 288 break;
arg@578 289 case 0:
arg@583 290 strncpy(stext, "EOF", 4);
arg@578 291 readin = False;
arg@578 292 break;
arg@578 293 default:
arg@582 294 for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
arg@582 295 for(p = stext + strlen(stext) - 1; p >= stext && *p != '\n'; --p);
arg@581 296 if(p > stext)
arg@581 297 strncpy(stext, p + 1, sizeof stext);
garbeam@59 298 }
arg@578 299 drawstatus();
garbeam@59 300 }
arg@578 301 if(FD_ISSET(xfd, &rd))
arg@578 302 procevent();
garbeam@5 303 }
garbeam@0 304 cleanup();
garbeam@0 305 XCloseDisplay(dpy);
garbeam@0 306 return 0;
garbeam@0 307 }