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annotate main.c @ 708:a2d568a5cdb8

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applied Sanders all5.patch (thanks for your weekend session, Sander!)
author Anselm R. Garbe <arg@suckless.org>
date Mon, 22 Jan 2007 10:22:58 +0100
parents 4d12382fef8e
children 7034ee0f48d6
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@688 20 char stext[256];
arg@333 21 Bool *seltag;
arg@697 22 int bh, bmw, 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@708 44 resize(stack, True);
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@679 104 numlockmask = 0;
arg@333 105 modmap = XGetModifierMapping(dpy);
arg@333 106 for (i = 0; i < 8; i++) {
arg@333 107 for (j = 0; j < modmap->max_keypermod; j++) {
arg@333 108 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
arg@333 109 numlockmask = (1 << i);
arg@333 110 }
arg@333 111 }
arg@616 112 XFreeModifiermap(modmap);
arg@532 113 /* select for events */
arg@461 114 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
arg@461 115 | EnterWindowMask | LeaveWindowMask;
arg@333 116 wa.cursor = cursor[CurNormal];
arg@333 117 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
arg@333 118 grabkeys();
arg@333 119 initrregs();
arg@333 120 for(ntags = 0; tags[ntags]; ntags++);
arg@333 121 seltag = emallocz(sizeof(Bool) * ntags);
arg@333 122 seltag[0] = True;
arg@333 123 /* style */
arg@689 124 dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
arg@353 125 dc.norm[ColBG] = getcolor(NORMBGCOLOR);
arg@353 126 dc.norm[ColFG] = getcolor(NORMFGCOLOR);
arg@689 127 dc.sel[ColBorder] = getcolor(SELBORDERCOLOR);
arg@353 128 dc.sel[ColBG] = getcolor(SELBGCOLOR);
arg@353 129 dc.sel[ColFG] = getcolor(SELFGCOLOR);
arg@333 130 setfont(FONT);
arg@532 131 /* geometry */
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@688 137 bmw = textw(TILESYMBOL) > textw(FLOATSYMBOL) ? textw(TILESYMBOL) : textw(FLOATSYMBOL);
arg@532 138 /* bar */
arg@353 139 dc.h = bh = dc.font.height + 2;
arg@333 140 wa.override_redirect = 1;
arg@333 141 wa.background_pixmap = ParentRelative;
arg@333 142 wa.event_mask = ButtonPressMask | ExposureMask;
arg@697 143 barwin = XCreateWindow(dpy, root, sx, sy, sw, bh, 0, DefaultDepth(dpy, screen),
arg@333 144 CopyFromParent, DefaultVisual(dpy, screen),
arg@333 145 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
arg@333 146 XDefineCursor(dpy, barwin, cursor[CurNormal]);
arg@333 147 XMapRaised(dpy, barwin);
arg@532 148 strcpy(stext, "dwm-"VERSION);
arg@565 149 /* windowarea */
arg@565 150 wax = sx;
arg@570 151 way = sy + bh;
arg@565 152 wah = sh - bh;
arg@565 153 waw = sw;
arg@532 154 /* pixmap for everything */
arg@333 155 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
arg@333 156 dc.gc = XCreateGC(dpy, root, 0, 0);
arg@344 157 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
arg@532 158 /* multihead support */
arg@333 159 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
arg@333 160 }
arg@333 161
garbeam@76 162 /*
garbeam@76 163 * Startup Error handler to check if another window manager
garbeam@76 164 * is already running.
garbeam@76 165 */
garbeam@76 166 static int
arg@461 167 xerrorstart(Display *dsply, XErrorEvent *ee) {
garbeam@76 168 otherwm = True;
garbeam@76 169 return -1;
garbeam@76 170 }
garbeam@76 171
garbeam@84 172 /* extern */
garbeam@84 173
garbeam@13 174 int
arg@461 175 getproto(Window w) {
arg@329 176 int i, format, protos, status;
arg@328 177 unsigned long extra, res;
arg@328 178 Atom *protocols, real;
garbeam@13 179
arg@329 180 protos = 0;
arg@329 181 status = XGetWindowProperty(dpy, w, wmatom[WMProtocols], 0L, 20L, False,
arg@329 182 XA_ATOM, &real, &format, &res, &extra, (unsigned char **)&protocols);
arg@328 183 if(status != Success || protocols == 0)
garbeam@13 184 return protos;
arg@329 185 for(i = 0; i < res; i++)
garbeam@77 186 if(protocols[i] == wmatom[WMDelete])
arg@157 187 protos |= PROTODELWIN;
arg@328 188 free(protocols);
garbeam@13 189 return protos;
garbeam@13 190 }
garbeam@13 191
garbeam@13 192 void
arg@461 193 sendevent(Window w, Atom a, long value) {
garbeam@13 194 XEvent e;
garbeam@13 195
garbeam@13 196 e.type = ClientMessage;
garbeam@13 197 e.xclient.window = w;
garbeam@13 198 e.xclient.message_type = a;
garbeam@13 199 e.xclient.format = 32;
garbeam@13 200 e.xclient.data.l[0] = value;
garbeam@13 201 e.xclient.data.l[1] = CurrentTime;
garbeam@13 202 XSendEvent(dpy, w, False, NoEventMask, &e);
garbeam@79 203 XSync(dpy, False);
garbeam@13 204 }
garbeam@13 205
garbeam@76 206 void
arg@461 207 quit(Arg *arg) {
arg@302 208 readin = running = False;
garbeam@75 209 }
garbeam@75 210
arg@532 211 /* There's no way to check accesses to destroyed windows, thus those cases are
garbeam@84 212 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
arg@455 213 * default error handler, which may call exit.
garbeam@0 214 */
garbeam@10 215 int
arg@461 216 xerror(Display *dpy, XErrorEvent *ee) {
garbeam@75 217 if(ee->error_code == BadWindow
arg@123 218 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
arg@123 219 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
arg@123 220 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
arg@123 221 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
arg@123 222 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
arg@458 223 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
arg@458 224 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
garbeam@0 225 return 0;
garbeam@34 226 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
arg@123 227 ee->request_code, ee->error_code);
arg@455 228 return xerrorxlib(dpy, ee); /* may call exit */
garbeam@27 229 }
garbeam@27 230
garbeam@0 231 int
arg@461 232 main(int argc, char *argv[]) {
arg@581 233 char *p;
arg@333 234 int r, xfd;
garbeam@59 235 fd_set rd;
garbeam@0 236
arg@137 237 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
arg@644 238 fputs("dwm-"VERSION", (C)opyright MMVI-MMVII Anselm R. Garbe\n", stdout);
arg@137 239 exit(EXIT_SUCCESS);
garbeam@0 240 }
arg@137 241 else if(argc != 1)
arg@137 242 eprint("usage: dwm [-v]\n");
arg@619 243 setlocale(LC_CTYPE, "");
garbeam@0 244 dpy = XOpenDisplay(0);
garbeam@0 245 if(!dpy)
arg@197 246 eprint("dwm: cannot open display\n");
arg@265 247 xfd = ConnectionNumber(dpy);
garbeam@0 248 screen = DefaultScreen(dpy);
garbeam@0 249 root = RootWindow(dpy, screen);
garbeam@75 250 otherwm = False;
garbeam@75 251 XSetErrorHandler(xerrorstart);
arg@197 252 /* this causes an error if some other window manager is running */
garbeam@0 253 XSelectInput(dpy, root, SubstructureRedirectMask);
garbeam@78 254 XSync(dpy, False);
garbeam@75 255 if(otherwm)
garbeam@75 256 eprint("dwm: another window manager is already running\n");
garbeam@0 257
arg@292 258 XSync(dpy, False);
garbeam@78 259 XSetErrorHandler(NULL);
garbeam@75 260 xerrorxlib = XSetErrorHandler(xerror);
arg@275 261 XSync(dpy, False);
arg@333 262 setup();
garbeam@74 263 drawstatus();
garbeam@75 264 scan();
garbeam@3 265
arg@214 266 /* main event loop, also reads status text from stdin */
arg@242 267 XSync(dpy, False);
arg@292 268 procevent();
arg@302 269 readin = True;
garbeam@5 270 while(running) {
garbeam@59 271 FD_ZERO(&rd);
arg@164 272 if(readin)
arg@164 273 FD_SET(STDIN_FILENO, &rd);
arg@265 274 FD_SET(xfd, &rd);
arg@578 275 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
arg@578 276 if(errno == EINTR)
arg@578 277 continue;
arg@581 278 eprint("select failed\n");
arg@578 279 }
arg@578 280 if(FD_ISSET(STDIN_FILENO, &rd)) {
arg@581 281 switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
arg@578 282 case -1:
arg@581 283 strncpy(stext, strerror(errno), sizeof stext - 1);
arg@583 284 stext[sizeof stext - 1] = '\0';
arg@578 285 readin = False;
arg@578 286 break;
arg@578 287 case 0:
arg@583 288 strncpy(stext, "EOF", 4);
arg@578 289 readin = False;
arg@578 290 break;
arg@578 291 default:
arg@582 292 for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
arg@582 293 for(p = stext + strlen(stext) - 1; p >= stext && *p != '\n'; --p);
arg@581 294 if(p > stext)
arg@581 295 strncpy(stext, p + 1, sizeof stext);
garbeam@59 296 }
arg@578 297 drawstatus();
garbeam@59 298 }
arg@578 299 if(FD_ISSET(xfd, &rd))
arg@578 300 procevent();
garbeam@5 301 }
garbeam@0 302 cleanup();
garbeam@0 303 XCloseDisplay(dpy);
garbeam@0 304 return 0;
garbeam@0 305 }