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annotate main.c @ 734:6283adb1fcf2

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replaced getproto with a saner function, now old-school artifacts of WM times in the early 90s completely disappeared, no punned pointer warning anymore ;)
author Anselm R. Garbe <arg@suckless.org>
date Wed, 07 Feb 2007 12:37:06 +0100
parents d99be681d502
children f05da68014bd
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@716 26 Bool selscreen = 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@725 95 wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
arg@333 96 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
arg@333 97 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
arg@333 98 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
arg@333 99 PropModeReplace, (unsigned char *) netatom, NetLast);
arg@333 100 /* init cursors */
arg@333 101 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
arg@333 102 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
arg@333 103 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
arg@532 104 /* init modifier map */
arg@679 105 numlockmask = 0;
arg@333 106 modmap = XGetModifierMapping(dpy);
arg@333 107 for (i = 0; i < 8; i++) {
arg@333 108 for (j = 0; j < modmap->max_keypermod; j++) {
arg@333 109 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
arg@333 110 numlockmask = (1 << i);
arg@333 111 }
arg@333 112 }
arg@616 113 XFreeModifiermap(modmap);
arg@532 114 /* select for events */
arg@461 115 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
arg@461 116 | EnterWindowMask | LeaveWindowMask;
arg@333 117 wa.cursor = cursor[CurNormal];
arg@333 118 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
arg@333 119 grabkeys();
arg@333 120 initrregs();
arg@333 121 for(ntags = 0; tags[ntags]; ntags++);
arg@333 122 seltag = emallocz(sizeof(Bool) * ntags);
arg@333 123 seltag[0] = True;
arg@333 124 /* style */
arg@689 125 dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
arg@353 126 dc.norm[ColBG] = getcolor(NORMBGCOLOR);
arg@353 127 dc.norm[ColFG] = getcolor(NORMFGCOLOR);
arg@689 128 dc.sel[ColBorder] = getcolor(SELBORDERCOLOR);
arg@353 129 dc.sel[ColBG] = getcolor(SELBGCOLOR);
arg@353 130 dc.sel[ColFG] = getcolor(SELFGCOLOR);
arg@333 131 setfont(FONT);
arg@532 132 /* geometry */
arg@333 133 sx = sy = 0;
arg@333 134 sw = DisplayWidth(dpy, screen);
arg@333 135 sh = DisplayHeight(dpy, screen);
arg@524 136 master = MASTER;
arg@650 137 nmaster = NMASTER;
arg@688 138 bmw = textw(TILESYMBOL) > textw(FLOATSYMBOL) ? textw(TILESYMBOL) : textw(FLOATSYMBOL);
arg@532 139 /* bar */
arg@353 140 dc.h = bh = dc.font.height + 2;
arg@333 141 wa.override_redirect = 1;
arg@333 142 wa.background_pixmap = ParentRelative;
arg@333 143 wa.event_mask = ButtonPressMask | ExposureMask;
arg@697 144 barwin = XCreateWindow(dpy, root, sx, sy, sw, bh, 0, DefaultDepth(dpy, screen),
arg@333 145 CopyFromParent, DefaultVisual(dpy, screen),
arg@333 146 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
arg@333 147 XDefineCursor(dpy, barwin, cursor[CurNormal]);
arg@333 148 XMapRaised(dpy, barwin);
arg@532 149 strcpy(stext, "dwm-"VERSION);
arg@565 150 /* windowarea */
arg@565 151 wax = sx;
arg@570 152 way = sy + bh;
arg@565 153 wah = sh - bh;
arg@565 154 waw = sw;
arg@532 155 /* pixmap for everything */
arg@333 156 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
arg@333 157 dc.gc = XCreateGC(dpy, root, 0, 0);
arg@344 158 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
arg@532 159 /* multihead support */
arg@716 160 selscreen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
arg@333 161 }
arg@333 162
garbeam@76 163 /*
garbeam@76 164 * Startup Error handler to check if another window manager
garbeam@76 165 * is already running.
garbeam@76 166 */
garbeam@76 167 static int
arg@461 168 xerrorstart(Display *dsply, XErrorEvent *ee) {
garbeam@76 169 otherwm = True;
garbeam@76 170 return -1;
garbeam@76 171 }
garbeam@76 172
garbeam@84 173 /* extern */
garbeam@84 174
garbeam@13 175 void
arg@461 176 sendevent(Window w, Atom a, long value) {
garbeam@13 177 XEvent e;
garbeam@13 178
garbeam@13 179 e.type = ClientMessage;
garbeam@13 180 e.xclient.window = w;
garbeam@13 181 e.xclient.message_type = a;
garbeam@13 182 e.xclient.format = 32;
garbeam@13 183 e.xclient.data.l[0] = value;
garbeam@13 184 e.xclient.data.l[1] = CurrentTime;
garbeam@13 185 XSendEvent(dpy, w, False, NoEventMask, &e);
garbeam@79 186 XSync(dpy, False);
garbeam@13 187 }
garbeam@13 188
garbeam@76 189 void
arg@461 190 quit(Arg *arg) {
arg@302 191 readin = running = False;
garbeam@75 192 }
garbeam@75 193
arg@532 194 /* There's no way to check accesses to destroyed windows, thus those cases are
garbeam@84 195 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
arg@455 196 * default error handler, which may call exit.
garbeam@0 197 */
garbeam@10 198 int
arg@461 199 xerror(Display *dpy, XErrorEvent *ee) {
garbeam@75 200 if(ee->error_code == BadWindow
arg@123 201 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
arg@123 202 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
arg@123 203 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
arg@123 204 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
arg@123 205 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
arg@458 206 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
arg@458 207 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
garbeam@0 208 return 0;
garbeam@34 209 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
arg@123 210 ee->request_code, ee->error_code);
arg@455 211 return xerrorxlib(dpy, ee); /* may call exit */
garbeam@27 212 }
garbeam@27 213
garbeam@0 214 int
arg@461 215 main(int argc, char *argv[]) {
arg@581 216 char *p;
arg@333 217 int r, xfd;
garbeam@59 218 fd_set rd;
garbeam@0 219
arg@137 220 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
arg@644 221 fputs("dwm-"VERSION", (C)opyright MMVI-MMVII Anselm R. Garbe\n", stdout);
arg@137 222 exit(EXIT_SUCCESS);
garbeam@0 223 }
arg@137 224 else if(argc != 1)
arg@137 225 eprint("usage: dwm [-v]\n");
arg@619 226 setlocale(LC_CTYPE, "");
garbeam@0 227 dpy = XOpenDisplay(0);
garbeam@0 228 if(!dpy)
arg@197 229 eprint("dwm: cannot open display\n");
arg@265 230 xfd = ConnectionNumber(dpy);
garbeam@0 231 screen = DefaultScreen(dpy);
garbeam@0 232 root = RootWindow(dpy, screen);
garbeam@75 233 otherwm = False;
garbeam@75 234 XSetErrorHandler(xerrorstart);
arg@197 235 /* this causes an error if some other window manager is running */
garbeam@0 236 XSelectInput(dpy, root, SubstructureRedirectMask);
garbeam@78 237 XSync(dpy, False);
garbeam@75 238 if(otherwm)
garbeam@75 239 eprint("dwm: another window manager is already running\n");
garbeam@0 240
arg@292 241 XSync(dpy, False);
garbeam@78 242 XSetErrorHandler(NULL);
garbeam@75 243 xerrorxlib = XSetErrorHandler(xerror);
arg@275 244 XSync(dpy, False);
arg@333 245 setup();
garbeam@74 246 drawstatus();
garbeam@75 247 scan();
garbeam@3 248
arg@214 249 /* main event loop, also reads status text from stdin */
arg@242 250 XSync(dpy, False);
arg@292 251 procevent();
arg@302 252 readin = True;
garbeam@5 253 while(running) {
garbeam@59 254 FD_ZERO(&rd);
arg@164 255 if(readin)
arg@164 256 FD_SET(STDIN_FILENO, &rd);
arg@265 257 FD_SET(xfd, &rd);
arg@578 258 if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
arg@578 259 if(errno == EINTR)
arg@578 260 continue;
arg@581 261 eprint("select failed\n");
arg@578 262 }
arg@578 263 if(FD_ISSET(STDIN_FILENO, &rd)) {
arg@581 264 switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
arg@578 265 case -1:
arg@581 266 strncpy(stext, strerror(errno), sizeof stext - 1);
arg@583 267 stext[sizeof stext - 1] = '\0';
arg@578 268 readin = False;
arg@578 269 break;
arg@578 270 case 0:
arg@583 271 strncpy(stext, "EOF", 4);
arg@578 272 readin = False;
arg@578 273 break;
arg@578 274 default:
arg@582 275 for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
arg@582 276 for(p = stext + strlen(stext) - 1; p >= stext && *p != '\n'; --p);
arg@581 277 if(p > stext)
arg@581 278 strncpy(stext, p + 1, sizeof stext);
garbeam@59 279 }
arg@578 280 drawstatus();
garbeam@59 281 }
arg@578 282 if(FD_ISSET(xfd, &rd))
arg@578 283 procevent();
garbeam@5 284 }
garbeam@0 285 cleanup();
garbeam@0 286 XCloseDisplay(dpy);
garbeam@0 287 return 0;
garbeam@0 288 }