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annotate main.c @ 338:06438e022f9a

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eliminated sentinel warning
author Anselm R. Garbe <arg@10kloc.org>
date Wed, 23 Aug 2006 12:28:39 +0200
parents cea0c98495bc
children 5c874c619287
rev   line source
garbeam@0 1 /*
garbeam@0 2 * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
garbeam@0 3 * See LICENSE file for license details.
garbeam@0 4 */
garbeam@0 5
garbeam@76 6 #include "dwm.h"
garbeam@59 7 #include <errno.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@333 22 int screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
arg@333 23 unsigned int 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@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
garbeam@76 40 cleanup()
garbeam@76 41 {
arg@302 42 close(STDIN_FILENO);
garbeam@76 43 while(sel) {
arg@99 44 resize(sel, True, TopLeft);
garbeam@76 45 unmanage(sel);
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);
garbeam@76 55 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
arg@292 56 XSync(dpy, False);
garbeam@76 57 }
garbeam@0 58
garbeam@0 59 static void
garbeam@75 60 scan()
garbeam@0 61 {
garbeam@0 62 unsigned int i, num;
arg@123 63 Window *wins, d1, d2;
garbeam@0 64 XWindowAttributes wa;
garbeam@0 65
arg@292 66 wins = NULL;
garbeam@0 67 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
garbeam@0 68 for(i = 0; i < num; i++) {
garbeam@0 69 if(!XGetWindowAttributes(dpy, wins[i], &wa))
garbeam@0 70 continue;
garbeam@0 71 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
garbeam@0 72 continue;
garbeam@0 73 if(wa.map_state == IsViewable)
garbeam@10 74 manage(wins[i], &wa);
garbeam@0 75 }
garbeam@0 76 }
garbeam@0 77 if(wins)
garbeam@0 78 XFree(wins);
garbeam@0 79 }
garbeam@0 80
arg@333 81 static void
arg@333 82 setup()
arg@333 83 {
arg@333 84 int i, j;
arg@333 85 unsigned int mask;
arg@333 86 Window w;
arg@333 87 XModifierKeymap *modmap;
arg@333 88 XSetWindowAttributes wa;
arg@333 89
arg@333 90 /* init atoms */
arg@333 91 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
arg@333 92 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
arg@333 93 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
arg@333 94 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
arg@333 95 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
arg@333 96 PropModeReplace, (unsigned char *) netatom, NetLast);
arg@333 97
arg@333 98 /* init cursors */
arg@333 99 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
arg@333 100 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
arg@333 101 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
arg@333 102
arg@333 103 modmap = XGetModifierMapping(dpy);
arg@333 104 for (i = 0; i < 8; i++) {
arg@333 105 for (j = 0; j < modmap->max_keypermod; j++) {
arg@333 106 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
arg@333 107 numlockmask = (1 << i);
arg@333 108 }
arg@333 109 }
arg@333 110 XFree(modmap);
arg@333 111
arg@333 112 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask | EnterWindowMask | LeaveWindowMask;
arg@333 113 wa.cursor = cursor[CurNormal];
arg@333 114 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
arg@333 115
arg@333 116 grabkeys();
arg@333 117 initrregs();
arg@333 118
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
arg@333 123 /* style */
arg@333 124 dc.bg = getcolor(BGCOLOR);
arg@333 125 dc.fg = getcolor(FGCOLOR);
arg@333 126 dc.border = getcolor(BORDERCOLOR);
arg@333 127 setfont(FONT);
arg@333 128
arg@333 129 sx = sy = 0;
arg@333 130 sw = DisplayWidth(dpy, screen);
arg@333 131 sh = DisplayHeight(dpy, screen);
arg@333 132 mw = (sw * MASTERW) / 100;
arg@333 133
arg@333 134 bx = by = 0;
arg@333 135 bw = sw;
arg@333 136 dc.h = bh = dc.font.height + 4;
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@333 145
arg@333 146 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
arg@333 147 dc.gc = XCreateGC(dpy, root, 0, 0);
arg@333 148
arg@333 149 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
arg@333 150
arg@333 151 strcpy(stext, "dwm-"VERSION);
arg@333 152 }
arg@333 153
garbeam@76 154 /*
garbeam@76 155 * Startup Error handler to check if another window manager
garbeam@76 156 * is already running.
garbeam@76 157 */
garbeam@76 158 static int
garbeam@76 159 xerrorstart(Display *dsply, XErrorEvent *ee)
garbeam@76 160 {
garbeam@76 161 otherwm = True;
garbeam@76 162 return -1;
garbeam@76 163 }
garbeam@76 164
garbeam@84 165 /* extern */
garbeam@84 166
garbeam@13 167 int
garbeam@75 168 getproto(Window w)
garbeam@13 169 {
arg@329 170 int i, format, protos, status;
arg@328 171 unsigned long extra, res;
arg@328 172 Atom *protocols, real;
garbeam@13 173
arg@329 174 protos = 0;
arg@329 175 status = XGetWindowProperty(dpy, w, wmatom[WMProtocols], 0L, 20L, False,
arg@329 176 XA_ATOM, &real, &format, &res, &extra, (unsigned char **)&protocols);
arg@328 177 if(status != Success || protocols == 0)
garbeam@13 178 return protos;
arg@329 179 for(i = 0; i < res; i++)
garbeam@77 180 if(protocols[i] == wmatom[WMDelete])
arg@157 181 protos |= PROTODELWIN;
arg@328 182 free(protocols);
garbeam@13 183 return protos;
garbeam@13 184 }
garbeam@13 185
garbeam@13 186 void
garbeam@74 187 sendevent(Window w, Atom a, long value)
garbeam@13 188 {
garbeam@13 189 XEvent e;
garbeam@13 190
garbeam@13 191 e.type = ClientMessage;
garbeam@13 192 e.xclient.window = w;
garbeam@13 193 e.xclient.message_type = a;
garbeam@13 194 e.xclient.format = 32;
garbeam@13 195 e.xclient.data.l[0] = value;
garbeam@13 196 e.xclient.data.l[1] = CurrentTime;
garbeam@13 197 XSendEvent(dpy, w, False, NoEventMask, &e);
garbeam@79 198 XSync(dpy, False);
garbeam@13 199 }
garbeam@13 200
garbeam@76 201 void
garbeam@76 202 quit(Arg *arg)
garbeam@75 203 {
arg@302 204 readin = running = False;
garbeam@75 205 }
garbeam@75 206
garbeam@75 207 /*
garbeam@84 208 * 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
garbeam@84 210 * default error handler, which calls exit().
garbeam@0 211 */
garbeam@10 212 int
garbeam@75 213 xerror(Display *dpy, XErrorEvent *ee)
garbeam@0 214 {
garbeam@75 215 if(ee->error_code == BadWindow
arg@123 216 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
arg@123 217 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
arg@123 218 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
arg@123 219 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
arg@123 220 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
arg@123 221 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess))
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);
garbeam@75 225 return xerrorxlib(dpy, ee); /* may call exit() */
garbeam@27 226 }
garbeam@27 227
garbeam@0 228 int
garbeam@0 229 main(int argc, char *argv[])
garbeam@0 230 {
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
garbeam@0 241 dpy = XOpenDisplay(0);
garbeam@0 242 if(!dpy)
arg@197 243 eprint("dwm: cannot open display\n");
garbeam@0 244
arg@265 245 xfd = ConnectionNumber(dpy);
garbeam@0 246 screen = DefaultScreen(dpy);
garbeam@0 247 root = RootWindow(dpy, screen);
garbeam@0 248
garbeam@75 249 otherwm = False;
garbeam@75 250 XSetErrorHandler(xerrorstart);
arg@197 251 /* this causes an error if some other window manager is running */
garbeam@0 252 XSelectInput(dpy, root, SubstructureRedirectMask);
garbeam@78 253 XSync(dpy, False);
garbeam@0 254
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);
garbeam@0 262
arg@333 263 setup();
garbeam@74 264 drawstatus();
garbeam@75 265 scan();
garbeam@3 266
arg@214 267 /* main event loop, also reads status text from stdin */
arg@242 268 XSync(dpy, False);
arg@292 269 procevent();
arg@302 270 readin = True;
garbeam@5 271 while(running) {
garbeam@59 272 FD_ZERO(&rd);
arg@164 273 if(readin)
arg@164 274 FD_SET(STDIN_FILENO, &rd);
arg@265 275 FD_SET(xfd, &rd);
arg@333 276 r = select(xfd + 1, &rd, NULL, NULL, NULL);
arg@333 277 if((r == -1) && (errno == EINTR))
garbeam@59 278 continue;
arg@333 279 if(r > 0) {
arg@164 280 if(readin && FD_ISSET(STDIN_FILENO, &rd)) {
arg@164 281 readin = NULL != fgets(stext, sizeof(stext), stdin);
arg@164 282 if(readin)
arg@164 283 stext[strlen(stext) - 1] = 0;
arg@162 284 else
arg@164 285 strcpy(stext, "broken pipe");
garbeam@74 286 drawstatus();
garbeam@59 287 }
garbeam@59 288 }
arg@333 289 else if(r < 0)
arg@316 290 eprint("select failed\n");
arg@293 291 procevent();
garbeam@5 292 }
garbeam@0 293 cleanup();
garbeam@0 294 XCloseDisplay(dpy);
garbeam@0 295
garbeam@0 296 return 0;
garbeam@0 297 }