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annotate main.c @ 162:a6a31e485fbd

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dwm is now exit, if stdin is closed due broken pipe
author arg@10ksloc.org
date Wed, 02 Aug 2006 12:33:24 +0200
parents 93012e947eae
children 21071ae1fe68
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@76 7
garbeam@59 8 #include <errno.h>
garbeam@0 9 #include <stdio.h>
garbeam@0 10 #include <stdlib.h>
garbeam@57 11 #include <string.h>
garbeam@59 12 #include <unistd.h>
arg@138 13 #include <sys/select.h>
garbeam@0 14 #include <X11/cursorfont.h>
garbeam@0 15 #include <X11/Xatom.h>
garbeam@0 16 #include <X11/Xproto.h>
garbeam@0 17
garbeam@3 18
garbeam@84 19 /* static */
garbeam@0 20
arg@123 21 static int (*xerrorxlib)(Display *, XErrorEvent *);
garbeam@75 22 static Bool otherwm;
garbeam@0 23
garbeam@0 24 static void
garbeam@76 25 cleanup()
garbeam@76 26 {
garbeam@76 27 while(sel) {
arg@99 28 resize(sel, True, TopLeft);
garbeam@76 29 unmanage(sel);
garbeam@76 30 }
garbeam@76 31 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
garbeam@76 32 }
garbeam@0 33
garbeam@0 34 static void
garbeam@75 35 scan()
garbeam@0 36 {
garbeam@0 37 unsigned int i, num;
arg@123 38 Window *wins, d1, d2;
garbeam@0 39 XWindowAttributes wa;
garbeam@0 40
garbeam@0 41 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
garbeam@0 42 for(i = 0; i < num; i++) {
garbeam@0 43 if(!XGetWindowAttributes(dpy, wins[i], &wa))
garbeam@0 44 continue;
garbeam@0 45 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
garbeam@0 46 continue;
garbeam@0 47 if(wa.map_state == IsViewable)
garbeam@10 48 manage(wins[i], &wa);
garbeam@0 49 }
garbeam@0 50 }
garbeam@0 51 if(wins)
garbeam@0 52 XFree(wins);
garbeam@0 53 }
garbeam@0 54
garbeam@13 55 static int
garbeam@13 56 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
garbeam@13 57 {
arg@123 58 int status, format;
arg@123 59 unsigned long res, extra;
garbeam@13 60 Atom real;
garbeam@13 61
garbeam@13 62 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
garbeam@13 63 &res, &extra, prop);
garbeam@13 64
garbeam@13 65 if(status != Success || *prop == 0) {
garbeam@13 66 return 0;
garbeam@13 67 }
garbeam@13 68 if(res == 0) {
garbeam@13 69 free((void *) *prop);
garbeam@13 70 }
garbeam@13 71 return res;
garbeam@13 72 }
garbeam@13 73
garbeam@76 74 /*
garbeam@76 75 * Startup Error handler to check if another window manager
garbeam@76 76 * is already running.
garbeam@76 77 */
garbeam@76 78 static int
garbeam@76 79 xerrorstart(Display *dsply, XErrorEvent *ee)
garbeam@76 80 {
garbeam@76 81 otherwm = True;
garbeam@76 82 return -1;
garbeam@76 83 }
garbeam@76 84
garbeam@84 85 /* extern */
garbeam@84 86
garbeam@84 87 char stext[1024];
arg@146 88 int tsel = DEFTAG;
garbeam@84 89 int screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
garbeam@84 90 Atom wmatom[WMLast], netatom[NetLast];
garbeam@84 91 Bool running = True;
garbeam@84 92 Bool issel = True;
garbeam@84 93 Client *clients = NULL;
garbeam@84 94 Client *sel = NULL;
garbeam@84 95 Cursor cursor[CurLast];
garbeam@84 96 Display *dpy;
garbeam@84 97 DC dc = {0};
garbeam@84 98 Window root, barwin;
garbeam@76 99
garbeam@13 100 int
garbeam@75 101 getproto(Window w)
garbeam@13 102 {
garbeam@13 103 int protos = 0;
garbeam@13 104 int i;
arg@123 105 long res;
arg@123 106 unsigned char *protocols;
garbeam@13 107
garbeam@77 108 res = win_property(w, wmatom[WMProtocols], XA_ATOM, 20L, &protocols);
garbeam@13 109 if(res <= 0) {
garbeam@13 110 return protos;
garbeam@13 111 }
garbeam@13 112 for(i = 0; i < res; i++) {
garbeam@77 113 if(protocols[i] == wmatom[WMDelete])
arg@157 114 protos |= PROTODELWIN;
garbeam@13 115 }
garbeam@13 116 free((char *) protocols);
garbeam@13 117 return protos;
garbeam@13 118 }
garbeam@13 119
garbeam@13 120 void
garbeam@74 121 sendevent(Window w, Atom a, long value)
garbeam@13 122 {
garbeam@13 123 XEvent e;
garbeam@13 124
garbeam@13 125 e.type = ClientMessage;
garbeam@13 126 e.xclient.window = w;
garbeam@13 127 e.xclient.message_type = a;
garbeam@13 128 e.xclient.format = 32;
garbeam@13 129 e.xclient.data.l[0] = value;
garbeam@13 130 e.xclient.data.l[1] = CurrentTime;
garbeam@13 131 XSendEvent(dpy, w, False, NoEventMask, &e);
garbeam@79 132 XSync(dpy, False);
garbeam@13 133 }
garbeam@13 134
garbeam@76 135 void
garbeam@76 136 quit(Arg *arg)
garbeam@75 137 {
garbeam@76 138 running = False;
garbeam@75 139 }
garbeam@75 140
garbeam@75 141 /*
garbeam@84 142 * There's no way to check accesses to destroyed windows, thus those cases are
garbeam@84 143 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
garbeam@84 144 * default error handler, which calls exit().
garbeam@0 145 */
garbeam@10 146 int
garbeam@75 147 xerror(Display *dpy, XErrorEvent *ee)
garbeam@0 148 {
garbeam@75 149 if(ee->error_code == BadWindow
arg@123 150 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
arg@123 151 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
arg@123 152 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
arg@123 153 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
arg@123 154 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
arg@123 155 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess))
garbeam@0 156 return 0;
garbeam@34 157 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
arg@123 158 ee->request_code, ee->error_code);
garbeam@75 159 return xerrorxlib(dpy, ee); /* may call exit() */
garbeam@27 160 }
garbeam@27 161
garbeam@0 162 int
garbeam@0 163 main(int argc, char *argv[])
garbeam@0 164 {
arg@138 165 int i;
arg@123 166 unsigned int mask;
garbeam@59 167 fd_set rd;
garbeam@0 168 Window w;
garbeam@5 169 XEvent ev;
arg@123 170 XSetWindowAttributes wa;
garbeam@0 171
arg@137 172 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
arg@137 173 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
arg@137 174 exit(EXIT_SUCCESS);
garbeam@0 175 }
arg@137 176 else if(argc != 1)
arg@137 177 eprint("usage: dwm [-v]\n");
garbeam@0 178
garbeam@0 179 dpy = XOpenDisplay(0);
garbeam@0 180 if(!dpy)
garbeam@75 181 eprint("dwm: cannot connect X server\n");
garbeam@0 182
garbeam@0 183 screen = DefaultScreen(dpy);
garbeam@0 184 root = RootWindow(dpy, screen);
garbeam@0 185
garbeam@0 186 /* check if another WM is already running */
garbeam@75 187 otherwm = False;
garbeam@75 188 XSetErrorHandler(xerrorstart);
garbeam@0 189 /* this causes an error if some other WM is running */
garbeam@0 190 XSelectInput(dpy, root, SubstructureRedirectMask);
garbeam@78 191 XSync(dpy, False);
garbeam@0 192
garbeam@75 193 if(otherwm)
garbeam@75 194 eprint("dwm: another window manager is already running\n");
garbeam@0 195
garbeam@78 196 XSetErrorHandler(NULL);
garbeam@75 197 xerrorxlib = XSetErrorHandler(xerror);
garbeam@0 198
garbeam@0 199 /* init atoms */
garbeam@77 200 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
garbeam@77 201 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
garbeam@77 202 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
garbeam@77 203 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
garbeam@77 204 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
garbeam@77 205 PropModeReplace, (unsigned char *) netatom, NetLast);
garbeam@0 206
garbeam@0 207 /* init cursors */
garbeam@0 208 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
garbeam@0 209 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
garbeam@0 210 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
garbeam@0 211
garbeam@73 212 grabkeys();
garbeam@0 213
garbeam@5 214 /* style */
garbeam@74 215 dc.bg = getcolor(BGCOLOR);
garbeam@74 216 dc.fg = getcolor(FGCOLOR);
garbeam@74 217 dc.border = getcolor(BORDERCOLOR);
garbeam@74 218 setfont(FONT);
garbeam@5 219
garbeam@57 220 sx = sy = 0;
garbeam@57 221 sw = DisplayWidth(dpy, screen);
garbeam@57 222 sh = DisplayHeight(dpy, screen);
garbeam@57 223 mw = (sw * MASTERW) / 100;
garbeam@5 224
garbeam@57 225 wa.override_redirect = 1;
garbeam@57 226 wa.background_pixmap = ParentRelative;
garbeam@58 227 wa.event_mask = ButtonPressMask | ExposureMask;
garbeam@57 228
garbeam@57 229 bx = by = 0;
garbeam@57 230 bw = sw;
garbeam@57 231 dc.h = bh = dc.font.height + 4;
garbeam@57 232 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
garbeam@57 233 CopyFromParent, DefaultVisual(dpy, screen),
garbeam@57 234 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
garbeam@57 235 XDefineCursor(dpy, barwin, cursor[CurNormal]);
garbeam@57 236 XMapRaised(dpy, barwin);
garbeam@57 237
garbeam@60 238 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
garbeam@60 239 dc.gc = XCreateGC(dpy, root, 0, 0);
garbeam@74 240 drawstatus();
garbeam@60 241
garbeam@57 242 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
garbeam@21 243
arg@123 244 wa.event_mask = SubstructureRedirectMask | EnterWindowMask | LeaveWindowMask;
garbeam@0 245 wa.cursor = cursor[CurNormal];
garbeam@0 246 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
garbeam@0 247
garbeam@57 248 strcpy(stext, "dwm-"VERSION);
garbeam@75 249 scan();
garbeam@3 250
garbeam@59 251 /* main event loop, reads status text from stdin as well */
garbeam@5 252 while(running) {
garbeam@59 253 FD_ZERO(&rd);
arg@162 254 FD_SET(STDIN_FILENO, &rd);
garbeam@59 255 FD_SET(ConnectionNumber(dpy), &rd);
garbeam@59 256
garbeam@59 257 i = select(ConnectionNumber(dpy) + 1, &rd, 0, 0, 0);
garbeam@59 258 if(i == -1 && errno == EINTR)
garbeam@59 259 continue;
garbeam@59 260 if(i < 0)
garbeam@75 261 eprint("select failed\n");
garbeam@59 262 else if(i > 0) {
garbeam@64 263 if(FD_ISSET(ConnectionNumber(dpy), &rd)) {
garbeam@64 264 while(XPending(dpy)) {
garbeam@64 265 XNextEvent(dpy, &ev);
garbeam@64 266 if(handler[ev.type])
garbeam@64 267 (handler[ev.type])(&ev); /* call handler */
garbeam@64 268 }
garbeam@59 269 }
arg@162 270 if(FD_ISSET(STDIN_FILENO, &rd)) {
arg@162 271 if(!fgets(stext, sizeof(stext), stdin))
arg@162 272 break;
arg@162 273 else
arg@137 274 stext[strlen(stext) - 1] = 0;
garbeam@74 275 drawstatus();
garbeam@59 276 }
garbeam@59 277 }
garbeam@5 278 }
garbeam@0 279
garbeam@0 280 cleanup();
garbeam@0 281 XCloseDisplay(dpy);
garbeam@0 282
garbeam@0 283 return 0;
garbeam@0 284 }