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annotate main.c @ 75:f08271b7cb20

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rearranged several stuff
author Anselm R. Garbe <garbeam@wmii.de>
date Sat, 15 Jul 2006 16:30:50 +0200
parents 5370ef170cc9
children 4bd49f404f10
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@59 6 #include <errno.h>
garbeam@0 7 #include <stdarg.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>
garbeam@0 12
garbeam@0 13 #include <X11/cursorfont.h>
garbeam@0 14 #include <X11/Xatom.h>
garbeam@0 15 #include <X11/Xproto.h>
garbeam@0 16
garbeam@43 17 #include "dwm.h"
garbeam@0 18
garbeam@31 19 /********** CUSTOMIZE **********/
garbeam@31 20
garbeam@31 21 char *tags[TLast] = {
garbeam@31 22 [Tscratch] = "scratch",
garbeam@31 23 [Tdev] = "dev",
garbeam@31 24 [Twww] = "www",
garbeam@31 25 [Twork] = "work",
garbeam@31 26 };
garbeam@31 27
garbeam@31 28 /********** CUSTOMIZE **********/
garbeam@31 29
garbeam@3 30 /* X structs */
garbeam@0 31 Display *dpy;
garbeam@5 32 Window root, barwin;
garbeam@13 33 Atom wm_atom[WMLast], net_atom[NetLast];
garbeam@0 34 Cursor cursor[CurLast];
garbeam@5 35 Bool running = True;
garbeam@31 36 Bool issel;
garbeam@3 37
garbeam@31 38 int tsel = Tdev; /* default tag */
garbeam@57 39 int screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
garbeam@57 40 char stext[1024];
garbeam@3 41
garbeam@34 42 DC dc = {0};
garbeam@50 43 Client *clients = NULL;
garbeam@50 44 Client *sel = NULL;
garbeam@0 45
garbeam@75 46 static Bool otherwm;
garbeam@31 47 static const char version[] =
garbeam@57 48 "dwm-" VERSION ", (C)opyright MMVI Anselm R. Garbe\n";
garbeam@75 49 static int (*xerrorxlib)(Display *, XErrorEvent *);
garbeam@0 50
garbeam@0 51 static void
garbeam@75 52 usage() { eprint("usage: dwm [-v]\n"); }
garbeam@0 53
garbeam@0 54 static void
garbeam@75 55 scan()
garbeam@0 56 {
garbeam@0 57 unsigned int i, num;
garbeam@0 58 Window *wins;
garbeam@0 59 XWindowAttributes wa;
garbeam@0 60 Window d1, d2;
garbeam@0 61
garbeam@0 62 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
garbeam@0 63 for(i = 0; i < num; i++) {
garbeam@0 64 if(!XGetWindowAttributes(dpy, wins[i], &wa))
garbeam@0 65 continue;
garbeam@0 66 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
garbeam@0 67 continue;
garbeam@0 68 if(wa.map_state == IsViewable)
garbeam@10 69 manage(wins[i], &wa);
garbeam@0 70 }
garbeam@0 71 }
garbeam@0 72 if(wins)
garbeam@0 73 XFree(wins);
garbeam@0 74 }
garbeam@0 75
garbeam@75 76 static void
garbeam@75 77 cleanup()
garbeam@75 78 {
garbeam@75 79 while(sel) {
garbeam@75 80 resize(sel, True);
garbeam@75 81 unmanage(sel);
garbeam@75 82 }
garbeam@75 83 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
garbeam@75 84 }
garbeam@75 85
garbeam@75 86 void
garbeam@75 87 quit(Arg *arg)
garbeam@75 88 {
garbeam@75 89 running = False;
garbeam@75 90 }
garbeam@75 91
garbeam@13 92 static int
garbeam@13 93 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
garbeam@13 94 {
garbeam@13 95 Atom real;
garbeam@13 96 int format;
garbeam@13 97 unsigned long res, extra;
garbeam@13 98 int status;
garbeam@13 99
garbeam@13 100 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
garbeam@13 101 &res, &extra, prop);
garbeam@13 102
garbeam@13 103 if(status != Success || *prop == 0) {
garbeam@13 104 return 0;
garbeam@13 105 }
garbeam@13 106 if(res == 0) {
garbeam@13 107 free((void *) *prop);
garbeam@13 108 }
garbeam@13 109 return res;
garbeam@13 110 }
garbeam@13 111
garbeam@13 112 int
garbeam@75 113 getproto(Window w)
garbeam@13 114 {
garbeam@30 115 unsigned char *protocols;
garbeam@13 116 long res;
garbeam@13 117 int protos = 0;
garbeam@13 118 int i;
garbeam@13 119
garbeam@30 120 res = win_property(w, wm_atom[WMProtocols], XA_ATOM, 20L, &protocols);
garbeam@13 121 if(res <= 0) {
garbeam@13 122 return protos;
garbeam@13 123 }
garbeam@13 124 for(i = 0; i < res; i++) {
garbeam@13 125 if(protocols[i] == wm_atom[WMDelete])
garbeam@13 126 protos |= WM_PROTOCOL_DELWIN;
garbeam@13 127 }
garbeam@13 128 free((char *) protocols);
garbeam@13 129 return protos;
garbeam@13 130 }
garbeam@13 131
garbeam@13 132 void
garbeam@74 133 sendevent(Window w, Atom a, long value)
garbeam@13 134 {
garbeam@13 135 XEvent e;
garbeam@13 136
garbeam@13 137 e.type = ClientMessage;
garbeam@13 138 e.xclient.window = w;
garbeam@13 139 e.xclient.message_type = a;
garbeam@13 140 e.xclient.format = 32;
garbeam@13 141 e.xclient.data.l[0] = value;
garbeam@13 142 e.xclient.data.l[1] = CurrentTime;
garbeam@13 143 XSendEvent(dpy, w, False, NoEventMask, &e);
garbeam@13 144 XFlush(dpy);
garbeam@13 145 }
garbeam@13 146
garbeam@0 147 /*
garbeam@75 148 * Startup Error handler to check if another window manager
garbeam@75 149 * is already running.
garbeam@75 150 */
garbeam@75 151 static int
garbeam@75 152 xerrorstart(Display *dsply, XErrorEvent *ee)
garbeam@75 153 {
garbeam@75 154 otherwm = True;
garbeam@75 155 return -1;
garbeam@75 156 }
garbeam@75 157
garbeam@75 158 /*
garbeam@0 159 * There's no way to check accesses to destroyed windows, thus
garbeam@0 160 * those cases are ignored (especially on UnmapNotify's).
garbeam@0 161 * Other types of errors call Xlib's default error handler, which
garbeam@0 162 * calls exit().
garbeam@0 163 */
garbeam@10 164 int
garbeam@75 165 xerror(Display *dpy, XErrorEvent *ee)
garbeam@0 166 {
garbeam@75 167 if(ee->error_code == BadWindow
garbeam@75 168 || (ee->request_code == X_SetInputFocus
garbeam@75 169 && ee->error_code == BadMatch)
garbeam@75 170 || (ee->request_code == X_PolyText8
garbeam@75 171 && ee->error_code == BadDrawable)
garbeam@75 172 || (ee->request_code == X_PolyFillRectangle
garbeam@75 173 && ee->error_code == BadDrawable)
garbeam@75 174 || (ee->request_code == X_PolySegment
garbeam@75 175 && ee->error_code == BadDrawable)
garbeam@75 176 || (ee->request_code == X_ConfigureWindow
garbeam@75 177 && ee->error_code == BadMatch)
garbeam@75 178 || (ee->request_code == X_GrabKey
garbeam@75 179 && ee->error_code == BadAccess))
garbeam@0 180 return 0;
garbeam@34 181 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
garbeam@75 182 ee->request_code, ee->error_code);
garbeam@75 183 return xerrorxlib(dpy, ee); /* may call exit() */
garbeam@27 184 }
garbeam@27 185
garbeam@0 186 int
garbeam@0 187 main(int argc, char *argv[])
garbeam@0 188 {
garbeam@59 189 int i, n;
garbeam@59 190 fd_set rd;
garbeam@0 191 XSetWindowAttributes wa;
garbeam@0 192 unsigned int mask;
garbeam@65 193 Bool readstdin = True;
garbeam@0 194 Window w;
garbeam@5 195 XEvent ev;
garbeam@0 196
garbeam@0 197 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
garbeam@0 198 switch (argv[i][1]) {
garbeam@0 199 case 'v':
garbeam@0 200 fprintf(stdout, "%s", version);
garbeam@0 201 exit(0);
garbeam@0 202 break;
garbeam@0 203 default:
garbeam@0 204 usage();
garbeam@0 205 break;
garbeam@0 206 }
garbeam@0 207 }
garbeam@0 208
garbeam@0 209 dpy = XOpenDisplay(0);
garbeam@0 210 if(!dpy)
garbeam@75 211 eprint("dwm: cannot connect X server\n");
garbeam@0 212
garbeam@0 213 screen = DefaultScreen(dpy);
garbeam@0 214 root = RootWindow(dpy, screen);
garbeam@0 215
garbeam@0 216 /* check if another WM is already running */
garbeam@75 217 otherwm = False;
garbeam@75 218 XSetErrorHandler(xerrorstart);
garbeam@0 219 /* this causes an error if some other WM is running */
garbeam@0 220 XSelectInput(dpy, root, SubstructureRedirectMask);
garbeam@3 221 XFlush(dpy);
garbeam@0 222
garbeam@75 223 if(otherwm)
garbeam@75 224 eprint("dwm: another window manager is already running\n");
garbeam@0 225
garbeam@0 226 XSetErrorHandler(0);
garbeam@75 227 xerrorxlib = XSetErrorHandler(xerror);
garbeam@0 228
garbeam@0 229 /* init atoms */
garbeam@13 230 wm_atom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
garbeam@13 231 wm_atom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
garbeam@0 232 net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
garbeam@0 233 net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
garbeam@0 234 XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32,
garbeam@0 235 PropModeReplace, (unsigned char *) net_atom, NetLast);
garbeam@0 236
garbeam@0 237 /* init cursors */
garbeam@0 238 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
garbeam@0 239 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
garbeam@0 240 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
garbeam@0 241
garbeam@73 242 grabkeys();
garbeam@0 243
garbeam@5 244 /* style */
garbeam@74 245 dc.bg = getcolor(BGCOLOR);
garbeam@74 246 dc.fg = getcolor(FGCOLOR);
garbeam@74 247 dc.border = getcolor(BORDERCOLOR);
garbeam@74 248 setfont(FONT);
garbeam@5 249
garbeam@57 250 sx = sy = 0;
garbeam@57 251 sw = DisplayWidth(dpy, screen);
garbeam@57 252 sh = DisplayHeight(dpy, screen);
garbeam@57 253 mw = (sw * MASTERW) / 100;
garbeam@5 254
garbeam@57 255 wa.override_redirect = 1;
garbeam@57 256 wa.background_pixmap = ParentRelative;
garbeam@58 257 wa.event_mask = ButtonPressMask | ExposureMask;
garbeam@57 258
garbeam@57 259 bx = by = 0;
garbeam@57 260 bw = sw;
garbeam@57 261 dc.h = bh = dc.font.height + 4;
garbeam@57 262 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
garbeam@57 263 CopyFromParent, DefaultVisual(dpy, screen),
garbeam@57 264 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
garbeam@57 265 XDefineCursor(dpy, barwin, cursor[CurNormal]);
garbeam@57 266 XMapRaised(dpy, barwin);
garbeam@57 267
garbeam@60 268 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
garbeam@60 269 dc.gc = XCreateGC(dpy, root, 0, 0);
garbeam@74 270 drawstatus();
garbeam@60 271
garbeam@57 272 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
garbeam@21 273
garbeam@9 274 wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
garbeam@9 275 | LeaveWindowMask;
garbeam@0 276 wa.cursor = cursor[CurNormal];
garbeam@57 277
garbeam@0 278 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
garbeam@0 279
garbeam@57 280 strcpy(stext, "dwm-"VERSION);
garbeam@75 281 scan();
garbeam@3 282
garbeam@59 283 /* main event loop, reads status text from stdin as well */
garbeam@61 284 Mainloop:
garbeam@5 285 while(running) {
garbeam@59 286 FD_ZERO(&rd);
garbeam@65 287 if(readstdin)
garbeam@65 288 FD_SET(STDIN_FILENO, &rd);
garbeam@59 289 FD_SET(ConnectionNumber(dpy), &rd);
garbeam@59 290
garbeam@59 291 i = select(ConnectionNumber(dpy) + 1, &rd, 0, 0, 0);
garbeam@59 292 if(i == -1 && errno == EINTR)
garbeam@59 293 continue;
garbeam@59 294 if(i < 0)
garbeam@75 295 eprint("select failed\n");
garbeam@59 296 else if(i > 0) {
garbeam@64 297 if(FD_ISSET(ConnectionNumber(dpy), &rd)) {
garbeam@64 298 while(XPending(dpy)) {
garbeam@64 299 XNextEvent(dpy, &ev);
garbeam@64 300 if(handler[ev.type])
garbeam@64 301 (handler[ev.type])(&ev); /* call handler */
garbeam@64 302 }
garbeam@59 303 }
garbeam@65 304 if(readstdin && FD_ISSET(STDIN_FILENO, &rd)) {
garbeam@59 305 i = n = 0;
garbeam@60 306 for(;;) {
garbeam@60 307 if((i = getchar()) == EOF) {
garbeam@65 308 /* broken pipe/end of producer */
garbeam@65 309 readstdin = False;
garbeam@65 310 strcpy(stext, "broken pipe");
garbeam@60 311 goto Mainloop;
garbeam@60 312 }
garbeam@60 313 if(i == '\n' || n >= sizeof(stext) - 1)
garbeam@60 314 break;
garbeam@59 315 stext[n++] = i;
garbeam@60 316 }
garbeam@59 317 stext[n] = 0;
garbeam@74 318 drawstatus();
garbeam@59 319 }
garbeam@59 320 }
garbeam@5 321 }
garbeam@0 322
garbeam@0 323 cleanup();
garbeam@0 324 XCloseDisplay(dpy);
garbeam@0 325
garbeam@0 326 return 0;
garbeam@0 327 }