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annotate main.c @ 76:4bd49f404f10

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author Anselm R. Garbe <garbeam@wmii.de>
date Sat, 15 Jul 2006 17:00:56 +0200
parents f08271b7cb20
children 38c8f7f7d401
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>
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@0 17 Display *dpy;
garbeam@5 18 Window root, barwin;
garbeam@13 19 Atom wm_atom[WMLast], net_atom[NetLast];
garbeam@0 20 Cursor cursor[CurLast];
garbeam@5 21 Bool running = True;
garbeam@31 22 Bool issel;
garbeam@3 23
garbeam@31 24 int tsel = Tdev; /* default tag */
garbeam@57 25 int screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
garbeam@57 26 char stext[1024];
garbeam@3 27
garbeam@34 28 DC dc = {0};
garbeam@50 29 Client *clients = NULL;
garbeam@50 30 Client *sel = NULL;
garbeam@0 31
garbeam@75 32 static Bool otherwm;
garbeam@31 33 static const char version[] =
garbeam@57 34 "dwm-" VERSION ", (C)opyright MMVI Anselm R. Garbe\n";
garbeam@75 35 static int (*xerrorxlib)(Display *, XErrorEvent *);
garbeam@0 36
garbeam@76 37 /* static functions */
garbeam@76 38
garbeam@0 39 static void
garbeam@76 40 cleanup()
garbeam@76 41 {
garbeam@76 42 while(sel) {
garbeam@76 43 resize(sel, True);
garbeam@76 44 unmanage(sel);
garbeam@76 45 }
garbeam@76 46 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
garbeam@76 47 }
garbeam@0 48
garbeam@0 49 static void
garbeam@75 50 scan()
garbeam@0 51 {
garbeam@0 52 unsigned int i, num;
garbeam@0 53 Window *wins;
garbeam@0 54 XWindowAttributes wa;
garbeam@0 55 Window d1, d2;
garbeam@0 56
garbeam@0 57 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
garbeam@0 58 for(i = 0; i < num; i++) {
garbeam@0 59 if(!XGetWindowAttributes(dpy, wins[i], &wa))
garbeam@0 60 continue;
garbeam@0 61 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
garbeam@0 62 continue;
garbeam@0 63 if(wa.map_state == IsViewable)
garbeam@10 64 manage(wins[i], &wa);
garbeam@0 65 }
garbeam@0 66 }
garbeam@0 67 if(wins)
garbeam@0 68 XFree(wins);
garbeam@0 69 }
garbeam@0 70
garbeam@13 71 static int
garbeam@13 72 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
garbeam@13 73 {
garbeam@13 74 Atom real;
garbeam@13 75 int format;
garbeam@13 76 unsigned long res, extra;
garbeam@13 77 int status;
garbeam@13 78
garbeam@13 79 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
garbeam@13 80 &res, &extra, prop);
garbeam@13 81
garbeam@13 82 if(status != Success || *prop == 0) {
garbeam@13 83 return 0;
garbeam@13 84 }
garbeam@13 85 if(res == 0) {
garbeam@13 86 free((void *) *prop);
garbeam@13 87 }
garbeam@13 88 return res;
garbeam@13 89 }
garbeam@13 90
garbeam@76 91 /*
garbeam@76 92 * Startup Error handler to check if another window manager
garbeam@76 93 * is already running.
garbeam@76 94 */
garbeam@76 95 static int
garbeam@76 96 xerrorstart(Display *dsply, XErrorEvent *ee)
garbeam@76 97 {
garbeam@76 98 otherwm = True;
garbeam@76 99 return -1;
garbeam@76 100 }
garbeam@76 101
garbeam@76 102 /* extern functions */
garbeam@76 103
garbeam@13 104 int
garbeam@75 105 getproto(Window w)
garbeam@13 106 {
garbeam@30 107 unsigned char *protocols;
garbeam@13 108 long res;
garbeam@13 109 int protos = 0;
garbeam@13 110 int i;
garbeam@13 111
garbeam@30 112 res = win_property(w, wm_atom[WMProtocols], XA_ATOM, 20L, &protocols);
garbeam@13 113 if(res <= 0) {
garbeam@13 114 return protos;
garbeam@13 115 }
garbeam@13 116 for(i = 0; i < res; i++) {
garbeam@13 117 if(protocols[i] == wm_atom[WMDelete])
garbeam@13 118 protos |= WM_PROTOCOL_DELWIN;
garbeam@13 119 }
garbeam@13 120 free((char *) protocols);
garbeam@13 121 return protos;
garbeam@13 122 }
garbeam@13 123
garbeam@13 124 void
garbeam@74 125 sendevent(Window w, Atom a, long value)
garbeam@13 126 {
garbeam@13 127 XEvent e;
garbeam@13 128
garbeam@13 129 e.type = ClientMessage;
garbeam@13 130 e.xclient.window = w;
garbeam@13 131 e.xclient.message_type = a;
garbeam@13 132 e.xclient.format = 32;
garbeam@13 133 e.xclient.data.l[0] = value;
garbeam@13 134 e.xclient.data.l[1] = CurrentTime;
garbeam@13 135 XSendEvent(dpy, w, False, NoEventMask, &e);
garbeam@13 136 XFlush(dpy);
garbeam@13 137 }
garbeam@13 138
garbeam@76 139 void
garbeam@76 140 quit(Arg *arg)
garbeam@75 141 {
garbeam@76 142 running = False;
garbeam@75 143 }
garbeam@75 144
garbeam@75 145 /*
garbeam@0 146 * There's no way to check accesses to destroyed windows, thus
garbeam@0 147 * those cases are ignored (especially on UnmapNotify's).
garbeam@0 148 * Other types of errors call Xlib's default error handler, which
garbeam@0 149 * calls exit().
garbeam@0 150 */
garbeam@10 151 int
garbeam@75 152 xerror(Display *dpy, XErrorEvent *ee)
garbeam@0 153 {
garbeam@75 154 if(ee->error_code == BadWindow
garbeam@75 155 || (ee->request_code == X_SetInputFocus
garbeam@75 156 && ee->error_code == BadMatch)
garbeam@75 157 || (ee->request_code == X_PolyText8
garbeam@75 158 && ee->error_code == BadDrawable)
garbeam@75 159 || (ee->request_code == X_PolyFillRectangle
garbeam@75 160 && ee->error_code == BadDrawable)
garbeam@75 161 || (ee->request_code == X_PolySegment
garbeam@75 162 && ee->error_code == BadDrawable)
garbeam@75 163 || (ee->request_code == X_ConfigureWindow
garbeam@75 164 && ee->error_code == BadMatch)
garbeam@75 165 || (ee->request_code == X_GrabKey
garbeam@75 166 && ee->error_code == BadAccess))
garbeam@0 167 return 0;
garbeam@34 168 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
garbeam@75 169 ee->request_code, ee->error_code);
garbeam@75 170 return xerrorxlib(dpy, ee); /* may call exit() */
garbeam@27 171 }
garbeam@27 172
garbeam@0 173 int
garbeam@0 174 main(int argc, char *argv[])
garbeam@0 175 {
garbeam@59 176 int i, n;
garbeam@59 177 fd_set rd;
garbeam@0 178 XSetWindowAttributes wa;
garbeam@0 179 unsigned int mask;
garbeam@65 180 Bool readstdin = True;
garbeam@0 181 Window w;
garbeam@5 182 XEvent ev;
garbeam@0 183
garbeam@0 184 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
garbeam@0 185 switch (argv[i][1]) {
garbeam@0 186 case 'v':
garbeam@0 187 fprintf(stdout, "%s", version);
garbeam@0 188 exit(0);
garbeam@0 189 break;
garbeam@0 190 default:
garbeam@76 191 eprint("usage: dwm [-v]\n");
garbeam@0 192 break;
garbeam@0 193 }
garbeam@0 194 }
garbeam@0 195
garbeam@0 196 dpy = XOpenDisplay(0);
garbeam@0 197 if(!dpy)
garbeam@75 198 eprint("dwm: cannot connect X server\n");
garbeam@0 199
garbeam@0 200 screen = DefaultScreen(dpy);
garbeam@0 201 root = RootWindow(dpy, screen);
garbeam@0 202
garbeam@0 203 /* check if another WM is already running */
garbeam@75 204 otherwm = False;
garbeam@75 205 XSetErrorHandler(xerrorstart);
garbeam@0 206 /* this causes an error if some other WM is running */
garbeam@0 207 XSelectInput(dpy, root, SubstructureRedirectMask);
garbeam@3 208 XFlush(dpy);
garbeam@0 209
garbeam@75 210 if(otherwm)
garbeam@75 211 eprint("dwm: another window manager is already running\n");
garbeam@0 212
garbeam@0 213 XSetErrorHandler(0);
garbeam@75 214 xerrorxlib = XSetErrorHandler(xerror);
garbeam@0 215
garbeam@0 216 /* init atoms */
garbeam@13 217 wm_atom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
garbeam@13 218 wm_atom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
garbeam@0 219 net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
garbeam@0 220 net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
garbeam@0 221 XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32,
garbeam@0 222 PropModeReplace, (unsigned char *) net_atom, NetLast);
garbeam@0 223
garbeam@0 224 /* init cursors */
garbeam@0 225 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
garbeam@0 226 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
garbeam@0 227 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
garbeam@0 228
garbeam@73 229 grabkeys();
garbeam@0 230
garbeam@5 231 /* style */
garbeam@74 232 dc.bg = getcolor(BGCOLOR);
garbeam@74 233 dc.fg = getcolor(FGCOLOR);
garbeam@74 234 dc.border = getcolor(BORDERCOLOR);
garbeam@74 235 setfont(FONT);
garbeam@5 236
garbeam@57 237 sx = sy = 0;
garbeam@57 238 sw = DisplayWidth(dpy, screen);
garbeam@57 239 sh = DisplayHeight(dpy, screen);
garbeam@57 240 mw = (sw * MASTERW) / 100;
garbeam@5 241
garbeam@57 242 wa.override_redirect = 1;
garbeam@57 243 wa.background_pixmap = ParentRelative;
garbeam@58 244 wa.event_mask = ButtonPressMask | ExposureMask;
garbeam@57 245
garbeam@57 246 bx = by = 0;
garbeam@57 247 bw = sw;
garbeam@57 248 dc.h = bh = dc.font.height + 4;
garbeam@57 249 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
garbeam@57 250 CopyFromParent, DefaultVisual(dpy, screen),
garbeam@57 251 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
garbeam@57 252 XDefineCursor(dpy, barwin, cursor[CurNormal]);
garbeam@57 253 XMapRaised(dpy, barwin);
garbeam@57 254
garbeam@60 255 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
garbeam@60 256 dc.gc = XCreateGC(dpy, root, 0, 0);
garbeam@74 257 drawstatus();
garbeam@60 258
garbeam@57 259 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
garbeam@21 260
garbeam@9 261 wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
garbeam@9 262 | LeaveWindowMask;
garbeam@0 263 wa.cursor = cursor[CurNormal];
garbeam@57 264
garbeam@0 265 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
garbeam@0 266
garbeam@57 267 strcpy(stext, "dwm-"VERSION);
garbeam@75 268 scan();
garbeam@3 269
garbeam@59 270 /* main event loop, reads status text from stdin as well */
garbeam@61 271 Mainloop:
garbeam@5 272 while(running) {
garbeam@59 273 FD_ZERO(&rd);
garbeam@65 274 if(readstdin)
garbeam@65 275 FD_SET(STDIN_FILENO, &rd);
garbeam@59 276 FD_SET(ConnectionNumber(dpy), &rd);
garbeam@59 277
garbeam@59 278 i = select(ConnectionNumber(dpy) + 1, &rd, 0, 0, 0);
garbeam@59 279 if(i == -1 && errno == EINTR)
garbeam@59 280 continue;
garbeam@59 281 if(i < 0)
garbeam@75 282 eprint("select failed\n");
garbeam@59 283 else if(i > 0) {
garbeam@64 284 if(FD_ISSET(ConnectionNumber(dpy), &rd)) {
garbeam@64 285 while(XPending(dpy)) {
garbeam@64 286 XNextEvent(dpy, &ev);
garbeam@64 287 if(handler[ev.type])
garbeam@64 288 (handler[ev.type])(&ev); /* call handler */
garbeam@64 289 }
garbeam@59 290 }
garbeam@65 291 if(readstdin && FD_ISSET(STDIN_FILENO, &rd)) {
garbeam@59 292 i = n = 0;
garbeam@60 293 for(;;) {
garbeam@60 294 if((i = getchar()) == EOF) {
garbeam@65 295 /* broken pipe/end of producer */
garbeam@65 296 readstdin = False;
garbeam@65 297 strcpy(stext, "broken pipe");
garbeam@60 298 goto Mainloop;
garbeam@60 299 }
garbeam@60 300 if(i == '\n' || n >= sizeof(stext) - 1)
garbeam@60 301 break;
garbeam@59 302 stext[n++] = i;
garbeam@60 303 }
garbeam@59 304 stext[n] = 0;
garbeam@74 305 drawstatus();
garbeam@59 306 }
garbeam@59 307 }
garbeam@5 308 }
garbeam@0 309
garbeam@0 310 cleanup();
garbeam@0 311 XCloseDisplay(dpy);
garbeam@0 312
garbeam@0 313 return 0;
garbeam@0 314 }