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annotate wm.c @ 17:aaf520f53110

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updated README
author Anselm R. Garbe <garbeam@wmii.de>
date Tue, 11 Jul 2006 18:59:09 +0200
parents 5c078b66347b
children 3ef108a5ca0a
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@14 6 #include <errno.h>
garbeam@14 7
garbeam@0 8 #include <stdarg.h>
garbeam@0 9 #include <stdio.h>
garbeam@0 10 #include <stdlib.h>
garbeam@0 11
garbeam@14 12 #include <sys/types.h>
garbeam@14 13 #include <sys/time.h>
garbeam@14 14
garbeam@0 15 #include <X11/cursorfont.h>
garbeam@0 16 #include <X11/Xatom.h>
garbeam@0 17 #include <X11/Xproto.h>
garbeam@0 18
garbeam@0 19 #include "wm.h"
garbeam@0 20
garbeam@3 21 /* X structs */
garbeam@0 22 Display *dpy;
garbeam@5 23 Window root, barwin;
garbeam@13 24 Atom wm_atom[WMLast], net_atom[NetLast];
garbeam@0 25 Cursor cursor[CurLast];
garbeam@5 26 XRectangle rect, barrect;
garbeam@5 27 Bool running = True;
garbeam@13 28 Bool sel_screen;
garbeam@3 29
garbeam@16 30 char statustext[1024], tag[256];
garbeam@13 31 int screen;
garbeam@3 32
garbeam@3 33 Brush brush = {0};
garbeam@10 34 Client *clients = NULL;
garbeam@13 35 Client *stack = NULL;
garbeam@0 36
garbeam@0 37 static Bool other_wm_running;
garbeam@16 38 static const char version[] = "gridwm - " VERSION ", (C)opyright MMVI Anselm R. Garbe\n";
garbeam@0 39 static int (*x_error_handler) (Display *, XErrorEvent *);
garbeam@0 40
garbeam@16 41 static const char *status[] = {
garbeam@16 42 "sh", "-c", "echo -n `date '+%Y/%m/%d %H:%M'`"
garbeam@16 43 " `uptime | sed 's/.*://; s/,//g'`"
garbeam@16 44 " `acpi | awk '{print $4}' | sed 's/,//'`", 0
garbeam@16 45 };
garbeam@16 46
garbeam@0 47 static void
garbeam@0 48 usage()
garbeam@0 49 {
garbeam@0 50 fputs("usage: gridwm [-v]\n", stderr);
garbeam@0 51 exit(1);
garbeam@0 52 }
garbeam@0 53
garbeam@0 54 static void
garbeam@0 55 scan_wins()
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@13 76 static int
garbeam@13 77 win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
garbeam@13 78 {
garbeam@13 79 Atom real;
garbeam@13 80 int format;
garbeam@13 81 unsigned long res, extra;
garbeam@13 82 int status;
garbeam@13 83
garbeam@13 84 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
garbeam@13 85 &res, &extra, prop);
garbeam@13 86
garbeam@13 87 if(status != Success || *prop == 0) {
garbeam@13 88 return 0;
garbeam@13 89 }
garbeam@13 90 if(res == 0) {
garbeam@13 91 free((void *) *prop);
garbeam@13 92 }
garbeam@13 93 return res;
garbeam@13 94 }
garbeam@13 95
garbeam@13 96 int
garbeam@13 97 win_proto(Window w)
garbeam@13 98 {
garbeam@13 99 Atom *protocols;
garbeam@13 100 long res;
garbeam@13 101 int protos = 0;
garbeam@13 102 int i;
garbeam@13 103
garbeam@13 104 res = win_property(w, wm_atom[WMProtocols], XA_ATOM, 20L,
garbeam@13 105 ((unsigned char **) &protocols));
garbeam@13 106 if(res <= 0) {
garbeam@13 107 return protos;
garbeam@13 108 }
garbeam@13 109 for(i = 0; i < res; i++) {
garbeam@13 110 if(protocols[i] == wm_atom[WMDelete])
garbeam@13 111 protos |= WM_PROTOCOL_DELWIN;
garbeam@13 112 }
garbeam@13 113 free((char *) protocols);
garbeam@13 114 return protos;
garbeam@13 115 }
garbeam@13 116
garbeam@13 117 void
garbeam@13 118 send_message(Window w, Atom a, long value)
garbeam@13 119 {
garbeam@13 120 XEvent e;
garbeam@13 121
garbeam@13 122 e.type = ClientMessage;
garbeam@13 123 e.xclient.window = w;
garbeam@13 124 e.xclient.message_type = a;
garbeam@13 125 e.xclient.format = 32;
garbeam@13 126 e.xclient.data.l[0] = value;
garbeam@13 127 e.xclient.data.l[1] = CurrentTime;
garbeam@13 128 XSendEvent(dpy, w, False, NoEventMask, &e);
garbeam@13 129 XFlush(dpy);
garbeam@13 130 }
garbeam@13 131
garbeam@0 132 /*
garbeam@0 133 * There's no way to check accesses to destroyed windows, thus
garbeam@0 134 * those cases are ignored (especially on UnmapNotify's).
garbeam@0 135 * Other types of errors call Xlib's default error handler, which
garbeam@0 136 * calls exit().
garbeam@0 137 */
garbeam@10 138 int
garbeam@0 139 error_handler(Display *dpy, XErrorEvent *error)
garbeam@0 140 {
garbeam@0 141 if(error->error_code == BadWindow
garbeam@0 142 || (error->request_code == X_SetInputFocus
garbeam@0 143 && error->error_code == BadMatch)
garbeam@0 144 || (error->request_code == X_PolyText8
garbeam@0 145 && error->error_code == BadDrawable)
garbeam@0 146 || (error->request_code == X_PolyFillRectangle
garbeam@0 147 && error->error_code == BadDrawable)
garbeam@0 148 || (error->request_code == X_PolySegment
garbeam@0 149 && error->error_code == BadDrawable)
garbeam@0 150 || (error->request_code == X_ConfigureWindow
garbeam@0 151 && error->error_code == BadMatch)
garbeam@0 152 || (error->request_code == X_GrabKey
garbeam@0 153 && error->error_code == BadAccess))
garbeam@0 154 return 0;
garbeam@0 155 fprintf(stderr, "gridwm: fatal error: request code=%d, error code=%d\n",
garbeam@0 156 error->request_code, error->error_code);
garbeam@0 157 return x_error_handler(dpy, error); /* may call exit() */
garbeam@0 158 }
garbeam@0 159
garbeam@0 160 /*
garbeam@0 161 * Startup Error handler to check if another window manager
garbeam@0 162 * is already running.
garbeam@0 163 */
garbeam@0 164 static int
garbeam@0 165 startup_error_handler(Display *dpy, XErrorEvent *error)
garbeam@0 166 {
garbeam@0 167 other_wm_running = True;
garbeam@0 168 return -1;
garbeam@0 169 }
garbeam@0 170
garbeam@0 171 static void
garbeam@0 172 cleanup()
garbeam@0 173 {
garbeam@14 174 while(clients)
garbeam@14 175 unmanage(clients);
garbeam@0 176 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
garbeam@0 177 }
garbeam@0 178
garbeam@0 179 int
garbeam@0 180 main(int argc, char *argv[])
garbeam@0 181 {
garbeam@0 182 int i;
garbeam@0 183 XSetWindowAttributes wa;
garbeam@0 184 unsigned int mask;
garbeam@0 185 Window w;
garbeam@5 186 XEvent ev;
garbeam@14 187 fd_set fds;
garbeam@14 188 struct timeval t, timeout = {
garbeam@14 189 .tv_usec = 0,
garbeam@14 190 .tv_sec = STATUSDELAY,
garbeam@14 191 };
garbeam@0 192
garbeam@0 193 /* command line args */
garbeam@0 194 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
garbeam@0 195 switch (argv[i][1]) {
garbeam@0 196 case 'v':
garbeam@0 197 fprintf(stdout, "%s", version);
garbeam@0 198 exit(0);
garbeam@0 199 break;
garbeam@0 200 default:
garbeam@0 201 usage();
garbeam@0 202 break;
garbeam@0 203 }
garbeam@0 204 }
garbeam@0 205
garbeam@0 206 dpy = XOpenDisplay(0);
garbeam@0 207 if(!dpy)
garbeam@0 208 error("gridwm: cannot connect X server\n");
garbeam@0 209
garbeam@0 210 screen = DefaultScreen(dpy);
garbeam@0 211 root = RootWindow(dpy, screen);
garbeam@0 212
garbeam@0 213 /* check if another WM is already running */
garbeam@0 214 other_wm_running = False;
garbeam@0 215 XSetErrorHandler(startup_error_handler);
garbeam@0 216 /* this causes an error if some other WM is running */
garbeam@0 217 XSelectInput(dpy, root, SubstructureRedirectMask);
garbeam@3 218 XFlush(dpy);
garbeam@0 219
garbeam@0 220 if(other_wm_running)
garbeam@0 221 error("gridwm: another window manager is already running\n");
garbeam@0 222
garbeam@0 223 rect.x = rect.y = 0;
garbeam@0 224 rect.width = DisplayWidth(dpy, screen);
garbeam@0 225 rect.height = DisplayHeight(dpy, screen);
garbeam@0 226 sel_screen = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
garbeam@0 227
garbeam@0 228 XSetErrorHandler(0);
garbeam@0 229 x_error_handler = XSetErrorHandler(error_handler);
garbeam@0 230
garbeam@0 231 /* init atoms */
garbeam@13 232 wm_atom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
garbeam@13 233 wm_atom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
garbeam@0 234 net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
garbeam@0 235 net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
garbeam@0 236
garbeam@0 237 XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32,
garbeam@0 238 PropModeReplace, (unsigned char *) net_atom, NetLast);
garbeam@0 239
garbeam@0 240
garbeam@0 241 /* init cursors */
garbeam@0 242 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
garbeam@0 243 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
garbeam@0 244 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
garbeam@0 245
garbeam@8 246 update_keys();
garbeam@0 247
garbeam@5 248 brush.drawable = XCreatePixmap(dpy, root, rect.width, rect.height,
garbeam@0 249 DefaultDepth(dpy, screen));
garbeam@5 250 brush.gc = XCreateGC(dpy, root, 0, 0);
garbeam@5 251
garbeam@5 252 /* style */
garbeam@5 253 loadcolors(dpy, screen, &brush, BGCOLOR, FGCOLOR, BORDERCOLOR);
garbeam@5 254 loadfont(dpy, &brush.font, FONT);
garbeam@5 255
garbeam@5 256 wa.override_redirect = 1;
garbeam@5 257 wa.background_pixmap = ParentRelative;
garbeam@5 258 wa.event_mask = ExposureMask;
garbeam@5 259
garbeam@5 260 barrect = rect;
garbeam@5 261 barrect.height = labelheight(&brush.font);
garbeam@5 262 barrect.y = rect.height - barrect.height;
garbeam@5 263 barwin = XCreateWindow(dpy, root, barrect.x, barrect.y,
garbeam@5 264 barrect.width, barrect.height, 0, DefaultDepth(dpy, screen),
garbeam@5 265 CopyFromParent, DefaultVisual(dpy, screen),
garbeam@5 266 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
garbeam@5 267 XDefineCursor(dpy, barwin, cursor[CurNormal]);
garbeam@5 268 XMapRaised(dpy, barwin);
garbeam@16 269 pipe_spawn(statustext, sizeof(statustext), dpy, (char **)status);
garbeam@5 270 draw_bar();
garbeam@0 271
garbeam@9 272 wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
garbeam@9 273 | LeaveWindowMask;
garbeam@0 274 wa.cursor = cursor[CurNormal];
garbeam@0 275 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
garbeam@0 276
garbeam@5 277 scan_wins();
garbeam@3 278
garbeam@5 279 while(running) {
garbeam@14 280 if(XPending(dpy) > 0) {
garbeam@14 281 XNextEvent(dpy, &ev);
garbeam@14 282 if(handler[ev.type])
garbeam@14 283 (handler[ev.type]) (&ev); /* call handler */
garbeam@14 284 continue;
garbeam@14 285 }
garbeam@14 286 FD_ZERO(&fds);
garbeam@14 287 FD_SET(ConnectionNumber(dpy), &fds);
garbeam@14 288 t = timeout;
garbeam@14 289 if(select(ConnectionNumber(dpy) + 1, &fds, NULL, NULL, &t) > 0)
garbeam@14 290 continue;
garbeam@16 291 else if(errno != EINTR) {
garbeam@16 292 pipe_spawn(statustext, sizeof(statustext), dpy, (char **)status);
garbeam@14 293 draw_bar();
garbeam@16 294 }
garbeam@5 295 }
garbeam@0 296
garbeam@0 297 cleanup();
garbeam@0 298 XCloseDisplay(dpy);
garbeam@0 299
garbeam@0 300 return 0;
garbeam@0 301 }