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annotate main.c @ 94:6efe82c775c9

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author Anselm R. Garbe <garbeam@wmii.de>
date Tue, 18 Jul 2006 11:45:32 +0200
parents 052fe7498930
children 5d88952cbf96
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@3 17
garbeam@84 18 /* static */
garbeam@0 19
garbeam@75 20 static Bool otherwm;
garbeam@75 21 static int (*xerrorxlib)(Display *, XErrorEvent *);
garbeam@0 22
garbeam@0 23 static void
garbeam@76 24 cleanup()
garbeam@76 25 {
garbeam@76 26 while(sel) {
garbeam@76 27 resize(sel, True);
garbeam@76 28 unmanage(sel);
garbeam@76 29 }
garbeam@76 30 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
garbeam@76 31 }
garbeam@0 32
garbeam@0 33 static void
garbeam@75 34 scan()
garbeam@0 35 {
garbeam@0 36 unsigned int i, num;
garbeam@0 37 Window *wins;
garbeam@0 38 XWindowAttributes wa;
garbeam@0 39 Window d1, d2;
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 {
garbeam@13 58 Atom real;
garbeam@13 59 int format;
garbeam@13 60 unsigned long res, extra;
garbeam@13 61 int status;
garbeam@13 62
garbeam@13 63 status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
garbeam@13 64 &res, &extra, prop);
garbeam@13 65
garbeam@13 66 if(status != Success || *prop == 0) {
garbeam@13 67 return 0;
garbeam@13 68 }
garbeam@13 69 if(res == 0) {
garbeam@13 70 free((void *) *prop);
garbeam@13 71 }
garbeam@13 72 return res;
garbeam@13 73 }
garbeam@13 74
garbeam@76 75 /*
garbeam@76 76 * Startup Error handler to check if another window manager
garbeam@76 77 * is already running.
garbeam@76 78 */
garbeam@76 79 static int
garbeam@76 80 xerrorstart(Display *dsply, XErrorEvent *ee)
garbeam@76 81 {
garbeam@76 82 otherwm = True;
garbeam@76 83 return -1;
garbeam@76 84 }
garbeam@76 85
garbeam@84 86 /* extern */
garbeam@84 87
garbeam@84 88 char stext[1024];
garbeam@84 89 int tsel = Tdev; /* default tag */
garbeam@84 90 int screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
garbeam@84 91 Atom wmatom[WMLast], netatom[NetLast];
garbeam@84 92 Bool running = True;
garbeam@84 93 Bool issel = True;
garbeam@84 94 Client *clients = NULL;
garbeam@84 95 Client *sel = NULL;
garbeam@84 96 Cursor cursor[CurLast];
garbeam@84 97 Display *dpy;
garbeam@84 98 DC dc = {0};
garbeam@84 99 Window root, barwin;
garbeam@76 100
garbeam@13 101 int
garbeam@75 102 getproto(Window w)
garbeam@13 103 {
garbeam@30 104 unsigned char *protocols;
garbeam@13 105 long res;
garbeam@13 106 int protos = 0;
garbeam@13 107 int i;
garbeam@13 108
garbeam@77 109 res = win_property(w, wmatom[WMProtocols], XA_ATOM, 20L, &protocols);
garbeam@13 110 if(res <= 0) {
garbeam@13 111 return protos;
garbeam@13 112 }
garbeam@13 113 for(i = 0; i < res; i++) {
garbeam@77 114 if(protocols[i] == wmatom[WMDelete])
garbeam@13 115 protos |= WM_PROTOCOL_DELWIN;
garbeam@13 116 }
garbeam@13 117 free((char *) protocols);
garbeam@13 118 return protos;
garbeam@13 119 }
garbeam@13 120
garbeam@13 121 void
garbeam@74 122 sendevent(Window w, Atom a, long value)
garbeam@13 123 {
garbeam@13 124 XEvent e;
garbeam@13 125
garbeam@13 126 e.type = ClientMessage;
garbeam@13 127 e.xclient.window = w;
garbeam@13 128 e.xclient.message_type = a;
garbeam@13 129 e.xclient.format = 32;
garbeam@13 130 e.xclient.data.l[0] = value;
garbeam@13 131 e.xclient.data.l[1] = CurrentTime;
garbeam@13 132 XSendEvent(dpy, w, False, NoEventMask, &e);
garbeam@79 133 XSync(dpy, False);
garbeam@13 134 }
garbeam@13 135
garbeam@76 136 void
garbeam@76 137 quit(Arg *arg)
garbeam@75 138 {
garbeam@76 139 running = False;
garbeam@75 140 }
garbeam@75 141
garbeam@75 142 /*
garbeam@84 143 * There's no way to check accesses to destroyed windows, thus those cases are
garbeam@84 144 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
garbeam@84 145 * default error handler, which calls exit().
garbeam@0 146 */
garbeam@10 147 int
garbeam@75 148 xerror(Display *dpy, XErrorEvent *ee)
garbeam@0 149 {
garbeam@75 150 if(ee->error_code == BadWindow
garbeam@75 151 || (ee->request_code == X_SetInputFocus
garbeam@75 152 && ee->error_code == BadMatch)
garbeam@75 153 || (ee->request_code == X_PolyText8
garbeam@75 154 && ee->error_code == BadDrawable)
garbeam@75 155 || (ee->request_code == X_PolyFillRectangle
garbeam@75 156 && ee->error_code == BadDrawable)
garbeam@75 157 || (ee->request_code == X_PolySegment
garbeam@75 158 && ee->error_code == BadDrawable)
garbeam@75 159 || (ee->request_code == X_ConfigureWindow
garbeam@75 160 && ee->error_code == BadMatch)
garbeam@75 161 || (ee->request_code == X_GrabKey
garbeam@75 162 && ee->error_code == BadAccess))
garbeam@0 163 return 0;
garbeam@34 164 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
garbeam@75 165 ee->request_code, ee->error_code);
garbeam@75 166 return xerrorxlib(dpy, ee); /* may call exit() */
garbeam@27 167 }
garbeam@27 168
garbeam@0 169 int
garbeam@0 170 main(int argc, char *argv[])
garbeam@0 171 {
garbeam@59 172 int i, n;
garbeam@59 173 fd_set rd;
garbeam@0 174 XSetWindowAttributes wa;
garbeam@0 175 unsigned int mask;
garbeam@65 176 Bool readstdin = True;
garbeam@0 177 Window w;
garbeam@5 178 XEvent ev;
garbeam@0 179
garbeam@0 180 for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
garbeam@0 181 switch (argv[i][1]) {
garbeam@0 182 default:
garbeam@76 183 eprint("usage: dwm [-v]\n");
garbeam@0 184 break;
garbeam@92 185 case 'v':
garbeam@92 186 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
garbeam@92 187 exit(EXIT_SUCCESS);
garbeam@92 188 break;
garbeam@0 189 }
garbeam@0 190 }
garbeam@0 191
garbeam@0 192 dpy = XOpenDisplay(0);
garbeam@0 193 if(!dpy)
garbeam@75 194 eprint("dwm: cannot connect X server\n");
garbeam@0 195
garbeam@0 196 screen = DefaultScreen(dpy);
garbeam@0 197 root = RootWindow(dpy, screen);
garbeam@0 198
garbeam@0 199 /* check if another WM is already running */
garbeam@75 200 otherwm = False;
garbeam@75 201 XSetErrorHandler(xerrorstart);
garbeam@0 202 /* this causes an error if some other WM is running */
garbeam@0 203 XSelectInput(dpy, root, SubstructureRedirectMask);
garbeam@78 204 XSync(dpy, False);
garbeam@0 205
garbeam@75 206 if(otherwm)
garbeam@75 207 eprint("dwm: another window manager is already running\n");
garbeam@0 208
garbeam@78 209 XSetErrorHandler(NULL);
garbeam@75 210 xerrorxlib = XSetErrorHandler(xerror);
garbeam@0 211
garbeam@0 212 /* init atoms */
garbeam@77 213 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
garbeam@77 214 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
garbeam@77 215 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
garbeam@77 216 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
garbeam@77 217 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
garbeam@77 218 PropModeReplace, (unsigned char *) netatom, NetLast);
garbeam@0 219
garbeam@0 220 /* init cursors */
garbeam@0 221 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
garbeam@0 222 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
garbeam@0 223 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
garbeam@0 224
garbeam@73 225 grabkeys();
garbeam@0 226
garbeam@5 227 /* style */
garbeam@74 228 dc.bg = getcolor(BGCOLOR);
garbeam@74 229 dc.fg = getcolor(FGCOLOR);
garbeam@74 230 dc.border = getcolor(BORDERCOLOR);
garbeam@74 231 setfont(FONT);
garbeam@5 232
garbeam@57 233 sx = sy = 0;
garbeam@57 234 sw = DisplayWidth(dpy, screen);
garbeam@57 235 sh = DisplayHeight(dpy, screen);
garbeam@57 236 mw = (sw * MASTERW) / 100;
garbeam@5 237
garbeam@57 238 wa.override_redirect = 1;
garbeam@57 239 wa.background_pixmap = ParentRelative;
garbeam@58 240 wa.event_mask = ButtonPressMask | ExposureMask;
garbeam@57 241
garbeam@57 242 bx = by = 0;
garbeam@57 243 bw = sw;
garbeam@57 244 dc.h = bh = dc.font.height + 4;
garbeam@57 245 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
garbeam@57 246 CopyFromParent, DefaultVisual(dpy, screen),
garbeam@57 247 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
garbeam@57 248 XDefineCursor(dpy, barwin, cursor[CurNormal]);
garbeam@57 249 XMapRaised(dpy, barwin);
garbeam@57 250
garbeam@60 251 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
garbeam@60 252 dc.gc = XCreateGC(dpy, root, 0, 0);
garbeam@74 253 drawstatus();
garbeam@60 254
garbeam@57 255 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
garbeam@21 256
garbeam@9 257 wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
garbeam@9 258 | LeaveWindowMask;
garbeam@0 259 wa.cursor = cursor[CurNormal];
garbeam@57 260
garbeam@0 261 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
garbeam@0 262
garbeam@57 263 strcpy(stext, "dwm-"VERSION);
garbeam@75 264 scan();
garbeam@3 265
garbeam@59 266 /* main event loop, reads status text from stdin as well */
garbeam@61 267 Mainloop:
garbeam@5 268 while(running) {
garbeam@59 269 FD_ZERO(&rd);
garbeam@65 270 if(readstdin)
garbeam@65 271 FD_SET(STDIN_FILENO, &rd);
garbeam@59 272 FD_SET(ConnectionNumber(dpy), &rd);
garbeam@59 273
garbeam@59 274 i = select(ConnectionNumber(dpy) + 1, &rd, 0, 0, 0);
garbeam@59 275 if(i == -1 && errno == EINTR)
garbeam@59 276 continue;
garbeam@59 277 if(i < 0)
garbeam@75 278 eprint("select failed\n");
garbeam@59 279 else if(i > 0) {
garbeam@64 280 if(FD_ISSET(ConnectionNumber(dpy), &rd)) {
garbeam@64 281 while(XPending(dpy)) {
garbeam@64 282 XNextEvent(dpy, &ev);
garbeam@64 283 if(handler[ev.type])
garbeam@64 284 (handler[ev.type])(&ev); /* call handler */
garbeam@64 285 }
garbeam@59 286 }
garbeam@65 287 if(readstdin && FD_ISSET(STDIN_FILENO, &rd)) {
garbeam@59 288 i = n = 0;
garbeam@60 289 for(;;) {
garbeam@60 290 if((i = getchar()) == EOF) {
garbeam@65 291 /* broken pipe/end of producer */
garbeam@65 292 readstdin = False;
garbeam@65 293 strcpy(stext, "broken pipe");
garbeam@60 294 goto Mainloop;
garbeam@60 295 }
garbeam@60 296 if(i == '\n' || n >= sizeof(stext) - 1)
garbeam@60 297 break;
garbeam@59 298 stext[n++] = i;
garbeam@60 299 }
garbeam@59 300 stext[n] = 0;
garbeam@74 301 drawstatus();
garbeam@59 302 }
garbeam@59 303 }
garbeam@5 304 }
garbeam@0 305
garbeam@0 306 cleanup();
garbeam@0 307 XCloseDisplay(dpy);
garbeam@0 308
garbeam@0 309 return 0;
garbeam@0 310 }