1 /* (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
2 * See LICENSE file for license details.
11 #include <sys/select.h>
12 #include <X11/cursorfont.h>
13 #include <X11/keysym.h>
14 #include <X11/Xatom.h>
15 #include <X11/Xproto.h>
21 int bx, by, bw, bh, bmw, masterd, screen, sx, sy, sw, sh;
22 unsigned int master, ntags, numlockmask;
23 Atom wmatom[WMLast], netatom[NetLast];
26 Client *clients = NULL;
29 Cursor cursor[CurLast];
36 static int (*xerrorxlib)(Display *, XErrorEvent *);
37 static Bool otherwm, readin;
43 resize(sel, True, TopLeft);
47 XFreeFontSet(dpy, dc.font.set);
49 XFreeFont(dpy, dc.font.xfont);
50 XUngrabKey(dpy, AnyKey, AnyModifier, root);
51 XFreePixmap(dpy, dc.drawable);
53 XDestroyWindow(dpy, barwin);
54 XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
66 if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
67 for(i = 0; i < num; i++) {
68 if(!XGetWindowAttributes(dpy, wins[i], &wa))
70 if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
72 if(wa.map_state == IsViewable)
85 XModifierKeymap *modmap;
86 XSetWindowAttributes wa;
89 wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
90 wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
91 netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
92 netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
93 XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
94 PropModeReplace, (unsigned char *) netatom, NetLast);
96 cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
97 cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
98 cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
99 /* init modifier map */
100 modmap = XGetModifierMapping(dpy);
101 for (i = 0; i < 8; i++) {
102 for (j = 0; j < modmap->max_keypermod; j++) {
103 if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
104 numlockmask = (1 << i);
108 /* select for events */
109 wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
110 | EnterWindowMask | LeaveWindowMask;
111 wa.cursor = cursor[CurNormal];
112 XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
115 for(ntags = 0; tags[ntags]; ntags++);
116 seltag = emallocz(sizeof(Bool) * ntags);
119 dc.norm[ColBG] = getcolor(NORMBGCOLOR);
120 dc.norm[ColFG] = getcolor(NORMFGCOLOR);
121 dc.sel[ColBG] = getcolor(SELBGCOLOR);
122 dc.sel[ColFG] = getcolor(SELFGCOLOR);
123 dc.status[ColBG] = getcolor(STATUSBGCOLOR);
124 dc.status[ColFG] = getcolor(STATUSFGCOLOR);
127 bmw = textw(TILESYMBOL) > textw(FLOATSYMBOL) ? textw(TILESYMBOL) : textw(FLOATSYMBOL);
129 sw = DisplayWidth(dpy, screen);
130 sh = DisplayHeight(dpy, screen);
135 dc.h = bh = dc.font.height + 2;
136 wa.override_redirect = 1;
137 wa.background_pixmap = ParentRelative;
138 wa.event_mask = ButtonPressMask | ExposureMask;
139 barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
140 CopyFromParent, DefaultVisual(dpy, screen),
141 CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
142 XDefineCursor(dpy, barwin, cursor[CurNormal]);
143 XMapRaised(dpy, barwin);
144 strcpy(stext, "dwm-"VERSION);
145 /* pixmap for everything */
146 dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
147 dc.gc = XCreateGC(dpy, root, 0, 0);
148 XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
149 /* multihead support */
150 issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
154 * Startup Error handler to check if another window manager
155 * is already running.
158 xerrorstart(Display *dsply, XErrorEvent *ee) {
167 int i, format, protos, status;
168 unsigned long extra, res;
169 Atom *protocols, real;
172 status = XGetWindowProperty(dpy, w, wmatom[WMProtocols], 0L, 20L, False,
173 XA_ATOM, &real, &format, &res, &extra, (unsigned char **)&protocols);
174 if(status != Success || protocols == 0)
176 for(i = 0; i < res; i++)
177 if(protocols[i] == wmatom[WMDelete])
178 protos |= PROTODELWIN;
184 sendevent(Window w, Atom a, long value) {
187 e.type = ClientMessage;
188 e.xclient.window = w;
189 e.xclient.message_type = a;
190 e.xclient.format = 32;
191 e.xclient.data.l[0] = value;
192 e.xclient.data.l[1] = CurrentTime;
193 XSendEvent(dpy, w, False, NoEventMask, &e);
199 readin = running = False;
202 /* There's no way to check accesses to destroyed windows, thus those cases are
203 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
204 * default error handler, which may call exit.
207 xerror(Display *dpy, XErrorEvent *ee) {
208 if(ee->error_code == BadWindow
209 || (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
210 || (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
211 || (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
212 || (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
213 || (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
214 || (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
215 || (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
217 fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
218 ee->request_code, ee->error_code);
219 return xerrorxlib(dpy, ee); /* may call exit */
223 main(int argc, char *argv[]) {
227 if(argc == 2 && !strncmp("-v", argv[1], 3)) {
228 fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
232 eprint("usage: dwm [-v]\n");
233 dpy = XOpenDisplay(0);
235 eprint("dwm: cannot open display\n");
236 xfd = ConnectionNumber(dpy);
237 screen = DefaultScreen(dpy);
238 root = RootWindow(dpy, screen);
240 XSetErrorHandler(xerrorstart);
241 /* this causes an error if some other window manager is running */
242 XSelectInput(dpy, root, SubstructureRedirectMask);
245 eprint("dwm: another window manager is already running\n");
248 XSetErrorHandler(NULL);
249 xerrorxlib = XSetErrorHandler(xerror);
255 /* main event loop, also reads status text from stdin */
262 FD_SET(STDIN_FILENO, &rd);
264 r = select(xfd + 1, &rd, NULL, NULL, NULL);
265 if((r == -1) && (errno == EINTR))
268 if(readin && FD_ISSET(STDIN_FILENO, &rd)) {
269 readin = NULL != fgets(stext, sizeof(stext), stdin);
271 stext[strlen(stext) - 1] = 0;
273 strcpy(stext, "broken pipe");
278 eprint("select failed\n");