garbeam@0: /*
garbeam@0:  * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
garbeam@0:  * See LICENSE file for license details.
garbeam@0:  */
garbeam@0: 
garbeam@76: #include "dwm.h"
garbeam@76: 
garbeam@59: #include <errno.h>
garbeam@0: #include <stdio.h>
garbeam@0: #include <stdlib.h>
garbeam@57: #include <string.h>
garbeam@59: #include <unistd.h>
garbeam@0: #include <X11/cursorfont.h>
garbeam@0: #include <X11/Xatom.h>
garbeam@0: #include <X11/Xproto.h>
garbeam@0: 
garbeam@0: Display *dpy;
garbeam@5: Window root, barwin;
garbeam@77: Atom wmatom[WMLast], netatom[NetLast];
garbeam@0: Cursor cursor[CurLast];
garbeam@5: Bool running = True;
garbeam@77: Bool issel = True;
garbeam@3: 
garbeam@31: int tsel = Tdev; /* default tag */
garbeam@57: int screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
garbeam@57: char stext[1024];
garbeam@3: 
garbeam@34: DC dc = {0};
garbeam@50: Client *clients = NULL;
garbeam@50: Client *sel = NULL;
garbeam@0: 
garbeam@75: static Bool otherwm;
garbeam@75: static int (*xerrorxlib)(Display *, XErrorEvent *);
garbeam@0: 
garbeam@76: /* static functions */
garbeam@76: 
garbeam@0: static void
garbeam@76: cleanup()
garbeam@76: {
garbeam@76: 	while(sel) {
garbeam@76: 		resize(sel, True);
garbeam@76: 		unmanage(sel);
garbeam@76: 	}
garbeam@76: 	XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
garbeam@76: }
garbeam@0: 
garbeam@0: static void
garbeam@75: scan()
garbeam@0: {
garbeam@0: 	unsigned int i, num;
garbeam@0: 	Window *wins;
garbeam@0: 	XWindowAttributes wa;
garbeam@0: 	Window d1, d2;
garbeam@0: 
garbeam@0: 	if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
garbeam@0: 		for(i = 0; i < num; i++) {
garbeam@0: 			if(!XGetWindowAttributes(dpy, wins[i], &wa))
garbeam@0: 				continue;
garbeam@0: 			if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
garbeam@0: 				continue;
garbeam@0: 			if(wa.map_state == IsViewable)
garbeam@10: 				manage(wins[i], &wa);
garbeam@0: 		}
garbeam@0: 	}
garbeam@0: 	if(wins)
garbeam@0: 		XFree(wins);
garbeam@0: }
garbeam@0: 
garbeam@13: static int
garbeam@13: win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
garbeam@13: {
garbeam@13: 	Atom real;
garbeam@13: 	int format;
garbeam@13: 	unsigned long res, extra;
garbeam@13: 	int status;
garbeam@13: 
garbeam@13: 	status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
garbeam@13: 			&res, &extra, prop);
garbeam@13: 
garbeam@13: 	if(status != Success || *prop == 0) {
garbeam@13: 		return 0;
garbeam@13: 	}
garbeam@13: 	if(res == 0) {
garbeam@13: 		free((void *) *prop);
garbeam@13: 	}
garbeam@13: 	return res;
garbeam@13: }
garbeam@13: 
garbeam@76: /*
garbeam@76:  * Startup Error handler to check if another window manager
garbeam@76:  * is already running.
garbeam@76:  */
garbeam@76: static int
garbeam@76: xerrorstart(Display *dsply, XErrorEvent *ee)
garbeam@76: {
garbeam@76: 	otherwm = True;
garbeam@76: 	return -1;
garbeam@76: }
garbeam@76: 
garbeam@76: /* extern functions */
garbeam@76: 
garbeam@13: int
garbeam@75: getproto(Window w)
garbeam@13: {
garbeam@30: 	unsigned char *protocols;
garbeam@13: 	long res;
garbeam@13: 	int protos = 0;
garbeam@13: 	int i;
garbeam@13: 
garbeam@77: 	res = win_property(w, wmatom[WMProtocols], XA_ATOM, 20L, &protocols);
garbeam@13: 	if(res <= 0) {
garbeam@13: 		return protos;
garbeam@13: 	}
garbeam@13: 	for(i = 0; i < res; i++) {
garbeam@77: 		if(protocols[i] == wmatom[WMDelete])
garbeam@13: 			protos |= WM_PROTOCOL_DELWIN;
garbeam@13: 	}
garbeam@13: 	free((char *) protocols);
garbeam@13: 	return protos;
garbeam@13: }
garbeam@13: 
garbeam@13: void
garbeam@74: sendevent(Window w, Atom a, long value)
garbeam@13: {
garbeam@13: 	XEvent e;
garbeam@13: 
garbeam@13: 	e.type = ClientMessage;
garbeam@13: 	e.xclient.window = w;
garbeam@13: 	e.xclient.message_type = a;
garbeam@13: 	e.xclient.format = 32;
garbeam@13: 	e.xclient.data.l[0] = value;
garbeam@13: 	e.xclient.data.l[1] = CurrentTime;
garbeam@13: 	XSendEvent(dpy, w, False, NoEventMask, &e);
garbeam@79: 	XSync(dpy, False);
garbeam@13: }
garbeam@13: 
garbeam@76: void
garbeam@76: quit(Arg *arg)
garbeam@75: {
garbeam@76: 	running = False;
garbeam@75: }
garbeam@75: 
garbeam@75: /*
garbeam@0:  * There's no way to check accesses to destroyed windows, thus
garbeam@0:  * those cases are ignored (especially on UnmapNotify's).
garbeam@0:  * Other types of errors call Xlib's default error handler, which
garbeam@0:  * calls exit().
garbeam@0:  */
garbeam@10: int
garbeam@75: xerror(Display *dpy, XErrorEvent *ee)
garbeam@0: {
garbeam@75: 	if(ee->error_code == BadWindow
garbeam@75: 			|| (ee->request_code == X_SetInputFocus
garbeam@75: 				&& ee->error_code == BadMatch)
garbeam@75: 			|| (ee->request_code == X_PolyText8
garbeam@75: 				&& ee->error_code == BadDrawable)
garbeam@75: 			|| (ee->request_code == X_PolyFillRectangle
garbeam@75: 				&& ee->error_code == BadDrawable)
garbeam@75: 			|| (ee->request_code == X_PolySegment
garbeam@75: 				&& ee->error_code == BadDrawable)
garbeam@75: 			|| (ee->request_code == X_ConfigureWindow
garbeam@75: 				&& ee->error_code == BadMatch)
garbeam@75: 			|| (ee->request_code == X_GrabKey
garbeam@75: 				&& ee->error_code == BadAccess))
garbeam@0: 		return 0;
garbeam@34: 	fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
garbeam@75: 			ee->request_code, ee->error_code);
garbeam@75: 	return xerrorxlib(dpy, ee); /* may call exit() */
garbeam@27: }
garbeam@27: 
garbeam@0: int
garbeam@0: main(int argc, char *argv[])
garbeam@0: {
garbeam@59: 	int i, n;
garbeam@59: 	fd_set rd;
garbeam@0: 	XSetWindowAttributes wa;
garbeam@0: 	unsigned int mask;
garbeam@65: 	Bool readstdin = True;
garbeam@0: 	Window w;
garbeam@5: 	XEvent ev;
garbeam@0: 
garbeam@0: 	for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
garbeam@0: 		switch (argv[i][1]) {
garbeam@0: 		case 'v':
garbeam@77: 			fprintf(stdout, "%s",
garbeam@77: 					"dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n");
garbeam@0: 			exit(0);
garbeam@0: 			break;
garbeam@0: 		default:
garbeam@76: 			eprint("usage: dwm [-v]\n");
garbeam@0: 			break;
garbeam@0: 		}
garbeam@0: 	}
garbeam@0: 
garbeam@0: 	dpy = XOpenDisplay(0);
garbeam@0: 	if(!dpy)
garbeam@75: 		eprint("dwm: cannot connect X server\n");
garbeam@0: 
garbeam@0: 	screen = DefaultScreen(dpy);
garbeam@0: 	root = RootWindow(dpy, screen);
garbeam@0: 
garbeam@0: 	/* check if another WM is already running */
garbeam@75: 	otherwm = False;
garbeam@75: 	XSetErrorHandler(xerrorstart);
garbeam@0: 	/* this causes an error if some other WM is running */
garbeam@0: 	XSelectInput(dpy, root, SubstructureRedirectMask);
garbeam@78: 	XSync(dpy, False);
garbeam@0: 
garbeam@75: 	if(otherwm)
garbeam@75: 		eprint("dwm: another window manager is already running\n");
garbeam@0: 
garbeam@78: 	XSetErrorHandler(NULL);
garbeam@75: 	xerrorxlib = XSetErrorHandler(xerror);
garbeam@0: 
garbeam@0: 	/* init atoms */
garbeam@77: 	wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
garbeam@77: 	wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
garbeam@77: 	netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
garbeam@77: 	netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
garbeam@77: 	XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
garbeam@77: 			PropModeReplace, (unsigned char *) netatom, NetLast);
garbeam@0: 
garbeam@0: 	/* init cursors */
garbeam@0: 	cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
garbeam@0: 	cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
garbeam@0: 	cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
garbeam@0: 
garbeam@73: 	grabkeys();
garbeam@0: 
garbeam@5: 	/* style */
garbeam@74: 	dc.bg = getcolor(BGCOLOR);
garbeam@74: 	dc.fg = getcolor(FGCOLOR);
garbeam@74: 	dc.border = getcolor(BORDERCOLOR);
garbeam@74: 	setfont(FONT);
garbeam@5: 
garbeam@57: 	sx = sy = 0;
garbeam@57: 	sw = DisplayWidth(dpy, screen);
garbeam@57: 	sh = DisplayHeight(dpy, screen);
garbeam@57: 	mw = (sw * MASTERW) / 100;
garbeam@5: 
garbeam@57: 	wa.override_redirect = 1;
garbeam@57: 	wa.background_pixmap = ParentRelative;
garbeam@58: 	wa.event_mask = ButtonPressMask | ExposureMask;
garbeam@57: 
garbeam@57: 	bx = by = 0;
garbeam@57: 	bw = sw;
garbeam@57: 	dc.h = bh = dc.font.height + 4;
garbeam@57: 	barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
garbeam@57: 			CopyFromParent, DefaultVisual(dpy, screen),
garbeam@57: 			CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
garbeam@57: 	XDefineCursor(dpy, barwin, cursor[CurNormal]);
garbeam@57: 	XMapRaised(dpy, barwin);
garbeam@57: 
garbeam@60: 	dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
garbeam@60: 	dc.gc = XCreateGC(dpy, root, 0, 0);
garbeam@74: 	drawstatus();
garbeam@60: 
garbeam@57: 	issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
garbeam@21: 
garbeam@9: 	wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
garbeam@9: 					| LeaveWindowMask;
garbeam@0: 	wa.cursor = cursor[CurNormal];
garbeam@57: 
garbeam@0: 	XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
garbeam@0: 
garbeam@57: 	strcpy(stext, "dwm-"VERSION);
garbeam@75: 	scan();
garbeam@3: 
garbeam@59: 	/* main event loop, reads status text from stdin as well */
garbeam@61: Mainloop:
garbeam@5: 	while(running) {
garbeam@59: 		FD_ZERO(&rd);
garbeam@65: 		if(readstdin)
garbeam@65: 			FD_SET(STDIN_FILENO, &rd);
garbeam@59: 		FD_SET(ConnectionNumber(dpy), &rd);
garbeam@59: 
garbeam@59: 		i = select(ConnectionNumber(dpy) + 1, &rd, 0, 0, 0);
garbeam@59: 		if(i == -1 && errno == EINTR)
garbeam@59: 			continue;
garbeam@59: 		if(i < 0)
garbeam@75: 			eprint("select failed\n");
garbeam@59: 		else if(i > 0) {
garbeam@64: 			if(FD_ISSET(ConnectionNumber(dpy), &rd)) {
garbeam@64: 				while(XPending(dpy)) {
garbeam@64: 					XNextEvent(dpy, &ev);
garbeam@64: 					if(handler[ev.type])
garbeam@64: 						(handler[ev.type])(&ev); /* call handler */
garbeam@64: 				}
garbeam@59: 			}
garbeam@65: 			if(readstdin && FD_ISSET(STDIN_FILENO, &rd)) {
garbeam@59: 				i = n = 0;
garbeam@60: 				for(;;) {
garbeam@60: 					if((i = getchar()) == EOF) {
garbeam@65: 						/* broken pipe/end of producer */
garbeam@65: 						readstdin = False;
garbeam@65: 						strcpy(stext, "broken pipe");
garbeam@60: 						goto Mainloop;
garbeam@60: 					}
garbeam@60: 					if(i == '\n' || n >= sizeof(stext) - 1)
garbeam@60: 						break;
garbeam@59: 					stext[n++] = i;
garbeam@60: 				}
garbeam@59: 				stext[n] = 0;
garbeam@74: 				drawstatus();
garbeam@59: 			}
garbeam@59: 		}
garbeam@5: 	}
garbeam@0: 
garbeam@0: 	cleanup();
garbeam@0: 	XCloseDisplay(dpy);
garbeam@0: 
garbeam@0: 	return 0;
garbeam@0: }