/* (C)opyright MMVI-MMVII Anselm R. Garbe <garbeam at gmail dot com>
* See LICENSE file for license details.
*/
#include "dwm.h"
#include <errno.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/select.h>
#include <X11/cursorfont.h>
#include <X11/keysym.h>
#include <X11/Xatom.h>
#include <X11/Xproto.h>
/* extern */
char stext[256];
Bool *seltag;
int bh, bmw, screen, sx, sy, sw, sh, wax, way, waw, wah;
unsigned int master, nmaster, ntags, numlockmask;
Atom wmatom[WMLast], netatom[NetLast];
Bool running = True;
Bool issel = True;
Client *clients = NULL;
Client *sel = NULL;
Client *stack = NULL;
Cursor cursor[CurLast];
Display *dpy;
DC dc = {0};
Window root, barwin;
/* static */
static int (*xerrorxlib)(Display *, XErrorEvent *);
static Bool otherwm, readin;
static void
cleanup(void) {
close(STDIN_FILENO);
while(stack) {
resize(stack, True);
unmanage(stack);
}
if(dc.font.set)
XFreeFontSet(dpy, dc.font.set);
else
XFreeFont(dpy, dc.font.xfont);
XUngrabKey(dpy, AnyKey, AnyModifier, root);
XFreePixmap(dpy, dc.drawable);
XFreeGC(dpy, dc.gc);
XDestroyWindow(dpy, barwin);
XFreeCursor(dpy, cursor[CurNormal]);
XFreeCursor(dpy, cursor[CurResize]);
XFreeCursor(dpy, cursor[CurMove]);
XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
XSync(dpy, False);
free(seltag);
}
static void
scan(void) {
unsigned int i, num;
Window *wins, d1, d2;
XWindowAttributes wa;
wins = NULL;
if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
for(i = 0; i < num; i++) {
if(!XGetWindowAttributes(dpy, wins[i], &wa))
continue;
if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
continue;
if(wa.map_state == IsViewable)
manage(wins[i], &wa);
}
}
if(wins)
XFree(wins);
}
static void
setup(void) {
int i, j;
unsigned int mask;
Window w;
XModifierKeymap *modmap;
XSetWindowAttributes wa;
/* init atoms */
wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
PropModeReplace, (unsigned char *) netatom, NetLast);
/* init cursors */
cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
/* init modifier map */
numlockmask = 0;
modmap = XGetModifierMapping(dpy);
for (i = 0; i < 8; i++) {
for (j = 0; j < modmap->max_keypermod; j++) {
if(modmap->modifiermap[i * modmap->max_keypermod + j] == XKeysymToKeycode(dpy, XK_Num_Lock))
numlockmask = (1 << i);
}
}
XFreeModifiermap(modmap);
/* select for events */
wa.event_mask = SubstructureRedirectMask | SubstructureNotifyMask
| EnterWindowMask | LeaveWindowMask;
wa.cursor = cursor[CurNormal];
XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
grabkeys();
initrregs();
for(ntags = 0; tags[ntags]; ntags++);
seltag = emallocz(sizeof(Bool) * ntags);
seltag[0] = True;
/* style */
dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
dc.norm[ColBG] = getcolor(NORMBGCOLOR);
dc.norm[ColFG] = getcolor(NORMFGCOLOR);
dc.sel[ColBorder] = getcolor(SELBORDERCOLOR);
dc.sel[ColBG] = getcolor(SELBGCOLOR);
dc.sel[ColFG] = getcolor(SELFGCOLOR);
setfont(FONT);
/* geometry */
sx = sy = 0;
sw = DisplayWidth(dpy, screen);
sh = DisplayHeight(dpy, screen);
master = MASTER;
nmaster = NMASTER;
bmw = textw(TILESYMBOL) > textw(FLOATSYMBOL) ? textw(TILESYMBOL) : textw(FLOATSYMBOL);
/* bar */
dc.h = bh = dc.font.height + 2;
wa.override_redirect = 1;
wa.background_pixmap = ParentRelative;
wa.event_mask = ButtonPressMask | ExposureMask;
barwin = XCreateWindow(dpy, root, sx, sy, sw, bh, 0, DefaultDepth(dpy, screen),
CopyFromParent, DefaultVisual(dpy, screen),
CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
XDefineCursor(dpy, barwin, cursor[CurNormal]);
XMapRaised(dpy, barwin);
strcpy(stext, "dwm-"VERSION);
/* windowarea */
wax = sx;
way = sy + bh;
wah = sh - bh;
waw = sw;
/* pixmap for everything */
dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
dc.gc = XCreateGC(dpy, root, 0, 0);
XSetLineAttributes(dpy, dc.gc, 1, LineSolid, CapButt, JoinMiter);
/* multihead support */
issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
}
/*
* Startup Error handler to check if another window manager
* is already running.
*/
static int
xerrorstart(Display *dsply, XErrorEvent *ee) {
otherwm = True;
return -1;
}
/* extern */
int
getproto(Window w) {
int i, format, protos, status;
unsigned long extra, res;
Atom *protocols, real;
protos = 0;
status = XGetWindowProperty(dpy, w, wmatom[WMProtocols], 0L, 20L, False,
XA_ATOM, &real, &format, &res, &extra, (unsigned char **)&protocols);
if(status != Success || protocols == 0)
return protos;
for(i = 0; i < res; i++)
if(protocols[i] == wmatom[WMDelete])
protos |= PROTODELWIN;
free(protocols);
return protos;
}
void
sendevent(Window w, Atom a, long value) {
XEvent e;
e.type = ClientMessage;
e.xclient.window = w;
e.xclient.message_type = a;
e.xclient.format = 32;
e.xclient.data.l[0] = value;
e.xclient.data.l[1] = CurrentTime;
XSendEvent(dpy, w, False, NoEventMask, &e);
XSync(dpy, False);
}
void
quit(Arg *arg) {
readin = running = False;
}
/* There's no way to check accesses to destroyed windows, thus those cases are
* ignored (especially on UnmapNotify's). Other types of errors call Xlibs
* default error handler, which may call exit.
*/
int
xerror(Display *dpy, XErrorEvent *ee) {
if(ee->error_code == BadWindow
|| (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
|| (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
|| (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
|| (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
|| (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
|| (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
|| (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
return 0;
fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
ee->request_code, ee->error_code);
return xerrorxlib(dpy, ee); /* may call exit */
}
int
main(int argc, char *argv[]) {
char *p;
int r, xfd;
fd_set rd;
if(argc == 2 && !strncmp("-v", argv[1], 3)) {
fputs("dwm-"VERSION", (C)opyright MMVI-MMVII Anselm R. Garbe\n", stdout);
exit(EXIT_SUCCESS);
}
else if(argc != 1)
eprint("usage: dwm [-v]\n");
setlocale(LC_CTYPE, "");
dpy = XOpenDisplay(0);
if(!dpy)
eprint("dwm: cannot open display\n");
xfd = ConnectionNumber(dpy);
screen = DefaultScreen(dpy);
root = RootWindow(dpy, screen);
otherwm = False;
XSetErrorHandler(xerrorstart);
/* this causes an error if some other window manager is running */
XSelectInput(dpy, root, SubstructureRedirectMask);
XSync(dpy, False);
if(otherwm)
eprint("dwm: another window manager is already running\n");
XSync(dpy, False);
XSetErrorHandler(NULL);
xerrorxlib = XSetErrorHandler(xerror);
XSync(dpy, False);
setup();
drawstatus();
scan();
/* main event loop, also reads status text from stdin */
XSync(dpy, False);
procevent();
readin = True;
while(running) {
FD_ZERO(&rd);
if(readin)
FD_SET(STDIN_FILENO, &rd);
FD_SET(xfd, &rd);
if(select(xfd + 1, &rd, NULL, NULL, NULL) == -1) {
if(errno == EINTR)
continue;
eprint("select failed\n");
}
if(FD_ISSET(STDIN_FILENO, &rd)) {
switch(r = read(STDIN_FILENO, stext, sizeof stext - 1)) {
case -1:
strncpy(stext, strerror(errno), sizeof stext - 1);
stext[sizeof stext - 1] = '\0';
readin = False;
break;
case 0:
strncpy(stext, "EOF", 4);
readin = False;
break;
default:
for(stext[r] = '\0', p = stext + strlen(stext) - 1; p >= stext && *p == '\n'; *p-- = '\0');
for(p = stext + strlen(stext) - 1; p >= stext && *p != '\n'; --p);
if(p > stext)
strncpy(stext, p + 1, sizeof stext);
}
drawstatus();
}
if(FD_ISSET(xfd, &rd))
procevent();
}
cleanup();
XCloseDisplay(dpy);
return 0;
}