/*
* (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
* See LICENSE file for license details.
*/
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <X11/cursorfont.h>
#include <X11/Xatom.h>
#include <X11/Xproto.h>
#include "wm.h"
/********** CUSTOMIZE **********/
char *tags[TLast] = {
[Tscratch] = "scratch",
[Tdev] = "dev",
[Tirc] = "irc",
[Twww] = "www",
[Twork] = "work",
};
/********** CUSTOMIZE **********/
/* X structs */
Display *dpy;
Window root, barwin;
Atom wm_atom[WMLast], net_atom[NetLast];
Cursor cursor[CurLast];
Bool running = True;
Bool issel;
char stext[1024];
int tsel = Tdev; /* default tag */
int screen, sx, sy, sw, sh, th;
DC dc = {0};
Client *clients = NULL;
Client *stack = NULL;
static Bool other_wm_running;
static const char version[] =
"dwm - " VERSION ", (C)opyright MMVI Anselm R. Garbe\n";
static int (*x_error_handler) (Display *, XErrorEvent *);
static void
usage() { error("usage: dwm [-v]\n"); }
static void
scan_wins()
{
unsigned int i, num;
Window *wins;
XWindowAttributes wa;
Window d1, d2;
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 int
win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
{
Atom real;
int format;
unsigned long res, extra;
int status;
status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
&res, &extra, prop);
if(status != Success || *prop == 0) {
return 0;
}
if(res == 0) {
free((void *) *prop);
}
return res;
}
int
win_proto(Window w)
{
unsigned char *protocols;
long res;
int protos = 0;
int i;
res = win_property(w, wm_atom[WMProtocols], XA_ATOM, 20L, &protocols);
if(res <= 0) {
return protos;
}
for(i = 0; i < res; i++) {
if(protocols[i] == wm_atom[WMDelete])
protos |= WM_PROTOCOL_DELWIN;
}
free((char *) protocols);
return protos;
}
void
send_message(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);
XFlush(dpy);
}
/*
* There's no way to check accesses to destroyed windows, thus
* those cases are ignored (especially on UnmapNotify's).
* Other types of errors call Xlib's default error handler, which
* calls exit().
*/
int
error_handler(Display *dpy, XErrorEvent *error)
{
if(error->error_code == BadWindow
|| (error->request_code == X_SetInputFocus
&& error->error_code == BadMatch)
|| (error->request_code == X_PolyText8
&& error->error_code == BadDrawable)
|| (error->request_code == X_PolyFillRectangle
&& error->error_code == BadDrawable)
|| (error->request_code == X_PolySegment
&& error->error_code == BadDrawable)
|| (error->request_code == X_ConfigureWindow
&& error->error_code == BadMatch)
|| (error->request_code == X_GrabKey
&& error->error_code == BadAccess))
return 0;
fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
error->request_code, error->error_code);
return x_error_handler(dpy, error); /* may call exit() */
}
/*
* Startup Error handler to check if another window manager
* is already running.
*/
static int
startup_error_handler(Display *dpy, XErrorEvent *error)
{
other_wm_running = True;
return -1;
}
static void
cleanup()
{
while(clients)
unmanage(clients);
XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
}
void
quit(void *aux)
{
running = False;
}
int
main(int argc, char *argv[])
{
int i;
XSetWindowAttributes wa;
unsigned int mask;
Window w;
XEvent ev;
/* command line args */
for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
switch (argv[i][1]) {
case 'v':
fprintf(stdout, "%s", version);
exit(0);
break;
default:
usage();
break;
}
}
dpy = XOpenDisplay(0);
if(!dpy)
error("dwm: cannot connect X server\n");
screen = DefaultScreen(dpy);
root = RootWindow(dpy, screen);
/* check if another WM is already running */
other_wm_running = False;
XSetErrorHandler(startup_error_handler);
/* this causes an error if some other WM is running */
XSelectInput(dpy, root, SubstructureRedirectMask);
XFlush(dpy);
if(other_wm_running)
error("dwm: another window manager is already running\n");
sx = sy = 0;
sw = DisplayWidth(dpy, screen);
sh = DisplayHeight(dpy, screen);
issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
XSetErrorHandler(0);
x_error_handler = XSetErrorHandler(error_handler);
/* init atoms */
wm_atom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
wm_atom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32,
PropModeReplace, (unsigned char *) net_atom, NetLast);
/* init cursors */
cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
update_keys();
/* style */
initcolors(BGCOLOR, FGCOLOR, BORDERCOLOR);
initfont(&dc.font, FONT);
th = texth(&dc.font);
dc.drawable = XCreatePixmap(dpy, root, sw, th, DefaultDepth(dpy, screen));
dc.gc = XCreateGC(dpy, root, 0, 0);
wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
| LeaveWindowMask;
wa.cursor = cursor[CurNormal];
XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
scan_wins();
while(running) {
XNextEvent(dpy, &ev);
if(handler[ev.type])
(handler[ev.type])(&ev); /* call handler */
}
cleanup();
XCloseDisplay(dpy);
return 0;
}