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275 lines
5.9 KiB
275 lines
5.9 KiB
/*
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* (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
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* See LICENSE file for license details.
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*/
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <X11/cursorfont.h>
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#include <X11/Xatom.h>
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#include <X11/Xproto.h>
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#include "dwm.h"
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/********** CUSTOMIZE **********/
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char *tags[TLast] = {
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[Tscratch] = "scratch",
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[Tdev] = "dev",
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[Tirc] = "irc",
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[Twww] = "www",
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[Twork] = "work",
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};
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/********** CUSTOMIZE **********/
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/* X structs */
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Display *dpy;
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Window root, barwin;
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Atom wm_atom[WMLast], net_atom[NetLast];
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Cursor cursor[CurLast];
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Bool running = True;
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Bool issel;
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char stext[1024];
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int tsel = Tdev; /* default tag */
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int screen, sx, sy, sw, sh, th;
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DC dc = {0};
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Client *cstart = NULL;
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Client *cend = NULL;
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Client *csel = NULL;
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static Bool other_wm_running;
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static const char version[] =
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"dwm - " VERSION ", (C)opyright MMVI Anselm R. Garbe\n";
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static int (*x_error_handler) (Display *, XErrorEvent *);
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static void
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usage() { error("usage: dwm [-v]\n"); }
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static void
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scan_wins()
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{
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unsigned int i, num;
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Window *wins;
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XWindowAttributes wa;
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Window d1, d2;
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if(XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
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for(i = 0; i < num; i++) {
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if(!XGetWindowAttributes(dpy, wins[i], &wa))
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continue;
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if(wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
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continue;
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if(wa.map_state == IsViewable)
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manage(wins[i], &wa);
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}
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}
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if(wins)
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XFree(wins);
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}
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static int
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win_property(Window w, Atom a, Atom t, long l, unsigned char **prop)
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{
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Atom real;
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int format;
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unsigned long res, extra;
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int status;
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status = XGetWindowProperty(dpy, w, a, 0L, l, False, t, &real, &format,
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&res, &extra, prop);
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if(status != Success || *prop == 0) {
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return 0;
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}
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if(res == 0) {
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free((void *) *prop);
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}
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return res;
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}
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int
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win_proto(Window w)
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{
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unsigned char *protocols;
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long res;
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int protos = 0;
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int i;
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res = win_property(w, wm_atom[WMProtocols], XA_ATOM, 20L, &protocols);
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if(res <= 0) {
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return protos;
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}
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for(i = 0; i < res; i++) {
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if(protocols[i] == wm_atom[WMDelete])
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protos |= WM_PROTOCOL_DELWIN;
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}
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free((char *) protocols);
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return protos;
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}
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void
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send_message(Window w, Atom a, long value)
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{
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XEvent e;
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e.type = ClientMessage;
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e.xclient.window = w;
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e.xclient.message_type = a;
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e.xclient.format = 32;
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e.xclient.data.l[0] = value;
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e.xclient.data.l[1] = CurrentTime;
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XSendEvent(dpy, w, False, NoEventMask, &e);
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XFlush(dpy);
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}
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/*
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* There's no way to check accesses to destroyed windows, thus
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* those cases are ignored (especially on UnmapNotify's).
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* Other types of errors call Xlib's default error handler, which
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* calls exit().
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*/
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int
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error_handler(Display *dpy, XErrorEvent *error)
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{
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if(error->error_code == BadWindow
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|| (error->request_code == X_SetInputFocus
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&& error->error_code == BadMatch)
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|| (error->request_code == X_PolyText8
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&& error->error_code == BadDrawable)
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|| (error->request_code == X_PolyFillRectangle
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&& error->error_code == BadDrawable)
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|| (error->request_code == X_PolySegment
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&& error->error_code == BadDrawable)
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|| (error->request_code == X_ConfigureWindow
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&& error->error_code == BadMatch)
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|| (error->request_code == X_GrabKey
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&& error->error_code == BadAccess))
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return 0;
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fprintf(stderr, "dwm: fatal error: request code=%d, error code=%d\n",
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error->request_code, error->error_code);
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return x_error_handler(dpy, error); /* may call exit() */
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}
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/*
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* Startup Error handler to check if another window manager
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* is already running.
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*/
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static int
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startup_error_handler(Display *dpy, XErrorEvent *error)
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{
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other_wm_running = True;
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return -1;
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}
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static void
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cleanup()
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{
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while(csel)
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unmanage(csel);
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XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
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}
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void
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quit(Arg *arg)
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{
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running = False;
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}
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int
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main(int argc, char *argv[])
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{
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int i;
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XSetWindowAttributes wa;
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unsigned int mask;
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Window w;
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XEvent ev;
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/* command line args */
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for(i = 1; (i < argc) && (argv[i][0] == '-'); i++) {
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switch (argv[i][1]) {
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case 'v':
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fprintf(stdout, "%s", version);
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exit(0);
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break;
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default:
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usage();
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break;
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}
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}
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dpy = XOpenDisplay(0);
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if(!dpy)
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error("dwm: cannot connect X server\n");
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screen = DefaultScreen(dpy);
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root = RootWindow(dpy, screen);
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/* check if another WM is already running */
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other_wm_running = False;
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XSetErrorHandler(startup_error_handler);
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/* this causes an error if some other WM is running */
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XSelectInput(dpy, root, SubstructureRedirectMask);
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XFlush(dpy);
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if(other_wm_running)
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error("dwm: another window manager is already running\n");
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sx = sy = 0;
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sw = DisplayWidth(dpy, screen);
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sh = DisplayHeight(dpy, screen);
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issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
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XSetErrorHandler(0);
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x_error_handler = XSetErrorHandler(error_handler);
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/* init atoms */
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wm_atom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
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wm_atom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
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net_atom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
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net_atom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
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XChangeProperty(dpy, root, net_atom[NetSupported], XA_ATOM, 32,
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PropModeReplace, (unsigned char *) net_atom, NetLast);
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/* init cursors */
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cursor[CurNormal] = XCreateFontCursor(dpy, XC_left_ptr);
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cursor[CurResize] = XCreateFontCursor(dpy, XC_sizing);
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cursor[CurMove] = XCreateFontCursor(dpy, XC_fleur);
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update_keys();
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/* style */
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dc.bg = initcolor(BGCOLOR);
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dc.fg = initcolor(FGCOLOR);
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dc.border = initcolor(BORDERCOLOR);
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initfont(FONT);
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th = dc.font.height + 4;
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dc.drawable = XCreatePixmap(dpy, root, sw, th, DefaultDepth(dpy, screen));
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dc.gc = XCreateGC(dpy, root, 0, 0);
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wa.event_mask = SubstructureRedirectMask | EnterWindowMask \
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| LeaveWindowMask;
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wa.cursor = cursor[CurNormal];
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XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
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scan_wins();
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while(running) {
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XNextEvent(dpy, &ev);
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if(handler[ev.type])
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(handler[ev.type])(&ev); /* call handler */
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}
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cleanup();
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XCloseDisplay(dpy);
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return 0;
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}
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