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287 lines
6.6 KiB
287 lines
6.6 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 "dwm.h"
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/select.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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/* static */
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static int (*xerrorxlib)(Display *, XErrorEvent *);
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static Bool otherwm;
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static void
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cleanup()
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{
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while(sel) {
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resize(sel, True, TopLeft);
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unmanage(sel);
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}
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XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
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}
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static void
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scan()
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{
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unsigned int i, num;
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Window *wins, d1, d2;
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XWindowAttributes wa;
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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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int status, format;
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unsigned long res, extra;
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Atom real;
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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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/*
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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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xerrorstart(Display *dsply, XErrorEvent *ee)
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{
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otherwm = True;
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return -1;
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}
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/* extern */
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char stext[1024];
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int tsel = DEFTAG;
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int screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
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Atom wmatom[WMLast], netatom[NetLast];
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Bool running = True;
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Bool issel = True;
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Client *clients = NULL;
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Client *sel = NULL;
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Cursor cursor[CurLast];
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Display *dpy;
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DC dc = {0};
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Window root, barwin;
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int
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getproto(Window w)
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{
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int protos = 0;
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int i;
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long res;
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unsigned char *protocols;
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res = win_property(w, wmatom[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] == wmatom[WMDelete])
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protos |= PROTODELWIN;
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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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sendevent(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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XSync(dpy, False);
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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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/*
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* There's no way to check accesses to destroyed windows, thus those cases are
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* ignored (especially on UnmapNotify's). Other types of errors call Xlibs
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* default error handler, which calls exit().
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*/
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int
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xerror(Display *dpy, XErrorEvent *ee)
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{
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if(ee->error_code == BadWindow
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|| (ee->request_code == X_SetInputFocus && ee->error_code == BadMatch)
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|| (ee->request_code == X_PolyText8 && ee->error_code == BadDrawable)
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|| (ee->request_code == X_PolyFillRectangle && ee->error_code == BadDrawable)
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|| (ee->request_code == X_PolySegment && ee->error_code == BadDrawable)
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|| (ee->request_code == X_ConfigureWindow && ee->error_code == BadMatch)
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|| (ee->request_code == X_GrabKey && ee->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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ee->request_code, ee->error_code);
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return xerrorxlib(dpy, ee); /* may call exit() */
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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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unsigned int mask;
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fd_set rd;
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Bool readin = True;
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Window w;
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XEvent ev;
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XSetWindowAttributes wa;
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if(argc == 2 && !strncmp("-v", argv[1], 3)) {
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fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
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exit(EXIT_SUCCESS);
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}
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else if(argc != 1)
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eprint("usage: dwm [-v]\n");
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dpy = XOpenDisplay(0);
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if(!dpy)
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eprint("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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otherwm = False;
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XSetErrorHandler(xerrorstart);
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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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XSync(dpy, False);
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if(otherwm)
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eprint("dwm: another window manager is already running\n");
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XSetErrorHandler(NULL);
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xerrorxlib = XSetErrorHandler(xerror);
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/* init atoms */
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wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
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wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
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netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
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netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
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XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
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PropModeReplace, (unsigned char *) netatom, 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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grabkeys();
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/* style */
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dc.bg = getcolor(BGCOLOR);
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dc.fg = getcolor(FGCOLOR);
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dc.border = getcolor(BORDERCOLOR);
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setfont(FONT);
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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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mw = (sw * MASTERW) / 100;
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wa.override_redirect = 1;
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wa.background_pixmap = ParentRelative;
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wa.event_mask = ButtonPressMask | ExposureMask;
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bx = by = 0;
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bw = sw;
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dc.h = bh = dc.font.height + 4;
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barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
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CopyFromParent, DefaultVisual(dpy, screen),
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CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
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XDefineCursor(dpy, barwin, cursor[CurNormal]);
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XMapRaised(dpy, barwin);
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dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
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dc.gc = XCreateGC(dpy, root, 0, 0);
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drawstatus();
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issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
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wa.event_mask = SubstructureRedirectMask | EnterWindowMask | LeaveWindowMask;
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wa.cursor = cursor[CurNormal];
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XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
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strcpy(stext, "dwm-"VERSION);
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scan();
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/* main event loop, reads status text from stdin as well */
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while(running) {
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FD_ZERO(&rd);
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if(readin)
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FD_SET(STDIN_FILENO, &rd);
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FD_SET(ConnectionNumber(dpy), &rd);
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i = select(ConnectionNumber(dpy) + 1, &rd, 0, 0, 0);
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if(i == -1 && errno == EINTR)
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continue;
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if(i < 0)
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eprint("select failed\n");
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else if(i > 0) {
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if(FD_ISSET(ConnectionNumber(dpy), &rd)) {
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while(XPending(dpy)) {
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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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}
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if(readin && FD_ISSET(STDIN_FILENO, &rd)) {
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readin = NULL != fgets(stext, sizeof(stext), stdin);
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if(readin)
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stext[strlen(stext) - 1] = 0;
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else
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strcpy(stext, "broken pipe");
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drawstatus();
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}
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}
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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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