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- /*
- * (C)opyright MMVI Anselm R. Garbe <garbeam at gmail dot com>
- * See LICENSE file for license details.
- */
-
- #include "dwm.h"
- #include <errno.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include <unistd.h>
- #include <sys/select.h>
- #include <X11/cursorfont.h>
- #include <X11/Xatom.h>
- #include <X11/Xproto.h>
-
- /* static */
-
- static int (*xerrorxlib)(Display *, XErrorEvent *);
- static Bool otherwm;
-
- static void
- cleanup()
- {
- while(sel) {
- resize(sel, True, TopLeft);
- unmanage(sel);
- }
- XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
- }
-
- static void
- scan()
- {
- unsigned int i, num;
- Window *wins, d1, d2;
- XWindowAttributes wa;
-
- 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)
- {
- int status, format;
- unsigned long res, extra;
- Atom real;
-
- 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;
- }
-
- /*
- * Startup Error handler to check if another window manager
- * is already running.
- */
- static int
- xerrorstart(Display *dsply, XErrorEvent *ee)
- {
- otherwm = True;
- return -1;
- }
-
- /* extern */
-
- char stext[1024];
- int tsel = DEFTAG;
- int screen, sx, sy, sw, sh, bx, by, bw, bh, mw;
- unsigned int ntags;
- Atom wmatom[WMLast], netatom[NetLast];
- Bool running = True;
- Bool issel = True;
- Client *clients = NULL;
- Client *sel = NULL;
- Cursor cursor[CurLast];
- Display *dpy;
- DC dc = {0};
- Window root, barwin;
-
- int
- getproto(Window w)
- {
- int protos = 0;
- int i;
- long res;
- Atom *protocols;
-
- res = win_property(w, wmatom[WMProtocols], XA_ATOM, 20L,
- ((unsigned char **)&protocols));
- if(res <= 0) {
- return protos;
- }
- for(i = 0; i < res; i++) {
- if(protocols[i] == wmatom[WMDelete])
- protos |= PROTODELWIN;
- }
- free((char *) 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)
- {
- 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 calls 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))
- 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[])
- {
- int i;
- unsigned int mask;
- fd_set rd;
- Bool readin = True;
- Window w;
- XEvent ev;
- XSetWindowAttributes wa;
-
- if(argc == 2 && !strncmp("-v", argv[1], 3)) {
- fputs("dwm-"VERSION", (C)opyright MMVI Anselm R. Garbe\n", stdout);
- exit(EXIT_SUCCESS);
- }
- else if(argc != 1)
- eprint("usage: dwm [-v]\n");
-
- dpy = XOpenDisplay(0);
- if(!dpy)
- eprint("dwm: cannot open display\n");
-
- 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");
-
- XSetErrorHandler(NULL);
- xerrorxlib = XSetErrorHandler(xerror);
-
- /* 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);
-
- grabkeys();
- initrregs();
-
- for(ntags = 0; tags[ntags]; ntags++);
-
- /* style */
- dc.bg = getcolor(BGCOLOR);
- dc.fg = getcolor(FGCOLOR);
- dc.border = getcolor(BORDERCOLOR);
- setfont(FONT);
-
- sx = sy = 0;
- sw = DisplayWidth(dpy, screen);
- sh = DisplayHeight(dpy, screen);
- mw = (sw * MASTERW) / 100;
-
- wa.override_redirect = 1;
- wa.background_pixmap = ParentRelative;
- wa.event_mask = ButtonPressMask | ExposureMask;
-
- bx = by = 0;
- bw = sw;
- dc.h = bh = dc.font.height + 4;
- barwin = XCreateWindow(dpy, root, bx, by, bw, bh, 0, DefaultDepth(dpy, screen),
- CopyFromParent, DefaultVisual(dpy, screen),
- CWOverrideRedirect | CWBackPixmap | CWEventMask, &wa);
- XDefineCursor(dpy, barwin, cursor[CurNormal]);
- XMapRaised(dpy, barwin);
-
- dc.drawable = XCreatePixmap(dpy, root, sw, bh, DefaultDepth(dpy, screen));
- dc.gc = XCreateGC(dpy, root, 0, 0);
-
- strcpy(stext, "dwm-"VERSION);
- drawstatus();
-
- issel = XQueryPointer(dpy, root, &w, &w, &i, &i, &i, &i, &mask);
-
- wa.event_mask = SubstructureRedirectMask | EnterWindowMask | LeaveWindowMask;
- wa.cursor = cursor[CurNormal];
- XChangeWindowAttributes(dpy, root, CWEventMask | CWCursor, &wa);
-
- scan();
-
- /* main event loop, also reads status text from stdin */
- XSync(dpy, False);
- while(running) {
- FD_ZERO(&rd);
- if(readin)
- FD_SET(STDIN_FILENO, &rd);
- FD_SET(ConnectionNumber(dpy), &rd);
-
- i = select(ConnectionNumber(dpy) + 1, &rd, 0, 0, 0);
- if(i == -1 && errno == EINTR)
- continue;
- if(i < 0)
- eprint("select failed\n");
- else if(i > 0) {
- if(FD_ISSET(ConnectionNumber(dpy), &rd)) {
- while(XPending(dpy)) {
- XNextEvent(dpy, &ev);
- if(handler[ev.type])
- (handler[ev.type])(&ev); /* call handler */
- }
- }
- if(readin && FD_ISSET(STDIN_FILENO, &rd)) {
- readin = NULL != fgets(stext, sizeof(stext), stdin);
- if(readin)
- stext[strlen(stext) - 1] = 0;
- else
- strcpy(stext, "broken pipe");
- drawstatus();
- }
- }
- }
-
- cleanup();
- XCloseDisplay(dpy);
-
- return 0;
- }
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