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Diffstat (limited to 'main.c')
| -rw-r--r-- | main.c | 274 |
1 files changed, 274 insertions, 0 deletions
@@ -0,0 +1,274 @@ +/* + * (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 "dwm.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 */ + dc.bg = initcolor(BGCOLOR); + dc.fg = initcolor(FGCOLOR); + dc.border = initcolor(BORDERCOLOR); + initfont(FONT); + + th = dc.font.height + 4; + + 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; +} |