text: /* See LICENSE file for copyright and license details.
   *
   * dynamic window manager is designed like any other X client as well. It is
   * driven through handling X events. In contrast to other X clients, a window
   * manager selects for SubstructureRedirectMask on the root window, to receive
   * events about window (dis-)appearance. Only one X connection at a time is
   * allowed to select for this event mask.
   *
   * The event handlers of dwm are organized in an array which is accessed
   * whenever a new event has been fetched. This allows event dispatching
   * in O(1) time.
   *
   * Each child of the root window is called a client, except windows which have
   * set the override_redirect flag. Clients are organized in a linked client
   * list on each monitor, the focus history is remembered through a stack list
   * on each monitor. Each client contains a bit array to indicate the tags of a
   * client.
   *
   * Keys and tagging rules are organized as arrays and defined in config.h.
   *
   * To understand everything else, start reading main().
   */
  #include <errno.h>
  #include <locale.h>
  #include <signal.h>
  #include <stdarg.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <unistd.h>
  #include <sys/types.h>
  #include <sys/wait.h>
  #include <X11/cursorfont.h>
  #include <X11/keysym.h>
  #include <X11/Xatom.h>
  #include <X11/Xlib.h>
  #include <X11/Xproto.h>
  #include <X11/Xutil.h>
  #ifdef XINERAMA
  #include <X11/extensions/Xinerama.h>
  #endif /* XINERAMA */
  #include <X11/Xft/Xft.h>
  
  #include "drw.h"
  #include "util.h"
  
  
  #include <pango/pango.h>
  
  
  /* macros */
  #define Button6                 6
  #define Button7                 7
  #define Button8                 8
  #define Button9                 9
  #define NUMTAGS                 9
  #define BARRULES                20
  #define BUTTONMASK              (ButtonPressMask|ButtonReleaseMask)
  #define CLEANMASK(mask)         (mask & ~(numlockmask|LockMask) & (ShiftMask|ControlMask|Mod1Mask|Mod2Mask|Mod3Mask|Mod4Mask|Mod5Mask))
  #define INTERSECT(x,y,w,h,m)    (MAX(0, MIN((x)+(w),(m)->wx+(m)->ww) - MAX((x),(m)->wx)) \
                                 * MAX(0, MIN((y)+(h),(m)->wy+(m)->wh) - MAX((y),(m)->wy)))
  #define ISVISIBLE(C)            ((C->tags & C->mon->tagset[C->mon->seltags]) || C->issticky)
  #define LENGTH(X)               (sizeof X / sizeof X[0])
  #define MOUSEMASK               (BUTTONMASK|PointerMotionMask)
  #define WIDTH(X)                ((X)->w + 2 * (X)->bw)
  #define HEIGHT(X)               ((X)->h + 2 * (X)->bw)
  #define WTYPE                   "_NET_WM_WINDOW_TYPE_"
  #define TOTALTAGS               (NUMTAGS + LENGTH(scratchpads))
  #define TAGMASK                 ((1 << TOTALTAGS) - 1)
  #define SPTAG(i)                ((1 << NUMTAGS) << (i))
  #define SPTAGMASK               (((1 << LENGTH(scratchpads))-1) << NUMTAGS)
  #define TEXTWM(X)               (drw_fontset_getwidth(drw, (X), True) + lrpad)
  #define TEXTW(X)                (drw_fontset_getwidth(drw, (X), False) + lrpad)
  #define HIDDEN(C)               ((getstate(C->win) == IconicState))
  
  /* enums */
  enum {
  	CurIronCross,
  	CurNormal,
  	CurResize,
  	CurMove,
  	CurLast
  }; /* cursor */
  
  enum {
  	SchemeNorm,
  	SchemeSel,
  	SchemeTitleNorm,
  	SchemeTitleSel,
  	SchemeTagsNorm,
  	SchemeTagsSel,
  	SchemeHid,
  	SchemeUrg,
  }; /* color schemes */
  
  enum {
  	NetSupported, NetWMName, NetWMState, NetWMCheck,
  	NetWMFullscreen, NetActiveWindow, NetWMWindowType,
  	NetDesktopNames, NetDesktopViewport, NetNumberOfDesktops, NetCurrentDesktop,
  	NetClientList,
  	NetLast
  }; /* EWMH atoms */
  
  enum {
  	WMProtocols,
  	WMDelete,
  	WMState,
  	WMTakeFocus,
  	WMWindowRole,
  	WMLast
  }; /* default atoms */
  
  enum {
  	ClkButton,
  	ClkTagBar,
  	ClkLtSymbol,
  	ClkStatusText,
  	ClkWinTitle,
  	ClkClientWin,
  	ClkRootWin,
  	ClkLast
  }; /* clicks */
  
  enum {
  	BAR_ALIGN_LEFT,
  	BAR_ALIGN_CENTER,
  	BAR_ALIGN_RIGHT,
  	BAR_ALIGN_LEFT_LEFT,
  	BAR_ALIGN_LEFT_RIGHT,
  	BAR_ALIGN_LEFT_CENTER,
  	BAR_ALIGN_NONE,
  	BAR_ALIGN_RIGHT_LEFT,
  	BAR_ALIGN_RIGHT_RIGHT,
  	BAR_ALIGN_RIGHT_CENTER,
  	BAR_ALIGN_LAST
  }; /* bar alignment */
  
  
  typedef union {
  	int i;
  	unsigned int ui;
  	float f;
  	const void *v;
  } Arg;
  
  typedef struct Monitor Monitor;
  typedef struct Bar Bar;
  struct Bar {
  	Window win;
  	Monitor *mon;
  	Bar *next;
  	int idx;
  	int showbar;
  	int topbar;
  	int external;
  	int borderpx;
  	int borderscheme;
  	int bx, by, bw, bh; /* bar geometry */
  	int w[BARRULES]; // width, array length == barrules, then use r index for lookup purposes
  	int x[BARRULES]; // x position, array length == ^
  };
  
  typedef struct {
  	int x;
  	int y;
  	int h;
  	int w;
  } BarArg;
  
  typedef struct {
  	int monitor;
  	int bar;
  	int alignment; // see bar alignment enum
  	int (*widthfunc)(Bar *bar, BarArg *a);
  	int (*drawfunc)(Bar *bar, BarArg *a);
  	int (*clickfunc)(Bar *bar, Arg *arg, BarArg *a);
  	char *name; // for debugging
  	int x, w; // position, width for internal use
  } BarRule;
  
  typedef struct {
  	unsigned int click;
  	unsigned int mask;
  	unsigned int button;
  	void (*func)(const Arg *arg);
  	const Arg arg;
  } Button;
  
  typedef struct Client Client;
  struct Client {
  	char name[256];
  	float mina, maxa;
  	float cfact;
  	int x, y, w, h;
  	int sfx, sfy, sfw, sfh; /* stored float geometry, used on mode revert */
  	int oldx, oldy, oldw, oldh;
  	int basew, baseh, incw, inch, maxw, maxh, minw, minh;
  	int bw, oldbw;
  	unsigned int tags;
  	int isfixed, isfloating, isurgent, neverfocus, oldstate, isfullscreen;
  	int beingmoved;
  	int isterminal, noswallow;
  	pid_t pid;
  	int issteam;
  	int issticky;
  	Client *next;
  	Client *snext;
  	Client *swallowing;
  	Monitor *mon;
  	Window win;
  };
  
  typedef struct {
  	unsigned int mod;
  	KeySym keysym;
  	void (*func)(const Arg *);
  	const Arg arg;
  } Key;
  
  typedef struct {
  	int nmaster;
  	int nstack;
  	int layout;
  	int masteraxis; // master stack area
  	int stack1axis; // primary stack area
  	int stack2axis; // secondary stack area, e.g. centered master
  	void (*symbolfunc)(Monitor *, unsigned int);
  } LayoutPreset;
  
  typedef struct {
  	const char *symbol;
  	void (*arrange)(Monitor *);
  	LayoutPreset preset;
  } Layout;
  
  
  typedef struct Pertag Pertag;
  struct Monitor {
  	int index;
  	char ltsymbol[16];
  	float mfact;
  	int ltaxis[4];
  	int nstack;
  	int nmaster;
  	int num;
  	int mx, my, mw, mh;   /* screen size */
  	int wx, wy, ww, wh;   /* window area  */
  	int gappih;           /* horizontal gap between windows */
  	int gappiv;           /* vertical gap between windows */
  	int gappoh;           /* horizontal outer gaps */
  	int gappov;           /* vertical outer gaps */
  	unsigned int seltags;
  	unsigned int sellt;
  	unsigned int tagset[2];
  	int showbar;
  	Client *clients;
  	Client *sel;
  	Client *stack;
  	Monitor *next;
  	Bar *bar;
  	const Layout *lt[2];
  	Pertag *pertag;
  };
  
  typedef struct {
  	const char *class;
  	const char *role;
  	const char *instance;
  	const char *title;
  	const char *wintype;
  	unsigned int tags;
  	int isfloating;
  	int isterminal;
  	int noswallow;
  	int monitor;
  } Rule;
  
  #define RULE(...) { .monitor = -1, ##__VA_ARGS__ },
  
  /* Cross patch compatibility rule macro helper macros */
  #define FLOATING , .isfloating = 1
  #define CENTERED
  #define PERMANENT
  #define FAKEFULLSCREEN
  #define NOSWALLOW , .noswallow = 1
  #define TERMINAL , .isterminal = 1
  #define SWITCHTAG
  
  typedef struct {
  	int monitor;
  	int tag;
  	int layout;
  	float mfact;
  	int nmaster;
  	int showbar;
  	int topbar;
  } MonitorRule;
  
  /* function declarations */
  static void applyrules(Client *c);
  static int applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact);
  static void arrange(Monitor *m);
  static void arrangemon(Monitor *m);
  static void attach(Client *c);
  static void attachstack(Client *c);
  static void buttonpress(XEvent *e);
  static void checkotherwm(void);
  static void cleanup(void);
  static void cleanupmon(Monitor *mon);
  static void clientmessage(XEvent *e);
  static void configure(Client *c);
  static void configurenotify(XEvent *e);
  static void configurerequest(XEvent *e);
  static Monitor *createmon(void);
  static void destroynotify(XEvent *e);
  static void detach(Client *c);
  static void detachstack(Client *c);
  static Monitor *dirtomon(int dir);
  static void drawbar(Monitor *m);
  static void drawbars(void);
  static void drawbarwin(Bar *bar);
  static void enternotify(XEvent *e);
  static void expose(XEvent *e);
  static void focus(Client *c);
  static void focusin(XEvent *e);
  static void focusmon(const Arg *arg);
  static void focusstack(const Arg *arg);
  static Atom getatomprop(Client *c, Atom prop);
  static int getrootptr(int *x, int *y);
  static long getstate(Window w);
  static int gettextprop(Window w, Atom atom, char *text, unsigned int size);
  static void grabbuttons(Client *c, int focused);
  static void grabkeys(void);
  static void incnmaster(const Arg *arg);
  static void keypress(XEvent *e);
  static void killclient(const Arg *arg);
  static void manage(Window w, XWindowAttributes *wa);
  static void mappingnotify(XEvent *e);
  static void maprequest(XEvent *e);
  static void motionnotify(XEvent *e);
  static void movemouse(const Arg *arg);
  static Client *nexttiled(Client *c);
  static void propertynotify(XEvent *e);
  static void quit(const Arg *arg);
  static Monitor *recttomon(int x, int y, int w, int h);
  static void resize(Client *c, int x, int y, int w, int h, int interact);
  static void resizeclient(Client *c, int x, int y, int w, int h);
  static void resizemouse(const Arg *arg);
  static void restack(Monitor *m);
  static void run(void);
  static void scan(void);
  static int sendevent(Client *c, Atom proto);
  static void sendmon(Client *c, Monitor *m);
  static void setclientstate(Client *c, long state);
  static void setfocus(Client *c);
  static void setfullscreen(Client *c, int fullscreen);
  static void setlayout(const Arg *arg);
  static void setmfact(const Arg *arg);
  static void setup(void);
  static void seturgent(Client *c, int urg);
  static void showhide(Client *c);
  static void sigchld(int unused);
  static void spawn(const Arg *arg);
  static pid_t spawncmd(const Arg *arg);
  static void tag(const Arg *arg);
  static void tagmon(const Arg *arg);
  static void togglebar(const Arg *arg);
  static void togglefloating(const Arg *arg);
  static void toggletag(const Arg *arg);
  static void toggleview(const Arg *arg);
  static void unfocus(Client *c, int setfocus, Client *nextfocus);
  static void unmanage(Client *c, int destroyed);
  static void unmapnotify(XEvent *e);
  static void updatebarpos(Monitor *m);
  static void updatebars(void);
  static void updateclientlist(void);
  static int updategeom(void);
  static void updatenumlockmask(void);
  static void updatesizehints(Client *c);
  static void updatestatus(void);
  static void updatetitle(Client *c);
  static void updatewmhints(Client *c);
  static void view(const Arg *arg);
  static Client *wintoclient(Window w);
  static Monitor *wintomon(Window w);
  static int xerror(Display *dpy, XErrorEvent *ee);
  static int xerrordummy(Display *dpy, XErrorEvent *ee);
  static int xerrorstart(Display *dpy, XErrorEvent *ee);
  static void zoom(const Arg *arg);
  
  /* bar functions */
  
  #include "patch/include.h"
  
  /* variables */
  static const char broken[] = "broken";
  static char stext[1024];
  static char rawstext[512];
  
  static int screen;
  static int sw, sh;           /* X display screen geometry width, height */
  static int bh;               /* bar geometry */
  static int lrpad;            /* sum of left and right padding for text */
  /* Some clients (e.g. alacritty) helpfully send configure requests with a new size or position
   * when they detect that they have been moved to another monitor. This can cause visual glitches
   * when moving (or resizing) client windows from one monitor to another. This variable is used
   * internally to ignore such configure requests while movemouse or resizemouse are being used. */
  static int ignoreconfigurerequests = 0;
  static int (*xerrorxlib)(Display *, XErrorEvent *);
  static unsigned int numlockmask = 0;
  static int riodimensions[4] = { -1, -1, -1, -1 };
  static pid_t riopid = 0;
  static void (*handler[LASTEvent]) (XEvent *) = {
  	[ButtonPress] = buttonpress,
  	[ClientMessage] = clientmessage,
  	[ConfigureRequest] = configurerequest,
  	[ConfigureNotify] = configurenotify,
  	[DestroyNotify] = destroynotify,
  	[EnterNotify] = enternotify,
  	[Expose] = expose,
  	[FocusIn] = focusin,
  	[KeyPress] = keypress,
  	[MappingNotify] = mappingnotify,
  	[MapRequest] = maprequest,
  	[MotionNotify] = motionnotify,
  	[PropertyNotify] = propertynotify,
  	[UnmapNotify] = unmapnotify
  };
  static Atom wmatom[WMLast], netatom[NetLast];
  static int running = 1;
  static Cur *cursor[CurLast];
  static Clr **scheme;
  static Display *dpy;
  static Drw *drw;
  static Monitor *mons, *selmon;
  static Window root, wmcheckwin;
  
  /* configuration, allows nested code to access above variables */
  #include "config.h"
  
  #include "patch/include.c"
  
  /* compile-time check if all tags fit into an unsigned int bit array. */
  struct NumTags { char limitexceeded[NUMTAGS > 31 ? -1 : 1]; };
  
  /* function implementations */
  void
  applyrules(Client *c)
  {
  	const char *class, *instance;
  	Atom wintype;
  	char role[64];
  	unsigned int i;
  	const Rule *r;
  	Monitor *m;
  	XClassHint ch = { NULL, NULL };
  
  	/* rule matching */
  	c->noswallow = -1;
  	c->isfloating = 0;
  	c->tags = 0;
  	XGetClassHint(dpy, c->win, &ch);
  	class    = ch.res_class ? ch.res_class : broken;
  	instance = ch.res_name  ? ch.res_name  : broken;
  	wintype  = getatomprop(c, netatom[NetWMWindowType]);
  	gettextprop(c->win, wmatom[WMWindowRole], role, sizeof(role));
  
  	if (strstr(class, "Steam") || strstr(class, "steam_app_"))
  		c->issteam = 1;
  
  	for (i = 0; i < LENGTH(rules); i++) {
  		r = &rules[i];
  		if ((!r->title || strstr(c->name, r->title))
  		&& (!r->class || strstr(class, r->class))
  		&& (!r->role || strstr(role, r->role))
  		&& (!r->instance || strstr(instance, r->instance))
  		&& (!r->wintype || wintype == XInternAtom(dpy, r->wintype, False)))
  		{
  			c->isterminal = r->isterminal;
  			c->noswallow = r->noswallow;
  			c->isfloating = r->isfloating;
  			c->tags |= r->tags;
  			if ((r->tags & SPTAGMASK) && r->isfloating) {
  				c->x = c->mon->wx + (c->mon->ww / 2 - WIDTH(c) / 2);
  				c->y = c->mon->wy + (c->mon->wh / 2 - HEIGHT(c) / 2);
  			}
  			for (m = mons; m && m->num != r->monitor; m = m->next);
  			if (m)
  				c->mon = m;
  
  		}
  	}
  	if (ch.res_class)
  		XFree(ch.res_class);
  	if (ch.res_name)
  		XFree(ch.res_name);
  	c->tags = c->tags & TAGMASK ? c->tags & TAGMASK : (c->mon->tagset[c->mon->seltags] & ~SPTAGMASK);
  }
  
  int
  applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact)
  {
  	int baseismin;
  	Monitor *m = c->mon;
  
  	/* set minimum possible */
  	*w = MAX(1, *w);
  	*h = MAX(1, *h);
  	if (interact) {
  		if (*x > sw)
  			*x = sw - WIDTH(c);
  		if (*y > sh)
  			*y = sh - HEIGHT(c);
  		if (*x + *w + 2 * c->bw < 0)
  			*x = 0;
  		if (*y + *h + 2 * c->bw < 0)
  			*y = 0;
  	} else {
  		if (*x >= m->wx + m->ww)
  			*x = m->wx + m->ww - WIDTH(c);
  		if (*y >= m->wy + m->wh)
  			*y = m->wy + m->wh - HEIGHT(c);
  		if (*x + *w + 2 * c->bw <= m->wx)
  			*x = m->wx;
  		if (*y + *h + 2 * c->bw <= m->wy)
  			*y = m->wy;
  	}
  	if (*h < bh)
  		*h = bh;
  	if (*w < bh)
  		*w = bh;
  	if (resizehints || c->isfloating || !c->mon->lt[c->mon->sellt]->arrange) {
  		/* see last two sentences in ICCCM 4.1.2.3 */
  		baseismin = c->basew == c->minw && c->baseh == c->minh;
  		if (!baseismin) { /* temporarily remove base dimensions */
  			*w -= c->basew;
  			*h -= c->baseh;
  		}
  		/* adjust for aspect limits */
  		if (c->mina > 0 && c->maxa > 0) {
  			if (c->maxa < (float)*w / *h)
  				*w = *h * c->maxa + 0.5;
  			else if (c->mina < (float)*h / *w)
  				*h = *w * c->mina + 0.5;
  		}
  		if (baseismin) { /* increment calculation requires this */
  			*w -= c->basew;
  			*h -= c->baseh;
  		}
  		/* adjust for increment value */
  		if (c->incw)
  			*w -= *w % c->incw;
  		if (c->inch)
  			*h -= *h % c->inch;
  		/* restore base dimensions */
  		*w = MAX(*w + c->basew, c->minw);
  		*h = MAX(*h + c->baseh, c->minh);
  		if (c->maxw)
  			*w = MIN(*w, c->maxw);
  		if (c->maxh)
  			*h = MIN(*h, c->maxh);
  	}
  	return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
  }
  
  void
  arrange(Monitor *m)
  {
  	if (m)
  		showhide(m->stack);
  	else for (m = mons; m; m = m->next)
  		showhide(m->stack);
  	if (m) {
  		arrangemon(m);
  		restack(m);
  	} else for (m = mons; m; m = m->next)
  		arrangemon(m);
  }
  
  void
  arrangemon(Monitor *m)
  {
  	strncpy(m->ltsymbol, m->lt[m->sellt]->symbol, sizeof m->ltsymbol);
  	if (m->lt[m->sellt]->arrange)
  		m->lt[m->sellt]->arrange(m);
  }
  
  void
  attach(Client *c)
  {
  	c->next = c->mon->clients;
  	c->mon->clients = c;
  }
  
  void
  attachstack(Client *c)
  {
  	c->snext = c->mon->stack;
  	c->mon->stack = c;
  }
  
  void
  buttonpress(XEvent *e)
  {
  	int click, i, r;
  	Arg arg = {0};
  	Client *c;
  	Monitor *m;
  	Bar *bar;
  	XButtonPressedEvent *ev = &e->xbutton;
  	const BarRule *br;
  	BarArg carg = { 0, 0, 0, 0 };
  	click = ClkRootWin;
  	/* focus monitor if necessary */
  	if ((m = wintomon(ev->window)) && m != selmon
  	) {
  		unfocus(selmon->sel, 1, NULL);
  		selmon = m;
  		focus(NULL);
  	}
  
  	for (bar = selmon->bar; bar; bar = bar->next) {
  		if (ev->window == bar->win) {
  			for (r = 0; r < LENGTH(barrules); r++) {
  				br = &barrules[r];
  				if (br->bar != bar->idx || (br->monitor == 'A' && m != selmon) || br->clickfunc == NULL)
  					continue;
  				if (br->monitor != 'A' && br->monitor != -1 && br->monitor != bar->mon->index)
  					continue;
  				if (bar->x[r] <= ev->x && ev->x <= bar->x[r] + bar->w[r]) {
  					carg.x = ev->x - bar->x[r];
  					carg.y = ev->y - bar->borderpx;
  					carg.w = bar->w[r];
  					carg.h = bar->bh - 2 * bar->borderpx;
  					click = br->clickfunc(bar, &arg, &carg);
  					if (click < 0)
  						return;
  					break;
  				}
  			}
  			break;
  		}
  	}
  
  
  	if (click == ClkRootWin && (c = wintoclient(ev->window))) {
  		focus(c);
  		restack(selmon);
  		XAllowEvents(dpy, ReplayPointer, CurrentTime);
  		click = ClkClientWin;
  	}
  
  	for (i = 0; i < LENGTH(buttons); i++) {
  		if (click == buttons[i].click && buttons[i].func && buttons[i].button == ev->button
  				&& CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state)) {
  			buttons[i].func(
  				(
  					click == ClkTagBar
  					|| click == ClkWinTitle
  				) && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg
  			);
  		}
  	}
  }
  
  void
  checkotherwm(void)
  {
  	xerrorxlib = XSetErrorHandler(xerrorstart);
  	/* this causes an error if some other window manager is running */
  	XSelectInput(dpy, DefaultRootWindow(dpy), SubstructureRedirectMask);
  	XSync(dpy, False);
  	XSetErrorHandler(xerror);
  	XSync(dpy, False);
  }
  
  void
  cleanup(void)
  {
  	Arg a = {.ui = ~0};
  	Layout foo = { "", NULL };
  	Monitor *m;
  	size_t i;
  	view(&a);
  	selmon->lt[selmon->sellt] = &foo;
  	for (m = mons; m; m = m->next)
  		while (m->stack)
  			unmanage(m->stack, 0);
  	XUngrabKey(dpy, AnyKey, AnyModifier, root);
  	while (mons)
  		cleanupmon(mons);
  	for (i = 0; i < CurLast; i++)
  		drw_cur_free(drw, cursor[i]);
  	for (i = 0; i < LENGTH(colors); i++)
  		free(scheme[i]);
  	free(scheme);
  	XDestroyWindow(dpy, wmcheckwin);
  	drw_free(drw);
  	XSync(dpy, False);
  	XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
  	XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
  
  }
  
  void
  cleanupmon(Monitor *mon)
  {
  	Monitor *m;
  	Bar *bar;
  
  	if (mon == mons)
  		mons = mons->next;
  	else {
  		for (m = mons; m && m->next != mon; m = m->next);
  		m->next = mon->next;
  	}
  	for (bar = mon->bar; bar; bar = mon->bar) {
  		if (!bar->external) {
  			XUnmapWindow(dpy, bar->win);
  			XDestroyWindow(dpy, bar->win);
  		}
  		mon->bar = bar->next;
  		free(bar);
  	}
  	free(mon);
  }
  
  void
  clientmessage(XEvent *e)
  {
  	XClientMessageEvent *cme = &e->xclient;
  	Client *c = wintoclient(cme->window);
  	unsigned int i;
  
  
  	if (!c)
  		return;
  	if (cme->message_type == netatom[NetWMState]) {
  		if (cme->data.l[1] == netatom[NetWMFullscreen]
  		|| cme->data.l[2] == netatom[NetWMFullscreen]) {
  			setfullscreen(c, (cme->data.l[0] == 1 /* _NET_WM_STATE_ADD    */
  				|| (cme->data.l[0] == 2 /* _NET_WM_STATE_TOGGLE */
  				&& !c->isfullscreen
  			)));
  		}
  	} else if (cme->message_type == netatom[NetActiveWindow]) {
  		if (c->tags & c->mon->tagset[c->mon->seltags])
  			focus(c);
  		else {
  			for (i = 0; i < NUMTAGS && !((1 << i) & c->tags); i++);
  			if (i < NUMTAGS) {
  				if (c != selmon->sel)
  					unfocus(selmon->sel, 0, NULL);
  				selmon = c->mon;
  				if (((1 << i) & TAGMASK) != selmon->tagset[selmon->seltags])
  					view(&((Arg) { .ui = 1 << i }));
  				focus(c);
  				restack(selmon);
  			}
  		}
  	}
  }
  
  void
  configure(Client *c)
  {
  	XConfigureEvent ce;
  
  	ce.type = ConfigureNotify;
  	ce.display = dpy;
  	ce.event = c->win;
  	ce.window = c->win;
  	ce.x = c->x;
  	ce.y = c->y;
  	ce.width = c->w;
  	ce.height = c->h;
  	ce.border_width = c->bw;
  	ce.above = None;
  	ce.override_redirect = False;
  	XSendEvent(dpy, c->win, False, StructureNotifyMask, (XEvent *)&ce);
  }
  
  void
  configurenotify(XEvent *e)
  {
  	Monitor *m;
  	Bar *bar;
  	Client *c;
  	XConfigureEvent *ev = &e->xconfigure;
  	int dirty;
  	/* TODO: updategeom handling sucks, needs to be simplified */
  	if (ev->window == root) {
  		dirty = (sw != ev->width || sh != ev->height);
  		sw = ev->width;
  		sh = ev->height;
  		if (updategeom() || dirty) {
  			drw_resize(drw, sw, sh);
  			updatebars();
  			for (m = mons; m; m = m->next) {
  				for (c = m->clients; c; c = c->next)
  					if (c->isfullscreen)
  						resizeclient(c, m->mx, m->my, m->mw, m->mh);
  				for (bar = m->bar; bar; bar = bar->next)
  					XMoveResizeWindow(dpy, bar->win, bar->bx, bar->by, bar->bw, bar->bh);
  			}
  			focus(NULL);
  			arrange(NULL);
  		}
  	}
  }
  
  void
  configurerequest(XEvent *e)
  {
  	Client *c;
  	Monitor *m;
  	XConfigureRequestEvent *ev = &e->xconfigurerequest;
  	XWindowChanges wc;
  
  	if (ignoreconfigurerequests)
  		return;
  
  	if ((c = wintoclient(ev->window))) {
  		if (ev->value_mask & CWBorderWidth)
  			c->bw = ev->border_width;
  		else if (c->isfloating || !selmon->lt[selmon->sellt]->arrange) {
  			m = c->mon;
  			if (!c->issteam) {
  				if (ev->value_mask & CWX) {
  					c->oldx = c->x;
  					c->x = m->mx + ev->x;
  				}
  				if (ev->value_mask & CWY) {
  					c->oldy = c->y;
  					c->y = m->my + ev->y;
  				}
  			}
  			if (ev->value_mask & CWWidth) {
  				c->oldw = c->w;
  				c->w = ev->width;
  			}
  			if (ev->value_mask & CWHeight) {
  				c->oldh = c->h;
  				c->h = ev->height;
  			}
  			if ((c->x + c->w) > m->mx + m->mw && c->isfloating)
  				c->x = m->mx + (m->mw / 2 - WIDTH(c) / 2);  /* center in x direction */
  			if ((c->y + c->h) > m->my + m->mh && c->isfloating)
  				c->y = m->my + (m->mh / 2 - HEIGHT(c) / 2); /* center in y direction */
  			if ((ev->value_mask & (CWX|CWY)) && !(ev->value_mask & (CWWidth|CWHeight)))
  				configure(c);
  			if (ISVISIBLE(c))
  				XMoveResizeWindow(dpy, c->win, c->x, c->y, c->w, c->h);
  		} else
  			configure(c);
  	} else {
  		wc.x = ev->x;
  		wc.y = ev->y;
  		wc.width = ev->width;
  		wc.height = ev->height;
  		wc.border_width = ev->border_width;
  		wc.sibling = ev->above;
  		wc.stack_mode = ev->detail;
  		XConfigureWindow(dpy, ev->window, ev->value_mask, &wc);
  	}
  	XSync(dpy, False);
  }
  
  Monitor *
  createmon(void)
  {
  	Monitor *m, *mon;
  	int i, n, mi, max_bars = 2, istopbar = topbar;
  	int layout;
  
  	const BarRule *br;
  	Bar *bar;
  	int j;
  	const MonitorRule *mr;
  
  	m = ecalloc(1, sizeof(Monitor));
  	m->tagset[0] = m->tagset[1] = 1;
  	m->mfact = mfact;
  	m->nmaster = nmaster;
  	m->nstack = nstack;
  	m->showbar = showbar;
  	m->gappih = gappih;
  	m->gappiv = gappiv;
  	m->gappoh = gappoh;
  	m->gappov = gappov;
  	for (mi = 0, mon = mons; mon; mon = mon->next, mi++); // monitor index
  	m->index = mi;
  	for (j = 0; j < LENGTH(monrules); j++) {
  		mr = &monrules[j];
  		if ((mr->monitor == -1 || mr->monitor == mi)
  				&& (mr->tag <= 0 || (m->tagset[0] & (1 << (mr->tag - 1))))
  		) {
  			layout = MAX(mr->layout, 0);
  			layout = MIN(layout, LENGTH(layouts) - 1);
  			m->lt[0] = &layouts[layout];
  			m->lt[1] = &layouts[1 % LENGTH(layouts)];
  			strncpy(m->ltsymbol, layouts[layout].symbol, sizeof m->ltsymbol);
  
  			if (mr->mfact > -1)
  				m->mfact = mr->mfact;
  			if (mr->nmaster > -1)
  				m->nmaster = mr->nmaster;
  			if (mr->showbar > -1)
  				m->showbar = mr->showbar;
  			if (mr->topbar > -1)
  				istopbar = mr->topbar;
  			break;
  		}
  	}
  
  	/* Derive the number of bars for this monitor based on bar rules */
  	for (n = -1, i = 0; i < LENGTH(barrules); i++) {
  		br = &barrules[i];
  		if (br->monitor == 'A' || br->monitor == -1 || br->monitor == mi)
  			n = MAX(br->bar, n);
  	}
  
  	for (i = 0; i <= n && i < max_bars; i++) {
  		bar = ecalloc(1, sizeof(Bar));
  		bar->mon = m;
  		bar->idx = i;
  		bar->next = m->bar;
  		bar->topbar = istopbar;
  		m->bar = bar;
  		istopbar = !istopbar;
  		bar->showbar = 1;
  		bar->external = 0;
  		bar->borderpx = 0;
  		bar->bh = bh + bar->borderpx * 2;
  		bar->borderscheme = SchemeNorm;
  	}
  
  	m->ltaxis[LAYOUT] = m->lt[0]->preset.layout;
  	m->ltaxis[MASTER] = m->lt[0]->preset.masteraxis;
  	m->ltaxis[STACK]  = m->lt[0]->preset.stack1axis;
  	m->ltaxis[STACK2] = m->lt[0]->preset.stack2axis;
  
  	if (!(m->pertag = (Pertag *)calloc(1, sizeof(Pertag))))
  		die("fatal: could not malloc() %u bytes\n", sizeof(Pertag));
  	m->pertag->curtag = m->pertag->prevtag = 1;
  	for (i = 0; i <= NUMTAGS; i++) {
  		m->pertag->nstacks[i] = m->nstack;
  
  
  		m->pertag->prevzooms[i] = NULL;
  
  		/* init layouts */
  		for (j = 0; j < LENGTH(monrules); j++) {
  			mr = &monrules[j];
  			if ((mr->monitor == -1 || mr->monitor == mi) && (mr->tag == -1 || mr->tag == i)) {
  				layout = MAX(mr->layout, 0);
  				layout = MIN(layout, LENGTH(layouts) - 1);
  				m->pertag->ltidxs[i][0] = &layouts[layout];
  				m->pertag->ltidxs[i][1] = m->lt[0];
  				m->pertag->nmasters[i] = (mr->nmaster > -1 ? mr->nmaster : m->nmaster);
  				m->pertag->mfacts[i] = (mr->mfact > -1 ? mr->mfact : m->mfact);
  				m->pertag->showbars[i] = (mr->showbar > -1 ? mr->showbar : m->showbar);
  				m->pertag->ltaxis[i][LAYOUT] = m->pertag->ltidxs[i][0]->preset.layout;
  				m->pertag->ltaxis[i][MASTER] = m->pertag->ltidxs[i][0]->preset.masteraxis;
  				m->pertag->ltaxis[i][STACK]  = m->pertag->ltidxs[i][0]->preset.stack1axis;
  				m->pertag->ltaxis[i][STACK2] = m->pertag->ltidxs[i][0]->preset.stack2axis;
  				break;
  			}
  		}
  		m->pertag->sellts[i] = m->sellt;
  
  		m->pertag->enablegaps[i] = 1;
  	}
  	return m;
  }
  
  void
  destroynotify(XEvent *e)
  {
  	Client *c;
  	XDestroyWindowEvent *ev = &e->xdestroywindow;
  
  	if ((c = wintoclient(ev->window)))
  		unmanage(c, 1);
  	else if ((c = swallowingclient(ev->window)))
  		unmanage(c->swallowing, 1);
  }
  
  void
  detach(Client *c)
  {
  	Client **tc;
  
  	for (tc = &c->mon->clients; *tc && *tc != c; tc = &(*tc)->next);
  	*tc = c->next;
  }
  
  void
  detachstack(Client *c)
  {
  	Client **tc, *t;
  
  	for (tc = &c->mon->stack; *tc && *tc != c; tc = &(*tc)->snext);
  	*tc = c->snext;
  
  	if (c == c->mon->sel) {
  		for (t = c->mon->stack; t && !ISVISIBLE(t); t = t->snext);
  		c->mon->sel = t;
  	}
  }
  
  Monitor *
  dirtomon(int dir)
  {
  	Monitor *m = NULL;
  
  	if (dir > 0) {
  		if (!(m = selmon->next))
  			m = mons;
  	} else if (selmon == mons)
  		for (m = mons; m->next; m = m->next);
  	else
  		for (m = mons; m->next != selmon; m = m->next);
  	return m;
  }
  
  void
  drawbar(Monitor *m)
  {
  	Bar *bar;
  	for (bar = m->bar; bar; bar = bar->next)
  		drawbarwin(bar);
  }
  
  void
  drawbars(void)
  {
  	Monitor *m;
  	for (m = mons; m; m = m->next)
  		drawbar(m);
  }
  
  void
  drawbarwin(Bar *bar)
  {
  	if (!bar || !bar->win || bar->external)
  		return;
  	int r, w, total_drawn = 0;
  	int rx, lx, rw, lw; // bar size, split between left and right if a center module is added
  	const BarRule *br;
  
  	if (bar->borderpx) {
  		XSetForeground(drw->dpy, drw->gc, scheme[bar->borderscheme][ColBorder].pixel);
  		XFillRectangle(drw->dpy, drw->drawable, drw->gc, 0, 0, bar->bw, bar->bh);
  	}
  
  	BarArg warg = { 0 };
  	BarArg darg  = { 0 };
  	warg.h = bar->bh - 2 * bar->borderpx;
  
  	rw = lw = bar->bw - 2 * bar->borderpx;
  	rx = lx = bar->borderpx;
  
  	drw_setscheme(drw, scheme[SchemeNorm]);
  	drw_rect(drw, lx, bar->borderpx, lw, bar->bh - 2 * bar->borderpx, 1, 1);
  	for (r = 0; r < LENGTH(barrules); r++) {
  		br = &barrules[r];
  		if (br->bar != bar->idx || !br->widthfunc || (br->monitor == 'A' && bar->mon != selmon))
  			continue;
  		if (br->monitor != 'A' && br->monitor != -1 && br->monitor != bar->mon->index)
  			continue;
  		drw_setscheme(drw, scheme[SchemeNorm]);
  		warg.w = (br->alignment < BAR_ALIGN_RIGHT_LEFT ? lw : rw);
  
  		w = br->widthfunc(bar, &warg);
  		w = MIN(warg.w, w);
  
  		if (lw <= 0) { // if left is exhausted then switch to right side, and vice versa
  			lw = rw;
  			lx = rx;
  		} else if (rw <= 0) {
  			rw = lw;
  			rx = lx;
  		}
  
  		switch(br->alignment) {
  		default:
  		case BAR_ALIGN_NONE:
  		case BAR_ALIGN_LEFT_LEFT:
  		case BAR_ALIGN_LEFT:
  			bar->x[r] = lx;
  			if (lx == rx) {
  				rx += w;
  				rw -= w;
  			}
  			lx += w;
  			lw -= w;
  			break;
  		case BAR_ALIGN_LEFT_RIGHT:
  		case BAR_ALIGN_RIGHT:
  			bar->x[r] = lx + lw - w;
  			if (lx == rx)
  				rw -= w;
  			lw -= w;
  			break;
  		case BAR_ALIGN_LEFT_CENTER:
  		case BAR_ALIGN_CENTER:
  			bar->x[r] = lx + lw / 2 - w / 2;
  			if (lx == rx) {
  				rw = rx + rw - bar->x[r] - w;
  				rx = bar->x[r] + w;
  			}
  			lw = bar->x[r] - lx;
  			break;
  		case BAR_ALIGN_RIGHT_LEFT:
  			bar->x[r] = rx;
  			if (lx == rx) {
  				lx += w;
  				lw -= w;
  			}
  			rx += w;
  			rw -= w;
  			break;
  		case BAR_ALIGN_RIGHT_RIGHT:
  			bar->x[r] = rx + rw - w;
  			if (lx == rx)
  				lw -= w;
  			rw -= w;
  			break;
  		case BAR_ALIGN_RIGHT_CENTER:
  			bar->x[r] = rx + rw / 2 - w / 2;
  			if (lx == rx) {
  				lw = lx + lw - bar->x[r] + w;
  				lx = bar->x[r] + w;
  			}
  			rw = bar->x[r] - rx;
  			break;
  		}
  		bar->w[r] = w;
  		darg.x = bar->x[r];
  		darg.y = bar->borderpx;
  		darg.h = bar->bh - 2 * bar->borderpx;
  		darg.w = bar->w[r];
  		if (br->drawfunc)
  			total_drawn += br->drawfunc(bar, &darg);
  	}
  
  	if (total_drawn == 0 && bar->showbar) {
  		bar->showbar = 0;
  		updatebarpos(bar->mon);
  		XMoveResizeWindow(dpy, bar->win, bar->bx, bar->by, bar->bw, bar->bh);
  		arrange(bar->mon);
  	}
  	else if (total_drawn > 0 && !bar->showbar) {
  		bar->showbar = 1;
  		updatebarpos(bar->mon);
  		XMoveResizeWindow(dpy, bar->win, bar->bx, bar->by, bar->bw, bar->bh);
  		drw_map(drw, bar->win, 0, 0, bar->bw, bar->bh);
  		arrange(bar->mon);
  	} else
  		drw_map(drw, bar->win, 0, 0, bar->bw, bar->bh);
  }
  
  void
  enternotify(XEvent *e)
  {
  	Client *c;
  	Monitor *m;
  	XCrossingEvent *ev = &e->xcrossing;
  
  	if ((ev->mode != NotifyNormal || ev->detail == NotifyInferior) && ev->window != root)
  		return;
  	c = wintoclient(ev->window);
  	m = c ? c->mon : wintomon(ev->window);
  	if (m != selmon) {
  		unfocus(selmon->sel, 1, c);
  		selmon = m;
  	} else if (!c || c == selmon->sel)
  		return;
  	focus(c);
  }
  
  void
  expose(XEvent *e)
  {
  	Monitor *m;
  	XExposeEvent *ev = &e->xexpose;
  
  	if (ev->count == 0 && (m = wintomon(ev->window))) {
  		drawbar(m);
  	}
  }
  
  void
  focus(Client *c)
  {
  	if (!c || !ISVISIBLE(c))
  		for (c = selmon->stack; c && !ISVISIBLE(c); c = c->snext);
  	if (selmon->sel && selmon->sel != c)
  		unfocus(selmon->sel, 0, c);
  	if (c) {
  		if (c->mon != selmon)
  			selmon = c->mon;
  		if (c->isurgent)
  			seturgent(c, 0);
  		detachstack(c);
  		attachstack(c);
  		grabbuttons(c, 1);
  		if (c->isfloating)
  			XSetWindowBorder(dpy, c->win, scheme[SchemeSel][ColFloat].pixel);
  		else
  			XSetWindowBorder(dpy, c->win, scheme[SchemeSel][ColBorder].pixel);
  		setfocus(c);
  	} else {
  		XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
  		XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
  	}
  	selmon->sel = c;
  	drawbars();
  
  }
  
  /* there are some broken focus acquiring clients needing extra handling */
  void
  focusin(XEvent *e)
  {
  	XFocusChangeEvent *ev = &e->xfocus;
  
  	if (selmon->sel && ev->window != selmon->sel->win)
  		setfocus(selmon->sel);
  }
  
  void
  focusmon(const Arg *arg)
  {
  	Monitor *m;
  
  	if (!mons->next)
  		return;
  	if ((m = dirtomon(arg->i)) == selmon)
  		return;
  	unfocus(selmon->sel, 0, NULL);
  	selmon = m;
  	focus(NULL);
  }
  
  void
  focusstack(const Arg *arg)
  {
  	Client *c = NULL, *i;
  
  	if (!selmon->sel)
  		return;
  	if (arg->i > 0) {
  		for (c = selmon->sel->next; c && (!ISVISIBLE(c) || (arg->i == 1 && HIDDEN(c))); c = c->next);
  		if (!c)
  			for (c = selmon->clients; c && (!ISVISIBLE(c) || (arg->i == 1 && HIDDEN(c))); c = c->next);
  	} else {
  		for (i = selmon->clients; i != selmon->sel; i = i->next)
  			if (ISVISIBLE(i) && !(arg->i == -1 && HIDDEN(i)))
  				c = i;
  		if (!c)
  			for (; i; i = i->next)
  				if (ISVISIBLE(i) && !(arg->i == -1 && HIDDEN(i)))
  					c = i;
  	}
  	if (c) {
  		focus(c);
  		restack(selmon);
  	}
  }
  
  Atom
  getatomprop(Client *c, Atom prop)
  {
  	int di;
  	unsigned long dl;
  	unsigned char *p = NULL;
  	Atom da, atom = None;
  
  	if (XGetWindowProperty(dpy, c->win, prop, 0L, sizeof atom, False, XA_ATOM,
  		&da, &di, &dl, &dl, &p) == Success && p) {
  		atom = *(Atom *)p;
  		XFree(p);
  	}
  	return atom;
  }
  
  int
  getrootptr(int *x, int *y)
  {
  	int di;
  	unsigned int dui;
  	Window dummy;
  
  	return XQueryPointer(dpy, root, &dummy, &dummy, x, y, &di, &di, &dui);
  }
  
  long
  getstate(Window w)
  {
  	int format;
  	long result = -1;
  	unsigned char *p = NULL;
  	unsigned long n, extra;
  	Atom real;
  
  	if (XGetWindowProperty(dpy, w, wmatom[WMState], 0L, 2L, False, wmatom[WMState],
  		&real, &format, &n, &extra, (unsigned char **)&p) != Success)
  		return -1;
  	if (n != 0)
  		result = *p;
  	XFree(p);
  	return result;
  }
  
  int
  gettextprop(Window w, Atom atom, char *text, unsigned int size)
  {
  	char **list = NULL;
  	int n;
  	XTextProperty name;
  
  	if (!text || size == 0)
  		return 0;
  	text[0] = '\0';
  	if (!XGetTextProperty(dpy, w, &name, atom) || !name.nitems)
  		return 0;
  	if (name.encoding == XA_STRING)
  		strncpy(text, (char *)name.value, size - 1);
  	else {
  		if (XmbTextPropertyToTextList(dpy, &name, &list, &n) >= Success && n > 0 && *list) {
  			strncpy(text, *list, size - 1);
  			XFreeStringList(list);
  		}
  	}
  	text[size - 1] = '\0';
  	XFree(name.value);
  	return 1;
  }
  
  void
  grabbuttons(Client *c, int focused)
  {
  	updatenumlockmask();
  	{
  		unsigned int i, j;
  		unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
  		XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
  		if (!focused)
  			XGrabButton(dpy, AnyButton, AnyModifier, c->win, False,
  				BUTTONMASK, GrabModeSync, GrabModeSync, None, None);
  		for (i = 0; i < LENGTH(buttons); i++)
  			if (buttons[i].click == ClkClientWin
  			)
  				for (j = 0; j < LENGTH(modifiers); j++)
  					XGrabButton(dpy, buttons[i].button,
  						buttons[i].mask | modifiers[j],
  						c->win, False, BUTTONMASK,
  						GrabModeAsync, GrabModeSync, None, None);
  	}
  }
  
  void
  grabkeys(void)
  {
  	updatenumlockmask();
  	{
  		unsigned int i, j;
  		unsigned int modifiers[] = { 0, LockMask, numlockmask, numlockmask|LockMask };
  		KeyCode code;
  
  		XUngrabKey(dpy, AnyKey, AnyModifier, root);
  		for (i = 0; i < LENGTH(keys); i++)
  			if ((code = XKeysymToKeycode(dpy, keys[i].keysym)))
  				for (j = 0; j < LENGTH(modifiers); j++)
  					XGrabKey(dpy, code, keys[i].mod | modifiers[j], root,
  						True, GrabModeAsync, GrabModeAsync);
  	}
  }
  
  void
  incnmaster(const Arg *arg)
  {
  	selmon->nmaster = selmon->pertag->nmasters[selmon->pertag->curtag] = MAX(selmon->nmaster + arg->i, 0);
  	arrange(selmon);
  }
  
  #ifdef XINERAMA
  static int
  isuniquegeom(XineramaScreenInfo *unique, size_t n, XineramaScreenInfo *info)
  {
  	while (n--)
  		if (unique[n].x_org == info->x_org && unique[n].y_org == info->y_org
  		&& unique[n].width == info->width && unique[n].height == info->height)
  			return 0;
  	return 1;
  }
  #endif /* XINERAMA */
  
  void
  keypress(XEvent *e)
  {
  	unsigned int i;
  	int keysyms_return;
  	KeySym* keysym;
  	XKeyEvent *ev;
  
  	ev = &e->xkey;
  	keysym = XGetKeyboardMapping(dpy, (KeyCode)ev->keycode, 1, &keysyms_return);
  	for (i = 0; i < LENGTH(keys); i++)
  		if (*keysym == keys[i].keysym
  				&& CLEANMASK(keys[i].mod) == CLEANMASK(ev->state)
  				&& keys[i].func)
  			keys[i].func(&(keys[i].arg));
  	XFree(keysym);
  }
  
  void
  killclient(const Arg *arg)
  {
  	if (!selmon->sel)
  		return;
  	if (!sendevent(selmon->sel, wmatom[WMDelete]))
  	{
  		XGrabServer(dpy);
  		XSetErrorHandler(xerrordummy);
  		XSetCloseDownMode(dpy, DestroyAll);
  		XKillClient(dpy, selmon->sel->win);
  		XSync(dpy, False);
  		XSetErrorHandler(xerror);
  		XUngrabServer(dpy);
  	}
  	selmon->pertag->prevclient[selmon->pertag->curtag] = NULL;
  }
  
  void
  manage(Window w, XWindowAttributes *wa)
  {
  	Client *c, *t = NULL;
  	Client *term = NULL;
  	Window trans = None;
  	XWindowChanges wc;
  
  	c = ecalloc(1, sizeof(Client));
  	c->win = w;
  	c->pid = winpid(w);
  	/* geometry */
  	c->x = c->oldx = wa->x;
  	c->y = c->oldy = wa->y;
  	c->w = c->oldw = wa->width;
  	c->h = c->oldh = wa->height;
  	c->oldbw = wa->border_width;
  	c->cfact = 1.0;
  	updatetitle(c);
  	if (XGetTransientForHint(dpy, w, &trans) && (t = wintoclient(trans))) {
  		c->mon = t->mon;
  		c->tags = t->tags;
  		c->bw = borderpx;
  	} else {
  		c->mon = selmon;
  		c->bw = borderpx;
  		applyrules(c);
  		term = termforwin(c);
  		if (term)
  			c->mon = term->mon;
  	}
  
  	if (c->x + WIDTH(c) > c->mon->mx + c->mon->mw)
  		c->x = c->mon->mx + c->mon->mw - WIDTH(c);
  	if (c->y + HEIGHT(c) > c->mon->my + c->mon->mh)
  		c->y = c->mon->my + c->mon->mh - HEIGHT(c);
  	c->x = MAX(c->x, c->mon->mx);
  	/* only fix client y-offset, if the client center might cover the bar */
  	c->y = MAX(c->y, ((c->mon->bar->by == c->mon->my) && (c->x + (c->w / 2) >= c->mon->wx)
  		&& (c->x + (c->w / 2) < c->mon->wx + c->mon->ww)) ? bh : c->mon->my);
  
  	wc.border_width = c->bw;
  	XConfigureWindow(dpy, w, CWBorderWidth, &wc);
  	if (c->isfloating)
  		XSetWindowBorder(dpy, w, scheme[SchemeNorm][ColFloat].pixel);
  	else
  		XSetWindowBorder(dpy, w, scheme[SchemeNorm][ColBorder].pixel);
  	configure(c); /* propagates border_width, if size doesn't change */
  	updatesizehints(c);
  	if (getatomprop(c, netatom[NetWMState]) == netatom[NetWMFullscreen])
  		setfullscreen(c, 1);
  	updatewmhints(c);
  	c->sfx = -9999;
  	c->sfy = -9999;
  	c->sfw = c->w;
  	c->sfh = c->h;
  
  	XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
  	grabbuttons(c, 0);
  
  	if (!c->isfloating)
  		c->isfloating = c->oldstate = trans != None || c->isfixed;
  	if (c->isfloating) {
  		XRaiseWindow(dpy, c->win);
  		XSetWindowBorder(dpy, w, scheme[SchemeNorm][ColFloat].pixel);
  	}
  	attach(c);
  	attachstack(c);
  	XChangeProperty(dpy, root, netatom[NetClientList], XA_WINDOW, 32, PropModeAppend,
  		(unsigned char *) &(c->win), 1);
  	XMoveResizeWindow(dpy, c->win, c->x + 2 * sw, c->y, c->w, c->h); /* some windows require this */
  
  	if (!HIDDEN(c))
  		setclientstate(c, NormalState);
  	if (c->mon == selmon)
  		unfocus(selmon->sel, 0, c);
  	c->mon->sel = c;
  	if (!(term && swallow(term, c))) {
  		if (riopid && (!riodraw_matchpid || isdescprocess(riopid, c->pid))) {
  			if (riodimensions[3] != -1)
  				rioposition(c, riodimensions[0], riodimensions[1], riodimensions[2], riodimensions[3]);
  			else {
  				killclient(&((Arg) { .v = c }));
  				return;
  			}
  		}
  		arrange(c->mon);
  		if (!HIDDEN(c))
  			XMapWindow(dpy, c->win);
  	}
  	focus(NULL);
  
  	setfloatinghint(c);
  }
  
  void
  mappingnotify(XEvent *e)
  {
  	XMappingEvent *ev = &e->xmapping;
  
  	XRefreshKeyboardMapping(ev);
  	if (ev->request == MappingKeyboard)
  		grabkeys();
  }
  
  void
  maprequest(XEvent *e)
  {
  	static XWindowAttributes wa;
  	XMapRequestEvent *ev = &e->xmaprequest;
  
  
  	if (!XGetWindowAttributes(dpy, ev->window, &wa))
  		return;
  	if (wa.override_redirect)
  		return;
  	if (!wintoclient(ev->window))
  		manage(ev->window, &wa);
  }
  
  void
  motionnotify(XEvent *e)
  {
  	static Monitor *mon = NULL;
  	Monitor *m;
  	XMotionEvent *ev = &e->xmotion;
  
  	if (ev->window != root)
  		return;
  	if ((m = recttomon(ev->x_root, ev->y_root, 1, 1)) != mon && mon) {
  		unfocus(selmon->sel, 1, NULL);
  		selmon = m;
  		focus(NULL);
  	}
  	mon = m;
  }
  
  void
  movemouse(const Arg *arg)
  {
  	int x, y, ocx, ocy, nx, ny;
  	Client *c;
  	Monitor *m;
  	XEvent ev;
  	Time lasttime = 0;
  
  	if (!(c = selmon->sel))
  		return;
  	if (c->isfullscreen) /* no support moving fullscreen windows by mouse */
  		return;
  	restack(selmon);
  	ocx = c->x;
  	ocy = c->y;
  	if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  		None, cursor[CurMove]->cursor, CurrentTime) != GrabSuccess)
  		return;
  	if (!getrootptr(&x, &y))
  		return;
  	ignoreconfigurerequests = 1;
  	do {
  		XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
  		switch(ev.type) {
  		case ConfigureRequest:
  		case Expose:
  		case MapRequest:
  			handler[ev.type](&ev);
  			break;
  		case MotionNotify:
  			if ((ev.xmotion.time - lasttime) <= (1000 / 60))
  				continue;
  			lasttime = ev.xmotion.time;
  
  			nx = ocx + (ev.xmotion.x - x);
  			ny = ocy + (ev.xmotion.y - y);
  			if (abs(selmon->wx - nx) < snap)
  				nx = selmon->wx;
  			else if (abs((selmon->wx + selmon->ww) - (nx + WIDTH(c))) < snap)
  				nx = selmon->wx + selmon->ww - WIDTH(c);
  			if (abs(selmon->wy - ny) < snap)
  				ny = selmon->wy;
  			else if (abs((selmon->wy + selmon->wh) - (ny + HEIGHT(c))) < snap)
  				ny = selmon->wy + selmon->wh - HEIGHT(c);
  			if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
  			&& (abs(nx - c->x) > snap || abs(ny - c->y) > snap)) {
  				c->sfx = -9999; // disable savefloats when using movemouse
  				togglefloating(NULL);
  			}
  			if (!selmon->lt[selmon->sellt]->arrange || c->isfloating) {
  				resize(c, nx, ny, c->w, c->h, 1);
  				/* save last known float coordinates */
  				c->sfx = nx;
  				c->sfy = ny;
  			}
  			break;
  		}
  	} while (ev.type != ButtonRelease);
  	XUngrabPointer(dpy, CurrentTime);
  	if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
  		if (c->tags & SPTAGMASK) {
  			c->mon->tagset[c->mon->seltags] ^= (c->tags & SPTAGMASK);
  			m->tagset[m->seltags] |= (c->tags & SPTAGMASK);
  		}
  		sendmon(c, m);
  		selmon = m;
  		focus(NULL);
  	}
  	ignoreconfigurerequests = 0;
  }
  
  Client *
  nexttiled(Client *c)
  {
  	for (; c && (c->isfloating || !ISVISIBLE(c) || HIDDEN(c)); c = c->next);
  	return c;
  }
  
  
  void
  propertynotify(XEvent *e)
  {
  	Client *c;
  	Window trans;
  	XPropertyEvent *ev = &e->xproperty;
  
  
  	if ((ev->window == root) && (ev->atom == XA_WM_NAME)) {
  		if (!fake_signal())
  			updatestatus();
  	} else if (ev->state == PropertyDelete) {
  		return; /* ignore */
  	} else if ((c = wintoclient(ev->window))) {
  		switch(ev->atom) {
  		default: break;
  		case XA_WM_TRANSIENT_FOR:
  			if (!c->isfloating && (XGetTransientForHint(dpy, c->win, &trans)) &&
  				(c->isfloating = (wintoclient(trans)) != NULL))
  				arrange(c->mon);
  			break;
  		case XA_WM_NORMAL_HINTS:
  			updatesizehints(c);
  			break;
  		case XA_WM_HINTS:
  			updatewmhints(c);
  			if (c->isurgent)
  				drawbars();
  			break;
  		}
  		if (ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
  			updatetitle(c);
  			if (c == c->mon->sel)
  				drawbar(c->mon);
  		}
  	}
  }
  
  void
  quit(const Arg *arg)
  {
  	if (arg->i)
  		restart = 1;
  	running = 0;
  
  }
  
  Monitor *
  recttomon(int x, int y, int w, int h)
  {
  	Monitor *m, *r = selmon;
  	int a, area = 0;
  
  	for (m = mons; m; m = m->next)
  		if ((a = INTERSECT(x, y, w, h, m)) > area) {
  			area = a;
  			r = m;
  		}
  	return r;
  }
  
  void
  resize(Client *c, int x, int y, int w, int h, int interact)
  {
  	if (applysizehints(c, &x, &y, &w, &h, interact))
  		resizeclient(c, x, y, w, h);
  }
  
  void
  resizeclient(Client *c, int x, int y, int w, int h)
  {
  	XWindowChanges wc;
  
  	c->oldx = c->x; c->x = wc.x = x;
  	c->oldy = c->y; c->y = wc.y = y;
  	c->oldw = c->w; c->w = wc.width = w;
  	c->oldh = c->h; c->h = wc.height = h;
  	wc.border_width = c->bw;
  	XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
  	configure(c);
  	XSync(dpy, False);
  }
  
  void
  resizemouse(const Arg *arg)
  {
  	int ocx, ocy, nw, nh;
  	Client *c;
  	Monitor *m;
  	XEvent ev;
  	Time lasttime = 0;
  
  	if (!(c = selmon->sel))
  		return;
  	if (c->isfullscreen) /* no support resizing fullscreen windows by mouse */
  		return;
  	restack(selmon);
  	ocx = c->x;
  	ocy = c->y;
  	if (XGrabPointer(dpy, root, False, MOUSEMASK, GrabModeAsync, GrabModeAsync,
  		None, cursor[CurResize]->cursor, CurrentTime) != GrabSuccess)
  		return;
  	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
  	ignoreconfigurerequests = 1;
  	do {
  		XMaskEvent(dpy, MOUSEMASK|ExposureMask|SubstructureRedirectMask, &ev);
  		switch(ev.type) {
  		case ConfigureRequest:
  		case Expose:
  		case MapRequest:
  			handler[ev.type](&ev);
  			break;
  		case MotionNotify:
  			if ((ev.xmotion.time - lasttime) <= (1000 / 60))
  				continue;
  			lasttime = ev.xmotion.time;
  
  			nw = MAX(ev.xmotion.x - ocx - 2 * c->bw + 1, 1);
  			nh = MAX(ev.xmotion.y - ocy - 2 * c->bw + 1, 1);
  			if (c->mon->wx + nw >= selmon->wx && c->mon->wx + nw <= selmon->wx + selmon->ww
  			&& c->mon->wy + nh >= selmon->wy && c->mon->wy + nh <= selmon->wy + selmon->wh)
  			{
  				if (!c->isfloating && selmon->lt[selmon->sellt]->arrange
  				&& (abs(nw - c->w) > snap || abs(nh - c->h) > snap)) {
  					c->sfx = -9999; // disable savefloats when using resizemouse
  					togglefloating(NULL);
  				}
  			}
  			if (!selmon->lt[selmon->sellt]->arrange || c->isfloating) {
  				resize(c, c->x, c->y, nw, nh, 1);
  				c->sfx = c->x;
  				c->sfy = c->y;
  				c->sfw = nw;
  				c->sfh = nh;
  			}
  			break;
  		}
  	} while (ev.type != ButtonRelease);
  	XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w + c->bw - 1, c->h + c->bw - 1);
  	XUngrabPointer(dpy, CurrentTime);
  	while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  	if ((m = recttomon(c->x, c->y, c->w, c->h)) != selmon) {
  		if (c->tags & SPTAGMASK) {
  			c->mon->tagset[c->mon->seltags] ^= (c->tags & SPTAGMASK);
  			m->tagset[m->seltags] |= (c->tags & SPTAGMASK);
  		}
  		sendmon(c, m);
  		selmon = m;
  		focus(NULL);
  	}
  	ignoreconfigurerequests = 0;
  }
  
  void
  restack(Monitor *m)
  {
  	Client *c;
  	XEvent ev;
  	XWindowChanges wc;
  
  	drawbar(m);
  	if (!m->sel)
  		return;
  	if (m->sel->isfloating || !m->lt[m->sellt]->arrange)
  		XRaiseWindow(dpy, m->sel->win);
  	if (m->lt[m->sellt]->arrange) {
  		wc.stack_mode = Below;
  		wc.sibling = m->bar->win;
  		for (c = m->stack; c; c = c->snext)
  			if (!c->isfloating && ISVISIBLE(c)) {
  				XConfigureWindow(dpy, c->win, CWSibling|CWStackMode, &wc);
  				wc.sibling = c->win;
  			}
  	}
  	XSync(dpy, False);
  	while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
  }
  
  void
  run(void)
  {
  	XEvent ev;
  	/* main event loop */
  	XSync(dpy, False);
  	while (running && !XNextEvent(dpy, &ev))
  		if (handler[ev.type])
  			handler[ev.type](&ev); /* call handler */
  }
  
  void
  scan(void)
  {
  	scanner = 1;
  	char swin[256];
  	unsigned int i, num;
  	Window d1, d2, *wins = NULL;
  	XWindowAttributes wa;
  
  	if (XQueryTree(dpy, root, &d1, &d2, &wins, &num)) {
  		for (i = 0; i < num; i++) {
  			if (!XGetWindowAttributes(dpy, wins[i], &wa)
  			|| wa.override_redirect || XGetTransientForHint(dpy, wins[i], &d1))
  				continue;
  			if (wa.map_state == IsViewable || getstate(wins[i]) == IconicState)
  				manage(wins[i], &wa);
  			else if (gettextprop(wins[i], netatom[NetClientList], swin, sizeof swin))
  				manage(wins[i], &wa);
  		}
  		for (i = 0; i < num; i++) { /* now the transients */
  			if (!XGetWindowAttributes(dpy, wins[i], &wa))
  				continue;
  			if (XGetTransientForHint(dpy, wins[i], &d1)
  			&& (wa.map_state == IsViewable || getstate(wins[i]) == IconicState))
  				manage(wins[i], &wa);
  		}
  		XFree(wins);
  	}
  	scanner = 0;
  }
  
  void
  sendmon(Client *c, Monitor *m)
  {
  	if (c->mon == m)
  		return;
  	unfocus(c, 1, NULL);
  	detach(c);
  	detachstack(c);
  	c->mon = m;
  	if (!(c->tags & SPTAGMASK))
  	c->tags = m->tagset[m->seltags]; /* assign tags of target monitor */
  	attach(c);
  	attachstack(c);
  	focus(NULL);
  	arrange(NULL);
  }
  
  void
  setclientstate(Client *c, long state)
  {
  	long data[] = { state, None };
  
  	XChangeProperty(dpy, c->win, wmatom[WMState], wmatom[WMState], 32,
  		PropModeReplace, (unsigned char *)data, 2);
  }
  
  int
  sendevent(Client *c, Atom proto)
  {
  	int n;
  	Atom *protocols;
  	int exists = 0;
  	XEvent ev;
  
  	if (XGetWMProtocols(dpy, c->win, &protocols, &n)) {
  		while (!exists && n--)
  			exists = protocols[n] == proto;
  		XFree(protocols);
  	}
  
  	if (exists) {
  		ev.type = ClientMessage;
  		ev.xclient.window = c->win;
  		ev.xclient.message_type = wmatom[WMProtocols];
  		ev.xclient.format = 32;
  		ev.xclient.data.l[0] = proto;
  		ev.xclient.data.l[1] = CurrentTime;
  		XSendEvent(dpy, c->win, False, NoEventMask, &ev);
  	}
  	return exists;
  }
  
  void
  setfocus(Client *c)
  {
  	if (!c->neverfocus) {
  		XSetInputFocus(dpy, c->win, RevertToPointerRoot, CurrentTime);
  		XChangeProperty(dpy, root, netatom[NetActiveWindow],
  			XA_WINDOW, 32, PropModeReplace,
  			(unsigned char *) &(c->win), 1);
  	}
  	sendevent(c, wmatom[WMTakeFocus]);
  }
  
  void
  setfullscreen(Client *c, int fullscreen)
  {
  	if (fullscreen && !c->isfullscreen) {
  		XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
  			PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
  		c->isfullscreen = 1;
  		c->oldbw = c->bw;
  		c->oldstate = c->isfloating;
  		c->bw = 0;
  		c->isfloating = 1;
  		resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
  		XRaiseWindow(dpy, c->win);
  	} else if (!fullscreen && c->isfullscreen){
  		XChangeProperty(dpy, c->win, netatom[NetWMState], XA_ATOM, 32,
  			PropModeReplace, (unsigned char*)0, 0);
  		c->isfullscreen = 0;
  		c->bw = c->oldbw;
  		c->isfloating = c->oldstate;
  		c->x = c->oldx;
  		c->y = c->oldy;
  		c->w = c->oldw;
  		c->h = c->oldh;
  		resizeclient(c, c->x, c->y, c->w, c->h);
  		arrange(c->mon);
  	}
  }
  
  void
  setlayout(const Arg *arg)
  {
  	if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt]) {
  		selmon->pertag->sellts[selmon->pertag->curtag] ^= 1;
  		selmon->sellt = selmon->pertag->sellts[selmon->pertag->curtag];
  	}
  	if (arg && arg->v)
  		selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt] = (Layout *)arg->v;
  	selmon->lt[selmon->sellt] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt];
  
  	if (selmon->lt[selmon->sellt]->preset.nmaster && selmon->lt[selmon->sellt]->preset.nmaster != -1)
  		selmon->nmaster = selmon->lt[selmon->sellt]->preset.nmaster;
  	if (selmon->lt[selmon->sellt]->preset.nstack && selmon->lt[selmon->sellt]->preset.nstack != -1)
  		selmon->nstack = selmon->lt[selmon->sellt]->preset.nstack;
  
  	selmon->ltaxis[LAYOUT] = selmon->lt[selmon->sellt]->preset.layout;
  	selmon->ltaxis[MASTER] = selmon->lt[selmon->sellt]->preset.masteraxis;
  	selmon->ltaxis[STACK]  = selmon->lt[selmon->sellt]->preset.stack1axis;
  	selmon->ltaxis[STACK2] = selmon->lt[selmon->sellt]->preset.stack2axis;
  
  	selmon->pertag->ltaxis[selmon->pertag->curtag][LAYOUT] = selmon->ltaxis[LAYOUT];
  	selmon->pertag->ltaxis[selmon->pertag->curtag][MASTER] = selmon->ltaxis[MASTER];
  	selmon->pertag->ltaxis[selmon->pertag->curtag][STACK]  = selmon->ltaxis[STACK];
  	selmon->pertag->ltaxis[selmon->pertag->curtag][STACK2] = selmon->ltaxis[STACK2];
  	strncpy(selmon->ltsymbol, selmon->lt[selmon->sellt]->symbol, sizeof selmon->ltsymbol);
  	if (selmon->sel)
  		arrange(selmon);
  	else
  		drawbar(selmon);
  }
  
  /* arg > 1.0 will set mfact absolutely */
  void
  setmfact(const Arg *arg)
  {
  	float f;
  
  	if (!arg || !selmon->lt[selmon->sellt]->arrange)
  		return;
  	f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
  	if (f < 0.05 || f > 0.95)
  		return;
  	selmon->mfact = selmon->pertag->mfacts[selmon->pertag->curtag] = f;
  	arrange(selmon);
  }
  
  void
  setup(void)
  {
  	int i;
  	XSetWindowAttributes wa;
  	Atom utf8string;
  
  	/* clean up any zombies immediately */
  	sigchld(0);
  
  	signal(SIGHUP, sighup);
  	signal(SIGTERM, sigterm);
  
  	/* init screen */
  	screen = DefaultScreen(dpy);
  	sw = DisplayWidth(dpy, screen);
  	sh = DisplayHeight(dpy, screen);
  	root = RootWindow(dpy, screen);
  	drw = drw_create(dpy, screen, root, sw, sh);
  	if (!drw_font_create(drw, font))
  		die("no fonts could be loaded.");
  	lrpad = drw->fonts->h;
  	bh = drw->fonts->h + 2;
  	updategeom();
  	/* init atoms */
  	utf8string = XInternAtom(dpy, "UTF8_STRING", False);
  	wmatom[WMProtocols] = XInternAtom(dpy, "WM_PROTOCOLS", False);
  	wmatom[WMDelete] = XInternAtom(dpy, "WM_DELETE_WINDOW", False);
  	wmatom[WMState] = XInternAtom(dpy, "WM_STATE", False);
  	wmatom[WMTakeFocus] = XInternAtom(dpy, "WM_TAKE_FOCUS", False);
  	wmatom[WMWindowRole] = XInternAtom(dpy, "WM_WINDOW_ROLE", False);
  	netatom[NetActiveWindow] = XInternAtom(dpy, "_NET_ACTIVE_WINDOW", False);
  	netatom[NetSupported] = XInternAtom(dpy, "_NET_SUPPORTED", False);
  	netatom[NetDesktopViewport] = XInternAtom(dpy, "_NET_DESKTOP_VIEWPORT", False);
  	netatom[NetNumberOfDesktops] = XInternAtom(dpy, "_NET_NUMBER_OF_DESKTOPS", False);
  	netatom[NetCurrentDesktop] = XInternAtom(dpy, "_NET_CURRENT_DESKTOP", False);
  	netatom[NetDesktopNames] = XInternAtom(dpy, "_NET_DESKTOP_NAMES", False);
  	netatom[NetWMName] = XInternAtom(dpy, "_NET_WM_NAME", False);
  	netatom[NetWMState] = XInternAtom(dpy, "_NET_WM_STATE", False);
  	netatom[NetWMCheck] = XInternAtom(dpy, "_NET_SUPPORTING_WM_CHECK", False);
  	netatom[NetWMFullscreen] = XInternAtom(dpy, "_NET_WM_STATE_FULLSCREEN", False);
  	netatom[NetWMWindowType] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE", False);
  	netatom[NetClientList] = XInternAtom(dpy, "_NET_CLIENT_LIST", False);
  	/* init cursors */
  	cursor[CurNormal] = drw_cur_create(drw, XC_left_ptr);
  	cursor[CurResize] = drw_cur_create(drw, XC_sizing);
  	cursor[CurIronCross] = drw_cur_create(drw, XC_iron_cross);
  	cursor[CurMove] = drw_cur_create(drw, XC_fleur);
  	/* init appearance */
  	scheme = ecalloc(LENGTH(colors), sizeof(Clr *));
  	for (i = 0; i < LENGTH(colors); i++)
  		scheme[i] = drw_scm_create(drw, colors[i], ColCount);
  
  	updatebars();
  	updatestatus();
  
  	/* supporting window for NetWMCheck */
  	wmcheckwin = XCreateSimpleWindow(dpy, root, 0, 0, 1, 1, 0, 0, 0);
  	XChangeProperty(dpy, wmcheckwin, netatom[NetWMCheck], XA_WINDOW, 32,
  		PropModeReplace, (unsigned char *) &wmcheckwin, 1);
  	XChangeProperty(dpy, wmcheckwin, netatom[NetWMName], utf8string, 8,
  		PropModeReplace, (unsigned char *) "LG3D", 4);
  	XChangeProperty(dpy, root, netatom[NetWMCheck], XA_WINDOW, 32,
  		PropModeReplace, (unsigned char *) &wmcheckwin, 1);
  	/* EWMH support per view */
  	XChangeProperty(dpy, root, netatom[NetSupported], XA_ATOM, 32,
  		PropModeReplace, (unsigned char *) netatom, NetLast);
  	setnumdesktops();
  	setcurrentdesktop();
  	setdesktopnames();
  	setviewport();
  	XDeleteProperty(dpy, root, netatom[NetClientList]);
  	/* select events */
  	wa.cursor = cursor[CurNormal]->cursor;
  	wa.event_mask = SubstructureRedirectMask|SubstructureNotifyMask
  		|ButtonPressMask|PointerMotionMask|EnterWindowMask
  		|LeaveWindowMask|StructureNotifyMask|PropertyChangeMask;
  	XChangeWindowAttributes(dpy, root, CWEventMask|CWCursor, &wa);
  	XSelectInput(dpy, root, wa.event_mask);
  	grabkeys();
  	focus(NULL);
  }
  
  
  void
  seturgent(Client *c, int urg)
  {
  	XWMHints *wmh;
  
  	c->isurgent = urg;
  	if (!(wmh = XGetWMHints(dpy, c->win)))
  		return;
  	wmh->flags = urg ? (wmh->flags | XUrgencyHint) : (wmh->flags & ~XUrgencyHint);
  	XSetWMHints(dpy, c->win, wmh);
  	XFree(wmh);
  }
  
  void
  showhide(Client *c)
  {
  	if (!c)
  		return;
  	if (ISVISIBLE(c)) {
  		if (
  			(c->tags & SPTAGMASK) &&
  			c->isfloating &&
  			(
  				c->x < c->mon->mx ||
  				c->x > c->mon->mx + c->mon->mw ||
  				c->y < c->mon->my ||
  				c->y > c->mon->my + c->mon->mh
  			)
  		) {
  			c->x = c->mon->wx + (c->mon->ww / 2 - WIDTH(c) / 2);
  			c->y = c->mon->wy + (c->mon->wh / 2 - HEIGHT(c) / 2);
  		}
  		/* show clients top down */
  		if (!c->mon->lt[c->mon->sellt]->arrange && c->sfx != -9999 && !c->isfullscreen) {
  			XMoveWindow(dpy, c->win, c->sfx, c->sfy);
  			resize(c, c->sfx, c->sfy, c->sfw, c->sfh, 0);
  			showhide(c->snext);
  			return;
  		}
  		XMoveWindow(dpy, c->win, c->x, c->y);
  		if ((!c->mon->lt[c->mon->sellt]->arrange || c->isfloating)
  			&& !c->isfullscreen
  			)
  			resize(c, c->x, c->y, c->w, c->h, 0);
  		showhide(c->snext);
  	} else {
  		/* hide clients bottom up */
  		showhide(c->snext);
  		XMoveWindow(dpy, c->win, WIDTH(c) * -2, c->y);
  	}
  }
  
  void
  sigchld(int unused)
  {
  	if (signal(SIGCHLD, sigchld) == SIG_ERR)
  		die("can't install SIGCHLD handler:");
  	while (0 < waitpid(-1, NULL, WNOHANG));
  }
  
  void
  spawn(const Arg *arg)
  {
  	spawncmd(arg);
  }
  
  pid_t
  spawncmd(const Arg *arg)
  {
  	pid_t pid;
  	if (arg->v == dmenucmd)
  		dmenumon[0] = '0' + selmon->num;
  
  	if ((pid = fork()) == 0)
  	{
  		if (dpy)
  			close(ConnectionNumber(dpy));
  		setsid();
  		execvp(((char **)arg->v)[0], (char **)arg->v);
  		fprintf(stderr, "dwm: execvp %s", ((char **)arg->v)[0]);
  		perror(" failed");
  		exit(EXIT_SUCCESS);
  	}
  	return pid;
  }
  
  void
  tag(const Arg *arg)
  {
  	unsigned int tagmask, tagindex;
  
  	if (selmon->sel && arg->ui & TAGMASK) {
  		selmon->sel->tags = arg->ui & TAGMASK;
  		focus(NULL);
  		selmon->pertag->prevclient[selmon->pertag->curtag] = NULL;
  		for (tagmask = arg->ui & TAGMASK, tagindex = 1; tagmask!=0; tagmask >>= 1, tagindex++)
  			if (tagmask & 1)
  				selmon->pertag->prevclient[tagindex] = NULL;
  		arrange(selmon);
  	}
  }
  
  void
  tagmon(const Arg *arg)
  {
  	Client *c = selmon->sel;
  	if (!c || !mons->next)
  		return;
  	if (c->isfullscreen) {
  		c->isfullscreen = 0;
  		sendmon(c, dirtomon(arg->i));
  		c->isfullscreen = 1;
  		resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
  		XRaiseWindow(dpy, c->win);
  	} else
  		sendmon(c, dirtomon(arg->i));
  }
  
  void
  togglebar(const Arg *arg)
  {
  	Bar *bar;
  	selmon->showbar = selmon->pertag->showbars[selmon->pertag->curtag] = !selmon->showbar;
  	updatebarpos(selmon);
  	for (bar = selmon->bar; bar; bar = bar->next)
  		XMoveResizeWindow(dpy, bar->win, bar->bx, bar->by, bar->bw, bar->bh);
  	arrange(selmon);
  }
  
  void
  togglefloating(const Arg *arg)
  {
  	Client *c = selmon->sel;
  	if (arg && arg->v)
  		c = (Client*)arg->v;
  	if (!c)
  		return;
  	if (c->isfullscreen) /* no support for fullscreen windows */
  		return;
  	c->isfloating = !c->isfloating || c->isfixed;
  	if (c->isfloating)
  		XSetWindowBorder(dpy, c->win, scheme[SchemeSel][ColFloat].pixel);
  	else
  		XSetWindowBorder(dpy, c->win, scheme[SchemeSel][ColBorder].pixel);
  	if (c->isfloating) {
  		if (c->sfx != -9999) {
  			/* restore last known float dimensions */
  			resize(c, c->sfx, c->sfy, c->sfw, c->sfh, 0);
  		} else
  		resize(c, c->x, c->y, c->w, c->h, 0);
  	} else {
  		/* save last known float dimensions */
  		c->sfx = c->x;
  		c->sfy = c->y;
  		c->sfw = c->w;
  		c->sfh = c->h;
  	}
  	arrange(c->mon);
  
  	setfloatinghint(c);
  }
  
  void
  toggletag(const Arg *arg)
  {
  	unsigned int newtags;
  	unsigned int tagmask, tagindex;
  
  	if (!selmon->sel)
  		return;
  	newtags = selmon->sel->tags ^ (arg->ui & TAGMASK);
  	if (newtags) {
  		selmon->sel->tags = newtags;
  		focus(NULL);
  		for (tagmask = arg->ui & TAGMASK, tagindex = 1; tagmask!=0; tagmask >>= 1, tagindex++)
  			if (tagmask & 1)
  				selmon->pertag->prevclient[tagindex] = NULL;
  		arrange(selmon);
  	}
  	updatecurrentdesktop();
  }
  
  void
  toggleview(const Arg *arg)
  {
  	unsigned int newtagset = selmon->tagset[selmon->seltags] ^ (arg->ui & TAGMASK);
  	int i;
  
  
  	if (newtagset) {
  		selmon->tagset[selmon->seltags] = newtagset;
  
  		if (newtagset == ~SPTAGMASK)
  		{
  			selmon->pertag->prevtag = selmon->pertag->curtag;
  			selmon->pertag->curtag = 0;
  		}
  		/* test if the user did not select the same tag */
  		if (!(newtagset & 1 << (selmon->pertag->curtag - 1))) {
  			selmon->pertag->prevtag = selmon->pertag->curtag;
  			for (i = 0; !(newtagset & 1 << i); i++) ;
  			selmon->pertag->curtag = i + 1;
  		}
  
  		/* apply settings for this view */
  		selmon->nmaster = selmon->pertag->nmasters[selmon->pertag->curtag];
  		selmon->mfact = selmon->pertag->mfacts[selmon->pertag->curtag];
  		selmon->sellt = selmon->pertag->sellts[selmon->pertag->curtag];
  		selmon->lt[selmon->sellt] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt];
  		selmon->lt[selmon->sellt^1] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt^1];
  		if (selmon->showbar != selmon->pertag->showbars[selmon->pertag->curtag])
  			togglebar(NULL);
  		focus(NULL);
  		arrange(selmon);
  	}
  	updatecurrentdesktop();
  }
  
  void
  unfocus(Client *c, int setfocus, Client *nextfocus)
  {
  	if (!c)
  		return;
  	selmon->pertag->prevclient[selmon->pertag->curtag] = c;
  	grabbuttons(c, 0);
  	if (c->isfloating)
  		XSetWindowBorder(dpy, c->win, scheme[SchemeNorm][ColFloat].pixel);
  	else
  		XSetWindowBorder(dpy, c->win, scheme[SchemeNorm][ColBorder].pixel);
  	if (setfocus) {
  		XSetInputFocus(dpy, root, RevertToPointerRoot, CurrentTime);
  		XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
  	}
  }
  
  void
  unmanage(Client *c, int destroyed)
  {
  	Monitor *m = c->mon;
  	XWindowChanges wc;
  
  	if (c->swallowing) {
  		unswallow(c);
  		return;
  	}
  
  	Client *s = swallowingclient(c->win);
  	if (s) {
  		free(s->swallowing);
  		s->swallowing = NULL;
  		arrange(m);
  		focus(NULL);
  		return;
  	}
  
  	detach(c);
  	detachstack(c);
  	if (!destroyed) {
  		wc.border_width = c->oldbw;
  		XGrabServer(dpy); /* avoid race conditions */
  		XSetErrorHandler(xerrordummy);
  		XConfigureWindow(dpy, c->win, CWBorderWidth, &wc); /* restore border */
  		XUngrabButton(dpy, AnyButton, AnyModifier, c->win);
  		setclientstate(c, WithdrawnState);
  		XSync(dpy, False);
  		XSetErrorHandler(xerror);
  		XUngrabServer(dpy);
  	}
  	free(c);
  	if (s)
  		return;
  	focus(NULL);
  	updateclientlist();
  	arrange(m);
  }
  
  void
  unmapnotify(XEvent *e)
  {
  	Client *c;
  	XUnmapEvent *ev = &e->xunmap;
  
  	if ((c = wintoclient(ev->window))) {
  		if (ev->send_event)
  			setclientstate(c, WithdrawnState);
  		else
  			unmanage(c, 0);
  	}
  }
  
  void
  updatebars(void)
  {
  	Bar *bar;
  	Monitor *m;
  	XSetWindowAttributes wa = {
  		.override_redirect = True,
  		.background_pixmap = ParentRelative,
  		.event_mask = ButtonPressMask|ExposureMask
  	};
  	XClassHint ch = {"dwm", "dwm"};
  	for (m = mons; m; m = m->next) {
  		for (bar = m->bar; bar; bar = bar->next) {
  			if (bar->external)
  				continue;
  			if (!bar->win) {
  				bar->win = XCreateWindow(dpy, root, bar->bx, bar->by, bar->bw, bar->bh, 0, DefaultDepth(dpy, screen),
  						CopyFromParent, DefaultVisual(dpy, screen),
  						CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
  				XDefineCursor(dpy, bar->win, cursor[CurNormal]->cursor);
  				XMapRaised(dpy, bar->win);
  				XSetClassHint(dpy, bar->win, &ch);
  			}
  		}
  	}
  }
  
  void
  updatebarpos(Monitor *m)
  {
  
  	m->wx = m->mx;
  	m->wy = m->my;
  	m->ww = m->mw;
  	m->wh = m->mh;
  	Bar *bar;
  	int y_pad = 0;
  	int x_pad = 0;
  
  
  	for (bar = m->bar; bar; bar = bar->next) {
  		bar->bx = m->wx + x_pad;
  		bar->bw = m->ww - 2 * x_pad;
  	}
  
  	for (bar = m->bar; bar; bar = bar->next)
  		if (!m->showbar || !bar->showbar)
  			bar->by = -bar->bh - y_pad;
  
  
  	if (!m->showbar)
  		return;
  	for (bar = m->bar; bar; bar = bar->next) {
  		if (!bar->showbar)
  			continue;
  		if (bar->topbar)
  			m->wy = m->wy + bar->bh + y_pad;
  		m->wh -= y_pad + bar->bh;
  	}
  	for (bar = m->bar; bar; bar = bar->next)
  		bar->by = (bar->topbar ? m->wy - bar->bh : m->wy + m->wh);
  }
  
  void
  updateclientlist()
  {
  	Client *c;
  	Monitor *m;
  
  	XDeleteProperty(dpy, root, netatom[NetClientList]);
  	for (m = mons; m; m = m->next)
  		for (c = m->clients; c; c = c->next)
  			XChangeProperty(dpy, root, netatom[NetClientList],
  				XA_WINDOW, 32, PropModeAppend,
  				(unsigned char *) &(c->win), 1);
  
  }
  
  int
  updategeom(void)
  {
  	int dirty = 0;
  
  #ifdef XINERAMA
  	if (XineramaIsActive(dpy)) {
  		int i, j, n, nn;
  		Client *c;
  		Monitor *m;
  		XineramaScreenInfo *info = XineramaQueryScreens(dpy, &nn);
  		XineramaScreenInfo *unique = NULL;
  
  		for (n = 0, m = mons; m; m = m->next, n++);
  		/* only consider unique geometries as separate screens */
  		unique = ecalloc(nn, sizeof(XineramaScreenInfo));
  		for (i = 0, j = 0; i < nn; i++)
  			if (isuniquegeom(unique, j, &info[i]))
  				memcpy(&unique[j++], &info[i], sizeof(XineramaScreenInfo));
  		XFree(info);
  		nn = j;
  		if (n <= nn) { /* new monitors available */
  			for (i = 0; i < (nn - n); i++) {
  				for (m = mons; m && m->next; m = m->next);
  				if (m)
  					m->next = createmon();
  				else
  					mons = createmon();
  			}
  			for (i = 0, m = mons; i < nn && m; m = m->next, i++) {
  				if (i >= n
  				|| unique[i].x_org != m->mx || unique[i].y_org != m->my
  				|| unique[i].width != m->mw || unique[i].height != m->mh)
  				{
  					dirty = 1;
  					m->num = i;
  					m->mx = m->wx = unique[i].x_org;
  					m->my = m->wy = unique[i].y_org;
  					m->mw = m->ww = unique[i].width;
  					m->mh = m->wh = unique[i].height;
  					updatebarpos(m);
  				}
  			}
  		} else { /* less monitors available nn < n */
  			for (i = nn; i < n; i++) {
  				for (m = mons; m && m->next; m = m->next);
  				while ((c = m->clients)) {
  					dirty = 1;
  					m->clients = c->next;
  					detachstack(c);
  					c->mon = mons;
  					attach(c);
  					attachstack(c);
  				}
  				if (m == selmon)
  					selmon = mons;
  				cleanupmon(m);
  			}
  		}
  		for (i = 0, m = mons; m; m = m->next, i++)
  			m->index = i;
  		free(unique);
  	} else
  #endif /* XINERAMA */
  	{ /* default monitor setup */
  		if (!mons)
  			mons = createmon();
  		if (mons->mw != sw || mons->mh != sh) {
  			dirty = 1;
  			mons->mw = mons->ww = sw;
  			mons->mh = mons->wh = sh;
  			updatebarpos(mons);
  		}
  	}
  	if (dirty) {
  		selmon = mons;
  		selmon = wintomon(root);
  	}
  	return dirty;
  }
  
  void
  updatenumlockmask(void)
  {
  	unsigned int i, j;
  	XModifierKeymap *modmap;
  
  	numlockmask = 0;
  	modmap = XGetModifierMapping(dpy);
  	for (i = 0; i < 8; i++)
  		for (j = 0; j < modmap->max_keypermod; j++)
  			if (modmap->modifiermap[i * modmap->max_keypermod + j]
  				== XKeysymToKeycode(dpy, XK_Num_Lock))
  				numlockmask = (1 << i);
  	XFreeModifiermap(modmap);
  }
  
  void
  updatesizehints(Client *c)
  {
  	long msize;
  	XSizeHints size;
  
  	if (!XGetWMNormalHints(dpy, c->win, &size, &msize))
  		/* size is uninitialized, ensure that size.flags aren't used */
  		size.flags = PSize;
  	if (size.flags & PBaseSize) {
  		c->basew = size.base_width;
  		c->baseh = size.base_height;
  	} else if (size.flags & PMinSize) {
  		c->basew = size.min_width;
  		c->baseh = size.min_height;
  	} else
  		c->basew = c->baseh = 0;
  	if (size.flags & PResizeInc) {
  		c->incw = size.width_inc;
  		c->inch = size.height_inc;
  	} else
  		c->incw = c->inch = 0;
  	if (size.flags & PMaxSize) {
  		c->maxw = size.max_width;
  		c->maxh = size.max_height;
  	} else
  		c->maxw = c->maxh = 0;
  	if (size.flags & PMinSize) {
  		c->minw = size.min_width;
  		c->minh = size.min_height;
  	} else if (size.flags & PBaseSize) {
  		c->minw = size.base_width;
  		c->minh = size.base_height;
  	} else
  		c->minw = c->minh = 0;
  	if (size.flags & PAspect) {
  		c->mina = (float)size.min_aspect.y / size.min_aspect.x;
  		c->maxa = (float)size.max_aspect.x / size.max_aspect.y;
  	} else
  		c->maxa = c->mina = 0.0;
  	c->isfixed = (c->maxw && c->maxh && c->maxw == c->minw && c->maxh == c->minh);
  }
  
  void
  updatestatus(void)
  {
  	Monitor *m;
  	if (!gettextprop(root, XA_WM_NAME, rawstext, sizeof(rawstext)))
  		strcpy(stext, "dwm-"VERSION);
  	else
  		copyvalidchars(stext, rawstext);
  	for (m = mons; m; m = m->next)
  		drawbar(m);
  }
  
  void
  updatetitle(Client *c)
  {
  
  	if (!gettextprop(c->win, netatom[NetWMName], c->name, sizeof c->name))
  		gettextprop(c->win, XA_WM_NAME, c->name, sizeof c->name);
  	if (c->name[0] == '\0') /* hack to mark broken clients */
  		strcpy(c->name, broken);
  
  }
  
  void
  updatewmhints(Client *c)
  {
  	XWMHints *wmh;
  
  	if ((wmh = XGetWMHints(dpy, c->win))) {
  		if (c == selmon->sel && wmh->flags & XUrgencyHint) {
  			wmh->flags &= ~XUrgencyHint;
  			XSetWMHints(dpy, c->win, wmh);
  		} else
  			c->isurgent = (wmh->flags & XUrgencyHint) ? 1 : 0;
  		if (c->isurgent) {
  			if (c->isfloating)
  				XSetWindowBorder(dpy, c->win, scheme[SchemeUrg][ColFloat].pixel);
  			else
  				XSetWindowBorder(dpy, c->win, scheme[SchemeUrg][ColBorder].pixel);
  		}
  		if (wmh->flags & InputHint)
  			c->neverfocus = !wmh->input;
  		else
  			c->neverfocus = 0;
  		XFree(wmh);
  	}
  }
  
  void
  view(const Arg *arg)
  {
  	if ((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
  	{
  		return;
      }
  	selmon->seltags ^= 1; /* toggle sel tagset */
  	pertagview(arg);
  	Client *unmodified = selmon->pertag->prevclient[selmon->pertag->curtag];
  	focus(NULL);
  	selmon->pertag->prevclient[selmon->pertag->curtag] = unmodified;
  	arrange(selmon);
  	updatecurrentdesktop();
  }
  
  Client *
  wintoclient(Window w)
  {
  	Client *c;
  	Monitor *m;
  
  	for (m = mons; m; m = m->next)
  		for (c = m->clients; c; c = c->next)
  			if (c->win == w)
  				return c;
  	return NULL;
  }
  
  Monitor *
  wintomon(Window w)
  {
  	int x, y;
  	Client *c;
  	Monitor *m;
  	Bar *bar;
  
  	if (w == root && getrootptr(&x, &y))
  		return recttomon(x, y, 1, 1);
  	for (m = mons; m; m = m->next)
  		for (bar = m->bar; bar; bar = bar->next)
  			if (w == bar->win)
  				return m;
  	if ((c = wintoclient(w)))
  		return c->mon;
  	return selmon;
  }
  
  /* 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 may call 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_GrabButton && ee->error_code == BadAccess)
  	|| (ee->request_code == X_GrabKey && ee->error_code == BadAccess)
  	|| (ee->request_code == X_CopyArea && ee->error_code == BadDrawable))
  		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
  xerrordummy(Display *dpy, XErrorEvent *ee)
  {
  	return 0;
  }
  
  /* Startup Error handler to check if another window manager
   * is already running. */
  int
  xerrorstart(Display *dpy, XErrorEvent *ee)
  {
  	die("dwm: another window manager is already running");
  	return -1;
  }
  
  void
  zoom(const Arg *arg)
  {
  	Client *c = selmon->sel;
  	if (arg && arg->v)
  		c = (Client*)arg->v;
  	if (!c)
  		return;
  	Client *at = NULL, *cold, *cprevious = NULL, *p;
  
  
  	c->mon->pertag->prevclient[c->mon->pertag->curtag] = nexttiled(c->mon->clients);
  
  	if (!c->mon->lt[c->mon->sellt]->arrange
  	|| (c && c->isfloating)
  	|| !c
  	)
  		return;
  
  	if (c == nexttiled(c->mon->clients)) {
  		p = c->mon->pertag->prevzooms[c->mon->pertag->curtag];
  		at = findbefore(p);
  		if (at)
  			cprevious = nexttiled(at->next);
  		if (!cprevious || cprevious != p) {
  			c->mon->pertag->prevzooms[c->mon->pertag->curtag] = NULL;
  			if (!c || !(c = c->mon->pertag->prevclient[c->mon->pertag->curtag] = nexttiled(c->next)))
  				return;
  		} else
  			c = c->mon->pertag->prevclient[c->mon->pertag->curtag] = cprevious;
  	}
  
  	cold = nexttiled(c->mon->clients);
  	if (c != cold && !at)
  		at = findbefore(c);
  	detach(c);
  	attach(c);
  	/* swap windows instead of pushing the previous one down */
  	if (c != cold && at) {
  		c->mon->pertag->prevzooms[c->mon->pertag->curtag] = cold;
  		if (cold && at != cold) {
  			detach(cold);
  			cold->next = at->next;
  			at->next = cold;
  		}
  	}
  	focus(c);
  	arrange(c->mon);
  }
  
  int
  main(int argc, char *argv[])
  {
  	if (argc == 2 && !strcmp("-v", argv[1]))
  		die("dwm-"VERSION);
  	else if (argc != 1)
  		die("usage: dwm [-v]");
  	if (!setlocale(LC_CTYPE, "") || !XSupportsLocale())
  		fputs("warning: no locale support\n", stderr);
  	if (!(dpy = XOpenDisplay(NULL)))
  		die("dwm: cannot open display");
  	if (!(xcon = XGetXCBConnection(dpy)))
  		die("dwm: cannot get xcb connection\n");
  	checkotherwm();
  	XrmInitialize();
  	loadxrdb();
  	setup();
  #ifdef __OpenBSD__
  	if (pledge("stdio rpath proc exec ps", NULL) == -1)
  		die("pledge");
  #endif /* __OpenBSD__ */
  	scan();
  	runautostart();
  	run();
  	if (restart)
  		execvp(argv[0], argv);
  	cleanup();
  	XCloseDisplay(dpy);
  	return EXIT_SUCCESS;
  }
  