NixOS/Suckless/dwm/dwm-lebowski.patch

diff --git a/config.def.h b/config.def.h
index 9efa774..17ee062 100644
--- a/config.def.h
+++ b/config.def.h
@@ -2,9 +2,17 @@
 
 /* appearance */
 static const unsigned int borderpx  = 1;        /* border pixel of windows */
+static const unsigned int gappx     = 5;        /* gaps between windows */
 static const unsigned int snap      = 32;       /* snap pixel */
 static const int showbar            = 1;        /* 0 means no bar */
 static const int topbar             = 1;        /* 0 means bottom bar */
+/*  Display modes of the tab bar: never shown, always shown, shown only in  */
+/*  monocle mode in the presence of several windows.                        */
+/*  Modes after showtab_nmodes are disabled.                                */
+enum showtab_modes { showtab_never, showtab_auto, showtab_nmodes, showtab_always};
+static const int showtab			= showtab_auto;        /* Default tab bar show mode */
+static const int toptab				= False;               /* False means bottom tab bar */
+
 static const char *fonts[]          = { "monospace:size=10" };
 static const char dmenufont[]       = "monospace:size=10";
 static const char col_gray1[]       = "#222222";
@@ -44,13 +52,21 @@ static const Layout layouts[] = {
 	{ "[M]",      monocle },
 };
 
+/* default layout per tag */
+/* 0 = tile, 1 = floating, 2 = monocle */
+static int def_layouts[1 + LENGTH(tags)] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 };
+
 /* key definitions */
 #define MODKEY Mod1Mask
+#define ALTMOD Mod4Mask
 #define TAGKEYS(KEY,TAG) \
 	{ MODKEY,                       KEY,      view,           {.ui = 1 << TAG} }, \
 	{ MODKEY|ControlMask,           KEY,      toggleview,     {.ui = 1 << TAG} }, \
 	{ MODKEY|ShiftMask,             KEY,      tag,            {.ui = 1 << TAG} }, \
-	{ MODKEY|ControlMask|ShiftMask, KEY,      toggletag,      {.ui = 1 << TAG} },
+	{ MODKEY|ControlMask|ShiftMask, KEY,      toggletag,      {.ui = 1 << TAG} }, \
+	{ ALTMOD,                       KEY,      focusnthmon,    {.i  = TAG } }, \
+	{ ALTMOD|ShiftMask,             KEY,      tagnthmon,      {.i  = TAG } },
+#define HOLDKEY 0 // replace 0 with the keysym to activate holdbar
 
 /* helper for spawning shell commands in the pre dwm-5.0 fashion */
 #define SHCMD(cmd) { .v = (const char*[]){ "/bin/sh", "-c", cmd, NULL } }
@@ -65,6 +81,7 @@ static const Key keys[] = {
 	{ MODKEY,                       XK_p,      spawn,          {.v = dmenucmd } },
 	{ MODKEY|ShiftMask,             XK_Return, spawn,          {.v = termcmd } },
 	{ MODKEY,                       XK_b,      togglebar,      {0} },
+	{ MODKEY,                       XK_w,      tabmode,        {-1} },
 	{ MODKEY,                       XK_j,      focusstack,     {.i = +1 } },
 	{ MODKEY,                       XK_k,      focusstack,     {.i = -1 } },
 	{ MODKEY,                       XK_i,      incnmaster,     {.i = +1 } },
@@ -79,12 +96,21 @@ static const Key keys[] = {
 	{ MODKEY,                       XK_m,      setlayout,      {.v = &layouts[2]} },
 	{ MODKEY,                       XK_space,  setlayout,      {0} },
 	{ MODKEY|ShiftMask,             XK_space,  togglefloating, {0} },
+	{ MODKEY|ShiftMask,             XK_f,      togglefullscr,  {0} },
 	{ MODKEY,                       XK_0,      view,           {.ui = ~0 } },
 	{ MODKEY|ShiftMask,             XK_0,      tag,            {.ui = ~0 } },
 	{ MODKEY,                       XK_comma,  focusmon,       {.i = -1 } },
 	{ MODKEY,                       XK_period, focusmon,       {.i = +1 } },
 	{ MODKEY|ShiftMask,             XK_comma,  tagmon,         {.i = -1 } },
 	{ MODKEY|ShiftMask,             XK_period, tagmon,         {.i = +1 } },
+	{ MODKEY,                       XK_Right,  viewnext,       {0} },
+	{ MODKEY,                       XK_Left,   viewprev,       {0} },
+	{ MODKEY|ShiftMask,             XK_Right,  tagtonext,      {0} },
+	{ MODKEY|ShiftMask,             XK_Left,   tagtoprev,      {0} },
+	{ MODKEY|ShiftMask,             XK_apostrophe, swapmon,   {0} },
+	{ MODKEY,                       XK_minus,  setgaps,        {.i = -1 } },
+	{ MODKEY,                       XK_equal,  setgaps,        {.i = +1 } },
+	{ MODKEY|ShiftMask,             XK_equal,  setgaps,        {.i = 0  } },
 	TAGKEYS(                        XK_1,                      0)
 	TAGKEYS(                        XK_2,                      1)
 	TAGKEYS(                        XK_3,                      2)
@@ -95,6 +121,7 @@ static const Key keys[] = {
 	TAGKEYS(                        XK_8,                      7)
 	TAGKEYS(                        XK_9,                      8)
 	{ MODKEY|ShiftMask,             XK_q,      quit,           {0} },
+	{ 0,                            HOLDKEY,   holdbar,        {0} },
 };
 
 /* button definitions */
@@ -112,5 +139,32 @@ static const Button buttons[] = {
 	{ ClkTagBar,            0,              Button3,        toggleview,     {0} },
 	{ ClkTagBar,            MODKEY,         Button1,        tag,            {0} },
 	{ ClkTagBar,            MODKEY,         Button3,        toggletag,      {0} },
+	{ ClkTabBar,            0,              Button1,        focuswin,       {0} },
 };
 
+static const char *dwmfifo = "/tmp/dwm.fifo";
+static Command commands[] = {
+	{ "dmenu",           spawn,          {.v = dmenucmd} },
+	{ "term",            spawn,          {.v = termcmd} },
+	{ "quit",            quit,           {0} },
+	{ "togglebar",       togglebar,      {0} },
+	{ "focusstack",      focusstack,     .parse = parseplusminus },
+	{ "incnmaster",      incnmaster,     .parse = parseplusminus },
+	{ "setmfact",        setmfact,       .parse = parseplusminus },
+	{ "zoom",            zoom,           {0} },
+	{ "killclient",      killclient,     {0} },
+	{ "setlayout-tiled", setlayout,      {.v = &layouts[0]} },
+	{ "setlayout-float", setlayout,      {.v = &layouts[1]} },
+	{ "setlayout-mono",  setlayout,      {.v = &layouts[2]} },
+	{ "togglelayout",    setlayout,      {0} },
+	{ "togglefloating",  togglefloating, {0} },
+	{ "viewwin",         viewwin,        .parse = parsexid },
+	{ "viewname",        viewname,       .parse = parsestr },
+	{ "viewall",         view,           {.ui = ~0} },
+	{ "focusmon",        focusmon,       .parse = parseplusminus },
+	{ "tagmon",          tagmon,         .parse = parseplusminus },
+	{ "view",            view,           .parse = parsetag },
+	{ "toggleview",      toggleview,     .parse = parsetag },
+	{ "tag",             tag,            .parse = parsetag },
+	{ "toggletag",       toggletag,      .parse = parsetag },
+};
diff --git a/config.mk b/config.mk
index b469a2b..c57985c 100644
--- a/config.mk
+++ b/config.mk
@@ -23,7 +23,7 @@ FREETYPEINC = /usr/include/freetype2
 
 # includes and libs
 INCS = -I${X11INC} -I${FREETYPEINC}
-LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS} ${FREETYPELIBS}
+LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS} ${FREETYPELIBS} -lXcursor
 
 # flags
 CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_XOPEN_SOURCE=700L -DVERSION=\"${VERSION}\" ${XINERAMAFLAGS}
diff --git a/drw.c b/drw.c
index c41e6af..80d2c2d 100644
--- a/drw.c
+++ b/drw.c
@@ -4,6 +4,7 @@
 #include <string.h>
 #include <X11/Xlib.h>
 #include <X11/Xft/Xft.h>
+#include <X11/Xcursor/Xcursor.h>
 
 #include "drw.h"
 #include "util.h"
@@ -425,14 +426,14 @@ drw_font_getexts(Fnt *font, const char *text, unsigned int len, unsigned int *w,
 }
 
 Cur *
-drw_cur_create(Drw *drw, int shape)
+drw_cur_create(Drw *drw, const char *shape)
 {
 	Cur *cur;
 
 	if (!drw || !(cur = ecalloc(1, sizeof(Cur))))
 		return NULL;
 
-	cur->cursor = XCreateFontCursor(drw->dpy, shape);
+	cur->cursor = XcursorLibraryLoadCursor(drw->dpy, shape);
 
 	return cur;
 }
diff --git a/drw.h b/drw.h
index 6471431..22295a3 100644
--- a/drw.h
+++ b/drw.h
@@ -43,7 +43,7 @@ void drw_clr_create(Drw *drw, Clr *dest, const char *clrname);
 Clr *drw_scm_create(Drw *drw, const char *clrnames[], size_t clrcount);
 
 /* Cursor abstraction */
-Cur *drw_cur_create(Drw *drw, int shape);
+Cur *drw_cur_create(Drw *drw, const char *shape);
 void drw_cur_free(Drw *drw, Cur *cursor);
 
 /* Drawing context manipulation */
diff --git a/dwm.1 b/dwm.1
index ddc8321..5903e70 100644
--- a/dwm.1
+++ b/dwm.1
@@ -20,14 +20,22 @@ layout applied.
 Windows are grouped by tags. Each window can be tagged with one or multiple
 tags. Selecting certain tags displays all windows with these tags.
 .P
-Each screen contains a small status bar which displays all available tags, the
-layout, the title of the focused window, and the text read from the root window
-name property, if the screen is focused. A floating window is indicated with an
-empty square and a maximised floating window is indicated with a filled square
-before the windows title.  The selected tags are indicated with a different
-color. The tags of the focused window are indicated with a filled square in the
-top left corner.  The tags which are applied to one or more windows are
-indicated with an empty square in the top left corner.
+Each screen contains two small status bars.
+.P
+One bar displays all available tags, the layout, the title of the focused
+window, and the text read from the root window name property, if the screen is
+focused. A floating window is indicated with an empty square and a maximised
+floating window is indicated with a filled square before the windows title.  The
+selected tags are indicated with a different color. The tags of the focused
+window are indicated with a filled square in the top left corner.  The tags
+which are applied to one or more windows are indicated with an empty square in
+the top left corner.
+.P
+Another bar contains a tab for each window of the current view and allows
+navigation between windows, especially in the monocle mode. The different
+display modes of this bar are described under the Mod1\-w Keybord command
+section.  When a single tag is selected, this tag is indicated in the left corner
+of the tab bar.
 .P
 dwm draws a small border around windows to indicate the focus state.
 .SH OPTIONS
@@ -44,7 +52,8 @@ command.
 .TP
 .B Button1
 click on a tag label to display all windows with that tag, click on the layout
-label toggles between tiled and floating layout.
+label toggles between tiled and floating layout, click on a window name in the
+tab bar brings focus to that window.
 .TP
 .B Button3
 click on a tag label adds/removes all windows with that tag to/from the view.
@@ -110,12 +119,21 @@ Increase master area size.
 .B Mod1\-h
 Decrease master area size.
 .TP
+.B Mod1\-w
+Cycle over the tab bar display modes: never displayed, always displayed,
+displayed only in monocle mode when the view contains more than one window (auto
+mode). Some display modes can be disabled in the configuration, config.h. In
+the default configuration only "never" and "auto" display modes are enabled.
+.TP
 .B Mod1\-Return
 Zooms/cycles focused window to/from master area (tiled layouts only).
 .TP
 .B Mod1\-Shift\-c
 Close focused window.
 .TP
+.B Mod1\-Shift\-f
+Toggle fullscreen for focused window.
+.TP
 .B Mod1\-Shift\-space
 Toggle focused window between tiled and floating state.
 .TP
diff --git a/dwm.c b/dwm.c
index 1443802..08d4517 100644
--- a/dwm.c
+++ b/dwm.c
@@ -21,6 +21,7 @@
  * To understand everything else, start reading main().
  */
 #include <errno.h>
+#include <fcntl.h>
 #include <locale.h>
 #include <signal.h>
 #include <stdarg.h>
@@ -28,10 +29,12 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <poll.h>
+#include <fnmatch.h>
 #include <sys/types.h>
 #include <sys/wait.h>
-#include <X11/cursorfont.h>
 #include <X11/keysym.h>
+#include <X11/XF86keysym.h>
 #include <X11/Xatom.h>
 #include <X11/Xlib.h>
 #include <X11/Xproto.h>
@@ -40,6 +43,7 @@
 #include <X11/extensions/Xinerama.h>
 #endif /* XINERAMA */
 #include <X11/Xft/Xft.h>
+#include <X11/Xcursor/Xcursor.h>
 
 #include "drw.h"
 #include "util.h"
@@ -63,7 +67,7 @@ enum { NetSupported, NetWMName, NetWMState, NetWMCheck,
        NetWMFullscreen, NetActiveWindow, NetWMWindowType,
        NetWMWindowTypeDialog, NetClientList, NetLast }; /* EWMH atoms */
 enum { WMProtocols, WMDelete, WMState, WMTakeFocus, WMLast }; /* default atoms */
-enum { ClkTagBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
+enum { ClkTagBar, ClkTabBar, ClkLtSymbol, ClkStatusText, ClkWinTitle,
        ClkClientWin, ClkRootWin, ClkLast }; /* clicks */
 
 typedef union {
@@ -110,25 +114,36 @@ typedef struct {
 	void (*arrange)(Monitor *);
 } Layout;
 
+#define MAXTABS 50
+
+typedef struct Pertag Pertag;
 struct Monitor {
 	char ltsymbol[16];
 	float mfact;
 	int nmaster;
 	int num;
 	int by;               /* bar geometry */
+	int ty;               /* tab bar geometry */
 	int mx, my, mw, mh;   /* screen size */
 	int wx, wy, ww, wh;   /* window area  */
+	int gappx;            /* gaps between windows */
 	unsigned int seltags;
 	unsigned int sellt;
 	unsigned int tagset[2];
 	int showbar;
+	int showtab;
 	int topbar;
+	int toptab;
 	Client *clients;
 	Client *sel;
 	Client *stack;
 	Monitor *next;
 	Window barwin;
+	Window tabwin;
+	int ntabs;
+	int tab_widths[MAXTABS];
 	const Layout *lt[2];
+	Pertag *pertag;
 };
 
 typedef struct {
@@ -140,9 +155,20 @@ typedef struct {
 	int monitor;
 } Rule;
 
+typedef struct {
+	int x, y, w, h;
+} DwmLogo;
+
+typedef struct {
+	const char *name;
+	void (*func)(const Arg *arg);
+	const Arg arg;
+	int (*parse)(Arg *arg, const char *s, size_t len);
+} Command;
+
 /* function declarations */
 static void applyrules(Client *c);
-static int applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact);
+static int applysizehints(Client *c, int *x, int *y, int *w, int *h, int *bw, int interact);
 static void arrange(Monitor *m);
 static void arrangemon(Monitor *m);
 static void attach(Client *c);
@@ -160,14 +186,20 @@ static void destroynotify(XEvent *e);
 static void detach(Client *c);
 static void detachstack(Client *c);
 static Monitor *dirtomon(int dir);
+static void dispatchcmd(void);
+static Monitor *numtomon(int num);
 static void drawbar(Monitor *m);
 static void drawbars(void);
+static void drawtab(Monitor *m);
+static void drawtabs(void);
 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 focusnthmon(const Arg *arg);
 static void focusstack(const Arg *arg);
+static void focuswin(const Arg* arg);
 static Atom getatomprop(Client *c, Atom prop);
 static int getrootptr(int *x, int *y);
 static long getstate(Window w);
@@ -176,6 +208,7 @@ static void grabbuttons(Client *c, int focused);
 static void grabkeys(void);
 static void incnmaster(const Arg *arg);
 static void keypress(XEvent *e);
+static void keyrelease(XEvent *e);
 static void killclient(const Arg *arg);
 static void manage(Window w, XWindowAttributes *wa);
 static void mappingnotify(XEvent *e);
@@ -183,13 +216,15 @@ static void maprequest(XEvent *e);
 static void monocle(Monitor *m);
 static void motionnotify(XEvent *e);
 static void movemouse(const Arg *arg);
+static unsigned int nexttag(void);
 static Client *nexttiled(Client *c);
 static void pop(Client *c);
+static unsigned int prevtag(void);
 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 resize(Client *c, int x, int y, int w, int h, int bw, int interact);
+static void resizeclient(Client *c, int x, int y, int w, int h, int bw);
 static void resizemouse(const Arg *arg);
 static void restack(Monitor *m);
 static void run(void);
@@ -199,23 +234,31 @@ 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 setgaps(const Arg *arg);
 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 spawn(const Arg *arg);
+static void tabmode(const Arg *arg);
 static void tag(const Arg *arg);
 static void tagmon(const Arg *arg);
+static void tagnthmon(const Arg *arg);
+static void tagtonext(const Arg *arg);
+static void tagtoprev(const Arg *arg);
 static void tile(Monitor *m);
 static void togglebar(const Arg *arg);
+static void holdbar(const Arg *arg);
 static void togglefloating(const Arg *arg);
+static void togglefullscr(const Arg *arg);
 static void toggletag(const Arg *arg);
 static void toggleview(const Arg *arg);
 static void unfocus(Client *c, int setfocus);
 static void unmanage(Client *c, int destroyed);
 static void unmapnotify(XEvent *e);
 static void updatebarpos(Monitor *m);
+static void updateholdbarpos(Monitor *m);
 static void updatebars(void);
 static void updateclientlist(void);
 static int updategeom(void);
@@ -226,12 +269,17 @@ static void updatetitle(Client *c);
 static void updatewindowtype(Client *c);
 static void updatewmhints(Client *c);
 static void view(const Arg *arg);
+static void viewname(const Arg *arg);
+static void viewwin(const Arg *arg);
+static void viewnext(const Arg *arg);
+static void viewprev(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);
+static void swapmon(const Arg *arg);
 
 /* variables */
 static const char broken[] = "broken";
@@ -239,11 +287,14 @@ static char stext[256];
 static int screen;
 static int sw, sh;           /* X display screen geometry width, height */
 static int bh;               /* bar height */
+static int th = 0;           /* tab bar geometry */
 static int lrpad;            /* sum of left and right padding for text */
+static int dwmlogowdth = 74; /* dwm logo width + left/right padding */
 static int (*xerrorxlib)(Display *, XErrorEvent *);
 static unsigned int numlockmask = 0;
 static void (*handler[LASTEvent]) (XEvent *) = {
 	[ButtonPress] = buttonpress,
+	[ButtonRelease] = keyrelease,
 	[ClientMessage] = clientmessage,
 	[ConfigureRequest] = configurerequest,
 	[ConfigureNotify] = configurenotify,
@@ -251,6 +302,7 @@ static void (*handler[LASTEvent]) (XEvent *) = {
 	[EnterNotify] = enternotify,
 	[Expose] = expose,
 	[FocusIn] = focusin,
+	[KeyRelease] = keyrelease,
 	[KeyPress] = keypress,
 	[MappingNotify] = mappingnotify,
 	[MapRequest] = maprequest,
@@ -266,14 +318,120 @@ static Display *dpy;
 static Drw *drw;
 static Monitor *mons, *selmon;
 static Window root, wmcheckwin;
+static int fifofd;
+
+static int parsetag(Arg *a, const char *s, size_t len);
+static int parseplusminus(Arg *a, const char *s, size_t len);
+static int parsexid(Arg *a, const char *s, size_t len);
+static int parsestr(Arg *a, const char *s, size_t len);
 
 /* configuration, allows nested code to access above variables */
 #include "config.h"
 
+static int parsetag(Arg *a, const char *s, size_t len)
+{
+	char *end;
+	unsigned int rv = strtoul(s, &end, 10);
+	if (end == s)
+		a->ui = 0;
+	else if (rv > LENGTH(tags))
+		return 0;
+	else if (rv == 0)
+		a->ui = ~0U;
+	else
+		a->ui = 1U << (rv - 1);
+
+	return 1;
+}
+
+static int parseplusminus(Arg *a, const char *s, size_t len)
+{
+	if (*s == '+')
+		a->i = +1;
+	else if (*s == '-')
+		a->i = -1;
+	else
+		return 0;
+	return 1;
+}
+
+static int parsexid(Arg *a, const char *s, size_t len)
+{
+	char *end;
+	unsigned long long sv = strtoull(s, &end, 0);
+
+	if (end == s)
+		return 0;
+
+	a->v = (void *)(intptr_t)sv;
+	return 1;
+}
+
+static int parsestr(Arg *a, const char *s, size_t len)
+{
+	while (*s == ' ' || *s == '\t')
+		s++;
+	a->v = s;
+	return 1;
+}
+
+struct Pertag {
+	unsigned int curtag, prevtag; /* current and previous tag */
+	int nmasters[LENGTH(tags) + 1]; /* number of windows in master area */
+	float mfacts[LENGTH(tags) + 1]; /* mfacts per tag */
+	unsigned int sellts[LENGTH(tags) + 1]; /* selected layouts */
+	const Layout *ltidxs[LENGTH(tags) + 1][2]; /* matrix of tags and layouts indexes  */
+	/* int showbars[LENGTH(tags) + 1]; */ /* disabled for holdbar compat */
+};
+
 /* compile-time check if all tags fit into an unsigned int bit array. */
 struct NumTags { char limitexceeded[LENGTH(tags) > 31 ? -1 : 1]; };
 
 /* function implementations */
+void
+holdbar(const Arg *arg)
+{
+	if (selmon->showbar)
+		return;
+	selmon->showbar = 2;
+	updateholdbarpos(selmon);
+	XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
+}
+
+void
+keyrelease(XEvent *e)
+{
+	if (XEventsQueued(dpy, QueuedAfterReading)) {
+		XEvent ne;
+		XPeekEvent(dpy, &ne);
+
+		if (ne.type == KeyPress && ne.xkey.time == e->xkey.time &&
+				ne.xkey.keycode == e->xkey.keycode) {
+			XNextEvent(dpy, &ne);
+			return;
+		}
+	}
+	if (e->xkey.keycode == XKeysymToKeycode(dpy, HOLDKEY) && selmon->showbar == 2) {
+		selmon->showbar = 0;
+		updateholdbarpos(selmon);
+		XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
+		arrange(selmon);
+	}
+}
+
+void
+updateholdbarpos(Monitor *m)
+{
+	m->wy = m->my;
+	m->wh = m->mh;
+	if (m->showbar) {
+		m->by = m->topbar ? m->wy : m->wy + m->wh - bh;
+		m->wy = m->topbar ? m->wy - bh + bh : m->wy;
+	} else {
+		m->by = -bh;
+	}
+}
+
 void
 applyrules(Client *c)
 {
@@ -311,7 +469,7 @@ applyrules(Client *c)
 }
 
 int
-applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact)
+applysizehints(Client *c, int *x, int *y, int *w, int *h, int *bw, int interact)
 {
 	int baseismin;
 	Monitor *m = c->mon;
@@ -324,18 +482,18 @@ applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact)
 			*x = sw - WIDTH(c);
 		if (*y > sh)
 			*y = sh - HEIGHT(c);
-		if (*x + *w + 2 * c->bw < 0)
+		if (*x + *w + 2 * *bw < 0)
 			*x = 0;
-		if (*y + *h + 2 * c->bw < 0)
+		if (*y + *h + 2 * *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)
+		if (*x + *w + 2 * *bw <= m->wx)
 			*x = m->wx;
-		if (*y + *h + 2 * c->bw <= m->wy)
+		if (*y + *h + 2 * *bw <= m->wy)
 			*y = m->wy;
 	}
 	if (*h < bh)
@@ -375,7 +533,7 @@ applysizehints(Client *c, int *x, int *y, int *w, int *h, int interact)
 		if (c->maxh)
 			*h = MIN(*h, c->maxh);
 	}
-	return *x != c->x || *y != c->y || *w != c->w || *h != c->h;
+	return *x != c->x || *y != c->y || *w != c->w || *h != c->h || *bw != c->bw;
 }
 
 void
@@ -393,11 +551,19 @@ arrange(Monitor *m)
 }
 
 void
-arrangemon(Monitor *m)
-{
+arrangemon(Monitor *m) {
+	Client *c;
+
+	updatebarpos(m);
+	XMoveResizeWindow(dpy, m->tabwin, m->wx, m->ty, m->ww, th);
 	strncpy(m->ltsymbol, m->lt[m->sellt]->symbol, sizeof m->ltsymbol);
 	if (m->lt[m->sellt]->arrange)
 		m->lt[m->sellt]->arrange(m);
+	else
+		/* <>< floating layout; add borders */
+		for (c = selmon->clients; c; c = c->next)
+			if (ISVISIBLE(c) && c->bw == 0)
+				resize(c, c->x, c->y, c->w - 2*borderpx, c->h - 2*borderpx, borderpx, 0);
 }
 
 void
@@ -432,9 +598,16 @@ buttonpress(XEvent *e)
 	}
 	if (ev->window == selmon->barwin) {
 		i = x = 0;
-		do
+		x = dwmlogowdth; /* dwm logo width */
+		unsigned int occ = 0;
+		for(c = m->clients; c; c=c->next)
+			occ |= c->tags == TAGMASK ? 0 : c->tags;
+		do {
+			/* Do not reserve space for vacant tags */
+			if (!(occ & 1 << i || m->tagset[m->seltags] & 1 << i))
+				continue;
 			x += TEXTW(tags[i]);
-		while (ev->x >= x && ++i < LENGTH(tags));
+		} while (ev->x >= x && ++i < LENGTH(tags));
 		if (i < LENGTH(tags)) {
 			click = ClkTagBar;
 			arg.ui = 1 << i;
@@ -444,7 +617,24 @@ buttonpress(XEvent *e)
 			click = ClkStatusText;
 		else
 			click = ClkWinTitle;
-	} else if ((c = wintoclient(ev->window))) {
+	}
+	if(ev->window == selmon->tabwin) {
+		i = 0; x = 0;
+		for(c = selmon->clients; c; c = c->next){
+			if(!ISVISIBLE(c)) continue;
+			x += selmon->tab_widths[i];
+			if (ev->x > x)
+				++i;
+			else
+				break;
+			if(i >= m->ntabs) break;
+		}
+		if(c) {
+			click = ClkTabBar;
+			arg.ui = i;
+		}
+	}
+	else if((c = wintoclient(ev->window))) {
 		focus(c);
 		restack(selmon);
 		XAllowEvents(dpy, ReplayPointer, CurrentTime);
@@ -452,8 +642,9 @@ buttonpress(XEvent *e)
 	}
 	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 && buttons[i].arg.i == 0 ? &arg : &buttons[i].arg);
+		&& CLEANMASK(buttons[i].mask) == CLEANMASK(ev->state)){
+			buttons[i].func(((click == ClkTagBar || click == ClkTabBar) && buttons[i].arg.i == 0) ? &arg : &buttons[i].arg);
+		}
 }
 
 void
@@ -493,6 +684,7 @@ cleanup(void)
 	XSync(dpy, False);
 	XSetInputFocus(dpy, PointerRoot, RevertToPointerRoot, CurrentTime);
 	XDeleteProperty(dpy, root, netatom[NetActiveWindow]);
+	close(fifofd);
 }
 
 void
@@ -508,6 +700,8 @@ cleanupmon(Monitor *mon)
 	}
 	XUnmapWindow(dpy, mon->barwin);
 	XDestroyWindow(dpy, mon->barwin);
+	XUnmapWindow(dpy, mon->tabwin);
+	XDestroyWindow(dpy, mon->tabwin);
 	free(mon);
 }
 
@@ -516,6 +710,7 @@ clientmessage(XEvent *e)
 {
 	XClientMessageEvent *cme = &e->xclient;
 	Client *c = wintoclient(cme->window);
+	unsigned int i;
 
 	if (!c)
 		return;
@@ -525,8 +720,15 @@ clientmessage(XEvent *e)
 			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 != selmon->sel && !c->isurgent)
-			seturgent(c, 1);
+		for (i = 0; i < LENGTH(tags) && !((1 << i) & c->tags); i++);
+		if (i < LENGTH(tags)) {
+			const Arg a = {.ui = 1 << i};
+			selmon = c->mon;
+			view(&a);
+			focus(c);
+			XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w/2, c->h/2);
+			restack(selmon);
+		}
 	}
 }
 
@@ -568,7 +770,7 @@ configurenotify(XEvent *e)
 			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);
+						resizeclient(c, m->mx, m->my, m->mw, m->mh, 0);
 				XMoveResizeWindow(dpy, m->barwin, m->wx, m->by, m->ww, bh);
 			}
 			focus(NULL);
@@ -633,16 +835,35 @@ Monitor *
 createmon(void)
 {
 	Monitor *m;
+	unsigned int i;
 
 	m = ecalloc(1, sizeof(Monitor));
 	m->tagset[0] = m->tagset[1] = 1;
 	m->mfact = mfact;
 	m->nmaster = nmaster;
 	m->showbar = showbar;
+	m->showtab = showtab;
 	m->topbar = topbar;
+	m->gappx = gappx;
+	m->toptab = toptab;
+	m->ntabs = 0;
 	m->lt[0] = &layouts[0];
 	m->lt[1] = &layouts[1 % LENGTH(layouts)];
 	strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
+	m->pertag = ecalloc(1, sizeof(Pertag));
+	m->pertag->curtag = m->pertag->prevtag = 1;
+
+	for (i = 0; i <= LENGTH(tags); i++) {
+		m->pertag->nmasters[i] = m->nmaster;
+		m->pertag->mfacts[i] = m->mfact;
+
+		m->pertag->ltidxs[i][0] = &layouts[def_layouts[i % LENGTH(def_layouts)] % LENGTH(layouts)];
+		m->pertag->ltidxs[i][1] = m->lt[1];
+		m->pertag->sellts[i] = m->sellt;
+
+		/* m->pertag->showbars[i] = m->showbar; */
+	}
+
 	return m;
 }
 
@@ -694,10 +915,88 @@ dirtomon(int dir)
 	return m;
 }
 
+Monitor *
+numtomon(int num)
+{
+	Monitor *m = NULL;
+	int i = 0;
+
+	for(m = mons, i=0; m->next && i < num; m = m->next){
+		i++;
+	}
+	return m;
+}
+
+static const char *
+strnprefix(const char *haystack, size_t hlen, const char *needle)
+{
+	while (*needle && hlen--) {
+		if (*haystack++ != *needle++)
+			return 0;
+	}
+
+	if (*needle)
+		return NULL;
+	return haystack;
+}
+
+void
+dispatchcmd(void)
+{
+	static char buf[BUFSIZ];
+	static char * const bend = 1[&buf];
+	static char *bw = buf;
+	static int longline = 0;
+	ssize_t n;
+	char *nl;
+	char *pl = buf;
+	char *dend;
+	Command *i;
+
+	n = read(fifofd, bw, bend - bw);
+	if (n == -1)
+		die("Failed to read() from DWM fifo %s:", dwmfifo);
+	dend = bw + n;
+
+	if (longline) {
+		if (!(nl = memchr(bw, '\n', dend - bw)))
+			return;
+		bw = pl = nl + 1;
+		longline = 0;
+	}
+
+	while ((nl = memchr(bw, '\n', dend - bw))) {
+		for (i = commands; i < 1[&commands]; i++) {
+			const char *arg;
+
+			if (!(arg = strnprefix(pl, nl - pl, i->name)))
+				continue;
+			*nl = '\0';
+			if (i->parse) {
+				Arg a;
+				if (i->parse(&a, arg, nl - arg))
+					i->func(&a);
+			} else {
+				i->func(&i->arg);
+			}
+
+			break;
+		}
+		bw = pl = nl + 1;
+	}
+
+	memmove(buf, pl, dend - pl);
+	bw = dend - pl + buf;
+
+	if (bw == bend)
+		bw = buf;
+}
+
 void
 drawbar(Monitor *m)
 {
 	int x, w, tw = 0;
+	int stroke = 4, letterHeight = bh - 4;
 	int boxs = drw->fonts->h / 9;
 	int boxw = drw->fonts->h / 6 + 2;
 	unsigned int i, occ = 0, urg = 0;
@@ -714,19 +1013,43 @@ drawbar(Monitor *m)
 	}
 
 	for (c = m->clients; c; c = c->next) {
-		occ |= c->tags;
+		occ |= c->tags == TAGMASK ? 0 : c->tags;
 		if (c->isurgent)
 			urg |= c->tags;
 	}
-	x = 0;
+
+	/* use colored scheme for visibility */
+	drw_setscheme(drw, scheme[SchemeNorm]);
+
+	/* draw dark background for logo */
+	drw_rect(drw, 0, 0, dwmlogowdth, bh, 1, 1);
+
+	/* draw dwm logo */
+	const DwmLogo dwmLogo[] = {
+		{ 12,  9, stroke, letterHeight / 2 }, /* d: left vertical */
+		{ 12, 15,     35, stroke           }, /* d: bottom horizontal */
+		{ 25,  1, stroke, letterHeight     }, /* d: right vertical */
+		{ 12,  7,     15, stroke           }, /* d: top horizontal */
+		{ 34,  7, stroke, letterHeight / 2 }, /* w: center vertical */
+		{ 43,  7, stroke, letterHeight / 2 }, /* w: right vertical */
+		{ 43,  7,     22, stroke           }, /* m: top horizontal */
+		{ 52, 11, stroke, letterHeight / 2 }, /* m: center vertical */
+		{ 61, 11, stroke, letterHeight / 2 }  /* m: right vertical */
+	};
+
+	for (int i = 0; i < LENGTH(dwmLogo); i++) {
+		drw_rect(drw, dwmLogo[i].x, dwmLogo[i].y, dwmLogo[i].w, dwmLogo[i].h, 1, 0);
+	}
+
+	/* start drawing tags after logo */
+	x = dwmlogowdth;
 	for (i = 0; i < LENGTH(tags); i++) {
+		/* Do not draw vacant tags */
+		if(!(occ & 1 << i || m->tagset[m->seltags] & 1 << i))
+			continue;
 		w = TEXTW(tags[i]);
 		drw_setscheme(drw, scheme[m->tagset[m->seltags] & 1 << i ? SchemeSel : SchemeNorm]);
 		drw_text(drw, x, 0, w, bh, lrpad / 2, tags[i], urg & 1 << i);
-		if (occ & 1 << i)
-			drw_rect(drw, x + boxs, boxs, boxw, boxw,
-				m == selmon && selmon->sel && selmon->sel->tags & 1 << i,
-				urg & 1 << i);
 		x += w;
 	}
 	w = TEXTW(m->ltsymbol);
@@ -735,7 +1058,7 @@ drawbar(Monitor *m)
 
 	if ((w = m->ww - tw - x) > bh) {
 		if (m->sel) {
-			drw_setscheme(drw, scheme[m == selmon ? SchemeSel : SchemeNorm]);
+			drw_setscheme(drw, scheme[SchemeNorm]);
 			drw_text(drw, x, 0, w, bh, lrpad / 2, m->sel->name, 0);
 			if (m->sel->isfloating)
 				drw_rect(drw, x + boxs, boxs, boxw, boxw, m->sel->isfixed, 0);
@@ -756,6 +1079,105 @@ drawbars(void)
 		drawbar(m);
 }
 
+void
+drawtabs(void) {
+	Monitor *m;
+
+	for(m = mons; m; m = m->next)
+		drawtab(m);
+}
+
+static int
+cmpint(const void *p1, const void *p2) {
+  /* The actual arguments to this function are "pointers to
+     pointers to char", but strcmp(3) arguments are "pointers
+     to char", hence the following cast plus dereference */
+  return *((int*) p1) > * (int*) p2;
+}
+
+
+void
+drawtab(Monitor *m) {
+	Client *c;
+	int i;
+	int itag = -1;
+	char view_info[50];
+	int view_info_w = 0;
+	int sorted_label_widths[MAXTABS];
+	int tot_width;
+	int maxsize = bh;
+	int x = 0;
+	int w = 0;
+
+	//view_info: indicate the tag which is displayed in the view
+	for(i = 0; i < LENGTH(tags); ++i){
+	  if((selmon->tagset[selmon->seltags] >> i) & 1) {
+	    if(itag >=0){ //more than one tag selected
+	      itag = -1;
+	      break;
+	    }
+	    itag = i;
+	  }
+	}
+
+	if(0 <= itag  && itag < LENGTH(tags)){
+	  snprintf(view_info, sizeof view_info, "[%s]", tags[itag]);
+	} else {
+	  strncpy(view_info, "[...]", sizeof view_info);
+	}
+	view_info[sizeof(view_info) - 1 ] = 0;
+	view_info_w = TEXTW(view_info);
+	tot_width = view_info_w;
+
+	/* Calculates number of labels and their width */
+	m->ntabs = 0;
+	for(c = m->clients; c; c = c->next){
+	  if(!ISVISIBLE(c)) continue;
+	  m->tab_widths[m->ntabs] = TEXTW(c->name);
+	  tot_width += m->tab_widths[m->ntabs];
+	  ++m->ntabs;
+	  if(m->ntabs >= MAXTABS) break;
+	}
+
+	if(tot_width > m->ww){ //not enough space to display the labels, they need to be truncated
+	  memcpy(sorted_label_widths, m->tab_widths, sizeof(int) * m->ntabs);
+	  qsort(sorted_label_widths, m->ntabs, sizeof(int), cmpint);
+	  tot_width = view_info_w;
+	  for(i = 0; i < m->ntabs; ++i){
+	    if(tot_width + (m->ntabs - i) * sorted_label_widths[i] > m->ww)
+	      break;
+	    tot_width += sorted_label_widths[i];
+	  }
+	  maxsize = (m->ww - tot_width) / (m->ntabs - i);
+	} else{
+	  maxsize = m->ww;
+	}
+	i = 0;
+	for(c = m->clients; c; c = c->next){
+	  if(!ISVISIBLE(c)) continue;
+	  if(i >= m->ntabs) break;
+	  if(m->tab_widths[i] >  maxsize) m->tab_widths[i] = maxsize;
+	  w = m->tab_widths[i];
+	  drw_setscheme(drw, scheme[(c == m->sel) ? SchemeSel : SchemeNorm]);
+	  drw_text(drw, x, 0, w, th, 0, c->name, 0);
+	  x += w;
+	  ++i;
+	}
+
+	drw_setscheme(drw, scheme[SchemeNorm]);
+
+	/* cleans interspace between window names and current viewed tag label */
+	w = m->ww - view_info_w - x;
+	drw_text(drw, x, 0, w, th, 0, "", 0);
+
+	/* view info */
+	x += w;
+	w = view_info_w;
+	drw_text(drw, x, 0, w, th, 0, view_info, 0);
+
+	drw_map(drw, m->tabwin, 0, 0, m->ww, th);
+}
+
 void
 enternotify(XEvent *e)
 {
@@ -781,8 +1203,10 @@ expose(XEvent *e)
 	Monitor *m;
 	XExposeEvent *ev = &e->xexpose;
 
-	if (ev->count == 0 && (m = wintomon(ev->window)))
+	if(ev->count == 0 && (m = wintomon(ev->window))){
 		drawbar(m);
+		drawtab(m);
+	}
 }
 
 void
@@ -808,6 +1232,7 @@ focus(Client *c)
 	}
 	selmon->sel = c;
 	drawbars();
+	drawtabs();
 }
 
 /* there are some broken focus acquiring clients needing extra handling */
@@ -830,6 +1255,25 @@ focusmon(const Arg *arg)
 	if ((m = dirtomon(arg->i)) == selmon)
 		return;
 	unfocus(selmon->sel, 0);
+	XWarpPointer(dpy, None, m->barwin, 0, 0, 0, 0, m->mw / 2, m->mh / 2);
+	selmon = m;
+	focus(NULL);
+	if (selmon->sel)
+		XWarpPointer(dpy, None, selmon->sel->win, 0, 0, 0, 0, selmon->sel->w/2, selmon->sel->h/2);
+}
+
+void
+focusnthmon(const Arg *arg)
+{
+	Monitor *m;
+
+	if (!mons->next)
+		return;
+
+	if ((m = numtomon(arg->i)) == selmon)
+		return;
+	unfocus(selmon->sel, 0);
+	XWarpPointer(dpy, None, m->barwin, 0, 0, 0, 0, m->mw / 2, m->mh / 2);
 	selmon = m;
 	focus(NULL);
 }
@@ -857,9 +1301,23 @@ focusstack(const Arg *arg)
 	if (c) {
 		focus(c);
 		restack(selmon);
+		XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w/2, c->h/2);
 	}
 }
 
+void
+focuswin(const Arg* arg){
+  int iwin = arg->i;
+  Client* c = NULL;
+  for(c = selmon->clients; c && (iwin || !ISVISIBLE(c)) ; c = c->next){
+    if(ISVISIBLE(c)) --iwin;
+  };
+  if(c) {
+    focus(c);
+    restack(selmon);
+  }
+}
+
 Atom
 getatomprop(Client *c, Atom prop)
 {
@@ -979,7 +1437,7 @@ grabkeys(void)
 void
 incnmaster(const Arg *arg)
 {
-	selmon->nmaster = MAX(selmon->nmaster + arg->i, 0);
+	selmon->nmaster = selmon->pertag->nmasters[selmon->pertag->curtag] = MAX(selmon->nmaster + arg->i, 0);
 	arrange(selmon);
 }
 
@@ -1067,6 +1525,8 @@ manage(Window w, XWindowAttributes *wa)
 	updatewindowtype(c);
 	updatesizehints(c);
 	updatewmhints(c);
+	c->x = c->mon->mx + (c->mon->mw - WIDTH(c)) / 2;
+	c->y = c->mon->my + (c->mon->mh - HEIGHT(c)) / 2;
 	XSelectInput(dpy, w, EnterWindowMask|FocusChangeMask|PropertyChangeMask|StructureNotifyMask);
 	grabbuttons(c, 0);
 	if (!c->isfloating)
@@ -1084,6 +1544,8 @@ manage(Window w, XWindowAttributes *wa)
 	c->mon->sel = c;
 	arrange(c->mon);
 	XMapWindow(dpy, c->win);
+	if (c && c->mon == selmon)
+		XWarpPointer(dpy, None, c->win, 0, 0, 0, 0, c->w/2, c->h/2);
 	focus(NULL);
 }
 
@@ -1121,7 +1583,7 @@ monocle(Monitor *m)
 	if (n > 0) /* override layout symbol */
 		snprintf(m->ltsymbol, sizeof m->ltsymbol, "[%d]", n);
 	for (c = nexttiled(m->clients); c; c = nexttiled(c->next))
-		resize(c, m->wx, m->wy, m->ww - 2 * c->bw, m->wh - 2 * c->bw, 0);
+		resize(c, m->wx, m->wy, m->ww, m->wh, 0, 0);
 }
 
 void
@@ -1189,7 +1651,7 @@ movemouse(const Arg *arg)
 			&& (abs(nx - c->x) > snap || abs(ny - c->y) > snap))
 				togglefloating(NULL);
 			if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
-				resize(c, nx, ny, c->w, c->h, 1);
+				resize(c, nx, ny, c->w, c->h, c->bw, 1);
 			break;
 		}
 	} while (ev.type != ButtonRelease);
@@ -1201,6 +1663,29 @@ movemouse(const Arg *arg)
 	}
 }
 
+unsigned int
+nexttag(void)
+{
+	unsigned int seltag = selmon->tagset[selmon->seltags];
+	unsigned int usedtags = 0;
+	Client *c = selmon->clients;
+
+	if (!c)
+		return seltag;
+
+	/* skip vacant tags */
+	do {
+		usedtags |= c->tags;
+		c = c->next;
+	} while (c);
+
+	do {
+		seltag = seltag == (1 << (LENGTH(tags) - 1)) ? 1 : seltag << 1;
+	} while (!(seltag & usedtags));
+
+	return seltag;
+}
+
 Client *
 nexttiled(Client *c)
 {
@@ -1217,6 +1702,28 @@ pop(Client *c)
 	arrange(c->mon);
 }
 
+unsigned int
+prevtag(void)
+{
+	unsigned int seltag = selmon->tagset[selmon->seltags];
+	unsigned int usedtags = 0;
+	Client *c = selmon->clients;
+	if (!c)
+		return seltag;
+
+	/* skip vacant tags */
+	do {
+		usedtags |= c->tags;
+		c = c->next;
+	} while (c);
+
+	do {
+		seltag = seltag == 1 ? (1 << (LENGTH(tags) - 1)) : seltag >> 1;
+	} while (!(seltag & usedtags));
+
+	return seltag;
+}
+
 void
 propertynotify(XEvent *e)
 {
@@ -1242,12 +1749,14 @@ propertynotify(XEvent *e)
 		case XA_WM_HINTS:
 			updatewmhints(c);
 			drawbars();
+			drawtabs();
 			break;
 		}
 		if (ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 			updatetitle(c);
 			if (c == c->mon->sel)
 				drawbar(c->mon);
+			drawtab(c->mon);
 		}
 		if (ev->atom == netatom[NetWMWindowType])
 			updatewindowtype(c);
@@ -1275,14 +1784,14 @@ recttomon(int x, int y, int w, int h)
 }
 
 void
-resize(Client *c, int x, int y, int w, int h, int interact)
+resize(Client *c, int x, int y, int w, int h, int bw, int interact)
 {
-	if (applysizehints(c, &x, &y, &w, &h, interact))
-		resizeclient(c, x, y, w, h);
+	if (applysizehints(c, &x, &y, &w, &h, &bw, interact))
+		resizeclient(c, x, y, w, h, bw);
 }
 
 void
-resizeclient(Client *c, int x, int y, int w, int h)
+resizeclient(Client *c, int x, int y, int w, int h, int bw)
 {
 	XWindowChanges wc;
 
@@ -1290,7 +1799,7 @@ resizeclient(Client *c, int x, int y, int w, int h)
 	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;
+	c->oldbw = c->bw; c->bw = wc.border_width = bw;
 	XConfigureWindow(dpy, c->win, CWX|CWY|CWWidth|CWHeight|CWBorderWidth, &wc);
 	configure(c);
 	XSync(dpy, False);
@@ -1339,7 +1848,7 @@ resizemouse(const Arg *arg)
 					togglefloating(NULL);
 			}
 			if (!selmon->lt[selmon->sellt]->arrange || c->isfloating)
-				resize(c, c->x, c->y, nw, nh, 1);
+				resize(c, c->x, c->y, nw, nh, c->bw, 1);
 			break;
 		}
 	} while (ev.type != ButtonRelease);
@@ -1361,6 +1870,7 @@ restack(Monitor *m)
 	XWindowChanges wc;
 
 	drawbar(m);
+	drawtab(m);
 	if (!m->sel)
 		return;
 	if (m->sel->isfloating || !m->lt[m->sellt]->arrange)
@@ -1378,15 +1888,31 @@ restack(Monitor *m)
 	while (XCheckMaskEvent(dpy, EnterWindowMask, &ev));
 }
 
+static Bool evpredicate()
+{
+	return True;
+}
+
 void
 run(void)
 {
 	XEvent ev;
+	struct pollfd fds[2] = {
+		{ .events = POLLIN },
+		{ .fd = fifofd, .events = POLLIN }
+	};
 	/* main event loop */
 	XSync(dpy, False);
-	while (running && !XNextEvent(dpy, &ev))
-		if (handler[ev.type])
-			handler[ev.type](&ev); /* call handler */
+	fds[0].fd = ConnectionNumber(dpy);
+	while (running) {
+		(void)poll(fds, 1[&fds] - fds, -1);
+		if (fds[1].revents & POLLIN)
+			dispatchcmd();
+		if (fds[0].revents & POLLIN)
+			while (XCheckIfEvent(dpy, &ev, evpredicate, NULL))
+				if (handler[ev.type])
+					handler[ev.type](&ev); /* call handler */
+	}
 }
 
 void
@@ -1486,33 +2012,41 @@ setfullscreen(Client *c, int fullscreen)
 			PropModeReplace, (unsigned char*)&netatom[NetWMFullscreen], 1);
 		c->isfullscreen = 1;
 		c->oldstate = c->isfloating;
-		c->oldbw = c->bw;
-		c->bw = 0;
 		c->isfloating = 1;
-		resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh);
+		resizeclient(c, c->mon->mx, c->mon->my, c->mon->mw, c->mon->mh, 0);
 		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->isfloating = c->oldstate;
-		c->bw = c->oldbw;
 		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);
+		c->bw = c->oldbw;
+		resizeclient(c, c->x, c->y, c->w, c->h, c->bw);
 		arrange(c->mon);
 	}
 }
 
+void
+setgaps(const Arg *arg)
+{
+	if ((arg->i == 0) || (selmon->gappx + arg->i < 0))
+		selmon->gappx = 0;
+	else
+		selmon->gappx += arg->i;
+	arrange(selmon);
+}
+
 void
 setlayout(const Arg *arg)
 {
 	if (!arg || !arg->v || arg->v != selmon->lt[selmon->sellt])
-		selmon->sellt ^= 1;
+		selmon->sellt = selmon->pertag->sellts[selmon->pertag->curtag] ^= 1;
 	if (arg && arg->v)
-		selmon->lt[selmon->sellt] = (Layout *)arg->v;
+		selmon->lt[selmon->sellt] = selmon->pertag->ltidxs[selmon->pertag->curtag][selmon->sellt] = (Layout *)arg->v;
 	strncpy(selmon->ltsymbol, selmon->lt[selmon->sellt]->symbol, sizeof selmon->ltsymbol);
 	if (selmon->sel)
 		arrange(selmon);
@@ -1531,7 +2065,7 @@ setmfact(const Arg *arg)
 	f = arg->f < 1.0 ? arg->f + selmon->mfact : arg->f - 1.0;
 	if (f < 0.05 || f > 0.95)
 		return;
-	selmon->mfact = f;
+	selmon->mfact = selmon->pertag->mfacts[selmon->pertag->curtag] = f;
 	arrange(selmon);
 }
 
@@ -1562,6 +2096,7 @@ setup(void)
 		die("no fonts could be loaded.");
 	lrpad = drw->fonts->h;
 	bh = drw->fonts->h + 2;
+	th = bh;
 	updategeom();
 	/* init atoms */
 	utf8string = XInternAtom(dpy, "UTF8_STRING", False);
@@ -1579,9 +2114,9 @@ setup(void)
 	netatom[NetWMWindowTypeDialog] = XInternAtom(dpy, "_NET_WM_WINDOW_TYPE_DIALOG", 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[CurMove] = drw_cur_create(drw, XC_fleur);
+	cursor[CurNormal] = drw_cur_create(drw, "left_ptr");
+	cursor[CurResize] = drw_cur_create(drw, "se-resize");
+	cursor[CurMove]   = drw_cur_create(drw, "fleur");
 	/* init appearance */
 	scheme = ecalloc(LENGTH(colors), sizeof(Clr *));
 	for (i = 0; i < LENGTH(colors); i++)
@@ -1610,6 +2145,9 @@ setup(void)
 	XSelectInput(dpy, root, wa.event_mask);
 	grabkeys();
 	focus(NULL);
+	fifofd = open(dwmfifo, O_RDWR | O_CLOEXEC | O_NONBLOCK);
+	if (fifofd < 0)
+		die("Failed to open() DWM fifo %s:", dwmfifo);
 }
 
 void
@@ -1634,7 +2172,7 @@ showhide(Client *c)
 		/* show clients top down */
 		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);
+			resize(c, c->x, c->y, c->w, c->h, c->bw, 0);
 		showhide(c->snext);
 	} else {
 		/* hide clients bottom up */
@@ -1683,43 +2221,96 @@ tagmon(const Arg *arg)
 	sendmon(selmon->sel, dirtomon(arg->i));
 }
 
+void
+tagtonext(const Arg *arg)
+{
+	unsigned int tmp;
+
+	if (selmon->sel == NULL)
+		return;
+
+	if ((tmp = nexttag()) == selmon->tagset[selmon->seltags])
+		return;
+
+	tag(&(const Arg){.ui = tmp });
+	view(&(const Arg){.ui = tmp });
+}
+
+void
+tagtoprev(const Arg *arg)
+{
+	unsigned int tmp;
+
+	if (selmon->sel == NULL)
+		return;
+
+	if ((tmp = prevtag()) == selmon->tagset[selmon->seltags])
+		return;
+
+	tag(&(const Arg){.ui = tmp });
+	view(&(const Arg){.ui = tmp });
+}
+
+void
+tagnthmon(const Arg *arg)
+{
+	if (!selmon->sel || !mons->next)
+		return;
+	sendmon(selmon->sel, numtomon(arg->i));
+}
+
 void
 tile(Monitor *m)
 {
-	unsigned int i, n, h, mw, my, ty;
+	unsigned int i, n, h, mw, my, ty, bw;
 	Client *c;
 
 	for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
 	if (n == 0)
 		return;
 
+	if (n == 1)
+		bw = 0;
+	else
+		bw = borderpx;
 	if (n > m->nmaster)
 		mw = m->nmaster ? m->ww * m->mfact : 0;
 	else
-		mw = m->ww;
-	for (i = my = ty = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
-		if (i < m->nmaster) {
-			h = (m->wh - my) / (MIN(n, m->nmaster) - i);
-			resize(c, m->wx, m->wy + my, mw - (2*c->bw), h - (2*c->bw), 0);
-			if (my + HEIGHT(c) < m->wh)
-				my += HEIGHT(c);
+		mw = m->ww - m->gappx;
+	for (i = 0, my = ty = m->gappx, c = nexttiled(m->clients); c; c = nexttiled(c->next), i++)
+			if (i < m->nmaster) {
+			h = (m->wh - my) / (MIN(n, m->nmaster) - i) - m->gappx;
+			resize(c, m->wx + m->gappx, m->wy + my, mw - 2*bw - m->gappx, h - 2*bw, bw, 0);
+			if (my + HEIGHT(c) + m->gappx < m->wh)
+				my += HEIGHT(c) + m->gappx;
 		} else {
-			h = (m->wh - ty) / (n - i);
-			resize(c, m->wx + mw, m->wy + ty, m->ww - mw - (2*c->bw), h - (2*c->bw), 0);
-			if (ty + HEIGHT(c) < m->wh)
-				ty += HEIGHT(c);
+			h = (m->wh - ty) / (n - i) - m->gappx;
+			resize(c, m->wx + mw + m->gappx, m->wy + ty, m->ww - mw - 2*bw - 2*m->gappx, h - 2*bw, bw, 0);
+			if (ty + HEIGHT(c) + m->gappx < m->wh)
+				ty += HEIGHT(c) + m->gappx;
 		}
 }
 
 void
 togglebar(const Arg *arg)
 {
-	selmon->showbar = !selmon->showbar;
+	selmon->showbar = /* selmon->pertag->showbars[selmon->pertag->curtag] = */ (selmon->showbar == 2 ? 1 : !selmon->showbar);
 	updatebarpos(selmon);
 	XMoveResizeWindow(dpy, selmon->barwin, selmon->wx, selmon->by, selmon->ww, bh);
 	arrange(selmon);
 }
 
+void
+tabmode(const Arg *arg)
+{
+	if(arg && arg->i >= 0)
+		selmon->showtab = arg->ui % showtab_nmodes;
+	else
+		selmon->showtab = (selmon->showtab + 1 ) % showtab_nmodes;
+	arrange(selmon);
+}
+
+
 void
 togglefloating(const Arg *arg)
 {
@@ -1730,10 +2321,19 @@ togglefloating(const Arg *arg)
 	selmon->sel->isfloating = !selmon->sel->isfloating || selmon->sel->isfixed;
 	if (selmon->sel->isfloating)
 		resize(selmon->sel, selmon->sel->x, selmon->sel->y,
-			selmon->sel->w, selmon->sel->h, 0);
+			selmon->sel->w - 2 * (borderpx - selmon->sel->bw),
+			selmon->sel->h - 2 * (borderpx - selmon->sel->bw),
+			borderpx, 0);
 	arrange(selmon);
 }
 
+void
+togglefullscr(const Arg *arg)
+{
+  if(selmon->sel)
+    setfullscreen(selmon->sel, !selmon->sel->isfullscreen);
+}
+
 void
 toggletag(const Arg *arg)
 {
@@ -1753,9 +2353,33 @@ 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 == ~0) {
+			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);
 	}
@@ -1798,6 +2422,9 @@ unmanage(Client *c, int destroyed)
 	focus(NULL);
 	updateclientlist();
 	arrange(m);
+	if (m == selmon && m->sel)
+		XWarpPointer(dpy, None, m->sel->win, 0, 0, 0, 0,
+		             m->sel->w/2, m->sel->h/2);
 }
 
 void
@@ -1832,6 +2459,11 @@ updatebars(void)
 				CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
 		XDefineCursor(dpy, m->barwin, cursor[CurNormal]->cursor);
 		XMapRaised(dpy, m->barwin);
+		m->tabwin = XCreateWindow(dpy, root, m->wx, m->ty, m->ww, th, 0, DefaultDepth(dpy, screen),
+						CopyFromParent, DefaultVisual(dpy, screen),
+						CWOverrideRedirect|CWBackPixmap|CWEventMask, &wa);
+		XDefineCursor(dpy, m->tabwin, cursor[CurNormal]->cursor);
+		XMapRaised(dpy, m->tabwin);
 		XSetClassHint(dpy, m->barwin, &ch);
 	}
 }
@@ -1839,14 +2471,33 @@ updatebars(void)
 void
 updatebarpos(Monitor *m)
 {
+	Client *c;
+	int nvis = 0;
+
 	m->wy = m->my;
 	m->wh = m->mh;
 	if (m->showbar) {
 		m->wh -= bh;
 		m->by = m->topbar ? m->wy : m->wy + m->wh;
-		m->wy = m->topbar ? m->wy + bh : m->wy;
-	} else
+		if ( m->topbar )
+			m->wy += bh;
+	} else {
 		m->by = -bh;
+	}
+
+	for(c = m->clients; c; c = c->next) {
+		if(ISVISIBLE(c)) ++nvis;
+	}
+
+	if(m->showtab == showtab_always
+	   || ((m->showtab == showtab_auto) && (nvis > 1) && (m->lt[m->sellt]->arrange == monocle))) {
+		m->wh -= th;
+		m->ty = m->toptab ? m->wy : m->wy + m->wh;
+		if ( m->toptab )
+			m->wy += th;
+	} else {
+		m->ty = -th;
+	}
 }
 
 void
@@ -2052,15 +2703,96 @@ updatewmhints(Client *c)
 void
 view(const Arg *arg)
 {
+	int i;
+	unsigned int tmptag;
+
 	if ((arg->ui & TAGMASK) == selmon->tagset[selmon->seltags])
 		return;
 	selmon->seltags ^= 1; /* toggle sel tagset */
-	if (arg->ui & TAGMASK)
+	if (arg->ui & TAGMASK) {
 		selmon->tagset[selmon->seltags] = arg->ui & TAGMASK;
+		selmon->pertag->prevtag = selmon->pertag->curtag;
+
+		if (arg->ui == ~0)
+			selmon->pertag->curtag = 0;
+		else {
+			for (i = 0; !(arg->ui & 1 << i); i++) ;
+			selmon->pertag->curtag = i + 1;
+		}
+	} else {
+		tmptag = selmon->pertag->prevtag;
+		selmon->pertag->prevtag = selmon->pertag->curtag;
+		selmon->pertag->curtag = tmptag;
+	}
+
+	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);
 }
 
+void
+viewclient(Client *c)
+{
+	if (!(c->tags & c->mon->tagset[c->mon->seltags]))
+		view(&(Arg){ .ui = c->tags });
+	focus(c);
+}
+
+void
+viewwin(const Arg *arg)
+{
+	Client *c = wintoclient((Window)(intptr_t)arg->v);
+
+	if (!c)
+		return;
+
+	viewclient(c);
+}
+
+Client *
+pattoclient(const char *pattern)
+{
+	Client *c;
+	Monitor *m;
+
+	for (m = mons; m; m = m->next)
+		for (c = m->clients; c; c = c->next)
+			if (!fnmatch(pattern, c->name, 0))
+				return c;
+	return NULL;
+}
+
+void
+viewname(const Arg *arg)
+{
+	Client *c = pattoclient(arg->v);
+
+	if (!c)
+		return;
+
+	viewclient(c);
+}
+
+void
+viewnext(const Arg *arg)
+{
+	view(&(const Arg){.ui = nexttag()});
+}
+
+void
+viewprev(const Arg *arg)
+{
+	view(&(const Arg){.ui = prevtag()});
+}
+
 Client *
 wintoclient(Window w)
 {
@@ -2084,7 +2816,7 @@ wintomon(Window w)
 	if (w == root && getrootptr(&x, &y))
 		return recttomon(x, y, 1, 1);
 	for (m = mons; m; m = m->next)
-		if (w == m->barwin)
+		if (w == m->barwin || w == m->tabwin)
 			return m;
 	if ((c = wintoclient(w)))
 		return c->mon;
@@ -2139,6 +2871,38 @@ zoom(const Arg *arg)
 	pop(c);
 }
 
+void
+swapmon(const Arg *arg)
+{
+    if (mons->next == NULL)
+        return;
+
+    Monitor *m1 = mons;
+    Monitor *m2 = mons->next;
+
+    unsigned int tmp = m1->tagset[m1->seltags];
+    m1->tagset[m1->seltags] = m2->tagset[m2->seltags];
+    m2->tagset[m2->seltags] = tmp;
+
+    Client *c;
+    for (c = m1->clients; c; c = c->next)
+        c->mon = m2;
+    for (c = m2->clients; c; c = c->next)
+        c->mon = m1;
+
+    Client *tmp_clients = m1->clients;
+    m1->clients = m2->clients;
+    m2->clients = tmp_clients;
+
+    Client *tmp_stack = m1->stack;
+    m1->stack = m2->stack;
+    m2->stack = tmp_stack;
+
+    focus(NULL);
+    arrange(m1);
+    arrange(m2);
+}
+
 int
 main(int argc, char *argv[])
 {