apply patch dwm-winview-gaplessgrid-gridall-6.5.diff

config.def.h

@@ -1,4 +1,5 @@
 /* See LICENSE file for copyright and license details. */
+#include "gaplessgrid.c"
 
 /* appearance */
 static const unsigned int borderpx  = 1;        /* border pixel of windows */
@@ -51,6 +52,7 @@ static const Layout layouts[] = {
 	{ "[]=",      tile },    /* first entry is default */
 	{ "><>",      NULL },    /* no layout function means floating behavior */
 	{ "[M]",      monocle },
+	{ "HHH",      gaplessgrid },
 };
 
 /* key definitions */
@@ -131,6 +133,9 @@ static const Key keys[] = {
 	{ MODKEY|ShiftMask,             XK_q,      quit,           {0} },
 	{ MODKEY|ControlMask|ShiftMask, XK_q,      quit,           {1} }, 
 	{ MODKEY|ShiftMask,             XK_e,      exitdwm,        {0} },
+	{ MODKEY,                       XK_o,      winview,        {0} },
+	{ MODKEY,                       XK_g,      gridall,        {} },
+	{ MODKEY,                       XK_r,      winviewmono,    {} },
 };
 
 /* button definitions */

dwm.1

@@ -110,6 +110,9 @@ Increase master area size.
 .B Mod1\-h
 Decrease master area size.
 .TP
+.B Mod1\-o
+Select view of the window in focus. The list of tags to be displayed is matched to the window tag list.
+.TP
 .B Mod1\-Return
 Zooms/cycles focused window to/from master area (tiled layouts only).
 .TP

dwm.c

@@ -250,10 +250,13 @@ static void view(const Arg *arg);
 static void warp(const Client *c);
 static Client *wintoclient(Window w);
 static Monitor *wintomon(Window w);
+static void winview(const Arg* arg);
 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 gridall(const Arg *arg);
+static void winviewmono(const Arg *arg);
 
 /* variables */
 static const char broken[] = "broken";
@@ -2496,6 +2499,41 @@ wintomon(Window w)
 	return selmon;
 }
 
+/* Selects for the view of the focused window. The list of tags */
+/* to be displayed is matched to the focused window tag list. */
+void
+winview(const Arg* arg){
+	Window win, win_r, win_p, *win_c;
+	unsigned nc;
+	int unused;
+	Client* c;
+	Arg a;
+
+	if (!XGetInputFocus(dpy, &win, &unused)) return;
+	while(XQueryTree(dpy, win, &win_r, &win_p, &win_c, &nc)
+	      && win_p != win_r) win = win_p;
+
+	if (!(c = wintoclient(win))) return;
+
+	a.ui = c->tags;
+	view(&a);
+}
+
+/* by desgua */
+void
+gridall(const Arg *arg)
+{
+	setlayout(&(Arg){.v = &layouts[3]});
+	view(&(Arg){.ui = ~0});
+}
+
+void
+winviewmono(const Arg *arg)
+{
+	winview(&(Arg){0});
+	setlayout(&(Arg){.v = &layouts[2]});
+}
+
 /* 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. */

gaplessgrid.c

@@ -0,0 +1,35 @@
+void
+gaplessgrid(Monitor *m) {
+	unsigned int n, cols, rows, cn, rn, i, cx, cy, cw, ch;
+	Client *c;
+
+	for(n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++) ;
+	if(n == 0)
+		return;
+
+	/* grid dimensions */
+	for(cols = 0; cols <= n/2; cols++)
+		if(cols*cols >= n)
+			break;
+	if(n == 5) /* set layout against the general calculation: not 1:2:2, but 2:3 */
+		cols = 2;
+	rows = n/cols;
+
+	/* window geometries */
+	cw = cols ? m->ww / cols : m->ww;
+	cn = 0; /* current column number */
+	rn = 0; /* current row number */
+	for(i = 0, c = nexttiled(m->clients); c; i++, c = nexttiled(c->next)) {
+		if(i/rows + 1 > cols - n%cols)
+			rows = n/cols + 1;
+		ch = rows ? m->wh / rows : m->wh;
+		cx = m->wx + cn*cw;
+		cy = m->wy + rn*ch;
+		resize(c, cx, cy, cw - 2 * c->bw, ch - 2 * c->bw, False);
+		rn++;
+		if(rn >= rows) {
+			rn = 0;
+			cn++;
+		}
+	}
+}