Adding nrowgrid layout

README.md

@@ -11,7 +11,7 @@ Refer to [https://dwm.suckless.org/](https://dwm.suckless.org/) for details on t
 
 ### Changelog:
 
-2019-09-09 - Added deck, fibonacci (dwindle and spiral), gridmode, gapplessgrid and horizgrid layouts
+2019-09-09 - Added deck, fibonacci (dwindle and spiral), gridmode, gapplessgrid, horizgrid and nrowgrid layouts
 
 2019-09-08 - Added cfacts and vanitygaps patches, added bstack and bstackhoriz layouts
 
@@ -129,3 +129,6 @@ Refer to [https://dwm.suckless.org/](https://dwm.suckless.org/) for details on t
 
    - [horizgrid](https://dwm.suckless.org/patches/horizgrid/)
       - horizontal grid layout
+
+   - [nrowgrid](https://dwm.suckless.org/patches/nrowgrid/)
+      - nrowgrid layout, number of rows in grid controlled by nmaster

config.def.h

@@ -93,39 +93,49 @@ static const float mfact     = 0.55; /* factor of master area size [0.05..0.95]
 static const int nmaster     = 1;    /* number of clients in master area */
 static const int resizehints = 1;    /* 1 means respect size hints in tiled resizals */
 
+#if NROWGRID_LAYOUT
+#define FORCE_VSPLIT 1
+#endif
+
 static const Layout layouts[] = {
 	/* symbol     arrange function */
 	#if TILE_LAYOUT
 	{ "[]=",      tile },    /* first entry is default */
-	#endif // TILE_LAYOUT
+	#endif
 	{ "><>",      NULL },    /* no layout function means floating behavior */
 	#if MONOCLE_LAYOUT
 	{ "[M]",      monocle },
-	#endif // MONOCLE_LAYOUT
+	#endif
 	#if BSTACK_LAYOUT
 	{ "TTT",      bstack },
-	#endif // BSTACK_LAYOUT
+	#endif
 	#if BSTACKHORIZ_LAYOUT
 	{ "===",      bstackhoriz },
-	#endif // BSTACKHORIZ_LAYOUT
+	#endif
 	#if DECK_LAYOUT
 	{ "[D]",      deck },
-	#endif // DECK_LAYOUT
+	#endif
 	#if FIBONACCI_SPIRAL_LAYOUT
 	{ "(@)",      spiral },
-	#endif // FIBONACCI_SPIRAL_LAYOUT
+	#endif
 	#if FIBONACCI_DWINDLE_LAYOUT
 	{ "[\\]",     dwindle },
-	#endif // FIBONACCI_DWINDLE_LAYOUT
+	#endif
 	#if GRIDMODE_LAYOUT
 	{ "HHH",      grid },
-	#endif // GRIDMODE_LAYOUT
+	#endif
 	#if HORIZGRID_LAYOUT
-	{ "###",      horizgrid },
+	{ "---",      horizgrid },
+	#endif
+	#if GAPPLESSGRID_LAYOUT
+	{ ":::",      gaplessgrid },
+	#endif
+	#if NROWGRID_LAYOUT
+	{ "###",      nrowgrid },
 	#endif
 	#if CYCLELAYOUTS_PATCH
 	{ NULL,       NULL },
-	#endif // CYCLELAYOUTS_PATCH
+	#endif
 };
 
 /* key definitions */

patch/include.c

@@ -86,6 +86,10 @@
 #include "monocle.c"
 #endif
 
+#if NROWGRID_LAYOUT
+#include "nrowgrid.c"
+#endif
+
 #if TILE_LAYOUT
 #include "tile.c"
 #endif

patch/include.h

@@ -82,6 +82,10 @@
 #include "monocle.h"
 #endif
 
+#if NROWGRID_LAYOUT
+#include "nrowgrid.h"
+#endif
+
 #if TILE_LAYOUT
 #include "tile.h"
 #endif

patch/nrowgrid.c

@@ -0,0 +1,103 @@
+#if VANITYGAPS_PATCH
+void
+nrowgrid(Monitor *m)
+{
+	unsigned int n = 0, i = 0, ri = 0, ci = 0;  /* counters */
+	int oh, ov, ih, iv;                         /* vanitygap settings */
+	unsigned int cx, cy, cw, ch;                /* client geometry */
+	unsigned int uw = 0, uh = 0, uc = 0;        /* utilization trackers */
+	unsigned int cols, rows = m->nmaster + 1;
+	Client *c;
+
+	/* count clients */
+	getgaps(m, &oh, &ov, &ih, &iv, &n);
+
+	/* nothing to do here */
+	if (n == 0)
+		return;
+
+	/* force 2 clients to always split vertically */
+	if (FORCE_VSPLIT && n == 2)
+		rows = 1;
+
+	/* never allow empty rows */
+	if (n < rows)
+		rows = n;
+
+	/* define first row */
+	cols = n / rows;
+	uc = cols;
+	cy = m->wy + oh;
+	ch = (m->wh - 2*oh - ih*(rows - 1)) / rows;
+	uh = ch;
+
+	for (c = nexttiled(m->clients); c; c = nexttiled(c->next), i++, ci++) {
+		if (ci == cols) {
+			uw = 0;
+			ci = 0;
+			ri++;
+
+			/* next row */
+			cols = (n - uc) / (rows - ri);
+			uc += cols;
+			cy = m->wy + oh + uh + ih;
+			uh += ch + ih;
+		}
+
+		cx = m->wx + ov + uw;
+		cw = (m->ww - 2*ov - uw) / (cols - ci);
+		uw += cw + iv;
+
+		resize(c, cx, cy, cw - (2*c->bw), ch - (2*c->bw), 0);
+	}
+}
+#else
+void
+nrowgrid(Monitor *m)
+{
+	unsigned int n = 0, i = 0, ri = 0, ci = 0;  /* counters */
+	unsigned int cx, cy, cw, ch;                /* client geometry */
+	unsigned int uw = 0, uh = 0, uc = 0;        /* utilization trackers */
+	unsigned int cols, rows = m->nmaster + 1;
+	Client *c;
+
+	for (n = 0, c = nexttiled(m->clients); c; c = nexttiled(c->next), n++);
+	if (n == 0)
+		return;
+
+	/* force 2 clients to always split vertically */
+	if (FORCE_VSPLIT && n == 2)
+		rows = 1;
+
+	/* never allow empty rows */
+	if (n < rows)
+		rows = n;
+
+	/* define first row */
+	cols = n / rows;
+	uc = cols;
+	cy = m->wy;
+	ch = m->wh / rows;
+	uh = ch;
+
+	for (c = nexttiled(m->clients); c; c = nexttiled(c->next), i++, ci++) {
+		if (ci == cols) {
+			uw = 0;
+			ci = 0;
+			ri++;
+
+			/* next row */
+			cols = (n - uc) / (rows - ri);
+			uc += cols;
+			cy = m->wy + uh;
+			uh += ch;
+		}
+
+		cx = m->wx + uw;
+		cw = (m->ww - uw) / (cols - ci);
+		uw += cw;
+
+		resize(c, cx, cy, cw - (2*c->bw), ch - (2*c->bw), 0);
+	}
+}
+#endif

patch/nrowgrid.h

@@ -0,0 +1 @@
+static void nrowgrid(Monitor *m);

patches.h

@@ -227,6 +227,11 @@
  */
 #define HORIZGRID_LAYOUT 0
 
+/* Grid layout where nmaster controls the number of rows.
+ * https://dwm.suckless.org/patches/nrowgrid/
+ */
+#define NROWGRID_LAYOUT 0
+
 /* The default tile layout.
  * This can be optionally disabled in favour of other layouts.
  */