From 4eabe48fed38b94e810768dd8523cba3cbd5bae2 Mon Sep 17 00:00:00 2001
From: "Devin J. Pohly" <djpohly@gmail.com>
Date: Thu, 23 Apr 2020 20:14:11 -0500
Subject: [PATCH] add incnmaster and setmfact commands

---
 config.def.h |  6 +++++-
 dwl.c        | 23 +++++++++++++++++++++++
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/config.def.h b/config.def.h
index 71d67e9..9d3dc35 100644
--- a/config.def.h
+++ b/config.def.h
@@ -41,9 +41,13 @@ static const char *termcmd[]  = { "kitty", "-o", "linux_display_server=wayland",
 
 static const Key keys[] = {
 	/* modifier                  key                 function        argument */
-	{ MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_Return,     spawn,          {.v = termcmd } },
+	{ MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_Return,     spawn,          {.v = termcmd} },
 	{ MODKEY,                    XKB_KEY_j,          focusstack,     {.i = +1} },
 	{ MODKEY,                    XKB_KEY_k,          focusstack,     {.i = -1} },
+	{ MODKEY,                    XKB_KEY_i,          incnmaster,     {.i = +1} },
+	{ MODKEY,                    XKB_KEY_d,          incnmaster,     {.i = -1} },
+	{ MODKEY,                    XKB_KEY_h,          setmfact,       {.f = -0.05} },
+	{ MODKEY,                    XKB_KEY_l,          setmfact,       {.f = +0.05} },
 	{ MODKEY,                    XKB_KEY_Tab,        view,           {0} },
 	{ MODKEY,                    XKB_KEY_t,          setlayout,      {.v = &layouts[0]} },
 	{ MODKEY,                    XKB_KEY_f,          setlayout,      {.v = &layouts[1]} },
diff --git a/dwl.c b/dwl.c
index c58a7e0..c813268 100644
--- a/dwl.c
+++ b/dwl.c
@@ -30,6 +30,7 @@
 #include <xkbcommon/xkbcommon.h>
 
 /* macros */
+#define MAX(A, B)               ((A) > (B) ? (A) : (B))
 #define MIN(A, B)               ((A) < (B) ? (A) : (B))
 #define CLEANMASK(mask)         (mask & ~WLR_MODIFIER_CAPS)
 #define VISIBLEON(C, M)         ((C)->mon == (M) && ((C)->tags & (M)->tagset[(M)->seltags]))
@@ -131,6 +132,7 @@ static void cursorframe(struct wl_listener *listener, void *data);
 static void destroynotify(struct wl_listener *listener, void *data);
 static void focus(Client *c, struct wlr_surface *surface);
 static void focusstack(const Arg *arg);
+static void incnmaster(const Arg *arg);
 static void inputdevice(struct wl_listener *listener, void *data);
 static bool keybinding(uint32_t mods, xkb_keysym_t sym);
 static void keypress(struct wl_listener *listener, void *data);
@@ -149,6 +151,7 @@ static void run(char *startup_cmd);
 static Client *selclient(void);
 static void setcursor(struct wl_listener *listener, void *data);
 static void setlayout(const Arg *arg);
+static void setmfact(const Arg *arg);
 static void setup(void);
 static void spawn(const Arg *arg);
 static void tag(const Arg *arg);
@@ -469,6 +472,12 @@ focusstack(const Arg *arg)
 	focus(c, NULL);
 }
 
+void
+incnmaster(const Arg *arg)
+{
+	selmon->nmaster = MAX(selmon->nmaster + arg->i, 0);
+}
+
 void
 inputdevice(struct wl_listener *listener, void *data)
 {
@@ -949,6 +958,20 @@ setlayout(const Arg *arg)
 	/* XXX change layout symbol? */
 }
 
+/* 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 < 0.1 || f > 0.9)
+		return;
+	selmon->mfact = f;
+}
+
 void
 setup(void)
 {