layoutscroll patch

README.md

@@ -6,6 +6,7 @@
 3. [scratchpad](https://dwm.suckless.org/patches/scratchpad/) patch for scratchpad
 4. [bar height](https://dwm.suckless.org/patches/bar_height/) for changing bar's height
 5. [pertag](https://dwm.suckless.org/patches/pertag/) for layout for each tag.
-6. [swallow](https://dwm.suckless.org/patches/swallow/) patch for swallowing windows (have reversed the patch right now.)
+6. [layoutscroll](https://dwm.suckless.org/patches/layoutscroll/) for scrolling through layouts with ``mod+shift+tab``
+7. [swallow](https://dwm.suckless.org/patches/swallow/) patch for swallowing windows (have reversed the patch right now.)
 
 ### MAKE SURE TO INSTALL ``libxft-bgra`` OR DWM WILL CRASH

config.def.h

@@ -93,6 +93,8 @@ static Key keys[] = {
 	{ MODKEY,                       XK_period, focusmon,       {.i = +1 } },
 	{ MODKEY|ShiftMask,             XK_comma,  tagmon,         {.i = -1 } },
 	{ MODKEY|ShiftMask,             XK_period, tagmon,         {.i = +1 } },
+	// { MODKEY|ShiftMask,             XK_h,      layoutscroll,   {.i = -1 } },
+	{ MODKEY|ShiftMask,             XK_Tab,      layoutscroll,   {.i = +1 } },
 	{ MODKEY,                       XK_minus,  setgaps,        {.i = -1 } },
 	{ MODKEY,                       XK_equal,  setgaps,        {.i = +1 } },
 	{ MODKEY|ShiftMask,             XK_equal,  setgaps,        {.i = 0  } },

config.h

@@ -93,6 +93,8 @@ static Key keys[] = {
 	{ MODKEY,                       XK_period, focusmon,       {.i = +1 } },
 	{ MODKEY|ShiftMask,             XK_comma,  tagmon,         {.i = -1 } },
 	{ MODKEY|ShiftMask,             XK_period, tagmon,         {.i = +1 } },
+	// { MODKEY|ShiftMask,             XK_h,      layoutscroll,   {.i = -1 } },
+	{ MODKEY|ShiftMask,             XK_Tab,      layoutscroll,   {.i = +1 } },
 	{ MODKEY,                       XK_minus,  setgaps,        {.i = -1 } },
 	{ MODKEY,                       XK_equal,  setgaps,        {.i = +1 } },
 	{ MODKEY|ShiftMask,             XK_equal,  setgaps,        {.i = 0  } },

dwm.c

@@ -148,6 +148,7 @@ struct Monitor {
 	Monitor *next;
 	Window barwin;
 	const Layout *lt[2];
+	int ltcur; /* current layout */
 	Pertag *pertag;
 };
 
@@ -220,6 +221,7 @@ 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 layoutscroll(const Arg *arg);
 static void setgaps(const Arg *arg);
 static void setlayout(const Arg *arg);
 static void setmfact(const Arg *arg);
@@ -675,6 +677,7 @@ createmon(void)
 	m->nmaster = nmaster;
 	m->showbar = showbar;
 	m->topbar = topbar;
+	m->ltcur = 0;
 	m->gappx = gappx;
 	m->lt[0] = &layouts[0];
 	m->lt[1] = &layouts[1 % LENGTH(layouts)];
@@ -1600,6 +1603,25 @@ setgaps(const Arg *arg)
 	arrange(selmon);
 }
 
+void
+layoutscroll(const Arg *arg)
+{
+	if (!arg || !arg->i)
+		return;
+	int switchto = selmon->ltcur + arg->i;
+	int l = LENGTH(layouts);
+
+	if (switchto == l)
+		switchto = 0;
+	else if(switchto < 0)
+		switchto = l - 1;
+
+	selmon->ltcur = switchto;
+	Arg arg2 = {.v= &layouts[switchto] };
+	setlayout(&arg2);
+
+}
+
 void
 setlayout(const Arg *arg)
 {

patch/dwm-layoutscroll-6.2.diff

@@ -0,0 +1,67 @@
+diff --git a/config.def.h b/config.def.h
+index 4c56466..11ee7b5 100644
+--- a/config.def.h
++++ b/config.def.h
+@@ -90,6 +90,8 @@ static Key keys[] = {
+ 	{ MODKEY,                       XK_period, focusmon,       {.i = +1 } },
+ 	{ MODKEY|ShiftMask,             XK_comma,  tagmon,         {.i = -1 } },
+ 	{ MODKEY|ShiftMask,             XK_period, tagmon,         {.i = +1 } },
++	{ MODKEY|ShiftMask,             XK_h,      layoutscroll,   {.i = -1 } },
++	{ MODKEY|ShiftMask,             XK_l,      layoutscroll,   {.i = +1 } },
+ 	TAGKEYS(                        XK_1,                      0)
+ 	TAGKEYS(                        XK_2,                      1)
+ 	TAGKEYS(                        XK_3,                      2)
+diff --git a/dwm.c b/dwm.c
+index 1e37fcf..24effbc 100644
+--- a/dwm.c
++++ b/dwm.c
+@@ -148,6 +148,7 @@ struct Monitor {
+ 	Monitor *next;
+ 	Window barwin;
+ 	const Layout *lt[2];
++	int ltcur; /* current layout */
+ };
+ 
+ typedef struct {
+@@ -227,6 +228,7 @@ 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 layoutscroll(const Arg *arg);
+ static void setlayout(const Arg *arg);
+ static void setmfact(const Arg *arg);
+ static void setup(void);
+@@ -725,6 +727,7 @@ createmon(void)
+ 	m->nmaster = nmaster;
+ 	m->showbar = showbar;
+ 	m->topbar = topbar;
++	m->ltcur = 0;
+ 	m->lt[0] = &layouts[0];
+ 	m->lt[1] = &layouts[1 % LENGTH(layouts)];
+ 	strncpy(m->ltsymbol, layouts[0].symbol, sizeof m->ltsymbol);
+@@ -1667,6 +1670,25 @@ setfullscreen(Client *c, int fullscreen)
+ 	}
+ }
+ 
++void
++layoutscroll(const Arg *arg)
++{
++	if (!arg || !arg->i)
++		return;
++	int switchto = selmon->ltcur + arg->i;
++	int l = LENGTH(layouts);
++
++	if (switchto == l)
++		switchto = 0;
++	else if(switchto < 0)
++		switchto = l - 1;
++
++	selmon->ltcur = switchto;
++	Arg arg2 = {.v= &layouts[switchto] };
++	setlayout(&arg2);
++
++}
++
+ void
+ setlayout(const Arg *arg)
+ {