From 938c63ad0a8a706fba0b4db1c66397e9defdcb92 Mon Sep 17 00:00:00 2001
From: h3nc4 <me@h3nc4.com>
Date: Mon, 17 Mar 2025 17:38:22 -0300
Subject: [PATCH] port the tagshift patch from dwm

---
 config.def.h |  4 ++++
 dwl.c        | 37 +++++++++++++++++++++++++++++++++++++
 2 files changed, 41 insertions(+)

diff --git a/config.def.h b/config.def.h
index 22d2171..72dbaa1 100644
--- a/config.def.h
+++ b/config.def.h
@@ -131,6 +131,10 @@ static const Key keys[] = {
 	{ MODKEY,                    XKB_KEY_k,          focusstack,     {.i = -1} },
 	{ MODKEY,                    XKB_KEY_i,          incnmaster,     {.i = +1} },
 	{ MODKEY,                    XKB_KEY_d,          incnmaster,     {.i = -1} },
+	{ MODKEY,                    XKB_KEY_Left,       shiftview,      {.i = -1 } },
+	{ MODKEY,                    XKB_KEY_Right,      shiftview,      {.i = +1 } },
+	{ MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_Left,       shifttag,       {.i = -1 } },
+	{ MODKEY|WLR_MODIFIER_SHIFT, XKB_KEY_Right,      shifttag,       {.i = +1 } },
 	{ MODKEY,                    XKB_KEY_h,          setmfact,       {.f = -0.05f} },
 	{ MODKEY,                    XKB_KEY_l,          setmfact,       {.f = +0.05f} },
 	{ MODKEY,                    XKB_KEY_Return,     zoom,           {0} },
diff --git a/dwl.c b/dwl.c
index cf3ef70..be1e89e 100644
--- a/dwl.c
+++ b/dwl.c
@@ -333,6 +333,8 @@ static void setmon(Client *c, Monitor *m, uint32_t newtags);
 static void setpsel(struct wl_listener *listener, void *data);
 static void setsel(struct wl_listener *listener, void *data);
 static void setup(void);
+static void shiftview(const Arg *arg);
+static void shifttag(const Arg *arg);
 static void spawn(const Arg *arg);
 static void startdrag(struct wl_listener *listener, void *data);
 static void tag(const Arg *arg);
@@ -2646,6 +2648,41 @@ setup(void)
 #endif
 }
 
+void
+shiftview(const Arg *arg)
+{
+	Arg a;
+	int nextseltags, curseltags = selmon->tagset[selmon->seltags];
+	if (arg->i > 0) // left circular shift
+		nextseltags = (curseltags << arg->i) | (curseltags >> (TAGCOUNT - arg->i));
+	else // right circular shift 
+		nextseltags = curseltags >> (-arg->i) | (curseltags << (TAGCOUNT + arg->i));
+
+	a.i = nextseltags; // Change view to the new tag
+	view(&a);
+}
+
+void
+shifttag(const Arg *arg)
+{
+	Arg a;
+	int nextseltags, curseltags = selmon->tagset[selmon->seltags];
+	Client *sel = focustop(selmon);
+	if (!sel)
+		return;
+	if (arg->i > 0) // left circular shift 
+		nextseltags = (curseltags << arg->i) | (curseltags >> (TAGCOUNT - arg->i));
+	else // right circular shift 
+		nextseltags = curseltags >> (-arg->i) | (curseltags << (TAGCOUNT + arg->i));
+
+	sel->tags = nextseltags & TAGMASK;// Apply new tag to the client
+	a.i = nextseltags; // Change view to the new tag
+	view(&a);
+
+	arrange(selmon);
+	printstatus(); // change to 'drawbars();' if using "bars" patch
+}
+
 void
 spawn(const Arg *arg)
 {
-- 
2.47.2