From a5f4a24c2bc1a7097d0871e4e14e63f24ca0912d Mon Sep 17 00:00:00 2001
From: Saumit Dinesan <justsaumit@protonmail.com>
Date: Wed, 9 Mar 2022 15:16:07 +0530
Subject: Applied adjacenttag-skipvacant patch

---
 config.h |   4 +++
 dwm      | Bin 80312 -> 80640 bytes
 dwm.c    |  93 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 dwm.o    | Bin 75832 -> 77256 bytes
 4 files changed, 97 insertions(+)

diff --git a/config.h b/config.h
index d980c89..19971e6 100644
--- a/config.h
+++ b/config.h
@@ -100,6 +100,10 @@ static Key keys[] = {
 	{ MODKEY,                       XK_period, focusmon,       {.i = +1 } },
 	{ MODKEY|ShiftMask,             XK_comma,  tagmon,         {.i = -1 } },
 	{ MODKEY|ShiftMask,             XK_period, tagmon,         {.i = +1 } },
+    { MODKEY,                       XK_Right,  viewnext,       {0} },
+    { MODKEY,                       XK_Left,   viewprev,       {0} },
+    { MODKEY|ShiftMask,             XK_Right,  tagtonext,      {0} },
+    { MODKEY|ShiftMask,             XK_Left,   tagtoprev,      {0} },
     { MODKEY,                       XK_minus,  setgaps,        {.i = -1 } },
     { MODKEY,                       XK_equal,  setgaps,        {.i = +1 } },
     { MODKEY|ShiftMask,             XK_equal,  setgaps,        {.i = 0  } },
diff --git a/dwm b/dwm
index af57c08..075a8d3 100755
Binary files a/dwm and b/dwm differ
diff --git a/dwm.c b/dwm.c
index 80639aa..20c2696 100644
--- a/dwm.c
+++ b/dwm.c
@@ -238,8 +238,10 @@ static void maprequest(XEvent *e);
 static void monocle(Monitor *m);
 static void motionnotify(XEvent *e);
 static void movemouse(const Arg *arg);
+static unsigned int nexttag(void);
 static Client *nexttiled(Client *c);
 static void pop(Client *);
+static unsigned int prevtag(void);
 static void propertynotify(XEvent *e);
 static void quit(const Arg *arg);
 static Monitor *recttomon(int x, int y, int w, int h);
@@ -270,6 +272,8 @@ static void spawn(const Arg *arg);
 static Monitor *systraytomon(Monitor *m);
 static void tag(const Arg *arg);
 static void tagmon(const Arg *arg);
+static void tagtonext(const Arg *arg);
+static void tagtoprev(const Arg *arg);
 static void tile(Monitor *);
 static void togglebar(const Arg *arg);
 static void togglefloating(const Arg *arg);
@@ -293,6 +297,8 @@ static void updatetitle(Client *c);
 static void updatewindowtype(Client *c);
 static void updatewmhints(Client *c);
 static void view(const Arg *arg);
+static void viewnext(const Arg *arg);
+static void viewprev(const Arg *arg);
 static Client *wintoclient(Window w);
 static Monitor *wintomon(Window w);
 static Client *wintosystrayicon(Window w);
@@ -1480,6 +1486,29 @@ movemouse(const Arg *arg)
 	}
 }
 
+unsigned int
+nexttag(void)
+{
+	unsigned int seltag = selmon->tagset[selmon->seltags];
+	unsigned int usedtags = 0;
+	Client *c = selmon->clients;
+
+	if (!c)
+		return seltag;
+
+	/* skip vacant tags */
+	do {
+		usedtags |= c->tags;
+		c = c->next;
+	} while (c);
+
+	do {
+		seltag = seltag == (1 << (LENGTH(tags) - 1)) ? 1 : seltag << 1;
+	} while (!(seltag & usedtags));
+
+	return seltag;
+}
+
 Client *
 nexttiled(Client *c)
 {
@@ -1496,6 +1525,28 @@ pop(Client *c)
 	arrange(c->mon);
 }
 
+unsigned int
+prevtag(void)
+{
+	unsigned int seltag = selmon->tagset[selmon->seltags];
+	unsigned int usedtags = 0;
+	Client *c = selmon->clients;
+	if (!c)
+		return seltag;
+
+	/* skip vacant tags */
+	do {
+		usedtags |= c->tags;
+		c = c->next;
+	} while (c);
+
+	do {
+		seltag = seltag == 1 ? (1 << (LENGTH(tags) - 1)) : seltag >> 1;
+	} while (!(seltag & usedtags));
+
+	return seltag;
+}
+
 void
 propertynotify(XEvent *e)
 {
@@ -2052,6 +2103,36 @@ tagmon(const Arg *arg)
 	sendmon(selmon->sel, dirtomon(arg->i));
 }
 
+void
+tagtonext(const Arg *arg)
+{
+	unsigned int tmp;
+
+	if (selmon->sel == NULL)
+		return;
+
+	if ((tmp = nexttag()) == selmon->tagset[selmon->seltags])
+		return;
+
+	tag(&(const Arg){.ui = tmp });
+	view(&(const Arg){.ui = tmp });
+}
+
+void
+tagtoprev(const Arg *arg)
+{
+	unsigned int tmp;
+
+	if (selmon->sel == NULL)
+		return;
+
+	if ((tmp = prevtag()) == selmon->tagset[selmon->seltags])
+		return;
+
+	tag(&(const Arg){.ui = tmp });
+	view(&(const Arg){.ui = tmp });
+}
+
 void
 tile(Monitor *m)
 {
@@ -2733,6 +2814,18 @@ swallowingclient(Window w)
 	return NULL;
 }
 
+void
+viewnext(const Arg *arg)
+{
+	view(&(const Arg){.ui = nexttag()});
+}
+
+void
+viewprev(const Arg *arg)
+{
+	view(&(const Arg){.ui = prevtag()});
+}
+ 
 Client *
 wintoclient(Window w)
 {
diff --git a/dwm.o b/dwm.o
index 56cb640..353bec8 100644
Binary files a/dwm.o and b/dwm.o differ
-- 
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