1 files changed, 64 insertions, 0 deletions
diff --git a/shiftview.c b/shiftview.c
new file mode 100644
index 0000000..3d2706b
--- /dev/null
+++ b/shiftview.c
@@ -0,0 +1,64 @@
+/** Function to shift the current view to the left/right
+ *
+ * @param: "arg->i" stores the number of tags to shift right (positive value)
+ *          or left (negative value)
+ */
+void
+shiftview(const Arg *arg)
+{
+	Arg shifted;
+	Client *c;
+	unsigned int tagmask = 0;
+
+	for (c = selmon->clients; c; c = c->next)
+		if (!(c->tags & SPTAGMASK))
+			tagmask = tagmask | c->tags;
+
+	shifted.ui = selmon->tagset[selmon->seltags] & ~SPTAGMASK;
+	if (arg->i > 0) /* left circular shift */
+		do {
+			shifted.ui = (shifted.ui << arg->i)
+			   | (shifted.ui >> (LENGTH(tags) - arg->i));
+			shifted.ui &= ~SPTAGMASK;
+		} while (tagmask && !(shifted.ui & tagmask));
+	else /* right circular shift */
+		do {
+			shifted.ui = (shifted.ui >> (- arg->i)
+			   | shifted.ui << (LENGTH(tags) + arg->i));
+			shifted.ui &= ~SPTAGMASK;
+		} while (tagmask && !(shifted.ui & tagmask));
+
+	view(&shifted);
+}
+
+void
+shifttag(const Arg *arg)
+{
+	Arg a;
+	Client *c;
+	unsigned visible = 0;
+	int i = arg->i;
+	int count = 0;
+	int nextseltags, curseltags = selmon->tagset[selmon->seltags];
+
+	do {
+		if(i > 0) // left circular shift
+			nextseltags = (curseltags << i) | (curseltags >> (LENGTH(tags) - i));
+
+		else // right circular shift
+			nextseltags = curseltags >> (- i) | (curseltags << (LENGTH(tags) + i));
+
+                // Check if tag is visible
+		for (c = selmon->clients; c && !visible; c = c->next)
+			if (nextseltags & c->tags) {
+				visible = 1;
+				break;
+			}
+		i += arg->i;
+	} while (!visible && ++count < 10);
+
+	if (count < 10) {
+		a.i = nextseltags;
+		tag(&a);
+	}
+}