1 files changed, 133 insertions, 0 deletions
diff --git a/patch/tab.c b/patch/tab.c
new file mode 100644
index 0000000..30a14d1
--- /dev/null
+++ b/patch/tab.c
@@ -0,0 +1,133 @@
+static int th = 0; /* tab bar geometry */
+
+void
+drawtabs(void)
+{
+	Monitor *m;
+
+	for (m = mons; m; m = m->next)
+		drawtab(m);
+}
+
+static int
+cmpint(const void *p1, const void *p2)
+{
+  /* The actual arguments to this function are "pointers to
+     pointers to char", but strcmp(3) arguments are "pointers
+     to char", hence the following cast plus dereference */
+  return *((int*) p1) > * (int*) p2;
+}
+
+void
+drawtab(Monitor *m)
+{
+	Client *c;
+	int i;
+	int itag = -1;
+	char view_info[50];
+	int view_info_w = 0;
+	int sorted_label_widths[MAXTABS];
+	int tot_width;
+	int maxsize = bh;
+	int x = 0;
+	int w = 0;
+
+	// view_info: indicate the tag which is displayed in the view
+	for (i = 0; i < NUMTAGS; ++i) {
+		if ((selmon->tagset[selmon->seltags] >> i) & 1) {
+			if (itag >=0) { // more than one tag selected
+				itag = -1;
+				break;
+			}
+			itag = i;
+		}
+	}
+
+	if (0 <= itag  && itag < NUMTAGS) {
+		snprintf(view_info, sizeof view_info, "[%s]", tagicon(m, itag));
+	} else {
+		strncpy(view_info, "[...]", sizeof view_info);
+	}
+	view_info[sizeof(view_info) - 1 ] = 0;
+	view_info_w = TEXTW(view_info);
+	tot_width = view_info_w;
+
+	/* Calculates number of labels and their width */
+	m->ntabs = 0;
+	for (c = m->clients; c; c = c->next) {
+		if (!ISVISIBLE(c) || HIDDEN(c))
+			continue;
+		m->tab_widths[m->ntabs] = TEXTW(c->name);
+		tot_width += m->tab_widths[m->ntabs];
+		++m->ntabs;
+		if (m->ntabs >= MAXTABS)
+			break;
+	}
+
+	if (tot_width > m->ww) { // not enough space to display the labels, they need to be truncated
+		memcpy(sorted_label_widths, m->tab_widths, sizeof(int) * m->ntabs);
+		qsort(sorted_label_widths, m->ntabs, sizeof(int), cmpint);
+		tot_width = view_info_w;
+		for (i = 0; i < m->ntabs; ++i) {
+			if (tot_width + (m->ntabs - i) * sorted_label_widths[i] > m->ww)
+				break;
+			tot_width += sorted_label_widths[i];
+		}
+		maxsize = (m->ww - tot_width) / (m->ntabs - i);
+	} else {
+		maxsize = m->ww;
+	}
+	i = 0;
+	for (c = m->clients; c; c = c->next) {
+		if (!ISVISIBLE(c) || HIDDEN(c))
+			continue;
+		if (i >= m->ntabs)
+			break;
+		if (m->tab_widths[i] > maxsize)
+			m->tab_widths[i] = maxsize;
+		w = m->tab_widths[i];
+		drw_setscheme(drw, scheme[(c == m->sel) ? SchemeSel : SchemeNorm]);
+		drw_text(drw, x, 0, w, th, 0, c->name, 0, False);
+		x += w;
+		++i;
+	}
+
+	drw_setscheme(drw, scheme[SchemeNorm]);
+
+	/* cleans interspace between window names and current viewed tag label */
+	w = m->ww - view_info_w - x;
+	drw_text(drw, x, 0, w, th, 0, "", 0, False);
+
+	/* view info */
+	x += w;
+	w = view_info_w;
+	drw_text(drw, x, 0, w, th, 0, view_info, 0, False);
+
+	drw_map(drw, m->tabwin, 0, 0, m->ww, th);
+}
+
+void
+focuswin(const Arg* arg)
+{
+	int iwin = arg->i;
+	Client* c = NULL;
+	for (c = selmon->clients; c && (iwin || !ISVISIBLE(c)) ; c = c->next) {
+		if (ISVISIBLE(c) && !HIDDEN(c))
+			--iwin;
+	};
+	if (c) {
+		focus(c);
+		restack(selmon);
+	}
+}
+
+void
+tabmode(const Arg *arg)
+{
+	if (arg && arg->i >= 0)
+		selmon->showtab = arg->ui % showtab_nmodes;
+	else
+		selmon->showtab = (selmon->showtab + 1 ) % showtab_nmodes;
+	arrange(selmon);
+}
+