From 4d55a4250e3cf5dafe79e859b63645be9668adbb Mon Sep 17 00:00:00 2001
From: Aleksandr Rybalko <ray@FreeBSD.org>
Date: Thu, 6 Feb 2014 15:16:38 +0000
Subject: [PATCH] Add vt_set_border function to help to change border color.
 Use vt_set_border to reset color after font changed (different font size may
 change border sizes)

Sponsored by:	The FreeBSD Foundation
---
 sys/dev/vt/vt_core.c | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/sys/dev/vt/vt_core.c b/sys/dev/vt/vt_core.c
index d65c442bc8b..368c971199e 100644
--- a/sys/dev/vt/vt_core.c
+++ b/sys/dev/vt/vt_core.c
@@ -1044,6 +1044,30 @@ vt_change_font(struct vt_window *vw, struct vt_font *vf)
 	return (0);
 }
 
+static int
+vt_set_border(struct vt_window *vw, struct vt_font *vf, term_color_t c)
+{
+	struct vt_device *vd = vw->vw_device;
+	int l, r, t, b, w, h;
+
+	if (vd->vd_driver->vd_drawrect == NULL)
+		return (ENOTSUP);
+
+	w = vd->vd_width - 1;
+	h = vd->vd_height - 1;
+	l = vd->vd_offset.tp_col - 1;
+	r = w - l;
+	t = vd->vd_offset.tp_row - 1;
+	b = h - t;
+
+	vd->vd_driver->vd_drawrect(vd, 0, 0, w, t, 1, c); /* Top bar. */
+	vd->vd_driver->vd_drawrect(vd, 0, t, l, b, 1, c); /* Left bar. */
+	vd->vd_driver->vd_drawrect(vd, r, t, w, b, 1, c); /* Right bar. */
+	vd->vd_driver->vd_drawrect(vd, 0, b, w, h, 1, c); /* Bottom bar. */
+
+	return (0);
+}
+
 static int
 vt_proc_alive(struct vt_window *vw)
 {
@@ -1562,6 +1586,10 @@ skip_thunk:
 			return (error);
 
 		error = vt_change_font(vw, vf);
+		if (error == 0) {
+			/* XXX: replace 0 with current bg color. */
+			vt_set_border(vw, vf, 0);
+		}
 		vtfont_unref(vf);
 		return (error);
 	}