From e8e32784774b1cd409d0dfea1f20e2b25e31618d Mon Sep 17 00:00:00 2001
From: Bent Bisballe Nyeng <deva@aasimon.org>
Date: Fri, 27 Jan 2017 22:43:49 +0100
Subject: Fix pixel buffer assertion in line draws outside the pixel buffer.

---
 plugingui/painter.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/plugingui/painter.cc b/plugingui/painter.cc
index 3c290f3..3e6fa48 100644
--- a/plugingui/painter.cc
+++ b/plugingui/painter.cc
@@ -54,7 +54,10 @@ void Painter::setColour(const Colour& colour)
 static void plot(PixelBufferAlpha& pixbuf, const Colour& colour,
                  int x, int y, double c)
 {
-	if((x >= (int)pixbuf.width) || (y >= (int)pixbuf.height))
+	if((x >= (int)pixbuf.width) ||
+	   (y >= (int)pixbuf.height) ||
+	   (x < 0) ||
+	   (y < 0))
 	{
 		return;
 	}
-- 
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