From 4d0d67872e8d97658b9e5e10d290c7942f14dfa4 Mon Sep 17 00:00:00 2001
From: Richard Heck <rgheck@comcast.net>
Date: Fri, 19 Mar 2010 01:43:53 +0000
Subject: [PATCH] Fix at least the most immediate manifestation of bug #6454.

Investigation of this bug revealed that we are blinking the cursor even
when it is not visible. This should also be reverted. It may, in a way,
be that bug that caused this one, but this check is worth doing anyway.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@33797 a592a061-630c-0410-9148-cb99ea01b6c8
---
 src/TextMetrics.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/TextMetrics.cpp b/src/TextMetrics.cpp
index 80a6449053..6fca429b5a 100644
--- a/src/TextMetrics.cpp
+++ b/src/TextMetrics.cpp
@@ -328,7 +328,12 @@ bool TextMetrics::isRTLBoundary(pit_type pit, pos_type pos,
 	// no RTL boundary at paragraph start
 	if (pos == 0)
 		return false;
-	
+
+	// if the metrics have not been calculated, then we are not
+	// on screen and can safely ignore issues about boundaries.
+	if (!contains(pit))
+		return false;
+
 	ParagraphMetrics & pm = par_metrics_[pit];
 	// no RTL boundary in empty paragraph
 	if (pm.rows().empty())
-- 
2.39.2