From 245c6f522b136cf5d35eb95efb02163da55c6b4b Mon Sep 17 00:00:00 2001
From: dismine <dismine@gmail.com>
Date: Fri, 23 Jan 2015 17:05:23 +0200
Subject: [PATCH] Don't show arrow if edge too short.

--HG--
branch : develop
---
 src/libs/vlayout/vposition.cpp | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/libs/vlayout/vposition.cpp b/src/libs/vlayout/vposition.cpp
index e99b5a0c9..23c977cf3 100644
--- a/src/libs/vlayout/vposition.cpp
+++ b/src/libs/vlayout/vposition.cpp
@@ -662,15 +662,21 @@ QVector<QPointF> VPosition::Triplet(const QLineF &edge) const
 //---------------------------------------------------------------------------------------------------------------------
 QPainterPath VPosition::ShowDirection(const QLineF &edge)
 {
+    const int arrowLength = 14;
+    QPainterPath path;
+    if (edge.length()/arrowLength < 5)
+    {
+        return  path;
+    }
+
     QLineF arrow = edge;
     arrow.setLength(edge.length()/2.0);
 
     //Reverse line because we want start arrow from this point
     arrow = QLineF(arrow.p2(), arrow.p1());
     const qreal angle = arrow.angle();//we each time change line angle, better save original angle value
-    arrow.setLength(14);//arrow length in pixels
+    arrow.setLength(arrowLength);//arrow length in pixels
 
-    QPainterPath path;
     arrow.setAngle(angle-35);
     path.moveTo(arrow.p1());
     path.lineTo(arrow.p2());