1 files changed, 10 insertions, 14 deletions
diff --git a/examples/widgets/graphicsview/diagramscene/arrow.cpp b/examples/widgets/graphicsview/diagramscene/arrow.cpp
index 88160d9399..9b2472bb33 100644
--- a/examples/widgets/graphicsview/diagramscene/arrow.cpp
+++ b/examples/widgets/graphicsview/diagramscene/arrow.cpp
@@ -50,19 +50,17 @@
 
 
 #include "arrow.h"
+#include "diagramitem.h"
 
-#include <qmath.h>
-#include <QPen>
 #include <QPainter>
+#include <QPen>
+#include <QtMath>
 
 //! [0]
 Arrow::Arrow(DiagramItem *startItem, DiagramItem *endItem, QGraphicsItem *parent)
-    : QGraphicsLineItem(parent)
+    : QGraphicsLineItem(parent), myStartItem(startItem), myEndItem(endItem)
 {
-    myStartItem = startItem;
-    myEndItem = endItem;
     setFlag(QGraphicsItem::ItemIsSelectable, true);
-    myColor = Qt::black;
     setPen(QPen(myColor, 2, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
 }
 //! [0]
@@ -98,7 +96,7 @@ void Arrow::updatePosition()
 
 //! [4]
 void Arrow::paint(QPainter *painter, const QStyleOptionGraphicsItem *,
-          QWidget *)
+                  QWidget *)
 {
     if (myStartItem->collidesWithItem(myEndItem))
         return;
@@ -113,15 +111,13 @@ void Arrow::paint(QPainter *painter, const QStyleOptionGraphicsItem *,
     QLineF centerLine(myStartItem->pos(), myEndItem->pos());
     QPolygonF endPolygon = myEndItem->polygon();
     QPointF p1 = endPolygon.first() + myEndItem->pos();
-    QPointF p2;
     QPointF intersectPoint;
-    QLineF polyLine;
     for (int i = 1; i < endPolygon.count(); ++i) {
-        p2 = endPolygon.at(i) + myEndItem->pos();
-        polyLine = QLineF(p1, p2);
-        QLineF::IntersectType intersectType =
-            polyLine.intersect(centerLine, &intersectPoint);
-        if (intersectType == QLineF::BoundedIntersection)
+        QPointF p2 = endPolygon.at(i) + myEndItem->pos();
+        QLineF polyLine = QLineF(p1, p2);
+        QLineF::IntersectionType intersectionType =
+            polyLine.intersects(centerLine, &intersectPoint);
+        if (intersectionType == QLineF::BoundedIntersection)
             break;
         p1 = p2;
     }