Merge commits "r4999, r500, r5001" to branch 0.60

git-svn-id: svn+ssh://svn.tuxfamily.org/svnroot/qet/qet/branches/0.60@5033 bfdf4180-ca20-0410-9c96-a3a8aa849046

sources/QetGraphicsItemModeler/qetgraphicshandleritem.h

@@ -0,0 +1,53 @@
+/*
+    Copyright 2006-2017 The QElectroTech Team
+    This file is part of QElectroTech.
+
+    QElectroTech is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 2 of the License, or
+    (at your option) any later version.
+
+    QElectroTech is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#ifndef QETGRAPHICSHANDLERITEM_H
+#define QETGRAPHICSHANDLERITEM_H
+
+#include <QGraphicsItem>
+
+/**
+ * @brief The QetGraphicsHandlerItem class
+ * This graphics item represents a point, destined to be used as an handler,
+ * for modifie the geometrie of a another graphics item (like shapes).
+ * The graphics item to be modified, must call "installSceneEventFilter" of this item with itself for argument,.
+ * The ghraphics item to be modified, need to reimplement "sceneEventFilter" for create the modification behavior.
+ */
+class QetGraphicsHandlerItem : public QGraphicsItem
+{
+    public:
+        QetGraphicsHandlerItem(qreal size = 15);
+        virtual QRectF boundingRect() const;
+		
+		enum { Type = UserType + 1200};
+		virtual int type() const {return Type;}
+		
+		void setColor(QColor color);
+
+    protected:
+        virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
+
+    private:
+        qreal m_size,
+              m_previous_zoom_factor = 1;
+		QColor m_color;
+		
+	public:
+		static QVector<QetGraphicsHandlerItem *> handlerForPoint(const QVector<QPointF> &points, int size = 15);
+};
+
+#endif // QETGRAPHICSHANDLERITEM_H