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 /* This file is part of the KDE project
  * Copyright (C) 2007 Boudewijn Rempt <boud@kde.org>
  * Copyright (C) 2007 Thorsten Zachmann <zachmann@kde.org>
  * Copyright (C) 2007 Jan Hambrecht <jaham@gmx.net>
  * Copyright (C) 2009 Thomas Zander <zander@kde.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library 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
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #ifndef KO_CONNECTION_SHAPE_H
 #define KO_CONNECTION_SHAPE_H
 
 #include "KoParameterShape.h"
 
 #include "flake_export.h"
 
 #define KOCONNECTIONSHAPEID "KoConnectionShape"
 
 class KoConnectionShapePrivate;
 
 /// API docs go here
 class FLAKE_EXPORT KoConnectionShape : public KoParameterShape
 {
 public:
     enum Type {
         Standard, ///< escapes connected shapes with straight lines, connects with perpendicular lines
         Lines,    ///< escapes connected shapes with straight lines, connects with straight line
         Straight, ///< one straight line between connected shapes
         Curve     ///< a single curved line between connected shapes
     };
 
     // IDs of the connecting handles
     enum HandleId {
         StartHandle,
         EndHandle,
         ControlHandle_1,
         ControlHandle_2,
         ControlHandle_3
     };
 
     KoConnectionShape();
     ~KoConnectionShape() override;
 
     // reimplemented
     void saveOdf(KoShapeSavingContext &context) const override;
 
     // reimplemented
     bool loadOdf(const KoXmlElement &element, KoShapeLoadingContext &context) override;
 
     // reimplemented
     QString pathShapeId() const override;
 
     /**
      * Sets the first shape this connector is connected to
      *
      * Passing a null pointer as the first parameter will sever the connection.
      *
      * @param shape the shape to connect to or null to reset the connection
      * @param connectionPointId the id of the connection point to connect to
      * @return true if connection could be established, otherwise false
      */
     bool connectFirst(KoShape *shape, int connectionPointId);
 
     /**
     * Sets the second shape the connector is connected to
     *
     * Passing a null pointer as the first parameter will sever the connection.
     *
     * @param shape the shape to connect to or null to reset the connection
     * @param connectionPointId the id of the connection point to connect to
     * @return true if connection could be established, otherwise false
     */
     bool connectSecond(KoShape *shape, int connectionPointId);
 
     /**
      * Return the first shape this connection is attached to, or null if none.
      */
     KoShape *firstShape() const;
 
     /**
      * Return the connection point id of the first shape we are connected to.
      * In case we are not connected to a first shape the return value is undefined.
      * @see firstShape(), KoShape::connectionPoints()
      */
     int firstConnectionId() const;
 
     /**
      * Return the second shape this connection is attached to, or null if none.
      */
     KoShape *secondShape() const;
 
     /**
      * Return the connection point id of the second shape we are connected to.
      * In case we are not connected to a second shape the return value is undefined.
      * @see firstShape(), KoShape::connectionPoints()
      */
     int secondConnectionId() const;
 
     /**
      * Finishes the loading of a connection.
      */
     void finishLoadingConnection();
 
     /// Returns connection type
     Type type() const;
 
     /// Sets the connection type
     void setType(Type connectionType);
 
     /// Updates connections to shapes
     void updateConnections();
 
 protected:
     /// reimplemented
     void moveHandleAction(int handleId, const QPointF &point, Qt::KeyboardModifiers modifiers = Qt::NoModifier) override;
 
     /// reimplemented
     void updatePath(const QSizeF &size) override;
 
     /// reimplemented
     void shapeChanged(ChangeType type, KoShape *shape) override;
 
 private:
     Q_DECLARE_PRIVATE(KoConnectionShape)
 };
 
 #endif