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 /* This file is part of the TikZKit project.
  *
  * Copyright (C) 2014 Dominik Haumann <dhaumann@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, see
  * <http://www.gnu.org/licenses/>.
  */
 
 #ifndef TIKZ_UI_NODE_TOOL_H
 #define TIKZ_UI_NODE_TOOL_H
 
 #include "AbstractTool.h"
 #include "Handle.h"
 
 #include <QVector>
 #include <memory>
 
 namespace tikz {
 
 namespace core {
     class Transaction;
 }
 
 namespace ui {
 
 class NodeItem;
 
 /**
  * The NodeTool allows to modify a NodeItem.
  * The supported operations are: move, resize, rotate.
  */
 class NodeTool : public AbstractTool
 {
     Q_OBJECT
 
     public:
         /**
          * Constructor with graphics scene @p scene.
          */
         NodeTool(NodeItem * node, QGraphicsScene * scene);
 
         /**
          * Virtual destructor.
          */
         virtual ~NodeTool();
 
     //
     // sub classes: reimplement as needed
     //
     public:
         /**
          * This function is called whenever the mouse moves in the graphics
          * scene.
          */
         void mouseMoveEvent(QGraphicsSceneMouseEvent * event) override;
 
         /**
          * This function is called whenever a mouse button is pressed in the
          * graphics scene.
          */
         void mousePressEvent(QGraphicsSceneMouseEvent * event) override;
 
         /**
          * This function is called whenever a mouse button is released in the
          * graphics scene.
          */
         void mouseReleaseEvent(QGraphicsSceneMouseEvent * event) override;
 
         /**
          * Reimplemented to cache key events
          */
         void keyPressEvent(QKeyEvent * event) override;
 
     //
     // internal to NodeTool
     //
     protected Q_SLOTS:
         /**
          * Make sure the handles are positioned at the correct location
          */
         void updateHandlePositions();
 
         /**
          * Create node handles for the node.
          */
         void createNodeHandles();
 
         /**
          * This slot is called whenever a handle moved.
          * The node is then either moved, resized or rotated according to
          * the sender @p handle.
          * @param handle the handle that moved
          * @param scenePos the mouse move position in scene coordinates
          * @param view the view that generated this event
          */
         void handleMoved(tikz::ui::Handle * handle, const QPointF & scenePos, QGraphicsView * view);
 
         /**
          * This slot is called whenever a handle was pressed with the mouse.
          */
         void handleMousePressed(tikz::ui::Handle * handle, const QPointF & scenePos, QGraphicsView * view);
 
         /**
          * This slot is called whenever a handle was released with the mouse.
          */
         void handleMouseReleased(tikz::ui::Handle * handle, const QPointF & scenePos, QGraphicsView * view);
 
     protected:
         /**
          * Get the handle position for a specific handle in scene coordinates.
          */
         QPointF handlePos(Handle::Position pos);
 
 
     private:
         NodeItem * m_node;
         QVector<Handle *> m_handles;
         std::unique_ptr<tikz::core::Transaction> m_transaction;
 };
 
 }
 }
 
 #endif // TIKZ_UI_NODE_TOOL_H
 
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