File indexing completed on 2024-05-19 04:36:38

 /* 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_ANCHOR_MANAGER_H
 #define TIKZ_UI_ANCHOR_MANAGER_H
 
 #include <QObject>
 #include <QVector>
 #include <QHash>
 
 #include <tikz/core/MetaPos.h>
 
 class QGraphicsScene;
 class QGraphicsView;
 
 namespace tikz {
 namespace ui {
 
 class DocumentPrivate;
 class NodeItem;
 class AnchorHandle;
 
 class AnchorManager : public QObject
 {
     Q_OBJECT
 
     public:
         /**
          * Constructor.
          */
         AnchorManager(QGraphicsScene * scene, tikz::ui::DocumentPrivate * document, QObject * parent = nullptr);
 
         /**
          * Destructor.
          */
         virtual ~AnchorManager();
 
         /**
          * Returns the associated QGraphicsScene.
          */
         QGraphicsScene * scene() const;
 
     //
     // show/hide Node anchor handles
     //
     public Q_SLOTS:
         /**
          * Hide all existing anchor handles.
          */
         void hideAnchors();
 
         /**
          * Show all existing anchor handles.
          */
         void showAnchors();
 
         /**
          * Add all Node%s in the document.
          */
         void addAllNodes();
 
         /**
          * Add all Node anchors for @p node.
          */
         void addNode(NodeItem * node);
 
         /**
          * Removes all Node anchors for @p node.
          */
         void removeNode(NodeItem * node);
 
         /**
          * Remove all 
          */
         void clear();
 
     public:
         /**
          * Get the node with anchor for the scene position @p scenePos.
          * If a node/anchor qt @p scenePos exists, the returned MetaPos
          * contains the metaPos->node() and metaPos->anchor(), otherwise
          * the returned MetaPos points to @p scenePos.
          *
          * The QGraphicsView @p view is required, since @p scenePos must first
          * be transformed into view coordinates as the handles have the flag
          * QGraphicsItem::ItemIgnoresTransformations is set.
          */
         tikz::core::MetaPos anchorAt(const QPointF & scenePos,
                                      QGraphicsView * view);
 
     //
     // internal to the manager
     //
     protected Q_SLOTS:
         /**
          * This slot is called right before a node is destroyed. At this point,
          * the node is already half destroyed, i.e., only the QObject part is
          * still valid.
          */
         void nodeDestroyed(QObject * obj);
 
     private:
         tikz::ui::DocumentPrivate * m_doc;
         QGraphicsScene * m_scene;
         QVector <NodeItem *> m_nodes;
         QHash <NodeItem *, QVector<AnchorHandle *>> m_handleMap;
 };
 
 }
 }
 
 #endif // TIKZ_UI_ANCHOR_MANAGER_H
 
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