text: /*********************************************************************************
   *
   * Inviwo - Interactive Visualization Workshop
   *
   * Copyright (c) 2014-2021 Inviwo Foundation
   * All rights reserved.
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   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
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   * 1. Redistributions of source code must retain the above copyright notice, this
   * list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright notice,
   * this list of conditions and the following disclaimer in the documentation
   * and/or other materials provided with the distribution.
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   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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  #pragma once
  
  #include <inviwo/qt/editor/inviwoqteditordefine.h>
  #include <inviwo/qt/editor/connectiongraphicsitem.h>
  #include <inviwo/qt/editor/linkdialog/linkdialoggraphicsitems.h>
  
  class QPainter;
  class QStyleOptionGraphicsItem;
  
  namespace inviwo {
  
  class DialogConnectionGraphicsItem;
  class LinkDialogProcessorGraphicsItem;
  class LinkDialogGraphicsScene;
  
  class IVW_QTEDITOR_API LinkDialogPropertyGraphicsItem : public GraphicsItemData<Property> {
  public:
      LinkDialogPropertyGraphicsItem(LinkDialogTreeItem* parent, Property* prop);
      ~LinkDialogPropertyGraphicsItem() = default;
  
      QSizeF sizeHint(Qt::SizeHint which, const QSizeF& constraint = QSizeF()) const;
  
      // override for qgraphicsitem_cast (refer qt documentation)
      enum { Type = UserType + LinkDialogPropertyGraphicsItemType };
      virtual int type() const override { return Type; }
  
      QPointF getConnectionPoint();
  
      bool propertyVisible() const;
      bool hasSubProperties() const;
  
      virtual int getLevel() const override;
  
      QPointF calculateArrowCenter(size_t curPort) const;
  
      void prepareGeometryChange() { QGraphicsItem::prepareGeometryChange(); }
  
      void addConnectionGraphicsItem(DialogConnectionGraphicsItem*);
      size_t getConnectionGraphicsItemCount() const;
      size_t getConnectionIndex(const DialogConnectionGraphicsItem* item) const;
      void removeConnectionGraphicsItem(DialogConnectionGraphicsItem*);
      const std::vector<DialogConnectionGraphicsItem*>& getConnectionGraphicsItems() const;
      std::vector<LinkDialogPropertyGraphicsItem*> getSubPropertyItemList(
          bool recursive = false) const;
  
      virtual void updatePositions() override;
      void showToolTip(QGraphicsSceneHelpEvent* event);
  
  protected:
      QPointF calculateArrowCenterLocal(size_t curPort) const;
      QRectF calculateArrowRect(size_t curPort) const;
      QRectF calculateArrowRect(DialogConnectionGraphicsItem* cItem) const;
  
      virtual void paint(QPainter* p, const QStyleOptionGraphicsItem* options,
                         QWidget* widget) override;
      virtual QVariant itemChange(GraphicsItemChange change, const QVariant& value) override;
  
  private:
      std::vector<DialogConnectionGraphicsItem*> connections_;
      std::vector<LinkDialogPropertyGraphicsItem*> subProperties_;
  };
  
  }  // namespace inviwo
  