node_base.h

#pragma once
 
#include <QFont>
#include <QGraphicsItem>
#include <QGraphicsSvgItem>
#include <QString>
 
#include "app_configs.h"
#include "config.h"
#include "ids.h"
#include "result.h"

class NodeBase : public QGraphicsItem
{
public:
  enum
  {
    Type = Types::BASE_NODE
  };

  NodeBase(const QString& id, const QString& nodeId, std::shared_ptr<NodeConfig> config, QGraphicsItem* parent);

  virtual ~NodeBase();

  QString id() const;

  virtual int type() const override;

  virtual QString nodeId() const;

  virtual VoidResult start();

  virtual std::shared_ptr<NodeConfig> config() const;

  virtual QRectF boundingRect() const override;

  virtual QRectF labelBoundingRect() const;
 
  virtual QRectF nodeRect() const;

  virtual QRectF scaledRect() const;

  virtual QRectF drawingRect(const QRectF& input) const;

  virtual QPainterPath nodeShape(const QRectF& bounds) const;

  void paintNode(const QRectF& bounds, const QColor& background, const QPen& text, QPainter* painter);

  virtual QPixmap nodePixmap() const;

  virtual QString nodeIcon() const;

  virtual void toggleLabelVisibility();
 
protected:
  std::shared_ptr<NodeConfig> mConfig;  
 
  QGraphicsPixmapItem* mPixmapItem = nullptr;  
  QString mIconPath = "";                      
  QGraphicsSvgItem* mIconItem = nullptr;       

  virtual void setPixmap(const QPixmap& pixmap);

  virtual void setIcon(const QString& path, const QColor& iconColor);

  virtual void setLabel(const QString& name, qreal fontSize);

  virtual void setLabelName(const QString& name);

  virtual void setLabelSize(qreal fontSize, const QSizeF& boundingSize);

  virtual void paintLabel(QPainter* painter, const QRectF& area, const QPen& pen) const;

  virtual void paintPixmap(QPainter* painter) const;
 
private:
  const QString mId;     
  const QRectF mBounds;  
 
  QString mLabelText;
  QFont mLabelFont = Fonts::Main;
  bool mPaintLabel = true;
  QRectF mScaledBounds;  

  qreal computeScaleFactor() const;
};