MidiNoteView.hpp

#pragma once
#include <Midi/MidiNote.hpp>
 
#include <QGraphicsItem>
 
namespace Midi
{
class View;
class Presenter;
class NoteView final : public QGraphicsItem
{
  Q_INTERFACES(QGraphicsItem)
public:
  const Note& note;
 
  NoteView(const Note& n, Presenter& presenter, View* parent);
 
  void setWidth(qreal w) noexcept
  {
    if(m_width != w)
    {
      prepareGeometryChange();
      m_width = w;
    }
  }
 
  void setHeight(qreal h) noexcept
  {
    if(m_height != h)
    {
      prepareGeometryChange();
      m_height = h;
    }
  }
 
  QRectF boundingRect() const override { return {0, 0, m_width, m_height}; }
  void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
      override;
 
  QRectF computeRect() const noexcept;
  QPointF closestPos(QPointF note) const noexcept;
 
private:
  bool canEdit() const;
  QVariant itemChange(GraphicsItemChange change, const QVariant& value) override;
  void hoverEnterEvent(QGraphicsSceneHoverEvent* event) override;
  void hoverMoveEvent(QGraphicsSceneHoverEvent* event) override;
  void hoverLeaveEvent(QGraphicsSceneHoverEvent* event) override;
  void mousePressEvent(QGraphicsSceneMouseEvent* event) override;
  void mouseMoveEvent(QGraphicsSceneMouseEvent* event) override;
  void mouseReleaseEvent(QGraphicsSceneMouseEvent* event) override;
 
  Presenter& m_presenter;
 
  float m_width{};
  float m_height{};
 
  enum Action
  {
    None,
    Move,
    Scale,
    ChangeVelocity,
    Duplicate
  } m_action{};
};
}