MidiPresenter.hpp

#pragma once
#include <ossia/detail/hash_map.hpp>
 
#include <QPointer>
#include <Process/LayerPresenter.hpp>
 
#include <Midi/Commands/MoveNotes.hpp>
#include <Midi/MidiProcess.hpp>
 
#include <score/command/Dispatchers/SingleOngoingCommandDispatcher.hpp>
 
#include <nano_observer.hpp>
class QMimeData;
namespace Midi
{
class NoteView;
class View;
class Note;
class Presenter final
    : public Process::LayerPresenter
    , public Nano::Observer
{
  W_OBJECT(Presenter)
public:
  explicit Presenter(
      const Midi::ProcessModel& model, View* view, const Process::Context& ctx,
      QObject* parent);
  ~Presenter() override;
 
  void setWidth(qreal width, qreal defaultWidth) override;
  void setHeight(qreal height) override;
 
  void putToFront() override;
  void putBehind() override;
 
  void on_zoomRatioChanged(ZoomRatio) override;
 
  void parentGeometryChanged() override;
  void on_focusChanged() override;
 
  const Midi::ProcessModel& model() const noexcept;
  const Midi::View& view() const noexcept;
 
  void on_deselectOtherNotes();
  void on_duplicate();
  void on_noteChanged(NoteView& v, int semitones);
  void on_noteChangeFinished(NoteView& v, int semitones);
  void on_noteScaled(const Note& note, double newScale);
  void on_transpose(int semitones);
  void on_requestVelocityChange(const Note& note, double velocityDelta);
  void on_velocityChangeFinished();
  void on_noteSelectionChanged(NoteView*, bool ok);
 
private:
  bool eventFilter(QObject* watched, QEvent* event) override;
  QPointer<QObject> m_keyWatched;
 
  void updateNote(NoteView&);
  void on_noteAdded(const Note&);
  void on_noteRemoving(const Note&);
  void on_notesReplaced();
  void on_drop(const QPointF& pos, const QMimeData&);
 
  std::vector<Id<Note>> selectedNotes() const;
  void pushNoteSelection();
 
  View* m_view{};
  ossia::hash_map<const Note*, NoteView*> m_notes;
  ossia::hash_set<NoteView*> m_selectedNotes;
  bool m_selectionPushPending{};
 
  SingleOngoingCommandDispatcher<MoveNotes> m_moveDispatcher;
  SingleOngoingCommandDispatcher<ChangeNotesVelocity> m_velocityDispatcher;
 
  std::optional<std::pair<int, int>> m_origMovePitches{}; // lowest, highest
  std::optional<double> m_origMoveStart{};
 
  ZoomRatio m_zr{};
  void fillContextMenu(
      QMenu& menu, QPoint pos, QPointF scenepos,
      const Process::LayerContextMenuManager& cm) override;
};
}