CurvePaletteBaseEvents.hpp

#pragma once
#include "CurvePaletteBaseStates.hpp"
#include "CurvePoint.hpp"
 
#include <Curve/Point/CurvePointModel.hpp>
#include <Curve/Point/CurvePointView.hpp>
#include <Curve/Segment/CurveSegmentModel.hpp>
#include <Curve/Segment/CurveSegmentView.hpp>
 
#include <score/statemachine/StateMachineUtils.hpp>
#include <score/tools/Clamp.hpp>
#include <score/tools/SafeCast.hpp>
 
class QGraphicsItem;
namespace Curve
{
class SegmentModel;
namespace Element
{
struct Nothing_tag
{
  static constexpr const int value = 0;
};
struct Point_tag
{
  static constexpr const int value = 1;
};
struct Segment_tag
{
  static constexpr const int value = 2;
};
}
 
template <typename Element_T, typename Modifier_T>
struct CurveEvent : public score::PositionedEvent<Curve::Point>
{
  static constexpr const int user_type = Element_T::value + Modifier_T::value;
  CurveEvent(const Curve::Point& pt, const QGraphicsItem* item)
      : score::PositionedEvent<Curve::Point>{pt, QEvent::Type(QEvent::User + user_type)}
  {
    if constexpr(std::is_same_v<Element_T, Element::Point_tag>)
    {
      auto& m = safe_cast<const PointView*>(item)->model();
      pointId = {m.previous(), m.following()};
    }
    else if constexpr(std::is_same_v<Element_T, Element::Segment_tag>)
    {
      segmentId = safe_cast<const SegmentView*>(item)->model().id();
    }
  }
 
  PointId pointId;
  Id<SegmentModel> segmentId;
};
 
using ClickOnNothing_Event
    = CurveEvent<Element::Nothing_tag, score::Modifier::Click_tag>;
using ClickOnPoint_Event = CurveEvent<Element::Point_tag, score::Modifier::Click_tag>;
using ClickOnSegment_Event
    = CurveEvent<Element::Segment_tag, score::Modifier::Click_tag>;
 
using MoveOnNothing_Event = CurveEvent<Element::Nothing_tag, score::Modifier::Move_tag>;
using MoveOnPoint_Event = CurveEvent<Element::Point_tag, score::Modifier::Move_tag>;
using MoveOnSegment_Event = CurveEvent<Element::Segment_tag, score::Modifier::Move_tag>;
 
using ReleaseOnNothing_Event
    = CurveEvent<Element::Nothing_tag, score::Modifier::Release_tag>;
using ReleaseOnPoint_Event
    = CurveEvent<Element::Point_tag, score::Modifier::Release_tag>;
using ReleaseOnSegment_Event
    = CurveEvent<Element::Segment_tag, score::Modifier::Release_tag>;
}