QGraphicsRangeSlider.hpp

#pragma once
#include <score/graphics/widgets/Constants.hpp>
 
#include <ossia/network/value/value.hpp>
#include <ossia/network/value/vec.hpp>
 
#include <QGraphicsItem>
#include <QObject>
 
#include <score_lib_base_export.h>
 
#include <verdigris>
 
 
namespace score
{
class SCORE_LIB_BASE_EXPORT QGraphicsRangeSlider final
    : public QObject
    , public QGraphicsItem
{
  W_OBJECT(QGraphicsRangeSlider)
  SCORE_GRAPHICS_ITEM_TYPE(160)
  QRectF m_rect{defaultRangeSliderSize};
 
  double m_start{0.}, m_end{1.};
  double m_min{0}, m_max{1};
  double m_init_start{0.}, m_init_end{1.};
 
public:
  bool moving = false;
 
  explicit QGraphicsRangeSlider(QGraphicsItem* parent);
  ~QGraphicsRangeSlider();
 
  void setStart(double start);
  void setEnd(double end);
  void setRange(double min, double max, ossia::vec2f init);
 
  void setValue(ossia::vec2f value);
  ossia::vec2f value() const noexcept;
  ossia::vec2f m_execValue{};
  void setExecutionValue(ossia::vec2f); // TODO
  void resetExecution();                // TODO
 
  void startChanged(double arg_1) E_SIGNAL(SCORE_LIB_BASE_EXPORT, startChanged, arg_1)
  void endChanged(double arg_1) E_SIGNAL(SCORE_LIB_BASE_EXPORT, endChanged, arg_1)
 
  void sliderMoved() E_SIGNAL(SCORE_LIB_BASE_EXPORT, sliderMoved)
  void sliderReleased() E_SIGNAL(SCORE_LIB_BASE_EXPORT, sliderReleased)
private:
  void showTypeIn(QPointF scenePos);
 
  [[nodiscard]] double to01(double v) const noexcept;
  [[nodiscard]] double from01(double v) const noexcept;
 
  void mousePressEvent(QGraphicsSceneMouseEvent* event) override;
  void mouseMoveEvent(QGraphicsSceneMouseEvent* event) override;
  void mouseReleaseEvent(QGraphicsSceneMouseEvent* event) override;
  bool sceneEvent(QEvent* event) override;
  QRectF boundingRect() const override;
  void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
      override;
  void updateRect();
  qreal y_factor{0.005};
  qreal d2s{}, d2c{}, d2e{}, ypos{}, ydiff{};
  double val1{}, val2{};
 
  bool m_hasExec{};
 
  enum Handle
  {
    START,
    CENTER,
    END,
    NONE
  };
  // NONE, not the default START: `handle` is what says whether a drag is in
  // progress, so an item that has never been pressed must not read as dragging.
  Handle handle{NONE};
  QRectF m_rangeRect{};
};
}