editor_settings.h

// SPDX-FileCopyrightText: © 2020-2022, 2024-2025 Alexandros Theodotou <alex@zrythm.org>
// SPDX-License-Identifier: LicenseRef-ZrythmLicense
 
#pragma once
 
#include "utils/icloneable.h"
#include "utils/math_utils.h"
 
#include <QtQmlIntegration/qqmlintegration.h>
 
namespace zrythm::structure::arrangement
{

class EditorSettings : public QObject
{
  Q_OBJECT
  QML_ELEMENT
  Q_PROPERTY (double x READ getX WRITE setX NOTIFY xChanged)
  Q_PROPERTY (double y READ getY WRITE setY NOTIFY yChanged)
  Q_PROPERTY (
    double horizontalZoomLevel READ getHorizontalZoomLevel WRITE
      setHorizontalZoomLevel NOTIFY horizontalZoomLevelChanged)
 
public:
  EditorSettings (QObject * parent = nullptr) : QObject (parent) { }
 
  // =========================================================
  // QML interface
  // =========================================================
 
  double getX () const { return scroll_start_x_; }
  void   setX (double x)
  {
    auto clamped_x = clamp_scroll_start_x (x);
    if (utils::math::floats_equal (scroll_start_x_, clamped_x))
      return;
 
    scroll_start_x_ = clamped_x;
    Q_EMIT xChanged (scroll_start_x_);
  }
  Q_SIGNAL void xChanged (double x);
 
  double getY () const { return scroll_start_y_; }
  void   setY (double y)
  {
    auto clamped_y = clamp_scroll_start_y (y);
    if (utils::math::floats_equal (scroll_start_y_, clamped_y))
      return;
    scroll_start_y_ = clamped_y;
    Q_EMIT yChanged (scroll_start_y_);
  }
  Q_SIGNAL void yChanged (double y);
 
  double getHorizontalZoomLevel () const { return hzoom_level_; }
  void   setHorizontalZoomLevel (double hzoom_level)
  {
    if (utils::math::floats_equal (hzoom_level_, hzoom_level))
      return;
    hzoom_level_ = hzoom_level;
    Q_EMIT horizontalZoomLevelChanged (hzoom_level);
  }
  Q_SIGNAL void horizontalZoomLevelChanged (double hzoom_level);
 
  // =========================================================
 
  double clamp_scroll_start_x (double x);
 
  double clamp_scroll_start_y (double y);

  void append_scroll (double dx, double dy, bool validate);
 
protected:
  friend void init_from (
    EditorSettings        &obj,
    const EditorSettings  &other,
    utils::ObjectCloneType clone_type)
  {
    obj.scroll_start_x_ = other.scroll_start_x_;
    obj.scroll_start_y_ = other.scroll_start_y_;
    obj.hzoom_level_ = other.hzoom_level_;
  }
 
private:
  static constexpr auto kScrollStartXKey = "scrollStartX"sv;
  static constexpr auto kScrollStartYKey = "scrollStartY"sv;
  static constexpr auto kHZoomLevelKey = "hZoomLevel"sv;
  friend void to_json (nlohmann::json &j, const EditorSettings &settings);
  friend void from_json (const nlohmann::json &j, EditorSettings &settings);
 
private:
  double scroll_start_x_ = 0;

  double scroll_start_y_ = 0;

  double hzoom_level_ = 1.0;
};
 
}