Slider.h

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// ----------------------------------------------------------------------------
// -                        Open3D: www.open3d.org                            -
// ----------------------------------------------------------------------------
// Copyright (c) 2018-2024 www.open3d.org
// SPDX-License-Identifier: MIT
// ----------------------------------------------------------------------------
 
#pragma once
 
#include <functional>
 
#include "open3d/visualization/gui/Widget.h"
 
namespace open3d {
namespace visualization {
namespace gui {
 
class Slider : public Widget {
public:
    enum Type { INT, DOUBLE };
    explicit Slider(Type type);
    ~Slider();

    int GetIntValue() const;
    double GetDoubleValue() const;
    void SetValue(double val);
 
    double GetMinimumValue() const;
    double GetMaximumValue() const;
    void SetLimits(double min_value, double max_value);
 
    Size CalcPreferredSize(const LayoutContext& theme,
                           const Constraints& constraints) const override;
 
    DrawResult Draw(const DrawContext& context) override;

    void SetOnValueChanged(std::function<void(double)> on_value_changed);
 
private:
    struct Impl;
    std::unique_ptr<Impl> impl_;
};
 
}  // namespace gui
}  // namespace visualization
}  // namespace open3d