Slider.h

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// The MIT License (MIT)
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#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