VisualizerWithKeyCallback.h

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// -                        Open3D: www.open3d.org                            -
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// The MIT License (MIT)
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// Copyright (c) 2018 www.open3d.org
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#pragma once

#include <map>

#include "Open3D/Visualization/Visualizer/Visualizer.h"

namespace open3d {
namespace visualization {

class VisualizerWithKeyCallback : public Visualizer {
public:
    typedef std::pair<int, std::function<bool(Visualizer *)>> KeyCallbackPair;

public:
    VisualizerWithKeyCallback();
    ~VisualizerWithKeyCallback() override;
    VisualizerWithKeyCallback(const VisualizerWithKeyCallback &) = delete;
    VisualizerWithKeyCallback &operator=(const VisualizerWithKeyCallback &) =
            delete;

public:
    void PrintVisualizerHelp() override;
    void RegisterKeyCallback(int key,
                             std::function<bool(Visualizer *)> callback);
    void RegisterKeyActionCallback(
            int key, std::function<bool(Visualizer *, int, int)> callback);

protected:
    void KeyPressCallback(GLFWwindow *window,
                          int key,
                          int scancode,
                          int action,
                          int mods) override;
    std::string PrintKeyToString(int key);

protected:
    std::map<int, std::function<bool(Visualizer *)>> key_to_callback_;
    std::map<int, std::function<bool(Visualizer *, int, int)>>
            key_action_to_callback_;
};

}  // namespace visualization
}  // namespace open3d