MRSpaceMouseHandlerHidapi.h

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#pragma once
#ifndef __EMSCRIPTEN__
#include "MRSpaceMouseHandler.h"
#include "MRSpaceMouseDevice.h"
#include "MRViewerEventsListener.h"
#include "MRMesh/MRVector.h"
 
#include <hidapi/hidapi.h>
 
#include <atomic>
#include <bitset>
#include <condition_variable>
#include <mutex>
#include <thread>
#include <unordered_map>
 
#ifdef __APPLE__
#include <hidapi/hidapi_darwin.h>
#endif
#ifdef _WIN32
#include "MRPch/MRWinapi.h"
#include <hidapi/hidapi_winapi.h>
#endif
 
namespace MR::SpaceMouse
{
 
class MRVIEWER_CLASS HandlerHidapi : public Handler, public PostFocusListener
{
public:
    HandlerHidapi();
    ~HandlerHidapi() override;
 
    bool initialize( std::function<void(const std::string&)> deviceSignal ) override;
    void handle() override;
 
    // set state of zoom by mouse scroll (to fix scroll signal from SpaceMouse driver)
    MRVIEWER_API void activateMouseScrollZoom( bool activeMouseScrollZoom );
    // get state of zoom by mouse scroll
    MRVIEWER_API bool isMouseScrollZoomActive()
    {
        return activeMouseScrollZoom_;
    }
 
private:
    void initListenerThread_();
    virtual void postFocus_( bool focused ) override;
 
    void processAction_( const Action& action );
 
    // update (rewrite its data) SpaceMouseAction if DataPacketRaw is not empty
    void updateActionWithInput_( const DataPacketRaw& packet, int packet_length, Action& action );
 
    bool findAndAttachDevice_( bool verbose );
 
private:
    std::function<void(const std::string&)> deviceSignal_;
    hid_device* device_ = nullptr;
    std::unique_ptr<Device> smDevice_;
    size_t numMsg_ = 0;
    std::thread listenerThread_;
    std::atomic_bool terminateListenerThread_{ false };
    std::mutex syncThreadMutex_; // which thread reads and handles SpaceMouse data
    std::condition_variable cv_; // notify on thread change
    DataPacketRaw dataPacket_;    // packet from listener thread
    int packetLength_ = 0;
    std::atomic_bool active_{ false };
    bool activeMouseScrollZoom_ = false;
};
 
}
#endif