Touchpad.hh

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#ifndef TOUCHPAD_HH
#define TOUCHPAD_HH

#include "JoystickDevice.hh"
#include "MSXEventListener.hh"
#include "StateChangeListener.hh"
#include "StringSetting.hh"
#include "gl_mat.hh"

namespace openmsx {

class MSXEventDistributor;
class StateChangeDistributor;
class Display;
class CommandController;
class TclObject;
class Interpreter;

class Touchpad final : public JoystickDevice, private MSXEventListener
                     , private StateChangeListener
{
public:
        Touchpad(MSXEventDistributor& eventDistributor,
                 StateChangeDistributor& stateChangeDistributor,
                 Display& display,
                 CommandController& commandController);
        ~Touchpad() override;

        template<typename Archive>
        void serialize(Archive& ar, unsigned version);

private:
        void createTouchpadStateChange(EmuTime::param time,
                byte x, byte y, bool touch, bool button);
        void parseTransformMatrix(Interpreter& interp, const TclObject& value);
        gl::ivec2 transformCoords(gl::ivec2 xy);

        // Pluggable
        const std::string& getName() const override;
        string_view getDescription() const override;
        void plugHelper(Connector& connector, EmuTime::param time) override;
        void unplugHelper(EmuTime::param time) override;

        // JoystickDevice
        byte read(EmuTime::param time) override;
        void write(byte value, EmuTime::param time) override;

        // MSXEventListener
        void signalMSXEvent(const std::shared_ptr<const Event>& event,
                            EmuTime::param time) override;
        // StateChangeListener
        void signalStateChange(const std::shared_ptr<StateChange>& event) override;
        void stopReplay(EmuTime::param time) override;

        MSXEventDistributor& eventDistributor;
        StateChangeDistributor& stateChangeDistributor;
        Display& display;

        StringSetting transformSetting;
        gl::matMxN<2, 3, float> m; // transformation matrix

        EmuTime start; // last time when CS switched 0->1
        gl::ivec2 hostPos; // host state
        byte hostButtons; //
        byte x, y;          // msx state (different from host state
        bool touch, button; //    during replay)
        byte shift; // shift register to both transmit and receive data
        byte channel; // [0..3]   0->x, 3->y, 1,2->not used
        byte last; // last written data, to detect transitions
};

} // namespace openmsx

#endif