ps2_AnsiTranslator.h

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/*
Copyright (C) 2017 Steve Benz <s8878992@hotmail.com>

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301
USA
*/
#pragma once

#include "ps2_KeyboardLeds.h"
#include "ps2_KeyboardOutput.h"

namespace ps2 {
    template <typename Diagnostics = NullDiagnostics>
    class AnsiTranslator
    {
    public:
        AnsiTranslator();
        AnsiTranslator(Diagnostics &diagnostics);
        void reset();

        char translatePs2Keycode(ps2::KeyboardOutput ps2Scan);

        inline bool isCtrlKeyDown() const { return this->isCtrlDown; }

        inline bool isShiftKeyDown() const { return this->isShiftDown; }

        inline void setCapsLock(bool newCapsLockValue) { this->isCapsLockMode = newCapsLockValue; }

        inline bool getCapsLock() const { return this->isCapsLockMode; }

        inline void setNumLock(bool newNumLockValue) { this->isNumLockMode = newNumLockValue; }

        inline bool getNumLock() const { return this->isNumLockMode; }

    private:
        char rawTranslate(KeyboardOutput ps2Key);
        bool isKeyAffectedByNumlock(KeyboardOutput ps2Key, char rawTranslation);

        static const char ps2ToAsciiMap[] PROGMEM;
        static const byte pauseKeySequence[] PROGMEM;

        bool isSpecial;
        bool isUnmake;
        bool isCtrlDown;
        bool isShiftDown;
        bool isCapsLockMode;
        bool isNumLockMode;
        int pauseKeySequenceIndex;
        Diagnostics *diagnostics;
    };
}

#include "ps2_AnsiTranslator.hpp"