launchpad-sequencer/PlaybackScreen.h

#pragma once
#include "Screen.h"
#include "Sequencer.h"
#include "Player.h"

class PlaybackScreen : public Screen
{
    typedef Screen parent;

    typedef unsigned int MessageDisplayOffset;
    typedef BeatSequenceNoteInformation::BeatIndexMultiset BeatIndexMultiset;

    const MessageDisplayOffset messageDisplayShift = midi::Launchpad::height / 2; 
    const midi::Launchpad::KeyCoordinate beatsHeight = midi::Launchpad::height - 1;

    Player::BeatIndex beatDisplayOffset;
    MessageDisplayOffset messageDisplayOffset;

public:

    midi::Launchpad::KeyCoordinate beatDisplayWidth = midi::Launchpad::width - 1;

    PlaybackScreen(Sequencer& seq);
    
    void enable();

    void beforeBeat(Player::BeatIndex beat);
    void afterBeat(Player::BeatIndex beat);

protected:

	virtual void keyPressed(unsigned char x, unsigned char y);
	virtual void keyReleased(unsigned char x, unsigned char y);

    virtual void refresh(unsigned char x, unsigned char y);

private:

    void toggleOnMessage(std::shared_ptr<midi::NoteOnMessage> noteOnMessage_ptr, Player::BeatIndex beatIndex);
    midi::LaunchpadColor getBeatColor(std::shared_ptr<midi::NoteOnMessage> noteOnMessage_ptr, BeatIndex beatIndex);
    static bool beatsInSequence(BeatIndex a, BeatIndex b, BeatIndex c);
};