rtmidi/Launchpad.h

#pragma once
#include "Midi.h"
#include <utility>

class LaunchpadColor
{
public:
	unsigned char red, green;

	LaunchpadColor();
	LaunchpadColor(unsigned char r, unsigned char g);

	bool operator==(const LaunchpadColor& color) const;
	bool operator!=(const LaunchpadColor& color) const;
};

class Launchpad
{
public:
	typedef void (*KeyEventCallback)(unsigned char x, unsigned char y, void* data);
	
	static const unsigned char width = 9;
	static const unsigned char height = 9;

private:
	LaunchpadColor colors[width][height];
	bool colorSet[width][height];

protected:
	MidiIn midiin;
	MidiOut midiout;

public:
	KeyEventCallback keyPressedCallback;
	KeyEventCallback keyReleasedCallback;
    void* keyEventCallbackData;

	Launchpad();

	bool issetColor(unsigned char x, unsigned char y) const;
	const LaunchpadColor& getColor(unsigned char x, unsigned char y) const;
	void setColor(unsigned char x, unsigned char y, const LaunchpadColor& color);
	void setColorAll(const LaunchpadColor& color);

protected:
	void keyPressed(unsigned char x, unsigned char y);
	void keyReleased(unsigned char x, unsigned char y);

private:
	static void midiMessageCallback(double timeStamp, MidiMessage &message, void *launchpad);
};

class LaunchpadScreen
{
    LaunchpadColor colors[Launchpad::width][Launchpad::height];
    Launchpad* launchpad;
    bool active;

public:
    LaunchpadScreen();
    virtual void enable();
    virtual void disable();
    bool enabled() const;
    void setLaunchpad(Launchpad& launchpad);

protected:
	virtual void keyPressed(unsigned char x, unsigned char y);
	virtual void keyReleased(unsigned char x, unsigned char y);
	const LaunchpadColor& getColor(unsigned char x, unsigned char y) const;
	void setColor(unsigned char x, unsigned char y, const LaunchpadColor& color);
	void setColorAll(const LaunchpadColor& color);
    void sync();

private:
    static void keyPressedCallback(unsigned char x, unsigned char y, void* screen);
    static void keyReleasedCallback(unsigned char x, unsigned char y, void* screen);
};