rtmidi/tests/launchpad-screen.cpp

#include <iostream>
#include "LaunchpadScreen.h"

struct DrawScreen : public midi::LaunchpadScreen
{
    virtual void keyPressed(unsigned char x, unsigned char y);

    void all(unsigned short a, unsigned short b)
    {
        setColorAll(midi::LaunchpadColor(a, b));
    }
};

midi::Launchpad l;
DrawScreen s[8];
    
void DrawScreen::keyPressed(unsigned char x, unsigned char y)
{
    // std::cout << "(" << (int)x << ", " << (int)y << ")" << std::endl;

    if(y == 8) {
        std::cout << "switch to screen #" << (int)x << std::endl;
        disable();
        s[x].enable();
    } else {
        setColor(x, y, midi::LaunchpadColor(3 - getColor(x, y).red, 3 - getColor(x, y).green));
    }
}

int main()
{
    for(int i=0; i<8; i++) {
        s[i].setLaunchpad(l);
        s[i].all(i % 4, (int)((float)i/4));
    }
    s[4].enable();

    std::cin.ignore();

    return 0;
}