rtmidi/tests/launchpad-screen.cpp

#include <iostream>
#include <cstdlib>
#include "RtMidi.h"
#include "MidiMessage.h"
#include "Launchpad.h"

// Platform-dependent sleep routines.
#if defined(__WINDOWS_MM__)
  #include <windows.h>
  #define SLEEP( milliseconds ) Sleep( (DWORD) milliseconds ) 
#else // Unix variants
  #include <unistd.h>
  #define SLEEP( milliseconds ) usleep( (unsigned long) (milliseconds * 1000.0) )
#endif

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

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

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, 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();

    while(true) 
    {
        SLEEP(1);
    }

    return 0;
}