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

namespace midi {

void LaunchpadScreen::keyPressed(unsigned char x, unsigned char y)
{
}

void LaunchpadScreen::keyReleased(unsigned char x, unsigned char y)
{
}

const LaunchpadColor& LaunchpadScreen::getColor(unsigned char x, unsigned char y) const
{
    return colors[x][y];
}

void LaunchpadScreen::setColor(unsigned char x, unsigned char y, const LaunchpadColor& color)
{
    if(active && (!launchpad->issetColor(x, y) || launchpad->getColor(x, y) != color)) {
        launchpad->setColor(x, y, color);
    }

    colors[x][y] = color;
}

void LaunchpadScreen::setColorAll(const LaunchpadColor& color)
{
	for(unsigned char x = 0; x < Launchpad::width; x++) {
		for(unsigned char y = 0; y < Launchpad::height; y++) {
			if(x != 8 || y != 8)
			{
				setColor(x, y, color);
			}
		}
	}
}

void LaunchpadScreen::sync()
{
	for(unsigned char x = 0; x < Launchpad::width; x++) {
		for(unsigned char y = 0; y < Launchpad::height; y++) {
			if((x != 8 || y != 8)
			    && (!launchpad->issetColor(x, y) || launchpad->getColor(x, y) != colors[x][y])) {
                launchpad->setColor(x, y, colors[x][y]);
			}
		}
	}
}

LaunchpadScreen::LaunchpadScreen()
    : launchpad(0), active(false)
{
}

void LaunchpadScreen::enable()
{
    if(!launchpad) {
        throw "no launchpad set";
    }

    launchpad->keyEventCallbackData = (void*)this;
    launchpad->keyPressedCallback = keyPressedCallback;
    launchpad->keyReleasedCallback = keyReleasedCallback;
    sync();
    active = true;
}

void LaunchpadScreen::disable()
{
    launchpad->keyPressedCallback = 0;
    launchpad->keyReleasedCallback = 0;
    launchpad->keyEventCallbackData = 0;
    active = false;
}

bool LaunchpadScreen::enabled() const
{
    return active;
}

void LaunchpadScreen::setLaunchpad(Launchpad& l)
{
    if(enabled()) {
        disable();
        launchpad = &l;
        enable();
    } else {
        launchpad = &l;
    }
}

void LaunchpadScreen::keyPressedCallback(unsigned char x, unsigned char y, void* screen)
{
    ((LaunchpadScreen*)screen)->keyPressed(x, y);
}

void LaunchpadScreen::keyReleasedCallback(unsigned char x, unsigned char y, void* screen)
{
    ((LaunchpadScreen*)screen)->keyReleased(x, y);
}

} // namespace