package mightypork.rogue.screens;


import mightypork.gamecore.core.App;
import mightypork.gamecore.graphics.fonts.IFont;
import mightypork.gamecore.gui.Action;
import mightypork.gamecore.gui.components.painters.TextPainter;
import mightypork.gamecore.gui.screens.Overlay;
import mightypork.gamecore.input.Trigger;
import mightypork.gamecore.resources.Res;
import mightypork.utils.math.AlignX;
import mightypork.utils.math.color.pal.RGB;
import mightypork.utils.math.constraints.num.Num;
import mightypork.utils.math.constraints.rect.RectBound;
import mightypork.utils.math.constraints.vect.Vect;
import mightypork.utils.string.StringProvider;


/**
 * FPS indicator overlay
 *
 * @author Ondřej Hruška (MightyPork)
 */
public class FpsOverlay extends Overlay {

	TextPainter tp;


	public FpsOverlay()
	{

		/*
		 * Toggle key: F3
		 */
		bindKey(App.cfg().getKeyStroke("global.fps_meter"), Trigger.RISING, new Action() {

			@Override
			public void execute()
			{
				setVisible(!isVisible());
			}
		});

		final IFont font = Res.getFont("thin");

		final Num h = root.height();
		final RectBound constraint = root.shrink(h.perc(3)).topRight().startRect().growDown(h.perc(5).max(16));

		tp = new TextPainter(font, AlignX.RIGHT, RGB.YELLOW, new StringProvider() {

			@Override
			public String getString()
			{
				return App.gfx().getFps() + " fps";
			}
		});

		tp.setRect(constraint);
		tp.setShadow(RGB.BLACK_60, Vect.make(tp.height().div(8).round()));

		root.add(tp);

		setVisible(false); // initially hide.
	}


	@Override
	public int getZIndex()
	{
		return Integer.MAX_VALUE;
	}
}