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The JavaFX implementation of the Interacto library

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/*
 * Interacto
 * Copyright (C) 2020 Arnaud Blouin
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see .
 */
package io.github.interacto.jfx.interaction.library;

import javafx.scene.input.ScrollEvent;

/**
 * Scrolling interaction data implementation with write access.
 */
public class ScrollDataImpl extends ModifierDataImpl implements ScrollData {
	/** The scrolled node. */
	protected Object scrolledNode;

	/** The X-coordinate of the scroll position. */
	protected double px;

	/** The Y-coordinate of the scroll position. */
	protected double py;

	/** The total increment of the scrolling. */
	protected double increment;

	@Override
	public Object getScrolledNode() {
		return scrolledNode;
	}

	@Override
	public double getPx() {
		return px;
	}

	@Override
	public double getPy() {
		return py;
	}

	@Override
	public double getIncrement() {
		return increment;
	}

	public void setData(final ScrollEvent event) {
		increment += event.getDeltaY();
		px = event.getX();
		py = event.getY();
		scrolledNode = event.getSource();
		altDown = event.isAltDown();
		shiftDown = event.isShiftDown();
		ctrlDown = event.isControlDown();
		metaDown = event.isMetaDown();
		shortcutDown = event.isShortcutDown();
	}

	@Override
	public void flush() {
		super.flush();
		px = 0d;
		py = 0d;
		increment = 0d;
		scrolledNode = null;
	}
}