/*
 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code 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
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */
package java.awt.image;

/**
 * The ResolutionVariantItem class stores the resolution variant value as well
 * as scaled factors associated with it.
 *
 * @since 9
 */
public class ResolutionVariantItem<T> {

    private final T value;
    private final double scaleX;
    private final double scaleY;

    /**
     * Creates a new instance of ResolutionVariantItem.
     * @param value the resolution-variant value
     * @param scaleX the scale factor fox x-axis
     * @param scaleY the scale factor fox y-axis
     *
     * @since 9
     */
    public ResolutionVariantItem(T value, double scaleX, double scaleY) {
        this.value = value;
        this.scaleX = scaleX;
        this.scaleY = scaleY;
    }

    /**
     * Retrieves the value associated with this resolution-variant item.
     *
     * @return the resolution-variant value
     *
     * @since 9
     */
    public T getValue() {
        return value;
    }

    /**
     * Retrieves the x-axis scale factor associated with this resolution-variant
     * item.
     *
     * @return the scale factor fox x-axis
     *
     * @since 9
     */
    public double getScaleX() {
        return scaleX;
    }

    /**
     * Retrieves the y-axis scale factor associated with this resolution-variant
     * item.
     *
     * @return the scale factor fox y-axis
     *
     * @since 9
     */
    public double getScaleY() {
        return scaleY;
    }

    @Override
    @SuppressWarnings("rawtypes")
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }

        if (!(obj instanceof ResolutionVariantItem)) {
            return false;
        }

        ResolutionVariantItem rvItem = (ResolutionVariantItem) obj;
        return scaleX == rvItem.scaleX
                && scaleY == rvItem.scaleY
                && value.equals(rvItem.value);
    }

    @Override
    public int hashCode() {
        int hash = value.hashCode();
        hash = 31 * hash + Double.hashCode(scaleX);
        hash = 31 * hash + Double.hashCode(scaleY);
        return hash;
    }
}