src/java.desktop/share/classes/java/awt/PointerInfo.java - master - niceSOFT/openjdk21

src/java.desktop/share/classes/java/awt/PointerInfo.java
81 строка3 KB
Phil Race
8283700: Add final or sealed modifier to appropriate java.awt API classes
30 мар 2022, 20:26
30 мар 2022, 20:26e85fa2f
/*
 * Copyright (c) 2003, 2014, 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;

/**
 * A class that describes the pointer position.
 * It provides the {@code GraphicsDevice} where the pointer is and
 * the {@code Point} that represents the coordinates of the pointer.
 * <p>
 * Instances of this class should be obtained via
 * {@link MouseInfo#getPointerInfo}.
 * The {@code PointerInfo} instance is not updated dynamically as the mouse
 * moves. To get the updated location, you must call
 * {@link MouseInfo#getPointerInfo} again.
 *
 * @see MouseInfo#getPointerInfo
 * @author Roman Poborchiy
 * @since 1.5
 */
public final class PointerInfo {

    private final GraphicsDevice device;
    private final Point location;

    /**
     * Package-private constructor to prevent instantiation.
     */
    PointerInfo(final GraphicsDevice device, final Point location) {
        this.device = device;
        this.location = location;
    }

    /**
     * Returns the {@code GraphicsDevice} where the mouse pointer was at the
     * moment this {@code PointerInfo} was created.
     *
     * @return {@code GraphicsDevice} corresponding to the pointer
     * @since 1.5
     */
    public GraphicsDevice getDevice() {
        return device;
    }

    /**
     * Returns the {@code Point} that represents the coordinates of the pointer
     * on the screen. See {@link MouseInfo#getPointerInfo} for more information
     * about coordinate calculation for multiscreen systems.
     *
     * @return coordinates of mouse pointer
     * @see MouseInfo
     * @see MouseInfo#getPointerInfo
     * @since 1.5
     */
    public Point getLocation() {
        return location;
    }
}