com.sun.glass.ui.monocle.NativeCursor Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of javafx-graphics Show documentation
There is a newer version: 24-ea+15
/*
 * Copyright (c) 2013, 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 com.sun.glass.ui.monocle;

import com.sun.glass.ui.Size;

/**
 * Abstraction of a native cursor
 */
abstract class NativeCursor {

    /**
     * Is the cursor currently visible?
     */
    protected boolean isVisible = false;

    /**
     * Returns the preferred size of a native cursor.
     */
    abstract Size getBestSize();

    /**
     * Sets whether or not the cursor is visible. The implementation should set
     * the isVisible field. On success the isVisible field is set to the
     * visibility parameter.
     *
     * @param visibility the new setting for the cursor's visibility.
     */
    abstract void setVisibility(boolean visibility);

    /**
     * Queries whether or not the cursor is visible
     *
     * @return trueif the cursor is visible, false otherwise.
     */
    boolean getVisiblity() {
        return isVisible;
    }

    /**
     * Sets the cursor image
     *
     * @param cursorImage the cursor image, in BYTE_BGRA_PRE format
     */
    abstract void setImage(byte[] cursorImage);

    /**
     * Sets the location of the hot spot of the cursor on the screen
     *
     * @param x the new X location on the screen
     * @param y the new Y location on the screen
     */
    abstract void setLocation(int x, int y);

    /**
     * Sets the offset of the cursor's hot spot within the cursor image The hot
     * spot offsets default to 0, 0.
     *
     * @param hotspotX the X offset of the hot spot
     * @param hotspotY the Y offset of the hot spot.
     */
    abstract void setHotSpot(int hotspotX, int hotspotY);

    /**
     * Performs any necessary shutdown of the cursor infrastructure. Called only
     * once.
     */
    abstract void shutdown();
}