CursorUtil.java Source code

Introduction

Here is the source code for CursorUtil.java

Source

/*
 * @(#)CursorUtil.java   1.0 Apr 27, 2008
 *
 *   The MIT License
 *
 *   Copyright (c) 2008 Malachi de AElfweald <malachid@gmail.com>
 *
 *   Permission is hereby granted, free of charge, to any person obtaining a copy
 *   of this software and associated documentation files (the "Software"), to deal
 *   in the Software without restriction, including without limitation the rights
 *   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 *   copies of the Software, and to permit persons to whom the Software is
 *   furnished to do so, subject to the following conditions:
 *
 *   The above copyright notice and this permission notice shall be included in
 *   all copies or substantial portions of the Software.
 *
 *   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 *   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 *   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 *   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 *   THE SOFTWARE.
 */
//package org.eoti.awt;

import java.awt.*;
import java.awt.image.*;

public class CursorUtil {
    public enum CursorType {
        Crosshair(Cursor.CROSSHAIR_CURSOR),
        //Custom(Cursor.CUSTOM_CURSOR),
        Default(Cursor.DEFAULT_CURSOR), EastResize(Cursor.E_RESIZE_CURSOR), Hand(Cursor.HAND_CURSOR), Move(
                Cursor.MOVE_CURSOR), None(createNoCursor()), NorthResize(Cursor.N_RESIZE_CURSOR), NorthEastResize(
                        Cursor.NE_RESIZE_CURSOR), NorthWestResize(Cursor.NW_RESIZE_CURSOR), SouthResize(
                                Cursor.S_RESIZE_CURSOR), SouthEastResize(Cursor.SE_RESIZE_CURSOR), SouthWestResize(
                                        Cursor.SW_RESIZE_CURSOR), Text(Cursor.TEXT_CURSOR), WestResize(
                                                Cursor.W_RESIZE_CURSOR), Wait(Cursor.WAIT_CURSOR);

        CursorType(int type) {
            cursor = new Cursor(type);
        }

        CursorType(Cursor cursor) {
            this.cursor = cursor;
        }

        protected Cursor cursor;

        public Cursor getCursor() {
            return cursor;
        }
    }

    protected static Cursor createNoCursor() {
        try {
            return createCursor(GraphicsUtil.createImage(1, 1), 0, 0, "NO_CURSOR");
        } catch (Exception e) {
            return null;
        }
    }

    public static Cursor createCursor(BufferedImage img, int hotspotX, int hotspotY, String name)
            throws IndexOutOfBoundsException, Exception {
        return createCursor(img, new Point(hotspotX, hotspotY), name);
    }

    public static Cursor createCursor(BufferedImage img, Point hotspot, String name)
            throws IndexOutOfBoundsException, Exception {
        Toolkit tk = Toolkit.getDefaultToolkit();
        Dimension d = tk.getBestCursorSize(img.getWidth(), img.getHeight());
        if ((d.width == img.getWidth()) && (d.height == img.getHeight()))
            return tk.createCustomCursor(img, hotspot, name);

        if ((d.width + d.height) < 2)
            throw new Exception("Invalid Size");

        BufferedImage newImg = GraphicsUtil.createImage(d.width, d.height);
        Graphics2D g2 = newImg.createGraphics();
        g2.drawImage(img, // what to draw
                0, // dest left
                0, // dest top
                newImg.getWidth(), // dest right
                newImg.getHeight(), // dest bottom
                0, // src left
                0, // src top
                img.getWidth(), // src right
                img.getHeight(), // src bottom
                null // to notify of image updates
        );

        return tk.createCustomCursor(newImg, hotspot, name);
    }
}