Java Icon to Image iconToImage(Icon icon)

Description

icon To Image

License

Open Source License

Declaration

public static Image iconToImage(Icon icon)

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsEnvironment;
import java.awt.Image;

import java.awt.Transparency;
import java.awt.image.BufferedImage;

import javax.swing.Icon;
import javax.swing.ImageIcon;

public class Main {
    public static Image iconToImage(Icon icon) {
        if (icon instanceof ImageIcon) {
            return ((ImageIcon) icon).getImage();
        } else {//from   ww  w .ja v a2 s  .c  o m

            BufferedImage image = createCompatibleTranslucentImage(icon.getIconWidth(), icon.getIconHeight());
            Graphics2D g = image.createGraphics();
            icon.paintIcon(null, g, 0, 0);
            g.dispose();
            return image;
        }
    }

    /**
     * <p>Returns a new translucent compatible image of the specified width and
     * height. That is, the returned <code>BufferedImage</code> is compatible with
     * the graphics hardware. If the method is called in a headless
     * environment, then the returned BufferedImage will be compatible with
     * the source image.</p>
     *
     * @see #createCompatibleImage(java.awt.image.BufferedImage)
     * @see #createCompatibleImage(java.awt.image.BufferedImage, int, int)
     * @see #createCompatibleImage(int, int)
     * @see #loadCompatibleImage(java.net.URL)
     * @see #toCompatibleImage(java.awt.image.BufferedImage)
     * @param width the width of the new image
     * @param height the height of the new image
     * @return a new translucent compatible <code>BufferedImage</code> of the
     *   specified width and height
     */
    public static BufferedImage createCompatibleTranslucentImage(int width, int height) {
        return isHeadless() ? new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB)
                : getGraphicsConfiguration().createCompatibleImage(width, height, Transparency.TRANSLUCENT);
    }

    private static boolean isHeadless() {
        return GraphicsEnvironment.isHeadless();
    }

    /**
     * <p>Returns a new compatible image with the same width, height and
     * transparency as the image specified as a parameter. That is, the
     * returned BufferedImage will be compatible with the graphics hardware.
     * If this method is called in a headless environment, then
     * the returned BufferedImage will be compatible with the source
     * image.</p>
     *
     * @see java.awt.Transparency
     * @see #createCompatibleImage(int, int)
     * @see #createCompatibleImage(java.awt.image.BufferedImage, int, int)
     * @see #createCompatibleTranslucentImage(int, int)
     * @see #loadCompatibleImage(java.net.URL)
     * @see #toCompatibleImage(java.awt.image.BufferedImage)
     * @param image the reference image from which the dimension and the
     *   transparency of the new image are obtained
     * @return a new compatible <code>BufferedImage</code> with the same
     *   dimension and transparency as <code>image</code>
     */
    public static BufferedImage createCompatibleImage(BufferedImage image) {
        return createCompatibleImage(image, image.getWidth(), image.getHeight());
    }

    /**
     * <p>Returns a new compatible image of the specified width and height, and
     * the same transparency setting as the image specified as a parameter.
     * That is, the returned <code>BufferedImage</code> is compatible with
     * the graphics hardware. If the method is called in a headless
     * environment, then the returned BufferedImage will be compatible with
     * the source image.</p>
     *
     * @see java.awt.Transparency
     * @see #createCompatibleImage(java.awt.image.BufferedImage)
     * @see #createCompatibleImage(int, int)
     * @see #createCompatibleTranslucentImage(int, int)
     * @see #loadCompatibleImage(java.net.URL)
     * @see #toCompatibleImage(java.awt.image.BufferedImage)
     * @param width the width of the new image
     * @param height the height of the new image
     * @param image the reference image from which the transparency of the new
     *   image is obtained
     * @return a new compatible <code>BufferedImage</code> with the same
     *   transparency as <code>image</code> and the specified dimension
     */
    public static BufferedImage createCompatibleImage(BufferedImage image, int width, int height) {
        return isHeadless() ? new BufferedImage(width, height, image.getType())
                : getGraphicsConfiguration().createCompatibleImage(width, height, image.getTransparency());
    }

    /**
     * <p>Returns a new opaque compatible image of the specified width and
     * height. That is, the returned <code>BufferedImage</code> is compatible with
     * the graphics hardware. If the method is called in a headless
     * environment, then the returned BufferedImage will be compatible with
     * the source image.</p>
     *
     * @see #createCompatibleImage(java.awt.image.BufferedImage)
     * @see #createCompatibleImage(java.awt.image.BufferedImage, int, int)
     * @see #createCompatibleTranslucentImage(int, int)
     * @see #loadCompatibleImage(java.net.URL)
     * @see #toCompatibleImage(java.awt.image.BufferedImage)
     * @param width the width of the new image
     * @param height the height of the new image
     * @return a new opaque compatible <code>BufferedImage</code> of the
     *   specified width and height
     */
    public static BufferedImage createCompatibleImage(int width, int height) {
        return isHeadless() ? new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB)
                : getGraphicsConfiguration().createCompatibleImage(width, height);
    }

    private static GraphicsConfiguration getGraphicsConfiguration() {
        return GraphicsEnvironment.getLocalGraphicsEnvironment().getDefaultScreenDevice().getDefaultConfiguration();
    }
}

Java Icon to Image iconToImage(Icon icon)

Description

License

Declaration

Method Source Code

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