java类java.awt.image.ImageProducer的实例源码

/**
 * Construct an image from an ImageProducer object.
 */
public ToolkitImage(ImageProducer is) {
    source = is;
    if (is instanceof InputStreamImageSource) {
        src = (InputStreamImageSource) is;
    }
}

/**
 * Maps {@code Component.createImage(ImageProducer)} through queue
 */
public Image createImage(final ImageProducer imageProducer) {
    return (runMapping(new MapAction<Image>("createImage") {
        @Override
        public Image map() {
            return getSource().createImage(imageProducer);
        }
    }));
}

/**
 * Creates an image from the specified image producer.
 * @param     producer  the image producer
 * @return    the image produced
 * @since     JDK1.0
 */
public Image createImage(ImageProducer producer) {
    ComponentPeer peer = this.peer;
    if ((peer != null) && ! (peer instanceof LightweightPeer)) {
        return peer.createImage(producer);
    }
    return getToolkit().createImage(producer);
}

/**
 * This is a utility method to help in loading icon images.
 * It takes the name of a resource file associated with the
 * current object's class file and loads an image object
 * from that file.  Typically images will be GIFs.
 * <p>
 * @param resourceName  A pathname relative to the directory
 *          holding the class file of the current class.  For example,
 *          "wombat.gif".
 * @return  an image object.  May be null if the load failed.
 */
public Image loadImage(final String resourceName) {
    try {
        final URL url = getClass().getResource(resourceName);
        if (url != null) {
            final ImageProducer ip = (ImageProducer) url.getContent();
            if (ip != null) {
                return Toolkit.getDefaultToolkit().createImage(ip);
            }
        }
    } catch (final Exception ignored) {
    }
    return null;
}

protected void do_button_actionPerformed(ActionEvent e) {
    try {
        Robot robot = new Robot();// 创建Robot对象
        Toolkit toolkit = Toolkit.getDefaultToolkit();// 获得Toolkit对象
        Rectangle area = new Rectangle(toolkit.getScreenSize());// 设置截取区域为全屏
        // 将BufferedImage转换成Image
        BufferedImage bufferedImage = robot.createScreenCapture(area);
        ImageProducer producer = bufferedImage.getSource();
        Image image = toolkit.createImage(producer);
        imageLabel.setIcon(new ImageIcon(image));// 显示图片
    } catch (AWTException e1) {
        e1.printStackTrace();
    }
}

/** Returns a <code>GenericImageSinglePassIterator</code> that is
 * either a <code>IntPixelIterator</code> or a <code>BytePixelIterator</code>.
 * @param image the image to iterate over.
 * @param iteratorType one of these 8 BufferedImage types:
 * TYPE_INT_ARGB, TYPE_INT_ARGB_PRE, TYPE_INT_RGB, TYPE_INT_BGR,
 * TYPE_3BYTE_BGR, TYPE_BYTE_GRAY, TYPE_4BYTE_ABGR, TYPE_4BYTE_ABGR_PRE.
 * @return a <code>GenericImageSinglePassIterator</code> for the image provided.
 */
public static GenericImageSinglePassIterator get(Image image,int iteratorType) {
    if(!(iteratorType==BufferedImage.TYPE_INT_ARGB ||
            iteratorType==BufferedImage.TYPE_INT_ARGB_PRE ||
            iteratorType==BufferedImage.TYPE_INT_RGB ||
            iteratorType==BufferedImage.TYPE_INT_BGR ||
            iteratorType==BufferedImage.TYPE_3BYTE_BGR ||
            iteratorType==BufferedImage.TYPE_BYTE_GRAY ||
            iteratorType==BufferedImage.TYPE_4BYTE_ABGR ||
            iteratorType==BufferedImage.TYPE_4BYTE_ABGR_PRE)) {
        throw new IllegalArgumentException("illegal iterator type: "+iteratorType);
    }
    final ImageProducer producer = image.getSource();
    final Consumer consumer = new Consumer(producer, iteratorType);
    // ImageProducer.startProduction often starts its own thread, but it's not
    // required to.  Sometimes in my testing a BufferedImage would make
    // this a blocking call.  So to be safe this call should be in its
    // own thread:
    Thread productionThread = new Thread("GenericImageSinglePassIterator: Production Thread") {
        @Override
        public void run() {
            producer.startProduction(consumer);
        }
    };
    productionThread.start();
    return consumer.getPixelIterator();
}

/**
 * Creates an image from the specified image producer.
 * @param     producer  the image producer
 * @return    the image produced
 * @since     JDK1.0
 */
public Image createImage(ImageProducer producer) {
    ComponentPeer peer = this.peer;
    if ((peer != null) && ! (peer instanceof LightweightPeer)) {
        return peer.createImage(producer);
    }
    return getToolkit().createImage(producer);
}

/**
 * This is a utility method to help in loading icon images.
 * It takes the name of a resource file associated with the
 * current object's class file and loads an image object
 * from that file.  Typically images will be GIFs.
 * <p>
 * @param resourceName  A pathname relative to the directory
 *          holding the class file of the current class.  For example,
 *          "wombat.gif".
 * @return  an image object.  May be null if the load failed.
 */
public Image loadImage(final String resourceName) {
    try {
        final URL url = getClass().getResource(resourceName);
        if (url != null) {
            final ImageProducer ip = (ImageProducer) url.getContent();
            if (ip != null) {
                return Toolkit.getDefaultToolkit().createImage(ip);
            }
        }
    } catch (final Exception ignored) {
    }
    return null;
}

/**
 * Construct an image from an ImageProducer object.
 */
public ToolkitImage(ImageProducer is) {
    source = is;
    if (is instanceof InputStreamImageSource) {
        src = (InputStreamImageSource) is;
    }
}

/**
 * Creates an image from the specified image producer.
 * @param     producer  the image producer
 * @return    the image produced
 * @since     JDK1.0
 */
public Image createImage(ImageProducer producer) {
    ComponentPeer peer = this.peer;
    if ((peer != null) && ! (peer instanceof LightweightPeer)) {
        return peer.createImage(producer);
    }
    return getToolkit().createImage(producer);
}