design/designer-base/src/main/java/com/fr/design/icon/WarningIcon.java

package com.fr.design.icon;

import com.fr.base.svg.SVGLoader;
import com.fr.base.svg.SystemScaleUtils;
import com.fr.design.utils.SvgDrawUtils;
import com.fr.log.FineLoggerFactory;

import javax.swing.GrayFilter;
import javax.swing.ImageIcon;
import java.awt.Component;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.MediaTracker;
import java.awt.image.ImageObserver;

/**
 * 警告图片
 * 
 * @author zhou
 * @since 2012-3-28下午10:20:29
 */
public class WarningIcon extends ImageIcon {
	protected final static Component COMPONENT = new Component() {
	};
	protected final static MediaTracker TRACKER = new MediaTracker(COMPONENT);
	private final static Image WARNING_IMAGE = SVGLoader.load("/com/fr/design/standard/warning.svg");
	private static final boolean HI_DPI_SUPPORT = SystemScaleUtils.isJreHiDPIEnabled();
	public static final float SYSTEM_SCALE = SystemScaleUtils.sysScale();
	private Image mainImage = null;
	private ImageObserver imageObserver;
	private int width = -1;
	private int height = -1;

	public WarningIcon(Image mainImage) {
		this.mainImage = mainImage;

		if (this.mainImage != null) {
			loadImage(this.mainImage);
		}
	}

	@Override
	public synchronized void paintIcon(Component c, Graphics g, int x, int y) {
		//裁剪绘制svg的位置,以免影响到图标右侧的文字
		Graphics2D graphics = (Graphics2D) g.create(x, y, WARNING_IMAGE.getWidth(null), WARNING_IMAGE.getHeight(null));
		if (mainImage != null) {
			SvgDrawUtils.doDrawSVG(graphics, () -> SvgDrawUtils.drawImage(graphics, mainImage, x, y, null));
		}
		if (WARNING_IMAGE != null) {
			SvgDrawUtils.doDrawSVG(graphics, () -> SvgDrawUtils.drawImage(graphics, WARNING_IMAGE, x, y, null));
		}
		graphics.dispose();
	}

	/**
	 * Loads the image, returning only when the image is loaded.
	 * 
	 * @param image
	 *            the image
	 */
	protected void loadImage(Image image) {
		synchronized (TRACKER) {
			TRACKER.addImage(image, 0);
			try {
				TRACKER.waitForID(0, 0);
			} catch (InterruptedException e) {
                FineLoggerFactory.getLogger().error(e.getMessage(), e);
                Thread.currentThread().interrupt();
			}

			TRACKER.statusID(0, false);
			TRACKER.removeImage(image, 0);

			width = image.getWidth(imageObserver);
			height = image.getHeight(imageObserver);
		}
	}

	/**
	 * Returns this icon's <code>Image</code>.
	 * 
	 * @return the <code>Image</code> object for this <code>ImageIcon</code>
	 */
	public Image getImage() {
		return mainImage;
	}

	public LockIcon getDisabledLockIcon() {
		Image mainDisabledImage = GrayFilter.createDisabledImage(mainImage);

		return new LockIcon(mainDisabledImage);
	}

	/**
	 * Gets the width of the icon.
	 * 
	 * @return the width in pixels of this icon
	 */
	public int getIconWidth() {
		//如果环境支持高清化,drawImage可能会缩放绘制的图像比例,需要保证svg正常显示的同时调整绘制范围
		return HI_DPI_SUPPORT ? (int) (width / SYSTEM_SCALE) : width;
	}

	/**
	 * Gets the height of the icon.
	 * 
	 * @return the height in pixels of this icon
	 */
	public int getIconHeight() {
		//如果环境支持高清化,drawImage可能会缩放绘制的图像比例,需要保证svg正常显示的同时调整绘制范围
		return HI_DPI_SUPPORT ? (int) (height / SYSTEM_SCALE) : height;
	}

	{
		loadImage(WARNING_IMAGE);
	}
}