catchscreenimageframe.java

动画素材图像语义标注系统：该系统实现对图片的语义标注

package cn.dxm.frame;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Panel;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.image.BufferedImage;

import javax.swing.JWindow;

import cn.dxm.util.CatchScreenImage;
import cn.dxm.util.GetCatchScreenImageRectangle;
import cn.dxm.util.ImageUtil;



public class CatchScreenImageFrame extends Panel {
	/**
	 * 
	 */
	private static final long serialVersionUID = 328470435314173400L;
	/**
	 * author:dxm
	 */

	private JWindow window;
	private BufferedImage screenImage;
	private BufferedImage catchImg;
	private Point first_point = new Point(0, 0);;
	private Point second_point = new Point(0, 0);
	private Rectangle rec;
	// 此标志为真是,表示截图,否则不能截图,鼠标托动时设为真,表示截图,当鼠标松开时,设为假.
	private boolean wheterCutImageflag = false;

	public CatchScreenImageFrame() {

		window = new JWindow();
		CatchScreenImage catchImage = new CatchScreenImage();
		screenImage = catchImage.catchScreenImage();
		window.add("Center", this);
		window.setSize(Toolkit.getDefaultToolkit().getScreenSize());
		window.setVisible(true);
		window.setAlwaysOnTop(true);
		
		addMouseListener(new MouseAdapter() {
			public void mousePressed(MouseEvent e) {
				if (first_point.x == 0) {
					first_point = new Point(e.getX(), e.getY());
				}
			}

			public void mouseReleased(MouseEvent e) {
				// 松开设是否截图标志为false,且对坐标点清空.
				wheterCutImageflag = false;
				first_point=new Point(0,0);
				second_point=new Point(0,0);
			}

			public void mouseClicked(MouseEvent e) {
				
				CatchScreenImage catchImage = new CatchScreenImage();
				// 如果截图成功.则将截图保存到默认文件夹下.
				if (rec != null) {
					catchImg = catchImage.catchChoiceImage(rec);
					ImageUtil.saveImage(catchImg,"src/c.jpg" );
				} else {// 截图失败,展示截图失败的图片.
					javax.swing.JOptionPane.showMessageDialog(null,"取样失败,请重试");
				}
					window.setVisible(false);		
			}
		});

		addMouseMotionListener(new MouseAdapter() {
			public void mouseDragged(MouseEvent e) {
				// 托动表示截图.
				wheterCutImageflag = true;
				second_point = new Point(e.getX(), e.getY());
				repaint();
			}
		});
	}


	public void paint(Graphics g) {
		Graphics2D g2d = (Graphics2D) g;
		g2d.drawImage(screenImage, 0, 0, getWidth(), getHeight(), getX(), getY(),
				getX() + getWidth(), getY() + getHeight(), this);

		g2d.setColor(Color.red);
		g2d.setStroke(new BasicStroke(2));

		if (this.wheterCutImageflag) {
			GetCatchScreenImageRectangle getRec = new GetCatchScreenImageRectangle();
			rec = getRec.getRectangle(first_point, second_point);
			g2d.drawRect(rec.x, rec.y, rec.width, rec.height);
		}

	}

	public void update(Graphics g) {
		paint(g);
	}



	public BufferedImage getCatchImg() {
		return catchImg;
	}

}