hisgram.java

java版的位图处理

import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import bmpinfo.Bmp_Information;
import java.awt.*;
import java.io.*;


public class hisgram extends  JDialog {

    Bmp_Information pro;
	int[] draw=new int[256];
	static Color color=null;
	static int max=1;
    public hisgram(java.awt.Frame parent, boolean modal,String file) {
        super(parent, modal);
		pro=new Bmp_Information(file);
		initComponents();
    }
    private void initComponents() {
        jPanel2 = new  JPanel();
        jPanel3=new JPanel();
        jLabel1=new JLabel("灰度值:");
        jLabel2=new JLabel("数     量:");
        jTextField1=new JTextField();
        jTextField1.setEditable(false);
        jTextField2=new JTextField();
        jTextField2.setEditable(false);  
        lightradio = new  JRadioButton();
        redradio = new  JRadioButton();
        greenradio = new  JRadioButton();
        blueradio = new  JRadioButton();
        getContentPane().setLayout(null);
        setTitle("\u76f4\u65b9\u56fe");
		setResizable(false);
        setDefaultCloseOperation( WindowConstants.DISPOSE_ON_CLOSE);
        jPanel2.setBorder(new TitledBorder("\u901a\u9053\u9009\u62e9"));
        lightradio.setText("混合亮度");
        jPanel2.add(lightradio);

        redradio.setText("\u7ea2\u8272\u901a\u9053");
        jPanel2.add(redradio);

        greenradio.setText("\u7eff\u8272\u901a\u9053");
        jPanel2.add(greenradio);

        blueradio.setText("\u84dd\u8272\u901a\u9053");
        blueradio.addActionListener(new  ActionListener() {
            public void actionPerformed( ActionEvent evt) {
                blueradioActionPerformed(evt);
            }
        });
        redradio.addActionListener(new  ActionListener() {
            public void actionPerformed( ActionEvent evt) {
                redradioActionPerformed(evt);
            }
        });
        greenradio.addActionListener(new  ActionListener() {
            public void actionPerformed( ActionEvent evt) {
                greenradioActionPerformed(evt);
            }
        });
        lightradio.addActionListener(new  ActionListener() {
            public void actionPerformed( ActionEvent evt) {
                lightradioActionPerformed(evt);
            }
        });
        canvas = new  Canva()
		{

			public void paint(Graphics g)
			{
				super.paint(g);
				g.setColor(color);
				max=1;
				for(int i=0;i<256;i++)
				{
					if(draw[i]>max) max=draw[i];
				}
				for(int i=0;i<draw.length;i++)
				{
					g.drawLine(i,210,i,(int)(210-210*(float)draw[i]/max));
				}
			}
		};
		canvas.addMouseListener(new MouseAdapter()
		{
			public void mouseEntered(MouseEvent e)
			{
				setCursor(Cursor.getPredefinedCursor(Cursor.CROSSHAIR_CURSOR));
			}
			public void mouseExited(MouseEvent e)
			{
				setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
			}
		});
		canvas.addMouseMotionListener(new MouseMotionAdapter()
		{
			public void mouseMoved(MouseEvent e)
			{
				if(e.getX()<=255){
					jTextField1.setText(Integer.toString(e.getX()));
					jTextField2.setText(Integer.toString(draw[e.getX()]));
				}
				else
					jTextField1.setText("255");
			}
		});

        getContentPane().add(canvas);
        jPanel2.add(blueradio);

        getContentPane().add(jPanel2);
        jPanel2.setBounds(285, 5, 120, 148);
        jPanel3.setBorder(new TitledBorder("当前灰度"));
        jPanel3.setLayout(null);
        jPanel3.add(jLabel1);
        jLabel1.setBounds(5,22,45,16);
        jPanel3.add(jTextField1);
        jTextField1.setBounds(50,20,60,20);
        jPanel3.add(jLabel2);
        jLabel2.setBounds(5,41,45,16);
        jPanel3.add(jTextField2);
        jTextField2.setBounds(50,40,60,20);
        getContentPane().add(jPanel3);
        jPanel3.setBounds(285, 150, 120, 70);
        



        java.awt.Dimension screenSize = java.awt.Toolkit.getDefaultToolkit().getScreenSize();
        setBounds((screenSize.width-418)/2, (screenSize.height-261)/2, 418, 265);
    }
	private void blueradioActionPerformed( ActionEvent evt) {
		greenradio.setSelected(false);
		redradio.setSelected(false);
		lightradio.setSelected(false);
		if(blueradio.isSelected()==true)
		{
			draw=pro.getBluelevel();
			color=Color.blue;
			canvas.repaint();
		}

    }
    private void redradioActionPerformed( ActionEvent evt) {
		greenradio.setSelected(false);
		blueradio.setSelected(false);
		lightradio.setSelected(false);
		if(redradio.isSelected()==true)
		{
			draw=pro.getRedlevel();
			color=Color.red;
			canvas.repaint();
		}

    }
    private void greenradioActionPerformed( ActionEvent evt) {
		blueradio.setSelected(false);
		redradio.setSelected(false);
		lightradio.setSelected(false);
		if(greenradio.isSelected()==true)
		{
			draw=pro.getGreenlevel();
			color=Color.green;
			canvas.repaint();
		}

    }
    private void lightradioActionPerformed( ActionEvent evt) {
		greenradio.setSelected(false);
		redradio.setSelected(false);
		blueradio.setSelected(false);
		if(lightradio.isSelected()==true)
		{
			draw=pro.getGraylevel();
			color=Color.darkGray;
			canvas.repaint();
		}
    }
    private  JRadioButton blueradio;
    private  Canva canvas;
    private  JRadioButton greenradio;
    private  JPanel jPanel2;
    private  JRadioButton lightradio;
    private  JRadioButton redradio;
    private  JPanel jPanel3;
    private  JLabel jLabel1;
    private  JTextField jTextField1;
    private  JLabel jLabel2;
    private  JTextField jTextField2;    
    
}
class Canva extends JPanel 
{
		Canva(){
			setBackground(SystemColor.controlLtHighlight);
			setBorder(new MatteBorder(new Insets(2, 2, 2, 2), new Color(51, 51, 255)));
			setBounds(10, 10, 270, 210);
		}
		public void paint(Graphics g)
		{
			super.paint(g);
			int h=54,v=42;
			g.setColor(Color.lightGray);
			for(int i=0;i<42;i++)
			{

				g.drawLine(0,i*5,270,i*5);
			}
			for(int i=0;i<54;i++)
			{
				g.drawLine(i*5,0,i*5,210);
			}
			g.setColor(Color.magenta);
			g.drawLine(255,200,255,20);
			g.setColor(Color.black);
			g.drawString("255",245,210);
		}
};