高分求救，不够再加，老板要做个“标尺“，要求和word的一样

JScrollPane本身就有这个属性可以设置的。

试试下面这段代码：
  jSlider1.setMaximum(20);
    jSlider1.setPaintLabels(true);
    Hashtable  h = new Hashtable(21);
    for(int i=0;i<=20;i++)
    {
     h.put(new Integer(i), new JLabel("<html>|<br>"+i+"</html>"));
    }
    //jSlider1.setLabelTable(  jSlider1.createStandardLabels(10));
    jSlider1.setLabelTable( h);如果只要数字，使用jSlider1.setLabelTable(  jSlider1.createStandardLabels(10));否则，使用jSlider1.setLabelTable( h);并把Jlabel的内容该为你想要的图形或文字

前两个类：
//// ScrollDemo.java //////////////////////////////
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
/*
* ScrollDemo.java requires:images/youngdad.jpeg
*/
public class ScrollDemo extends JPanel
                        implements ItemListener
{
    private Rule columnView;
    private Rule rowView;
    private JToggleButton isMetric;
    private ScrollablePicture picture;
    public ScrollDemo()
    {
        ImageIcon david = createImageIcon("images/youngdad.jpeg");
        columnView = new Rule(Rule.HORIZONTAL, true);
        rowView = new Rule(Rule.VERTICAL, true);
        if (david != null)
        {
            columnView.setPreferredWidth(david.getIconWidth());
            rowView.setPreferredHeight(david.getIconHeight());
        }
        else{columnView.setPreferredWidth(320);rowView.setPreferredHeight(480);}        JPanel buttonCorner = new JPanel();
        isMetric = new JToggleButton("cm", true);
        isMetric.setFont(new Font("SansSerif", Font.PLAIN, 11));
        isMetric.setMargin(new Insets(2,2,2,2));
        isMetric.addItemListener(this);
        buttonCorner.add(isMetric);         picture = new ScrollablePicture(david, columnView.getIncrement());
        JScrollPane pictureScrollPane = new JScrollPane(picture);
        pictureScrollPane.setPreferredSize(new Dimension(300, 250));
        pictureScrollPane.setViewportBorder(BorderFactory.createLineBorder(Color.black));
        pictureScrollPane.setColumnHeaderView(columnView);
        pictureScrollPane.setRowHeaderView(rowView);        pictureScrollPane.setCorner(JScrollPane.UPPER_LEFT_CORNER,buttonCorner);
        pictureScrollPane.setCorner(JScrollPane.LOWER_LEFT_CORNER,new Corner());
        pictureScrollPane.setCorner(JScrollPane.UPPER_RIGHT_CORNER,new Corner());        setLayout(new BoxLayout(this, BoxLayout.X_AXIS));
        add(pictureScrollPane);
        setBorder(BorderFactory.createEmptyBorder(20,20,20,20));
    }    public void itemStateChanged(ItemEvent e)
    {
        if (e.getStateChange() == ItemEvent.SELECTED)
        {rowView.setIsMetric(true);columnView.setIsMetric(true);}
        else {rowView.setIsMetric(false);columnView.setIsMetric(false);}
        picture.setMaxUnitIncrement(rowView.getIncrement());
    }
    protected static ImageIcon createImageIcon(String path)
    {
        java.net.URL imgURL = ScrollDemo.class.getResource(path);
        if (imgURL != null) return new ImageIcon(imgURL);
        else
        {
            System.err.println("Couldn't find file: " + path);
            return null;
        }
    }
    public static void main(String[] args)
    {
        JFrame.setDefaultLookAndFeelDecorated(true);
        JFrame frame = new JFrame("ScrollDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setContentPane(new ScrollDemo());
        frame.pack();
        frame.setVisible(true);
    }
}
class ScrollablePicture extends JLabel    implements Scrollable
{
    private int maxUnitIncrement = 1;
    private boolean missingPicture = false;
    public ScrollablePicture(ImageIcon i, int m)
    {
        super(i);
        if (i == null)
        {
            missingPicture = true;
            setText("No picture found.");
            setHorizontalAlignment(CENTER);
            setOpaque(true);
            setBackground(Color.white);
        }
        maxUnitIncrement = m;
    }
    public Dimension getPreferredSize()
    {
        if (missingPicture) return new Dimension(320, 480);
        else  return super.getPreferredSize();
    }
    public Dimension getPreferredScrollableViewportSize()
    {
        return getPreferredSize();
    }
    public int getScrollableUnitIncrement(Rectangle visibleRect,int orientation,int direction)
    {
        int currentPosition = 0;
        if (orientation == SwingConstants.HORIZONTAL)currentPosition = visibleRect.x;
        else currentPosition = visibleRect.y;        if (direction < 0)
        {
            int newPosition=currentPosition-(currentPosition/maxUnitIncrement)*maxUnitIncrement;
            return (newPosition == 0) ? maxUnitIncrement : newPosition;
        } else
        {
            return ((currentPosition / maxUnitIncrement) + 1) *
                   maxUnitIncrement - currentPosition;
        }
    }
    public int getScrollableBlockIncrement(Rectangle visibleRect,int orientation,int direction)
    {
        if (orientation == SwingConstants.HORIZONTAL) return visibleRect.width - maxUnitIncrement;
        else return visibleRect.height - maxUnitIncrement;
    }
    public boolean getScrollableTracksViewportWidth()  {    return false;    }
    public boolean getScrollableTracksViewportHeight() {    return false;    }
    public void setMaxUnitIncrement(int pixels)        {maxUnitIncrement = pixels;   }
}

后两个类：
class Rule extends JComponent
{
    public static final int INCH = Toolkit.getDefaultToolkit().getScreenResolution();
    public static final int HORIZONTAL = 0;
    public static final int VERTICAL = 1;
    public static final int SIZE = 35;
    public int orientation;
    public boolean isMetric;
    private int increment;
    private int units;
    public Rule(int orientation, boolean m)
    {
        orientation = orientation;
        isMetric = m;
        setIncrementAndUnits();
    }
    public void setIsMetric(boolean isMetric)
    {
        this.isMetric = isMetric;
        setIncrementAndUnits();
        repaint();
    }
    private void setIncrementAndUnits()
    {
        if (isMetric){units = (int)((double)INCH / (double)2.54);increment = units;}
        else{units = INCH;increment = units / 2;}
    }
    public boolean isMetric() { return this.isMetric; }
    public int getIncrement() { return increment; }
    public void setPreferredHeight(int ph){setPreferredSize(new Dimension(SIZE, ph));}
    public void setPreferredWidth(int pw){setPreferredSize(new Dimension(pw, SIZE));}
    public void paintComponent(Graphics g)
    {
        Rectangle drawHere = g.getClipBounds();
        g.setColor(new Color(230, 163, 4));
        g.fillRect(drawHere.x, drawHere.y, drawHere.width, drawHere.height);
        g.setFont(new Font("SansSerif", Font.PLAIN, 10));
        g.setColor(Color.black);        int end = 0,start = 0,tickLength = 0;
        String text = null;
        if (orientation == HORIZONTAL)
        {
            start = (drawHere.x / increment) * increment;
            end = (((drawHere.x + drawHere.width) / increment) + 1)*increment;
        }
        else
        {
            start = (drawHere.y / increment) * increment;
            end = (((drawHere.y + drawHere.height) / increment) + 1)*increment;
        }
        if (start == 0)
        {
            text = Integer.toString(0) + (isMetric ? " cm" : " in");
            tickLength = 10;
            if (orientation == HORIZONTAL)
            {
                g.drawLine(0, SIZE-1, 0, SIZE-tickLength-1);
                g.drawString(text, 2, 21);
            }
            else
            {
                g.drawLine(SIZE-1, 0, SIZE-tickLength-1, 0);
                g.drawString(text, 9, 10);
            }
            text = null;
            start = increment;
        }
        for (int i = start; i < end; i += increment)
        {
            if (i % units == 0)  {tickLength = 10;text = Integer.toString(i/units);}
            else {tickLength = 7; text = null;}
            if (tickLength != 0)
            {
                if (orientation == HORIZONTAL)
                {
                    g.drawLine(i, SIZE-1, i, SIZE-tickLength-1);
                    if (text != null) g.drawString(text, i-3, 21);
                }
                else
                {
                    g.drawLine(SIZE-1, i, SIZE-tickLength-1, i);
                    if (text != null) g.drawString(text, 9, i+3);
                }
            }
        }
    }
}
class Corner extends JComponent
{
    public void paintComponent(Graphics g)
    {
        g.setColor(new Color(230, 163, 4));
        g.fillRect(0, 0, getWidth(), getHeight());
    }
}

：o ,发完贴子，自己回家画去了，结果还真画出来了，和word的一样，嘿嘿。
这么多朋友关注，谢了。非常感谢，结贴。

调试易

高分求救，不够再加，老板要做个“标尺“，要求和word的一样

解决方案 »