关于图像滚动后，显示不正常的问题。各位大虾帮帮忙。我会急死了。在线等待。谢谢

兄弟，我县大概说一下，代码有点乱。我现整理一下。
我要在一幅图上放一些图。我是用在JLabel方JLabel来实现的。如果不改变缺省的布局管理器的话。正常。但我的小的JLabel在初始化的时候就不能再大的JLabel上。我是好改成null了。可这时却要出问题。我服了

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.image.*;class myIcon implements Icon//实现图标
{
//大框图
private double scale;
        private int startX=3;
private int startY=3;
private double width;
private double height;
//网络故障二层
private double nWidth;
private double nHeight;
private int nStartx;
private int nStarty;
//电力故障三层
private double eWidth;
private double eHeight;
private int eStartx;
private int eStarty;
//顶层
//硬件故障一列
private double hWidth;
private double hHeight;
private int hStartx;
private int hStarty;
//软件故障二列
private double sWidth;
private double sHeight;
private int sStartx;
private int sStarty;
//更新故障二列
private double uWidth;
private double uHeight;
private int uStartx;
private int uStarty;

//和个模块的颜色
private Color  OK_COLOR=Color.green;
private Color  NULL_COLOR=Color.lightGray;
private Color  eColor= Color.black;
private Color  nColor=Color.red;
private Color  hColor=Color.orange;
private Color  sColor=Color.white;
private Color  uColor=Color.pink;

myIcon(double a)
{
        //大框图
scale=a;
width=100.0/scale;
height=200.0/scale;
//网络故障二层
nWidth=width;
nHeight=height/3;
nStartx=startX;
nStarty=startY+(int)nHeight;
//电力故障三层
eWidth=width;
eHeight=height-height*2/3+2;
eStartx=startX;
eStarty=nStarty+(int)nHeight;
//顶层//硬件故障一列
hWidth=width/3;
hHeight=nHeight;
hStartx=startX;
hStarty=startY;
//软件故障二列
sWidth=width/3;
sHeight=nHeight;
sStartx=hStartx+(int)hWidth;
sStarty=startY;
//更新故障二列
uWidth=width-hWidth-sWidth+2;
uHeight=nHeight;
uStartx=sStartx+(int)hWidth;
uStarty=startY;
}
public int getIconWidth(){return (int)width+3;}
public int getIconHeight(){return (int)height+3;}
public void paintIcon(Component c,Graphics g,int x,int y)
{
         g.drawRect(startX,startY,(int)width,(int)height);

         g.setColor(nColor);
         g.fillRect(nStartx,nStarty,(int)nWidth,(int)nHeight);

         g.setColor(eColor);
         g.fillRect(eStartx,eStarty,(int)eWidth,(int)eHeight);         g.setColor(hColor);
         g.fillRect(hStartx,hStarty,(int)hWidth,(int)hHeight);

         g.setColor(sColor);
         g.fillRect(sStartx,sStarty,(int)sWidth,(int)sHeight);

         g.setColor(uColor);
         g.fillRect(uStartx,uStarty,(int)uWidth,(int)uHeight);

g.draw3DRect(startX-1,startY-1,(int)width+1,(int)height+1,true);
g.draw3DRect(startX-2,startY-2,(int)width+2,(int)height+2,true);
g.draw3DRect(startX-3,startY-3,(int)width+3,(int)height+3,true);
}
}
class myPanel extends JPanel
{
private Graphics g;
private ImageIcon icon;
private Toolkit tool=Toolkit.getDefaultToolkit();
private myIcon myicon=new myIcon(2.0);

private Point first,last;
int i=0;
private int width,height;

JLabel mmm//小的
       ,lll;//大的
myPanel()
{
setLayout(null);
icon=new ImageIcon("D8-2.JPG");
mmm=new JLabel(myicon);
lll=new JLabel(icon);
lll.setBounds(0,0,icon.getIconWidth(),icon.getIconHeight());
mmm.setBounds(0,0,myicon.getIconWidth(),myicon.getIconHeight());
add(mmm);
add(lll);
width=icon.getIconWidth();
height=icon.getIconHeight();
setSize(width,height);
mmm.addMouseListener(new MouseAdapter()
{
public void mousePressed(MouseEvent e)
{
first=e.getPoint();
System.out.println("first="+first);
}
public void mouseReleased(MouseEvent e)
{
} }
);

//实现小图标的拖动
mmm.addMouseMotionListener(new MouseMotionAdapter()
{
public void mouseDragged(MouseEvent e)
{
JLabel ppp=(JLabel)e.getSource();
last=e.getPoint();
System.out.println("last="+last);
ppp.setLocation(ppp.getLocation().x+last.x-first.x,ppp.getLocation().y+last.y-first.y);
}
}
);

}
public int getWidth(){return width;}
public int getHeight(){return height;}
}
class myView extends JViewport implements AdjustmentListener
{
//实现滚屏
public void adjustmentValueChanged(AdjustmentEvent e)
{
setViewPosition(new Point(getViewPosition().x,e.getValue()));
}
}
public class temp1 extends JFrame
{
public
temp1()
{
addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e){System.exit(0);}
}
);
        }
public static void main(String args[])
{
Toolkit tool=Toolkit.getDefaultToolkit();
        Dimension screen=tool.getScreenSize();
temp1 myform=new temp1();
myPanel my=new myPanel();
myView view=new myView();
view.setView(my);

JScrollBar ver=new JScrollBar(JScrollBar.VERTICAL,0,2,0,my.getHeight()-(int)screen.getHeight());
JScrollBar hor=new JScrollBar(JScrollBar.HORIZONTAL,0,2,0,my.getWidth()-(int)screen.getWidth());
ver.addAdjustmentListener(view);
hor.addAdjustmentListener(view);
myform.getContentPane().add(view,"Center");
myform.getContentPane().add(ver,"East");
myform.getContentPane().add(hor,"South");
myform.show();
}
}

不是。在“icon=new ImageIcon("D8-2.JPG");”一句。要有一张大于屏幕尺寸的图。

改成如下就可以了：
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.image.*;class myIcon implements Icon//实现图标
{
        //大框图
        private double scale;
        private int startX=3;
        private int startY=3;
        private double width;
        private double height;
        //网络故障二层
        private double nWidth;
        private double nHeight;
        private int nStartx;
        private int nStarty;
        //电力故障三层
        private double eWidth;
        private double eHeight;
        private int eStartx;
        private int eStarty;
        //顶层
        //硬件故障一列
        private double hWidth;
        private double hHeight;
        private int hStartx;
        private int hStarty;
        //软件故障二列
        private double sWidth;
        private double sHeight;
        private int sStartx;
        private int sStarty;
        //更新故障二列
        private double uWidth;
        private double uHeight;
        private int uStartx;
        private int uStarty;        //和个模块的颜色
        private Color  OK_COLOR=Color.green;
        private Color  NULL_COLOR=Color.lightGray;
        private Color  eColor= Color.black;
        private Color  nColor=Color.red;
        private Color  hColor=Color.orange;
        private Color  sColor=Color.white;
        private Color  uColor=Color.pink;        myIcon(double a)
        {
                //大框图
                scale=a;
                width=100.0/scale;
                height=200.0/scale;
                //网络故障二层
                nWidth=width;
                nHeight=height/3;
                nStartx=startX;
                nStarty=startY+(int)nHeight;
                //电力故障三层
                eWidth=width;
                eHeight=height-height*2/3+2;
                eStartx=startX;
                eStarty=nStarty+(int)nHeight;
                //顶层//硬件故障一列
                hWidth=width/3;
                hHeight=nHeight;
                hStartx=startX;
                hStarty=startY;
                //软件故障二列
                sWidth=width/3;
                sHeight=nHeight;
                sStartx=hStartx+(int)hWidth;
                sStarty=startY;
                //更新故障二列
                uWidth=width-hWidth-sWidth+2;
                uHeight=nHeight;
                uStartx=sStartx+(int)hWidth;
                uStarty=startY;
        }
        public int getIconWidth(){return (int)width+3;}
        public int getIconHeight(){return (int)height+3;}
        public void paintIcon(Component c,Graphics g,int x,int y)
        {
                g.drawRect(startX,startY,(int)width,(int)height);                g.setColor(nColor);
                g.fillRect(nStartx,nStarty,(int)nWidth,(int)nHeight);                g.setColor(eColor);
                g.fillRect(eStartx,eStarty,(int)eWidth,(int)eHeight);                g.setColor(hColor);
                g.fillRect(hStartx,hStarty,(int)hWidth,(int)hHeight);                g.setColor(sColor);
                g.fillRect(sStartx,sStarty,(int)sWidth,(int)sHeight);                g.setColor(uColor);
                g.fillRect(uStartx,uStarty,(int)uWidth,(int)uHeight);                g.draw3DRect(startX-1,startY-1,(int)width+1,(int)height+1,true);
                g.draw3DRect(startX-2,startY-2,(int)width+2,(int)height+2,true);
                g.draw3DRect(startX-3,startY-3,(int)width+3,(int)height+3,true);
        }
}
class myPanel extends JPanel
{
        private Graphics g;
        private ImageIcon icon;
        private Toolkit tool=Toolkit.getDefaultToolkit();
        private myIcon myicon=new myIcon(2.0);        private Point first,last;
        int i=0;
        private int width,height;        JLabel mmm//小的
               ,lll;//大的
        myPanel()
        {
                setLayout(null);
                icon=new ImageIcon("d.jpg");
                mmm=new JLabel(myicon);
                lll=new JLabel(icon);
                lll.setBounds(0,0,icon.getIconWidth(),icon.getIconHeight());
                mmm.setBounds(0,0,myicon.getIconWidth(),myicon.getIconHeight());
                add(mmm);
                add(lll);
                width=icon.getIconWidth();
                height=icon.getIconHeight();
                setSize(width,height);
                mmm.addMouseListener(new MouseAdapter()
                {
                        public void mousePressed(MouseEvent e)
                        {
                                first=e.getPoint();
                                System.out.println("first="+first);
                        }
                        public void mouseReleased(MouseEvent e)
                        {
                        }                }
                );                //实现小图标的拖动
                mmm.addMouseMotionListener(new MouseMotionAdapter()
                {
                        public void mouseDragged(MouseEvent e)
                        {
                                JLabel ppp=(JLabel)e.getSource();
                                last=e.getPoint();
                                System.out.println("last="+last);
                                ppp.setLocation(ppp.getLocation().x+last.x-first.x,ppp.getLocation().y+last.y-first.y);
                        }
                }
                );        }
        public int getWidth(){return width;}
        public int getHeight(){return height;}
}
class myView extends JViewport implements AdjustmentListener
{
        //实现滚屏
        public void adjustmentValueChanged(AdjustmentEvent e)
        {
                setViewPosition(new Point(getViewPosition().x,e.getValue()));
                ((JPanel)super.getParent()).repaint();
        }
}
public class temp1 extends JFrame
{
        public temp1()
        {
        addWindowListener(new WindowAdapter()
        {
                public void windowClosing(WindowEvent e){System.exit(0);}
        }
        );
        }
        public static void main(String args[]) {
                Toolkit tool=Toolkit.getDefaultToolkit();
                Dimension screen=tool.getScreenSize();
                temp1 myform=new temp1();
                myPanel my=new myPanel();
                myView view=new myView();
                view.setView(my);
                JScrollBar ver=new JScrollBar();
                JScrollBar hor=new JScrollBar();
                ver.addAdjustmentListener(view);
                hor.addAdjustmentListener(view);
                myform.setSize(800,600);
                myform.setLocation(myform.getToolkit().getScreenSize().width/2-myform.getWidth()/2,myform.getToolkit().getScreenSize().height/2-myform.getHeight()/2);
                myform.getContentPane().add(view,"Center");
                myform.getContentPane().add(ver,"East");
                myform.getContentPane().add(hor,"South");
                myform.show();
        }
}

不好意思，我把图片改成里d.jpg，你把这个改回原来的就可以了

发现你的代码没有分别处理横竖的JScrollBar，改了一下：
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.awt.image.*;class myIcon implements Icon//实现图标
{
        //大框图
        private double scale;
        private int startX=3;
        private int startY=3;
        private double width;
        private double height;
        //网络故障二层
        private double nWidth;
        private double nHeight;
        private int nStartx;
        private int nStarty;
        //电力故障三层
        private double eWidth;
        private double eHeight;
        private int eStartx;
        private int eStarty;
        //顶层
        //硬件故障一列
        private double hWidth;
        private double hHeight;
        private int hStartx;
        private int hStarty;
        //软件故障二列
        private double sWidth;
        private double sHeight;
        private int sStartx;
        private int sStarty;
        //更新故障二列
        private double uWidth;
        private double uHeight;
        private int uStartx;
        private int uStarty;        //和个模块的颜色
        private Color  OK_COLOR=Color.green;
        private Color  NULL_COLOR=Color.lightGray;
        private Color  eColor= Color.black;
        private Color  nColor=Color.red;
        private Color  hColor=Color.orange;
        private Color  sColor=Color.white;
        private Color  uColor=Color.pink;        myIcon(double a)
        {
                //大框图
                scale=a;
                width=100.0/scale;
                height=200.0/scale;
                //网络故障二层
                nWidth=width;
                nHeight=height/3;
                nStartx=startX;
                nStarty=startY+(int)nHeight;
                //电力故障三层
                eWidth=width;
                eHeight=height-height*2/3+2;
                eStartx=startX;
                eStarty=nStarty+(int)nHeight;
                //顶层//硬件故障一列
                hWidth=width/3;
                hHeight=nHeight;
                hStartx=startX;
                hStarty=startY;
                //软件故障二列
                sWidth=width/3;
                sHeight=nHeight;
                sStartx=hStartx+(int)hWidth;
                sStarty=startY;
                //更新故障二列
                uWidth=width-hWidth-sWidth+2;
                uHeight=nHeight;
                uStartx=sStartx+(int)hWidth;
                uStarty=startY;
        }
        public int getIconWidth(){return (int)width+3;}
        public int getIconHeight(){return (int)height+3;}
        public void paintIcon(Component c,Graphics g,int x,int y)
        {
                g.drawRect(startX,startY,(int)width,(int)height);                g.setColor(nColor);
                g.fillRect(nStartx,nStarty,(int)nWidth,(int)nHeight);                g.setColor(eColor);
                g.fillRect(eStartx,eStarty,(int)eWidth,(int)eHeight);                g.setColor(hColor);
                g.fillRect(hStartx,hStarty,(int)hWidth,(int)hHeight);                g.setColor(sColor);
                g.fillRect(sStartx,sStarty,(int)sWidth,(int)sHeight);                g.setColor(uColor);
                g.fillRect(uStartx,uStarty,(int)uWidth,(int)uHeight);                g.draw3DRect(startX-1,startY-1,(int)width+1,(int)height+1,true);
                g.draw3DRect(startX-2,startY-2,(int)width+2,(int)height+2,true);
                g.draw3DRect(startX-3,startY-3,(int)width+3,(int)height+3,true);
        }
}
class myPanel extends JPanel
{
        private Graphics g;
        private ImageIcon icon;
        private Toolkit tool=Toolkit.getDefaultToolkit();
        private myIcon myicon=new myIcon(2.0);        private Point first,last;
        int i=0;
        private int width,height;        JLabel mmm//小的
               ,lll;//大的
        myPanel()
        {
                setLayout(null);
                icon=new ImageIcon("d.jpg");
                mmm=new JLabel(myicon);
                lll=new JLabel(icon);
                lll.setBounds(0,0,icon.getIconWidth(),icon.getIconHeight());
                mmm.setBounds(0,0,myicon.getIconWidth(),myicon.getIconHeight());
                add(mmm);
                add(lll);
                width=icon.getIconWidth();
                height=icon.getIconHeight();
                setSize(width,height);
                mmm.addMouseListener(new MouseAdapter()
                {
                        public void mousePressed(MouseEvent e)
                        {
                                first=e.getPoint();
                                System.out.println("first="+first);
                        }
                        public void mouseReleased(MouseEvent e)
                        {
                        }                }
                );                //实现小图标的拖动
                mmm.addMouseMotionListener(new MouseMotionAdapter()
                {
                        public void mouseDragged(MouseEvent e)
                        {
                                JLabel ppp=(JLabel)e.getSource();
                                last=e.getPoint();
                                System.out.println("last="+last);
                                ppp.setLocation(ppp.getLocation().x+last.x-first.x,ppp.getLocation().y+last.y-first.y);
                        }
                }
                );        }
        public int getWidth(){return width;}
        public int getHeight(){return height;}
}
class myView extends JViewport implements AdjustmentListener
{
        //实现滚屏
        public void adjustmentValueChanged(AdjustmentEvent e)
        {
          if(((JScrollBar)e.getSource()).getName().equals("a"))
            setViewPosition(new Point(getViewPosition().x,e.getValue()));
          else if(((JScrollBar)e.getSource()).getName().equals("b"))
            setViewPosition(new Point(e.getValue(),getViewPosition().y));
          ((JPanel)super.getParent()).repaint();
        }
}
public class temp1 extends JFrame
{
        public temp1()
        {
        addWindowListener(new WindowAdapter()
        {
                public void windowClosing(WindowEvent e){System.exit(0);}
        }
        );
        }
        public static void main(String args[]) {
                Toolkit tool=Toolkit.getDefaultToolkit();
                Dimension screen=tool.getScreenSize();
                temp1 myform=new temp1();
                myPanel my=new myPanel();
                myView view=new myView();
                view.setView(my);
                JScrollBar ver=new JScrollBar();
                JScrollBar hor=new JScrollBar();
                hor.setOrientation(JScrollBar.HORIZONTAL);
                ver.addAdjustmentListener(view);
                hor.addAdjustmentListener(view);
                ver.setName("a");
                hor.setName("b");
                myform.setSize(800,600);
                myform.setLocation(myform.getToolkit().getScreenSize().width/2-myform.getWidth()/2,myform.getToolkit().getScreenSize().height/2-myform.getHeight()/2);
                myform.getContentPane().add(view,"Center");
                myform.getContentPane().add(ver,"East");
                myform.getContentPane().add(hor,"South");
                myform.show();
        }
}

beyond_xiruo：
还有点问题。不知beyond_xiruo拖动我的小图标没有。为什么只能滚动之前的视口里拖动呢？？如果滚动条向下滚动了。我的小图标却不能再向下拖了。这是我的小JLabel连鼠标消息都接受不到了

以上的程序，我把图片放在，和temp1的目录下
用jcreator编译没问题,可是执行什么也没有，除了一片白色，怎么回事啊
我的jcreator问题么？

yixia(一侠):在dos窗口执行就没问题。
结分了

调试易

关于图像滚动后，显示不正常的问题。各位大虾帮帮忙。我会急死了。在线等待。谢谢

解决方案 »