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ImageIcon2.rar(免费下载)[2 次下载]import javax.swing.*; |
import java.awt.*; |
import java.awt.event.*; |
import javax.swing.event.*; |
import java.util.List; |
import javax.swing.JList; |
import javax.swing.border.*; |
import java.util.Vector; |
public class ListRenderingTest |
{ |
private JFrame mainWin = new JFrame("好友列表"); |
private String[] friends = new String[]{ |
"孙悟空","弗利萨","皮克大魔王","克林","贝吉塔" |
}; |
//定义一个JList对象 |
private JList friendsList = new JList(friends); |
public void init(){ |
//设置该JList使用ImageCellRenderer作为列表项绘制器 |
friendsList.setCellRenderer(new ImageCellRenderer()); |
mainWin.add(new JScrollPane(friendsList)); |
mainWin.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); |
mainWin.pack(); |
mainWin.setVisible(true); |
} |
public static void main(String[] args){ |
new ListRenderingTest().init(); |
} |
} |
// |
class ImageCellRenderer extends JPanel implements ListCellRenderer |
{ |
private ImageIcon icon ; |
private String name; |
//定义绘制单元格时背景色 |
private Color background; |
//前景色 |
private Color foreground; |
public Component getListCellRendererComponent(JList list, |
Object value,int index,boolean isSelected,boolean cellHasFocus){ |
icon = new ImageIcon("ImageIcon2/"+value+".gif"); |
name = value.toString(); |
background = isSelected ? list.getSelectionBackground() : list.getBackground(); |
foreground = isSelected ? list.getSelectionForeground() : list.getForeground(); |
//返回该JPanel对象作为列表项绘制器 |
return this; |
} |
//重写paintComponent()方法，改变JPanel的外观 |
public void paintComponent(Graphics g){ |
int imageWidth = icon.getImage().getWidth(null); |
int imageHeight = icon.getImage().getHeight(null); |
g.setColor(background); |
g.fillRect(0,0,getWidth(),getHeight()); |
g.setColor(foreground); |
//绘制好友图标 |
g.drawImage(icon.getImage(),getWidth()/2 - imageWidth/2,10,null); |
g.setFont(new Font("SansSerif",Font.BOLD,18)); |
//绘制好友用户名 |
g.drawString(name,getWidth()/2 - name.length()*10,imageHeight+30); |
} |
//通过该方法来设置该ImageCellRendderer的最佳大小 |
public Dimension getPreferredSize(){ |
return new Dimension(60,80); |
} |
} |
ImageIcon2.rar(免费下载)[2 次下载]
