package com.robert;
import javax.swing.*;
import java.awt.*;
/**
* Created by IntelliJ IDEA.
* User: Administrator
* Date: 11-11-12
* Time: 下午9:57
* To change this template use File | Settings | File Templates.
*/
public class ListRenderingTest {
public static void main(String[] args)
{
EventQueue.invokeLater(new Runnable() {
public void run() {
JFrame frame = new ListRenderingFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
}
});
}
}
package com.robert;
import javax.swing.*;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import java.awt.*;
import java.util.ArrayList;
/**
* Created by IntelliJ IDEA.
* User: Administrator
* Date: 11-11-12
* Time: 下午9:59
* To change this template use File | Settings | File Templates.
*/
public class ListRenderingFrame extends JFrame {
private static final int DEFAULT_WIDHT = 400;
private static final int DEFAULT_HEIGHT = 300;
private JTextArea text;
private JList fontList;
public ListRenderingFrame()
{
setTitle("ListRenderingTest");
setSize(DEFAULT_WIDHT,DEFAULT_HEIGHT);
ArrayList<Font> fonts = new ArrayList<Font>();
final int SIZE = 24;
fonts.add(new Font("Serif", Font.PLAIN, SIZE));
fonts.add(new Font("SansSerif", Font.PLAIN, SIZE));
fonts.add(new Font("Monospaced", Font.PLAIN, SIZE));
fonts.add(new Font("Dialog", Font.PLAIN, SIZE));
fonts.add(new Font("DialogInput", Font.PLAIN, SIZE));
fontList = new JList(fonts.toArray());
fontList.setVisibleRowCount(4);
fontList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
fontList.setCellRenderer(new FontCellRenderer());
JScrollPane scrollPane = new JScrollPane(fontList);
JPanel p = new JPanel();
p.add(scrollPane);
fontList.addListSelectionListener(new ListSelectionListener() {
public void valueChanged(ListSelectionEvent e) {
Font font = (Font)fontList.getSelectedValue();
text.setFont(font);
}
});
Container contentPane = getContentPane();
contentPane.add(p, BorderLayout.SOUTH);
text = new JTextArea("The quick brown fox jumps over the lazy dog");
text.setFont((Font)fonts.get(0));
text.setLineWrap(true);
text.setWrapStyleWord(true);
contentPane.add(text, BorderLayout.CENTER);
}
}
package com.robert;
import com.sun.corba.se.impl.orbutil.graph.Graph;
import sun.java2d.loops.DrawGlyphListAA;
import javax.swing.*;
import java.awt.*;
/**
* Created by IntelliJ IDEA.
* User: Administrator
* Date: 11-11-12
* Time: 下午10:22
* To change this template use File | Settings | File Templates.
*/
class FontCellRenderer extends JComponent implements ListCellRenderer
{
private Font font;
private Color background;
private Color foreground;
public Component getListCellRendererComponent(JList list,Object value,int index,
boolean isSelected, boolean cellHasFocus)
{
font = (Font)value;
background = isSelected ? list.getSelectionBackground() : list.getBackground();
foreground = isSelected ? list.getSelectionForeground() : list.getForeground();
return this;
}
public void paintComponent(Graphics g)
{
String text = font.getFamily();
FontMetrics fm = g.getFontMetrics(font);
g.setColor(background);
g.fillRect(0, 0, getWidth(), getHeight());
g.setColor(foreground);
g.setFont(font);
g.drawString(text, 0, fm.getAscent());
}
public Dimension getPreferredSize()
{
String text = font.getFamily();
Graphics g = getGraphics();
FontMetrics fm = g.getFontMetrics(font);
return new Dimension(fm.stringWidth(text), fm.getHeight());
}
}