一个java问题 急··· 希望高手尽快解决 要交作业···

一个java问题 急··· 希望高手尽快解决 要交作业···
用JavaApplication编写一个模拟的文本编辑器.给文本
编辑器增设字体字号的功能.

转载：
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.JTextPane;
import javax.swing.UIManager;
import javax.swing.text.BadLocationException;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledDocument;
/**
* JTextPane的例子,模拟聊天客户端,演示了为每段文字设置字体、字号、样式、颜色、背景色和插入图片功能
* @author 五斗米
* @blog http://blog.csdn.net/mq612
*/
public class JTextPane3 extends JFrame {
private JScrollPane scrollPane = null; // 滚动
private JTextPane text = null; // 不用说了,如果不认识的话就没必要往后看了
private Box box = null; // 放输入组件的容器
private JButton b_insert = null, b_remove = null, b_icon = null; // 插入按钮;清除按钮;插入图片按钮
private JTextField addText = null; // 文字输入框
private JComboBox fontName = null, fontSize = null, fontStyle = null, fontColor = null,fontBackColor = null; // 字体名称;字号大小;文字样式;文字颜色;文字背景颜色
private StyledDocument doc = null; // 非常重要插入文字样式就靠它了
public JTextPane3() {
super("JTextPane Test");
try { // 使用Windows的界面风格
UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
} catch (Exception e) {
e.printStackTrace();
}
text = new JTextPane();
text.setEditable(false); // 不可录入
doc = text.getStyledDocument(); // 获得JTextPane的Document
scrollPane = new JScrollPane(text);
addText = new JTextField(18);
String[] str_name = { "宋体", "黑体", "Dialog", "Gulim" };
String[] str_Size = { "12", "14", "18", "22", "30", "40" };
String[] str_Style = { "常规", "斜体", "粗体", "粗斜体" };
String[] str_Color = { "黑色", "红色", "蓝色", "黄色", "绿色" };
String[] str_BackColor = { "无色", "灰色", "淡红", "淡蓝", "淡黄", "淡绿" };
fontName = new JComboBox(str_name); // 字体名称
fontSize = new JComboBox(str_Size); // 字号
fontStyle = new JComboBox(str_Style); // 样式
fontColor = new JComboBox(str_Color); // 颜色
fontBackColor = new JComboBox(str_BackColor); // 背景颜色
b_insert = new JButton("插入"); // 插入
b_remove = new JButton("清空"); // 清除
b_icon = new JButton("图片"); // 插入图片
b_insert.addActionListener(new ActionListener() { // 插入文字的事件
public void actionPerformed(ActionEvent e) {
insert(getFontAttrib());
addText.setText("");
}
});
b_remove.addActionListener(new ActionListener() { // 清除事件
public void actionPerformed(ActionEvent e) {
System.out.println(text.getText());
}
});
b_icon.addActionListener(new ActionListener() { // 插入图片事件
public void actionPerformed(ActionEvent arg0) {
JFileChooser f = new JFileChooser(); // 查找文件
f.showOpenDialog(null);
insertIcon(f.getSelectedFile()); // 插入图片
}
});
box = Box.createVerticalBox(); // 竖结构
Box box_1 = Box.createHorizontalBox(); // 横结构
Box box_2 = Box.createHorizontalBox(); // 横结构
box.add(box_1);
box.add(Box.createVerticalStrut(8)); // 两行的间距
box.add(box_2);
box.setBorder(BorderFactory.createEmptyBorder(8, 8, 8, 8)); // 8个的边距
// 开始将所需组件加入容器
box_1.add(new JLabel("字体：")); // 加入标签
box_1.add(fontName); // 加入组件
box_1.add(Box.createHorizontalStrut(8)); // 间距
box_1.add(new JLabel("样式："));
box_1.add(fontStyle);
box_1.add(Box.createHorizontalStrut(8));
box_1.add(new JLabel("字号："));
box_1.add(fontSize);
box_1.add(Box.createHorizontalStrut(8));
box_1.add(new JLabel("颜色："));
box_1.add(fontColor);
box_1.add(Box.createHorizontalStrut(8));
box_1.add(new JLabel("背景："));
box_1.add(fontBackColor);
box_1.add(Box.createHorizontalStrut(8));
box_1.add(b_icon);
box_2.add(addText);
box_2.add(Box.createHorizontalStrut(8));
box_2.add(b_insert);
box_2.add(Box.createHorizontalStrut(8));
box_2.add(b_remove);
this.getRootPane().setDefaultButton(b_insert); // 默认回车按钮
this.getContentPane().add(scrollPane);
this.getContentPane().add(box, BorderLayout.SOUTH);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setSize(600, 400);
this.setLocationRelativeTo(null);
this.setVisible(true);
addText.requestFocus();
}
/**
* 插入图片
*
* @param icon
*/
private void insertIcon(File file) {
text.setCaretPosition(doc.getLength()); // 设置插入位置
text.insertIcon(new ImageIcon(file.getPath())); // 插入图片
insert(new FontAttrib());// 这样做可以换行
}
private void insert(FontAttrib attrib)
{
try { // 插入文本
doc.insertString(doc.getLength(), attrib.getText() + "\n", attrib.getAttrSet());
} catch (BadLocationException e) { e.printStackTrace(); }
}
private FontAttrib getFontAttrib()
{
FontAttrib att = new FontAttrib();
att.setText(addText.getText());
att.setName((String) fontName.getSelectedItem());
att.setSize(Integer.parseInt((String) fontSize.getSelectedItem()));
String temp_style = (String) fontStyle.getSelectedItem();
if (temp_style.equals("常规"))
{
att.setStyle(FontAttrib.GENERAL);
}
else if (temp_style.equals("粗体"))
{
att.setStyle(FontAttrib.BOLD);
}
else if (temp_style.equals("斜体"))
{
att.setStyle(FontAttrib.ITALIC);
}
else if (temp_style.equals("粗斜体"))
{
att.setStyle(FontAttrib.BOLD_ITALIC);
}
String temp_color = (String) fontColor.getSelectedItem();
if (temp_color.equals("黑色"))
{
att.setColor(new Color(0, 0, 0));
}
else if (temp_color.equals("红色"))
{
att.setColor(new Color(255, 0, 0));
}
else if (temp_color.equals("蓝色"))
{
att.setColor(new Color(0, 0, 255));
}
else if (temp_color.equals("黄色"))
{
att.setColor(new Color(255, 255, 0));
}
else if (temp_color.equals("绿色"))
{
att.setColor(new Color(0, 255, 0));
}
String temp_backColor = (String) fontBackColor.getSelectedItem();
if (!temp_backColor.equals("无色"))
{
if (temp_backColor.equals("灰色"))
{
att.setBackColor(new Color(200, 200, 200));
}
else if (temp_backColor.equals("淡红"))
{
att.setBackColor(new Color(255, 200, 200));
}
else if (temp_backColor.equals("淡蓝"))
{
att.setBackColor(new Color(200, 200, 255));
}
else if (temp_backColor.equals("淡黄"))
{
att.setBackColor(new Color(255, 255, 200));
}
else if (temp_backColor.equals("淡绿"))
{
att.setBackColor(new Color(200, 255, 200));
}
}
return att;
}
public static void main(String args[]) {
new JTextPane3();
}
private class FontAttrib {
public static final int GENERAL = 0; // 常规
public static final int BOLD = 1; // 粗体
public static final int ITALIC = 2; // 斜体
public static final int BOLD_ITALIC = 3; // 粗斜体
private SimpleAttributeSet attrSet = null; // 属性集
private String text = null, name = null; // 要输入的文本和字体名称
private int style = 0, size = 0; // 样式和字号
private Color color = null, backColor = null; // 文字颜色和背景颜色
public FontAttrib() { }
public SimpleAttributeSet getAttrSet() {
attrSet = new SimpleAttributeSet();
if (name != null)
StyleConstants.setFontFamily(attrSet, name);
if (style == FontAttrib.GENERAL)
{
StyleConstants.setBold(attrSet, false);
StyleConstants.setItalic(attrSet, false);
}
else if (style == FontAttrib.BOLD)
{
StyleConstants.setBold(attrSet, true);
StyleConstants.setItalic(attrSet, false);
}
else if (style ==FontAttrib.ITALIC)
{
StyleConstants.setBold(attrSet, false);
StyleConstants.setItalic(attrSet, true);
}
else if (style == FontAttrib.BOLD_ITALIC)
{
StyleConstants.setBold(attrSet, true);
StyleConstants.setItalic(attrSet, true);
}
StyleConstants.setFontSize(attrSet, size);
if (color!= null)
StyleConstants.setForeground(attrSet, color);
if (backColor != null)
StyleConstants.setBackground(attrSet, backColor);
return attrSet;
}
/**
* 设置属性集
*
* @param attrSet
*/
public void setAttrSet(SimpleAttributeSet attrSet) {
this.attrSet = attrSet;
}
/* 后面的注释就不写了,一看就明白 */
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public Color getColor() {
return color;
}
public void setColor(Color color) {
this.color = color;
}
public Color getBackColor() {
return backColor;
}
public void setBackColor(Color backColor) {
this.backColor = backColor;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getSize() {
return size;
}
public void setSize(int size) {
this.size = size;
}
public int getStyle() {
return style;
}
public void setStyle(int style) {
this.style = style;
}
}
}