testjtextpane.java

TextPane的例子

package test.swing;
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 <如转载请保留作者和出处>
* @blog http://blog.csdn.net/mq612
*/
public class TestJTextPane extends JFrame {
  private static final long serialVersionUID = -2397593626990759111L;
  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 TestJTextPane() {
    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) {
            text.setText("");
          }
        });
    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
  }
  /**
   * 将文本插入JTextPane
   *
   * @param attrib
   */
  private void insert(FontAttrib attrib) {
    try { // 插入文本
      doc.insertString(doc.getLength(), attrib.getText() + "\n", attrib.getAttrSet());
    } catch (BadLocationException e) {
      e.printStackTrace();
    }
  }
  /**
   * 获取所需要的文字设置
   *
   * @return FontAttrib
   */
  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 TestJTextPane();
  }
  /**
   * 字体的属性类
   */
  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
    /**
     * 一个空的构造（可当做换行使用）
     */
    public FontAttrib() {
    }
    /**
     * 返回属性集
     *
     * @return
     */
    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;
    }
  }
}