[Java]關於JTextPane的用法-插入不同的字體-淺談MVC

原創

hifan

2020-02-20 15:11

// 我搜了很多文檔，發現沒有關於JTextPane的用法。

// 在很痛苦的掙扎中慢慢會了JTextPane的用法，同時也對Java的MVC機制有了一點比較淺的理解

// Write by Hifan for Java JTextPane Date:2005 6/9 [關於字體]

import java.awt.*;
import javax.swing.*;
import javax.swing.text.*;

public class JTextPaneTest extends JFrame
{
private static final long serialVersionUID = 1L;

// main function
public static void main(String args[])
{
  JTextPaneTest test = new JTextPaneTest();
  test.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  test.setVisible(true);
}

public JTextPaneTest()
{
  // Initialization
  StyledDocument styledDoc = new DefaultStyledDocument();
  JTextPane textPane = new JTextPane(styledDoc);
  JScrollPane scrollPane = new JScrollPane(textPane);

  // Get Available Font Family Name
  String [] fontNames = GraphicsEnvironment.getLocalGraphicsEnvironment().getAvailableFontFamilyNames();

  // Content
  createStyle("Style01",styledDoc,15,0,1,0,Color.RED,"宋體");
  createStyle("Style02",styledDoc,35,1,1,1,Color.GREEN,"華文琥珀");
  createStyle("Style03",styledDoc,25,1,0,0,Color.BLUE,"隸書");
  createStyle("Style04",styledDoc,18,1,0,0,new Color(0,128,128),fontNames[0]);
  createStyle("Style05",styledDoc,20,0,1,0,new Color(128,128,0),fontNames[7]);
  createStyle("Style06",styledDoc,22,1,0,1,new Color(128,0,128),fontNames[16]);
  createStyle("Style07",styledDoc,18,1,1,0,Color.RED,"華文彩雲");

  insertDoc(styledDoc,"Size=18,Italic,red,font=宋體/n","Style01");
  insertDoc(styledDoc,"其實Java比C++簡單多了/n","Style02");
  insertDoc(styledDoc,"Java中的MVC機制很好/n","Style03");
  insertDoc(styledDoc,"其實Java比C++簡單多了/n","Style07");

  insertDoc(styledDoc,"Java is very good/n","Style04");
  insertDoc(styledDoc,"Java is very good/n","Style05");
  insertDoc(styledDoc,"Java is very good/n","Style06");

  // Layout
  this.getContentPane().setLayout(new BorderLayout());
  this.getContentPane().add(scrollPane,BorderLayout.CENTER);
  this.setSize(new Dimension(500,400));
  this.setTitle("JTextPane Test!");
  this.setLocation(new Point(200,200));
}

public void insertDoc(StyledDocument styledDoc, String content,String currentStyle)
{
  try {
   styledDoc.insertString(styledDoc.getLength(),content,styledDoc.getStyle(currentStyle));
  } catch (BadLocationException e) {
   System.err.println("BadLocationException: " + e);
  }
}

public void createStyle(String style,StyledDocument doc,int size,int bold,int italic,int underline,Color color,String fontName)
{
  Style sys = StyleContext.getDefaultStyleContext().getStyle(StyleContext.DEFAULT_STYLE);
  try { doc.removeStyle(style); } catch(Exception e) {} //先刪除這種Style,假使他存在

  Style s = doc.addStyle(style,sys); // 加入
  StyleConstants.setFontSize(s,size); // 大小
  StyleConstants.setBold(s,(bold==1)?true:false); // 粗體
  StyleConstants.setItalic(s,(italic==1)?true:false); // 斜體
  StyleConstants.setUnderline(s,(underline==1)?true:false); // 下劃線
  StyleConstants.setForeground(s,color); // 顏色
  StyleConstants.setFontFamily(s,fontName); // 字體
}
}