java字体设置，包括大小，颜色，加粗，下划线，对齐，斜体的设置

本文转自：http://www.blogjava.net/Swing/archive/2007/12/26/128965.html

 

想做一个文本编辑器的朋友，来这里是找对了！！
下面的代码告诉我们该怎么在文本编辑器中设置字体大小，颜色，加粗，下划线等许多便捷操作~
花了很长的时间找了这么一个资料，真是累煞我了~~！！
差点都要放弃了，最后终于在网络中搜索到了这么一段十分有用、十分有价值的东东！
感谢网络java程序员精英的大公无私，为我们奉献了这么好的代码~~十分感谢！

 

import java.awt.BorderLayout; import java.awt.Color; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JEditorPane; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTextPane; import javax.swing.UIManager; import javax.swing.WindowConstants; import javax.swing.text.AttributeSet; import javax.swing.text.DefaultStyledDocument; import javax.swing.text.Document; import javax.swing.text.EditorKit; import javax.swing.text.MutableAttributeSet; import javax.swing.text.SimpleAttributeSet; import javax.swing.text.StyleConstants; import javax.swing.text.StyledDocument; import javax.swing.text.StyledEditorKit; public class TestFonts extends javax.swing.JFrame implements ActionListener { private static final long serialVersionUID = 1L; private JPanel jp1; private JButton color; private JTextPane jep; private JScrollPane jsp; private JButton font; /** * Auto-generated main method to display this JFrame */ public static void main(String[] args) { TestFonts inst = new TestFonts(); inst.setVisible(true); } public TestFonts() { super(); initGUI(); } private void initGUI() { try { BorderLayout thisLayout = new BorderLayout(); getContentPane().setLayout(thisLayout); setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE); { jp1 = new JPanel(); getContentPane().add(jp1, BorderLayout.NORTH); { font = new JButton(); font.addActionListener(this); jp1.add(font); font.setText("font"); } { color = new JButton(); jp1.add(color); color.addActionListener(this); color.setText("color"); } } { jsp = new JScrollPane(); getContentPane().add(jsp, BorderLayout.CENTER); { jep = new JTextPane(); jsp.setViewportView(jep); jep.setDocument(new DefaultStyledDocument()); } } pack(); setSize(400, 300); } catch (Exception e) { e.printStackTrace(); } } public static void setFontSize(JEditorPane editor, int size) { if (editor != null) { if ((size > 0) && (size < 512)) { MutableAttributeSet attr = new SimpleAttributeSet(); StyleConstants.setFontSize(attr, size); setCharacterAttributes(editor, attr, false); } else { UIManager.getLookAndFeel().provideErrorFeedback(editor); } } } public static void setForeground(JEditorPane editor, Color fg) { if (editor != null) { if (fg != null) { MutableAttributeSet attr = new SimpleAttributeSet(); StyleConstants.setForeground(attr, fg); setCharacterAttributes(editor, attr, false); } else { UIManager.getLookAndFeel().provideErrorFeedback(editor); } } } public static final void setCharacterAttributes(JEditorPane editor, AttributeSet attr, boolean replace) { int p0 = editor.getSelectionStart(); int p1 = editor.getSelectionEnd(); if (p0 != p1) { StyledDocument doc = getStyledDocument(editor); doc.setCharacterAttributes(p0, p1 - p0, attr, replace); } StyledEditorKit k = getStyledEditorKit(editor); MutableAttributeSet inputAttributes = k.getInputAttributes(); if (replace) { inputAttributes.removeAttributes(inputAttributes); } inputAttributes.addAttributes(attr); } protected static final StyledDocument getStyledDocument(JEditorPane e) { Document d = e.getDocument(); if (d instanceof StyledDocument) { return (StyledDocument) d; } throw new IllegalArgumentException("document must be StyledDocument"); } protected static final StyledEditorKit getStyledEditorKit(JEditorPane e) { EditorKit k = e.getEditorKit(); if (k instanceof StyledEditorKit) { return (StyledEditorKit) k; } throw new IllegalArgumentException("EditorKit must be StyledEditorKit"); } public void actionPerformed(ActionEvent e) { Object obj = e.getSource(); if (obj == font) { JEditorPane editor = jep; setFontSize(editor, 20); } if (obj == color) { JEditorPane editor = jep; setForeground(editor, Color.red); } } }

其他操作如下： 1、对字体的操作 MutableAttributeSet attr = new SimpleAttributeSet(); StyleConstants.setFontFamily(attr, family); setCharacterAttributes(editor, attr, false); family为字体 2、对字体大小的操作 MutableAttributeSet attr = new SimpleAttributeSet(); StyleConstants.setFontSize(attr, size); setCharacterAttributes(editor, attr, false); size为字号 3、是否是粗体的操作 StyledEditorKit kit = getStyledEditorKit(editor); MutableAttributeSet attr = kit.getInputAttributes(); boolean bold = (StyleConstants.isBold(attr)) ? false : true; SimpleAttributeSet sas = new SimpleAttributeSet(); StyleConstants.setBold(sas, bold); setCharacterAttributes(editor, sas, false); 4、是否是斜体的操作 StyledEditorKit kit = getStyledEditorKit(editor); MutableAttributeSet attr = kit.getInputAttributes(); boolean italic = (StyleConstants.isItalic(attr)) ? false : true; SimpleAttributeSet sas = new SimpleAttributeSet(); StyleConstants.setItalic(sas, italic); setCharacterAttributes(editor, sas, false); 5、是否有下划线的操作 StyledEditorKit kit = getStyledEditorKit(editor); MutableAttributeSet attr = kit.getInputAttributes(); boolean underline = (StyleConstants.isUnderline(attr)) ? false : true; SimpleAttributeSet sas = new SimpleAttributeSet(); StyleConstants.setUnderline(sas, underline); setCharacterAttributes(editor, sas, false); 6、左中右对齐的处理 MutableAttributeSet attr = new SimpleAttributeSet(); StyleConstants.setAlignment(attr, a); setParagraphAttributes(editor, attr, false); public static final void setParagraphAttributes(JEditorPane editor, AttributeSet attr, boolean replace) { int p0 = editor.getSelectionStart(); int p1 = editor.getSelectionEnd(); StyledDocument doc = getStyledDocument(editor); doc.setParagraphAttributes(p0, p1 - p0, attr, replace); } a:0：左，1：中，2：右 7、文本字体颜色的设置 MutableAttributeSet attr = new SimpleAttributeSet(); StyleConstants.setForeground(attr, fg); setCharacterAttributes(editor, attr, false); fg：为color 8、文本背景颜色的设置 MutableAttributeSet attr = new SimpleAttributeSet(); StyleConstants.setBackground(attr, bg); setCharacterAttributes(editor, attr, false);