fontdialog.java

用java写的记事本 基本功能与windows自带的相同

	package notebook;

	import java.awt.Frame;

	import javax.swing.JDialog;
	import javax.swing.JPanel;
	import javax.swing.JLabel;
	import com.borland.jbcl.layout.XYLayout;
	import com.borland.jbcl.layout.*;
	import javax.swing.JTextArea;
	import javax.swing.JTextField;
	import javax.swing.JList;
	import javax.swing.JEditorPane;
	import java.awt.List;
	import java.awt.Dimension;
	import java.awt.Button;
	import java.awt.TextField;
	import java.awt.Color;
	import javax.swing.UIManager;
	import java.awt.Font;
	import java.awt.Choice;
	import javax.swing.JComboBox;
	import java.awt.event.ActionListener;
	import java.awt.event.ActionEvent;
	import java.awt.event.*;
	import java.awt.*;
	import javax.swing.JOptionPane;
	import java.nio.charset.Charset;

	
	
	public class FontDialog extends JDialog implements ItemListener, ActionListener,
	        TextListener {
	    JPanel panel1 = new JPanel();
	    JLabel jLabel1 = new JLabel();
	    XYLayout xYLayout1 = new XYLayout();
	    JTextField jtxtFontName = new JTextField();
	    List listFontName = new List();
	    JLabel jLabel2 = new JLabel();
	    List listFontStyle = new List();
	    JTextField jtxtFontStyle = new JTextField();
	    JLabel jLabel3 = new JLabel();
	    JTextField jtxtFontSize = new JTextField();
	    List listFontSize = new List(4, false);
	    Button btnOk = new Button();
	    Button btnCancel = new Button();
	    JLabel jLabel4 = new JLabel();
	    TextField txtDemo = new TextField();
	    JLabel jLabel5 = new JLabel();
	    int fontSizeMin = 8, fontSizeMax = 72, fontSizeChangedStep = 1;
	    NoteBook mainFrame = null;
	    int fontStyleInt = 0;
	    Choice choiceCharset = new Choice();
	    public FontDialog(Frame owner, String title, boolean modal) {
	        super(owner, title, modal);
	        try {
	            setDefaultCloseOperation(DISPOSE_ON_CLOSE);
	            jbInit();

	            pack();
	        } catch (Exception exception) {
	            exception.printStackTrace();
	        }
	    }

	    public FontDialog(Frame parent) {
	        super(parent);
	        try {
	            mainFrame = (NoteBook) parent;
	            initFontName(mainFrame.textArea.getFont());
	            initFontStyle(mainFrame.textArea.getFont());
	            initFontSize(mainFrame.textArea.getFont());
	            Charset defaultCharset=java.nio.charset.Charset.defaultCharset();
	            this.choiceCharset.add(defaultCharset.name());
	            jbInit();
	        } catch (Exception exception) {
	            exception.printStackTrace();
	        }
	    }

	    public FontDialog() {
	        this(new Frame(), "FontDialog", false);
	    }

	    private void jbInit() throws Exception {
	        panel1.setLayout(xYLayout1);
	        this.setResizable(false);
	        this.setTitle("字体");
	        jLabel1.setText("字体(F):");
	        jLabel2.setText("字形(Y):");
	        panel1.setPreferredSize(new Dimension(400, 300));
	        jLabel3.setText("大小(S):");
	        btnOk.setLabel("确定");
	        btnCancel.setLabel("取消");
	        jLabel4.setText("示例");
	        txtDemo.setBackground(UIManager.getColor("Button.background"));
	        txtDemo.setFont(new java.awt.Font("仿宋_GB2312", Font.ITALIC, 12));
	        txtDemo.setForeground(Color.black);
	        txtDemo.setLocale(new java.util.Locale("zh", "", ""));
	        txtDemo.setText("演示字体");
	        jLabel5.setText("字符集(R):");
	        panel1.add(jLabel1, new XYConstraints(19, 20, 77, 17));
	        panel1.add(jtxtFontName, new XYConstraints(21, 39, 124, -1));
	        panel1.add(jLabel2, new XYConstraints(166, 21, -1, -1));
	        panel1.add(jLabel3, new XYConstraints(256, 22, -1, -1));
	        panel1.add(listFontStyle, new XYConstraints(151, 66, 98, 116));
	        panel1.add(listFontSize, new XYConstraints(253, 66, 62, 116));
	        panel1.add(listFontName, new XYConstraints(20, 66, 127, 116));
	        panel1.add(jtxtFontStyle, new XYConstraints(150, 39, 98, -1));
	        panel1.add(jtxtFontSize, new XYConstraints(253, 39, 63, -1));
	        panel1.add(btnOk, new XYConstraints(322, 37, 59, 25));
	        panel1.add(btnCancel, new XYConstraints(322, 67, 59, -1));
	        panel1.add(txtDemo, new XYConstraints(198, 195, 136, 36));
	        panel1.add(jLabel5, new XYConstraints(163, 238, -1, -1));
	        panel1.add(jLabel4, new XYConstraints(163, 188, -1, -1));
	        panel1.add(choiceCharset, new XYConstraints(165, 259, 168, -1));
	        panel1.setBackground(SystemColor.control);
	        this.getContentPane().add(panel1, java.awt.BorderLayout.SOUTH);
	        btnCancel.addActionListener(this);
	        listFontSize.addItemListener(this);
	        listFontName.addItemListener(this);
	        listFontStyle.addItemListener(this);
	        btnOk.addActionListener(this);
	    }

	    //初始化字体尺寸列表框
	    private void initFontSize(Font font) {
	        int indexOfList = 0;
	        boolean breakHere = false;
	        for (int i = fontSizeMin; i <= fontSizeMax; i = i + fontSizeChangedStep) {
	            if (!breakHere) {
	                if (i != font.getSize()) {
	                    indexOfList++;
	                } else {
	                    breakHere = true;
	                }
	            }
	            listFontSize.add(i + "");
	        }
	        if (indexOfList < 0
	            || indexOfList > (fontSizeMax - fontSizeMin)
	            / fontSizeChangedStep + 1) {
	            listFontSize.select(0);
	        } else {
	            listFontSize.select(indexOfList);
	        }
	        this.jtxtFontSize.setText(font.getSize() + "");
	    }

	    //初始化字体名称列表框
	    private void initFontName(Font font) {
	        String[] s = GraphicsEnvironment.getLocalGraphicsEnvironment().
	                     getAvailableFontFamilyNames();
	        for (int i = 0; i < s.length; i++) {
	            this.listFontName.add(s[i].toString(), i);
	            if (font.getName().equals(s[i].toString())) {
	                this.listFontName.select(i);
	            }
	        }
	        this.jtxtFontName.setText(font.getName());

	    }

	    //初始化字形列表框
	    private void initFontStyle(Font font) {
	        this.listFontStyle.add("常规", Font.PLAIN);
	        this.listFontStyle.add("斜体", Font.ITALIC);
	        this.listFontStyle.add("粗体", Font.BOLD);
	        this.listFontStyle.add("粗斜体", Font.BOLD + Font.ITALIC);
	        this.listFontStyle.select(font.getStyle());
	        this.jtxtFontStyle.setText(listFontStyle.getSelectedItem().toString());
	    }

	    //返回字体
	    public Font returnFont() {
	        return new Font(listFontName.getSelectedItem().toString(), fontStyleInt,
	                        Integer
	                        .parseInt(listFontSize.getSelectedItem()));
	    }

	    public void actionPerformed(ActionEvent e) {
	        if (e.getSource() == btnCancel) {
	            this.dispose();
	        } else if (e.getSource() == btnOk) {
	            mainFrame.textArea.setFont(this.returnFont());
	            this.dispose();
	        }

	    }

	    public void textValueChanged(TextEvent e) {

	    }

	    public void itemStateChanged(ItemEvent e) {
	        if (e.getSource() == listFontSize) {
	            this.jtxtFontSize.setText(listFontSize.getSelectedItem().toString());
	        } else if (e.getSource() == listFontName) {
	            this.jtxtFontName.setText(listFontName.getSelectedItem().toString());
	        } else if (e.getSource() == listFontStyle) {
	            this.jtxtFontStyle.setText(listFontStyle.getSelectedItem().toString());
	            fontStyleInt = listFontStyle.getSelectedIndex();
	        }
	        this.txtDemo.setFont(this.returnFont());
	    }
	}