java中如何调出字体对话框_java 字体对话框
本人不才！花了很長時間寫了這個代碼。不是很好，比起Windows自帶的字體對話框差一點。
不過已經夠用了。等將來有時間了，在進行完善。
如果有什么好的建議，可以提。本人再補。
預覽效果如下圖：
package styleDispose;
import java.awt.GraphicsEnvironment;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.ListModel;
import java.awt.Font;
import javax.swing.JPanel;
import java.awt.Rectangle;
import javax.swing.JScrollPane;
import javax.swing.BorderFactory;
import javax.swing.border.TitledBorder;
import java.awt.Color;
import javax.swing.JList;
import javax.swing.JLabel;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.JTextField;
import javax.swing.border.BevelBorder;
import javax.swing.border.SoftBevelBorder;
import javax.swing.JButton;
import javax.swing.SwingConstants;
public class FontChooserDialog extends JDialog {
/**
*
*/
private static final long serialVersionUID = 1L;
/**
* 界面設計需要
* */
private JPanel jPanel = null;
private JScrollPane jScrollPane = null;
private JPanel jPanel1 = null;
private JLabel jLabel = null;
private JLabel jLabel1 = null;
private JLabel jLabel2 = null;
private JTextField fontNameText = null;
private JTextField fontItalicText = null;
private JTextField fontSizeText = null;
private JList fontNameList = null;
private JList fontItalicList = null;
private JList fontSizeList = null;
private JPanel jPanel2 = null;
private JButton okButton = null;
private JButton regitButton = null;
private JButton cancleButton = null;
private JScrollPane jScrollPane1 = null;
private JScrollPane jScrollPane2 = null;
private JScrollPane jScrollPane3 = null;
private static JLabel fontStyle = null;
/**
* 字體默認變量
* */
private Font defaultFont = new Font("\u5b8b\u4f53", Font.PLAIN, 12);
/**
* 返回字體變量
* */
private static Font returnFont = null;
/**
* Boolean 變量,判斷是否正常返回,是否用戶選擇了字體
* */
private static boolean judge = false;
/**
* 以防止事件重復調用或不必要的更改,定義兩個boolean變量分別
* 為:fontNameList和fontSizeList判斷
* 等于true則循環調用,false則不
* */
private boolean nameJuge = true;
private boolean sizeJuge = true;
public FontChooserDialog(){
this(null);
}
public FontChooserDialog(JFrame jframe){
this(jframe,true);
}
public FontChooserDialog(JFrame jframe,boolean boo){
this(jframe,boo,null);
}
public FontChooserDialog(JFrame jframe,boolean boo,Font font){
super(jframe,boo);
initialize();
initializeFont(font);
this.setLocationRelativeTo(jframe);
}
/**
* This method initializes this
*
*/
private void initialize() {
this.setContentPane(getJPanel());
this.setFont(new Font("\u5b8b\u4f53", Font.PLAIN, 12));
this.setBounds(new Rectangle(0, 0, 430, 335));
this.setTitle("字體選擇對話框");
this.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e) {
judge = false;
closeWindow();
}
});
}
public static Font showDialog(JFrame jframe,boolean boo){
return showDialog(jframe,boo,null);
}
public static Font showDialog(JFrame jframe,boolean boo,Font font){
JDialog jd = new FontChooserDialog(jframe,boo,font);
jd.setVisible(true);
if(judge){returnFont = fontStyle.getFont();}
jd.dispose();
return returnFont;
}
/**
* This method initializes jPanel
*
* @return javax.swing.JPanel
*/
private JPanel getJPanel() {
if (jPanel == null) {
jPanel = new JPanel();
jPanel.setLayout(null);
jPanel.setFont(new Font("Dialog", Font.PLAIN, 12));
jPanel.add(getJPanel1(), null);
jPanel.add(getJPanel2(), null);
jPanel.add(getOkButton(), null);
jPanel.add(getRegitButton(), null);
jPanel.add(getCancleButton(), null);
}
return jPanel;
}
/**
* This method initializes jScrollPane
*
* @return javax.swing.JScrollPane
*/
private JScrollPane getJScrollPane() {
if (jScrollPane == null) {
fontStyle = new JLabel();
fontStyle.setText("你好！天生我才必有用!Hello World!");
fontStyle.setFont(new Font("\u5b8b\u4f53", Font.PLAIN, 12));
fontStyle.setHorizontalAlignment(SwingConstants.CENTER);
fontStyle.setHorizontalTextPosition(SwingConstants.CENTER);
jScrollPane = new JScrollPane();
jScrollPane.setBorder(BorderFactory.createBevelBorder(BevelBorder.LOWERED));
jScrollPane.setViewportView(fontStyle);
jScrollPane.setBounds(new Rectangle(5, 20, 400, 60));
}
return jScrollPane;
}
/**
* This method initializes jPanel1
*
* @return javax.swing.JPanel
*/
private JPanel getJPanel1() {
if (jPanel1 == null) {
jLabel2 = new JLabel();
jLabel2.setBounds(new Rectangle(285, 5, 120, 15));
jLabel2.setFont(new Font("\u5b8b\u4f53", Font.PLAIN, 12));
jLabel2.setText("大小:");
jLabel1 = new JLabel();
jLabel1.setBounds(new Rectangle(160, 5, 120, 15));
jLabel1.setFont(new Font("\u5b8b\u4f53", Font.PLAIN, 12));
jLabel1.setText("字型:");
jLabel = new JLabel();
jLabel.setBounds(new Rectangle(5, 5, 150, 15));
jLabel.setDisplayedMnemonic(KeyEvent.VK_UNDEFINED);
jLabel.setFont(new Font("\u5b8b\u4f53", Font.PLAIN, 12));
jLabel.setText("字體:");
jPanel1 = new JPanel();
jPanel1.setLayout(null);
jPanel1.setBounds(new Rectangle(5, 5, 410, 175));
jPanel1.setBorder(new SoftBevelBorder(SoftBevelBorder.LOWERED));
jPanel1.add(jLabel, null);
jPanel1.add(jLabel1, null);
jPanel1.add(jLabel2, null);
jPanel1.add(getFontNameText(), null);
jPanel1.add(getFontItalicText(), null);
jPanel1.add(getFontSizeText(), null);
jPanel1.add(getJScrollPane1(), null);
jPanel1.add(getJScrollPane2(), null);
jPanel1.add(getJScrollPane3(), null);
}
return jPanel1;
}
/**
* This method initializes fontNameText
*
* @return javax.swing.JTextField
*/
private JTextField getFontNameText() {
if (fontNameText == null) {
fontNameText = new JTextField();
fontNameText.setBounds(new Rectangle(5, 25, 150, 20));
fontNameText.setFont(new Font("\u5b8b\u4f53", Font.PLAIN, 12));
fontNameText.addKeyListener(new KeyAdapter(){
public void keyTyped(KeyEvent e) {
String oldText = fontNameText.getText();
String newText = "";
if("".equals(fontNameText.getSelectedText()) && null == fontNameText.getSelectedText()){
newText = fontNameText.getText()+e.getKeyChar();
}else{
newText = oldText.substring(0,fontNameText.getSelectionStart())+e.getKeyChar()+oldText.substring(fontNameText.getSelectionEnd());
}
System.out.println("fontName:"+newText);
nameJuge = false;
fontNameList.setSelectedValue(getLateIndex(fontNameList,newText),true);
nameJuge = true;
}
});
}
return fontNameText;
}
/**
* This method initializes fontItalicText
*
* @return javax.swing.JTextField
*/
private JTextField getFontItalicText() {
if (fontItalicText == null) {
fontItalicText = new JTextField();
fontItalicText.setBounds(new Rectangle(160, 25, 120, 20));
fontItalicText.setFont(new Font("\u5b8b\u4f53", Font.PLAIN, 12));
fontItalicText.setEnabled(false);
}
return fontItalicText;
}
/**
* This method initializes fontSizeText
*
* @return javax.swing.JTextField
*/
private JTextField getFontSizeText() {
if (fontSizeText == null) {
fontSizeText = new JTextField();
fontSizeText.setBounds(new Rectangle(285, 25, 120, 20));
fontSizeText.setFont(new Font("\u5b8b\u4f53", Font.PLAIN, 12));
fontSizeText.setColumns(4);
fontSizeText.addKeyListener(new KeyAdapter(){
public void keyTyped(KeyEvent e) {
//System.out.println("Key Code:"+(Character.getNumericValue(e.getKeyChar())==-1));
String oldText = fontSizeText.getText();
String newText = "";
if("".equals(fontSizeText.getSelectedText()) && null == fontSizeText.getSelectedText()){
newText = fontSizeText.getText()+e.getKeyChar();
}else{
newText = oldText.substring(0,fontSizeText.getSelectionStart())+e.getKeyChar()+oldText.substring(fontSizeText.getSelectionEnd());
}
//System.out.println("fontSize:"+newText);
sizeJuge = false;
fontSizeList.setSelectedValue(getLateIndex(fontSizeList,newText),true);
if(newText.matches("(\\d)+")){
fontStyle.setFont(new Font(fontStyle.getFont().getFontName(),fontStyle.getFont().getStyle(),Integer.parseInt(newText)));
}
sizeJuge = true;
}
});
}
return fontSizeText;
}
/**
* This method initializes fontNameList
*
* @return javax.swing.JList
*/
private JList getFontNameList() {
if (fontNameList == null) {
fontNameList = new JList(GraphicsEnvironment.getLocalGraphicsEnvironment()
.getAvailableFontFamilyNames());
fontNameList.setFont(new Font("\u5b8b\u4f53", Font.PLAIN, 12));
fontNameList
.addListSelectionListener(new javax.swing.event.ListSelectionListener() {
public void valueChanged(javax.swing.event.ListSelectionEvent e) {
if(nameJuge){fontNameText.setText(fontNameList.getSelectedValue().toString());}
fontStyle.setFont(new Font(fontNameList.getSelectedValue().toString(),fontStyle.getFont().getStyle(),fontStyle.getFont().getSize()));
}
});
}
return fontNameList;
}
/**
* This method initializes fontItalicList
*
* @return javax.swing.JList
*/
private JList getFontItalicList() {
if (fontItalicList == null) {
fontItalicList = new JList(new String[]{"Plain", "Bold", "Italic","Bold Italic"});
fontItalicList.setFont(new Font("\u5b8b\u4f53", Font.PLAIN, 12));
fontItalicList
.addListSelectionListener(new javax.swing.event.ListSelectionListener() {
public void valueChanged(javax.swing.event.ListSelectionEvent e) {
fontItalicText.setText(fontItalicList.getSelectedValue().toString());
fontStyle.setFont(new Font(fontStyle.getFont().getFontName(),fontItalicList.getSelectedIndex(),fontStyle.getFont().getSize()));
}
});
}
return fontItalicList;
}
/**
* This method initializes fontSizeList
*
* @return javax.swing.JList
*/
private JList getFontSizeList() {
if (fontSizeList == null) {
fontSizeList = new JList(new String[]{"3", "4", "5", "6", "7", "8", "9", "10",
"11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "22",
"24", "27", "30", "34", "39", "45", "51", "60"});
fontSizeList.setFont(new Font("\u5b8b\u4f53", Font.PLAIN, 12));
fontSizeList
.addListSelectionListener(new javax.swing.event.ListSelectionListener() {
public void valueChanged(javax.swing.event.ListSelectionEvent e) {
if(sizeJuge){fontSizeText.setText(fontSizeList.getSelectedValue().toString());}
fontStyle.setFont(new Font(fontStyle.getFont().getFontName(),fontStyle.getFont().getStyle(),Integer.parseInt(fontSizeList.getSelectedValue().toString())));
}
});
}
return fontSizeList;
}
/**
* This method initializes jPanel2
*
* @return javax.swing.JPanel
*/
private JPanel getJPanel2() {
if (jPanel2 == null) {
jPanel2 = new JPanel();
jPanel2.setLayout(null);
jPanel2.setBounds(new Rectangle(3, 180, 414, 90));
jPanel2.setBorder(BorderFactory.createTitledBorder(null, "\u6548\u679c\u9884\u89c8", TitledBorder.DEFAULT_JUSTIFICATION, TitledBorder.DEFAULT_POSITION, new Font("\u5b8b\u4f53", Font.PLAIN, 12), new Color(51, 51, 51)));
jPanel2.add(getJScrollPane(), null);
}
return jPanel2;
}
/**
* This method initializes okButton
*
* @return javax.swing.JButton
*/
private JButton getOkButton() {
if (okButton == null) {
okButton = new JButton();
okButton.setBounds(new Rectangle(215, 275, 60, 20));
okButton.setFont(new Font("\u5b8b\u4f53", Font.PLAIN, 12));
okButton.setText("確定");
okButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent e) {
judge = true;
closeWindow();
}
});
}
return okButton;
}
/**
* This method initializes regitButton
*
* @return javax.swing.JButton
*/
private JButton getRegitButton() {
if (regitButton == null) {
regitButton = new JButton();
regitButton.setBounds(new Rectangle(285, 275, 60, 20));
regitButton.setFont(new Font("\u5b8b\u4f53", Font.PLAIN, 12));
regitButton.setText("重置");
regitButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent e) {
initializeFont(null);
}
});
}
return regitButton;
}
/**
* This method initializes cancleButton
*
* @return javax.swing.JButton
*/
private JButton getCancleButton() {
if (cancleButton == null) {
cancleButton = new JButton();
cancleButton.setBounds(new Rectangle(355, 275, 60, 20));
cancleButton.setFont(new Font("\u5b8b\u4f53", Font.PLAIN, 12));
cancleButton.setText("取消");
cancleButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent e) {
judge = false;
closeWindow();
}
});
}
return cancleButton;
}
/**
* This method initializes jScrollPane1
*
* @return javax.swing.JScrollPane
*/
private JScrollPane getJScrollPane1() {
if (jScrollPane1 == null) {
jScrollPane1 = new JScrollPane();
jScrollPane1.setBounds(new Rectangle(5, 50, 150, 120));
jScrollPane1.setViewportView(getFontNameList());
}
return jScrollPane1;
}
/**
* This method initializes jScrollPane2
*
* @return javax.swing.JScrollPane
*/
private JScrollPane getJScrollPane2() {
if (jScrollPane2 == null) {
jScrollPane2 = new JScrollPane();
jScrollPane2.setBounds(new Rectangle(160, 50, 120, 120));
jScrollPane2.setViewportView(getFontItalicList());
}
return jScrollPane2;
}
/**
* This method initializes jScrollPane3
*
* @return javax.swing.JScrollPane
*/
private JScrollPane getJScrollPane3() {
if (jScrollPane3 == null) {
jScrollPane3 = new JScrollPane();
jScrollPane3.setBounds(new Rectangle(285, 50, 120, 120));
jScrollPane3.setViewportView(getFontSizeList());
}
return jScrollPane3;
}
/**
* 默認的字體初始化方法
* */
private void initializeFont(Font font){
if(font!=null){
defaultFont = font;
fontStyle.setFont(defaultFont);
}
fontStyle.setFont(defaultFont);
fontNameList.setSelectedValue(defaultFont.getFontName(), true);
fontSizeList.setSelectedValue(new Integer(defaultFont.getSize()).toString(), true);
fontItalicList.setSelectedIndex(defaultFont.getStyle());
}
/**
* 判斷里給定的值最近的索引
* */
private Object getLateIndex(JList jlist,String str){
ListModel list = jlist.getModel();
if(str.matches("(\\d)+")){
for(int i = list.getSize()-1;i>=0;i--){
if(Integer.parseInt(list.getElementAt(i).toString())<=Integer.parseInt(str)){
return list.getElementAt(i);
}
}
}else {
for(int i = list.getSize()-2;i>=0;i--){
if(str.compareToIgnoreCase(list.getElementAt(i).toString())==0){
return list.getElementAt(i);
}else if(str.compareToIgnoreCase(list.getElementAt(i).toString())>0){
return list.getElementAt(i+1);
}
}
}
return list.getElementAt(0);
}
/**
* 窗體關閉方法!
* */
private void closeWindow(){
this.setVisible(false);
}
} // @jve:decl-index=0:visual-constraint="91,34"
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