mainframe.java

这是各类实用工具的源码100例

package jfontstextdemo;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.*;
import java.util.*;

public class MainFrame extends JFrame {
  private JPanel contentPane;
  private BorderLayout borderLayout1 = new BorderLayout();
  private JPanel jPanel1 = new JPanel();
  private JComboBox jComboBox1;
  private JComboBox jComboBox2;
  private JComboBox jComboBox3;
  private TitledBorder titledBorder1;
  private TitledBorder titledBorder2;
  private GridLayout gridLayout1 = new GridLayout();
  private TitledBorder titledBorder3;


  String fontChoice = "fontchoice";
  int styleChoice = 0;
  String sizeChoice = "10";

  DisplayPanel displayPanel = new DisplayPanel();


  //Construct the frame
  public MainFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {

    GraphicsEnvironment gEnv = GraphicsEnvironment.getLocalGraphicsEnvironment();
    String envfonts[] = gEnv.getAvailableFontFamilyNames();
    Vector vector = new Vector();
    for ( int i = 1; i < envfonts.length; i++ ) {
      vector.addElement(envfonts[i]);
    }


    jComboBox1 = new JComboBox(vector);
    jComboBox1.setMaximumRowCount( 9 );
    jComboBox1.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        jComboBox1_itemStateChanged(e);
      }
    });
    fontChoice = envfonts[0];

    jComboBox2 = new JComboBox(new Object[]{
                                "PLAIN",
                                "BOLD",
                                "ITALIC",
                                "BOLD & ITALIC"});
    jComboBox2.setMaximumRowCount( 9 );
    jComboBox2.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        jComboBox2_itemStateChanged(e);
      }
    });

    jComboBox3 = new JComboBox(new Object[]{ "10", "12", "14", "16", "18","20","22","24","26","28","30"});
    jComboBox3.setMaximumRowCount( 9 );
    jComboBox3.addItemListener(new java.awt.event.ItemListener() {
      public void itemStateChanged(ItemEvent e) {
        jComboBox3_itemStateChanged(e);
      }
    });

    //setIconImage(Toolkit.getDefaultToolkit().createImage(MainFrame.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    titledBorder1 = new TitledBorder(BorderFactory.createEtchedBorder(Color.white,new Color(142, 142, 142)),"Fonts");
    titledBorder2 = new TitledBorder(BorderFactory.createEtchedBorder(Color.white,new Color(142, 142, 142)),"Styles");
    titledBorder3 = new TitledBorder(BorderFactory.createEtchedBorder(Color.white,new Color(142, 142, 142)),"Sizes");
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(474, 253));
    this.setTitle("JFontsTextDemo");
    jComboBox1.setFont(new java.awt.Font("Dialog", 0, 14));
    jComboBox1.setAutoscrolls(true);
    jComboBox1.setBorder(titledBorder1);
    jComboBox2.setFont(new java.awt.Font("Dialog", 0, 14));
    jComboBox2.setBorder(titledBorder2);
    jPanel1.setLayout(gridLayout1);
    jComboBox3.setFont(new java.awt.Font("Dialog", 0, 14));
    jComboBox3.setBorder(titledBorder3);
    contentPane.add(jPanel1, BorderLayout.NORTH);
    jPanel1.add(jComboBox1, null);
    jPanel1.add(jComboBox2, null);
    jPanel1.add(jComboBox3, null);

    contentPane.add(this.displayPanel,BorderLayout.CENTER);
  }
  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  void jComboBox1_itemStateChanged(ItemEvent e) {
    if ( e.getStateChange() != ItemEvent.SELECTED ) {
           return;
    }

    fontChoice = (String)jComboBox1.getSelectedItem();
    this.displayPanel.changeFont(fontChoice, styleChoice, sizeChoice);

  }

  void jComboBox2_itemStateChanged(ItemEvent e) {
    if ( e.getStateChange() != ItemEvent.SELECTED ) {
       return;
    }

    styleChoice = jComboBox2.getSelectedIndex();
    this.displayPanel.changeFont(fontChoice, styleChoice, sizeChoice);
  }

  void jComboBox3_itemStateChanged(ItemEvent e) {
    if ( e.getStateChange() != ItemEvent.SELECTED ) {
       return;
    }

    sizeChoice = (String)jComboBox3.getSelectedItem();
    this.displayPanel.changeFont(fontChoice, styleChoice, sizeChoice);

  }
}