一步一步地实现菜单栏(JMenuBar)工具栏(JPopupMenu)组合框(JComboBox)复选框(JCheckBox)单选按钮(JRadioButton)文本域的综合应用(二)

        本程序在上一程序的基础上添加了工具栏JToolBar和快捷菜单JPopupMenu(右键弹出菜单)以及快捷键菜单栏的设置，暂时没添加重要的事件，下一篇将会添加详细的事件，慢慢完善此综合程序。

     源码如下：

 import java.awt.Color; import java.awt.Dimension; import java.awt.GraphicsEnvironment; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.InputEvent; import java.awt.event.KeyEvent; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import javax.swing.ButtonGroup; import javax.swing.JCheckBox; import javax.swing.JCheckBoxMenuItem; import javax.swing.JComboBox; import javax.swing.JFrame; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.JPopupMenu; import javax.swing.JRadioButton; import javax.swing.JRadioButtonMenuItem; import javax.swing.JScrollPane; import javax.swing.JTextArea; import javax.swing.JToolBar; import javax.swing.KeyStroke; public class EditorJFrame2 extends JFrame implements MouseListener{ private JComboBox combox_name,combox_size;//字体、字号组合框 private JCheckBox checkb_bold,checkb_italic;//粗体斜体复选框 private JRadioButton radiob_color[];//颜色单选按钮 private JTextArea text; private Color color; private JPopupMenu popupmenu;//快捷菜单 public EditorJFrame2(){ super("文本编辑器");//默认BorderLayout布局 Dimension dim = getToolkit().getScreenSize(); setBounds(dim.width/4,dim.height/4,dim.width/2,dim.height/2); setDefaultCloseOperation(EXIT_ON_CLOSE); text = new JTextArea("Welcome 欢迎"); add(new JScrollPane(text)); addmyMenu();//菜单栏 addmyJToolbar();//工具栏 addmyJPopupMenu();//文本域的快捷键 setVisible(true); } private void addmyMenu(){//菜单栏部分 JMenuBar menubar = new JMenuBar();//菜单栏 setJMenuBar(menubar); String menustr[] = {"文件","编辑","帮助"}; JMenu menu[]=new JMenu[menustr.length];//菜单 for(int i=0;i<menustr.length;i++){ menu[i] = new JMenu(menustr[i]); menubar.add(menu[i]); } menu[0].add(new JMenuItem("打开"));//菜单项加入到菜单"文件"里 menu[0].add(new JMenuItem("保存")); menu[0].addSeparator();//添加分割线 JMenuItem menuitem_exit = new JMenuItem("退出"); menu[0].add(menuitem_exit); // JMenu menu_style = new JMenu("字形");//菜单 menu_style.add(new JCheckBoxMenuItem("粗体")); menu_style.add(new JCheckBoxMenuItem("斜体")); menu[1].add(menu_style); JMenu menu_color = new JMenu("颜色");//菜单 menu[1].add(menu_color); ButtonGroup buttongroup = new ButtonGroup();//按钮组 String colorstr[]={"红","绿","蓝"}; JRadioButtonMenuItem rbmi_color[]=new JRadioButtonMenuItem[colorstr.length];//单选菜单项 for(int i =0;i<colorstr.length;i++){ rbmi_color[i] = new JRadioButtonMenuItem(colorstr[i]); buttongroup.add(rbmi_color[i]);//单选菜单项添加到按钮组中 // menu_color.add(rbmi_color[i]);//单选菜单项添加到菜单中 } menu[2].add(new JMenuItem("关于作者")); } private void addmyJToolbar(){//工具栏部分 JToolBar toolbar=new JToolBar(); //创建工具栏，默认水平方向 add(toolbar,"North"); //工具栏添加到框架内容窗格北部 GraphicsEnvironment ge=GraphicsEnvironment.getLocalGraphicsEnvironment(); String[] fontsName=ge.getAvailableFontFamilyNames(); //获得系统字体 combox_name = new JComboBox(fontsName); //组合框显示系统字体 // toolbar.add(combox_name);//字体组合框加到工具栏里 //设置组合框的宽度200和高度30 combox_name.setMaximumSize(new Dimension(260,30)); String sizestr[]={"20","30","40","50","60","70"}; combox_size = new JComboBox(sizestr); //数组加到字号组合框 //组合框默认不可编辑 combox_size.setEditable(true); //设置组合框可编辑 // combox_size.setMaximumSize(new Dimension(180,30)); toolbar.add(combox_size);//字体组合框加到工具栏里 checkb_bold = new JCheckBox("粗体"); //字形复选框 toolbar.add(checkb_bold); // checkb_italic = new JCheckBox("斜体"); toolbar.add(checkb_italic); // String colorstr[]={"红","绿","蓝"}; ButtonGroup bgroup_color = new ButtonGroup(); //按钮组 radiob_color = new JRadioButton[colorstr.length];//颜色单选按钮数组 for (int i=0; i<radiob_color.length; i++) { radiob_color[i]=new JRadioButton(colorstr[i]); //颜色单选按钮 // bgroup_color.add(radiob_color[i]); //单选按钮添加到按钮组 toolbar.add(radiob_color[i]); ////////单选按钮添加到工具栏 } radiob_color[0].setSelected(true); //设置单选按钮的选中状态 } private void addmyJPopupMenu(){ popupmenu = new JPopupMenu(); //快捷菜单对象,或弹出菜单 String menuitemstr[]={"复制","粘贴","剪切"}; JMenuItem popmenuitem[] = new JMenuItem[menuitemstr.length]; for (int i=0; i<popmenuitem.length; i++) { popmenuitem[i] = new JMenuItem(menuitemstr[i]); //菜单项 popupmenu.add(popmenuitem[i]); /////快捷菜单项加入弹出菜单 // } popmenuitem[0].setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_X, InputEvent.CTRL_MASK));//设置快捷键Ctrl+X popmenuitem[1].setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C, InputEvent.CTRL_MASK));//设置快捷键Ctrl+C popmenuitem[2].setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_V, InputEvent.CTRL_MASK));//设置快捷键Ctrl+V text.add(popupmenu); //弹出菜单加到文本域中 text.addMouseListener(this); } public static void main(String[] args) { new EditorJFrame2(); } @Override public void mouseClicked(MouseEvent e) { if (e.getModifiers()==MouseEvent.BUTTON3_MASK) //单击的是鼠标右键 popupmenu.show(text,e.getX(),e.getY()); //在鼠标单击处显示快捷菜单 } @Override public void mouseEntered(MouseEvent e) { // TODO Auto-generated method stub } @Override public void mouseExited(MouseEvent e) { // TODO Auto-generated method stub } @Override public void mousePressed(MouseEvent e) { // TODO Auto-generated method stub } @Override public void mouseReleased(MouseEvent e) { // TODO Auto-generated method stub } }