Java by API/javax.swing/KeyStroke — различия между версиями

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Текущая версия на 17:19, 31 мая 2010

KeyStroke.getKeyStroke(char ch)

   <source lang="java">

import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.InputEvent; import java.awt.event.KeyEvent; import javax.swing.AbstractAction; import javax.swing.Action; import javax.swing.ActionMap; import javax.swing.InputMap; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.KeyStroke; public class MainClass { 

 public static void main(String args[]) {
   String ACTION_KEY = "The Action";
   
   JFrame frame = new JFrame("KeyStroke Sample");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JButton buttonA = new JButton("FOCUSED (control alt 7)");
   JButton buttonB = new JButton("FOCUS/RELEASE (VK_ENTER)");
   JButton buttonC = new JButton("ANCESTOR  (VK_F4+SHIFT_MASK)");
   JButton buttonD = new JButton("WINDOW (" ")");
   Action actionListener = new AbstractAction() {
     public void actionPerformed(ActionEvent actionEvent) {
       JButton source = (JButton) actionEvent.getSource();
       System.out.println("Activated: " + source.getText());
     }
   };
   KeyStroke controlAlt7 = KeyStroke.getKeyStroke("control alt 7");
   InputMap inputMap = buttonA.getInputMap();
   inputMap.put(controlAlt7, ACTION_KEY);
   ActionMap actionMap = buttonA.getActionMap();
   actionMap.put(ACTION_KEY, actionListener);
   KeyStroke enter = KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0, true);
   inputMap = buttonB.getInputMap();
   inputMap.put(enter, ACTION_KEY);
   buttonB.setActionMap(actionMap);
   KeyStroke shiftF4 = KeyStroke.getKeyStroke(KeyEvent.VK_F4,
       InputEvent.SHIFT_MASK);
   inputMap = buttonC
       .getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
   inputMap.put(shiftF4, ACTION_KEY);
   buttonC.setActionMap(actionMap);
   KeyStroke space = KeyStroke.getKeyStroke(" ");
   inputMap = buttonD.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
   inputMap.put(space, ACTION_KEY);
   buttonD.setActionMap(actionMap);
   frame.setLayout(new GridLayout(2, 2));
   frame.add(buttonA);
   frame.add(buttonB);
   frame.add(buttonC);
   frame.add(buttonD);
   frame.setSize(400, 200);
   frame.setVisible(true);
 }

} 

      </source>



KeyStroke.getKeyStroke("control alt 7")

   <source lang="java">

import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.InputEvent; import java.awt.event.KeyEvent; import javax.swing.AbstractAction; import javax.swing.Action; import javax.swing.ActionMap; import javax.swing.InputMap; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.KeyStroke; public class MainClass { 

 public static void main(String args[]) {
   String ACTION_KEY = "The Action";
   
   JFrame frame = new JFrame("KeyStroke Sample");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JButton buttonA = new JButton("FOCUSED (control alt 7)");
   JButton buttonB = new JButton("FOCUS/RELEASE (VK_ENTER)");
   JButton buttonC = new JButton("ANCESTOR  (VK_F4+SHIFT_MASK)");
   JButton buttonD = new JButton("WINDOW (" ")");
   Action actionListener = new AbstractAction() {
     public void actionPerformed(ActionEvent actionEvent) {
       JButton source = (JButton) actionEvent.getSource();
       System.out.println("Activated: " + source.getText());
     }
   };
   KeyStroke controlAlt7 = KeyStroke.getKeyStroke("control alt 7");
   InputMap inputMap = buttonA.getInputMap();
   inputMap.put(controlAlt7, ACTION_KEY);
   ActionMap actionMap = buttonA.getActionMap();
   actionMap.put(ACTION_KEY, actionListener);
   KeyStroke enter = KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0, true);
   inputMap = buttonB.getInputMap();
   inputMap.put(enter, ACTION_KEY);
   buttonB.setActionMap(actionMap);
   KeyStroke shiftF4 = KeyStroke.getKeyStroke(KeyEvent.VK_F4,
       InputEvent.SHIFT_MASK);
   inputMap = buttonC
       .getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
   inputMap.put(shiftF4, ACTION_KEY);
   buttonC.setActionMap(actionMap);
   KeyStroke space = KeyStroke.getKeyStroke(" ");
   inputMap = buttonD.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
   inputMap.put(space, ACTION_KEY);
   buttonD.setActionMap(actionMap);
   frame.setLayout(new GridLayout(2, 2));
   frame.add(buttonA);
   frame.add(buttonB);
   frame.add(buttonC);
   frame.add(buttonD);
   frame.setSize(400, 200);
   frame.setVisible(true);
 }

} 

      </source>



KeyStroke: getKeyStroke(int keyCode,int modifiers,boolean onKeyRelease)

   <source lang="java">

import java.awt.GridLayout; import java.awt.event.ActionEvent; import java.awt.event.InputEvent; import java.awt.event.KeyEvent; import javax.swing.AbstractAction; import javax.swing.Action; import javax.swing.ActionMap; import javax.swing.InputMap; import javax.swing.JButton; import javax.swing.JComponent; import javax.swing.JFrame; import javax.swing.KeyStroke; public class MainClass { 

 public static void main(String args[]) {
   String ACTION_KEY = "The Action";
   
   JFrame frame = new JFrame("KeyStroke Sample");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JButton buttonA = new JButton("FOCUSED (control alt 7)");
   JButton buttonB = new JButton("FOCUS/RELEASE (VK_ENTER)");
   JButton buttonC = new JButton("ANCESTOR  (VK_F4+SHIFT_MASK)");
   JButton buttonD = new JButton("WINDOW (" ")");
   Action actionListener = new AbstractAction() {
     public void actionPerformed(ActionEvent actionEvent) {
       JButton source = (JButton) actionEvent.getSource();
       System.out.println("Activated: " + source.getText());
     }
   };
   KeyStroke controlAlt7 = KeyStroke.getKeyStroke("control alt 7");
   InputMap inputMap = buttonA.getInputMap();
   inputMap.put(controlAlt7, ACTION_KEY);
   ActionMap actionMap = buttonA.getActionMap();
   actionMap.put(ACTION_KEY, actionListener);
   KeyStroke enter = KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0, true);
   inputMap = buttonB.getInputMap();
   inputMap.put(enter, ACTION_KEY);
   buttonB.setActionMap(actionMap);
   KeyStroke shiftF4 = KeyStroke.getKeyStroke(KeyEvent.VK_F4,
       InputEvent.SHIFT_MASK);
   inputMap = buttonC
       .getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
   inputMap.put(shiftF4, ACTION_KEY);
   buttonC.setActionMap(actionMap);
   KeyStroke space = KeyStroke.getKeyStroke(" ");
   inputMap = buttonD.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
   inputMap.put(space, ACTION_KEY);
   buttonD.setActionMap(actionMap);
   frame.setLayout(new GridLayout(2, 2));
   frame.add(buttonA);
   frame.add(buttonB);
   frame.add(buttonC);
   frame.add(buttonD);
   frame.setSize(400, 200);
   frame.setVisible(true);
 }

} 


      </source>



KeyStroke.getKeyStroke(KeyEvent.VK_P,InputEvent.CTRL_MASK)

   <source lang="java">

import java.awt.BorderLayout; import java.awt.ruponent; import java.awt.Graphics; import java.awt.event.ActionEvent; import java.awt.event.InputEvent; import java.awt.event.KeyEvent; import javax.swing.AbstractAction; import javax.swing.Action; import javax.swing.Icon; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.KeyStroke; public class MainClass { 

 public static void main(String args[]) {
   JFrame frame = new JFrame("Mnemonic/Accelerator Sample");
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   final Action printAction = new PrintHelloAction();
   JMenuBar menuBar = new JMenuBar();
   JMenu menu = new JMenu("File");
   menuBar.add(menu);
   JMenuItem menuItem = new JMenuItem("Print");
   KeyStroke ctrlP = KeyStroke.getKeyStroke(KeyEvent.VK_P,
       InputEvent.CTRL_MASK);
   menuItem.setAccelerator(ctrlP);
   menuItem.addActionListener(printAction);
   menu.add(menuItem);
   JButton fileButton = new JButton("About");
   fileButton.setMnemonic(KeyEvent.VK_A);
   fileButton.addActionListener(printAction);
   frame.setJMenuBar(menuBar);
   frame.add(fileButton, BorderLayout.SOUTH);
   frame.setSize(300, 100);
   frame.setVisible(true);
 }

} class PrintHelloAction extends AbstractAction { 

 private static final Icon printIcon = new MyIcon();
 PrintHelloAction() {
   super("Print", printIcon);
   putValue(Action.SHORT_DESCRIPTION, "Hello, World");
 }
 public void actionPerformed(ActionEvent actionEvent) {
   System.out.println("Hello, World");
 }

} class MyIcon implements Icon { 

 public int getIconWidth() {
   return 32;
 }
 public int getIconHeight() {
   return 32;
 }
 public void paintIcon(Component c, Graphics g, int x, int y) {
   g.drawString("jexp.ru", 0, 20);
 }

} 

      </source>



KeyStroke.getKeyStroke("N", Event.CTRL_MASK)

   <source lang="java">

import java.awt.Event; import javax.swing.ButtonGroup; import javax.swing.JCheckBoxMenuItem; import javax.swing.JFrame; import javax.swing.JMenu; import javax.swing.JMenuBar; import javax.swing.JMenuItem; import javax.swing.JRadioButtonMenuItem; import javax.swing.KeyStroke; public class MainClass extends JFrame { 

 public MainClass() {
   setDefaultCloseOperation(EXIT_ON_CLOSE);
   setJMenuBar(menuBar);
   JMenu fileMenu = new JMenu("File");
   JMenu elementMenu = new JMenu("Elements");
   fileMenu.setMnemonic("F");
   elementMenu.setMnemonic("E");
   // Construct the file pull down menu
   newItem = fileMenu.add("New");
   openItem = fileMenu.add("Open");
   closeItem = fileMenu.add("Close");
   fileMenu.addSeparator();
   saveItem = fileMenu.add("Save");
   saveAsItem = fileMenu.add("Save As...");
   JMenu colorMenu = new JMenu("Color");
   fileMenu.addSeparator();
   printItem = fileMenu.add("Print");
   newItem.setAccelerator(KeyStroke.getKeyStroke("N", Event.CTRL_MASK));
   openItem.setAccelerator(KeyStroke.getKeyStroke("O", Event.CTRL_MASK));
   saveItem.setAccelerator(KeyStroke.getKeyStroke("S", Event.CTRL_MASK));
   printItem.setAccelerator(KeyStroke.getKeyStroke("P", Event.CTRL_MASK));
   elementMenu.add(lineItem = new JRadioButtonMenuItem("Line", true));
   elementMenu
       .add(rectangleItem = new JRadioButtonMenuItem("Rectangle", false));
   elementMenu.add(circleItem = new JRadioButtonMenuItem("Circle", false));
   elementMenu.add(curveItem = new JRadioButtonMenuItem("Curve", false));
   ButtonGroup types = new ButtonGroup();
   types.add(lineItem);
   types.add(rectangleItem);
   types.add(circleItem);
   types.add(curveItem);
   lineItem.setAccelerator(KeyStroke.getKeyStroke("L", Event.CTRL_MASK));
   rectangleItem.setAccelerator(KeyStroke.getKeyStroke("E", Event.CTRL_MASK));
   circleItem.setAccelerator(KeyStroke.getKeyStroke("I", Event.CTRL_MASK));
   curveItem.setAccelerator(KeyStroke.getKeyStroke("V", Event.CTRL_MASK));
   elementMenu.addSeparator();
   elementMenu.add(colorMenu); // Add the sub-menu
   colorMenu.add(redItem = new JCheckBoxMenuItem("Red", false));
   colorMenu.add(yellowItem = new JCheckBoxMenuItem("Yellow", false));
   colorMenu.add(greenItem = new JCheckBoxMenuItem("Green", false));
   colorMenu.add(blueItem = new JCheckBoxMenuItem("Blue", true));
   // Add element color accelerators
   redItem.setAccelerator(KeyStroke.getKeyStroke("R", Event.CTRL_MASK));
   yellowItem.setAccelerator(KeyStroke.getKeyStroke("Y", Event.CTRL_MASK));
   greenItem.setAccelerator(KeyStroke.getKeyStroke("G", Event.CTRL_MASK));
   blueItem.setAccelerator(KeyStroke.getKeyStroke("B", Event.CTRL_MASK));
   menuBar.add(fileMenu);
   menuBar.add(elementMenu);
 }
 private JMenuBar menuBar = new JMenuBar();
 // File menu items
 private JMenuItem newItem, openItem, closeItem, saveItem, saveAsItem,
     printItem;
 // Element menu items
 private JRadioButtonMenuItem lineItem, rectangleItem, circleItem, curveItem,
     textItem;
 private JCheckBoxMenuItem redItem, yellowItem, greenItem, blueItem;
 public static void main(String[] args) {
   JFrame aWindow = new MainClass();
   aWindow.setSize(200,200);
   aWindow.setVisible(true);
 }

} 

      </source>
Источник — «http://jexp.ru/index.php?title=Java_by_API/javax.swing/KeyStroke&oldid=682»