Java by API/java.awt.event/InputEvent
Содержание
InputEvent.BUTTON1_MASK (mouse left button)
<source lang="java">
import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.InputEvent; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.SwingUtilities; public class MainClass {
public static void main(String args[]) { JFrame frame = new JFrame("Button Sample"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JButton button = new JButton("Select Me"); ActionListener actionListener = new ActionListener() { public void actionPerformed(ActionEvent actionEvent) { System.out.println("I was selected."); } }; MouseListener mouseListener = new MouseAdapter() { public void mousePressed(MouseEvent mouseEvent) { int modifiers = mouseEvent.getModifiers(); if ((modifiers & InputEvent.BUTTON1_MASK) == InputEvent.BUTTON1_MASK) { System.out.println("Left button pressed."); } if ((modifiers & InputEvent.BUTTON2_MASK) == InputEvent.BUTTON2_MASK) { System.out.println("Middle button pressed."); } if ((modifiers & InputEvent.BUTTON3_MASK) == InputEvent.BUTTON3_MASK) { System.out.println("Right button pressed."); } } public void mouseReleased(MouseEvent mouseEvent) { if (SwingUtilities.isLeftMouseButton(mouseEvent)) { System.out.println("Left button released."); } if (SwingUtilities.isMiddleMouseButton(mouseEvent)) { System.out.println("Middle button released."); } if (SwingUtilities.isRightMouseButton(mouseEvent)) { System.out.println("Right button released."); } System.out.println(); } }; button.addActionListener(actionListener); button.addMouseListener(mouseListener); frame.add(button, BorderLayout.SOUTH); frame.setSize(300, 100); frame.setVisible(true); }
}
</source>
InputEvent.BUTTON2_MASK (mouse middle button)
<source lang="java">
import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.InputEvent; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.SwingUtilities; public class MainClass {
public static void main(String args[]) { JFrame frame = new JFrame("Button Sample"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JButton button = new JButton("Select Me"); ActionListener actionListener = new ActionListener() { public void actionPerformed(ActionEvent actionEvent) { System.out.println("I was selected."); } }; MouseListener mouseListener = new MouseAdapter() { public void mousePressed(MouseEvent mouseEvent) { int modifiers = mouseEvent.getModifiers(); if ((modifiers & InputEvent.BUTTON1_MASK) == InputEvent.BUTTON1_MASK) { System.out.println("Left button pressed."); } if ((modifiers & InputEvent.BUTTON2_MASK) == InputEvent.BUTTON2_MASK) { System.out.println("Middle button pressed."); } if ((modifiers & InputEvent.BUTTON3_MASK) == InputEvent.BUTTON3_MASK) { System.out.println("Right button pressed."); } } public void mouseReleased(MouseEvent mouseEvent) { if (SwingUtilities.isLeftMouseButton(mouseEvent)) { System.out.println("Left button released."); } if (SwingUtilities.isMiddleMouseButton(mouseEvent)) { System.out.println("Middle button released."); } if (SwingUtilities.isRightMouseButton(mouseEvent)) { System.out.println("Right button released."); } System.out.println(); } }; button.addActionListener(actionListener); button.addMouseListener(mouseListener); frame.add(button, BorderLayout.SOUTH); frame.setSize(300, 100); frame.setVisible(true); }
}
</source>
InputEvent.BUTTON3_MASK (mouse right button)
<source lang="java">
import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.InputEvent; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.SwingUtilities; public class MainClass {
public static void main(String args[]) { JFrame frame = new JFrame("Button Sample"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); JButton button = new JButton("Select Me"); ActionListener actionListener = new ActionListener() { public void actionPerformed(ActionEvent actionEvent) { System.out.println("I was selected."); } }; MouseListener mouseListener = new MouseAdapter() { public void mousePressed(MouseEvent mouseEvent) { int modifiers = mouseEvent.getModifiers(); if ((modifiers & InputEvent.BUTTON1_MASK) == InputEvent.BUTTON1_MASK) { System.out.println("Left button pressed."); } if ((modifiers & InputEvent.BUTTON2_MASK) == InputEvent.BUTTON2_MASK) { System.out.println("Middle button pressed."); } if ((modifiers & InputEvent.BUTTON3_MASK) == InputEvent.BUTTON3_MASK) { System.out.println("Right button pressed."); } } public void mouseReleased(MouseEvent mouseEvent) { if (SwingUtilities.isLeftMouseButton(mouseEvent)) { System.out.println("Left button released."); } if (SwingUtilities.isMiddleMouseButton(mouseEvent)) { System.out.println("Middle button released."); } if (SwingUtilities.isRightMouseButton(mouseEvent)) { System.out.println("Right button released."); } System.out.println(); } }; button.addActionListener(actionListener); button.addMouseListener(mouseListener); frame.add(button, BorderLayout.SOUTH); frame.setSize(300, 100); frame.setVisible(true); }
}
</source>
InputEvent.CTRL_MASK
<source lang="java">
import java.awt.BorderLayout; import java.awt.event.ActionEvent; import java.awt.event.InputEvent; import java.awt.event.KeyEvent; import java.util.Hashtable; import javax.swing.Action; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTextArea; import javax.swing.KeyStroke; import javax.swing.text.BadLocationException; import javax.swing.text.DefaultEditorKit; import javax.swing.text.Document; import javax.swing.text.JTextComponent; import javax.swing.text.Keymap; import javax.swing.text.TextAction; import javax.swing.text.Utilities; public class Main {
public static void main(String[] args) { JTextArea area = new JTextArea(6, 32); Keymap parent = area.getKeymap(); Keymap newmap = JTextComponent.addKeymap("KeymapExampleMap", parent); KeyStroke u = KeyStroke.getKeyStroke(KeyEvent.VK_U, InputEvent.CTRL_MASK); Action actionU = new UpWord(); newmap.addActionForKeyStroke(u, actionU); Action actionList[] = area.getActions(); Hashtable lookup = new Hashtable(); for (int j = 0; j < actionList.length; j += 1) lookup.put(actionList[j].getValue(Action.NAME), actionList[j]); KeyStroke L = KeyStroke.getKeyStroke(KeyEvent.VK_L, InputEvent.CTRL_MASK); Action actionL = (Action) lookup.get(DefaultEditorKit.selectLineAction); newmap.addActionForKeyStroke(L, actionL); KeyStroke W = KeyStroke.getKeyStroke(KeyEvent.VK_W, InputEvent.CTRL_MASK); Action actionW = (Action) lookup.get(DefaultEditorKit.selectWordAction); newmap.addActionForKeyStroke(W, actionW); area.setKeymap(newmap); JFrame f = new JFrame("KeymapExample"); f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); f.getContentPane().add(new JScrollPane(area), BorderLayout.CENTER); area.setText("This is a test."); f.pack(); f.setVisible(true); }
} class UpWord extends TextAction {
public UpWord() { super("uppercase-word-action"); } public void actionPerformed(ActionEvent e) { JTextComponent comp = getTextComponent(e); if (comp == null) return; Document doc = comp.getDocument(); int start = comp.getSelectionStart(); int end = comp.getSelectionEnd(); try { int left = Utilities.getWordStart(comp, start); int right = Utilities.getWordEnd(comp, end); String word = doc.getText(left, right - left); doc.remove(left, right - left); doc.insertString(left, word.toUpperCase(), null); comp.setSelectionStart(start); comp.setSelectionEnd(end); } catch (BadLocationException ble) { return; } }
}
</source>
InputEvent: getModifiersExText(int modifiers)
<source lang="java">
/*
* Copyright (c) 1995 - 2008 Sun Microsystems, Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * - Neither the name of Sun Microsystems nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/*
* KeyEventDemo */
import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import java.awt.event.KeyListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTextArea; import javax.swing.JTextField; import javax.swing.UIManager; import javax.swing.UnsupportedLookAndFeelException; public class Main extends JFrame implements KeyListener, ActionListener {
JTextArea displayArea; JTextField typingArea; static final String newline = System.getProperty("line.separator"); public static void main(String[] args) { // Create and set up the window. Main frame = new Main(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // Set up the content pane. frame.addComponentsToPane(); // Display the window. frame.pack(); frame.setVisible(true); } private void addComponentsToPane() { JButton button = new JButton("Clear"); button.addActionListener(this); typingArea = new JTextField(20); typingArea.addKeyListener(this); // Uncomment this if you wish to turn off focus // traversal. The focus subsystem consumes // focus traversal keys, such as Tab and Shift Tab. // If you uncomment the following line of code, this // disables focus traversal and the Tab events will // become available to the key event listener. // typingArea.setFocusTraversalKeysEnabled(false); displayArea = new JTextArea(); displayArea.setEditable(false); JScrollPane scrollPane = new JScrollPane(displayArea); scrollPane.setPreferredSize(new Dimension(375, 125)); getContentPane().add(typingArea, BorderLayout.PAGE_START); getContentPane().add(scrollPane, BorderLayout.CENTER); getContentPane().add(button, BorderLayout.PAGE_END); }
/** Handle the key typed event from the text field. */ public void keyTyped(KeyEvent e) { displayInfo(e, "KEY TYPED: "); } /** Handle the key pressed event from the text field. */ public void keyPressed(KeyEvent e) { displayInfo(e, "KEY PRESSED: "); } /** Handle the key released event from the text field. */ public void keyReleased(KeyEvent e) { displayInfo(e, "KEY RELEASED: "); } /** Handle the button click. */ public void actionPerformed(ActionEvent e) { // Clear the text components. displayArea.setText(""); typingArea.setText(""); // Return the focus to the typing area. typingArea.requestFocusInWindow(); } /* * We have to jump through some hoops to avoid trying to print non-printing * characters such as Shift. (Not only do they not print, but if you put them * in a String, the characters afterward won"t show up in the text area.) */ private void displayInfo(KeyEvent e, String keyStatus) { // You should only rely on the key char if the event // is a key typed event. int id = e.getID(); String keyString; if (id == KeyEvent.KEY_TYPED) { char c = e.getKeyChar(); keyString = "key character = "" + c + """; } else { int keyCode = e.getKeyCode(); keyString = "key code = " + keyCode + " (" + KeyEvent.getKeyText(keyCode) + ")"; } int modifiersEx = e.getModifiersEx(); String modString = "extended modifiers = " + modifiersEx; String tmpString = KeyEvent.getModifiersExText(modifiersEx); if (tmpString.length() > 0) { modString += " (" + tmpString + ")"; } else { modString += " (no extended modifiers)"; } String actionString = "action key? "; if (e.isActionKey()) { actionString += "YES"; } else { actionString += "NO"; } String locationString = "key location: "; int location = e.getKeyLocation(); if (location == KeyEvent.KEY_LOCATION_STANDARD) { locationString += "standard"; } else if (location == KeyEvent.KEY_LOCATION_LEFT) { locationString += "left"; } else if (location == KeyEvent.KEY_LOCATION_RIGHT) { locationString += "right"; } else if (location == KeyEvent.KEY_LOCATION_NUMPAD) { locationString += "numpad"; } else { // (location == KeyEvent.KEY_LOCATION_UNKNOWN) locationString += "unknown"; } displayArea.append(keyStatus + newline + " " + keyString + newline + " " + modString + newline + " " + actionString + newline + " " + locationString + newline); displayArea.setCaretPosition(displayArea.getDocument().getLength()); }
}
</source>