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/*******************************************************************************
* Copyright (c) 2000, 2016 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.snippets;
/*
* Control example snippet: print key state, code and character
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*
* @since 3.0
*/
import org.eclipse.swt.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;
public class Snippet25 {
static String stateMask (int stateMask) {
String string = "";
if ((stateMask & SWT.CTRL) != 0) string += " CTRL";
if ((stateMask & SWT.ALT) != 0) string += " ALT";
if ((stateMask & SWT.SHIFT) != 0) string += " SHIFT";
if ((stateMask & SWT.COMMAND) != 0) string += " COMMAND";
return string;
}
static String character (char character) {
switch (character) {
case 0: return "'\\0'";
case SWT.BS: return "'\\b'";
case SWT.CR: return "'\\r'";
case SWT.DEL: return "DEL";
case SWT.ESC: return "ESC";
case SWT.LF: return "'\\n'";
case SWT.TAB: return "'\\t'";
}
return "'" + character +"'";
}
static String keyCode (int keyCode) {
switch (keyCode) {
/* Keyboard and Mouse Masks */
case SWT.ALT: return "ALT";
case SWT.SHIFT: return "SHIFT";
case SWT.CONTROL: return "CONTROL";
case SWT.COMMAND: return "COMMAND";
/* Non-Numeric Keypad Keys */
case SWT.ARROW_UP: return "ARROW_UP";
case SWT.ARROW_DOWN: return "ARROW_DOWN";
case SWT.ARROW_LEFT: return "ARROW_LEFT";
case SWT.ARROW_RIGHT: return "ARROW_RIGHT";
case SWT.PAGE_UP: return "PAGE_UP";
case SWT.PAGE_DOWN: return "PAGE_DOWN";
case SWT.HOME: return "HOME";
case SWT.END: return "END";
case SWT.INSERT: return "INSERT";
/* Virtual and Ascii Keys */
case SWT.BS: return "BS";
case SWT.CR: return "CR";
case SWT.DEL: return "DEL";
case SWT.ESC: return "ESC";
case SWT.LF: return "LF";
case SWT.TAB: return "TAB";
case SWT.SPACE: return "SPACE";
/* Functions Keys */
case SWT.F1: return "F1";
case SWT.F2: return "F2";
case SWT.F3: return "F3";
case SWT.F4: return "F4";
case SWT.F5: return "F5";
case SWT.F6: return "F6";
case SWT.F7: return "F7";
case SWT.F8: return "F8";
case SWT.F9: return "F9";
case SWT.F10: return "F10";
case SWT.F11: return "F11";
case SWT.F12: return "F12";
case SWT.F13: return "F13";
case SWT.F14: return "F14";
case SWT.F15: return "F15";
/* Numeric Keypad Keys */
case SWT.KEYPAD_ADD: return "KEYPAD_ADD";
case SWT.KEYPAD_SUBTRACT: return "KEYPAD_SUBTRACT";
case SWT.KEYPAD_MULTIPLY: return "KEYPAD_MULTIPLY";
case SWT.KEYPAD_DIVIDE: return "KEYPAD_DIVIDE";
case SWT.KEYPAD_DECIMAL: return "KEYPAD_DECIMAL";
case SWT.KEYPAD_CR: return "KEYPAD_CR";
case SWT.KEYPAD_0: return "KEYPAD_0";
case SWT.KEYPAD_1: return "KEYPAD_1";
case SWT.KEYPAD_2: return "KEYPAD_2";
case SWT.KEYPAD_3: return "KEYPAD_3";
case SWT.KEYPAD_4: return "KEYPAD_4";
case SWT.KEYPAD_5: return "KEYPAD_5";
case SWT.KEYPAD_6: return "KEYPAD_6";
case SWT.KEYPAD_7: return "KEYPAD_7";
case SWT.KEYPAD_8: return "KEYPAD_8";
case SWT.KEYPAD_9: return "KEYPAD_9";
case SWT.KEYPAD_EQUAL: return "KEYPAD_EQUAL";
/* Other keys */
case SWT.CAPS_LOCK: return "CAPS_LOCK";
case SWT.NUM_LOCK: return "NUM_LOCK";
case SWT.SCROLL_LOCK: return "SCROLL_LOCK";
case SWT.PAUSE: return "PAUSE";
case SWT.BREAK: return "BREAK";
case SWT.PRINT_SCREEN: return "PRINT_SCREEN";
case SWT.HELP: return "HELP";
}
return character ((char) keyCode);
}
public static void main (String [] args) {
Display display = new Display ();
Shell shell = new Shell (display);
shell.setText("Snippet 25");
Listener listener = e -> {
String string = e.type == SWT.KeyDown ? "DOWN:" : "UP :";
string += " stateMask=0x" + Integer.toHexString (e.stateMask) + stateMask (e.stateMask) + ",";
string += " keyCode=0x" + Integer.toHexString (e.keyCode) + " " + keyCode (e.keyCode) + ",";
string += " character=0x" + Integer.toHexString (e.character) + " " + character (e.character);
if (e.keyLocation != 0) {
string += " location=";
if (e.keyLocation == SWT.LEFT) string += "LEFT";
if (e.keyLocation == SWT.RIGHT) string += "RIGHT";
if (e.keyLocation == SWT.KEYPAD) string += "KEYPAD";
}
System.out.println (string);
};
shell.addListener (SWT.KeyDown, listener);
shell.addListener (SWT.KeyUp, listener);
shell.setLayout(new FillLayout());
shell.setSize (200, 200);
Label label = new Label(shell, SWT.WRAP);
label.setText("Start typing to see key state, code and character in console.");
shell.open ();
while (!shell.isDisposed ()) {
if (!display.readAndDispatch ()) display.sleep ();
}
display.dispose ();
}
}
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