в 17:44, 31 мая 2010

2010-05-31T17:44:26Z

Admin: 1 версия

2010-05-31T15:21:17Z

1 версия

Новая страница

== Add Mouse Down, Up and Move event ==



<source lang="java">
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
public class MouseEventDownUpMove {
public static void main(String[] args) {
Display display = new Display();
final Shell shell = new Shell(display);
Listener listener = new Listener() {
public void handleEvent(Event event) {
switch (event.type) {
case SWT.MouseDown:
System.out.println("down:" + event);
break;
case SWT.MouseMove:
System.out.println("move:"+event);
break;
case SWT.MouseUp:
System.out.println("Up:"+event);
break;
}
}
};
shell.addListener(SWT.MouseDown, listener);
shell.addListener(SWT.MouseUp, listener);
shell.addListener(SWT.MouseMove, listener);
shell.setSize(300, 300);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>



== Composite: intercept mouse events (drag a button with the mouse) ==



<source lang="java">
/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
/*
* Composite example snippet: intercept mouse events (drag a button with the mouse)
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*/
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.ruposite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
public class DragButtonMouseEvents {
public static void main(String[] args) {
Display display = new Display();
final Shell shell = new Shell(display);
final Composite composite = new Composite(shell, SWT.NONE);
composite.setEnabled(false);
composite.setLayout(new FillLayout());
Button button = new Button(composite, SWT.PUSH);
button.setText("Button");
composite.pack();
composite.setLocation(10, 10);
final Point[] offset = new Point[1];
Listener listener = new Listener() {
public void handleEvent(Event event) {
switch (event.type) {
case SWT.MouseDown:
Rectangle rect = composite.getBounds();
if (rect.contains(event.x, event.y)) {
Point pt1 = composite.toDisplay(0, 0);
Point pt2 = shell.toDisplay(event.x, event.y);
offset[0] = new Point(pt2.x - pt1.x, pt2.y - pt1.y);
}
break;
case SWT.MouseMove:
if (offset[0] != null) {
Point pt = offset[0];
composite.setLocation(event.x - pt.x, event.y - pt.y);
}
break;
case SWT.MouseUp:
offset[0] = null;
break;
}
}
};
shell.addListener(SWT.MouseDown, listener);
shell.addListener(SWT.MouseUp, listener);
shell.addListener(SWT.MouseMove, listener);
shell.setSize(300, 300);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>



== Detect mouse enter, exit and hover events ==



<source lang="java">
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
public class MouseEventEnterExit {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setSize(100, 100);
shell.addListener(SWT.MouseEnter, new Listener() {
public void handleEvent(Event e) {
System.out.println("ENTER");
}
});
shell.addListener(SWT.MouseExit, new Listener() {
public void handleEvent(Event e) {
System.out.println("EXIT");
}
});
shell.addListener(SWT.MouseHover, new Listener() {
public void handleEvent(Event e) {
System.out.println("HOVER");
}
});
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>



== extends MouseTrackAdapter ==



<source lang="java">
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseTrackAdapter;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
public class MouseTrackAdapter {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
Label label = new Label(shell, SWT.SHADOW_IN | SWT.CENTER);
shell.setLayout(new GridLayout());
MouseTrackAdapter listener = new MouseEnterExitListener();
label.setText("Point your cursor here ...");
label.setBounds(30, 30, 200, 30);
label.addMouseTrackListener(listener);
shell.setSize(260, 120);
shell.open();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
}
}
class MouseEnterExitListener extends MouseTrackAdapter {
public void mouseEnter(MouseEvent e) {
System.out.println("Cursor enters the label");
}
public void mouseExit(MouseEvent arg0) {
System.out.println("Cursor leaves the label");
}
}</source>



== Print mouse state and button (down, move, up) ==



<source lang="java">
/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
/*
* Control example snippet: print mouse state and button (down, move, up)
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*
* @since 3.1
*/
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
public class MouseButtonState {
public static void main(String[] args) {
Display display = new Display();
final Shell shell = new Shell(display);
Listener listener = new Listener() {
public void handleEvent(Event e) {
String string = "Unknown";
switch (e.type) {
case SWT.MouseDown:
string = "DOWN";
break;
case SWT.MouseMove:
string = "MOVE";
break;
case SWT.MouseUp:
string = "UP";
break;
}
string += ": button: " + e.button + ", ";
string += "stateMask=0x" + Integer.toHexString(e.stateMask);
if ((e.stateMask & SWT.BUTTON1) != 0)
string += " BUTTON1";
if ((e.stateMask & SWT.BUTTON2) != 0)
string += " BUTTON2";
if ((e.stateMask & SWT.BUTTON3) != 0)
string += " BUTTON3";
if ((e.stateMask & SWT.BUTTON4) != 0)
string += " BUTTON4";
if ((e.stateMask & SWT.BUTTON5) != 0)
string += " BUTTON5";
System.out.println(string);
}
};
shell.addListener(SWT.MouseDown, listener);
shell.addListener(SWT.MouseMove, listener);
shell.addListener(SWT.MouseUp, listener);
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>



== Using MouseListener ==



<source lang="java">
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseListener;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class MouseListenerUsing {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new RowLayout());
shell.addMouseListener(new MouseListener() {
public void mouseDoubleClick(MouseEvent arg0) {
System.out.println("mouseDoubleClick");
}
public void mouseDown(MouseEvent arg0) {
System.out.println("mouseDown");
}
public void mouseUp(MouseEvent arg0) {
System.out.println("mouseUp");
}
});
// Display the window
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
}</source>



== Using MouseListener, MouseMoveListener, and MouseTrackListener ==

<OL><LI>SWT divides mouse-related activity into three separate listener interfaces.</LI><LI>MouseListener interface receives notification of mouse click events.</LI><LI>MouseTrackListener receives notification when the mouse enters, exits, or hovers over the associated widget.</LI><LI>MouseMoveListener receives notification each time the mouse moves.</LI></OL>

== Using MouseMoveListener ==



<source lang="java">
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseMoveListener;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class MouseMoveListenerUsing {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new RowLayout());
shell.addMouseMoveListener(new MouseMoveListener() {
public void mouseMove(MouseEvent arg0) {
System.out.println(arg0.x);
}
});
// Display the window
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
}</source>



== Using MouseTrackListener ==



<source lang="java">
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseTrackListener;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class MouseTrackListenerUsing {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new RowLayout());
shell.addMouseTrackListener(new MouseTrackListener() {
public void mouseEnter(MouseEvent arg0) {
System.out.println("mouseEnter");
}
public void mouseExit(MouseEvent arg0) {
System.out.println("mouseExit");
}
public void mouseHover(MouseEvent arg0) {
System.out.println("mouseHover");
}
});
// Display the window
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
}</source>

← Предыдущая	Версия 17:44, 31 мая 2010
(нет различий)

Java Tutorial/SWT/MouseEvent - История изменений

в 17:44, 31 мая 2010

Admin: 1 версия