в 17:44, 31 мая 2010

2010-05-31T17:44:26Z

Admin: 1 версия

2010-05-31T15:20:26Z

1 версия

Новая страница

== Add check buttons to ToolBar ==



<source lang="java">
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
public class ToolItemCheckBox{
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
ToolBar bar = new ToolBar(shell, SWT.BORDER|SWT.VERTICAL);
for (int i = 0; i < 4; i++) {
ToolItem item = new ToolItem(bar, SWT.CHECK);
item.setText("Item " + i);
}
bar.pack();
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>



== Add image to ToolItem ==



<source lang="java">
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
public class ToolItemImage {
public static void main(String[] args) {
Display display = new Display();
Image image = new Image(display, "yourFile.gif");
Shell shell = new Shell(display);
ToolBar toolBar = new ToolBar(shell, SWT.FLAT | SWT.BORDER);
for (int i = 0; i < 12; i++) {
ToolItem item = new ToolItem(toolBar, SWT.DROP_DOWN);
item.setImage(image);
}
toolBar.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
image.dispose();
display.dispose();
}
}</source>



== Add radio buttons to ToolBar ==



<source lang="java">
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
public class ToolItemRadioButton {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
ToolBar bar = new ToolBar(shell, SWT.BORDER|SWT.VERTICAL);
for (int i = 0; i < 4; i++) {
ToolItem item = new ToolItem(bar, SWT.RADIO);
item.setText("Item " + i);
}
bar.pack();
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>



== Add SelectionListener to ToolItem ==



<source lang="java">
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
public class ToolItemSelectionListenerAdding {
public static void main(String[] args) {
Display display = new Display();
final Shell shell = new Shell(display);
GridLayout gridLayout = new GridLayout();
gridLayout.numColumns = 3;
shell.setLayout(gridLayout);
ToolBar toolbar = new ToolBar(shell, SWT.NONE);
ToolItem itemBack = new ToolItem(toolbar, SWT.PUSH);
itemBack.setText("Back");
ToolItem itemForward = new ToolItem(toolbar, SWT.PUSH);
itemForward.setText("Forward");
ToolItem itemStop = new ToolItem(toolbar, SWT.PUSH);
itemStop.setText("Stop");
ToolItem itemRefresh = new ToolItem(toolbar, SWT.PUSH);
itemRefresh.setText("Refresh");
ToolItem itemGo = new ToolItem(toolbar, SWT.PUSH);
itemGo.setText("Go");
GridData data = new GridData();
data.horizontalSpan = 3;
toolbar.setLayoutData(data);
Listener listener = new Listener() {
public void handleEvent(Event event) {
ToolItem item = (ToolItem) event.widget;
String string = item.getText();
if (string.equals("Back"))
System.out.println("Back");
else if (string.equals("Forward"))
System.out.println("Forward");
else if (string.equals("Stop"))
System.out.println("Stop");
else if (string.equals("Refresh"))
System.out.println("Refresh");
else if (string.equals("Go"))
System.out.println("Go");
}
};
itemBack.addListener(SWT.Selection, listener);
itemForward.addListener(SWT.Selection, listener);
itemStop.addListener(SWT.Selection, listener);
itemRefresh.addListener(SWT.Selection, listener);
itemGo.addListener(SWT.Selection, listener);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>



== Add ToolItem to ToolBar ==



<source lang="java">
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
public class ToolBarToolItemAdd {
public static void main(String[] args) {
Shell shell = new Shell();
ToolBar bar = new ToolBar(shell, SWT.BORDER);
for (int i = 0; i < 8; i++) {
ToolItem item = new ToolItem(bar, SWT.PUSH);
item.setText("Item " + i);
}
bar.pack();
shell.open();
Display display = shell.getDisplay();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>



== Constants for Creating Tool Items ==

ConstantDescriptionSWT.CHECKCreates a stateful push button ("toggle" button).SWT.DROP_DOWNCreates a dropdown.SWT.PUSHCreates a traditional push button.SWT.RADIOCreates a grouped stateful push button (only one in the group may be selected at a time).SWT.SEPARATORCreates a separator.

== Create a push button ==



<source lang="java">
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
public class ToolItemButtonPush{
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
ToolBar bar = new ToolBar(shell, SWT.BORDER|SWT.VERTICAL);
for (int i = 0; i < 4; i++) {
ToolItem item = new ToolItem(bar, SWT.PUSH);
item.setText("Item " + i);
}
bar.pack();
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>



== Creating Radio Groups ==

<p>To create more than one group of radio buttons in the same toolbar, separate each group using a separator.</p>



<source lang="java">
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
public class ToolItemRadioGroups {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
ToolBar toolBar = new ToolBar(shell, SWT.BORDER | SWT.VERTICAL);
ToolItem item = new ToolItem(toolBar, SWT.RADIO);
item.setText("One");
item = new ToolItem(toolBar, SWT.RADIO);
item.setText("Two");
item = new ToolItem(toolBar, SWT.RADIO);
item.setText("Three");
new ToolItem(toolBar, SWT.SEPARATOR); // Signals end of group
item = new ToolItem(toolBar, SWT.RADIO);
item.setText("One");
item = new ToolItem(toolBar, SWT.RADIO);
item.setText("Two");
item = new ToolItem(toolBar, SWT.RADIO);
item.setText("Three");
toolBar.pack();
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>



== Two dropdowns ==



<source lang="java">
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
public class ToolItemDropDown {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
ToolBar bar = new ToolBar(shell, SWT.BORDER|SWT.VERTICAL);
for (int i = 0; i < 4; i++) {
ToolItem item = new ToolItem(bar, SWT.DROP_DOWN);
item.setText("asdf");
}
bar.pack();
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>



== Update a status line when the pointer enters a ToolItem ==



<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
*******************************************************************************/
//package org.eclipse.swt.snippets;
/*
* ToolBar example snippet: update a status line when the pointer enters a ToolItem
*
* For a list of all SWT example snippets see
* http://www.eclipse.org/swt/snippets/
*/
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.MouseEvent;
import org.eclipse.swt.events.MouseMoveListener;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
public class ToolItemStatusLine {
static String statusText = "";
public static void main(String[] args) {
final Display display = new Display();
Shell shell = new Shell(display);
shell.setBounds(10, 10, 200, 200);
final ToolBar bar = new ToolBar(shell, SWT.BORDER);
bar.setBounds(10, 10, 150, 50);
final Label statusLine = new Label(shell, SWT.BORDER);
statusLine.setBounds(10, 90, 150, 30);
new ToolItem(bar, SWT.NONE).setText("item 1");
new ToolItem(bar, SWT.NONE).setText("item 2");
new ToolItem(bar, SWT.NONE).setText("item 3");
bar.addMouseMoveListener(new MouseMoveListener() {
public void mouseMove(MouseEvent e) {
ToolItem item = bar.getItem(new Point(e.x, e.y));
String name = "";
if (item != null) {
name = item.getText();
}
if (!statusText.equals(name)) {
statusLine.setText(name);
statusText = name;
}
}
});
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>



== Working with Dropdowns ==

<p>To provide Combo-like functionality to a dropdown tool item:</p>



<source lang="java">
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.ToolBar;
import org.eclipse.swt.widgets.ToolItem;
public class ToolItemDropDownMenu {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
ToolBar toolBar = new ToolBar(shell, SWT.BORDER | SWT.VERTICAL);
ToolItem item = new ToolItem(toolBar, SWT.DROP_DOWN);
item.setText("One");
DropdownSelectionListener listenerOne = new DropdownSelectionListener(item);
listenerOne.add("Option One for One");
listenerOne.add("Option Two for One");
listenerOne.add("Option Three for One");
item.addSelectionListener(listenerOne);
toolBar.pack();
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
class DropdownSelectionListener extends SelectionAdapter {
private ToolItem dropdown;
private Menu menu;
public DropdownSelectionListener(ToolItem dropdown) {
this.dropdown = dropdown;
menu = new Menu(dropdown.getParent().getShell());
}
public void add(String item) {
MenuItem menuItem = new MenuItem(menu, SWT.NONE);
menuItem.setText(item);
menuItem.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
MenuItem selected = (MenuItem) event.widget;
dropdown.setText(selected.getText());
}
});
}
public void widgetSelected(SelectionEvent event) {
if (event.detail == SWT.ARROW) {
ToolItem item = (ToolItem) event.widget;
Rectangle rect = item.getBounds();
Point pt = item.getParent().toDisplay(new Point(rect.x, rect.y));
menu.setLocation(pt.x, pt.y + rect.height);
menu.setVisible(true);
} else {
System.out.println(dropdown.getText() + " Pressed");
}
}
}</source>

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

Java Tutorial/SWT/ToolItem - История изменений

в 17:44, 31 мая 2010

Admin: 1 версия