Java Tutorial/SWT/CoolBar
Содержание
Add Button and Combo to a CoolBar
<source lang="java">
import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.rubo; import org.eclipse.swt.widgets.CoolBar; import org.eclipse.swt.widgets.CoolItem; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class CoolBarComboButton {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
CoolBar bar = new CoolBar(shell, SWT.BORDER);
CoolItem item = new CoolItem(bar, SWT.NONE);
Button button = new Button(bar, SWT.PUSH);
button.setText("Button ");
Point size = button.ruputeSize(SWT.DEFAULT, SWT.DEFAULT);
item.setPreferredSize(item.ruputeSize(size.x, size.y));
item.setControl(button);
item = new CoolItem(bar, SWT.NONE);
Combo combo = new Combo(bar, SWT.NONE);
size = combo.ruputeSize(SWT.DEFAULT, SWT.DEFAULT);
item.setPreferredSize(item.ruputeSize(size.x, size.y));
item.setControl(combo);
bar.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>
Add ToolBar to CoolBar
<source lang="java">
import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.widgets.ruposite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.CoolBar; import org.eclipse.swt.widgets.CoolItem; 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 CoolBarToolBar {
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
CoolBar coolBar = new CoolBar(shell, SWT.BORDER);
coolBar.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
final CoolItem item = new CoolItem(coolBar, SWT.DROP_DOWN);
item.setControl(createToolBar(coolBar));
Control control = item.getControl();
Point pt = control.ruputeSize(SWT.DEFAULT, SWT.DEFAULT);
pt = item.ruputeSize(pt.x, pt.y);
item.setSize(pt);
coolBar.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
private static Control createToolBar(Composite composite) {
ToolBar toolBar = new ToolBar(composite, SWT.NONE);
ToolItem item = new ToolItem(toolBar, SWT.PUSH);
item.setText("circle");
item = new ToolItem(toolBar, SWT.PUSH);
item.setText("square");
item = new ToolItem(toolBar, SWT.PUSH);
item.setText("star");
item = new ToolItem(toolBar, SWT.PUSH);
item.setText("triangle");
return toolBar;
}
}</source>
<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 *******************************************************************************/
/*
* CoolBar example snippet: drop-down a chevron menu containing hidden tool items * * 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.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.graphics.Rectangle; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.CoolBar; import org.eclipse.swt.widgets.CoolItem; 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 ChevronMenuHiddenToolItems {
static Display display;
static Shell shell;
static CoolBar coolBar;
static Menu chevronMenu = null;
public static void main(String[] args) {
display = new Display();
shell = new Shell(display);
shell.setLayout(new GridLayout());
coolBar = new CoolBar(shell, SWT.FLAT | SWT.BORDER);
coolBar.setLayoutData(new GridData(GridData.FILL_BOTH));
ToolBar toolBar = new ToolBar(coolBar, SWT.FLAT | SWT.WRAP);
int minWidth = 0;
for (int j = 0; j < 5; j++) {
int width = 0;
ToolItem item = new ToolItem(toolBar, SWT.PUSH);
item.setText("B" + j);
width = item.getWidth();
/* find the width of the widest tool */
if (width > minWidth)
minWidth = width;
}
CoolItem coolItem = new CoolItem(coolBar, SWT.DROP_DOWN);
coolItem.setControl(toolBar);
Point size = toolBar.ruputeSize(SWT.DEFAULT, SWT.DEFAULT);
Point coolSize = coolItem.ruputeSize(size.x, size.y);
coolItem.setMinimumSize(minWidth, coolSize.y);
coolItem.setPreferredSize(coolSize);
coolItem.setSize(coolSize);
coolItem.addSelectionListener(new SelectionAdapter() {
public void widgetSelected(SelectionEvent event) {
if (event.detail == SWT.ARROW) {
CoolItem item = (CoolItem) event.widget;
Rectangle itemBounds = item.getBounds();
Point pt = coolBar.toDisplay(new Point(itemBounds.x, itemBounds.y));
itemBounds.x = pt.x;
itemBounds.y = pt.y;
ToolBar bar = (ToolBar) item.getControl();
ToolItem[] tools = bar.getItems();
int i = 0;
while (i < tools.length) {
Rectangle toolBounds = tools[i].getBounds();
pt = bar.toDisplay(new Point(toolBounds.x, toolBounds.y));
toolBounds.x = pt.x;
toolBounds.y = pt.y;
/*
* Figure out the visible portion of the tool by looking at the
* intersection of the tool bounds with the cool item bounds.
*/
Rectangle intersection = itemBounds.intersection(toolBounds);
/*
* If the tool is not completely within the cool item bounds, then
* it is partially hidden, and all remaining tools are completely
* hidden.
*/
if (!intersection.equals(toolBounds))
break;
i++;
}
/* Create a menu with items for each of the completely hidden buttons. */
if (chevronMenu != null)
chevronMenu.dispose();
chevronMenu = new Menu(coolBar);
for (int j = i; j < tools.length; j++) {
MenuItem menuItem = new MenuItem(chevronMenu, SWT.PUSH);
menuItem.setText(tools[j].getText());
}
/* Drop down the menu below the chevron, with the left edges aligned. */
pt = coolBar.toDisplay(new Point(event.x, event.y));
chevronMenu.setLocation(pt.x, pt.y);
chevronMenu.setVisible(true);
}
}
});
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>
Create a coolbar (relayout when resized)
<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 *******************************************************************************/
/*
* CoolBar example snippet: create a coolbar (relayout when resized) * * For a list of all SWT example snippets see * http://www.eclipse.org/swt/snippets/ * * @since 3.0 */
import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Point; import org.eclipse.swt.layout.FormAttachment; import org.eclipse.swt.layout.FormData; import org.eclipse.swt.layout.FormLayout; import org.eclipse.swt.widgets.CoolBar; import org.eclipse.swt.widgets.CoolItem; 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.Text; import org.eclipse.swt.widgets.ToolBar; import org.eclipse.swt.widgets.ToolItem; public class CoolBarRelayoutResize {
static int itemCount;
static CoolItem createItem(CoolBar coolBar, int count) {
ToolBar toolBar = new ToolBar(coolBar, SWT.FLAT);
for (int i = 0; i < count; i++) {
ToolItem item = new ToolItem(toolBar, SWT.PUSH);
item.setText(itemCount++ + "");
}
toolBar.pack();
Point size = toolBar.getSize();
CoolItem item = new CoolItem(coolBar, SWT.NONE);
item.setControl(toolBar);
Point preferred = item.ruputeSize(size.x, size.y);
item.setPreferredSize(preferred);
return item;
}
public static void main(String[] args) {
Display display = new Display();
final Shell shell = new Shell(display);
CoolBar coolBar = new CoolBar(shell, SWT.NONE);
createItem(coolBar, 3);
createItem(coolBar, 2);
createItem(coolBar, 3);
createItem(coolBar, 4);
int style = SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL;
Text text = new Text(shell, style);
FormLayout layout = new FormLayout();
shell.setLayout(layout);
FormData coolData = new FormData();
coolData.left = new FormAttachment(0);
coolData.right = new FormAttachment(100);
coolData.top = new FormAttachment(0);
coolBar.setLayoutData(coolData);
coolBar.addListener(SWT.Resize, new Listener() {
public void handleEvent(Event event) {
shell.layout();
}
});
FormData textData = new FormData();
textData.left = new FormAttachment(0);
textData.right = new FormAttachment(100);
textData.top = new FormAttachment(coolBar);
textData.bottom = new FormAttachment(100);
text.setLayoutData(textData);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}</source>
Creating Coolbars
SWT uses two classes to implement coolbars: CoolBar and CoolItem. You must size the CoolItem yourself, or it won"t be sized properly.
