| /******************************************************************************* |
| * Copyright (c) 2000, 2016 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 |
| * Lars Vogel <Lars.Vogel@vogella.com> - Bug 502845 |
| *******************************************************************************/ |
| package org.eclipse.swt.snippets; |
| |
| |
| /* |
| * 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 static org.eclipse.swt.events.SelectionListener.*; |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.layout.*; |
| import org.eclipse.swt.widgets.*; |
| |
| public class Snippet140 { |
| 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.computeSize(SWT.DEFAULT, SWT.DEFAULT); |
| Point coolSize = coolItem.computeSize (size.x, size.y); |
| coolItem.setMinimumSize(minWidth, coolSize.y); |
| coolItem.setPreferredSize(coolSize); |
| coolItem.setSize(coolSize); |
| coolItem.addSelectionListener(widgetSelectedAdapter(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 (); |
| } |
| } |