| /******************************************************************************* |
| * Copyright (c) 2000, 2007 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; |
| |
| /* |
| * Table example snippet: compute the visible rows in a table |
| * |
| * For a list of all SWT example snippets see |
| * http://www.eclipse.org/swt/snippets/ |
| */ |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.widgets.*; |
| import org.eclipse.swt.layout.*; |
| |
| public class Snippet253 { |
| public static void main(String[] args) { |
| final Display display = new Display(); |
| final Shell shell = new Shell(display); |
| FillLayout layout = new FillLayout (SWT.VERTICAL); |
| shell.setLayout (layout); |
| final Table table = new Table (shell, SWT.NONE); |
| for (int i=0; i<32; i++) { |
| TableItem item = new TableItem (table, SWT.NONE); |
| item.setText ("Item " + (i+1) + " is quite long"); |
| } |
| final Button button = new Button (shell, SWT.PUSH); |
| button.setText ("Visible Items []"); |
| button.addListener (SWT.Selection, new Listener () { |
| public void handleEvent (Event e) { |
| Rectangle rect = table.getClientArea (); |
| int itemHeight = table.getItemHeight (); |
| int headerHeight = table.getHeaderHeight (); |
| int visibleCount = (rect.height - headerHeight + itemHeight - 1) / itemHeight; |
| button.setText ("Visible Items [" + visibleCount + "]"); |
| } |
| }); |
| shell.setSize(200, 250); |
| shell.open(); |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch()) display.sleep(); |
| } |
| display.dispose(); |
| } |
| } |