| /******************************************************************************* |
| * Copyright (c) 2018 Red Hat 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: |
| * Red Hat - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.tests.gtk.snippets; |
| |
| |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.custom.StackLayout; |
| import org.eclipse.swt.events.SelectionAdapter; |
| import org.eclipse.swt.events.SelectionEvent; |
| import org.eclipse.swt.layout.FillLayout; |
| import org.eclipse.swt.layout.GridData; |
| import org.eclipse.swt.layout.GridLayout; |
| import org.eclipse.swt.widgets.Button; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.swt.widgets.Table; |
| import org.eclipse.swt.widgets.TableColumn; |
| import org.eclipse.swt.widgets.TableItem; |
| |
| public class Bug71990_SlowTablePack { |
| |
| public static void main(String[] args) { |
| Display display = new Display(); |
| Shell shell = new Shell(display); |
| shell.setLayout(new GridLayout()); |
| |
| long start = System.currentTimeMillis(); |
| |
| final Composite parent = new Composite(shell, SWT.NONE); |
| parent.setLayout(new FillLayout()); |
| parent.setLayoutData(new GridData(GridData.FILL_BOTH)); |
| final StackLayout layout = new StackLayout(); |
| parent.setLayout(layout); |
| |
| final Composite c1 = new Composite(parent, SWT.NONE); |
| c1.setLayout(new FillLayout()); |
| final Composite c2 = new Composite(parent, SWT.NONE); |
| c2.setLayout(new FillLayout()); |
| |
| final Button button = new Button(shell, SWT.NONE); |
| button.setLayoutData(new GridData(GridData.FILL_HORIZONTAL)); |
| button.setText("Switch"); |
| |
| final Table t1 = makeTable(c1); |
| final Table t2 = makeTable(c2); |
| |
| button.addSelectionListener(new SelectionAdapter() { |
| @Override |
| public void widgetSelected(SelectionEvent e) { |
| long st = System.currentTimeMillis(); |
| |
| if (layout.topControl == c1) { |
| layout.topControl = c2; |
| makeColumns(t2, false); |
| } else { |
| layout.topControl = c1; |
| makeColumns(t1, false); |
| } |
| |
| parent.layout(); |
| |
| System.out.println("Layout: " |
| + (System.currentTimeMillis() - st)); |
| |
| } |
| }); |
| |
| layout.topControl = c1; |
| |
| long packTime = System.currentTimeMillis(); |
| |
| shell.pack(); |
| shell.setSize(400, 400); |
| shell.open(); |
| |
| System.out.println("Pack: " + (System.currentTimeMillis() - packTime)); |
| |
| System.out.println("Finish: " + (System.currentTimeMillis() - start)); |
| while (!shell.isDisposed()) { |
| if (!display.readAndDispatch()) |
| display.sleep(); |
| } |
| display.dispose(); |
| } |
| |
| public static Table makeTable(Composite parent) { |
| Table table = new Table(parent, SWT.MULTI | SWT.BORDER |
| | SWT.FULL_SELECTION); |
| table.setLinesVisible(true); |
| table.setHeaderVisible(true); |
| String[] titles = { " ", "C", "!", "Description", "Resource", |
| "In Folder", "Location" }; |
| for (int i = 0; i < titles.length; i++) { |
| TableColumn column = new TableColumn(table, SWT.NULL); |
| column.setText(titles[i]); |
| } |
| makeColumns(table, true); |
| table.pack(); |
| return table; |
| } |
| |
| public static void makeColumns(Table table, boolean pack) { |
| int count = 1024; |
| |
| long time = System.currentTimeMillis(); |
| |
| table.removeAll(); |
| |
| System.out.println("Time RemoveAll: " |
| + (System.currentTimeMillis() - time)); |
| |
| long time0 = System.currentTimeMillis(); |
| |
| for (int i = 0; i < count; i++) { |
| TableItem item = new TableItem(table, SWT.NULL); |
| item.setText(0, "x"); |
| item.setText(1, "y"); |
| item.setText(2, "!"); |
| item.setText(3, "this stuff behaves the way I expect"); |
| item.setText(4, "almost everywhere"); |
| item.setText(5, "some.folder"); |
| item.setText(6, "line " + i + " in nowhere"); |
| } |
| |
| long time1 = System.currentTimeMillis(); |
| |
| System.out.println("Time add Items: " + (time1 - time0)); |
| |
| if (pack) { |
| for (int i = 0; i < table.getColumnCount(); i++) |
| table.getColumn(i).pack(); |
| long time2 = System.currentTimeMillis(); |
| System.out.println("Time column pack: " + (time2 - time1)); |
| } |
| |
| } |
| } |