| /******************************************************************************* |
| * Copyright (c) 2003, 2005 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.jst.server.ui.internal; |
| |
| import org.eclipse.jface.dialogs.Dialog; |
| import org.eclipse.jface.dialogs.IDialogConstants; |
| import org.eclipse.jface.resource.JFaceResources; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.graphics.FontMetrics; |
| import org.eclipse.swt.graphics.GC; |
| import org.eclipse.swt.layout.GridData; |
| import org.eclipse.swt.widgets.Button; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Control; |
| /** |
| * SWT Utility class. |
| */ |
| public class SWTUtil { |
| private static FontMetrics fontMetrics; |
| |
| protected static void initializeDialogUnits(Control testControl) { |
| // Compute and store a font metric |
| GC gc = new GC(testControl); |
| gc.setFont(JFaceResources.getDialogFont()); |
| fontMetrics = gc.getFontMetrics(); |
| gc.dispose(); |
| } |
| |
| /** |
| * Returns a width hint for a button control. |
| */ |
| protected static int getButtonWidthHint(Button button) { |
| int widthHint = Dialog.convertHorizontalDLUsToPixels(fontMetrics, IDialogConstants.BUTTON_WIDTH); |
| return Math.max(widthHint, button.computeSize(SWT.DEFAULT, SWT.DEFAULT, true).x); |
| } |
| |
| /** |
| * Create a new button with the standard size. |
| * |
| * @param comp the component to add the button to |
| * @param label the button label |
| * @return a button |
| */ |
| public static Button createButton(Composite comp, String label) { |
| Button b = new Button(comp, SWT.PUSH); |
| b.setText(label); |
| if (fontMetrics == null) |
| initializeDialogUnits(comp); |
| GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL); |
| data.widthHint = getButtonWidthHint(b); |
| b.setLayoutData(data); |
| return b; |
| } |
| } |