| /******************************************************************************* |
| * Copyright (c) 2006 The Regents of the University of California. |
| * This material was produced under U.S. Government contract W-7405-ENG-36 |
| * for Los Alamos National Laboratory, which is operated by the University |
| * of California for the U.S. Department of Energy. The U.S. Government has |
| * rights to use, reproduce, and distribute this software. NEITHER THE |
| * GOVERNMENT NOR THE UNIVERSITY MAKES ANY WARRANTY, EXPRESS OR IMPLIED, OR |
| * ASSUMES ANY LIABILITY FOR THE USE OF THIS SOFTWARE. If software is modified |
| * to produce derivative works, such modified software should be clearly marked, |
| * so as not to confuse it with the version available from LANL. |
| * |
| * Additionally, 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 |
| * |
| * LA-CC 04-115 |
| *******************************************************************************/ |
| package org.eclipse.ptp.utils.ui.swt; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.jface.dialogs.IDialogConstants; |
| import org.eclipse.jface.resource.JFaceResources; |
| import org.eclipse.ptp.utils.ui.PixelConverter; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.layout.GridData; |
| import org.eclipse.swt.widgets.Button; |
| import org.eclipse.swt.widgets.Composite; |
| |
| public class SWTUtil { |
| /** |
| * Creates and returns a new push button with the given label and/or image. |
| * |
| * @param parent |
| * parent control |
| * @param label |
| * button label or <code>null</code> |
| * @param image |
| * image of <code>null</code> |
| * |
| * @return a new push button |
| */ |
| public static Button createPushButton(Composite parent, String label, |
| Image image) { |
| Button button = new Button(parent, SWT.PUSH); |
| button.setFont(parent.getFont()); |
| if (image != null) { |
| button.setImage(image); |
| } |
| if (label != null) { |
| button.setText(label); |
| } |
| GridData gd = new GridData(); |
| button.setLayoutData(gd); |
| setButtonDimensionHint(button); |
| return button; |
| } |
| |
| /** |
| * Sets width and height hint for the button control. <b>Note:</b> This is |
| * a NOP if the button's layout data is not an instance of |
| * <code>GridData</code>. |
| * |
| * @param the |
| * button for which to set the dimension hint |
| */ |
| public static void setButtonDimensionHint(Button button) { |
| Assert.isNotNull(button); |
| Object gd = button.getLayoutData(); |
| if (gd instanceof GridData) { |
| ((GridData) gd).widthHint = getButtonWidthHint(button); |
| ((GridData) gd).horizontalAlignment = GridData.FILL; |
| } |
| } |
| |
| /** |
| * Returns a width hint for a button control. |
| */ |
| public static int getButtonWidthHint(Button button) { |
| button.setFont(JFaceResources.getDialogFont()); |
| PixelConverter converter = new PixelConverter(button); |
| int widthHint = converter.convertHorizontalDLUsToPixels(IDialogConstants.BUTTON_WIDTH); |
| return Math.max(widthHint, button.computeSize(SWT.DEFAULT, SWT.DEFAULT, |
| true).x); |
| } |
| } |