| /******************************************************************************* |
| * Copyright (c) 2003, 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.wst.server.ui.internal; |
| |
| import org.eclipse.jface.dialogs.Dialog; |
| import org.eclipse.jface.dialogs.IDialogConstants; |
| import org.eclipse.jface.resource.JFaceResources; |
| import org.eclipse.osgi.util.NLS; |
| 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; |
| import org.eclipse.swt.widgets.Spinner; |
| /** |
| * 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 | GridData.VERTICAL_ALIGN_BEGINNING); |
| data.widthHint = getButtonWidthHint(b); |
| b.setLayoutData(data); |
| return b; |
| } |
| |
| /** |
| * Convert DLUs to pixels. |
| * |
| * @param comp a component |
| * @param x pixels |
| * @return dlus |
| */ |
| public static int convertHorizontalDLUsToPixels(Composite comp, int x) { |
| if (fontMetrics == null) |
| initializeDialogUnits(comp); |
| return Dialog.convertHorizontalDLUsToPixels(fontMetrics, x); |
| } |
| |
| /** |
| * Convert DLUs to pixels. |
| * |
| * @param comp a component |
| * @param y pixels |
| * @return dlus |
| */ |
| public static int convertVerticalDLUsToPixels(Composite comp, int y) { |
| if (fontMetrics == null) |
| initializeDialogUnits(comp); |
| return Dialog.convertVerticalDLUsToPixels(fontMetrics, y); |
| } |
| |
| /** |
| * Set the tooltip of a spinner that represents a time in seconds. |
| * |
| * @param spinner |
| */ |
| public static void setSpinnerTooltip(Spinner spinner) { |
| int seconds = spinner.getSelection(); |
| String tooltipText; |
| if (seconds <= 60) |
| tooltipText = null; |
| else if ((seconds % 60) == 0) { // the seconds are exact minutes |
| int minutes = seconds / 60; |
| tooltipText = NLS.bind(Messages.minutes, minutes + ""); |
| } else { |
| int minutes = seconds / 60; |
| int modSec = (seconds % 60); |
| String secondsText = (modSec < 10) ? "0" + modSec : Integer.toString(modSec); |
| tooltipText = NLS.bind(Messages.minutes, minutes + ":" + secondsText); |
| } |
| spinner.setToolTipText(tooltipText); |
| } |
| } |