| /******************************************************************************* |
| * Copyright (c) 2011 Google, Inc. |
| * 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: |
| * Google, Inc. - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.wb.internal.core.utils.ui; |
| |
| import org.eclipse.jface.dialogs.Dialog; |
| import org.eclipse.swt.graphics.FontMetrics; |
| import org.eclipse.swt.graphics.GC; |
| import org.eclipse.swt.widgets.Control; |
| |
| /** |
| * Helper class for converting DLU and char size into pixels. |
| * |
| * Based on code from JDT UI. |
| * |
| * @author scheglov_ke |
| */ |
| public class PixelConverter { |
| private final FontMetrics fFontMetrics; |
| |
| //////////////////////////////////////////////////////////////////////////// |
| // |
| // Constructors |
| // |
| //////////////////////////////////////////////////////////////////////////// |
| public PixelConverter(Control control) { |
| GC gc = new GC(control); |
| gc.setFont(control.getFont()); |
| fFontMetrics = gc.getFontMetrics(); |
| gc.dispose(); |
| } |
| |
| //////////////////////////////////////////////////////////////////////////// |
| // |
| // Conversions |
| // |
| //////////////////////////////////////////////////////////////////////////// |
| /** |
| * see org.eclipse.jface.dialogs.DialogPage#convertHeightInCharsToPixels(int) |
| */ |
| public int convertHeightInCharsToPixels(int chars) { |
| return Dialog.convertHeightInCharsToPixels(fFontMetrics, chars); |
| } |
| |
| /** |
| * see org.eclipse.jface.dialogs.DialogPage#convertHorizontalDLUsToPixels(int) |
| */ |
| public int convertHorizontalDLUsToPixels(int dlus) { |
| return Dialog.convertHorizontalDLUsToPixels(fFontMetrics, dlus); |
| } |
| |
| /** |
| * see org.eclipse.jface.dialogs.DialogPage#convertVerticalDLUsToPixels(int) |
| */ |
| public int convertVerticalDLUsToPixels(int dlus) { |
| return Dialog.convertVerticalDLUsToPixels(fFontMetrics, dlus); |
| } |
| |
| /** |
| * see org.eclipse.jface.dialogs.DialogPage#convertWidthInCharsToPixels(int) |
| */ |
| public int convertWidthInCharsToPixels(int chars) { |
| return Dialog.convertWidthInCharsToPixels(fFontMetrics, chars); |
| } |
| } |