debug/org.eclipse.ptp.debug.ui/src/org/eclipse/ptp/internal/debug/ui/PixelConverter.java

/*******************************************************************************
 * Copyright (c) 2005 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.internal.debug.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;

/**
 * @author Clement chu
 */
public class PixelConverter {
	private FontMetrics fFontMetrics;

	public PixelConverter(Control control) {
		GC gc = new GC(control);
		gc.setFont(control.getFont());
		setFontMetrics(gc.getFontMetrics());
		gc.dispose();
	}

	/**
	 * @see org.eclipse.jface.dialogs.DialogPage#convertHeightInCharsToPixels(int)
	 */
	public int convertHeightInCharsToPixels(int chars) {
		return Dialog.convertHeightInCharsToPixels(getFontMetrics(), chars);
	}

	/**
	 * @see org.eclipse.jface.dialogs.DialogPage#convertHorizontalDLUsToPixels(int)
	 */
	public int convertHorizontalDLUsToPixels(int dlus) {
		return Dialog.convertHorizontalDLUsToPixels(getFontMetrics(), dlus);
	}

	/**
	 * @see org.eclipse.jface.dialogs.DialogPage#convertVerticalDLUsToPixels(int)
	 */
	public int convertVerticalDLUsToPixels(int dlus) {
		return Dialog.convertVerticalDLUsToPixels(getFontMetrics(), dlus);
	}

	/**
	 * @see org.eclipse.jface.dialogs.DialogPage#convertWidthInCharsToPixels(int)
	 */
	public int convertWidthInCharsToPixels(int chars) {
		return Dialog.convertWidthInCharsToPixels(getFontMetrics(), chars);
	}

	private FontMetrics getFontMetrics() {
		return this.fFontMetrics;
	}

	private void setFontMetrics(FontMetrics fontMetrics) {
		this.fFontMetrics = fontMetrics;
	}
}