AwtDisplayDevice.java

/*******************************************************************************
 * Copyright (c) 2004, 2008 John Krasnay 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:
 *     John Krasnay - initial API and implementation
 *******************************************************************************/

package net.sf.vex.swing;

import java.awt.Toolkit;

import net.sf.vex.core.DisplayDevice;

/**
 * Swing implementation of the Display Device abstract class
 * @author Vincent Lambert, Matrox Imaging
 */
public class AwtDisplayDevice extends DisplayDevice{
    
    private boolean loaded = false;
    private int horizontalPPI = 72;
    private int verticalPPI = 72;
    
    /** Creates a new instance of AwtDisplayDevice */
    public AwtDisplayDevice() {}
    
    public int getHorizontalPPI(){
        if (!this.loaded) {
            this.load();
        }
        return this.horizontalPPI;
    }
    
    public int getVerticalPPI(){
        if (!this.loaded) {
            this.load();
        }
        return this.verticalPPI;
    }
    
    private void load() {
        Toolkit tk = Toolkit.getDefaultToolkit();
        
        this.horizontalPPI = tk.getScreenResolution();
        this.verticalPPI = tk.getScreenResolution();
        this.loaded = true;
    }
}