singleprint.java

来自「java实现的版画图程序」· Java 代码 · 共 45 行

package drawfigure.print;

import java.awt.*;
import java.awt.print.*;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */

public class SinglePrint
        implements Printable {
    Component myComponent;
    public SinglePrint(Component component)
    {
        this.myComponent = component;
    }

    public int print(Graphics g, PageFormat pf, int pageIndex)
            throws PrinterException
    {
        if (pageIndex > 1) {
            return Printable.NO_SUCH_PAGE;
        }
        else {
            Graphics2D g2 = (Graphics2D) g;
            double scale = 1;
            double sc1 = pf.getImageableWidth() / myComponent.getWidth();
            double sc2 = pf.getImageableHeight() / myComponent.getHeight();
            double sc = Math.min(sc1, sc2);
            if (sc < 1) {
                scale = sc;
            }
            g2.translate(pf.getImageableX(), pf.getImageableY());
            g2.scale(scale, scale);
            this.myComponent.paint(g2); 
            return Printable.PAGE_EXISTS;
        }
    }
}