1 /*

     2  * Copyright 2000 Sun Microsystems, Inc.  All Rights Reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Sun designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Sun in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    22  * CA 95054 USA or visit www.sun.com if you need additional information or

    23  * have any questions.

    24  */

    25 

    26 package sun.print;

    27 

    28 import java.awt.Graphics;

    29 import java.awt.Graphics2D;

    30 import java.awt.image.BufferedImage;

    31 import java.awt.print.PageFormat;

    32 import java.awt.print.Printable;

    33 import java.net.URL;

    34 import java.io.InputStream;

    35 import javax.imageio.ImageIO;

    36 

    37 class ImagePrinter implements Printable {

    38 

    39     BufferedImage image;

    40 

    41     ImagePrinter(InputStream stream) {

    42         try {

    43             image = ImageIO.read(stream);

    44         } catch (Exception e) {

    45         }

    46     }

    47 

    48     ImagePrinter(URL url) {

    49         try {

    50             image = ImageIO.read(url);

    51         } catch (Exception e) {

    52         }

    53     }

    54 

    55     public int print(Graphics g, PageFormat pf, int index) {

    56 

    57         if (index > 0 || image == null) {

    58             return Printable.NO_SUCH_PAGE;

    59         }

    60 

    61         ((Graphics2D)g).translate(pf.getImageableX(), pf.getImageableY());

    62         int w = image.getWidth(null);

    63         int h = image.getHeight(null);

    64         int iw = (int)pf.getImageableWidth();

    65         int ih = (int)pf.getImageableHeight();

    66 

    67         // ensure image will fit

    68         int dw = w;

    69         int dh = h;

    70         if (dw > iw) {

    71             dh = (int)(dh * ( (float) iw / (float) dw)) ;

    72             dw = iw;

    73         }

    74         if (dh > ih) {

    75             dw = (int)(dw * ( (float) ih / (float) dh)) ;

    76             dh = ih;

    77         }

    78         // centre on page

    79         int dx = (iw - dw) / 2;

    80         int dy = (ih - dh) / 2;

    81 

    82         g.drawImage(image, dx, dy, dx+dw, dy+dh, 0, 0, w, h, null);

    83         return Printable.PAGE_EXISTS;

    84     }

    85 }