ImagePrintSupport


1   /*
2    * The contents of this file are subject to the terms of the Common Development
3    * and Distribution License (the License). You may not use this file except in
4    * compliance with the License.
5    *
6    * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7    * or http://www.netbeans.org/cddl.txt.
8    *
9    * When distributing Covered Code, include this CDDL Header Notice in each file
10   * and include the License file at http://www.netbeans.org/cddl.txt.
11   * If applicable, add the following below the CDDL Header, with the fields
12   * enclosed by brackets [] replaced by your own identifying information:
13   * "Portions Copyrighted [year] [name of copyright owner]"
14   *
15   * The Original Software is NetBeans. The Initial Developer of the Original
16   * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
17   * Microsystems, Inc. All Rights Reserved.
18   */
19  
20  package org.netbeans.modules.image;
21  
22  import java.awt.*;
23  import java.awt.image.*;
24  import java.awt.geom.*;
25  import java.awt.print.*;
26  import java.io.*;
27  
28  import org.openide.NotifyDescriptor;
29  import org.openide.ErrorManager;
30  import org.openide.DialogDisplayer;
31  import org.openide.cookies.PrintCookie;
32  import org.openide.util.NbBundle;
33  
34  /** Printing support.
35   * Manipulations of the image to suit page size and orientation
36   * occur through the method prepareImage( PageFormat ).
37   * Subclass' override this method to honour image handling.
38   *
39   * @author  michael wever [hair@netbeans.org]
40   * @author  Marian Petras
41   * @version $Revision: 1.5 $
42   */
43  public class ImagePrintSupport implements PrintCookie, Printable, ImageObserver {
44      /* associated dataObject */
45      protected ImageDataObject dataObject;
46      /* image to print */
47      protected Image image;
48      /* image to print */
49      protected RenderedImage renderedImage;
50      
51      /** Creates new ImagePrintSupport */
52      public ImagePrintSupport( ImageDataObject ido ) {
53          dataObject = ido;
54      }
55      
56      /** Prepare the image to fit on the given page, within the given margins. 
57       * Returns null if it were unable to prepare the image for the given page. 
58       * Throws a IllegalArgumentException if the page were too small for the image.
59       **/
60      protected static RenderedImage transformImage(RenderedImage image,
61                                                    PageFormat pf)
62              throws IllegalArgumentException   {
63          try{
64              AffineTransform af = new AffineTransform();
65              if( pf.getOrientation() == pf.LANDSCAPE ){
66              }else{
67                  af.translate( (double)pf.getImageableX(), (double)pf.getImageableY() );
68              }
69              
70              /** notify if too big for page **/
71              if( pf.getImageableWidth() - pf.getImageableX() < image.getWidth()
72                  || pf.getImageableHeight() - pf.getImageableY() < image.getHeight() )
73                      throw new IllegalArgumentException  ("Page too small for image");            //NOI18N
74              
75              /* Translate image */
76              AffineTransformOp afo = new AffineTransformOp( af, AffineTransformOp.TYPE_NEAREST_NEIGHBOR );
77              BufferedImage o = (BufferedImage)image;
78              BufferedImage i = new BufferedImage( o.getWidth()+(int)pf.getImageableX(), o.getHeight()+(int)pf.getImageableY(), o.getType() );
79              return afo.filter( (BufferedImage)image, i );
80          }catch(Exception   ex){
81              ex.printStackTrace();
82          }
83          return null;
84      }
85      
86      /** Print the content of the object.  */
87      public void print() {
88          
89          /* Try to load the image from the ImageDataObject: */
90          String   errMsgKey;
91          try {
92              image = dataObject.getImage();
93              errMsgKey = (image == null) ? "MSG_CouldNotLoad" : null;    //NOI18N
94          } catch (IOException ex) {
95              image = null;
96              errMsgKey = "MSG_ErrorWhileLoading";                        //NOI18N
97          }
98          assert (image == null) != (errMsgKey == null);
99          
100         /* If an error occured during loading, display a message and quit: */
101         if (errMsgKey != null) {
102             displayMessage(errMsgKey, NotifyDescriptor.WARNING_MESSAGE);
103             return;
104         }
105         
106         PrinterJob job = PrinterJob.getPrinterJob();
107         Book book = new Book();
108         PageFormat pf = org.openide.text.PrintSettings.getPageFormat(job);
109         book.append( this, pf );
110         job.setPageable( book );
111 
112         // Print
113         try {
114             if (image instanceof RenderedImage) {
115                 // Make sure not to print in the paper's margin.
116                 renderedImage = transformImage((RenderedImage) image, pf);
117             }
118             if (job.printDialog()) {
119                 job.print();
120             }
121         } catch (PrinterAbortException e) { // user exception
122             displayMessage("CTL_Printer_Abort",                         //NOI18N
123                            NotifyDescriptor.INFORMATION_MESSAGE);
124         } catch (Exception   e) {
125             ErrorManager.getDefault().notify(e);
126         } finally {
127             renderedImage = null;
128             image = null;
129         }
130     }
131     
132     /**
133      * Displays a localized user message.
134      * It is guaranteed that the displaying routine is called from
135      * the AWT event dispatching thread.
136      *
137      * @param  msgKey  bundle key of the message
138      * @param  msgType  message type - see {@link NotifyDescriptor} fields
139      */
140     private void displayMessage(String   msgKey, final int msgType) {
141         final String   msg = NbBundle.getMessage(ImagePrintSupport.class, msgKey);
142         java.awt.EventQueue.invokeLater(new Runnable  () { // display in the awt thread
143             public void run() {
144                 DialogDisplayer.getDefault().notify(
145                         new NotifyDescriptor.Message(msg, msgType));
146             }
147         });
148     }
149     
150     /* Implements Printable */
151     public int print(Graphics graphics, PageFormat pageFormat, int page) throws PrinterException {
152         if( page != 0 ) return Printable.NO_SUCH_PAGE;
153         
154         Graphics2D g2 = (Graphics2D)graphics;
155         if( renderedImage == null ){
156             /**
157              * most probably cause is image does not implement RenderedImage,
158              * just draw the image then.
159              **/
160             graphics.drawImage(image, (int)pageFormat.getImageableX(), (int)pageFormat.getImageableY(), this );
161         }else{
162             g2.drawRenderedImage( renderedImage, new AffineTransform() );
163         }
164         return Printable.PAGE_EXISTS;
165     }
166     
167     public boolean imageUpdate(java.awt.Image   image, int flags, int param2, int param3, int param4, int param5) {
168         return false;
169     }
170     
171 }
172
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