BarcodeArea


1   /*
2    * $Id: BarcodeArea.java,v 1.2 2003/10/29 07:51:37 jmaerki Exp $
3    * ============================================================================
4    * The Krysalis Patchy Software License, Version 1.1_01
5    * Copyright (c) 2003 Nicola Ken Barozzi.  All rights reserved.
6    *
7    * This Licence is compatible with the BSD licence as described and
8    * approved by http://www.opensource.org/, and is based on the
9    * Apache Software Licence Version 1.1.
10   *
11   * Redistribution and use in source and binary forms, with or without
12   * modification, are permitted provided that the following conditions
13   * are met:
14   *
15   * 1. Redistributions of source code must retain the above copyright
16   *    notice, this list of conditions and the following disclaimer.
17   *
18   * 2. Redistributions in binary form must reproduce the above copyright
19   *    notice, this list of conditions and the following disclaimer in
20   *    the documentation and/or other materials provided with the
21   *    distribution.
22   *
23   * 3. The end-user documentation included with the redistribution,
24   *    if any, must include the following acknowledgment:
25   *       "This product includes software developed for project
26   *        Krysalis (http://www.krysalis.org/)."
27   *    Alternately, this acknowledgment may appear in the software itself,
28   *    if and wherever such third-party acknowledgments normally appear.
29   *
30   * 4. The names "Krysalis" and "Nicola Ken Barozzi" and
31   *    "Krysalis Barcode" must not be used to endorse or promote products
32   *    derived from this software without prior written permission. For
33   *    written permission, please contact nicolaken@krysalis.org.
34   *
35   * 5. Products derived from this software may not be called "Krysalis",
36   *    "Krysalis Barcode", nor may "Krysalis" appear in their name,
37   *    without prior written permission of Nicola Ken Barozzi.
38   *
39   * 6. This software may contain voluntary contributions made by many
40   *    individuals, who decided to donate the code to this project in
41   *    respect of this licence, and was originally created by
42   *    Jeremias Maerki <jeremias@maerki.org>.
43   *
44   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
45   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
46   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
47   * DISCLAIMED.  IN NO EVENT SHALL THE KRYSALIS PROJECT OR
48   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
49   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
50   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
51   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
52   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
53   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
54   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55   * SUCH DAMAGE.
56   * ====================================================================
57   */
58  package org.krysalis.barcode.fop0205;
59  
60  import org.apache.batik.dom.svg.SVGDOMImplementation;
61  import org.apache.fop.layout.Area;
62  import org.apache.fop.layout.FontState;
63  import org.apache.fop.messaging.MessageHandler;
64  import org.apache.fop.render.Renderer;
65  import org.apache.fop.render.pdf.PDFRenderer;
66  import org.apache.fop.render.ps.PSRenderer;
67  import org.apache.fop.svg.SVGArea;
68  import org.krysalis.barcode.BarcodeGenerator;
69  import org.krysalis.barcode.output.BarcodeCanvasSetupException;
70  import org.krysalis.barcode.output.svg.SVGCanvasProvider;
71  import org.krysalis.barcode.tools.UnitConv;
72  import org.w3c.dom.DOMImplementation  ;
73  import org.w3c.dom.Document  ;
74  
75  /**
76   * Class representing an Barcode area in which the Barocde graphics sit
77   */
78  public class BarcodeArea extends Area {
79      
80      private BarcodeGenerator bargen;
81      private String   msg;
82      private String   renderMode;
83  
84      /**
85       * Construct an Barcode area
86       *
87       * @param fontState the font state
88       * @param width the width of the area
89       * @param height the height of the area
90       */
91      public BarcodeArea(FontState fontState, float width, float height) {
92          super(fontState, (int)width, (int)height);
93          currentHeight = (int)height;
94          contentRectangleWidth = (int)width;
95      }
96  
97      public void setBarcode(BarcodeGenerator bargen, 
98                  String   msg, String   renderMode) {
99          this.bargen = bargen;
100         this.msg = msg;
101         this.renderMode = renderMode;
102     }
103 
104     public BarcodeGenerator getBarcodeGenerator() {
105         return this.bargen;
106     }
107 
108     public String   getMessage() {
109         return this.msg;
110     }
111 
112     public String   getRenderMode() {
113         return this.renderMode;
114     }
115     
116     public int getWidth() {
117         return contentRectangleWidth;
118     }
119 
120     public double mpt2mm(double mpt) {
121         return UnitConv.pt2mm(mpt / 1000);
122     }
123 
124     /**
125      * Render the Barcode.
126      *
127      * @param renderer the Renderer to use
128      */
129     public void render(Renderer renderer) {
130         if (renderer instanceof PSRenderer) {
131             PSRenderer psr = (PSRenderer)renderer;
132             renderPostScriptBarcodeUsingSVG(psr);
133         } else if (renderer instanceof PDFRenderer) {
134             PDFRenderer pdfr = (PDFRenderer)renderer;
135             renderPDFBarcodeUsingSVG(pdfr);
136         } else {
137             MessageHandler.errorln(
138                 "Cannot render barcode. Unsupported renderer: " 
139                     + renderer.getClass().getName());
140         }
141     }
142     
143     protected SVGArea createSVGArea() throws BarcodeCanvasSetupException {
144         DOMImplementation domImpl = SVGDOMImplementation.getDOMImplementation();
145         SVGCanvasProvider svgout = new SVGCanvasProvider(domImpl, true);
146         getBarcodeGenerator().generateBarcode(svgout, getMessage());
147         Document   dom = svgout.getDOM();
148         SVGArea svgarea = new SVGArea(getFontState(), getWidth(), getHeight());
149         svgarea.setSVGDocument(dom);
150         return svgarea;
151     }
152     
153     protected void renderPostScriptBarcodeUsingSVG(PSRenderer psr) {
154         try {
155             psr.renderSVGArea(createSVGArea());
156         } catch (BarcodeCanvasSetupException bcse) {
157             MessageHandler.errorln(
158                 "Couldn't render barcode due to BarcodeCanvasSetupException: " 
159                     + bcse.getMessage());
160         }
161     }
162 
163     protected void renderPDFBarcodeUsingSVG(PDFRenderer pdfr) {
164         try {
165             pdfr.renderSVGArea(createSVGArea());
166         } catch (BarcodeCanvasSetupException bcse) {
167             MessageHandler.errorln(
168                 "Couldn't render barcode due to BarcodeCanvasSetupException: " 
169                     + bcse.getMessage());
170         }
171     }
172     
173 }
174
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