KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > krysalis > barcode > fop0205 > 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 JavaDoc;
73 import org.w3c.dom.Document JavaDoc;
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 JavaDoc msg;
82     private String JavaDoc 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 JavaDoc msg, String JavaDoc 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 JavaDoc getMessage() {
109         return this.msg;
110     }
111
112     public String JavaDoc 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 JavaDoc 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
Popular Tags