Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/exports/ChartExportHelper.java @ 1735:5966a20fc72c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Enabled support for PDF and SVG chart exports. flys-artifacts/trunk@3023 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Wed, 19 Oct 2011 09:43:04 +0000
parents e6aff80b59ff
children 8428de5846e8
rev   line source
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
1 /*
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
2 * Copyright (c) 2011 by Intevation GmbH
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
3 *
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
4 * This program is free software under the LGPL (>=v2.1)
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
5 * Read the file LGPL.txt coming with the software for details
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
6 * or visit http://www.gnu.org/licenses/ if it does not exist.
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
7 */
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
8 package de.intevation.flys.exports;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
9
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
10 import com.lowagie.text.Document;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
11 import com.lowagie.text.DocumentException;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
12 import com.lowagie.text.PageSize;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
13 import com.lowagie.text.Rectangle;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
14
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
15 import com.lowagie.text.pdf.PdfContentByte;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
16 import com.lowagie.text.pdf.PdfTemplate;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
17 import com.lowagie.text.pdf.PdfWriter;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
18
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
19 import java.awt.Graphics2D;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
20 import java.awt.Transparency;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
21
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
22 import java.awt.geom.Rectangle2D.Double;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
23
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
24 import java.awt.geom.Rectangle2D;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
25
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
26 import java.io.IOException;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
27 import java.io.OutputStream;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
28 import java.io.OutputStreamWriter;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
29 import java.io.UnsupportedEncodingException;
1036
e6aff80b59ff Added proof-of-concept collision detection for text annotations.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 714
diff changeset
30 import org.jfree.chart.ChartRenderingInfo;
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
31
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
32 import javax.imageio.ImageIO;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
33
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
34 import org.apache.batik.svggen.SVGGraphics2D;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
35 import org.apache.batik.svggen.SVGGraphics2DIOException;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
36
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
37 import org.apache.log4j.Logger;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
38
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
39 import org.jfree.chart.JFreeChart;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
40
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
41 import de.intevation.artifacts.CallContext;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
42
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
43 import de.intevation.artifacts.common.utils.XMLUtils;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
44
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
45
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
46 /**
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
47 * This class is a helper class which supports some methods to export charts
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
48 * into specific formats.
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
49 *
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
50 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
51 */
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
52 public class ChartExportHelper {
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
53
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
54 public static final String FORMAT_PNG = "png";
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
55
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
56 public static final String FORMAT_PDF = "pdf";
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
57
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
58 public static final String FORMAT_SVG = "svg";
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
59
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
60
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
61 /**
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
62 * Constant field to define A4 as default page size.
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
63 */
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
64 public static final String DEFAULT_PAGE_SIZE = "A4";
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
65
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
66 /**
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
67 * Constant field to define UTF-8 as default encoding.
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
68 */
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
69 public static final String DEFAULT_ENCODING = "UTF-8";
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
70
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
71 /**
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
72 * Logger used for logging with log4j.
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
73 */
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
74 private static Logger log = Logger.getLogger(ChartExportHelper.class);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
75
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
76
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
77 /**
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
78 * A method to export a <code>JFreeChart</code> as image to an
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
79 * <code>OutputStream</code> with a given format, width and height.
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
80 *
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
81 * @param out OutputStream
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
82 * @param chart JFreeChart object to be exported.
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
83 * @param format Format (e.g. png, gif, jpg)
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
84 * @param width Width, the image used to be
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
85 * @param height Height, the image used to be
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
86 *
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
87 * @throws IOException if writing image to OutputStream failed.
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
88 */
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
89 public static void exportImage(
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
90 OutputStream out,
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
91 JFreeChart chart,
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
92 CallContext cc
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
93 )
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
94 throws IOException
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
95 {
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
96 log.info("export chart as png");
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
97
1036
e6aff80b59ff Added proof-of-concept collision detection for text annotations.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 714
diff changeset
98 ChartRenderingInfo info = new ChartRenderingInfo();
e6aff80b59ff Added proof-of-concept collision detection for text annotations.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 714
diff changeset
99
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
100 String format = (String) cc.getContextValue("chart.image.format");
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
101
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
102 int[] size = getSize(cc);
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
103
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
104 ImageIO.write(
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
105 chart.createBufferedImage(
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
106 size[0], size[1], Transparency.BITMASK, info
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
107 ),
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
108 format,
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
109 out
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
110 );
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
111 }
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
112
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
113
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
114 /**
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
115 * A method to export a <code>JFreeChart</code> as SVG to an
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
116 * <code>OutputStream</code>.
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
117 *
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
118 * @param out OutputStream
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
119 * @param chart JFreeChart to be exported
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
120 * @param context The CallContext object that contains extra chart
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
121 * parameters.
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
122 */
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
123 public static void exportSVG(
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
124 OutputStream out,
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
125 JFreeChart chart,
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
126 CallContext context
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
127 ) {
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
128 String encoding = (String) context.getContextValue("chart.encoding");
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
129
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
130 log.info("export chart as svg");
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
131
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
132 if (encoding == null)
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
133 encoding = DEFAULT_ENCODING;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
134
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
135 org.w3c.dom.Document document = XMLUtils.newDocument();
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
136 SVGGraphics2D graphics = new SVGGraphics2D(document);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
137
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
138 int[] size = getSize(context);
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
139
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
140 chart.draw(graphics, new Rectangle2D.Double(0.0D, 0.0D,size[0],size[1]));
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
141
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
142 try {
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
143 graphics.stream(new OutputStreamWriter(out, encoding));
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
144 }
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
145 catch (SVGGraphics2DIOException svge) {
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
146 log.error("Error while writing svg export to output stream.", svge);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
147 }
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
148 catch (UnsupportedEncodingException uee) {
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
149 log.error("Unsupported encoding: " + encoding, uee);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
150 }
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
151 }
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
153
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
154 /**
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
155 * A method to export a <code>JFreeChart</code> as PDF to an
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
156 * <code>OutputStream</code>.
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
157 *
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
158 * @param out OutputStream
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
159 * @param chart JFreeChart
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
160 * @param pageFormat String to specify a page format, {@link
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
161 * #DEFAULT_PAGE_SIZE} is used if no pageFormat is given
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
162 * @param landscape If this is true, the pdf is delivered in landscape
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
163 * format
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
164 * @param marginLeft Space to left border
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
165 * @param marginRight Space to right border
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
166 * @param marginTop Space to upper border
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
167 * @param marginBottom Space to lower border
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
168 */
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
169 public static void exportPDF(
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
170 OutputStream out,
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
171 JFreeChart chart,
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
172 CallContext cc
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
173 ) {
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
174 log.info("export chart as pdf.");
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
175
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
176 String pageFormat = (String) cc.getContextValue("chart.page.format");
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
177
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
178 if (pageFormat == null)
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
179 pageFormat = DEFAULT_PAGE_SIZE;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
180
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
181 // max size of the chart
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
182 Rectangle page = PageSize.getRectangle(pageFormat);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
183 float pageWidth = page.getWidth();
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
184 float pageHeight = page.getHeight();
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
185
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
186 // the chart width
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
187 int[] size = getSize(cc);
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
188
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
189 boolean landscape = size[0] > size[1];
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
190
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
191 float width = 0;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
192 float height = 0;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
193 if (landscape) {
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
194 width = pageHeight;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
195 height = pageWidth;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
196 }
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
197 else {
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
198 width = pageWidth;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
199 height = pageHeight;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
200 }
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
201
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
202 float marginLeft = (Float) cc.getContextValue(
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
203 "chart.marginLeft");
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
204
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
205 float marginRight = (Float) cc.getContextValue(
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
206 "chart.marginRight");
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
207
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
208 float marginTop = (Float) cc.getContextValue(
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
209 "chart.marginTop");
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
210
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
211 float marginBottom = (Float) cc.getContextValue(
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
212 "chart.marginBottom");
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
213
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
214 float spaceX = width - marginLeft - marginRight;
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
215 if (size[0] > spaceX) {
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
216 log.warn("Width of the chart is too big for pdf -> resize it now.");
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
217 double ratio = ((double)spaceX) / size[0];
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
218 size[0] *= ratio;
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
219 size[1] *= ratio;
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
220 log.debug("Resized chart to " + size[0] + "x" + size[1]);
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
221 }
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
222
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
223 float spaceY = height - marginTop - marginBottom;
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
224 if (size[1] > spaceY) {
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
225 log.warn("Height of the chart is too big for pdf -> resize it now.");
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
226 double ratio = ((double)spaceY) / size[1];
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
227 size[0] *= ratio;
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
228 size[1] *= ratio;
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
229 log.debug("Resized chart to " + size[0] + "x" + size[1]);
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
230 }
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
231
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
232 Document document = null;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
233 if (landscape) {
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
234 document = new Document(page.rotate());
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
235 log.debug("Create landscape pdf.");
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
236 }
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
237 else
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
238 document = new Document(page);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
239
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
240 try {
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
241 PdfWriter writer = PdfWriter.getInstance(document, out);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
242
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
243 document.addSubject(chart.getTitle().getText());
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
244 document.addCreationDate();
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
245 document.open();
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
246
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
247 PdfContentByte content = writer.getDirectContent();
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
248
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
249 PdfTemplate template = content.createTemplate(width, height);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
250 Graphics2D graphics = template.createGraphics(width, height);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
251
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
252 double[] origin = getCenteredAnchor(
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
253 marginLeft, marginRight, marginBottom, marginTop,
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
254 width, height,
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
255 size[0], size[1]);
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
256
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
257 Rectangle2D area = new Rectangle2D.Double(
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
258 origin[0], origin[1], size[0], size[1]);
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
259
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
260 chart.draw(graphics, area);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
261 graphics.dispose();
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
262 content.addTemplate(template, 0f, 0f);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
263 }
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
264 catch (DocumentException de) {
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
265 log.error("Error while exporting chart to pdf.", de);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
266 }
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
267 finally {
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
268 document.close();
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
269 }
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
270 }
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
271
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
272
1735
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
273 public static int[] getSize(CallContext cc) {
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
274 int[] size = new int[2];
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
275
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
276 size[0] = (Integer) cc.getContextValue("chart.width");
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
277 size[1] = (Integer) cc.getContextValue("chart.height");
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
278
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
279 return size;
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
280 }
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
281
5966a20fc72c Enabled support for PDF and SVG chart exports.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents: 1036
diff changeset
282
152
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
283 /**
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
284 * This method returns the anchor of the chart so that the chart is centered
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
285 * according to the given parameters.
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
286 *
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
287 * @param mLeft Left margin
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
288 * @param mRight Right margin
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
289 * @param mBottom Bottom margin
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
290 * @param mTop Top margin
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
291 * @param width The complete width of the drawing area.
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
292 * @param height The complete height of the drawing area.
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
293 * @param chartWidth The width of the chart.
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
294 * @param chartHeight The height of the chart.
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
295 *
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
296 * @return an array that contains the anchor for a chart with the given
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
297 * parameters. The first value is the x point, the second value is the y
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
298 * point.
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
299 */
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
300 public static double[] getCenteredAnchor(
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
301 double mLeft, double mRight, double mBottom, double mTop,
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
302 double width, double height,
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
303 double chartWidth, double chartHeight
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
304 ) {
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
305 if (log.isDebugEnabled()) {
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
306 log.debug("Calculate centered origin...");
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
307 log.debug("-> PDF width : " + width);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
308 log.debug("-> PDF height : " + height);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
309 log.debug("-> Chart width : " + chartWidth);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
310 log.debug("-> Chart height : " + chartHeight);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
311 log.debug("-> margin left : " + mLeft);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
312 log.debug("-> margin right : " + mRight);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
313 log.debug("-> margin bottom: " + mBottom);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
314 log.debug("-> margin top : " + mTop);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
315 }
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
316
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
317 double[] origin = new double[2];
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
318
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
319 double centerX = width / 2;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
320 double centerY = height / 2;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
321
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
322 origin[0] = centerX - chartWidth / 2;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
323 origin[1] = centerY - chartHeight / 2;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
324
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
325 origin[0] = origin[0] >= mLeft ? origin[0] : mLeft;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
326 origin[1] = origin[1] >= mTop ? origin[1] : mTop;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
327
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
328 if (log.isDebugEnabled()) {
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
329 log.debug("==> centered left origin: " + origin[0]);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
330 log.debug("==> centered top origin: " + origin[1]);
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
331 }
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
332
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
333 return origin;
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
334 }
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
335 }
956445dd601d Added a helper class to export charts.
Ingo Weinzierl <ingo.weinzierl@intevation.de>
parents:
diff changeset
336 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf-8 :
http://dive4elements.wald.intevation.org