Mercurial > dive4elements > river

comparison artifacts/src/main/java/org/dive4elements/river/exports/ChartInfoGenerator2.java @ 7069:9b52c501c57e generator-refactoring

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Add InfoGenerator Hacks to be removed soon. Neccessary for testing but they will be removed again in one of the next commits
author Andre Heinecke <aheinecke@intevation.de>
date Fri, 20 Sep 2013 14:56:46 +0200
parents artifacts/src/main/java/org/dive4elements/river/exports/ChartInfoGenerator.java@5c6fd2c010dd
children 0a337f0005c2
comparison
equal deleted inserted replaced
7068:726d998dce29 7069:9b52c501c57e
1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
2 * Software engineering by Intevation GmbH
3 *
4 * This file is Free Software under the GNU AGPL (>=v3)
5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
6 * documentation coming with Dive4Elements River for details.
7 */
8
9 package org.dive4elements.river.exports;
10
11 import org.dive4elements.river.collections.D4EArtifactCollection;
12 import org.dive4elements.river.java2d.NOPGraphics2D;
13 import org.dive4elements.river.themes.ThemeDocument;
14
15 import java.io.IOException;
16 import java.io.OutputStream;
17
18 import java.awt.Transparency;
19 import java.awt.Graphics2D;
20
21 import java.awt.geom.Rectangle2D;
22
23 import java.awt.image.BufferedImage;
24
25 import org.w3c.dom.Document;
26 import org.w3c.dom.Element;
27
28 import org.apache.log4j.Logger;
29
30 import org.jfree.chart.ChartRenderingInfo;
31 import org.jfree.chart.JFreeChart;
32
33 import org.dive4elements.artifacts.Artifact;
34 import org.dive4elements.artifacts.CallContext;
35
36 import org.dive4elements.artifactdatabase.state.ArtifactAndFacet;
37 import org.dive4elements.artifactdatabase.state.Settings;
38
39 import org.dive4elements.artifacts.common.utils.XMLUtils;
40
41
42 /**
43 * An OutGenerator that generates meta information for charts. A concrete
44 * ChartInfoGenerator2 need to instantiate a concrete ChartGenerator and dispatch
45 * the methods to that instance. The only thing this ChartInfoGenerator2 needs
46 * to, is to overwrite the generate() method which doesn't write the chart image
47 * to the OutputStream but a Document that contains some meta information of the
48 * created chart.
49 *
50 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
51 */
52 public abstract class ChartInfoGenerator2 implements OutGenerator {
53
54 public static final boolean USE_NOP_GRAPHICS =
55 Boolean.getBoolean("info.rendering.nop.graphics");
56
57 /** The logger used in this generator.*/
58 private static Logger logger =
59 Logger.getLogger(ChartInfoGenerator2.class);
60
61
62 /** The OutGenerator that creates the charts.*/
63 protected ChartGenerator2 generator;
64
65 protected OutputStream out;
66
67
68
69 public ChartInfoGenerator2(ChartGenerator2 generator) {
70 this.generator = generator;
71 }
72
73 public void setup(Element config) {
74 logger.debug("ChartInfoGenerator2.setup");
75 }
76
77
78 /**
79 * Dispatches the operation to the instantiated generator.
80 *
81 * @param request
82 * @param out
83 * @param context
84 */
85 public void init(Document request, OutputStream out, CallContext context) {
86 this.out = out;
87
88 generator.init(request, out, context);
89 }
90
91
92 /**
93 * Dispatches the operation to the instantiated generator.
94 *
95 * @param master The master artifact
96 */
97 public void setMasterArtifact(Artifact master) {
98 generator.setMasterArtifact(master);
99 }
100
101
102 /**
103 * Dispatches the operation to the instantiated generator.
104 *
105 * @param collection The collection.
106 */
107 public void setCollection(D4EArtifactCollection collection) {
108 generator.setCollection(collection);
109 }
110
111
112 /**
113 * Dispatches the operation to the instantiated generator.
114 */
115 @Override
116 public void doOut(
117 ArtifactAndFacet artifactFacet,
118 ThemeDocument attr,
119 boolean visible
120 ) {
121 generator.doOut(artifactFacet, attr, visible);
122 }
123
124
125 /**
126 * This method generates the chart using a concrete ChartGenerator but
127 * doesn't write the chart itself to the OutputStream but a Document that
128 * contains meta information of the created chart.
129 */
130 @Override
131 public void generate()
132 throws IOException
133 {
134 logger.debug("ChartInfoGenerator2.generate");
135
136 JFreeChart chart = generator.generateChart();
137
138 int[] size = generator.getSize();
139 if (size == null) {
140 size = generator.getDefaultSize();
141 }
142
143 ChartRenderingInfo info = new ChartRenderingInfo();
144
145 long startTime = System.currentTimeMillis();
146
147 if (USE_NOP_GRAPHICS) {
148 BufferedImage image =
149 new BufferedImage(size[0], size[1], Transparency.BITMASK);
150
151 Graphics2D g2d = image.createGraphics();
152 Graphics2D nop = new NOPGraphics2D(g2d);
153
154 chart.draw(
155 nop,
156 new Rectangle2D.Double(0, 0, size[0], size[1]),
157 null,
158 info);
159
160 nop.dispose();
161 }
162 else {
163 chart.createBufferedImage(
164 size[0], size[1], Transparency.BITMASK, info);
165 }
166
167 long stopTime = System.currentTimeMillis();
168
169 if (logger.isDebugEnabled()) {
170 logger.debug("Rendering info took: " +
171 (stopTime-startTime) + "ms");
172 }
173
174
175 InfoGeneratorHelper helper = new InfoGeneratorHelper(generator);
176 Document doc = helper.createInfoDocument(chart, info);
177
178 XMLUtils.toStream(doc, out);
179 }
180
181
182 /**
183 * A proxy method which calls <i>generator</i>.getSettings() and returns its
184 * return value.
185 *
186 * @return a Settings object provided by <i>generator</i>.
187 */
188 @Override
189 public Settings getSettings() {
190 return generator.getSettings();
191 }
192
193
194 /**
195 * A proxy method which calls <i>generator</i>.setSettings().
196 *
197 * @param settings A settings object for the <i>generator</i>.
198 */
199 @Override
200 public void setSettings(Settings settings) {
201 generator.setSettings(settings);
202 }
203 }
204 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org