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comparison gnv-artifacts/src/main/java/de/intevation/gnv/chart/XMLChartTheme.java @ 304:a16d337c5678

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The style of charts can be configured with ChartThemes using XML configuration files. gnv-artifacts/trunk@362 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Mon, 23 Nov 2009 17:01:28 +0000
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children 22a6493e8460
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303:9ba2cf8cad8d 304:a16d337c5678
1 package de.intevation.gnv.chart;
2
3 import java.awt.Font;
4 import java.awt.Color;
5 import java.lang.NumberFormatException;
6
7 import org.apache.log4j.Logger;
8
9 import org.jfree.chart.StandardChartTheme;
10 import org.jfree.chart.plot.XYPlot;
11 import org.jfree.ui.RectangleInsets;
12 import org.jfree.util.UnitType;
13
14
15 import org.w3c.dom.Document;
16
17 import de.intevation.artifactdatabase.Config;
18
19 /**
20 * @author Ingo Weinzierl <ingo.weinzierl@intevation.de>
21 */
22 public class XMLChartTheme
23 extends StandardChartTheme
24 {
25 private static final Color DEFAULT_COLOR = Color.BLACK;
26
27 private Logger log = Logger.getLogger(XMLChartTheme.class);
28
29 protected boolean domainCrosshairVisible;
30 protected boolean rangeCrosshairVisible;
31
32
33 public XMLChartTheme(String name) {
34 super(name);
35 }
36
37
38 public void setDomainCrosshairVisible(boolean visible) {
39 this.domainCrosshairVisible = visible;
40 }
41
42
43 public boolean getDomainCrosshairVisible() {
44 return domainCrosshairVisible;
45 }
46
47
48 public boolean getRangeCrosshairVisible() {
49 return rangeCrosshairVisible;
50 }
51
52
53 public void setRangeCrosshairVisible(boolean visible) {
54 this.rangeCrosshairVisible = visible;
55 }
56
57
58 public void applyXMLConfiguration(Document document) {
59 log.debug("create XMLChartTheme");
60
61 init(document);
62 }
63
64
65 private void init(Document document) {
66 log.debug("init XMLChartTheme parameters");
67
68 initChartParameters(document);
69 initTitleParameters(document);
70 initSubtitleParameters(document);
71 initPlotParameters(document);
72 initAxisParameters(document);
73 initLegendParameters(document);
74 }
75
76
77 private void initTitleParameters(Document document) {
78 log.debug("init title parameters.");
79
80 int size = getInt(document, "theme/title/font/size/@value");
81 String type = getString(document, "theme/title/font/type/@value");
82 boolean bold = getBool(document, "theme/title/font/bold/@value");
83
84 setExtraLargeFont(createFont(type, size, bold));
85
86 String color = getString(document, "theme/title/font/color/@value");
87 Color c = decodeColor(color);
88 if (c != null)
89 setTitlePaint(c);
90 }
91
92
93 private void initSubtitleParameters(Document document) {
94 log.debug("init title parameters.");
95
96 int size = getInt(document, "theme/subtitle/font/size/@value");
97 String type = getString(document, "theme/subtitle/font/type/@value");
98 boolean bold = getBool(document, "theme/subtitle/font/bold/@value");
99
100 setLargeFont(createFont(type, size, bold));
101
102 String col = getString(document, "theme/subtitle/font/color/@value");
103 setSubtitlePaint(Color.decode(col));
104 }
105
106
107 private void initChartParameters(Document document) {
108 log.debug("init chart parameters.");
109
110 String bg = getString(document, "theme/chart/background/color/@value");
111 Color c = decodeColor(bg);
112 if (c != null)
113 setChartBackgroundPaint(c);
114 }
115
116
117 private void initPlotParameters(Document document) {
118 log.debug("init plot parameters.");
119
120 String tmp = null;
121 tmp = getString(document, "theme/plot/background/color/@value");
122 Color c = decodeColor(tmp);
123 if (c != null)
124 setPlotBackgroundPaint(c);
125
126 tmp = getString(document, "theme/plot/outline/color/@value");
127 c = decodeColor(tmp);
128 if (c != null)
129 setPlotOutlinePaint(c);
130
131 tmp = getString(document, "theme/plot/domaingridline/color/@value");
132 c = decodeColor(tmp);
133 if (c != null)
134 setDomainGridlinePaint(c);
135
136 tmp = getString(document, "theme/plot/rangegridline/color/@value");
137 c = decodeColor(tmp);
138 if (c != null)
139 setRangeGridlinePaint(c);
140
141 boolean rangeCrosshairVisible = getBool(
142 document, "theme/plot/rangecrosshair/visible/@value");
143 setRangeCrosshairVisible(rangeCrosshairVisible);
144
145 boolean domainCrosshairVisible = getBool(
146 document, "theme/plot/domaincrosshair/visible/@value");
147 setDomainCrosshairVisible(domainCrosshairVisible);
148
149 int top = getInt(document, "theme/plot/offset/top/@value");
150 int bottom = getInt(document, "theme/plot/offset/bottom/@value");
151 int left = getInt(document, "theme/plot/offset/left/@value");
152 int right = getInt(document, "theme/plot/offset/right/@value");
153 setAxisOffset(new RectangleInsets(
154 UnitType.RELATIVE,
155 top, left, bottom, right)
156 );
157 }
158
159
160 private void initAxisParameters(Document document) {
161 log.debug("init axis parameters.");
162
163 String tmp = null;
164 tmp = getString(document, "theme/axis/label/color/@value");
165 Color c = decodeColor(tmp);
166 if (c != null)
167 setAxisLabelPaint(c);
168
169 tmp = getString(document, "theme/axis/ticklabel/color/@value");
170 c = decodeColor(tmp);
171 if (c != null)
172 setTickLabelPaint(c);
173 }
174
175
176 private void initLegendParameters(Document document) {
177 log.debug("init legend parameters.");
178
179 String tmp = null;
180 tmp = getString(document, "theme/legend/font/color/@value");
181 Color c = decodeColor(tmp);
182 if (c != null)
183 setLegendItemPaint(c);
184
185 tmp = getString(document, "theme/legend/background/color/@value");
186 c = decodeColor(tmp);
187 if (c != null)
188 setLegendBackgroundPaint(c);
189 }
190
191
192 private static String getString(Document document, String xpath) {
193 return Config.getStringXPath(document, xpath);
194 }
195
196
197 private static int getInt(Document document, String xpath) {
198 String tmp = getString(document, xpath);
199
200 if (tmp != null)
201 return Integer.parseInt(tmp);
202 else
203 return 0;
204 }
205
206
207 private static boolean getBool(Document document, String xpath) {
208 String tmp = getString(document, xpath);
209
210 if (tmp != null)
211 return Boolean.parseBoolean(tmp);
212 else
213 return false;
214 }
215
216
217 protected Color decodeColor(String color) {
218 try {
219 if (color == null)
220 return null;
221
222 return Color.decode(color);
223 }
224 catch (NumberFormatException nfe) {
225 log.warn("Error while parsing color: " + color, nfe);
226 }
227
228 return null;
229 }
230
231
232 protected Font createFont(String type, int size, boolean bold) {
233 Font font = null;
234 if (bold)
235 font = new Font(type, Font.BOLD, size);
236 else
237 font = new Font(type, Font.PLAIN, size);
238
239 return font;
240 }
241
242
243 protected void applyToXYPlot(XYPlot plot) {
244 log.debug("apply theme parameter to XYPlot");
245
246 super.applyToXYPlot(plot);
247 plot.setDomainCrosshairVisible(this.domainCrosshairVisible);
248 plot.setRangeCrosshairVisible(this.rangeCrosshairVisible);
249 }
250 }
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