Mercurial > dive4elements > river
comparison flys-artifacts/src/main/java/de/intevation/flys/exports/ChartGenerator.java @ 652:8fa4c5c9cd1a
Charts are zoomed to a specified view if the attribute document for the chart creation contains an x and/or y range.
flys-artifacts/trunk@2047 c6561f87-3c4e-4783-a992-168aeb5c3f6f
| author | Ingo Weinzierl <ingo.weinzierl@intevation.de> |
|---|---|
| date | Fri, 03 Jun 2011 06:47:51 +0000 |
| parents | bab867fb37e8 |
| children | 45cd58a2a2bb |
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| 651:e6cecb661bff | 652:8fa4c5c9cd1a |
|---|---|
| 7 | 7 |
| 8 import org.apache.log4j.Logger; | 8 import org.apache.log4j.Logger; |
| 9 | 9 |
| 10 import org.w3c.dom.Document; | 10 import org.w3c.dom.Document; |
| 11 import org.w3c.dom.Node; | 11 import org.w3c.dom.Node; |
| 12 | |
| 13 import org.jfree.data.Range; | |
| 12 | 14 |
| 13 import de.intevation.artifacts.Artifact; | 15 import de.intevation.artifacts.Artifact; |
| 14 import de.intevation.artifacts.CallContext; | 16 import de.intevation.artifacts.CallContext; |
| 15 | 17 |
| 16 import de.intevation.artifacts.ArtifactNamespaceContext; | 18 import de.intevation.artifacts.ArtifactNamespaceContext; |
| 41 | 43 |
| 42 /** The XPath that points to the chart size of the incoming request | 44 /** The XPath that points to the chart size of the incoming request |
| 43 * document.*/ | 45 * document.*/ |
| 44 public static final String XPATH_CHART_SIZE = | 46 public static final String XPATH_CHART_SIZE = |
| 45 "/art:action/art:attributes/art:size"; | 47 "/art:action/art:attributes/art:size"; |
| 48 | |
| 49 public static final String XPATH_CHART_X_RANGE = | |
| 50 "/art:action/art:attributes/art:xrange"; | |
| 51 | |
| 52 public static final String XPATH_CHART_Y_RANGE = | |
| 53 "/art:action/art:attributes/art:yrange"; | |
| 46 | 54 |
| 47 | 55 |
| 48 /** The document of the incoming out() request.*/ | 56 /** The document of the incoming out() request.*/ |
| 49 protected Document request; | 57 protected Document request; |
| 50 | 58 |
| 133 | 141 |
| 134 return size[0] > 0 && size[1] > 0 ? size : getDefaultSize(); | 142 return size[0] > 0 && size[1] > 0 ? size : getDefaultSize(); |
| 135 } | 143 } |
| 136 | 144 |
| 137 | 145 |
| 146 protected Range getDomainAxisRange() { | |
| 147 Node xrange = (Node) XMLUtils.xpath( | |
| 148 request, | |
| 149 XPATH_CHART_X_RANGE, | |
| 150 XPathConstants.NODE, | |
| 151 ArtifactNamespaceContext.INSTANCE); | |
| 152 | |
| 153 if (xrange == null) { | |
| 154 return null; | |
| 155 } | |
| 156 | |
| 157 String lower = XMLUtils.xpathString( | |
| 158 xrange, "@art:from", ArtifactNamespaceContext.INSTANCE); | |
| 159 | |
| 160 String upper = XMLUtils.xpathString( | |
| 161 xrange, "@art:to", ArtifactNamespaceContext.INSTANCE); | |
| 162 | |
| 163 logger.debug("FOUND X RANGE: " + lower + " -> " + upper); | |
| 164 | |
| 165 if (lower != null && upper != null) { | |
| 166 try { | |
| 167 double from = Double.parseDouble(lower); | |
| 168 double to = Double.parseDouble(upper); | |
| 169 | |
| 170 if (from == 0 && to == 0) { | |
| 171 logger.debug("No range specified. Lower and upper X == 0"); | |
| 172 return null; | |
| 173 } | |
| 174 | |
| 175 if (from > to) { | |
| 176 double tmp = to; | |
| 177 to = from; | |
| 178 from = tmp; | |
| 179 } | |
| 180 | |
| 181 return new Range(from, to); | |
| 182 } | |
| 183 catch (NumberFormatException nfe) { | |
| 184 logger.warn("Wrong values for domain axis range."); | |
| 185 } | |
| 186 } | |
| 187 | |
| 188 return null; | |
| 189 } | |
| 190 | |
| 191 | |
| 192 protected Range getValueAxisRange() { | |
| 193 Node yrange = (Node) XMLUtils.xpath( | |
| 194 request, | |
| 195 XPATH_CHART_Y_RANGE, | |
| 196 XPathConstants.NODE, | |
| 197 ArtifactNamespaceContext.INSTANCE); | |
| 198 | |
| 199 if (yrange == null) { | |
| 200 return null; | |
| 201 } | |
| 202 | |
| 203 String lower = XMLUtils.xpathString( | |
| 204 yrange, "@art:from", ArtifactNamespaceContext.INSTANCE); | |
| 205 | |
| 206 String upper = XMLUtils.xpathString( | |
| 207 yrange, "@art:to", ArtifactNamespaceContext.INSTANCE); | |
| 208 | |
| 209 if (lower != null && upper != null) { | |
| 210 try { | |
| 211 double from = Double.parseDouble(lower); | |
| 212 double to = Double.parseDouble(upper); | |
| 213 | |
| 214 if (from == 0 && to == 0) { | |
| 215 logger.debug("No range specified. Lower and upper Y == 0"); | |
| 216 return null; | |
| 217 } | |
| 218 | |
| 219 if (from > to) { | |
| 220 double tmp = to; | |
| 221 to = from; | |
| 222 from = tmp; | |
| 223 } | |
| 224 | |
| 225 return new Range(from, to); | |
| 226 } | |
| 227 catch (NumberFormatException nfe) { | |
| 228 logger.warn("Wrong values for value axis range."); | |
| 229 } | |
| 230 } | |
| 231 | |
| 232 return null; | |
| 233 } | |
| 234 | |
| 235 | |
| 138 /** | 236 /** |
| 139 * Returns the default size of a chart export as array. | 237 * Returns the default size of a chart export as array. |
| 140 * | 238 * |
| 141 * @return the default size of a chart as [width, height]. | 239 * @return the default size of a chart as [width, height]. |
| 142 */ | 240 */ |