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comparison flys-artifacts/src/main/java/de/intevation/flys/exports/XYChartGenerator.java @ 3175:4616436a84f4

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Progressed LegendItemAggregation. flys-artifacts/trunk@4789 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Mon, 25 Jun 2012 18:12:19 +0000
parents b6da650b0718
children 436ab826e82b
comparison
equal deleted inserted replaced
3174:6bde7c90dc93 3175:4616436a84f4
3 import java.awt.BasicStroke; 3 import java.awt.BasicStroke;
4 import java.awt.Color; 4 import java.awt.Color;
5 import java.awt.Font; 5 import java.awt.Font;
6 import java.awt.Paint; 6 import java.awt.Paint;
7 import java.awt.Stroke; 7 import java.awt.Stroke;
8 import java.awt.geom.Line2D;
8 9
9 import java.text.NumberFormat; 10 import java.text.NumberFormat;
10 11
11 import java.util.ArrayList; 12 import java.util.ArrayList;
12 import java.util.HashMap; 13 import java.util.HashMap;
1296 return hash; 1297 return hash;
1297 } 1298 }
1298 1299
1299 1300
1300 /** 1301 /**
1301 * Create a label for multiple items. 1302 * Create new legend entries, dependent on settings.
1302 *
1303 * For example from "W(Q=100)" and "W(Q=220)"
1304 * "W(Q= {100, 22})" would result.
1305 *
1306 * @param items list of legenditems.
1307 * @return the merged label.
1308 */
1309 public String mergeLegendNames(List<LegendItem> items) {
1310 if (items.size() == 0) {
1311 return null;
1312 }
1313 if (items.size() == 1) {
1314 return items.get(0).getLabel();
1315 }
1316
1317 // TODO consider using regionMathches for implementation.
1318 int lastMatchedChar = 0;
1319 boolean first = true;
1320 String startPattern = "";
1321 String endPattern = "";
1322 String name = "";
1323 // First, figure out beginning and end patterns, then merge.
1324 for (LegendItem item : items) {
1325 if (first) {
1326 startPattern = item.getLabel();
1327 endPattern = item.getLabel();
1328 first = false;
1329 continue;
1330 }
1331 while (startPattern.length() > 0 && !item.getLabel().startsWith(startPattern)) {
1332 startPattern = startPattern.substring(0, startPattern.length() -1);
1333 }
1334 while (endPattern.length() > 0 && !item.getLabel().endsWith(endPattern)) {
1335 endPattern = endPattern.substring(1);
1336 }
1337 }
1338
1339 // Then, merge.
1340 name = startPattern + " {";
1341 first = true;
1342 for (LegendItem item : items) {
1343 if (!first) {
1344 name += ", ";
1345 }
1346 else {
1347 first = false;
1348 }
1349 // Possible case in differences
1350 if (startPattern.length() + endPattern.length() < item.getLabel().length()) {
1351 // Note that we do not really want this.
1352 logger.error("Legend aggregation does not cover case: " +
1353 startPattern + " -- " + item.getLabel() + " -- " + endPattern);
1354 name += item.getLabel();
1355 }
1356 else {
1357 name += item.getLabel().substring(startPattern.length(),
1358 item.getLabel().length() - endPattern.length());
1359 }
1360 }
1361 name += "} ";
1362 name += endPattern;
1363
1364 return name;
1365 }
1366
1367
1368 /**
1369 * Create new legend entries, dependant on settings.
1370 * @param plot The plot for which to modify the legend. 1303 * @param plot The plot for which to modify the legend.
1371 */ 1304 */
1372 public void aggregateLegendEntries(XYPlot plot) { 1305 public void aggregateLegendEntries(XYPlot plot) {
1373 LegendItemCollection old = plot.getLegendItems(); 1306 LegendItemCollection old = plot.getLegendItems();
1374 // Find "similar" entries if aggregation is enabled. 1307 // Find "similar" entries if aggregation is enabled.
1415 if (itemList.size() >= AGGR_THRESHOLD) { 1348 if (itemList.size() >= AGGR_THRESHOLD) {
1416 // Now do merging. 1349 // Now do merging.
1417 LegendItem item = (LegendItem) itemList.get(0); 1350 LegendItem item = (LegendItem) itemList.get(0);
1418 // Unfortunately we cannot clone and just setDescription, as this 1351 // Unfortunately we cannot clone and just setDescription, as this
1419 // method was added in JFreeChart 1.0.14 (we are at .13). 1352 // method was added in JFreeChart 1.0.14 (we are at .13).
1420 LegendItem merged = new LegendItem( 1353
1421 mergeLegendNames(itemList), item.getDescription(), item.getToolTipText(), 1354 // Remove the shapes of all but the first items,
1422 item.getURLText(), item.isShapeVisible(), item.getShape(), 1355 // to prevent "overfill" of legenditemblock.
1423 item.isShapeFilled(), item.getFillPaint(), item.isShapeOutlineVisible(), 1356 for (int i = 0; i < itemList.size(); i++) {
1424 item.getOutlinePaint(), item.getOutlineStroke(), item.isLineVisible(), 1357 if (i != 0) {
1425 item.getLine(), item.getLineStroke(), item.getLinePaint()); 1358 LegendItem litem = itemList.get(i);
1426 newLegend.add(merged); 1359
1360 // TODO Like in D-Flys, define a static "SPACE" shape.
1361 // Make shape and line really small.
1362 LegendItem merged = new LegendItem(
1363 ", " + litem.getLabel(), litem.getDescription(), litem.getToolTipText(),
1364 litem.getURLText(), false, /*litem.getShape()*/ new Line2D.Double(0,0,0,0),
1365 false, litem.getFillPaint(), false,
1366 litem.getOutlinePaint(), litem.getOutlineStroke(), false,
1367 new Line2D.Double(0,0,0,0)
1368 /*litem.getLine()*/, litem.getLineStroke(), litem.getLinePaint());
1369 newLegend.add(merged);
1370 }
1371 else {
1372 newLegend.add(itemList.get(i));
1373 }
1374 }
1427 } 1375 }
1428 else { 1376 else {
1429 // Do not merge entries. 1377 // Do not merge entries.
1430 for (LegendItem li: itemList) { 1378 for (LegendItem li: itemList) {
1431 newLegend.add(li); 1379 newLegend.add(li);
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