Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/jfree/AxisDataset.java @ 9555:ef5754ba5573

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Implemented legend aggregation based on type of themes. Added theme-editor style configuration for aggregated legend entries. Only configured themes get aggregated.
author gernotbelger
date Tue, 23 Oct 2018 16:26:48 +0200
parents d8e753d0fdb9
children
rev   line source
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1 /* Copyright (C) 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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Tom Gottfried <tom@intevation.de>
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8
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9 package org.dive4elements.river.jfree;
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10
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11 import java.util.ArrayList;
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12 import java.util.List;
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13
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14 import org.jfree.data.Range;
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15 import org.jfree.data.RangeInfo;
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16 import org.jfree.data.time.TimeSeriesCollection;
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17 import org.jfree.data.xy.XYDataset;
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18
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19 /**
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20 * Axis datasets.
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21 */
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22 public class AxisDataset {
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23
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24 /** List of assigned datasets (in order). */
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25 private final List<XYDataset> datasets = new ArrayList<>();
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26
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27 /** Range to use to include all given datasets. */
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28 private Range range;
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29
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30 private boolean rangeDirty;
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31
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32 /** Add a dataset to internal list for this axis. */
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33 public void addDataset(final XYDataset dataset) {
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34 this.datasets.add(dataset);
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35 this.rangeDirty = true;
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36 }
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37
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38 public void setRange(final Range val) {
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39 this.range = val;
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40 }
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41
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42 /** Get Range for the range axis of this dataset. */
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43 public Range getRange() {
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44 if (this.range != null && !this.rangeDirty) {
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45 return this.range;
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46 }
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47 /* Calculate the min / max of all series */
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48 for (final XYDataset dataset : this.datasets) {
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49 Range newRange = null;
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50 if (dataset instanceof StyledAreaSeriesCollection) {
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51 final StyledAreaSeriesCollection areaSeries = (StyledAreaSeriesCollection) dataset;
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52 if (areaSeries.shouldCalculateRange())
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53 newRange = areaSeries.getRangeBounds(false);
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54 else {
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55 /*
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56 * For most area themes, we do not include areas in the range calculation because
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57 * they are used with very large / small values to draw areas
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58 * with axis boundaries
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59 */
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60 continue;
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61 }
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62 } else if (dataset instanceof RangeInfo) {
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63 /* The usual case for most series */
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64 newRange = ((RangeInfo) dataset).getRangeBounds(false);
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65 } else if (dataset instanceof TimeSeriesCollection) {
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66 /* Lalala <3 Jfreechart's class hirarchy */
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67 newRange = ((TimeSeriesCollection) dataset).getRangeBounds(false);
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68 }
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69
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70 /* Now we only expand as we also only add new data */
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71 if (this.range == null) {
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72 this.range = newRange;
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73 } else {
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74 this.range = Range.combine(this.range, newRange);
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75 }
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76 }
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77 this.rangeDirty = false;
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78 return this.range;
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79 }
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80
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81 /** Get Array of Datasets. */
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82 public XYDataset[] getDatasets() {
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83 return this.datasets.toArray(new XYDataset[this.datasets.size()]);
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84 }
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85
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86 /** True if no datasets given. */
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87 public boolean isEmpty() {
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88 return this.datasets.isEmpty();
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89 }
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90 }
http://dive4elements.wald.intevation.org