[PATCH 1 of 3] issue1378: Also add ability to add text-annotations

[Wald Commits]

# HG changeset patch
# User Felix Wolfsteller <felix.wolfsteller at intevation.de>
# Date 1377080685 -7200
# Node ID 5a1078fd53e112359124b377a57a406784a10c32
# Parent  b410729bdcdd3f84a358791d43fe619466cb0dcc
issue1378: Also add ability to add text-annotations.

diff -r b410729bdcdd -r 5a1078fd53e1 artifacts/src/main/java/org/dive4elements/river/exports/DischargeCurveGenerator.java
--- a/artifacts/src/main/java/org/dive4elements/river/exports/DischargeCurveGenerator.java	Wed Aug 21 12:01:50 2013 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/exports/DischargeCurveGenerator.java	Wed Aug 21 12:24:45 2013 +0200
@@ -8,10 +8,15 @@
 
 package org.dive4elements.river.exports;
 
+import java.util.ArrayList;
+import java.util.List;
+
 import org.dive4elements.artifactdatabase.state.ArtifactAndFacet;
 import org.dive4elements.river.artifacts.D4EArtifact;
 import org.dive4elements.river.artifacts.model.FacetTypes;
 import org.dive4elements.river.artifacts.model.WQKms;
+import org.dive4elements.river.exports.process.DischargeProcessor;
+import org.dive4elements.river.jfree.CollisionFreeXYTextAnnotation;
 import org.dive4elements.river.jfree.Bounds;
 import org.dive4elements.river.jfree.RiverAnnotation;
 import org.dive4elements.river.jfree.StickyAxisAnnotation;
@@ -19,6 +24,7 @@
 import org.dive4elements.river.model.Gauge;
 import org.dive4elements.river.model.River;
 import org.dive4elements.river.utils.RiverUtils;
+import org.dive4elements.river.utils.ThemeUtil;
 
 import org.apache.log4j.Logger;
 import org.jfree.chart.annotations.XYTextAnnotation;
@@ -279,6 +285,28 @@
         addAxisSeries(series, YAXIS.W.idx, visible);
     }
 
+
+    /** Add a point annotation at given x and y coordinates. */
+    protected void addPointTextAnnotation(
+        String title,
+        double x,
+        double y,
+        Document theme
+    ) {
+        List<XYTextAnnotation> textAnnos =
+            new ArrayList<XYTextAnnotation>();
+        XYTextAnnotation anno = new CollisionFreeXYTextAnnotation(
+                title,
+                x,
+                y);
+        textAnnos.add(anno);
+        RiverAnnotation flysAnno = new RiverAnnotation(
+            null, null, null, theme);
+        flysAnno.setTextAnnotations(textAnnos);
+        addAnnotations(flysAnno);
+    }
+
+
     /**
      * Add WQ Data to plot.
      * @param wq data as double[][]
@@ -291,8 +319,9 @@
     ) {
         logger.debug("DischargeCurveGenerator: doWQOut");
         double [][] data = (double [][]) wq;
+        String title = aaf.getFacetDescription();
 
-        XYSeries series = new StyledXYSeries(aaf.getFacetDescription(), theme);
+        XYSeries series = new StyledXYSeries(title, theme);
 
         double translate = getCurrentGaugeDatum();
         if (translate != 0d) {
@@ -303,6 +332,23 @@
             StyledSeriesBuilder.addPoints(series, data, true);
             addAxisSeries(series, YAXIS.W.idx, visible);
         }
+
+        if(visible && ThemeUtil.parseShowPointLabel(theme)
+            && data != null && data.length != 0) {
+
+            double[] xs = data[0];
+            double[] ys = data[1];
+            for (int i = 0; i < xs.length; i++) {
+                double x = xs[i];
+                double y = ys[i];
+
+                if (translate != 0d) {
+                    y = (y-translate)*100d;
+                }
+
+                addPointTextAnnotation(title, x, y, theme);
+            }
+        }
     }
 
 }