[PATCH 5 of 6] Add startkm and endkm setting to longitudinal section generator 2

[Wald Commits]

# HG changeset patch
# User Andre Heinecke <aheinecke at intevation.de>
# Date 1380182286 -7200
# Node ID ab109ae2acc61f079d3b21062163c044a0b329b2
# Parent  2d690611d11091fc368ca49929b282d5485f7bc6
Add startkm and endkm setting to longitudinal section generator 2

diff -r 2d690611d110 -r ab109ae2acc6 artifacts/src/main/java/org/dive4elements/river/exports/LongitudinalSectionGenerator2.java
--- a/artifacts/src/main/java/org/dive4elements/river/exports/LongitudinalSectionGenerator2.java	Wed Sep 25 18:04:49 2013 +0200
+++ b/artifacts/src/main/java/org/dive4elements/river/exports/LongitudinalSectionGenerator2.java	Thu Sep 26 09:58:06 2013 +0200
@@ -8,6 +8,13 @@
 
 package org.dive4elements.river.exports;
 
+import org.dive4elements.river.artifacts.D4EArtifact;
+import org.dive4elements.artifactdatabase.state.ArtifactAndFacet;
+import org.dive4elements.river.artifacts.access.RangeAccess;
+import org.dive4elements.river.jfree.Bounds;
+import org.dive4elements.river.jfree.DoubleBounds;
+import org.dive4elements.river.themes.ThemeDocument;
+
 public class LongitudinalSectionGenerator2 extends DiagramGenerator
 {
     public static final String I18N_CHART_SHORT_SUBTITLE =
@@ -33,5 +40,49 @@
 
         return super.getDefaultChartSubtitle();
     }
+
+    /* We override doOut here to save the startkm and endkm in the
+     * context. Some facets will deliver different data because of
+     * that setting. It is mainly used in MINFO where it causes
+     * adaptive smoothing on the data if you are zoomed out do
+     * reduce the static in the curve. */
+    @Override
+    public void doOut(
+        ArtifactAndFacet bundle,
+        ThemeDocument    theme,
+        boolean          visible
+    ) {
+        /* Aheinecke (25.09.2013): I do not understand why this has to be
+         * done so difficult and if it really must be done for every
+         * facet. At least it has to be done _before_ the super class
+         * actually does the output and accesses the facet data.
+         */
+        D4EArtifact artifact = (D4EArtifact)bundle.getArtifact();
+
+        if (getXBounds(0) != null && getDomainAxisRange() != null) {
+            Bounds bounds =
+                calculateZoom(getXBounds(0), getDomainAxisRange());
+            context.putContextValue("startkm", bounds.getLower());
+            context.putContextValue("endkm", bounds.getUpper());
+        }
+        else if (getXBounds(0) != null && getDomainAxisRange() == null) {
+            context.putContextValue("startkm", getXBounds(0).getLower());
+            context.putContextValue("endkm", getXBounds(0).getUpper());
+        }
+        else if (getXBounds(0) == null && getDomainAxisRange() == null) {
+            RangeAccess access = new RangeAccess(artifact);
+            context.putContextValue("startkm", access.getFrom());
+            context.putContextValue("endkm", access.getTo());
+        }
+        else if (getXBounds(0) == null && getDomainAxisRange() != null){
+            RangeAccess access = new RangeAccess(artifact);
+            Bounds b = new DoubleBounds(access.getFrom(), access.getTo());
+            Bounds bounds =
+                calculateZoom(b, getDomainAxisRange());
+            context.putContextValue("startkm", bounds.getLower());
+            context.putContextValue("endkm", bounds.getUpper());
+        }
+        super.doOut(bundle, theme, visible);
+    }
 }
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