Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/exports/sq/SQOverviewGenerator.java @ 7691:fa4fbd66e752
(issue1579) Fix axes syncronisation at Gauges
The SyncNumberAxis was completely broken. It only synced
in one direction and even that did not work correctly when
data was added to the axis (and the syncAxis rescaled but
forgot the old axis) then there were lots of ways to bypass
that scaling. And i also think the trans calculation was wrong.
It has been replaced by a "mostly" simple method to just keep
the W in M and W in CM+Datum axes in sync. I say "Mostly" because
it had to deal with the Bounds interface.
author | Andre Heinecke <aheinecke@intevation.de> |
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date | Fri, 13 Dec 2013 19:03:00 +0100 |
parents | fe32a7f9655e |
children | e4606eae8ea5 |
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/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde * Software engineering by Intevation GmbH * * This file is Free Software under the GNU AGPL (>=v3) * and comes with ABSOLUTELY NO WARRANTY! Check out the * documentation coming with Dive4Elements River for details. */ package org.dive4elements.river.exports.sq; import java.awt.image.BufferedImage; import java.io.IOException; import java.io.OutputStream; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import javax.imageio.ImageIO; import javax.xml.xpath.XPathConstants; import org.apache.log4j.Logger; import org.jfree.chart.ChartRenderingInfo; import org.jfree.chart.JFreeChart; import org.w3c.dom.Document; import org.w3c.dom.Element; import org.w3c.dom.Node; import org.dive4elements.artifactdatabase.state.ArtifactAndFacet; import org.dive4elements.artifactdatabase.state.Settings; import org.dive4elements.artifacts.Artifact; import org.dive4elements.artifacts.ArtifactDatabaseException; import org.dive4elements.artifacts.CallContext; import org.dive4elements.artifacts.common.ArtifactNamespaceContext; import org.dive4elements.artifacts.common.utils.XMLUtils; import org.dive4elements.river.artifacts.context.RiverContext; import org.dive4elements.river.collections.D4EArtifactCollection; import org.dive4elements.river.exports.ChartGenerator2; import org.dive4elements.river.exports.OutGenerator; import org.dive4elements.river.exports.OutputHelper; import org.dive4elements.river.themes.ThemeDocument; public class SQOverviewGenerator implements OutGenerator { private static Logger logger = Logger.getLogger(SQOverviewGenerator.class); public static final String XPATH_CHART_SIZE = "/art:action/art:attributes/art:size"; protected D4EArtifactCollection collection; protected Artifact master; protected Settings settings; protected Document request; protected OutputStream out; protected CallContext context; protected List<JFreeChart> charts; protected String outName; @Override public void setup(Object config) { logger.debug("SQOverviewGenerator.setup"); } /** * Produce output. * @param artifactAndFacet current facet and artifact. * @param attr theme for facet */ @Override public void doOut( ArtifactAndFacet artifactAndFacet, ThemeDocument attr, boolean visible ) { logger.debug("doOut()"); // TODO: Why not using outName for this. String name = artifactAndFacet.getData(context).toString(); if(name != null) { logger.debug("name: " + name); ChartGenerator2 g = (ChartGenerator2)RiverContext.getOutGenerator( context, name, null); /* Make sure master is also set in those */ g.setMasterArtifact(master); if (g == null) { logger.debug("generator is null."); return; } OutputHelper helper = new OutputHelper(master.identifier()); Document collectionAttribute = collection.getAttribute(); try { Document cAttr = getAttribute(context, collectionAttribute, name); g.init(name, request, out, context); helper.doOut(g, name, name, cAttr, context); JFreeChart chart = g.generateChart(); chart.removeLegend(); charts.add(chart); } catch (IOException e) { logger.warn(e); } catch (ArtifactDatabaseException e) { logger.warn(e); } } } @Override public void init(String outName, Document request, OutputStream out, CallContext context) { this.outName = outName; this.request = request; this.out = out; this.context = context; charts = new ArrayList<JFreeChart>(); } @Override public void setMasterArtifact(Artifact master) { this.master = master; } @Override public void setCollection(D4EArtifactCollection collection) { this.collection = collection; } @Override public void generate() throws IOException { logger.debug("SQOverviewGenerator.generate"); int[] size = getSize(); if (size == null) { size = new int[] {400, 600}; } BufferedImage result = new BufferedImage(size[0], size[1], BufferedImage.TYPE_INT_RGB); for (int i = 0, S = charts.size(); i < S; i++) { logger.debug("index: " + i); JFreeChart chart = charts.get(i); ChartRenderingInfo info = new ChartRenderingInfo(); BufferedImage img = chart.createBufferedImage(size[0]/2, size[1]/3, info); int horPos = 0; int vertPos = 0; if (i % 2 == 1) { horPos = size[0]/2; } if (i > 1) { vertPos = (size[1] / 3) * (i / 2); } // TODO: Dispose Graphics object! result.createGraphics().drawImage(img, horPos, vertPos, null); } ImageIO.write(result, "png", out); } @Override public void setSettings(Settings settings) { this.settings = settings; } @Override public Settings getSettings() { return this.settings; } /** * Returns the "attribute" (part of description document) for a specific * output type. * * @param context The CallContext object. * @param attr The xml attribute saved at the collection. * @param output The name of the desired output type. * * @return the attribute for the desired output type. */ protected Document getAttribute( CallContext context, Document attr, String output) throws ArtifactDatabaseException { logger.debug("find specific XML node for Output: " + output); Map<String, String> vars = new HashMap<String, String>(); vars.put("output", output); Node out = (Node) XMLUtils.xpath( attr, "art:attribute/art:outputs/art:output[@name=$output]", XPathConstants.NODE, ArtifactNamespaceContext.INSTANCE, vars); if (out != null) { Document o = XMLUtils.newDocument(); o.appendChild(o.importNode(out, true)); return o; } return null; } /** * Returns the size of a chart export as array which has been specified by * the incoming request document. * * @return the size of a chart as [width, height] or null if no width or * height are given in the request document. */ protected int[] getSize() { int[] size = new int[2]; Element sizeEl = (Element)XMLUtils.xpath( request, XPATH_CHART_SIZE, XPathConstants.NODE, ArtifactNamespaceContext.INSTANCE); if (sizeEl != null) { String uri = ArtifactNamespaceContext.NAMESPACE_URI; String w = sizeEl.getAttributeNS(uri, "width"); String h = sizeEl.getAttributeNS(uri, "height"); if (w.length() > 0 && h.length() > 0) { try { size[0] = Integer.parseInt(w); size[1] = Integer.parseInt(h); } catch (NumberFormatException nfe) { logger.warn("Wrong values for chart width/height."); } } } return size[0] > 0 && size[1] > 0 ? size : null; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :