Mercurial > dive4elements > river
view flys-artifacts/src/main/java/de/intevation/flys/exports/XYChartGenerator.java @ 2264:d974e4589f5a
Primitive, incomplete CSV export for reference curves.
flys-artifacts/trunk@3920 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Mon, 06 Feb 2012 13:07:19 +0000 |
parents | 6aeb71517136 |
children | a3dd443976bc |
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package de.intevation.flys.exports; import java.awt.BasicStroke; import java.awt.Color; import java.awt.Font; import java.awt.Paint; import java.awt.Stroke; import java.text.NumberFormat; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import org.w3c.dom.Document; import org.apache.log4j.Logger; import org.jfree.chart.ChartFactory; import org.jfree.chart.JFreeChart; import org.jfree.chart.LegendItemCollection; import org.jfree.chart.annotations.XYBoxAnnotation; import org.jfree.chart.annotations.XYLineAnnotation; import org.jfree.chart.annotations.XYTextAnnotation; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.plot.XYPlot; import org.jfree.data.Range; import org.jfree.data.general.Series; import org.jfree.data.xy.XYSeries; import org.jfree.data.xy.XYSeriesCollection; import org.jfree.data.xy.XYDataset; import org.jfree.ui.RectangleInsets; import org.jfree.ui.TextAnchor; import de.intevation.artifactdatabase.state.Facet; import de.intevation.flys.jfree.FLYSAnnotation; import de.intevation.flys.jfree.StickyAxisAnnotation; import de.intevation.flys.jfree.CollisionFreeXYTextAnnotation; import de.intevation.flys.jfree.StyledAreaSeriesCollection; import de.intevation.flys.jfree.StyledXYSeries; import de.intevation.flys.utils.ThemeAccess; import de.intevation.flys.artifacts.model.HYKFactory; import org.json.JSONArray; import org.json.JSONException; /** * An abstract base class for creating XY charts. * * With respect to datasets, ranges and axis, there are following requirements: * <ul> * <li> First in, first drawn: "Early" datasets should be of lower Z-Oder * than later ones (only works per-axis). </li> * <li> Visible axis should initially show the range of all datasets that * show data for this axis (even invisible ones). Motivation: Once * a dataset (theme) has been activated, it should be on screen. </li> * <li> There should always be a Y-Axis on the "left". </li> * </ul> * * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a> */ public abstract class XYChartGenerator extends ChartGenerator { // TODO Consider storing the renderer here. private class XYAxisDataset implements AxisDataset { /** Symbolic integer, but also coding the priority (0 goes first). */ protected int axisSymbol; /** List of assigned datasets (in order). */ protected List<XYDataset> datasets; /** Range to use to include all given datasets. */ protected Range range; /** Index of axis in plot. */ protected int plotAxisIndex; /** Create AxisDataset. */ public XYAxisDataset(int symb) { this.axisSymbol = symb; datasets = new ArrayList<XYDataset>(); } /** Merge (or create given range with range so far (if any). */ private void mergeRanges(Range subRange) { // Avoid merging NaNs, as they take min/max place forever. if (subRange == null || Double.isNaN(subRange.getLowerBound()) || Double.isNaN(subRange.getUpperBound())) { return; } if (range == null) { range = subRange; return; } range = Range.combine(range, subRange); } @Override public void addDataset(XYDataset dataset) { datasets.add(dataset); includeYRange(((XYSeriesCollection) dataset).getSeries(0)); } /** Add a dataset, include its range. */ public void addDataset(XYSeries series) { addDataset(new XYSeriesCollection(series)); } @Override public void setRange(Range range) { this.range = range; } @Override public Range getRange() { return range; } @Override public XYDataset[] getDatasets() { return (XYDataset[]) datasets.toArray(new XYDataset[datasets.size()]); } public void addArea(StyledAreaSeriesCollection series) { this.datasets.add(series); } /** True if to be renedered as area. */ @Override public boolean isArea(XYDataset series) { return (series instanceof StyledAreaSeriesCollection); } /** Adjust range to include given dataset. */ public void includeYRange(XYSeries dataset) { mergeRanges(new Range(dataset.getMinY(), dataset.getMaxY())); } /** True if no datasets given. */ @Override public boolean isEmpty() { return this.datasets.isEmpty(); } /** Set the 'real' axis index that this axis is mapped to. */ @Override public void setPlotAxisIndex(int axisIndex) { this.plotAxisIndex = axisIndex; } /** Get the 'real' axis index that this axis is mapped to. */ @Override public int getPlotAxisIndex() { return this.plotAxisIndex; } } // class AxisDataset protected abstract YAxisWalker getYAxisWalker(); /** The logger that is used in this generator. */ private static Logger logger = Logger.getLogger(XYChartGenerator.class); /** List of annotations to insert in plot. */ protected List<FLYSAnnotation> annotations; /** The max X range to include all X values of all series for each axis. */ protected Map<Integer, Range> xRanges; /** The max Y range to include all Y values of all series for each axis. */ protected Map<Integer, Range> yRanges; public XYChartGenerator() { super(); xRanges = new HashMap<Integer, Range>(); yRanges = new HashMap<Integer, Range>(); } /** * Generate the chart anew (including localized axis and all). */ public JFreeChart generateChart() { logger.debug("XYChartGenerator.generateChart"); JFreeChart chart = ChartFactory.createXYLineChart( getChartTitle(), getXAxisLabel(), getYAxisLabel(0), null, PlotOrientation.VERTICAL, isLegendVisible(), false, false); XYPlot plot = (XYPlot) chart.getPlot(); chart.setBackgroundPaint(Color.WHITE); plot.setBackgroundPaint(Color.WHITE); addSubtitles(chart); adjustPlot(plot); //debugAxis(plot); addDatasets(plot); //debugDatasets(plot); recoverEmptyPlot(plot); preparePointRanges(plot); //debugAxis(plot); localizeAxes(plot); adjustAxes(plot); autoZoom(plot); // These have to go after the autozoom. addAnnotationsToRenderer(plot); return chart; } @Override protected Series getSeriesOf(XYDataset dataset, int idx) { return ((XYSeriesCollection) dataset).getSeries(idx); } @Override protected void setXRange(int axis, Range range) { xRanges.put(Integer.valueOf(axis), range); } @Override protected void setYRange(int axis, Range range) { yRanges.put(Integer.valueOf(axis), range); } @Override protected AxisDataset createAxisDataset(int idx) { logger.debug("Create new XYAxisDataset for index: " + idx); return new XYAxisDataset(idx); } /** * Put debug output about datasets. */ public void debugDatasets(XYPlot plot) { logger.debug("Number of datasets: " + plot.getDatasetCount()); for (int i = 0; i < plot.getDatasetCount(); i++) { if (plot.getDataset(i) == null) { logger.debug("Dataset #" + i + " is null"); continue; } logger.debug("Dataset #" + i + ":" + plot.getDataset(i)); XYSeriesCollection series = (XYSeriesCollection) plot.getDataset(i); logger.debug("X-Extend of Dataset: " + series.getSeries(0).getMinX() + " " + series.getSeries(0).getMaxX()); logger.debug("Y-Extend of Dataset: " + series.getSeries(0).getMinY() + " " + series.getSeries(0).getMaxY()); } } /** * Put debug output about axes. */ public void debugAxis(XYPlot plot) { logger.debug("..............."); for (int i = 0; i < plot.getRangeAxisCount(); i++) { if (plot.getRangeAxis(i) == null) logger.debug("Range-Axis #" + i + " == null"); else { logger.debug("Range-Axis " + i + " != null [" + plot.getRangeAxis(i).getRange().getLowerBound() + " " + plot.getRangeAxis(i).getRange().getUpperBound() + "]"); } } logger.debug("..............."); } /** * Registers an area to be drawn. * @param area Area to be drawn. * @param index 'axis index' * @param visible Whether or not to be visible (important for range calculations). */ public void addAreaSeries(StyledAreaSeriesCollection area, int index, boolean visible) { if (area == null) { logger.warn("Cannot yet render above/under curve."); return; } XYAxisDataset axisDataset = (XYAxisDataset) getAxisDataset(index); if (visible) { axisDataset.addArea(area); } else { // TODO only range merging. } //TODO range merging. } /** * Add given series if visible, if not visible adjust ranges (such that * all points in data would be plotted once visible). * @param series the dataseries to include in plot. * @param index ('symbolic') index of the series and of its axis. * @param visible whether or not the data should be plotted. */ public void addAxisSeries(XYSeries series, int index, boolean visible) { if (series == null) { return; } logger.debug("Y Range of XYSeries: " + series.getMinY() + " | " + series.getMaxY()); addAxisDataset(new XYSeriesCollection(series), index, visible); XYAxisDataset axisDataset = (XYAxisDataset) getAxisDataset(index); if (!visible) { // Do this also when not visible to have axis scaled by default such // that every data-point could be seen (except for annotations). axisDataset.includeYRange(series); } } /** * Effect: extend range of x axis to include given limits. * @param range the given ("minimal") range. * @param index index of axis to be merged. */ protected void combineXRanges(Range range, int index) { if (range == null || Double.isNaN(range.getLowerBound()) || Double.isNaN(range.getUpperBound())) { return; } Range old = xRanges.get(index); if (old != null) { range = Range.combine(old, range); } xRanges.put(index, range); } /** * Adds annotations to list (if visible is true). */ public void addAnnotations(FLYSAnnotation annotation, boolean visible) { if (!visible) { return; } if (annotations == null) { annotations = new ArrayList<FLYSAnnotation>(); } annotations.add(annotation); } /** * If no data is visible, draw at least empty axis. */ private void recoverEmptyPlot(XYPlot plot) { if (plot.getRangeAxis() == null) { logger.debug("debug: No range axis"); plot.setRangeAxis(createYAxis(0)); } } /** * Expands X axes if only a point is shown. */ private void preparePointRanges(XYPlot plot) { for (int i = 0, num = plot.getDomainAxisCount(); i < num; i++) { logger.debug("Check whether to expand a x axis."); Integer key = Integer.valueOf(i); Range r = xRanges.get(key); if (r != null && r.getLowerBound() == r.getUpperBound()) { setXRange(key, ChartHelper.expandRange(r, 5)); } } } /** * This method zooms the plot to the specified ranges in the attribute * document or to the ranges specified by the min/max values in the * datasets. <b>Note:</b> We determine the range manually if no zoom ranges * are given, because JFreeCharts auto-zoom adds a margin to the left and * right of the data area. * * @param plot The XYPlot. */ protected void autoZoom(XYPlot plot) { logger.debug("Zoom to specified ranges."); Range xrange = getDomainAxisRange(); Range yrange = getValueAxisRange(); ValueAxis xAxis = plot.getDomainAxis(); Range fixedXRange = getRangeForAxisFromSettings("X"); if (fixedXRange != null) { xAxis.setRange(fixedXRange); } else { zoomX(plot, xAxis, xRanges.get(0), xrange); } for (int i = 0, num = plot.getRangeAxisCount(); i < num; i++) { ValueAxis yaxis = plot.getRangeAxis(i); if (yaxis instanceof IdentifiableNumberAxis) { IdentifiableNumberAxis idAxis = (IdentifiableNumberAxis) yaxis; Range fixedRange = getRangeForAxisFromSettings(idAxis.getId()); if (fixedRange != null) { yaxis.setRange(fixedRange); continue; } } if (yaxis == null) { logger.debug("Zoom problem: no Y Axis for index: " + i); continue; } logger.debug("Prepare zoom settings for y axis at index: " + i); zoomY(plot, yaxis, yRanges.get(Integer.valueOf(i)), yrange); } } protected boolean zoomX(XYPlot plot, ValueAxis axis, Range range, Range x) { return zoom(plot, axis, range, x); } protected boolean zoomY(XYPlot plot, ValueAxis axis, Range range, Range x) { return zoom(plot, axis, range, x); } /** * Zooms the x axis to the range specified in the attribute document. * * @param plot The XYPlot. * @param axis The axis the shoud be modified. * @param range The whole range specified by a dataset. * @param x A user defined range (null permitted). * * @return true, if a zoom range was specified, otherwise false. */ protected boolean zoom(XYPlot plot, ValueAxis axis, Range range, Range x) { if (range == null) { return false; } if (x != null) { double min = range.getLowerBound(); double max = range.getUpperBound(); double diff = max > min ? max - min : min - max; Range computed = new Range( min + x.getLowerBound() * diff, min + x.getUpperBound() * diff); axis.setRangeWithMargins(computed); logger.debug("Zoom axis to: " + computed); return true; } axis.setRangeWithMargins(range); return false; } /** * This method extracts the minimum and maximum values for x and y axes * which are stored in <i>xRanges</i> and <i>yRanges</i>. * * @param index The index of the y-Axis. * * @return a Range[] as follows: [x-Range, y-Range]. */ @Override public Range[] getRangesForAxis(int index) { logger.debug("getRangesForAxis " + index); Range rx = xRanges.get(Integer.valueOf(0)); Range ry = yRanges.get(Integer.valueOf(index)); if (rx == null) { logger.warn("Range for x axis not set." + " Using default values: 0 - 1."); rx = new Range(0, 1); } if (ry == null) { logger.warn("Range for y" + index + " axis not set. Using default values: 0 - 1."); ry = new Range(0, 1); } return new Range[] {rx, ry}; } /** Get color for hyk zones by their type (which is the name). */ public Paint colorForHYKZone(String zoneName) { if (zoneName.startsWith("R")) { // Brownish. return new Color(153, 60, 0); } else if (zoneName.startsWith("V")) { // Greenish. return new Color(0, 255, 0); } else if (zoneName.startsWith("B")) { // Grayish. return new Color(128, 128, 128); } else if (zoneName.startsWith("H")) { // Blueish. return new Color(0, 0, 255); } else { // Default. logger.debug("Unknown zone type found."); return new Color(255, 0, 0); } } /** * Add a text and a line annotation. */ public void addStickyAnnotation( StickyAxisAnnotation annotation, XYPlot plot, Area area, ThemeAccess.LineStyle lineStyle, ThemeAccess.TextStyle textStyle ) { // OPTIMIZE pre-calculate area-related values final float TEXT_OFF = 0.03f; final float LINE_OFF = 0.02f; XYLineAnnotation lineAnnotation = null; XYTextAnnotation textAnnotation = null; int rendererIndex = 0; if (annotation.atX()) { textAnnotation = new CollisionFreeXYTextAnnotation( annotation.getText(), annotation.getPos(), area.ofGround(TEXT_OFF)); // OPTIMIZE externalize the calculation involving PI. textAnnotation.setRotationAngle(270f*Math.PI/180f); // Style the line. if (lineStyle != null) { lineAnnotation = new XYLineAnnotation(annotation.getPos(), area.atGround(), annotation.getPos(), area.ofGround(LINE_OFF), new BasicStroke(lineStyle.getWidth()),lineStyle.getColor()); textAnnotation.setRotationAnchor(TextAnchor.CENTER_LEFT); textAnnotation.setTextAnchor(TextAnchor.CENTER_LEFT); } else { lineAnnotation = new XYLineAnnotation(annotation.getPos(), area.atGround(), annotation.getPos(), area.ofGround(LINE_OFF)); textAnnotation.setRotationAnchor(TextAnchor.CENTER_LEFT); textAnnotation.setTextAnchor(TextAnchor.CENTER_LEFT); } } else { // Do the more complicated case where we stick to the Y-Axis. // There is one nasty case (duration curves, where annotations // might stick to the second y-axis). XYAxisDataset dataset = (XYAxisDataset) getAxisDataset( new Integer(annotation.getAxisSymbol())); if (dataset == null) { logger.warn("Annotation should stick to unfindable y-axis: " + annotation.getAxisSymbol()); rendererIndex = 0; } else { rendererIndex = dataset.getPlotAxisIndex(); } if (rendererIndex != 0) { // OPTIMIZE: Pass a different area to this function, // do the adding to renderer outside (let this // function return the annotations). // Note that this path is travelled rarely. Area area2 = new Area(plot.getDomainAxis(), plot.getRangeAxis(rendererIndex)); textAnnotation = new CollisionFreeXYTextAnnotation( annotation.getText(), area2.ofRight(TEXT_OFF), annotation.getPos()); textAnnotation.setRotationAnchor(TextAnchor.CENTER_RIGHT); textAnnotation.setTextAnchor(TextAnchor.CENTER_RIGHT); // Style the line. if (lineStyle != null) { lineAnnotation = new XYLineAnnotation(area2.ofRight(LINE_OFF), annotation.getPos(), area2.atRight(), annotation.getPos(), new BasicStroke(lineStyle.getWidth()), lineStyle.getColor()); } else { lineAnnotation = new XYLineAnnotation(area2.atRight(), annotation.getPos(), area2.ofRight(LINE_OFF), annotation.getPos()); } } else { textAnnotation = new CollisionFreeXYTextAnnotation( annotation.getText(), area.ofLeft(TEXT_OFF), annotation.getPos()); textAnnotation.setRotationAnchor(TextAnchor.CENTER_LEFT); textAnnotation.setTextAnchor(TextAnchor.CENTER_LEFT); // Style the line. if (lineStyle != null) { lineAnnotation = new XYLineAnnotation(area.atLeft(), annotation.getPos(), area.ofLeft(LINE_OFF), annotation.getPos(), new BasicStroke(lineStyle.getWidth()), lineStyle.getColor()); } else { lineAnnotation = new XYLineAnnotation(area.atLeft(), annotation.getPos(), area.ofLeft(LINE_OFF), annotation.getPos()); } } } // Style the text. if (textStyle != null) { textStyle.apply(textAnnotation); } // Add the Annotations to renderer. plot.getRenderer(rendererIndex).addAnnotation(textAnnotation, org.jfree.ui.Layer.BACKGROUND); plot.getRenderer(rendererIndex).addAnnotation(lineAnnotation, org.jfree.ui.Layer.BACKGROUND); } /** Add annotations (Sticky, Text and hyk zones). */ public void addAnnotationsToRenderer(XYPlot plot) { logger.debug("XYChartGenerator.addAnnotationsToRenderer"); if (annotations == null) { logger.debug("XYChartGenerator.addBoxAnnotations: no annotations."); return; } // Paints for the boxes/lines. Stroke basicStroke = new BasicStroke(1.0f); Paint linePaint = new Color(255, 0,0,60); Paint fillPaint = new Color(0, 255,0,60); Paint tranPaint = new Color(0, 0,0, 0); // OPTMIMIZE: Pre-calculate positions Area area = new Area( plot.getDomainAxis(0).getRange(), plot.getRangeAxis().getRange()); // Walk over all Annotation sets. for (FLYSAnnotation fa: annotations) { // Access text styling, if any. Document theme = fa.getTheme(); ThemeAccess.TextStyle textStyle = null; ThemeAccess.LineStyle lineStyle = null; // Get Themeing information and add legend item. if (theme != null) { ThemeAccess themeAccess = new ThemeAccess(theme); textStyle = themeAccess.parseTextStyle(); lineStyle = themeAccess.parseLineStyle(); if (fa.getLabel() != null) { LegendItemCollection lic = new LegendItemCollection(); LegendItemCollection old = plot.getFixedLegendItems(); lic.add(createLegendItem(theme, fa.getLabel())); // (Re-)Add prior legend entries. if (old != null) { old.addAll(lic); } else { old = lic; } plot.setFixedLegendItems(old); } } // The 'Sticky' Annotations (at axis, with line and text). for (StickyAxisAnnotation sta: fa.getAxisTextAnnotations()) { addStickyAnnotation(sta, plot, area, lineStyle, textStyle); } // Other Text Annotations. for (XYTextAnnotation ta: fa.getTextAnnotations()) { // Style the text. if (textStyle != null) { textStyle.apply(ta); } ta.setY(area.above(0.05d, ta.getY())); plot.getRenderer().addAnnotation(ta, org.jfree.ui.Layer.FOREGROUND); } // Hyks. for (HYKFactory.Zone zone: fa.getBoxes()) { // For each zone, create a box to fill with color, a box to draw // the lines and a text to display the type. fillPaint = colorForHYKZone(zone.getName()); XYBoxAnnotation boxA = new XYBoxAnnotation(zone.getFrom(), area.atGround(), zone.getTo(), area.ofGround(0.03f), basicStroke, tranPaint, fillPaint); XYBoxAnnotation boxB = new XYBoxAnnotation(zone.getFrom(), area.atGround(), zone.getTo(), area.atTop(), basicStroke, fillPaint, tranPaint); XYTextAnnotation tex = new XYTextAnnotation(zone.getName(), zone.getFrom() + (zone.getTo() - zone.getFrom()) / 2.0d, area.ofGround(0.015f)); if (textStyle != null) { textStyle.apply(tex); } plot.getRenderer().addAnnotation(boxA, org.jfree.ui.Layer.BACKGROUND); plot.getRenderer().addAnnotation(boxB, org.jfree.ui.Layer.BACKGROUND); plot.getRenderer().addAnnotation(tex, org.jfree.ui.Layer.BACKGROUND); } } } /** * Adjusts the axes of a plot. This method sets the <i>labelFont</i> of the * X axis. * * @param plot The XYPlot of the chart. */ protected void adjustAxes(XYPlot plot) { ValueAxis xaxis = plot.getDomainAxis(); ChartSettings chartSettings = getChartSettings(); if (chartSettings == null) { return; } Font labelFont = new Font( DEFAULT_FONT_NAME, Font.BOLD, getXAxisLabelFontSize()); xaxis.setLabelFont(labelFont); } /** * Set some Stroke/Grid defaults. */ protected void adjustPlot(XYPlot plot) { Stroke gridStroke = new BasicStroke( DEFAULT_GRID_LINE_WIDTH, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER, 3.0f, new float[] { 3.0f }, 0.0f); ChartSettings cs = getChartSettings(); boolean isGridVisible = cs != null ? isGridVisible(cs) : true; plot.setDomainGridlineStroke(gridStroke); plot.setDomainGridlinePaint(DEFAULT_GRID_COLOR); plot.setDomainGridlinesVisible(isGridVisible); plot.setRangeGridlineStroke(gridStroke); plot.setRangeGridlinePaint(DEFAULT_GRID_COLOR); plot.setRangeGridlinesVisible(isGridVisible); plot.setAxisOffset(new RectangleInsets(0d, 0d, 0d, 0d)); } /** * This method walks over all axes (domain and range) of <i>plot</i> and * calls localizeDomainAxis() for domain axes or localizeRangeAxis() for * range axes. * * @param plot The XYPlot. */ private void localizeAxes(XYPlot plot) { for (int i = 0, num = plot.getDomainAxisCount(); i < num; i++) { ValueAxis axis = plot.getDomainAxis(i); if (axis != null) { localizeDomainAxis(axis); } else { logger.warn("Domain axis at " + i + " is null."); } } for (int i = 0, num = plot.getRangeAxisCount(); i < num; i++) { ValueAxis axis = plot.getRangeAxis(i); if (axis != null) { localizeRangeAxis(axis); } else { logger.warn("Range axis at " + i + " is null."); } } } /** * Overrides the NumberFormat with the NumberFormat for the current locale * that is provided by getLocale(). * * @param domainAxis The domain axis that needs localization. */ protected void localizeDomainAxis(ValueAxis domainAxis) { NumberFormat nf = NumberFormat.getInstance(getLocale()); ((NumberAxis) domainAxis).setNumberFormatOverride(nf); } /** * Overrides the NumberFormat with the NumberFormat for the current locale * that is provided by getLocale(). * * @param domainAxis The domain axis that needs localization. */ protected void localizeRangeAxis(ValueAxis rangeAxis) { NumberFormat nf = NumberFormat.getInstance(getLocale()); ((NumberAxis) rangeAxis).setNumberFormatOverride(nf); } /** * Register annotations like MainValues for later plotting * * @param o list of annotations (data of facet). * @param facet The facet. This facet does NOT support any data objects. Use * FLYSArtifact.getNativeFacet() instead to retrieve a Facet which supports * data. * @param theme Theme document for given annotations. * @param visible The visibility of the annotations. */ protected void doAnnotations( FLYSAnnotation annotations, Facet facet, Document theme, boolean visible ){ logger.debug("doAnnotations"); // Add all annotations to our annotation pool. annotations.setTheme(theme); if (facet != null) annotations.setLabel(facet.getDescription()); addAnnotations(annotations, visible); } /** * Do Points out. */ protected void doPoints( Object o, String seriesName, Document theme, boolean visible, int axisIndex ) { XYSeries series = new StyledXYSeries(seriesName, theme); // Add text annotations for single points. List<XYTextAnnotation> xy = new ArrayList<XYTextAnnotation>(); try { JSONArray points = new JSONArray((String) o); for (int i = 0; i < points.length(); i++) { JSONArray array = points.getJSONArray(i); double x = array.getDouble(0); double y = array.getDouble(1); String name = array.getString(2); boolean act = array.getBoolean(3); if (!act) { continue; } //logger.debug(" x " + x + " y " + y ); series.add(x, y, false); xy.add(new CollisionFreeXYTextAnnotation(name, x, y)); } } catch(JSONException e){ logger.error("Could not decode json."); } FLYSAnnotation annotations = new FLYSAnnotation(null, null, null, theme); annotations.setTextAnnotations(xy); doAnnotations(annotations, null, theme, visible); addAxisSeries(series, axisIndex, visible); } /** Two Ranges that span a rectangular area. */ public static class Area { protected Range xRange; protected Range yRange; public Area(Range rangeX, Range rangeY) { this.xRange = rangeX; this.yRange = rangeY; } public Area(ValueAxis axisX, ValueAxis axisY) { this.xRange = axisX.getRange(); this.yRange = axisY.getRange(); } public double ofLeft(double percent) { return xRange.getLowerBound() + xRange.getLength() * percent; } public double ofRight(double percent) { return xRange.getUpperBound() - xRange.getLength() * percent; } public double ofGround(double percent) { return yRange.getLowerBound() + yRange.getLength() * percent; } public double atTop() { return yRange.getUpperBound(); } public double atGround() { return yRange.getLowerBound(); } public double atRight() { return xRange.getUpperBound(); } public double atLeft() { return xRange.getLowerBound(); } public double above(double percent, double base) { return base + yRange.getLength() * percent; } } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :