--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/artifacts/src/main/java/org/dive4elements/river/jfree/ShapeRenderer.java	Thu Apr 25 15:23:37 2013 +0200
@@ -0,0 +1,357 @@
+package org.dive4elements.river.jfree;
+
+/**
+ * Copyright (c) 2006, 2012 by Intevation GmbH
+ *
+ * @author Sascha L. Teichmann (teichmann@intevation.de)
+ *
+ * This program is free software under the LGPL (>=v2.1)
+ * Read the file LGPL coming with FLYS for details.
+ */
+
+import java.awt.Font;
+import java.awt.Graphics2D;
+import java.awt.Paint;
+import java.awt.Shape;
+
+import java.awt.geom.Point2D;
+import java.awt.geom.Rectangle2D;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import org.jfree.chart.axis.ValueAxis;
+
+import org.jfree.chart.labels.ItemLabelPosition;
+import org.jfree.chart.labels.XYItemLabelGenerator;
+
+import org.jfree.chart.plot.CrosshairState;
+import org.jfree.chart.plot.PlotOrientation;
+import org.jfree.chart.plot.PlotRenderingInfo;
+import org.jfree.chart.plot.XYPlot;
+
+import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
+import org.jfree.chart.renderer.xy.XYItemRendererState;
+
+import org.jfree.data.xy.XYDataset;
+
+import org.jfree.text.TextUtilities;
+
+import org.jfree.ui.RectangleEdge;
+
+public class ShapeRenderer
+extends      StandardXYItemRenderer {
+
+    public static class Entry {
+        protected Shape   shape;
+        protected Shape   frame;
+        protected Paint   paint;
+        protected boolean filled;
+
+        public Entry(
+            Shape shape,
+            Paint paint,
+            boolean filled
+        ) {
+            this.shape = shape;
+            this.paint = paint;
+            this.filled = filled;
+        }
+
+        public Entry(
+            Shape   shape,
+            Shape   frame,
+            Paint   paint,
+            boolean filled
+        ) {
+            this.shape  = shape;
+            this.frame  = frame;
+            this.paint  = paint;
+            this.filled = filled;
+        }
+
+        public Shape getShape() {
+            return shape;
+        }
+
+        public void setShape(Shape shape) {
+            this.shape = shape;
+        }
+
+
+        public Paint getPaint() {
+            return paint;
+        }
+
+        public void setPaint(Paint paint) {
+            this.paint = paint;
+        }
+
+        public boolean getFilled() {
+            return filled;
+        }
+
+        public void setFilled(boolean filled) {
+            this.filled = filled;
+        }
+
+        public boolean equals(Object other) {
+            Entry entry = (Entry)other;
+            return filled == entry.filled
+                   &&   paint.equals(entry.paint)
+                   &&   shape.equals(entry.shape);
+        }
+
+        public int hashCode() {
+            return
+                shape.hashCode() ^
+                paint.hashCode() ^
+                (filled ? 1231 : 1237);
+        }
+    } // class Entry
+
+    public interface LabelGenerator {
+        String createLabel(Entry entry);
+    } // interface EntryLabelGenerator
+
+    protected Entry []  entries;
+
+    protected List<Rectangle2D> labelBoundingBoxes;
+
+    protected Rectangle2D area;
+
+    public ShapeRenderer() {
+        this(SHAPES);
+    }
+
+    public ShapeRenderer(int type) {
+        super(type);
+    }
+
+    public ShapeRenderer(Map<Entry, Integer> map) {
+        super(SHAPES);
+        setEntries(map);
+    }
+
+    public void setEntries(Entry [] entries) {
+        this.entries = entries;
+    }
+
+    public void setEntries(Map<Entry, Integer> map) {
+        Entry [] entries = new Entry[map.size()];
+
+        for (Map.Entry<Entry, Integer> entry: map.entrySet()) {
+            entries[entry.getValue()] = entry.getKey();
+        }
+
+        setEntries(entries);
+    }
+
+    @Override
+    public Shape getSeriesShape(int series) {
+        return entries[series].shape;
+    }
+
+    public Shape getSeriesFrame(int series) {
+        return entries[series].frame;
+    }
+
+    @Override
+    public Paint getSeriesPaint(int series) {
+        return entries[series].paint;
+    }
+
+    @Override
+    public boolean getItemShapeFilled(int series, int item) {
+        return entries[series].filled;
+    }
+
+    @Override
+    public XYItemRendererState initialise(
+        Graphics2D        g2,
+        Rectangle2D       dataArea,
+        XYPlot            plot,
+        XYDataset         data,
+        PlotRenderingInfo info
+    ) {
+        if (labelBoundingBoxes == null) {
+            labelBoundingBoxes = new ArrayList<Rectangle2D>(32);
+        }
+        else {
+            labelBoundingBoxes.clear();
+        }
+
+        area = dataArea;
+
+        return super.initialise(g2, dataArea, plot, data, info);
+    }
+
+    @Override
+    public void drawItem(
+        Graphics2D          g2,
+        XYItemRendererState state,
+        Rectangle2D         dataArea,
+        PlotRenderingInfo   info,
+        XYPlot              plot,
+        ValueAxis           domainAxis,
+        ValueAxis           rangeAxis,
+        XYDataset           dataset,
+        int                 series,
+        int                 item,
+        CrosshairState      crosshairState,
+        int                 pass
+    ) {
+        if (!getItemVisible(series, item)) {
+            return;
+        }
+
+        // get the data point...
+        double x1 = dataset.getXValue(series, item);
+        double y1 = dataset.getYValue(series, item);
+        if (Double.isNaN(x1) || Double.isNaN(y1)) {
+            return;
+        }
+
+        RectangleEdge xAxisLocation = plot.getDomainAxisEdge();
+        RectangleEdge yAxisLocation = plot.getRangeAxisEdge();
+        double x = domainAxis.valueToJava2D(x1, dataArea, xAxisLocation);
+        double y = rangeAxis.valueToJava2D(y1, dataArea, yAxisLocation);
+
+        if (dataArea.contains(x, y))
+            super.drawItem(
+                g2,
+                state,
+                dataArea,
+                info,
+                plot,
+                domainAxis,
+                rangeAxis,
+                dataset,
+                series,
+                item,
+                crosshairState,
+                pass);
+    }
+
+    protected Point2D shiftBox(Rectangle2D box) {
+
+        double cx1 = area.getX();
+        double cy1 = area.getY();
+        double cx2 = cx1 + area.getWidth();
+        double cy2 = cy1 + area.getHeight();
+
+        double bx1 = box.getX();
+        double by1 = box.getY();
+        double bx2 = bx1 + box.getWidth();
+        double by2 = by1 + box.getHeight();
+
+        double dx;
+        double dy;
+
+        if (bx1 < cx1) {
+            dx = cx1 - bx1;
+        }
+        else if (bx2 > cx2) {
+            dx = cx2 - bx2;
+        }
+        else {
+            dx = 0d;
+        }
+
+        if (by1 < cy1) {
+            dy = cy1 - by1;
+        }
+        else if (by2 > cy2) {
+            dy = cy2 - by2;
+        }
+        else {
+            dy = 0d;
+        }
+
+        return new Point2D.Double(dx, dy);
+    }
+
+    @Override
+    protected void drawItemLabel(
+        Graphics2D      g2,
+        PlotOrientation orientation,
+        XYDataset       dataset,
+        int             series,
+        int             item,
+        double          x,
+        double          y,
+        boolean         negative
+    ) {
+        XYItemLabelGenerator generator = getItemLabelGenerator(series, item);
+        if (generator == null) {
+            return;
+        }
+
+        Font labelFont = getItemLabelFont(series, item);
+
+        Paint paint = getItemLabelPaint(series, item);
+
+        g2.setFont(labelFont);
+        g2.setPaint(paint);
+
+        String label = generator.generateLabel(dataset, series, item);
+
+        ATTEMPS: for (int attempt = 0; attempt < 2; ++attempt) {
+            // get the label position..
+            ItemLabelPosition position = null;
+
+            boolean pos;
+            switch (attempt) {
+                case 0: pos = negative; break;
+                case 1: pos = !negative; break;
+                default: break ATTEMPS;
+            }
+
+            if (pos) {
+                position = getNegativeItemLabelPosition(series, item);
+            }
+            else {
+                position = getPositiveItemLabelPosition(series, item);
+            }
+
+            // work out the label anchor point...
+            Point2D anchorPoint = calculateLabelAnchorPoint(
+                position.getItemLabelAnchor(), x, y, orientation);
+
+            Shape labelShape = TextUtilities.calculateRotatedStringBounds(
+                label, g2,
+                (float)anchorPoint.getX(), (float)anchorPoint.getY(),
+                position.getTextAnchor(), position.getAngle(),
+                position.getRotationAnchor());
+
+            Rectangle2D bbox = labelShape.getBounds2D();
+
+            Point2D shift = shiftBox(bbox);
+
+            bbox = new Rectangle2D.Double(
+                bbox.getX() + shift.getX(),
+                bbox.getY() + shift.getY(),
+                bbox.getWidth(),
+                bbox.getHeight());
+
+            if (labelBoundingBoxes != null) {
+                for (Rectangle2D old: labelBoundingBoxes) {
+                    if (old.intersects(bbox)) {
+                        continue ATTEMPS;
+                    }
+                }
+                labelBoundingBoxes.add(bbox);
+            }
+
+            TextUtilities.drawRotatedString(
+                label, g2,
+                (float)(anchorPoint.getX() + shift.getX()),
+                (float)(anchorPoint.getY() + shift.getY()),
+                position.getTextAnchor(), position.getAngle(),
+                position.getRotationAnchor());
+            break;
+        }
+    }
+}
+// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :