Import Upstream version 0.7.0

1 files changed, 158 insertions, 0 deletions

diff --git a/addons/batikvis/src/main/java/de/lmu/ifi/dbs/elki/visualization/svg/SVGScoreBar.java b/addons/batikvis/src/main/java/de/lmu/ifi/dbs/elki/visualization/svg/SVGScoreBar.java
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+++ b/addons/batikvis/src/main/java/de/lmu/ifi/dbs/elki/visualization/svg/SVGScoreBar.java
@@ -0,0 +1,158 @@
+package de.lmu.ifi.dbs.elki.visualization.svg;
+
+/*
+ This file is part of ELKI:
+ Environment for Developing KDD-Applications Supported by Index-Structures
+
+ Copyright (C) 2015
+ Ludwig-Maximilians-Universität München
+ Lehr- und Forschungseinheit für Datenbanksysteme
+ ELKI Development Team
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU Affero General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+import java.text.NumberFormat;
+
+import org.apache.batik.util.SVGConstants;
+import org.w3c.dom.Element;
+
+/**
+ * Draw a score bar. Essentially like a progress bar, left-to-right, displaying
+ * a relative score.
+ * 
+ * @author Sascha Goldhofer
+ */
+// TODO: refactor to get a progress bar?
+public class SVGScoreBar {
+  /**
+   * Value, minimum and maximum values
+   */
+  protected double val, min = 0., max = 1.;
+
+  /**
+   * Reversed flag.
+   */
+  protected boolean reversed = false;
+
+  /**
+   * Label (on the right)
+   */
+  protected String label = null;
+
+  /**
+   * Number format, set to print the actual score
+   */
+  private NumberFormat format = null;
+
+  /**
+   * Constructor.
+   */
+  public SVGScoreBar() {
+    // Nothing to do here.
+  }
+
+  /**
+   * Set the fill of the score bar.
+   * 
+   * @param val Value
+   * @param min Minimum value
+   * @param max Maximum value
+   */
+  public void setFill(double val, double min, double max) {
+    this.val = val;
+    this.min = min;
+    this.max = max;
+  }
+
+  /**
+   * Set the reversed flag.
+   * 
+   * @param reversed Reversed flag.
+   */
+  public void setReversed(boolean reversed) {
+    this.reversed = reversed;
+  }
+
+  /**
+   * Set label (right of the bar)
+   * 
+   * @param text Label text
+   */
+  public void addLabel(String text) {
+    this.label = text;
+  }
+
+  /**
+   * To show score values, set a number format
+   * 
+   * @param format Number format
+   */
+  public void showValues(NumberFormat format) {
+    this.format = format;
+  }
+
+  /**
+   * Build the actual element
+   * 
+   * @param svgp Plot to draw to
+   * @param x X coordinate
+   * @param y Y coordinate
+   * @param width Width
+   * @param height Height
+   * @return new element
+   */
+  public Element build(SVGPlot svgp, double x, double y, double width, double height) {
+    Element barchart = svgp.svgElement(SVGConstants.SVG_G_TAG);
+
+    // TODO: use style library for colors!
+    Element bar = svgp.svgRect(x, y, width, height);
+    bar.setAttribute(SVGConstants.SVG_FILL_ATTRIBUTE, "#a0a0a0");
+    bar.setAttribute(SVGConstants.SVG_STROKE_ATTRIBUTE, "#a0a0a0");
+    bar.setAttribute(SVGConstants.SVG_STROKE_WIDTH_ATTRIBUTE, String.valueOf(height * 0.01));
+    barchart.appendChild(bar);
+
+    if(val >= min && val <= max && min < max) {
+      final double frame = 0.02 * height;
+      double fpos = (val - min) / (max - min) * (width - 2 * frame);
+      Element chart;
+      if(reversed) {
+        chart = svgp.svgRect(x + frame + fpos, y + frame, width - fpos - 2 * frame, height - 2 * frame);
+      }
+      else {
+        chart = svgp.svgRect(x + frame, y + frame, fpos, height - 2 * frame);
+      }
+      chart.setAttribute(SVGConstants.SVG_FILL_ATTRIBUTE, "#d4e4f1");
+      chart.setAttribute(SVGConstants.SVG_STROKE_ATTRIBUTE, "#a0a0a0");
+      chart.setAttribute(SVGConstants.SVG_STROKE_WIDTH_ATTRIBUTE, String.valueOf(height * 0.01));
+      barchart.appendChild(chart);
+    }
+
+    // Draw the values:
+    if(format != null) {
+      String num = Double.isNaN(val) ? "NaN" : format.format(val);
+      Element lbl = svgp.svgText(x + 0.05 * width, y + 0.75 * height, num);
+      lbl.setAttribute(SVGConstants.SVG_STYLE_ATTRIBUTE, "font-size: " + 0.75 * height + "; font-weight: bold");
+      barchart.appendChild(lbl);
+    }
+
+    // Draw the label
+    if(label != null) {
+      Element lbl = svgp.svgText(x + 1.05 * width, y + 0.75 * height, label);
+      lbl.setAttribute(SVGConstants.SVG_STYLE_ATTRIBUTE, "font-size: " + 0.75 * height + "; font-weight: normal");
+      barchart.appendChild(lbl);
+    }
+    return barchart;
+  }
+}
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