dive4elements/river: flys-artifacts/src/main/java/de/intevation/flys/jfree/StableXYDifferenceRenderer.java comparison

comparison flys-artifacts/src/main/java/de/intevation/flys/jfree/StableXYDifferenceRenderer.java @ 2666:6da7e064ae90

Allow basic and styled area labels, yet on static position within plot. flys-artifacts/trunk@4344 c6561f87-3c4e-4783-a992-168aeb5c3f6f

author	Felix Wolfsteller <felix.wolfsteller@intevation.de>
date	Thu, 03 May 2012 20:27:01 +0000
parents	b5cc53a84b66
children	b75681c09ef8

comparison

equal deleted inserted replaced

-:bcf4011fa3f1
+:6da7e064ae90
 package de.intevation.flys.jfree;
 import java.awt.BasicStroke;
 import java.awt.Color;
 import java.awt.Graphics2D;
+import java.awt.Font;
 import java.awt.Paint;
 import java.awt.Shape;
 import java.awt.Stroke;
 import java.awt.geom.GeneralPath;
 import java.awt.geom.Line2D;
 public class StableXYDifferenceRenderer extends AbstractXYItemRenderer
 implements XYItemRenderer, PublicCloneable {
 private static Logger log = Logger.getLogger(StableXYDifferenceRenderer.class);
-public static final int CALCULATE_NO_AREA       = 0;
 public static final int CALCULATE_POSITIVE_AREA = 1;
 public static final int CALCULATE_NEGATIVE_AREA = 2;
 public static final int CALCULATE_ALL_AREA =
 CALCULATE_POSITIVE_AREA | CALCULATE_NEGATIVE_AREA;
 /** The shape to display in the legend item. */
 private transient Shape legendShape;
 protected boolean drawOriginalSeries;
+/** The color of the label showing the calculated area. */
+protected Color labelColor;
+/** Font to draw label of calculated area with. */
+protected Font labelFont;
 protected int areaCalculationMode;
 protected double positiveArea;
 protected double negativeArea;
+/** Whether or not to draw a label in the area. */
+protected boolean labelArea = true;
 /**
 * This flag controls whether or not the x-coordinates (in Java2D space)
 * are rounded to integers.  When set to true, this can avoid the vertical
 this(Color.green, Color.red, false /*,  null */);
 }
 public StableXYDifferenceRenderer(Paint positivePaint, Paint negativePaint,
 boolean shapes) {
-this(positivePaint, negativePaint, shapes, CALCULATE_NO_AREA);
+this(positivePaint, negativePaint, shapes, CALCULATE_ALL_AREA);
 }
 /**
 * Creates a new renderer.
 *
 public void setAreaCalculationMode(int areaCalculationMode) {
 this.areaCalculationMode = areaCalculationMode;
 }
+public boolean isLabelArea() {
+return this.labelArea;
+}
+public void setLabelArea(boolean label) {
+this.labelArea = label;
+}
+/** Set font to paint label with. */
+public void setLabelFont(Font font) {
+this.labelFont = font;
+}
+/** Get font with which label is painted. */
+public Font getLabelFont() {
+return this.labelFont;
+}
+/** Set color with which to paint label. */
+public void setLabelColor(Color color) {
+this.labelColor = color;
+}
+/** Get color with which label is painted. */
+public Color getLabelColor() {
+return this.labelColor;
+}
 public double getCalculatedArea() {
 return positiveArea + negativeArea;
 }
 case 1:
 drawItemPass1(g2, dataArea, info,
 plot, domainAxis, rangeAxis,
 dataset, series, item, crosshairState);
 }
+// Find geometric middle, calculate area and paint a string with it here.
+// TODO also i18n
+if (pass == 1 && this.labelArea) {
+float center_x = 100f;
+float center_y = 100f+ pass*50f;
+float area = 0f;
+if (areaCalculationMode == CALCULATE_POSITIVE_AREA
+|| areaCalculationMode == CALCULATE_ALL_AREA) {
+area += Math.abs(positiveArea);
+}
+if (areaCalculationMode == CALCULATE_NEGATIVE_AREA
+|| areaCalculationMode == CALCULATE_ALL_AREA) {
+area += Math.abs(negativeArea);
+}
+// TODO respect text bg settings.
+if (area != 0f) {
+Color oldColor = g2.getColor();
+Font oldFont = g2.getFont();
+g2.setFont(labelFont);
+g2.setColor(labelColor);
+g2.drawString("Area= "+area+"m2", center_x, center_y);
+g2.setFont(oldFont);
+g2.setColor(oldColor);
+}
+}
 }
 /**
 * Draws the visual representation of a single data item, first pass.
 *
 return ((l_minuendLast < l_subtrahendFirst)
 || (l_subtrahendLast < l_minuendFirst));
 }
 public static double calculateArea(Object [] xValues, Object [] yValues) {
 double area = 0d;
 for (int i = 0, N = xValues.length; i < N; ++i) {
 int j = (i + 1) % N;
 RectangleEdge l_rangeAxisLocation  = x_plot.getRangeAxisEdge();
 Object[] l_xValues = x_xValues.toArray();
 Object[] l_yValues = x_yValues.toArray();
-int acm = areaCalculationMode;
+double area = calculateArea(l_xValues, l_yValues);
+if (x_positive) positiveArea += area;
-if (acm != CALCULATE_NO_AREA) {
+else            negativeArea += area;
-if ((x_positive && ((acm|CALCULATE_POSITIVE_AREA)
-== CALCULATE_POSITIVE_AREA))
-|| (!x_positive && ((acm|CALCULATE_NEGATIVE_AREA)
-== CALCULATE_NEGATIVE_AREA))
-) {
-double area = calculateArea(l_xValues, l_yValues);
-if (x_positive) positiveArea += area;
-else            negativeArea += area;
-}
-}
 GeneralPath l_path = new GeneralPath();
 if (PlotOrientation.VERTICAL == l_orientation) {
 double l_x = x_domainAxis.valueToJava2D((

Mercurial > dive4elements > river

comparison flys-artifacts/src/main/java/de/intevation/flys/jfree/StableXYDifferenceRenderer.java @ 2666:6da7e064ae90