thermometerplot.java

jfreechart安装程序和使用说明

      Area mercury = new Area(innerBulb);

      if (k < (stemBottom + BULB_RADIUS)) {
        mercuryStem.setRoundRect(midX - j, k, i, (stemBottom + BULB_RADIUS) - k,
                                 l, l);
        tempArea = new Area(mercuryStem);
        mercury.add(tempArea);
      }

      g2.setPaint(getCurrentPaint());
      g2.fill(mercury);

      // draw range indicators...
      if (this.subrangeIndicatorsVisible) {
        g2.setStroke(this.subrangeIndicatorStroke);
        Range range = this.rangeAxis.getRange();

        // draw start of normal range
        double value = this.subrangeInfo[NORMAL][RANGE_LOW];
        if (range.contains(value)) {
          double x = midX + COLUMN_RADIUS + 2;
          double y = this.rangeAxis.valueToJava2D(value, dataArea, RectangleEdge.LEFT);
          Line2D line = new Line2D.Double(x, y, x + 10, y);
          g2.setPaint(this.subrangePaint[NORMAL]);
          g2.draw(line);
        }

        // draw start of warning range
        value = this.subrangeInfo[WARNING][RANGE_LOW];
        if (range.contains(value)) {
          double x = midX + COLUMN_RADIUS + 2;
          double y = this.rangeAxis.valueToJava2D(value, dataArea, RectangleEdge.LEFT);
          Line2D line = new Line2D.Double(x, y, x + 10, y);
          g2.setPaint(this.subrangePaint[WARNING]);
          g2.draw(line);
        }

        // draw start of critical range
        value = this.subrangeInfo[CRITICAL][RANGE_LOW];
        if (range.contains(value)) {
          double x = midX + COLUMN_RADIUS + 2;
          double y = this.rangeAxis.valueToJava2D(value, dataArea, RectangleEdge.LEFT);
          Line2D line = new Line2D.Double(x, y, x + 10, y);
          g2.setPaint(this.subrangePaint[CRITICAL]);
          g2.draw(line);
        }
      }

      // draw the axis...
      if ((this.rangeAxis != null) && (this.axisLocation != NONE)) {
        int drawWidth = AXIS_GAP;
        if (this.showValueLines) {
          drawWidth += COLUMN_DIAMETER;
        }
        Rectangle2D drawArea;
        double cursor = 0;

        switch (this.axisLocation) {
          case RIGHT:
            cursor = midX + COLUMN_RADIUS;
            drawArea = new Rectangle2D.Double(
                cursor,
                stemTop,
                drawWidth,
                (stemBottom - stemTop + 1)
                );
            this.rangeAxis.draw(g2, cursor, plotArea, drawArea, RectangleEdge.RIGHT, null);
            break;

          case LEFT:
          default:
            //cursor = midX - COLUMN_RADIUS - AXIS_GAP;
            cursor = midX - COLUMN_RADIUS;
            drawArea = new Rectangle2D.Double(
                cursor,
                stemTop,
                drawWidth,
                (stemBottom - stemTop + 1)
                );
            this.rangeAxis.draw(g2, cursor, plotArea, drawArea, RectangleEdge.LEFT, null);
            break;
        }
        //cursor = state.getCursor();
      }

      // draw text value on screen
      g2.setFont(this.valueFont);
      g2.setPaint(this.valuePaint);
      metrics = g2.getFontMetrics();
      switch (this.valueLocation) {
        case RIGHT:
          g2.drawString(this.valueFormat.format(current),
                        midX + COLUMN_RADIUS + GAP_RADIUS, midY);
          break;
        case LEFT:
          String valueString = this.valueFormat.format(current);
          int stringWidth = metrics.stringWidth(valueString);
          g2.drawString(valueString,
                        midX - COLUMN_RADIUS - GAP_RADIUS - stringWidth,
                        midY);
          break;
        case BULB:
          temp = this.valueFormat.format(current);
          i = metrics.stringWidth(temp) / 2;
          g2.drawString(temp, midX - i, stemBottom + BULB_RADIUS + GAP_RADIUS);
          break;
        default:
      }
      /***/
    }

    g2.setPaint(this.thermometerPaint);
    g2.setFont(this.valueFont);

    //  draw units indicator
    metrics = g2.getFontMetrics();
    int tickX1 = midX - COLUMN_RADIUS - GAP_DIAMETER - metrics.stringWidth(UNITS[this.units]);
    if (tickX1 > plotArea.getMinX()) {
      g2.drawString(UNITS[this.units], tickX1, (int) (plotArea.getMinY() + 20));
    }

    // draw thermometer outline
    g2.setStroke(this.thermometerStroke);
    g2.draw(outerThermometer);
    g2.draw(innerThermometer);

    drawOutline(g2, plotArea);
  }

  /**
   * A zoom method that does nothing.  Plots are required to support the zoom operation.  In the 
   * case of a thermometer chart, it doesn't make sense to zoom in or out, so the
   * method is empty.
   *
   * @param percent  the zoom percentage.
   */
  public void zoom(double percent) {
      // intentionally blank
  }

  /**
   * Returns a short string describing the type of plot.
   *
   * @return  a short string describing the type of plot.
   */
  public String getPlotType() {
    return localizationResources.getString("Thermometer_Plot");
  }

  /**
   * Checks to see if a new value means the axis range needs adjusting.
   *
   * @param event  the dataset change event.
   */
  public void datasetChanged(DatasetChangeEvent event) {

    Number vn = this.dataset.getValue();
    if (vn != null) {
      double value = vn.doubleValue();
      if (inSubrange(NORMAL, value)) {
        this.subrange = NORMAL;
      }
      else if (inSubrange(WARNING, value)) {
        this.subrange = WARNING;
      }
      else if (inSubrange(CRITICAL, value)) {
        this.subrange = CRITICAL;
      }
      else {
        this.subrange = -1;
      }
      setAxisRange();
    }
    super.datasetChanged(event);
  }

  /**
   * Returns the minimum value in either the domain or the range, whichever
   * is displayed against the vertical axis for the particular type of plot
   * implementing this interface.
   *
   * @return the minimum value in either the domain or the range.
   */
  public Number getMinimumVerticalDataValue() {
    return new Double(this.lowerBound);
  }

  /**
   * Returns the maximum value in either the domain or the range, whichever
   * is displayed against the vertical axis for the particular type of plot
   * implementing this interface.
   *
   * @return the maximum value in either the domain or the range
   */
  public Number getMaximumVerticalDataValue() {
    return new Double(this.upperBound);
  }

  /**
   * Returns the data range.
   *
   * @param axis  the axis.
   *
   * @return The range of data displayed.
   */
  public Range getDataRange(ValueAxis axis) {
    return new Range(this.lowerBound, this.upperBound);
  }

  /**
   * Sets the axis range to the current values in the rangeInfo array.
   */
  protected void setAxisRange() {
    if ((this.subrange >= 0) && (this.followDataInSubranges)) {
        this.rangeAxis.setRange(new Range(this.subrangeInfo[this.subrange][DISPLAY_LOW],
                this.subrangeInfo[this.subrange][DISPLAY_HIGH]));
    }
    else {
        this.rangeAxis.setRange(this.lowerBound, this.upperBound);
    }
  }

  /**
   * Returns null, since the thermometer plot won't require a legend.
   *
   * @return null.
   *
   * @deprecated use getLegendItems().
   */
  public List getLegendItemLabels() {
    return null;
  }

  /**
   * Returns the legend items for the plot.
   *
   * @return null.
   */
  public LegendItemCollection getLegendItems() {
    return null;
  }

  /**
   * Returns the vertical value axis.
   * <p>
   * This is required by the VerticalValuePlot interface, but not used in this class.
   *
   * @return the vertical value axis.
   */
  public ValueAxis getVerticalValueAxis() {
    return this.rangeAxis;
  }

  /**
   * Determine whether a number is valid and finite.
   *
   * @param d  the number to be tested.
   *
   * @return true if the number is valid and finite, and false otherwise.
   */
  protected static boolean isValidNumber(double d) {
    return (!(Double.isNaN(d) || Double.isInfinite(d)));
  }

  /**
   * Returns true if the value is in the specified range, and false otherwise.
   *
   * @param subrange  the subrange.
   * @param value  the value to check.
   *
   * @return true or false.
   */
  private boolean inSubrange(int subrange, double value) {
    return (value > this.subrangeInfo[subrange][RANGE_LOW]
            && value <= this.subrangeInfo[subrange][RANGE_HIGH]);
  }

  /**
   * Returns the mercury paint corresponding to the current data value.
   *
   * @return the paint.
   */
  private Paint getCurrentPaint() {

    Paint result = this.mercuryPaint;
    if (this.useSubrangePaint) {
      double value = this.dataset.getValue().doubleValue();
      if (inSubrange(NORMAL, value)) {
        result = this.subrangePaint[NORMAL];
      }
      else if (inSubrange(WARNING, value)) {
        result = this.subrangePaint[WARNING];
      }
      else if (inSubrange(CRITICAL, value)) {
        result = this.subrangePaint[CRITICAL];
      }
    }
    return result;
  }

  /**
   * Tests this plot for equality with another object.
   *
   * @param obj  the object.
   *
   * @return <code>true</code> or <code>false</code>.
   */
  public boolean equals(Object obj) {

    if (obj == null) {
      return false;
    }

    if (obj == this) {
      return true;
    }

    if (obj instanceof ThermometerPlot) {
      ThermometerPlot p = (ThermometerPlot) obj;
      if (super.equals(obj)) {
        boolean b0 = ObjectUtils.equal(this.dataset, p.dataset);
        boolean b1 = ObjectUtils.equal(this.rangeAxis, p.rangeAxis);
        boolean b2 = (this.lowerBound == p.lowerBound);
        boolean b3 = (this.upperBound == p.upperBound);
        boolean b4 = ObjectUtils.equal(this.padding, p.padding);
        boolean b5 = ObjectUtils.equal(this.thermometerStroke,
                                       p.thermometerStroke);
        boolean b6 = ObjectUtils.equal(this.thermometerPaint,
                                       p.thermometerPaint);
        boolean b7 = (this.units == p.units);
        boolean b8 = (this.valueLocation == p.valueLocation);
        boolean b9 = ObjectUtils.equal(this.valueFont, p.valueFont);
        boolean b10 = ObjectUtils.equal(this.valuePaint, p.valuePaint);
        boolean b11 = ObjectUtils.equal(this.valueFormat, p.valueFormat);
        boolean b12 = ObjectUtils.equal(this.mercuryPaint, p.mercuryPaint);
        boolean b13 = (this.showValueLines == p.showValueLines);
        boolean b14 = (this.subrange == p.subrange);
        boolean b15 = true; //Arrays.equals(this.subRangeInfo, p.subRangeInfo);
        boolean b16 = (this.followDataInSubranges == p.followDataInSubranges);
        boolean b17 = (this.useSubrangePaint == p.useSubrangePaint);
        return b0 && b1 && b2 && b3 && b4 && b5 && b6 && b7 && b8 && b9
            && b10 && b11 && b12 && b13 && b14 && b15 && b16 && b17;

      }
    }

    return false;

  }

  /**
   * Returns a clone of the plot.
   *
   * @return A clone.
   *
   * @throws CloneNotSupportedException  if the plot cannot be cloned.
   */
  public Object clone() throws CloneNotSupportedException {

    ThermometerPlot clone = (ThermometerPlot) super.clone();

    //private ValueDataset dataset <-- don't clone the dataset
    if (clone.dataset != null) {
      clone.dataset.addChangeListener(clone);
    }
    clone.rangeAxis = (ValueAxis) ObjectUtils.clone(this.rangeAxis);
    if (clone.rangeAxis != null) {
      clone.rangeAxis.setPlot(clone);
      clone.rangeAxis.addChangeListener(clone);
    }
    //private double lowerBound <-- primitive
    //private double upperBound <-- primitive
    //private Spacer padding <-- immutable
    //private transient Stroke thermometerStroke <-- immutable
    //private transient Paint thermometerPaint <-- immutable
    //private int units <-- primitive
    //private int valueLocation <-- primitive
    //private Font valueFont <-- immutable
    //private transient Paint valuePaint<-- immutable
    clone.valueFormat = (NumberFormat) this.valueFormat.clone();
    //private transient Paint mercuryPaint <-- immutable
    //private boolean showValueLines <-- primitive
    //private int subrange <-- primitive
    //private double[][] subrangeInfo ????????????????
    //private boolean followDataInSubranges <-- primitive
    //private boolean useSubrangePaint <-- primitive
    clone.subrangePaint = (Paint[]) this.subrangePaint.clone();
    //private boolean subrangeIndicatorsVisible <-- primitive
    //private transient Stroke subrangeIndicatorStroke <-- immutable
    //private transient Stroke rangeIndicatorStroke <-- immutable

    return clone;

  }

  /**
   * Provides serialization support.
   *
   * @param stream  the output stream.
   *
   * @throws IOException  if there is an I/O error.
   */
  private void writeObject(ObjectOutputStream stream) throws IOException {
    stream.defaultWriteObject();
    SerialUtilities.writeStroke(this.thermometerStroke, stream);
    SerialUtilities.writePaint(this.thermometerPaint, stream);
    SerialUtilities.writePaint(this.valuePaint, stream);
    SerialUtilities.writePaint(this.mercuryPaint, stream);
    SerialUtilities.writeStroke(this.subrangeIndicatorStroke, stream);
    SerialUtilities.writeStroke(this.rangeIndicatorStroke, stream);
  }

  /**
   * Provides serialization support.
   *
   * @param stream  the input stream.
   *
   * @throws IOException  if there is an I/O error.
   * @throws ClassNotFoundException  if there is a classpath problem.
   */
  private void readObject(ObjectInputStream stream) throws IOException,
      ClassNotFoundException {
    stream.defaultReadObject();
    this.thermometerStroke = SerialUtilities.readStroke(stream);
    this.thermometerPaint = SerialUtilities.readPaint(stream);
    this.valuePaint = SerialUtilities.readPaint(stream);
    this.mercuryPaint = SerialUtilities.readPaint(stream);
    this.subrangeIndicatorStroke = SerialUtilities.readStroke(stream);
    this.rangeIndicatorStroke = SerialUtilities.readStroke(stream);

    if (this.rangeAxis != null) {
      this.rangeAxis.addChangeListener(this);
    }

  }

  /**
   * Multiplies the range on the horizontal axis/axes by the specified factor.
   *
   * @param factor  the zoom factor.
   */
  public void zoomHorizontalAxes(double factor) {
    // do nothing
  }

  /**
   * Multiplies the range on the vertical axis/axes by the specified factor.
   *
   * @param factor  the zoom factor.
   */
  public void zoomVerticalAxes(double factor) {
    // zoom the range axis
  }

  /**
   * Zooms the horizontal axes.
   *
   * @param lowerPercent  the lower percent.
   * @param upperPercent  the upper percent.
   */
  public void zoomHorizontalAxes(double lowerPercent, double upperPercent) {
    // zoom the domain axis
  }

  /**
   * Zooms the vertical axes.
   *
   * @param lowerPercent  the lower percent.
   * @param upperPercent  the upper percent.
   */
  public void zoomVerticalAxes(double lowerPercent, double upperPercent) {
    // zoom the domain axis
  }

}