thermometerplot.java

大家打开看看啊, 很有用的东西

    /**
     * Sets the lower and upper bounds for the thermometer.
     *
     * @param lower  the lower bound.
     * @param upper  the upper bound.
     */
    public void setRange(double lower, double upper) {
        this.lowerBound = lower;
        this.upperBound = upper;
        setAxisRange();
    }

    /**
     * Returns the padding for the thermometer.  This is the space inside the plot area.
     *
     * @return the padding.
     */
    public Spacer getPadding() {
        return this.padding;
    }

    /**
     * Sets the padding for the thermometer.
     *
     * @param padding  the padding.
     */
    public void setPadding(Spacer padding) {
        this.padding = padding;
        notifyListeners(new PlotChangeEvent(this));
    }

    /**
     * Returns the stroke used to draw the thermometer outline.
     *
     * @return the stroke.
     */
    public Stroke getThermometerStroke() {
        return this.thermometerStroke;
    }

    /**
     * Sets the stroke used to draw the thermometer outline.
     *
     * @param s  the new stroke (null ignored).
     */
    public void setThermometerStroke(Stroke s) {
        if (s != null) {
            this.thermometerStroke = s;
            notifyListeners(new PlotChangeEvent(this));
        }
    }

    /**
     * Returns the paint used to draw the thermometer outline.
     *
     * @return the paint.
     */
    public Paint getThermometerPaint() {
        return this.thermometerPaint;
    }

    /**
     * Sets the paint used to draw the thermometer outline.
     *
     * @param paint  the new paint (null ignored).
     */
    public void setThermometerPaint(Paint paint) {
        if (paint != null) {
            this.thermometerPaint = paint;
            notifyListeners(new PlotChangeEvent(this));
        }
    }

    /**
     * Returns the unit display type (none/Fahrenheit/Celcius/Kelvin).
     *
     * @return  the units type.
     */
    public int getUnits() {
        return units;
    }

    /**
     * Sets the units to be displayed in the thermometer.
     * <p>
     * Use one of the following constants:
     *
     * <ul>
     * <li>UNITS_NONE : no units displayed.</li>
     * <li>UNITS_FAHRENHEIT : units displayed in Fahrenheit.</li>
     * <li>UNITS_CELCIUS : units displayed in Celcius.</li>
     * <li>UNITS_KELVIN : units displayed in Kelvin.</li>
     * </ul>
     *
     * @param u  the new unit type.
     */
    public void setUnits(int u) {
        if ((u >= 0) && (u < UNITS.length)) {
            if (this.units != u) {
                this.units = u;
                notifyListeners(new PlotChangeEvent(this));
            }
        }
    }

    /**
     * Sets the unit type.
     *
     * @param u  the unit type (null ignored).
     */
    public void setUnits(String u) {
        if (u == null) {
            return;
        }

        u = u.toUpperCase().trim();
        for (int i = 0; i < UNITS.length; ++i) {
            if (u.equals(UNITS[i].toUpperCase().trim())) {
                setUnits(i);
                i = UNITS.length;
            }
        }
    }

    /**
     * Returns the value location.
     *
     * @return the location.
     */
    public int getValueLocation() {
        return this.valueLocation;
    }

    /**
     * Sets the location at which the current value is displayed.
     * <P>
     * The location can be one of the constants:  <code>NONE</code>, <code>RIGHT</code> and 
     * <code>BULB</code>.
     *
     * @param location  the location.
     */
    public void setValueLocation(int location) {
        if ((location >= 0) && (location < 3)) {
            valueLocation = location;
            notifyListeners(new PlotChangeEvent(this));
        }
        else {
            throw new IllegalArgumentException(
                "ThermometerPlot.setDisplayLocation: location not recognised.");
        }
    }

    /**
     * Gets the font used to display the current value.
     *
     * @return The font.
     */
    public Font getValueFont() {
        return this.valueFont;
    }

    /**
     * Sets the font used to display the current value.
     *
     * @param f  the new font.
     */
    public void setValueFont(Font f) {
        if ((f != null) && (!this.valueFont.equals(f))) {
            this.valueFont = f;
            notifyListeners(new PlotChangeEvent(this));
        }
    }

    /**
     * Gets the paint used to display the current value.
     *
     * @return  the paint.
     */
    public Paint getValuePaint() {
        return this.valuePaint;
    }

    /**
     * Sets the paint used to display the current value.
     *
     * @param p  the new paint.
     */
    public void setValuePaint(Paint p) {
        if ((p != null) && (!this.valuePaint.equals(p))) {
            this.valuePaint = p;
            notifyListeners(new PlotChangeEvent(this));
        }
    }

    /**
     * Sets the formatter for the value label.
     *
     * @param formatter  the new formatter.
     */
    public void setValueFormat(NumberFormat formatter) {
        if (formatter != null) {
            this.valueFormat = formatter;
            notifyListeners(new PlotChangeEvent(this));
        }
    }

    /**
     * Returns the default mercury paint.
     *
     * @return the paint.
     */
    public Paint getMercuryPaint() {
        return this.mercuryPaint;
    }

    /**
     * Sets the default mercury paint.
     *
     * @param paint  the new paint.
     */
    public void setMercuryPaint(Paint paint) {
        this.mercuryPaint = paint;
        notifyListeners(new PlotChangeEvent(this));
    }

    /**
     * Returns the flag that controls whether not value lines are displayed.
     *
     * @return the flag.
     */
    public boolean getShowValueLines() {
        return this.showValueLines;
    }

    /**
     * Sets the display as to whether to show value lines in the output.
     *
     * @param b Whether to show value lines in the thermometer
     */
    public void setShowValueLines(boolean b) {
        this.showValueLines = b;
        notifyListeners(new PlotChangeEvent(this));
    }

    /**
     * Sets information for a particular range.
     *
     * @param range  the range to specify information about.
     * @param low  the low value for the range
     * @param hi  the high value for the range
     */
    public void setSubrangeInfo(int range, double low, double hi) {
        setSubrangeInfo(range, low, hi, low, hi);
    }

    /**
     * Sets the subrangeInfo attribute of the ThermometerPlot object
     *
     * @param range  the new rangeInfo value.
     * @param rangeLow  the new rangeInfo value
     * @param rangeHigh  the new rangeInfo value
     * @param displayLow  the new rangeInfo value
     * @param displayHigh  the new rangeInfo value
     */
    public void setSubrangeInfo(int range,
                                double rangeLow, double rangeHigh,
                                double displayLow, double displayHigh) {

        if ((range >= 0) && (range < 3)) {
            setSubrange(range, rangeLow, rangeHigh);
            setDisplayRange(range, displayLow, displayHigh);
            setAxisRange();
            notifyListeners(new PlotChangeEvent(this));
        }

    }

    /**
     * Sets the range.
     *
     * @param range  the range type.
     * @param low  the low value.
     * @param high  the high value.
     */
    public void setSubrange(int range, double low, double high) {
        if ((range >= 0) && (range < 3)) {
            subrangeInfo[range][RANGE_HIGH] = high;
            subrangeInfo[range][RANGE_LOW] = low;
        }
    }

    /**
     * Sets the display range.
     *
     * @param range  the range type.
     * @param low  the low value.
     * @param high  the high value.
     */
    public void setDisplayRange(int range, double low, double high) {

        if ((range >= 0) && (range < subrangeInfo.length)
            && isValidNumber(high) && isValidNumber(low)) {

            if (high > low) {
                subrangeInfo[range][DISPLAY_HIGH] = high;
                subrangeInfo[range][DISPLAY_LOW] = low;
            }
            else {
                subrangeInfo[range][DISPLAY_HIGH] = high;
                subrangeInfo[range][DISPLAY_LOW] = low;
            }

        }

    }

    /**
     * Gets the paint used for a particular subrange.
     *
     * @param range  the range.
     *
     * @return the paint.
     */
    public Paint getSubrangePaint(int range) {

        if ((range >= 0) && (range < subrangePaint.length)) {
            return subrangePaint[range];
        }
        else {
            return this.mercuryPaint;
        }

    }

    /**
     * Sets the paint to be used for a range.
     *
     * @param range  the range.
     * @param paint  the paint to be applied.
     */
    public void setSubrangePaint(int range, Paint paint) {
        if ((range >= 0) && (range < subrangePaint.length) && (paint != null)) {
            subrangePaint[range] = paint;
            notifyListeners(new PlotChangeEvent(this));
        }
    }

    /**
     * Returns a flag that controls whether or not the thermometer axis zooms to display the
     * subrange within which the data value falls.
     *
     * @return the flag.
     */
    public boolean getFollowDataInSubranges() {
        return this.followDataInSubranges;
    }

    /**
     * Sets the flag that controls whether or not the thermometer axis zooms to display the
     * subrange within which the data value falls.
     *
     * @param flag  the flag.
     */
    public void setFollowDataInSubranges(boolean flag) {
        this.followDataInSubranges = flag;
        notifyListeners(new PlotChangeEvent(this));
    }

    /**
     * Returns a flag that controls whether or not the mercury color changes for each
     * subrange.
     *
     * @return the flag.
     */
    public boolean getUseSubrangePaint() {
        return this.useSubrangePaint;
    }

    /**
     * Sets the range colour change option.
     *
     * @param flag The new range colour change option
     */
    public void setUseSubrangePaint(boolean flag) {
        this.useSubrangePaint = flag;
        notifyListeners(new PlotChangeEvent(this));
    }


    /**
     * Draws the plot on a Java 2D graphics device (such as the screen or a printer).
     *
     * @param g2  the graphics device.
     * @param plotArea  the area within which the plot should be drawn.
     * @param info  collects info about the drawing.
     */
    public void draw(Graphics2D g2, Rectangle2D plotArea, ChartRenderingInfo info) {
        RoundRectangle2D outerStem = new RoundRectangle2D.Double();
        RoundRectangle2D innerStem = new RoundRectangle2D.Double();
        RoundRectangle2D mercuryStem = new RoundRectangle2D.Double();
        Ellipse2D outerBulb = new Ellipse2D.Double();
        Ellipse2D innerBulb = new Ellipse2D.Double();
        String temp = null;
        FontMetrics metrics = null;
        if (info != null) {
            info.setPlotArea(plotArea);
        }

        // adjust for insets...
        Insets insets = getInsets();
        if (insets != null) {
            plotArea.setRect(plotArea.getX() + insets.left,
            plotArea.getY() + insets.top,
            plotArea.getWidth() - insets.left - insets.right,
            plotArea.getHeight() - insets.top - insets.bottom);
        }
        drawBackground(g2, plotArea);

        // adjust for padding...
        //this.padding.trim(plotArea);

        int midX = (int) (plotArea.getX() + (plotArea.getWidth() / 2));
        int midY = (int) (plotArea.getY() + (plotArea.getHeight() / 2));
        int stemTop = (int) (plotArea.getMinY() + BULB_RADIUS);
        int stemBottom  = (int) (plotArea.getMaxY() - BULB_DIAMETER);
        Rectangle2D dataArea = new Rectangle2D.Double(midX - COLUMN_RADIUS,
                                                      stemTop,
                                                      COLUMN_RADIUS,
                                                      stemBottom - stemTop);

        outerBulb.setFrame(midX - BULB_RADIUS,
                           stemBottom,
                           BULB_DIAMETER,
                           BULB_DIAMETER);

        outerStem.setRoundRect(midX - COLUMN_RADIUS,
                               plotArea.getMinY(),
                               COLUMN_DIAMETER,
                               stemBottom + BULB_DIAMETER - stemTop,