?? meterplot.java
字號:
return this.tickLabelsVisible;
}
/**
* Sets the flag that controls whether or not the tick labels are visible
* and sends a {@link PlotChangeEvent} to all registered listeners.
*
* @param visible the flag.
*/
public void setTickLabelsVisible(boolean visible) {
if (this.tickLabelsVisible != visible) {
this.tickLabelsVisible = visible;
notifyListeners(new PlotChangeEvent(this));
}
}
/**
* Returns the tick label font.
*
* @return The font (never <code>null</code>).
*/
public Font getTickLabelFont() {
return this.tickLabelFont;
}
/**
* Sets the tick label font and sends a {@link PlotChangeEvent} to all
* registered listeners.
*
* @param font the font (<code>null</code> not permitted).
*/
public void setTickLabelFont(Font font) {
if (font == null) {
throw new IllegalArgumentException("Null 'font' argument.");
}
if (!this.tickLabelFont.equals(font)) {
this.tickLabelFont = font;
notifyListeners(new PlotChangeEvent(this));
}
}
/**
* Returns the tick label paint.
*
* @return The paint (never <code>null</code>).
*/
public Paint getTickLabelPaint() {
return this.tickLabelPaint;
}
/**
* Sets the tick label paint and sends a {@link PlotChangeEvent} to all
* registered listeners.
*
* @param paint the paint (<code>null</code> not permitted).
*/
public void setTickLabelPaint(Paint paint) {
if (paint == null) {
throw new IllegalArgumentException("Null 'paint' argument.");
}
if (!this.tickLabelPaint.equals(paint)) {
this.tickLabelPaint = paint;
notifyListeners(new PlotChangeEvent(this));
}
}
/**
* Returns the tick label format.
*
* @return The tick label format (never <code>null</code>).
*/
public NumberFormat getTickLabelFormat() {
return this.tickLabelFormat;
}
/**
* Sets the format for the tick labels and sends a {@link PlotChangeEvent}
* to all registered listeners.
*
* @param format the format (<code>null</code> not permitted).
*/
public void setTickLabelFormat(NumberFormat format) {
if (format == null) {
throw new IllegalArgumentException("Null 'format' argument.");
}
this.tickLabelFormat = format;
notifyListeners(new PlotChangeEvent(this));
}
/**
* Returns the font for the value label.
*
* @return The font (never <code>null</code>).
*/
public Font getValueFont() {
return this.valueFont;
}
/**
* Sets the font used to display the value label and sends a
* {@link PlotChangeEvent} to all registered listeners.
*
* @param font the font (<code>null</code> not permitted).
*/
public void setValueFont(Font font) {
if (font == null) {
throw new IllegalArgumentException("Null 'font' argument.");
}
this.valueFont = font;
notifyListeners(new PlotChangeEvent(this));
}
/**
* Returns the paint for the value label.
*
* @return The paint (never <code>null</code>).
*/
public Paint getValuePaint() {
return this.valuePaint;
}
/**
* Sets the paint used to display the value label and sends a
* {@link PlotChangeEvent} to all registered listeners.
*
* @param paint the paint (<code>null</code> not permitted).
*/
public void setValuePaint(Paint paint) {
if (paint == null) {
throw new IllegalArgumentException("Null 'paint' argument.");
}
this.valuePaint = paint;
notifyListeners(new PlotChangeEvent(this));
}
/**
* Returns the paint for the dial background.
*
* @return The paint (possibly <code>null</code>).
*/
public Paint getDialBackgroundPaint() {
return this.dialBackgroundPaint;
}
/**
* Sets the paint used to fill the dial background. Set this to
* <code>null</code> for no background.
*
* @param paint the paint (<code>null</code> permitted).
*/
public void setDialBackgroundPaint(Paint paint) {
this.dialBackgroundPaint = paint;
notifyListeners(new PlotChangeEvent(this));
}
/**
* Returns a flag that controls whether or not a rectangular border is
* drawn around the plot area.
*
* @return A flag.
*/
public boolean getDrawBorder() {
return this.drawBorder;
}
/**
* Sets the flag that controls whether or not a rectangular border is drawn
* around the plot area and sends a {@link PlotChangeEvent} to all
* registered listeners.
*
* @param draw the flag.
*/
public void setDrawBorder(boolean draw) {
// TODO: fix output when this flag is set to true
this.drawBorder = draw;
notifyListeners(new PlotChangeEvent(this));
}
/**
* Returns the dial outline paint.
*
* @return The paint.
*/
public Paint getDialOutlinePaint() {
return this.dialOutlinePaint;
}
/**
* Sets the dial outline paint and sends a {@link PlotChangeEvent} to all
* registered listeners.
*
* @param paint the paint.
*/
public void setDialOutlinePaint(Paint paint) {
this.dialOutlinePaint = paint;
notifyListeners(new PlotChangeEvent(this));
}
/**
* Returns the dataset for the plot.
*
* @return The dataset (possibly <code>null</code>).
*/
public ValueDataset getDataset() {
return this.dataset;
}
/**
* Sets the dataset for the plot, replacing the existing dataset if there
* is one, and triggers a {@link PlotChangeEvent}.
*
* @param dataset the dataset (<code>null</code> permitted).
*/
public void setDataset(ValueDataset dataset) {
// if there is an existing dataset, remove the plot from the list of
// change listeners...
ValueDataset existing = this.dataset;
if (existing != null) {
existing.removeChangeListener(this);
}
// set the new dataset, and register the chart as a change listener...
this.dataset = dataset;
if (dataset != null) {
setDatasetGroup(dataset.getGroup());
dataset.addChangeListener(this);
}
// send a dataset change event to self...
DatasetChangeEvent event = new DatasetChangeEvent(this, dataset);
datasetChanged(event);
}
/**
* Returns an unmodifiable list of the intervals for the plot.
*
* @return A list.
*/
public List getIntervals() {
return Collections.unmodifiableList(this.intervals);
}
/**
* Adds an interval and sends a {@link PlotChangeEvent} to all registered
* listeners.
*
* @param interval the interval (<code>null</code> not permitted).
*/
public void addInterval(MeterInterval interval) {
if (interval == null) {
throw new IllegalArgumentException("Null 'interval' argument.");
}
this.intervals.add(interval);
notifyListeners(new PlotChangeEvent(this));
}
/**
* Clears the intervals for the plot and sends a {@link PlotChangeEvent} to
* all registered listeners.
*/
public void clearIntervals() {
this.intervals.clear();
notifyListeners(new PlotChangeEvent(this));
}
/**
* Returns an item for each interval.
*
* @return A collection of legend items.
*/
public LegendItemCollection getLegendItems() {
LegendItemCollection result = new LegendItemCollection();
Iterator iterator = this.intervals.iterator();
while (iterator.hasNext()) {
MeterInterval mi = (MeterInterval) iterator.next();
Paint color = mi.getBackgroundPaint();
if (color == null) {
color = mi.getOutlinePaint();
}
LegendItem item = new LegendItem(mi.getLabel(), mi.getLabel(),
null, null, new Rectangle2D.Double(-4.0, -4.0, 8.0, 8.0),
color);
result.add(item);
}
return result;
}
/**
* Draws the plot on a Java 2D graphics device (such as the screen or a
* printer).
*
* @param g2 the graphics device.
* @param area the area within which the plot should be drawn.
* @param anchor the anchor point (<code>null</code> permitted).
* @param parentState the state from the parent plot, if there is one.
* @param info collects info about the drawing.
*/
public void draw(Graphics2D g2, Rectangle2D area, Point2D anchor,
PlotState parentState,
PlotRenderingInfo info) {
if (info != null) {
info.setPlotArea(area);
}
// adjust for insets...
RectangleInsets insets = getInsets();
insets.trim(area);
area.setRect(
area.getX() + 4, area.getY() + 4,
area.getWidth() - 8, area.getHeight() - 8
);
// draw the background
if (this.drawBorder) {
drawBackground(g2, area);
}
// adjust the plot area by the interior spacing value
double gapHorizontal = (2 * DEFAULT_BORDER_SIZE);
double gapVertical = (2 * DEFAULT_BORDER_SIZE);
double meterX = area.getX() + gapHorizontal / 2;
double meterY = area.getY() + gapVertical / 2;
double meterW = area.getWidth() - gapHorizontal;
double meterH = area.getHeight() - gapVertical
+ ((this.meterAngle <= 180) && (this.shape != DialShape.CIRCLE)
? area.getHeight() / 1.25 : 0);
double min = Math.min(meterW, meterH) / 2;
meterX = (meterX + meterX + meterW) / 2 - min;
meterY = (meterY + meterY + meterH) / 2 - min;
meterW = 2 * min;
meterH = 2 * min;
Rectangle2D meterArea = new Rectangle2D.Double(
meterX, meterY, meterW, meterH
);
Rectangle2D.Double originalArea = new Rectangle2D.Double(
meterArea.getX() - 4, meterArea.getY() - 4,
meterArea.getWidth() + 8, meterArea.getHeight() + 8
);
double meterMiddleX = meterArea.getCenterX();
double meterMiddleY = meterArea.getCenterY();
// plot the data (unless the dataset is null)...
ValueDataset data = getDataset();
if (data != null) {
double dataMin = this.range.getLowerBound();
double dataMax = this.range.getUpperBound();
Shape savedClip = g2.getClip();
g2.clip(originalArea);
Composite originalComposite = g2.getComposite();
g2.setComposite(AlphaComposite.getInstance(
AlphaComposite.SRC_OVER, getForegroundAlpha())
);
if (this.dialBackgroundPaint != null) {
fillArc(
g2, originalArea, dataMin, dataMax,
this.dialBackgroundPaint, true
);
}
drawTicks(g2, meterArea, dataMin, dataMax);
drawArcForInterval(
g2, meterArea,
new MeterInterval(
"", this.range, this.dialOutlinePaint,
new BasicStroke(1.0f), null
)
);
Iterator iterator = this.intervals.iterator();
while (iterator.hasNext()) {
MeterInterval interval = (MeterInterval) iterator.next();
drawArcForInterval(g2, meterArea, interval);
}
Number n = data.getValue();
if (n != null) {
double value = n.doubleValue();
drawValueLabel(g2, meterArea);
if (this.range.contains(value)) {
g2.setPaint(this.needlePaint);
g2.setStroke(new BasicStroke(2.0f));
double radius = (meterArea.getWidth() / 2)
+ DEFAULT_BORDER_SIZE + 15;
double valueAngle = valueToAngle(value);
double valueP1 = meterMiddleX
+ (radius * Math.cos(Math.PI * (valueAngle / 180)));
double valueP2 = meterMiddleY
- (radius * Math.sin(Math.PI * (valueAngle / 180)));
Polygon arrow = new Polygon();
if ((valueAngle > 135 && valueAngle < 225)
|| (valueAngle < 45 && valueAngle > -45)) {
double valueP3 = (meterMiddleY
- DEFAULT_CIRCLE_SIZE / 4);
double valueP4 = (meterMiddleY
+ DEFAULT_CIRCLE_SIZE / 4);
arrow.addPoint((int) meterMiddleX, (int) valueP3);
arrow.addPoint((int) meterMiddleX, (int) valueP4);
}
else {
arrow.addPoint(
(int) (meterMiddleX - DEFAULT_CIRCLE_SIZE / 4),
(int) meterMiddleY
);
arrow.addPoint(
(int) (meterMiddleX + DEFAULT_CIRCLE_SIZE / 4),
(int) meterMiddleY
);
}
arrow.addPoint((int) valueP1, (int) valueP2);
g2.fill(arrow);
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