/**
* Draws the plot on a Java 2D graphics device (such as the screen or a
* printer). Will perform all the placement calculations for each
* sub-plots and then tell these to draw themselves.
*
* @param g2 the graphics device.
* @param area the area within which the plot (including axis labels)
* should be drawn.
* @param anchor the anchor point (<code>null</code> permitted).
* @param parentState the parent state.
* @param info collects information about the drawing (<code>null</code>
* permitted).
*/
public void draw(Graphics2D g2, Rectangle2D area, Point2D anchor,
PlotState parentState,
PlotRenderingInfo info) {
// set up info collection...
if (info != null) {
info.setPlotArea(area);
}
// adjust the drawing area for plot insets (if any)...
RectangleInsets insets = getInsets();
insets.trim(area);
// calculate the data area...
AxisSpace space = calculateAxisSpace(g2, area);
Rectangle2D dataArea = space.shrink(area, null);
// set the width and height of non-shared axis of all sub-plots
setFixedDomainAxisSpaceForSubplots(space);
// draw the shared axis
ValueAxis axis = getRangeAxis();
RectangleEdge rangeEdge = getRangeAxisEdge();
double cursor = RectangleEdge.coordinate(dataArea, rangeEdge);
AxisState state = axis.draw(g2, cursor, area, dataArea, rangeEdge,
info);
if (parentState == null) {
parentState = new PlotState();
}
parentState.getSharedAxisStates().put(axis, state);
// draw all the charts
for (int i = 0; i < this.subplots.size(); i++) {
CategoryPlot plot = (CategoryPlot) this.subplots.get(i);
PlotRenderingInfo subplotInfo = null;
if (info != null) {
subplotInfo = new PlotRenderingInfo(info.getOwner());
info.addSubplotInfo(subplotInfo);
}
Point2D subAnchor = null;
if (anchor != null && this.subplotArea[i].contains(anchor)) {
subAnchor = anchor;
}
plot.draw(g2, this.subplotArea[i], subAnchor, parentState,
subplotInfo);
}
if (info != null) {
info.setDataArea(dataArea);
}
}
/**
* Returns the content size for the title. This will reflect the fact that a text title positioned
* on the left or right of a chart will be rotated 90 degrees.
*
* @param g2 the graphics device.
* @param widthRange the width range.
* @param heightRange the height range.
* @return The content size.
*/
protected Size2D arrangeRR(Graphics2D g2, Range widthRange, Range heightRange) {
RectangleEdge position = getPosition();
if (position == RectangleEdge.TOP || position == RectangleEdge.BOTTOM) {
float maxWidth = (float) widthRange.getUpperBound();
// determine the space required for the axis
AxisSpace space =
this.axis.reserveSpace(
g2, null, new Rectangle2D.Double(0, 0, maxWidth, 100), RectangleEdge.BOTTOM, null);
return new Size2D(
maxWidth, this.stripWidth + this.axisOffset + space.getTop() + space.getBottom());
} else if (position == RectangleEdge.LEFT || position == RectangleEdge.RIGHT) {
float maxHeight = (float) heightRange.getUpperBound();
AxisSpace space =
this.axis.reserveSpace(
g2, null, new Rectangle2D.Double(0, 0, 100, maxHeight), RectangleEdge.RIGHT, null);
return new Size2D(
this.stripWidth + this.axisOffset + space.getLeft() + space.getRight(), maxHeight);
} else {
throw new RuntimeException("Unrecognised position.");
}
}
/**
* Calculates the space required for the axes.
*
* @param g2 the graphics device.
* @param plotArea the plot area.
* @return The space required for the axes.
*/
@Override
protected AxisSpace calculateAxisSpace(Graphics2D g2, Rectangle2D plotArea) {
AxisSpace space = new AxisSpace();
PlotOrientation orientation = getOrientation();
// work out the space required by the domain axis...
AxisSpace fixed = getFixedRangeAxisSpace();
if (fixed != null) {
if (orientation == PlotOrientation.VERTICAL) {
space.setLeft(fixed.getLeft());
space.setRight(fixed.getRight());
} else if (orientation == PlotOrientation.HORIZONTAL) {
space.setTop(fixed.getTop());
space.setBottom(fixed.getBottom());
}
} else {
ValueAxis valueAxis = getRangeAxis();
RectangleEdge valueEdge = Plot.resolveRangeAxisLocation(getRangeAxisLocation(), orientation);
if (valueAxis != null) {
space = valueAxis.reserveSpace(g2, this, plotArea, valueEdge, space);
}
}
Rectangle2D adjustedPlotArea = space.shrink(plotArea, null);
// work out the maximum height or width of the non-shared axes...
int n = this.subplots.size();
int totalWeight = 0;
for (int i = 0; i < n; i++) {
XYPlot sub = (XYPlot) this.subplots.get(i);
totalWeight += sub.getWeight();
}
// calculate plotAreas of all sub-plots, maximum vertical/horizontal
// axis width/height
this.subplotAreas = new Rectangle2D[n];
double x = adjustedPlotArea.getX();
double y = adjustedPlotArea.getY();
double usableSize = 0.0;
if (orientation == PlotOrientation.VERTICAL) {
usableSize = adjustedPlotArea.getWidth() - this.gap * (n - 1);
} else if (orientation == PlotOrientation.HORIZONTAL) {
usableSize = adjustedPlotArea.getHeight() - this.gap * (n - 1);
}
for (int i = 0; i < n; i++) {
XYPlot plot = (XYPlot) this.subplots.get(i);
// calculate sub-plot area
if (orientation == PlotOrientation.VERTICAL) {
double w = usableSize * plot.getWeight() / totalWeight;
this.subplotAreas[i] = new Rectangle2D.Double(x, y, w, adjustedPlotArea.getHeight());
x = x + w + this.gap;
} else if (orientation == PlotOrientation.HORIZONTAL) {
double h = usableSize * plot.getWeight() / totalWeight;
this.subplotAreas[i] = new Rectangle2D.Double(x, y, adjustedPlotArea.getWidth(), h);
y = y + h + this.gap;
}
AxisSpace subSpace = plot.calculateDomainAxisSpace(g2, this.subplotAreas[i], null);
space.ensureAtLeast(subSpace);
}
return space;
}