* @return The space required for the axes.
*/
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 = getFixedDomainAxisSpace();
if (fixed != null) {
if (orientation == PlotOrientation.HORIZONTAL) {
space.setLeft(fixed.getLeft());
space.setRight(fixed.getRight());
}
else if (orientation == PlotOrientation.VERTICAL) {
space.setTop(fixed.getTop());
space.setBottom(fixed.getBottom());
}
}
else {
CategoryAxis categoryAxis = getDomainAxis();
RectangleEdge categoryEdge = Plot.resolveDomainAxisLocation(
getDomainAxisLocation(), orientation);
if (categoryAxis != null) {
space = categoryAxis.reserveSpace(g2, this, plotArea,
categoryEdge, space);
}
else {
if (getDrawSharedDomainAxis()) {
space = getDomainAxis().reserveSpace(g2, this, plotArea,
categoryEdge, 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++) {
CategoryPlot sub = (CategoryPlot) this.subplots.get(i);
totalWeight += sub.getWeight();
}
this.subplotAreas = new Rectangle2D[n];
double x = adjustedPlotArea.getX();
double y = adjustedPlotArea.getY();
double usableSize = 0.0;
if (orientation == PlotOrientation.HORIZONTAL) {
usableSize = adjustedPlotArea.getWidth() - this.gap * (n - 1);
}
else if (orientation == PlotOrientation.VERTICAL) {
usableSize = adjustedPlotArea.getHeight() - this.gap * (n - 1);
}
for (int i = 0; i < n; i++) {
CategoryPlot plot = (CategoryPlot) this.subplots.get(i);
// calculate sub-plot area
if (orientation == PlotOrientation.HORIZONTAL) {
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.VERTICAL) {
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.calculateRangeAxisSpace(g2,
this.subplotAreas[i], null);
space.ensureAtLeast(subSpace);
}