/**
* Calculates the axis space required.
*
* @param g2 the graphics device.
* @param plotArea the plot area.
* @return The space.
*/
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 {
ValueAxis xAxis = getDomainAxis();
RectangleEdge xEdge = Plot.resolveDomainAxisLocation(getDomainAxisLocation(), orientation);
if (xAxis != null) {
space = xAxis.reserveSpace(g2, this, plotArea, xEdge, space);
}
}
Rectangle2D adjustedPlotArea = space.shrink(plotArea, null);
// work out the maximum height or width of the non-shared axes...
int n = this.subplots.size();
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++) {
XYPlot plot = (XYPlot) this.subplots.get(i);
// calculate sub-plot area
if (orientation == PlotOrientation.HORIZONTAL) {
double w = usableSize * plot.getWeight() / this.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() / this.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);
}
return space;
}
