/**
* Render cells, starting at specified item.
*
* @param graphics
* @param treemap
* @param item
* @param active
*/
public void renderTree(TreemapGraphics graphics, Treemap treemap, Object item, boolean active) {
TreemapCell cell = treemap.getCell(item);
if (cell == null) {
return;
}
boolean visible = cell.isLeaf() || cell.getFramed() != null;
Object value = cell.getValue();
if (active) {
if (visible) {
graphics.fill(cell, colorProvider.getHighlightColor(item, value));
}
} else {
Rectangle borders = cell.getBorders();
if (borders != null) {
graphics.fill(borders, colorProvider.getBorderColor(item, value));
}
if (visible) {
Color color1 = colorProvider.getBackgroundColor(item, value);
Color color2 = colorProvider.getBackgroundGradientColor(item, value);
graphics.fill(cell, color1, color2);
}
}
if (!cell.isLeaf()) {
Rectangle framed = cell.getFramed();
if (framed != null) {
graphics.fill(framed, colorProvider.getBorderColor(item, value));
}
for (Object node : cell.getChildren()) {
renderTree(graphics, treemap, node, false);
}
}
}
