/*******************************************************************************
* Copyright (c) 2003, 2005 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.draw2d.graph;
import org.eclipse.draw2d.geometry.Insets;
/**
* Assigns the Y and Height values to the nodes in the graph. All nodes in the same row
* are given the same height.
* @author Randy Hudson
* @since 2.1.2
*/
class VerticalPlacement extends GraphVisitor {
void visit(DirectedGraph g) {
Insets pad;
int currentY = g.getMargin().top;
int row, rowHeight;
g.rankLocations = new int[g.ranks.size() + 1];
for (row = 0; row < g.ranks.size(); row++) {
g.rankLocations[row] = currentY;
Rank rank = g.ranks.getRank(row);
rowHeight = 0;
rank.topPadding = rank.bottomPadding = 0;
for (int n = 0; n < rank.size(); n++) {
Node node = rank.getNode(n);
pad = g.getPadding(node);
rowHeight = Math.max(node.height, rowHeight);
rank.topPadding = Math.max(pad.top, rank.topPadding);
rank.bottomPadding = Math.max(pad.bottom, rank.bottomPadding);
}
currentY += rank.topPadding;
rank.setDimensions(currentY, rowHeight);
currentY += rank.height + rank.bottomPadding;
}
g.rankLocations[row] = currentY;
g.size.height = currentY;
}
}