| /******************************************************************************* |
| * Copyright (c) 2000, 2010 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; |
| |
| import java.util.List; |
| |
| import org.eclipse.draw2d.geometry.Dimension; |
| import org.eclipse.draw2d.geometry.Rectangle; |
| |
| /** |
| * Figures using the StackLayout as their layout manager have their children |
| * placed on top of one another. Order of placement is determined by the order |
| * in which the children were added, first child added placed on the bottom. |
| */ |
| public class StackLayout extends AbstractHintLayout { |
| |
| /** |
| * Returns the minimum size required by the input container. This is the |
| * size of the largest child of the container, as all other children fit |
| * into this size. |
| * |
| * @see AbstractHintLayout#calculateMinimumSize(IFigure, int, int) |
| */ |
| protected Dimension calculateMinimumSize(IFigure figure, int wHint, |
| int hHint) { |
| if (wHint > -1) |
| wHint = Math.max(0, wHint - figure.getInsets().getWidth()); |
| if (hHint > -1) |
| hHint = Math.max(0, hHint - figure.getInsets().getHeight()); |
| Dimension d = new Dimension(); |
| List children = figure.getChildren(); |
| IFigure child; |
| for (int i = 0; i < children.size(); i++) { |
| child = (IFigure) children.get(i); |
| if (!isObservingVisibility() || child.isVisible()) |
| d.union(child.getMinimumSize(wHint, hHint)); |
| } |
| |
| d.expand(figure.getInsets().getWidth(), figure.getInsets().getHeight()); |
| d.union(getBorderPreferredSize(figure)); |
| return d; |
| |
| } |
| |
| /** |
| * Calculates and returns the preferred size of the given figure. This is |
| * the union of the preferred sizes of the widest and the tallest of all its |
| * children. |
| * |
| * @see AbstractLayout#calculatePreferredSize(IFigure, int, int) |
| */ |
| protected Dimension calculatePreferredSize(IFigure figure, int wHint, |
| int hHint) { |
| if (wHint > -1) |
| wHint = Math.max(0, wHint - figure.getInsets().getWidth()); |
| if (hHint > -1) |
| hHint = Math.max(0, hHint - figure.getInsets().getHeight()); |
| Dimension d = new Dimension(); |
| List children = figure.getChildren(); |
| IFigure child; |
| for (int i = 0; i < children.size(); i++) { |
| child = (IFigure) children.get(i); |
| if (!isObservingVisibility() || child.isVisible()) |
| d.union(child.getPreferredSize(wHint, hHint)); |
| } |
| |
| d.expand(figure.getInsets().getWidth(), figure.getInsets().getHeight()); |
| d.union(getBorderPreferredSize(figure)); |
| return d; |
| } |
| |
| /** |
| * @see org.eclipse.draw2d.LayoutManager#layout(IFigure) |
| */ |
| public void layout(IFigure figure) { |
| Rectangle r = figure.getClientArea(); |
| List children = figure.getChildren(); |
| IFigure child; |
| for (int i = 0; i < children.size(); i++) { |
| child = (IFigure) children.get(i); |
| child.setBounds(r); |
| } |
| } |
| |
| } |