| /* |
| * Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package java.awt; |
| |
| /** |
| * The {@code GridBagLayoutInfo} is an utility class for |
| * {@code GridBagLayout} layout manager. |
| * It stores align, size and baseline parameters for every component within a container. |
| * <p> |
| * @see java.awt.GridBagLayout |
| * @see java.awt.GridBagConstraints |
| * @since 1.6 |
| */ |
| public class GridBagLayoutInfo implements java.io.Serializable { |
| /* |
| * serialVersionUID |
| */ |
| private static final long serialVersionUID = -4899416460737170217L; |
| |
| int width, height; /* number of cells: horizontal and vertical */ |
| int startx, starty; /* starting point for layout */ |
| int minWidth[]; /* largest minWidth in each column */ |
| int minHeight[]; /* largest minHeight in each row */ |
| double weightX[]; /* largest weight in each column */ |
| double weightY[]; /* largest weight in each row */ |
| boolean hasBaseline; /* Whether or not baseline layout has been |
| * requested and one of the components |
| * has a valid baseline. */ |
| // These are only valid if hasBaseline is true and are indexed by |
| // row. |
| short baselineType[]; /* The type of baseline for a particular |
| * row. A mix of the BaselineResizeBehavior |
| * constants (1 << ordinal()) */ |
| int maxAscent[]; /* Max ascent (baseline). */ |
| int maxDescent[]; /* Max descent (height - baseline) */ |
| |
| /** |
| * Creates an instance of GridBagLayoutInfo representing {@code GridBagLayout} |
| * grid cells with it's own parameters. |
| * @param width the columns |
| * @param height the rows |
| * @since 6.0 |
| */ |
| GridBagLayoutInfo(int width, int height) { |
| this.width = width; |
| this.height = height; |
| } |
| |
| /** |
| * Returns true if the specified row has any component aligned on the |
| * baseline with a baseline resize behavior of CONSTANT_DESCENT. |
| */ |
| boolean hasConstantDescent(int row) { |
| return ((baselineType[row] & (1 << Component.BaselineResizeBehavior. |
| CONSTANT_DESCENT.ordinal())) != 0); |
| } |
| |
| /** |
| * Returns true if there is a baseline for the specified row. |
| */ |
| boolean hasBaseline(int row) { |
| return (hasBaseline && baselineType[row] != 0); |
| } |
| } |