/*
* Copyright (c) 2006, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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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);
}
}