Java Doc for VariableGridLayout.java in  » Swing-Library » jEdit » org » gjt » sp » jedit » gui » Java Source Code / Java DocumentationJava Source Code and Java Documentation

The container is divided into rectangles, and one component is placed in each rectangle. Each row is as large as the largest component in that row, and each column is as wide as the widest component in that column.

This behavior is basically the same as in java.awt.GridLayout, but with different row heights and column widths for each row/column.

For example, the following is an applet that lays out six buttons into three rows and two columns:

 import java.awt.*;
 import java.applet.Applet;
 public class ButtonGrid extends Applet {
 public void init() {
 setLayout(new VariableGridLayout(VariableGridLayout.FIXED_NUM_COLUMNS, 2));
 add(new Button("1"));
 add(new Button("2"));
 add(new Button("3"));
 add(new Button("4"));
 add(new Button("5"));
 add(new Button("6"));
 }
 }
 

Programmer's remark: VariableGridLayout could be faster, if it would reside in the package java.awt, because then it could access some package private fields of Container or Component. Instead, it has to call Component.getSize(), which allocates memory on the heap.

Todo:

• Ability to span components over more than one cell horizontally and vertically.