Java Swing SpringLayout makeOneLineGrid(Container parent)

Description

make One Line Grid

License

Open Source License

Declaration

public static void makeOneLineGrid(Container parent) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

import javax.swing.*;
import java.awt.*;

public class Main {
    public static void makeOneLineGrid(Container parent) {
        makeCompactGrid(parent, 1, parent.getComponentCount(), 10, 0, 10, 10);
    }//from  w w w.j av  a 2s. c o  m

    /**
     * Aligns the first <code>rows</code> * <code>cols</code> components of
     * <code>parent</code> in a grid. Each component in a column is as wide as
     * the maximum preferred width of the components in that column; height is
     * similarly determined for each row. The parent is made just big enough to
     * fit them all.
     *
     * @param rows     number of rows
     * @param cols     number of columns
     * @param initialX x location to start the grid at
     * @param initialY y location to start the grid at
     * @param xPad     x padding between cells
     * @param yPad     y padding between cells
     */
    public static void makeCompactGrid(Container parent, int rows, int cols, int initialX, int initialY, int xPad,
            int yPad) {
        SpringLayout layout;
        try {
            layout = (SpringLayout) parent.getLayout();
        } catch (ClassCastException exc) {
            System.err.println("The first argument to makeCompactGrid must use SpringLayout.");
            return;
        }

        // Align all cells in each column and make them the same width.
        Spring x = Spring.constant(initialX);
        for (int c = 0; c < cols; c++) {
            Spring width = Spring.constant(0);
            for (int r = 0; r < rows; r++) {
                width = Spring.max(width, getConstraintsForCell(r, c, parent, cols).getWidth());
            }
            for (int r = 0; r < rows; r++) {
                SpringLayout.Constraints constraints = getConstraintsForCell(r, c, parent, cols);
                constraints.setX(x);
                constraints.setWidth(width);
            }
            x = Spring.sum(x, Spring.sum(width, Spring.constant(xPad)));
        }

        // Align all cells in each row and make them the same height.
        Spring y = Spring.constant(initialY);
        for (int r = 0; r < rows; r++) {
            Spring height = Spring.constant(0);
            for (int c = 0; c < cols; c++) {
                height = Spring.max(height, getConstraintsForCell(r, c, parent, cols).getHeight());
            }
            for (int c = 0; c < cols; c++) {
                SpringLayout.Constraints constraints = getConstraintsForCell(r, c, parent, cols);
                constraints.setY(y);
                constraints.setHeight(height);
            }
            y = Spring.sum(y, Spring.sum(height, Spring.constant(yPad)));
        }

        // Set the parent's size.
        SpringLayout.Constraints pCons = layout.getConstraints(parent);
        pCons.setConstraint(SpringLayout.SOUTH, y);
        pCons.setConstraint(SpringLayout.EAST, x);
    }

    private static SpringLayout.Constraints getConstraintsForCell(int row, int col, Container parent, int cols) {
        SpringLayout layout = (SpringLayout) parent.getLayout();
        Component c = parent.getComponent(row * cols + col);
        return layout.getConstraints(c);
    }
}

Related

1. fixCellWidth(Container parent, int rows, int cols, int initialX, int initialY, int xPad, int yPad, int[] maxX, int[] maxY)
2. getConstraintsForCell(int row, int col, Container parent, int cols)
3. makeGrid(final Container parent, final int rows, final int cols, final int initialX, final int initialY, final int xPad, final int yPad)
4. singleColumn(final Container container, final int initialY, final int yPad)