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- /* ========================================================================
- * JCommon : a free general purpose class library for the Java(tm) platform
- * ========================================================================
- *
- * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
- *
- * Project Info: http://www.jfree.org/jcommon/index.html
- *
- * This library is free software; you can redistribute it and/or modify it
- * under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation; either version 2.1 of the License, or
- * (at your option) any later version.
- *
- * This library 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 Lesser General Public
- * License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
- * USA.
- *
- * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
- * in the United States and other countries.]
- *
- * --------------
- * LCBLayout.java
- * --------------
- * (C) Copyright 2000-2005, by Object Refinery Limited.
- *
- * Original Author: David Gilbert (for Object Refinery Limited);
- * Contributor(s): -;
- *
- * $Id: LCBLayout.java,v 1.5 2005/11/16 15:58:40 taqua Exp $
- *
- * Changes (from 26-Oct-2001)
- * --------------------------
- * 26-Oct-2001 : Changed package to com.jrefinery.layout.* (DG);
- * 10-Oct-2002 : Fixed errors reported by Checkstyle (DG);
- */
- package org.jfree.layout;
- import java.awt.Component;
- import java.awt.Container;
- import java.awt.Dimension;
- import java.awt.Insets;
- import java.awt.LayoutManager;
- import java.io.Serializable;
- /**
- * Specialised layout manager for a grid of components.
- *
- * @author David Gilbert
- */
- public class LCBLayout implements LayoutManager, Serializable {
- /** For serialization. */
- private static final long serialVersionUID = -2531780832406163833L;
-
- /** A constant for the number of columns in the layout. */
- private static final int COLUMNS = 3;
- /** Tracks the column widths. */
- private int[] colWidth;
- /** Tracks the row heights. */
- private int[] rowHeight;
- /** The gap between each label and component. */
- private int labelGap;
- /** The gap between each component and button. */
- private int buttonGap;
- /** The gap between rows. */
- private int vGap;
- /**
- * Creates a new LCBLayout with the specified maximum number of rows.
- *
- * @param maxrows the maximum number of rows.
- */
- public LCBLayout(final int maxrows) {
- this.labelGap = 10;
- this.buttonGap = 6;
- this.vGap = 2;
- this.colWidth = new int[COLUMNS];
- this.rowHeight = new int[maxrows];
- }
- /**
- * Returns the preferred size using this layout manager.
- *
- * @param parent the parent.
- *
- * @return the preferred size using this layout manager.
- */
- public Dimension preferredLayoutSize(final Container parent) {
- synchronized (parent.getTreeLock()) {
- final Insets insets = parent.getInsets();
- final int ncomponents = parent.getComponentCount();
- final int nrows = ncomponents / COLUMNS;
- for (int c = 0; c < COLUMNS; c++) {
- for (int r = 0; r < nrows; r++) {
- final Component component
- = parent.getComponent(r * COLUMNS + c);
- final Dimension d = component.getPreferredSize();
- if (this.colWidth[c] < d.width) {
- this.colWidth[c] = d.width;
- }
- if (this.rowHeight[r] < d.height) {
- this.rowHeight[r] = d.height;
- }
- }
- }
- int totalHeight = this.vGap * (nrows - 1);
- for (int r = 0; r < nrows; r++) {
- totalHeight = totalHeight + this.rowHeight[r];
- }
- final int totalWidth = this.colWidth[0] + this.labelGap
- + this.colWidth[1] + this.buttonGap + this.colWidth[2];
- return new Dimension(
- insets.left + insets.right + totalWidth + this.labelGap
- + this.buttonGap,
- insets.top + insets.bottom + totalHeight + this.vGap
- );
- }
- }
- /**
- * Returns the minimum size using this layout manager.
- *
- * @param parent the parent.
- *
- * @return the minimum size using this layout manager.
- */
- public Dimension minimumLayoutSize(final Container parent) {
- synchronized (parent.getTreeLock()) {
- final Insets insets = parent.getInsets();
- final int ncomponents = parent.getComponentCount();
- final int nrows = ncomponents / COLUMNS;
- for (int c = 0; c < COLUMNS; c++) {
- for (int r = 0; r < nrows; r++) {
- final Component component
- = parent.getComponent(r * COLUMNS + c);
- final Dimension d = component.getMinimumSize();
- if (this.colWidth[c] < d.width) {
- this.colWidth[c] = d.width;
- }
- if (this.rowHeight[r] < d.height) {
- this.rowHeight[r] = d.height;
- }
- }
- }
- int totalHeight = this.vGap * (nrows - 1);
- for (int r = 0; r < nrows; r++) {
- totalHeight = totalHeight + this.rowHeight[r];
- }
- final int totalWidth = this.colWidth[0] + this.labelGap
- + this.colWidth[1] + this.buttonGap + this.colWidth[2];
- return new Dimension(
- insets.left + insets.right + totalWidth + this.labelGap
- + this.buttonGap,
- insets.top + insets.bottom + totalHeight + this.vGap
- );
- }
- }
- /**
- * Lays out the components.
- *
- * @param parent the parent.
- */
- public void layoutContainer(final Container parent) {
- synchronized (parent.getTreeLock()) {
- final Insets insets = parent.getInsets();
- final int ncomponents = parent.getComponentCount();
- final int nrows = ncomponents / COLUMNS;
- for (int c = 0; c < COLUMNS; c++) {
- for (int r = 0; r < nrows; r++) {
- final Component component
- = parent.getComponent(r * COLUMNS + c);
- final Dimension d = component.getPreferredSize();
- if (this.colWidth[c] < d.width) {
- this.colWidth[c] = d.width;
- }
- if (this.rowHeight[r] < d.height) {
- this.rowHeight[r] = d.height;
- }
- }
- }
- int totalHeight = this.vGap * (nrows - 1);
- for (int r = 0; r < nrows; r++) {
- totalHeight = totalHeight + this.rowHeight[r];
- }
- final int totalWidth = this.colWidth[0] + this.colWidth[1]
- + this.colWidth[2];
- // adjust the width of the second column to use up all of parent
- final int available = parent.getWidth() - insets.left
- - insets.right - this.labelGap - this.buttonGap;
- this.colWidth[1] = this.colWidth[1] + (available - totalWidth);
- // *** DO THE LAYOUT ***
- int x = insets.left;
- for (int c = 0; c < COLUMNS; c++) {
- int y = insets.top;
- for (int r = 0; r < nrows; r++) {
- final int i = r * COLUMNS + c;
- if (i < ncomponents) {
- final Component component = parent.getComponent(i);
- final Dimension d = component.getPreferredSize();
- final int h = d.height;
- final int adjust = (this.rowHeight[r] - h) / 2;
- parent.getComponent(i).setBounds(x, y + adjust,
- this.colWidth[c], h);
- }
- y = y + this.rowHeight[r] + this.vGap;
- }
- x = x + this.colWidth[c];
- if (c == 0) {
- x = x + this.labelGap;
- }
- if (c == 1) {
- x = x + this.buttonGap;
- }
- }
- }
- }
- /**
- * Not used.
- *
- * @param comp the component.
- */
- public void addLayoutComponent(final Component comp) {
- // not used
- }
- /**
- * Not used.
- *
- * @param comp the component.
- */
- public void removeLayoutComponent(final Component comp) {
- // not used
- }
- /**
- * Not used.
- *
- * @param name the component name.
- * @param comp the component.
- */
- public void addLayoutComponent(final String name, final Component comp) {
- // not used
- }
- /**
- * Not used.
- *
- * @param name the component name.
- * @param comp the component.
- */
- public void removeLayoutComponent(final String name, final Component comp) {
- // not used
- }
- }
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