/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2008, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/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.]
*
* ----------------------
* BorderArrangement.java
* ----------------------
* (C) Copyright 2004-2008, by Object Refinery Limited.
*
* Original Author: David Gilbert (for Object Refinery Limited);
* Contributor(s): -;
*
* Changes:
* --------
* 22-Oct-2004 : Version 1 (DG);
* 08-Feb-2005 : Updated for changes in RectangleConstraint (DG);
* 24-Feb-2005 : Improved arrangeRR() method (DG);
* 03-May-2005 : Implemented Serializable and added equals() method (DG);
* 13-May-2005 : Fixed bugs in the arrange() method (DG);
* 08-Apr-2008 : Fixed bug in arrangeFF() method where width is too small for
* left and right blocks (DG);
*
*/
package com.positive.charts.block;
import java.io.Serializable;
import org.eclipse.swt.graphics.GC;
import org.eclipse.swt.graphics.Rectangle;
import com.positive.charts.common.RectangleEdge;
import com.positive.charts.data.Range;
import com.positive.charts.data.util.ObjectUtilities;
import com.positive.charts.util.Size2D;
/**
* An arrangement manager that lays out blocks in a similar way to Swing's
* BorderLayout class.
*/
public class BorderArrangement implements Arrangement, Serializable {
/** For serialization. */
private static final long serialVersionUID = 506071142274883745L;
/** The block (if any) at the center of the layout. */
private Block centerBlock;
/** The block (if any) at the top of the layout. */
private Block topBlock;
/** The block (if any) at the bottom of the layout. */
private Block bottomBlock;
/** The block (if any) at the left of the layout. */
private Block leftBlock;
/** The block (if any) at the right of the layout. */
private Block rightBlock;
/**
* Creates a new instance.
*/
public BorderArrangement() {
}
/**
* Adds a block to the arrangement manager at the specified edge.
*
* @param block
* the block (<code>null</code> permitted).
* @param key
* the edge (an instance of {@link RectangleEdge}) or
* <code>null</code> for the center block.
*/
public void add(final Block block, final Object key) {
if (key == null) {
this.centerBlock = block;
} else {
final RectangleEdge edge = (RectangleEdge) key;
if (edge == RectangleEdge.TOP) {
this.topBlock = block;
} else if (edge == RectangleEdge.BOTTOM) {
this.bottomBlock = block;
} else if (edge == RectangleEdge.LEFT) {
this.leftBlock = block;
} else if (edge == RectangleEdge.RIGHT) {
this.rightBlock = block;
}
}
}
/**
* Arranges the items in the specified container, subject to the given
* constraint.
*
* @param container
* the container.
* @param g2
* the graphics device.
* @param constraint
* the constraint.
*
* @return The block size.
*/
public Size2D arrange(final BlockContainer container, final GC g2,
final RectangleConstraint constraint) {
final RectangleConstraint contentConstraint = container
.toContentConstraint(constraint);
Size2D contentSize = null;
final LengthConstraintType w = contentConstraint
.getWidthConstraintType();
final LengthConstraintType h = contentConstraint
.getHeightConstraintType();
if (w == LengthConstraintType.NONE) {
if (h == LengthConstraintType.NONE) {
contentSize = this.arrangeNN(container, g2);
} else if (h == LengthConstraintType.FIXED) {
throw new RuntimeException("Not implemented.");
} else if (h == LengthConstraintType.RANGE) {
throw new RuntimeException("Not implemented.");
}
} else if (w == LengthConstraintType.FIXED) {
if (h == LengthConstraintType.NONE) {
contentSize = this.arrangeFN(container, g2, constraint
.getWidth());
} else if (h == LengthConstraintType.FIXED) {
contentSize = this.arrangeFF(container, g2, constraint);
} else if (h == LengthConstraintType.RANGE) {
contentSize = this.arrangeFR(container, g2, constraint);
}
} else if (w == LengthConstraintType.RANGE) {
if (h == LengthConstraintType.NONE) {
throw new RuntimeException("Not implemented.");
} else if (h == LengthConstraintType.FIXED) {
throw new RuntimeException("Not implemented.");
} else if (h == LengthConstraintType.RANGE) {
contentSize = this.arrangeRR(container, constraint
.getWidthRange(), constraint.getHeightRange(), g2);
}
}
return new Size2D(
container.calculateTotalWidth(contentSize.getWidth()),
container.calculateTotalHeight(contentSize.getHeight()));
}
/**
* Arranges the items within a container.
*
* @param container
* the container.
* @param constraint
* the constraint.
* @param g2
* the graphics device.
*
* @return The container size after the arrangement.
*/
protected Size2D arrangeFF(final BlockContainer container, final GC g2,
final RectangleConstraint constraint) {
final double[] w = new double[5];
final double[] h = new double[5];
w[0] = constraint.getWidth();
if (this.topBlock != null) {
final RectangleConstraint c1 = new RectangleConstraint(w[0], null,
LengthConstraintType.FIXED, 0.0, new Range(0.0, constraint
.getHeight()), LengthConstraintType.RANGE);
final Size2D size = this.topBlock.arrange(g2, c1);
h[0] = size.height;
}
w[1] = w[0];
if (this.bottomBlock != null) {
final RectangleConstraint c2 = new RectangleConstraint(w[0], null,
LengthConstraintType.FIXED, 0.0, new Range(0.0, constraint
.getHeight()
- h[0]), LengthConstraintType.RANGE);
final Size2D size = this.bottomBlock.arrange(g2, c2);
h[1] = size.height;
}
h[2] = constraint.getHeight() - h[1] - h[0];
if (this.leftBlock != null) {
final RectangleConstraint c3 = new RectangleConstraint(0.0,
new Range(0.0, constraint.getWidth()),
LengthConstraintType.RANGE, h[2], null,
LengthConstraintType.FIXED);
final Size2D size = this.leftBlock.arrange(g2, c3);
w[2] = size.width;
}
h[3] = h[2];
if (this.rightBlock != null) {
final RectangleConstraint c4 = new RectangleConstraint(
0.0,
new Range(0.0, Math.max(constraint.getWidth() - w[2], 0.0)),
LengthConstraintType.RANGE, h[2], null,
LengthConstraintType.FIXED);
final Size2D size = this.rightBlock.arrange(g2, c4);
w[3] = size.width;
}
h[4] = h[2];
w[4] = constraint.getWidth() - w[3] - w[2];
final RectangleConstraint c5 = new RectangleConstraint(w[4], h[4]);
if (this.centerBlock != null) {
this.centerBlock.arrange(g2, c5);
}
if (this.topBlock != null) {
this.topBlock.setBounds(RectUtils.doubleRect(0.0, 0.0, w[0], h[0]));
}
if (this.bottomBlock != null) {
this.bottomBlock.setBounds(RectUtils.doubleRect(0.0, h[0] + h[2],
w[1], h[1]));
}
if (this.leftBlock != null) {
this.leftBlock.setBounds(RectUtils
.doubleRect(0.0, h[0], w[2], h[2]));
}
if (this.rightBlock != null) {
this.rightBlock.setBounds(RectUtils.doubleRect(w[2] + w[4], h[0],
w[3], h[3]));
}
if (this.centerBlock != null) {
this.centerBlock.setBounds(RectUtils.doubleRect(w[2], h[0], w[4],
h[4]));
}
return new Size2D(constraint.getWidth(), constraint.getHeight());
}
/**
* Arranges the container width a fixed width and no constraint on the
* height.
*
* @param container
* the container.
* @param g2
* the graphics device.
* @param width
* the fixed width.
*
* @return The container size after arranging the contents.
*/
protected Size2D arrangeFN(final BlockContainer container, final GC g2,
final double width) {
final double[] w = new double[5];
final double[] h = new double[5];
final RectangleConstraint c1 = new RectangleConstraint(width, null,
LengthConstraintType.FIXED, 0.0, null,
LengthConstraintType.NONE);
if (this.topBlock != null) {
final Size2D size = this.topBlock.arrange(g2, c1);
w[0] = size.width;
h[0] = size.height;
}
if (this.bottomBlock != null) {
final Size2D size = this.bottomBlock.arrange(g2, c1);
w[1] = size.width;
h[1] = size.height;
}
final RectangleConstraint c2 = new RectangleConstraint(0.0, new Range(
0.0, width), LengthConstraintType.RANGE, 0.0, null,
LengthConstraintType.NONE);
if (this.leftBlock != null) {
final Size2D size = this.leftBlock.arrange(g2, c2);
w[2] = size.width;
h[2] = size.height;
}
if (this.rightBlock != null) {
final double maxW = Math.max(width - w[2], 0.0);
final RectangleConstraint c3 = new RectangleConstraint(0.0,
new Range(Math.min(w[2], maxW), maxW),
LengthConstraintType.RANGE, 0.0, null,
LengthConstraintType.NONE);
final Size2D size = this.rightBlock.arrange(g2, c3);
w[3] = size.width;
h[3] = size.height;
}
h[2] = Math.max(h[2], h[3]);
h[3] = h[2];
if (this.centerBlock != null) {
final RectangleConstraint c4 = new RectangleConstraint(width - w[2]
- w[3], null, LengthConstraintType.FIXED, 0.0, null,
LengthConstraintType.NONE);
final Size2D size = this.centerBlock.arrange(g2, c4);
w[4] = size.width;
h[4] = size.height;
}
final double height = h[0] + h[1]
+ Math.max(h[2], Math.max(h[3], h[4]));
return this.arrange(container, g2, new RectangleConstraint(width,
height));
}
/**
* Performs an arrangement with a fixed width and a range for the height.
*
* @param container
* the container.
* @param g2
* the graphics device.
* @param constraint
* the constraint.
*
* @return The container size after the arrangement.
*/
protected Size2D arrangeFR(final BlockContainer container, final GC g2,
final RectangleConstraint constraint) {
final Size2D size1 = this.arrangeFN(container, g2, constraint
.getWidth());
if (constraint.getHeightRange().contains(size1.getHeight())) {
return size1;
} else {
final double h = constraint.getHeightRange().constrain(
size1.getHeight());
final RectangleConstraint c2 = constraint.toFixedHeight(h);
return this.arrange(container, g2, c2);
}
}
/**
* Performs an arrangement without constraints.
*
* @param container
* the container.
* @param g2
* the graphics device.
*
* @return The container size after the arrangement.
*/
protected Size2D arrangeNN(final BlockContainer container, final GC g2) {
final double[] w = new double[5];
final double[] h = new double[5];
if (this.topBlock != null) {
final Size2D size = this.topBlock.arrange(g2,
RectangleConstraint.NONE);
w[0] = size.width;
h[0] = size.height;
}
if (this.bottomBlock != null) {
final Size2D size = this.bottomBlock.arrange(g2,
RectangleConstraint.NONE);
w[1] = size.width;
h[1] = size.height;
}
if (this.leftBlock != null) {
final Size2D size = this.leftBlock.arrange(g2,
RectangleConstraint.NONE);
w[2] = size.width;
h[2] = size.height;
}
if (this.rightBlock != null) {
final Size2D size = this.rightBlock.arrange(g2,
RectangleConstraint.NONE);
w[3] = size.width;
h[3] = size.height;
}
h[2] = Math.max(h[2], h[3]);
h[3] = h[2];
if (this.centerBlock != null) {
final Size2D size = this.centerBlock.arrange(g2,
RectangleConstraint.NONE);
w[4] = size.width;
h[4] = size.height;
}
final double width = Math.max(w[0], Math.max(w[1], w[2] + w[4] + w[3]));
final double centerHeight = Math.max(h[2], Math.max(h[3], h[4]));
final double height = h[0] + h[1] + centerHeight;
if (this.topBlock != null) {
this.topBlock
.setBounds(new Rectangle(0, 0, (int) width, (int) h[0]));
}
if (this.bottomBlock != null) {
this.bottomBlock.setBounds(RectUtils.doubleRect(0.0, height - h[1],
width, h[1]));
}
if (this.leftBlock != null) {
this.leftBlock.setBounds(RectUtils.doubleRect(0.0, h[0], w[2],
centerHeight));
}
if (this.rightBlock != null) {
this.rightBlock.setBounds(RectUtils.doubleRect(width - w[3], h[0],
w[3], centerHeight));
}
if (this.centerBlock != null) {
this.centerBlock.setBounds(RectUtils.doubleRect(w[2], h[0], width
- w[2] - w[3], centerHeight));
}
return new Size2D(width, height);
}
/**
* Performs an arrangement with range constraints on both the vertical and
* horizontal sides.
*
* @param container
* the container.
* @param widthRange
* the allowable range for the container width.
* @param heightRange
* the allowable range for the container height.
* @param g2
* the graphics device.
*
* @return The container size.
*/
protected Size2D arrangeRR(final BlockContainer container,
final Range widthRange, final Range heightRange, final GC g2) {
final double[] w = new double[5];
final double[] h = new double[5];
if (this.topBlock != null) {
final RectangleConstraint c1 = new RectangleConstraint(widthRange,
heightRange);
final Size2D size = this.topBlock.arrange(g2, c1);
w[0] = size.width;
h[0] = size.height;
}
if (this.bottomBlock != null) {
final Range heightRange2 = Range.shift(heightRange, -h[0], false);
final RectangleConstraint c2 = new RectangleConstraint(widthRange,
heightRange2);
final Size2D size = this.bottomBlock.arrange(g2, c2);
w[1] = size.width;
h[1] = size.height;
}
final Range heightRange3 = Range.shift(heightRange, -(h[0] + h[1]));
if (this.leftBlock != null) {
final RectangleConstraint c3 = new RectangleConstraint(widthRange,
heightRange3);
final Size2D size = this.leftBlock.arrange(g2, c3);
w[2] = size.width;
h[2] = size.height;
}
final Range widthRange2 = Range.shift(widthRange, -w[2], false);
if (this.rightBlock != null) {
final RectangleConstraint c4 = new RectangleConstraint(widthRange2,
heightRange3);
final Size2D size = this.rightBlock.arrange(g2, c4);
w[3] = size.width;
h[3] = size.height;
}
h[2] = Math.max(h[2], h[3]);
h[3] = h[2];
final Range widthRange3 = Range
.shift(widthRange, -(w[2] + w[3]), false);
if (this.centerBlock != null) {
final RectangleConstraint c5 = new RectangleConstraint(widthRange3,
heightRange3);
final Size2D size = this.centerBlock.arrange(g2, c5);
w[4] = size.width;
h[4] = size.height;
}
final double width = Math.max(w[0], Math.max(w[1], w[2] + w[4] + w[3]));
final double height = h[0] + h[1]
+ Math.max(h[2], Math.max(h[3], h[4]));
if (this.topBlock != null) {
this.topBlock
.setBounds(RectUtils.doubleRect(0.0, 0.0, width, h[0]));
}
if (this.bottomBlock != null) {
this.bottomBlock.setBounds(RectUtils.doubleRect(0.0, height - h[1],
width, h[1]));
}
if (this.leftBlock != null) {
this.leftBlock.setBounds(RectUtils
.doubleRect(0.0, h[0], w[2], h[2]));
}
if (this.rightBlock != null) {
this.rightBlock.setBounds(RectUtils.doubleRect(width - w[3], h[0],
w[3], h[3]));
}
if (this.centerBlock != null) {
this.centerBlock.setBounds(RectUtils.doubleRect(w[2], h[0], width
- w[2] - w[3], height - h[0] - h[1]));
}
return new Size2D(width, height);
}
/**
* Clears the layout.
*/
public void clear() {
this.centerBlock = null;
this.topBlock = null;
this.bottomBlock = null;
this.leftBlock = null;
this.rightBlock = null;
}
/**
* Tests this arrangement for equality with an arbitrary object.
*
* @param obj
* the object (<code>null</code> permitted).
*
* @return A boolean.
*/
public boolean equals(final Object obj) {
if (obj == this) {
return true;
}
if (!(obj instanceof BorderArrangement)) {
return false;
}
final BorderArrangement that = (BorderArrangement) obj;
if (!ObjectUtilities.equal(this.topBlock, that.topBlock)) {
return false;
}
if (!ObjectUtilities.equal(this.bottomBlock, that.bottomBlock)) {
return false;
}
if (!ObjectUtilities.equal(this.leftBlock, that.leftBlock)) {
return false;
}
if (!ObjectUtilities.equal(this.rightBlock, that.rightBlock)) {
return false;
}
if (!ObjectUtilities.equal(this.centerBlock, that.centerBlock)) {
return false;
}
return true;
}
}