tablecellbackground.java

swing编写的库存管理程序。毕业设计类

/**
 * ========================================
 * JFreeReport : a free Java report library
 * ========================================
 *
 * Project Info:  http://www.jfree.org/jfreereport/index.html
 * Project Lead:  Thomas Morgner;
 *
 * (C) Copyright 2000-2003, by Simba Management Limited and Contributors.
 *
 * 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., 59 Temple Place, Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * ------------------------
 * TableCellBackground.java
 * ------------------------
 * (C)opyright 2003, by Thomas Morgner and Contributors.
 *
 * Original Author:  Thomas Morgner;
 * Contributor(s):   David Gilbert (for Simba Management Limited);
 *
 * $Id: TableCellBackground.java,v 1.11.2.1 2003/12/21 23:28:46 taqua Exp $
 *
 * Changes
 * -------
 * 27-Jan-2003 : Initial version
 * 24-Feb-2003 : Fixed Checkstyle issues (DG);
 *
 */
package org.jfree.report.modules.output.table.base;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;

/**
 * Encapsulates all TableCellBackground informations, such as borders and background color.
 * <p>
 * The TableCellBackground contains the format information for the table cells.
 * Background information is used to format the tablecells in the {@link TableWriter}.
 * CellBackgrounds can be shared for multiple cells.
 *
 * @author Thomas Morgner
 */
public strictfp class TableCellBackground extends TableCellData implements Cloneable
{
  /** The top border's size. */
  private float borderSizeTop;

  /** The bottom border's size. */
  private float borderSizeBottom;

  /** The left border's size. */
  private float borderSizeLeft;

  /** The right border's size. */
  private float borderSizeRight;

  /** The top border's color. */
  private Color colorTop;

  /** The left border's color. */
  private Color colorLeft;

  /** The bottom border's color. */
  private Color colorBottom;

  /** The right border's color. */
  private Color colorRight;

  /** The cell background color. */
  private Color color;

  /**
   * Creates a table cell background with the given bounds, no borders and the specified
   * color as background. If the color is <code>null</code>, no background is set.
   *
   * @param outerBounds  the background cell size
   * @param color  the background color, <code>null</code> for no background.
   */
  public TableCellBackground(final Rectangle2D outerBounds, final Color color)
  {
    super(outerBounds);
    this.color = color;
  }

  /**
   * Returns <code>true</code>, as this is a cell background definition.
   *
   * @return always true, this is a data cell.
   *
   * @see TableCellData#isBackground
   */
  public boolean isBackground()
  {
    return true;
  }

  /**
   * Gets the background color for this cell, or <code>null</code> if this cell has no background.
   *
   * @return the background color or <code>null</code>.
   */
  public Color getColor()
  {
    return color;
  }

  /**
   * Defines the top border. If color is null or the size is 0, then no top border
   * is drawn.
   *
   * @param color the color of the top border.
   * @param size the line width of the top border.
   */
  public void setBorderTop(final Color color, final float size)
  {
    colorTop = color;
    borderSizeTop = size;
  }

  /**
   * Defines the left border. If color is null or the size is 0, then no left border
   * is drawn.
   *
   * @param color the color of the left border.
   * @param size the line width of the left border.
   */
  public void setBorderLeft(final Color color, final float size)
  {
    colorLeft = color;
    borderSizeLeft = size;
  }

  /**
   * Defines the bottom border. If color is null or the size is 0, then no bottom border
   * is drawn.
   *
   * @param color the color of the bottom border.
   * @param size the line width of the bottom border.
   */
  public void setBorderBottom(final Color color, final float size)
  {
    colorBottom = color;
    borderSizeBottom = size;
  }

  /**
   * Defines the right border. If color is null or the size is 0, then no right border
   * is drawn.
   *
   * @param color the color of the right border.
   * @param size the line width of the right border.
   */
  public void setBorderRight(final Color color, final float size)
  {
    colorRight = color;
    borderSizeRight = size;
  }

  /**
   * Returns the line width of the top border.
   *
   * @return the  line width of the top border.
   */
  public float getBorderSizeTop()
  {
    return borderSizeTop;
  }

  /**
   * Returns the line width of the bottom border.
   *
   * @return the  line width of the bottom border.
   */
  public float getBorderSizeBottom()
  {
    return borderSizeBottom;
  }

  /**
   * Returns the line width of the left border.
   *
   * @return the  line width of the left border.
   */
  public float getBorderSizeLeft()
  {
    return borderSizeLeft;
  }

  /**
   * Returns the line width of the right border.
   *
   * @return the  line width of the right border.
   */
  public float getBorderSizeRight()
  {
    return borderSizeRight;
  }

  /**
   * Returns the line color of the top border.
   *
   * @return the  color of the top border.
   */
  public Color getColorTop()
  {
    return colorTop;
  }

  /**
   * Returns the line color of the left border.
   *
   * @return the  color of the left border.
   */
  public Color getColorLeft()
  {
    return colorLeft;
  }

  /**
   * Returns the line color of the bottom border.
   *
   * @return the  color of the bottom border.
   */
  public Color getColorBottom()
  {
    return colorBottom;
  }

  /**
   * Returns the line color of the right border.
   *
   * @return the  color of the right border.
   */
  public Color getColorRight()
  {
    return colorRight;
  }

  /**
   * Merges this background with the given background and returns the
   * result. The given background is considered to be overlayed by this
   * background.
   *
   * @param background the other background cell
   * @param cellBounds the bounds of the cell for which to form the background.
   * @return a union of the background informations.
   */
  public TableCellBackground merge(final TableCellBackground background,
                                   final Rectangle2D cellBounds)
  {
    Color color = getColor();
    if (color == null)
    {
      color = background.getColor();
    }
    else
    {
      if (background.getColor() != null)
      {
        color = addColor(color, background.getColor());
      }
    }

    if (isBottomBorderDefinition(cellBounds, this))
    {
      final TableCellBackground merged = background.createMergedInstance(cellBounds);
      merged.color = color;
      merged.mergeBottomBorder(this);
      return merged;
    }
    if (isBottomBorderDefinition(cellBounds, background))
    {
      final TableCellBackground merged = createMergedInstance(cellBounds);
      merged.color = color;
      merged.mergeBottomBorder(background);
      return merged;
    }
    if (isRightBorderDefinition(cellBounds, this))
    {
      final TableCellBackground merged = background.createMergedInstance(cellBounds);
      merged.color = color;
      merged.mergeRightBorder(this);
      return merged;
    }
    if (isRightBorderDefinition(cellBounds, background))