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/*
 * $Id: SimpleCell.java 3752 2009-03-04 18:02:40Z blowagie $
 *
 * Copyright 2005 by Bruno Lowagie.
 *
 * The contents of this file are subject to the Mozilla Public License Version 1.1
 * (the "License"); you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the License.
 *
 * The Original Code is 'iText, a free JAVA-PDF library'.
 *
 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
 * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
 * All Rights Reserved.
 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
 * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
 *
 * Contributor(s): all the names of the contributors are added in the source code
 * where applicable.
 *
 * Alternatively, the contents of this file may be used under the terms of the
 * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
 * provisions of LGPL are applicable instead of those above.  If you wish to
 * allow use of your version of this file only under the terms of the LGPL
 * License and not to allow others to use your version of this file under
 * the MPL, indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by the LGPL.
 * If you do not delete the provisions above, a recipient may use your version
 * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the MPL as stated above or under the terms of the GNU
 * Library General Public License as published by the Free Software Foundation;
 * either version 2 of the License, or 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 LIBRARY GENERAL PUBLIC LICENSE for more
 * details.
 *
 * If you didn't download this code from the following link, you should check if
 * you aren't using an obsolete version:
 * http://www.lowagie.com/iText/
 */
package com.lowagie.text;

import java.util.ArrayList;
import java.util.Iterator;

import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfPCell;
import com.lowagie.text.pdf.PdfPCellEvent;
import com.lowagie.text.pdf.PdfPTable;

/**
 * Rectangle that can be used for Cells.
 * This Rectangle is padded and knows how to draw itself in a PdfPTable or PdfPcellEvent.
 */
public class SimpleCell extends Rectangle implements PdfPCellEvent, TextElementArray {

    // constants
    /** the CellAttributes object represents a row. */
    public static final boolean ROW = true;
    /** the CellAttributes object represents a cell. */
    public static final boolean CELL = false;

    // member variables
    /** the content of the Cell. */
    private ArrayList content = new ArrayList();
    /** the width of the Cell. */
    private float width = 0f;
    /** the widthpercentage of the Cell. */
    private float widthpercentage = 0f;
    /** an extra spacing variable */
    private float spacing_left = Float.NaN;
    /** an extra spacing variable */
    private float spacing_right = Float.NaN;
    /** an extra spacing variable */
    private float spacing_top = Float.NaN;
    /** an extra spacing variable */
    private float spacing_bottom = Float.NaN;
    /** an extra padding variable */
    private float padding_left = Float.NaN;
    /** an extra padding variable */
    private float padding_right = Float.NaN;
    /** an extra padding variable */
    private float padding_top = Float.NaN;
    /** an extra padding variable */
    private float padding_bottom = Float.NaN;
    /** the colspan of a Cell */
    private int colspan = 1;
    /** horizontal alignment inside the Cell. */
    private int horizontalAlignment = Element.ALIGN_UNDEFINED;
    /** vertical alignment inside the Cell. */
    private int verticalAlignment = Element.ALIGN_UNDEFINED;
    /** indicates if these are the attributes of a single Cell (false) or a group of Cells (true). */
    private boolean cellgroup = false;
    /**
     * Indicates that the largest ascender height should be used to determine the
     * height of the first line. Note that this only has an effect when rendered
     * to PDF. Setting this to true can help with vertical alignment problems.
     */
    protected boolean useAscender = false;
    /**
     * Indicates that the largest descender height should be added to the height of
     * the last line (so characters like y don't dip into the border). Note that
     * this only has an effect when rendered to PDF.
     */
    protected boolean useDescender = false;
    /**
     * Adjusts the cell contents to compensate for border widths. Note that
     * this only has an effect when rendered to PDF.
     */
    protected boolean useBorderPadding;

    /**
     * A CellAttributes object is always constructed without any dimensions.
     * Dimensions are defined after creation.
     *
     * @param row only true if the CellAttributes object represents a row.
     */
    public SimpleCell(boolean row) {
        super(0f, 0f, 0f, 0f);
        cellgroup = row;
        setBorder(BOX);
    }

    /**
     * Adds content to this object.
     *
     * @param element
     * @throws BadElementException
     */
    public void addElement(Element element) throws BadElementException {
        if (cellgroup) {
            if (element instanceof SimpleCell) {
                if (((SimpleCell) element).isCellgroup()) {
                    throw new BadElementException("You can't add one row to another row.");
                }
                content.add(element);
                return;
            } else {
                throw new BadElementException(
                        "You can only add cells to rows, no objects of type " + element.getClass().getName());
            }
        }
        if (element.type() == Element.PARAGRAPH
                || element.type() == Element.PHRASE
                || element.type() == Element.ANCHOR
                || element.type() == Element.CHUNK
                || element.type() == Element.LIST
                || element.type() == Element.MARKED
                || element.type() == Element.JPEG
                || element.type() == Element.JPEG2000
                || element.type() == Element.JBIG2
                || element.type() == Element.IMGRAW
                || element.type() == Element.IMGTEMPLATE) {
            content.add(element);
        } else {
            throw new BadElementException(
                    "You can't add an element of type " + element.getClass().getName() + " to a SimpleCell.");
        }
    }

    /**
     * Creates a Cell with these attributes.
     *
     * @param rowAttributes
     * @return a cell based on these attributes.
     * @throws BadElementException
     */
    public Cell createCell(SimpleCell rowAttributes) throws BadElementException {
        Cell cell = new Cell();
        cell.cloneNonPositionParameters(rowAttributes);
        cell.softCloneNonPositionParameters(this);
        cell.setColspan(colspan);
        cell.setHorizontalAlignment(horizontalAlignment);
        cell.setVerticalAlignment(verticalAlignment);
        cell.setUseAscender(useAscender);
        cell.setUseBorderPadding(useBorderPadding);
        cell.setUseDescender(useDescender);
        Element element;
        for (Iterator i = content.iterator(); i.hasNext();) {
            element = (Element) i.next();
            cell.addElement(element);
        }
        return cell;
    }

    /**
     * Creates a PdfPCell with these attributes.
     *
     * @param rowAttributes
     * @return a PdfPCell based on these attributes.
     */
    public PdfPCell createPdfPCell(SimpleCell rowAttributes) {
        PdfPCell cell = new PdfPCell();
        cell.setBorder(NO_BORDER);
        SimpleCell tmp = new SimpleCell(CELL);
        tmp.setSpacing_left(spacing_left);
        tmp.setSpacing_right(spacing_right);
        tmp.setSpacing_top(spacing_top);
        tmp.setSpacing_bottom(spacing_bottom);
        tmp.cloneNonPositionParameters(rowAttributes);
        tmp.softCloneNonPositionParameters(this);
        cell.setCellEvent(tmp);
        cell.setHorizontalAlignment(rowAttributes.horizontalAlignment);
        cell.setVerticalAlignment(rowAttributes.verticalAlignment);
        cell.setUseAscender(rowAttributes.useAscender);
        cell.setUseBorderPadding(rowAttributes.useBorderPadding);
        cell.setUseDescender(rowAttributes.useDescender);
        cell.setColspan(colspan);
        if (horizontalAlignment != Element.ALIGN_UNDEFINED)
            cell.setHorizontalAlignment(horizontalAlignment);
        if (verticalAlignment != Element.ALIGN_UNDEFINED)
            cell.setVerticalAlignment(verticalAlignment);
        if (useAscender)
            cell.setUseAscender(useAscender);
        if (useBorderPadding)
            cell.setUseBorderPadding(useBorderPadding);
        if (useDescender)
            cell.setUseDescender(useDescender);
        float p;
        float sp_left = spacing_left;
        if (Float.isNaN(sp_left))
            sp_left = 0f;
        float sp_right = spacing_right;
        if (Float.isNaN(sp_right))
            sp_right = 0f;
        float sp_top = spacing_top;
        if (Float.isNaN(sp_top))
            sp_top = 0f;
        float sp_bottom = spacing_bottom;
        if (Float.isNaN(sp_bottom))
            sp_bottom = 0f;
        p = padding_left;
        if (Float.isNaN(p))
            p = 0f;
        cell.setPaddingLeft(p + sp_left);
        p = padding_right;
        if (Float.isNaN(p))
            p = 0f;
        cell.setPaddingRight(p + sp_right);
        p = padding_top;
        if (Float.isNaN(p))
            p = 0f;
        cell.setPaddingTop(p + sp_top);
        p = padding_bottom;
        if (Float.isNaN(p))
            p = 0f;
        cell.setPaddingBottom(p + sp_bottom);
        Element element;
        for (Iterator i = content.iterator(); i.hasNext();) {
            element = (Element) i.next();
            cell.addElement(element);
        }
        return cell;
    }

    /**
     * @see com.lowagie.text.pdf.PdfPCellEvent#cellLayout(com.lowagie.text.pdf.PdfPCell, com.lowagie.text.Rectangle,
     *      com.lowagie.text.pdf.PdfContentByte[])
     */
    public void cellLayout(PdfPCell cell, Rectangle position, PdfContentByte[] canvases) {
        float sp_left = spacing_left;
        if (Float.isNaN(sp_left))
            sp_left = 0f;
        float sp_right = spacing_right;
        if (Float.isNaN(sp_right))
            sp_right = 0f;
        float sp_top = spacing_top;
        if (Float.isNaN(sp_top))
            sp_top = 0f;
        float sp_bottom = spacing_bottom;
        if (Float.isNaN(sp_bottom))
            sp_bottom = 0f;
        Rectangle rect = new Rectangle(position.getLeft(sp_left), position.getBottom(sp_bottom), position.getRight(sp_right),
                position.getTop(sp_top));
        rect.cloneNonPositionParameters(this);
        canvases[PdfPTable.BACKGROUNDCANVAS].rectangle(rect);
        rect.setBackgroundColor(null);
        canvases[PdfPTable.LINECANVAS].rectangle(rect);
    }

    /**
     * Sets the padding parameters if they are undefined.
     *
     * @param padding
     */
    public void setPadding(float padding) {
        if (Float.isNaN(padding_right)) {
            setPadding_right(padding);
        }
        if (Float.isNaN(padding_left)) {
            setPadding_left(padding);
        }
        if (Float.isNaN(padding_top)) {
            setPadding_top(padding);
        }
        if (Float.isNaN(padding_bottom)) {
            setPadding_bottom(padding);
        }
    }

    /**
     * @return Returns the colspan.
     */
    public int getColspan() {
        return colspan;
    }

    /**
     * @param colspan The colspan to set.
     */
    public void setColspan(int colspan) {
        if (colspan > 0)
            this.colspan = colspan;
    }

    /**
     * @return Returns the padding_bottom.
     */
    public float getPadding_bottom() {
        return padding_bottom;
    }

    /**
     * @param padding_bottom The padding_bottom to set.
     */
    public void setPadding_bottom(float padding_bottom) {
        this.padding_bottom = padding_bottom;
    }

    /**
     * @return Returns the padding_left.
     */
    public float getPadding_left() {
        return padding_left;
    }

    /**
     * @param padding_left The padding_left to set.
     */
    public void setPadding_left(float padding_left) {
        this.padding_left = padding_left;
    }

    /**
     * @return Returns the padding_right.
     */
    public float getPadding_right() {
        return padding_right;
    }

    /**
     * @param padding_right The padding_right to set.
     */
    public void setPadding_right(float padding_right) {
        this.padding_right = padding_right;
    }

    /**
     * @return Returns the padding_top.
     */
    public float getPadding_top() {
        return padding_top;
    }

    /**
     * @param padding_top The padding_top to set.
     */
    public void setPadding_top(float padding_top) {
        this.padding_top = padding_top;
    }

    /**
     * @return Returns the spacing.
     */
    public float getSpacing_left() {
        return spacing_left;
    }

    /**
     * @return Returns the spacing.
     */
    public float getSpacing_right() {
        return spacing_right;
    }

    /**
     * @return Returns the spacing.
     */
    public float getSpacing_top() {
        return spacing_top;
    }

    /**
     * @return Returns the spacing.
     */
    public float getSpacing_bottom() {
        return spacing_bottom;
    }

    /**
     * @param spacing The spacing to set.
     */
    public void setSpacing(float spacing) {
        this.spacing_left = spacing;
        this.spacing_right = spacing;
        this.spacing_top = spacing;
        this.spacing_bottom = spacing;
    }

    /**
     * @param spacing The spacing to set.
     */
    public void setSpacing_left(float spacing) {
        this.spacing_left = spacing;
    }

    /**
     * @param spacing The spacing to set.
     */
    public void setSpacing_right(float spacing) {
        this.spacing_right = spacing;
    }

    /**
     * @param spacing The spacing to set.
     */
    public void setSpacing_top(float spacing) {
        this.spacing_top = spacing;
    }

    /**
     * @param spacing The spacing to set.
     */
    public void setSpacing_bottom(float spacing) {
        this.spacing_bottom = spacing;
    }

    /**
     * @return Returns the cellgroup.
     */
    public boolean isCellgroup() {
        return cellgroup;
    }

    /**
     * @param cellgroup The cellgroup to set.
     */
    public void setCellgroup(boolean cellgroup) {
        this.cellgroup = cellgroup;
    }

    /**
     * @return Returns the horizontal alignment.
     */
    public int getHorizontalAlignment() {
        return horizontalAlignment;
    }

    /**
     * @param horizontalAlignment The horizontalAlignment to set.
     */
    public void setHorizontalAlignment(int horizontalAlignment) {
        this.horizontalAlignment = horizontalAlignment;
    }

    /**
     * @return Returns the vertical alignment.
     */
    public int getVerticalAlignment() {
        return verticalAlignment;
    }

    /**
     * @param verticalAlignment The verticalAligment to set.
     */
    public void setVerticalAlignment(int verticalAlignment) {
        this.verticalAlignment = verticalAlignment;
    }

    /**
     * @return Returns the width.
     */
    public float getWidth() {
        return width;
    }

    /**
     * @param width The width to set.
     */
    public void setWidth(float width) {
        this.width = width;
    }

    /**
     * @return Returns the widthpercentage.
     */
    public float getWidthpercentage() {
        return widthpercentage;
    }

    /**
     * @param widthpercentage The widthpercentage to set.
     */
    public void setWidthpercentage(float widthpercentage) {
        this.widthpercentage = widthpercentage;
    }

    /**
     * @return Returns the useAscender.
     */
    public boolean isUseAscender() {
        return useAscender;
    }

    /**
     * @param useAscender The useAscender to set.
     */
    public void setUseAscender(boolean useAscender) {
        this.useAscender = useAscender;
    }

    /**
     * @return Returns the useBorderPadding.
     */
    public boolean isUseBorderPadding() {
        return useBorderPadding;
    }

    /**
     * @param useBorderPadding The useBorderPadding to set.
     */
    public void setUseBorderPadding(boolean useBorderPadding) {
        this.useBorderPadding = useBorderPadding;
    }

    /**
     * @return Returns the useDescender.
     */
    public boolean isUseDescender() {
        return useDescender;
    }

    /**
     * @param useDescender The useDescender to set.
     */
    public void setUseDescender(boolean useDescender) {
        this.useDescender = useDescender;
    }

    /**
     * @return Returns the content.
     */
    ArrayList getContent() {
        return content;
    }

    /**
     * @see com.lowagie.text.TextElementArray#add(java.lang.Object)
     */
    public boolean add(Object o) {
        try {
            addElement((Element) o);
            return true;
        } catch (ClassCastException e) {
            return false;
        } catch (BadElementException e) {
            throw new ExceptionConverter(e);
        }
    }

    /**
     * @see com.lowagie.text.Element#type()
     */
    public int type() {
        return Element.CELL;
    }
}




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