http://poi.apache.org/: Apache POI - Java API To Access Microsoft Format Files (Apache Software Foundation) 
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package org.apache.poi.xssf.usermodel.extensions;

import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.usermodel.ReadingOrder;
import org.apache.poi.ss.usermodel.VerticalAlignment;
import org.apache.poi.util.Internal;
import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTCellAlignment;
import org.openxmlformats.schemas.spreadsheetml.x2006.main.STHorizontalAlignment;
import org.openxmlformats.schemas.spreadsheetml.x2006.main.STVerticalAlignment;



Cell settings available in the Format/Alignment tab

/**
 * Cell settings available in the Format/Alignment tab
 */
public class XSSFCellAlignment {
    private CTCellAlignment cellAlignement;

    
Creates a Cell Alignment from the supplied XML definition

Params:
  • cellAlignment – 
/**
     * Creates a Cell Alignment from the supplied XML definition
     *
     * @param cellAlignment
     */
    public XSSFCellAlignment(CTCellAlignment cellAlignment) {
        this.cellAlignement = cellAlignment;
    }

    
Get the type of vertical alignment for the cell

See Also:
Returns:the type of aligment
/**
     * Get the type of vertical alignment for the cell
     *
     * @return the type of aligment
     * @see VerticalAlignment
     */
    public VerticalAlignment getVertical() {
        STVerticalAlignment.Enum align = cellAlignement.getVertical();
        if (align == null) align = STVerticalAlignment.BOTTOM;

        return VerticalAlignment.values()[align.intValue() - 1];
    }

    
Set the type of vertical alignment for the cell

Params:
  • align – - the type of alignment
See Also:
/**
     * Set the type of vertical alignment for the cell
     *
     * @param align - the type of alignment
     * @see VerticalAlignment
     */
    public void setVertical(VerticalAlignment align) {
        cellAlignement.setVertical(STVerticalAlignment.Enum.forInt(align.ordinal() + 1));
    }

    
Get the type of horizontal alignment for the cell

See Also:
Returns:the type of aligment
/**
     * Get the type of horizontal alignment for the cell
     *
     * @return the type of aligment
     * @see HorizontalAlignment
     */
    public HorizontalAlignment getHorizontal() {
        STHorizontalAlignment.Enum align = cellAlignement.getHorizontal();
        if (align == null) align = STHorizontalAlignment.GENERAL;

        return HorizontalAlignment.values()[align.intValue() - 1];
    }

    
Set the type of horizontal alignment for the cell

Params:
  • align – - the type of alignment
See Also:
/**
     * Set the type of horizontal alignment for the cell
     *
     * @param align - the type of alignment
     * @see HorizontalAlignment
     */
    public void setHorizontal(HorizontalAlignment align) {
        cellAlignement.setHorizontal(STHorizontalAlignment.Enum.forInt(align.ordinal() + 1));
    }
    
    
Set the type of reading order for the cell

Params:
  • order – - the type of reading order
See Also:
/**
     * Set the type of reading order for the cell
     *
     * @param order - the type of reading order
     * @see ReadingOrder
     */
    public void setReadingOrder(ReadingOrder order) {
        cellAlignement.setReadingOrder(order.getCode());
    }
    
    
Get the reading order for the cell

See Also:
Returns:the value of reading order
/**
     * Get the reading order for the cell
     *
     * @return the value of reading order
     * @see ReadingOrder
     */
    public ReadingOrder getReadingOrder() {
        if(cellAlignement != null && cellAlignement.isSetReadingOrder()) {
            return ReadingOrder.forLong(cellAlignement.getReadingOrder());
        }
        return ReadingOrder.CONTEXT;
    }
    
    
Get the number of spaces to indent the text in the cell

Returns:indent - number of spaces
/**
     * Get the number of spaces to indent the text in the cell
     *
     * @return indent - number of spaces
     */
    public long getIndent() {
        return cellAlignement.getIndent();
    }

    
Set the number of spaces to indent the text in the cell

Params:
  • indent – - number of spaces
/**
     * Set the number of spaces to indent the text in the cell
     *
     * @param indent - number of spaces
     */
    public void setIndent(long indent) {
        cellAlignement.setIndent(indent);
    }

    
Get the degree of rotation for the text in the cell


Expressed in degrees. Values range from 0 to 180. The first letter of
the text is considered the center-point of the arc.


For 0 - 90, the value represents degrees above horizon. For 91-180 the degrees below the
horizon is calculated as:


[degrees below horizon] = 90 - textRotation.



Returns:rotation degrees (between 0 and 180 degrees)
/**
     * Get the degree of rotation for the text in the cell
     * <p>
     * Expressed in degrees. Values range from 0 to 180. The first letter of
     * the text is considered the center-point of the arc.
     * <br>
     * For 0 - 90, the value represents degrees above horizon. For 91-180 the degrees below the
     * horizon is calculated as:
     * <br>
     * <code>[degrees below horizon] = 90 - textRotation.</code>
     * </p>
     *
     * @return rotation degrees (between 0 and 180 degrees)
     */
    public long getTextRotation() {
        return cellAlignement.getTextRotation();
    }

    
Set the degree of rotation for the text in the cell


Expressed in degrees. Values range from 0 to 180. The first letter of
the text is considered the center-point of the arc.


For 0 - 90, the value represents degrees above horizon. For 91-180 the degrees below the
horizon is calculated as:


[degrees below horizon] = 90 - textRotation.


Note: HSSF uses values from -90 to 90 degrees, whereas XSSF 
uses values from 0 to 180 degrees. The implementations of this method will map between these two value-ranges 
accordingly, however the corresponding getter is returning values in the range mandated by the current type
of Excel file-format that this CellStyle is applied to.

Params:
  • rotation – - the rotation degrees (between 0 and 180 degrees)
/**
     * Set the degree of rotation for the text in the cell
     * <p>
     * Expressed in degrees. Values range from 0 to 180. The first letter of
     * the text is considered the center-point of the arc.
     * <br>
     * For 0 - 90, the value represents degrees above horizon. For 91-180 the degrees below the
     * horizon is calculated as:
     * <br>
     * <code>[degrees below horizon] = 90 - textRotation.</code>
     * </p>
     *
     * Note: HSSF uses values from -90 to 90 degrees, whereas XSSF 
     * uses values from 0 to 180 degrees. The implementations of this method will map between these two value-ranges 
     * accordingly, however the corresponding getter is returning values in the range mandated by the current type
     * of Excel file-format that this CellStyle is applied to.
     *
     * @param rotation - the rotation degrees (between 0 and 180 degrees)
     */
    public void setTextRotation(long rotation) {
        if(rotation < 0 && rotation >= -90) {
            rotation = 90 + ((-1)*rotation);
        }
        cellAlignement.setTextRotation(rotation);
    }

    
Whether the text should be wrapped

Returns:a boolean value indicating if the text in a cell should be line-wrapped within the cell.
/**
     * Whether the text should be wrapped
     *
     * @return a boolean value indicating if the text in a cell should be line-wrapped within the cell.
     */
    public boolean getWrapText() {
        return cellAlignement.getWrapText();
    }

    
Set whether the text should be wrapped

Params:
  • wrapped – a boolean value indicating if the text in a cell should be line-wrapped within the cell.
/**
     * Set whether the text should be wrapped
     *
     * @param wrapped a boolean value indicating if the text in a cell should be line-wrapped within the cell.
     */
    public void setWrapText(boolean wrapped) {
        cellAlignement.setWrapText(wrapped);
    }

    public boolean getShrinkToFit() {
    	return cellAlignement.getShrinkToFit();
    }
    
    public void setShrinkToFit(boolean shrink) {
    	cellAlignement.setShrinkToFit(shrink);
    }
    
    
Access to low-level data

/**
     * Access to low-level data
     */
    @Internal
    public CTCellAlignment getCTCellAlignment() {
        return cellAlignement;
    }
}