drawinggroupobject.java

一个非常有用的操作MCRSOFT EXCEL文件的工具。可以用JAVA方便的新建

/*********************************************************************
*
*      Copyright (C) 2002 Andrew Khan
*
* 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
***************************************************************************/

package jxl.biff.drawing;

import java.io.IOException;
import java.io.FileInputStream;

import common.Assert;
import common.Logger;

import jxl.WorkbookSettings;
import jxl.biff.ByteData;
import jxl.biff.IntegerHelper;
import jxl.biff.IndexMapping;
import jxl.biff.Type;
import jxl.write.biff.File;
import jxl.biff.drawing.MsoDrawingRecord;
import jxl.biff.drawing.ObjRecord;

/**
 * Interface for the various object types that can be added to a drawing 
 * group
 */
public interface DrawingGroupObject
{
  /**
   * Sets the object id.  Invoked by the drawing group when the object is 
   * added to id
   *
   * @param objid the object id
   * @param bip the blip id
   * @param sid the shape id
   */
  void setObjectId(int objid, int bip, int sid);

  /**
   * Accessor for the object id
   *
   * @return the object id
   */
  int getObjectId();

  /**
   * Accessor for the blip id
   *
   * @return the blip id
   */
  int getBlipId();

  /**
   * Accessor for the shape id
   *
   * @return the shape id
   */
  public  int getShapeId();


  /**
   * Gets the drawing record which was read in
   *
   * @return the drawing record
   */
  MsoDrawingRecord  getMsoDrawingRecord();
  
  /**
   * Creates the main Sp container for the drawing
   *
   * @return the SP container
   */
  public EscherContainer getSpContainer();

  /**
   * Sets the drawing group for this drawing.  Called by the drawing group
   * when this drawing is added to it
   *
   * @param dg the drawing group
   */
  void setDrawingGroup(DrawingGroup dg);

  /**
   * Accessor for the drawing group
   *
   * @return the drawing group
   */
  DrawingGroup getDrawingGroup();

  /**
   * Gets the origin of this drawing
   *
   * @return where this drawing came from
   */
  Origin getOrigin();
  
  /**
   * Accessor for the reference count on this drawing
   *
   * @return the reference count
   */
  int getReferenceCount();

  /**
   * Sets the new reference count on the drawing
   *
   * @param r the new reference count
   */
  void setReferenceCount(int r);

  /**
   * Accessor for the column of this drawing
   *
   * @return the column
   */
  public double getX();

  /**
   * Sets the column position of this drawing
   *
   * @param x the column
   */
  public void setX(double x);

  /**
   * Accessor for the row of this drawing
   *
   * @return the row
   */
  public double getY();

  /**
   * Accessor for the row of the drawing
   *
   * @param y the row
   */
  public void setY(double y);

  /**
   * Accessor for the width of this drawing
   *
   * @return the number of columns spanned by this image
   */
  public double getWidth();

  /**
   * Accessor for the width
   *
   * @param w the number of columns to span
   */
  public void setWidth(double w);

  /**
   * Accessor for the height of this drawing
   *
   * @return the number of rows spanned by this image
   */
  public double getHeight();

  /**
   * Accessor for the height of this drawing
   *
   * @param h the number of rows spanned by this image
   */
  public void setHeight(double h);


  /**
   * Accessor for the type
   *
   * @return the type
   */
  ShapeType getType();

  /**
   * Accessor for the image data
   *
   * @return the image data
   */
  public byte[] getImageData();

  /**
   * Accessor for the image data
   *
   * @return the image data
   */
  public byte[] getImageBytes() throws IOException;

  /** 
   * Accessor for the image file path.  Normally this is the absolute path
   * of a file on the directory system, but if this drawing was constructed
   * using an byte[] then the blip id is returned
   *
   * @return the image file path, or the blip id
   */
  String getImageFilePath();

  /**
   * Writes any other records associated with this drawing group object
   */
  public void writeAdditionalRecords(File outputFile) throws IOException;

  /**
   * Writes any records that need to be written after all the drawing group
   * objects have been written
   */
  public void writeTailRecords(File outputFile) throws IOException;
}