/**
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.jpedal.org
* (C) Copyright 1997-2008, IDRsolutions and Contributors.
*
* This file is part of JPedal
*
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
*
* ---------------
* Vector_Object.java
* ---------------
*/
package org.jpedal.utils.repositories;
import java.awt.*;
import java.awt.geom.*;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectInputStream;
import java.io.ObjectOutput;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import javax.imageio.ImageIO;
import org.jpedal.color.PdfTexturePaint;
import org.jpedal.fonts.glyph.T1Glyph;
import org.jpedal.fonts.glyph.T3Glyph;
import org.jpedal.fonts.tt.TTGlyph;
import org.jpedal.io.PathSerializer;
import org.jpedal.render.DynamicVectorRenderer;
/**
* Provides the functionality/convenience of a Vector for objects -
*
* Much faster because not synchronized and no cast -
* Does not double in size each time
*/
public class Vector_Object implements Serializable
{
//how much we resize each time - will be doubled up to 160
int increment_size = 1000;
protected int current_item = 0;
//current max size
int max_size = 250;
/**
* flags to indicate which type of custom serialization is taking place
*/
private static final Integer GENERIC = 1;
private static final Integer BASICSTROKE = 2;
private static final Integer BUFFERED_IMAGE = 3;
private static final Integer GENERAL_PATH = 4;
private static final Integer T1GLYPH = 5;
private static final Integer TTGLYPH = 6;
private static final Integer AREA = 7;
private static final Integer RECT = 8;
private static final Integer T3GLYPH= 9;
private static final Integer TEXTUREDPAINT= 10;
//holds the data
private Object[] items = new Object[max_size];
//default size
public Vector_Object()
{
}
private int checkPoint=-1;
/**
* used to store end of PDF components
*/
public void resetToCheckpoint() {
if(checkPoint!=-1)
current_item=checkPoint;
checkPoint=-1;
}
/**
* used to rollback array to point
*/
public void setCheckpoint() {
if(checkPoint==-1)
checkPoint=current_item;
}
protected static int incrementSize(int increment_size){
if(increment_size<8000)
increment_size=increment_size*4;
else if(increment_size<16000)
increment_size=increment_size*2;
else
increment_size=increment_size+2000;
return increment_size;
}
//set size
public Vector_Object( int number )
{
max_size = number;
items = new Object[max_size];
}
///////////////////////////////////
/**
* extract underlying data
*/
final public Object[] get()
{
return items;
}
/////////////////////////////////////
/**
* pull item from top as in LIFO stack
*/
final public Object pull()
{
if(current_item>0)
current_item--;
return ( items[current_item] );
}
/////////////////////////////////////
/**
* put item at top as in LIFO stack
*/
final public void push( Object value )
{
checkSize( current_item );
items[current_item] = value;
current_item++;
}
////////////////////////////////////
/**
* see if value present
*/
final public boolean contains( Object value )
{
boolean flag = false;
for( int i = 0;i < current_item;i++ )
{
if( items[i].equals( value ) )
{
i = current_item + 1;
flag = true;
}
}
return flag;
}
///////////////////////////////////
/**
* add an item
*/
final public void addElement( Object value )
{
//if(current_item>6370 && value instanceof Shape)
//System.out.println("Added into array"+current_item+" "+((Shape)value).getBounds());
checkSize( current_item );
items[current_item] = value;
current_item++;
}
///////////////////////////////////
/**
* set an element
*/
final public void setElementAt( Object new_name, int id )
{
if( id >= max_size )
checkSize( id );
items[id] = new_name;
}
///////////////////////////////////
/**
* remove element at
*/
final public Object elementAt( int id )
{
if( id >= max_size )
return null;
else
return items[id];
}
///////////////////////////////////
/**
* replace underlying data
*/
final public void set( Object[] new_items )
{
items = new_items;
}
///////////////////////////////////
/**
* clear the array
*/
final public void clear()
{
checkPoint = -1;
//items = null;
//holds the data
//items = new Object[max_size];
if(current_item>0){
for(int i=0;i<current_item;i++)
items[i]=null;
}else{
for(int i=0;i<max_size;i++)
items[i]=null;
}
current_item = 0;
}
///////////////////////////////////
/**
* return the size
*/
final public int size()
{
return current_item + 1;
}
///////////////////////////////////
/**
* remove element at
*/
final public void removeElementAt( int id )
{
if( id >= 0 )
{
//copy all items back one to over-write
System.arraycopy(items, id + 1, items, id, current_item - 1 - id);
//flush last item
items[current_item - 1] = null;
}
else
items[0] = null;
//reduce counter
current_item--;
}
////////////////////////////////////
/**
* check the size of the array and increase if needed
*/
private void checkSize( int i ){
if( i >= max_size ){
int old_size = max_size;
max_size = max_size + increment_size;
//allow for it not creating space
if( max_size <= i )
max_size = i +increment_size+ 2;
Object[] temp = items;
items = new Object[max_size];
System.arraycopy( temp, 0, items, 0, old_size );
//increase size increase for next time
increment_size=incrementSize(increment_size);
}
}
/**
* method to serialize each element in this collection
*
* NOT PART OF API and subject to change (DO NOT USE)
*
* @param bos - the output stream to write the objects out to
* @throws IOException
*/
public void writeToStream(ByteArrayOutputStream bos) throws IOException{
ObjectOutput os=new ObjectOutputStream(bos);
//size of array as first item
os.writeObject(max_size);
int basicStrokes=0,bufferedImages=0,paints=0,generalPaths=0,t3glyphs=0,t1glyphs=0,ttglyphs=0,areas=0,generics=0,nullGenerics=0;
int totalGeneric=0;
/**
* iterate through each item in the collection, and if its an object that
* wont serialize automaticaly, then perform a custom serialization, otherwise
* let the default serialization handle it
*/
for (int i = 0; i < max_size; i++) {
Object nextObj=items[i];
if(nextObj instanceof BasicStroke){
basicStrokes++;
/** write out a flag to indicate this is a BasicStroke object */
os.writeObject(BASICSTROKE);
BasicStroke stroke=(BasicStroke) items[i];
/** write out the raw elements of the BasicStroke */
os.writeFloat(stroke.getLineWidth());
os.writeInt(stroke.getEndCap());
os.writeInt(stroke.getLineJoin());
os.writeFloat(stroke.getMiterLimit());
os.writeObject(stroke.getDashArray());
os.writeFloat(stroke.getDashPhase());
}else if(nextObj instanceof Rectangle2D){
basicStrokes++;
/** write out a flag to indicate this is a BasicStroke object */
os.writeObject(RECT);
Rectangle2D rect=(Rectangle2D) items[i];
/** write out the raw elements of the Rect */
os.writeDouble(rect.getBounds2D().getX());
os.writeDouble(rect.getBounds2D().getY());
os.writeDouble(rect.getBounds2D().getWidth());
os.writeDouble(rect.getBounds2D().getHeight());
}else if(nextObj instanceof BufferedImage){
bufferedImages++;
/** write out a flag to indicate this is a BufferedImage object */
os.writeObject(BUFFERED_IMAGE);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
/** store the image in a byte array */
ImageIO.write((BufferedImage) nextObj, "png", baos);
/** write the image as a byte array to the stream */
os.writeObject(baos.toByteArray());
}else if(nextObj instanceof GeneralPath){
generalPaths++;
/** write out a flag to indicate this is a GeneralPath object */
os.writeObject(Vector_Object.GENERAL_PATH);
/** use out custom path serializer to serialize the path */
PathSerializer.serializePath(os, ((GeneralPath)items[i]).getPathIterator(new AffineTransform()));
}else if(nextObj instanceof T1Glyph){
t1glyphs++;
/** write out a flag to indicate this is a T1Glyph object */
os.writeObject(T1GLYPH);
((T1Glyph)nextObj).flushArea();
/** use default serialization to serialize the object except the paths */
os.writeObject(nextObj);
/** now serialize the paths to the stream */
((T1Glyph)nextObj).writePathsToStream(os);
}else if(nextObj instanceof TTGlyph){
ttglyphs++;
/** write out a flag to indicate this is a TTGlyph object */
os.writeObject(TTGLYPH);
((TTGlyph)nextObj).flushArea();
/** use default serialization to serialize the object except the paths */
os.writeObject(nextObj);
/** now serialize the paths to the stream */
((TTGlyph)nextObj).writePathsToStream(os);
}else if(nextObj instanceof T3Glyph){
t3glyphs++;
/** write out a flag to indicate this is a TTGlyph object */
os.writeObject(T3GLYPH);
//((T3Glyph)nextObj).flushArea(); not needed at present
/**convert to data stream and save*/
((T3Glyph)nextObj).writePathsToStream(os);
}else if(nextObj instanceof org.jpedal.color.PdfTexturePaint){
paints++;
/** write out a flag to indicate this is a Texture object */
os.writeObject(TEXTUREDPAINT);
/** write the image as a byte array to the stream */
ByteArrayOutputStream baos = new ByteArrayOutputStream();
/** store the image in a byte array */
ImageIO.write(((org.jpedal.color.PdfTexturePaint)nextObj).getImage(), "png", baos);
os.writeObject(baos.toByteArray());
/**and anchor as well*/
Rectangle2D rect=((org.jpedal.color.PdfTexturePaint)nextObj).getAnchorRect();
os.writeDouble(rect.getBounds2D().getX());
os.writeDouble(rect.getBounds2D().getY());
os.writeDouble(rect.getBounds2D().getWidth());
os.writeDouble(rect.getBounds2D().getHeight());
}else if(nextObj instanceof Area){
areas++;
/** write out a flag to indicate this is a TTGlyph object */
os.writeObject(AREA);
Area area=(Area) items[i];
/** extract the PathIterator from the Area object */
PathIterator pathIterator = area.getPathIterator(new AffineTransform());
/** use out custom path serializer to serialize the path */
PathSerializer.serializePath(os,pathIterator);
}else{
if(nextObj==null)
nullGenerics++;
else{
generics++;
}
/**
* if the object is not on our list to custom serialize, then let the
* default serialization handle it
*/
try{
int start = bos.size();
/** write out a flag to indicate this is a generic object */
os.writeObject(GENERIC);
/** serialize the object to the stream */
os.writeObject(nextObj);
int end = bos.size();
totalGeneric+=(end-start);
}catch(Exception e){
System.err.println("nextObj = "+nextObj);
e.printStackTrace();
}
}
}
os.close();
}
/**
* method to deserialize each object in the input stream
*
* NOT PART OF API and subject to change (DO NOT USE)
*
* @param bis - the input stream to read from
* @throws IOException
* @throws ClassNotFoundException
*/
public void restoreFromStream(ByteArrayInputStream bis) throws IOException, ClassNotFoundException{
ObjectInput os=new ObjectInputStream(bis);
/** read fromt the stream the number of objects in this collection */
int size= (Integer) os.readObject();
max_size = size;
items=new Object[size];
Object nextObject;
Integer type;
/**
* iterate through each object in the input stream, and store into our
* internal collection
*/
for (int i = 0; i < size; i++) {
/** read what type this object is going to be */
type=(Integer) os.readObject();
if(type.compareTo(BASICSTROKE)==0){
/** retrieve the raw data from the BasicStroke */
float w = os.readFloat();
int current_line_cap_style = os.readInt();
int current_line_join_style = os.readInt();
float mitre_limit = os.readFloat();
float[] current_line_dash_array = (float[]) os.readObject();
float current_line_dash_phase = os.readFloat();
/** create a new BasicStroke object based on the raw data */
nextObject = new BasicStroke( w, current_line_cap_style, current_line_join_style, mitre_limit, current_line_dash_array, current_line_dash_phase );
}else if (type.compareTo(RECT)==0){
float x = os.readFloat();
float y = os.readFloat();
float w = os.readFloat();
float h = os.readFloat();
nextObject=new Rectangle2D.Float(x,y,w,h);
}else if(type.compareTo(BUFFERED_IMAGE)==0){
/** read in the bytes that make up this image */
byte[] bytes = (byte[]) os.readObject();
/** read the bytes in and rebuild the image */
nextObject = ImageIO.read(new ByteArrayInputStream(bytes));
}else if(type.compareTo(GENERAL_PATH)==0){
/** use our custom path deserializer to read in the path */
nextObject = PathSerializer.deserializePath(os);
}else if(type.compareTo(T1GLYPH)==0){
/** read in the entire glyph, except the paths */
T1Glyph glyph = (T1Glyph) os.readObject();
/**
* we now need to extract the paths for this glyph from the stream
*/
/** the number of paths in the glyph */
int count = (Integer) os.readObject();
GeneralPath[] paths = new GeneralPath[count];
/** iterate through the stream, and deserialize each path */
for(int j=0; j<count; j++){
paths[j] = PathSerializer.deserializePath(os);
}
/**
* now we need to create a new Vector_Path object, and pass in the
* paths we have just exrtracted from the sream
*/
Vector_Path vp = new Vector_Path();
vp.set(paths);
vp.setCurrent_item(paths.length);
/** set the Vector_Path object in the glyph */
glyph.setPaths(vp);
nextObject = glyph;
}else if(type.compareTo(TTGLYPH)==0){
/** read in the entire glyph, except the paths */
TTGlyph glyph = (TTGlyph) os.readObject();
/**
* we now need to extract the paths for this glyph from the stream
*/
/** the number of paths in the glyph */
int count = (Integer) os.readObject();
GeneralPath[] paths = new GeneralPath[count];
/** iterate through the stream, and deserialize each path */
for(int j=0; j<count; j++){
paths[j] = PathSerializer.deserializePath(os);
}
/**
* now we need to create a new Vector_Path object, and pass in the
* paths we have just exrtracted from the sream
*/
Vector_Path vp = new Vector_Path();
vp.set(paths);
vp.setCurrent_item(paths.length);
/** set the Vector_Path object in the glyph */
glyph.setPaths(vp);
nextObject = glyph;
}else if(type.compareTo(T3GLYPH)==0){
nextObject=new T3Glyph(os);
}else if(type.compareTo(TEXTUREDPAINT)==0){
//restore image
byte[] bytes = (byte[]) os.readObject();
/** read the bytes in and rebuild the image */
BufferedImage img = ImageIO.read(new ByteArrayInputStream(bytes));
/**and the rectangle*/
float x = os.readFloat();
float y = os.readFloat();
float w = os.readFloat();
float h = os.readFloat();
Rectangle2D anchor=new Rectangle2D.Float(x,y,w,h);
nextObject=new PdfTexturePaint(img,anchor);
}else if(type.compareTo(AREA)==0){
/** deserialize the path that makes up this Area */
GeneralPath path = PathSerializer.deserializePath(os);
/** create a new Area based on the path */
nextObject = new Area(path);
}else{
/**
* this object has been serialized using the default mechanism,
* so just deserialize normaly
*/
nextObject = os.readObject();
}
items[i]=nextObject;
}
}
public void trim(){
Object[] newItems = new Object[current_item];
System.arraycopy(items,0,newItems,0,current_item);
items=newItems;
max_size=current_item;
}
/**reset pointer used in add to remove items above*/
public void setSize(int currentItem) {
current_item=currentItem;
}
}