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/*
* ===========================================
* Java Pdf Extraction Decoding Access Library
* ===========================================
*
* Project Info: http://www.idrsolutions.com
* Help section for developers at http://www.idrsolutions.com/java-pdf-library-support/
*
* (C) Copyright 1997-2013, 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.BasicStroke;
import java.awt.geom.AffineTransform;
import java.awt.geom.Area;
import java.awt.geom.GeneralPath;
import java.awt.geom.PathIterator;
import java.awt.geom.Rectangle2D;
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 java.util.Arrays;
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.utils.LogWriter;
/**
* 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 {
private static final long serialVersionUID = -4111323050723240784L;
// 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[this.max_size];
// default size
public Vector_Object() {
}
private int checkPoint = -1;
/**
* used to store end of PDF components
*/
public void resetToCheckpoint() {
if (this.checkPoint != -1) this.current_item = this.checkPoint;
this.checkPoint = -1;
}
/**
* used to rollback array to point
*/
public void setCheckpoint() {
if (this.checkPoint == -1) this.checkPoint = this.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) {
this.max_size = number;
this.items = new Object[this.max_size];
}
// /////////////////////////////////
/**
* extract underlying data
*/
final public Object[] get() {
return this.items;
}
// ///////////////////////////////////
/**
* pull item from top as in LIFO stack
*/
final public Object pull() {
if (this.current_item > 0) this.current_item--;
return (this.items[this.current_item]);
}
// ///////////////////////////////////
/**
* put item at top as in LIFO stack
*/
final public void push(Object value) {
checkSize(this.current_item);
this.items[this.current_item] = value;
this.current_item++;
}
// //////////////////////////////////
/**
* see if value present
*/
final public boolean contains(Object value) {
boolean flag = false;
for (int i = 0; i < this.current_item; i++) {
if (this.items[i].equals(value)) {
i = this.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(this.current_item);
this.items[this.current_item] = value;
this.current_item++;
}
// /////////////////////////////////
/**
* set an element
*/
final public void setElementAt(Object new_name, int id) {
if (id >= this.max_size) checkSize(id);
this.items[id] = new_name;
}
// /////////////////////////////////
/**
* remove element at
*/
final public Object elementAt(int id) {
if (id >= this.max_size) return null;
else return this.items[id];
}
// /////////////////////////////////
/**
* replace underlying data
*/
final public void set(Object[] new_items) {
this.items = new_items;
}
// /////////////////////////////////
/**
* clear the array
*/
final public void clear() {
this.checkPoint = -1;
// items = null;
// holds the data
// items = new Object[max_size];
if (this.current_item > 0) {
for (int i = 0; i < this.current_item; i++)
this.items[i] = null;
}
else {
for (int i = 0; i < this.max_size; i++)
this.items[i] = null;
}
this.current_item = 0;
}
// /////////////////////////////////
/**
* return the size
*/
final public int size() {
return this.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(this.items, id + 1, this.items, id, this.current_item - 1 - id);
// flush last item
this.items[this.current_item - 1] = null;
}
else this.items[0] = null;
// reduce counter
this.current_item--;
}
// //////////////////////////////////
/**
* check the size of the array and increase if needed
*/
private void checkSize(int i) {
if (i >= this.max_size) {
int old_size = this.max_size;
this.max_size = this.max_size + this.increment_size;
// allow for it not creating space
if (this.max_size <= i) this.max_size = i + this.increment_size + 2;
Object[] temp = this.items;
this.items = new Object[this.max_size];
System.arraycopy(temp, 0, this.items, 0, old_size);
// increase size increase for next time
this.increment_size = incrementSize(this.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(this.max_size);
// int basicStrokes=0,bufferedImages=0,paints=0,generalPaths=0,t3glyphs=0,t1glyphs=0,ttglyphs=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 < this.max_size; i++) {
Object nextObj = this.items[i];
if (nextObj instanceof BasicStroke) {
// basicStrokes++;
/** write out a flag to indicate this is a BasicStroke object */
os.writeObject(BASICSTROKE);
BasicStroke stroke = (BasicStroke) this.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) this.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) this.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) this.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) {
// tell user and log
if (LogWriter.isOutput()) LogWriter.writeLog("Exception: " + e.getMessage());
}
}
}
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();
this.max_size = size;
this.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();
}
this.items[i] = nextObject;
}
}
public void trim() {
Object[] newItems = new Object[this.current_item];
System.arraycopy(this.items, 0, newItems, 0, this.current_item);
this.items = newItems;
this.max_size = this.current_item;
}
/** reset pointer used in add to remove items above */
public void setSize(int currentItem) {
this.current_item = currentItem;
}
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
builder.append("Vector_Object [current_item=");
builder.append(this.current_item);
builder.append(", ");
if (this.items != null) {
builder.append("items=[");
for (int i = 0; i < this.size(); i++) {
builder.append(this.items[i]);
builder.append(",");
}
}
builder.append("]");
return builder.toString();
}
}