/*
* Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Resin Open Source 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, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.quercus.lib.pdf;
import com.caucho.quercus.QuercusModuleException;
import com.caucho.util.L10N;
import com.caucho.vfs.TempStream;
import com.caucho.vfs.WriteStream;
import java.io.IOException;
import java.util.logging.Logger;
/**
* pdf object oriented API facade
*/
public class PDFStream {
private static final Logger log
= Logger.getLogger(PDFStream.class.getName());
private static final L10N L = new L10N(PDFStream.class);
private int _id;
private TempStream _tempStream = new TempStream();
private WriteStream _out = new WriteStream();
private PDFProcSet _procSet;
private PDFFont _font;
private double _fontSize = 24;
private boolean _inText;
private boolean _hasFont;
private boolean _hasTextPos = true;
private double _textX = 0;
private double _textY = 0;
private double _x = 0;
private double _y = 0;
private boolean _hasGraphicsPos = true;
PDFStream(int id)
{
_id = id;
_tempStream = new TempStream();
_tempStream.openWrite();
_out.init(_tempStream);
_procSet = new PDFProcSet();
_procSet.add("/PDF");
_font = null;
_inText = false;
_hasFont = false;
_hasTextPos = true;
_hasGraphicsPos = true;
}
public int getId()
{
return _id;
}
public void setFont(PDFFont font, double size)
{
_font = font;
_fontSize = size;
_hasFont = false;
}
public PDFFont getFont()
{
return _font;
}
public double getFontSize()
{
return _fontSize;
}
public void setTextPos(double x, double y)
{
if (_hasTextPos) {
flushToGraph();
}
_textX = x;
_textY = y;
_hasTextPos = false;
}
public void stroke()
{
flushToGraph();
println("S");
}
public void closepath()
{
flushToGraph();
println("h");
}
public void clip()
{
flushToGraph();
println("W");
}
public void curveTo(double x1, double y1,
double x2, double y2,
double x3, double y3)
{
flushToGraph();
if (x1 == x2 && y1 == y2) {
println(x1 + " " + y1 + " " +
x3 + " " + y3 + " y");
}
else if (x2 == x3 && y2 == y3) {
println(x1 + " " + y1 + " " +
x2 + " " + y2 + " v");
}
else {
println(x1 + " " + y1 + " " +
x2 + " " + y2 + " " +
x3 + " " + y3 + " c");
}
_x = x3;
_y = y3;
_hasGraphicsPos = true;
}
public void endpath()
{
flushToGraph();
println("n");
}
public void closepathStroke()
{
flushToGraph();
println("s");
}
public void closepathFillStroke()
{
flushToGraph();
println("b");
}
public void fill()
{
flushToGraph();
println("f");
}
public void fillStroke()
{
flushToGraph();
println("B");
}
public void lineTo(double x, double y)
{
flushToGraph();
if (x != _x || y != _y || ! _hasGraphicsPos)
println(x + " " + y + " l");
_x = x;
_y = y;
_hasGraphicsPos = true;
}
public void rect(double x, double y, double w, double h)
{
flushToGraph();
println(x + " " + y + " " + w + " " + h + " re");
}
public void moveTo(double x, double y)
{
if (_x != x || _y != y) {
_x = x;
_y = y;
_hasGraphicsPos = false;
}
}
public static int STROKE = 1;
public static int FILL = 2;
public static int BOTH = 3;
public boolean setcolor(String fstype, String colorspace,
double c1, double c2, double c3, double c4)
{
flushToGraph();
int type;
if ("both".equals(fstype) || "fillstroke".equals(fstype))
type = BOTH;
else if ("fill".equals(fstype))
type = FILL;
else if ("stroke".equals(fstype))
type = STROKE;
else
return false;
if ("gray".equals(colorspace)) {
if ((type & STROKE) != 0)
println(c1 + " G");
if ((type & FILL) != 0)
println(c1 + " g");
return true;
}
else if ("rgb".equals(colorspace)) {
if ((type & STROKE) != 0)
println(c1 + " " + c2 + " " + c3 + " RG");
if ((type & FILL) != 0)
println(c1 + " " + c2 + " " + c3 + " rg");
return true;
}
else if ("cmyk".equals(colorspace)) {
if ((type & STROKE) != 0)
println(c1 + " " + c2 + " " + c3 + " " + c4 + " K");
if ((type & FILL) != 0)
println(c1 + " " + c2 + " " + c3 + " " + c4 + " k");
return true;
}
else {
// spot, pattern, iccbasedgray, iccbasedrgb, iccbasedcmyk, lab
return false;
}
}
public void setDash(double b, double w)
{
println("[" + b + " " + w + "] 0 d");
}
public boolean setlinewidth(double w)
{
println(w + " w");
return true;
}
/**
* Saves the graphics state
*/
public boolean save()
{
println("q");
return true;
}
/**
* Restores the graphics state
*/
public boolean restore()
{
println("Q");
return true;
}
public boolean concat(double a, double b, double c,
double d, double e, double f)
{
println(String.format("%.4f %.4f %.4f %.4f %.4f %.4f cm",
a, b, c, d, e, f));
return true;
}
public void show(String text)
{
_procSet.add("/Text");
if (! _inText) {
println("BT");
_inText = true;
}
if (! _hasFont && _font != null) {
println("/" + _font.getPDFName() + " " + _fontSize + " Tf");
_hasFont = true;
}
if (! _hasTextPos) {
println(_textX + " " + _textY + " Td");
_hasTextPos = true;
}
println("(" + text + ") Tj");
}
public void continue_text(String text)
{
println("(" + text + ") T*");
}
public boolean fit_image(PDFImage img)
{
_procSet.add("/ImageB");
_procSet.add("/ImageC");
_procSet.add("/ImageI");
println("/I" + img.getId() + " Do");
return true;
}
public boolean fit_file_image(PDFFileImage img)
{
_procSet.add("/ImageB");
_procSet.add("/ImageC");
_procSet.add("/ImageI");
println("/I" + img.getId() + " Do");
return true;
}
public void flushToGraph()
{
try {
flush();
if (! _hasGraphicsPos) {
_out.println(_x + " " + _y + " m");
_hasGraphicsPos = true;
}
} catch (IOException e) {
throw new QuercusModuleException(e);
}
}
private void println(String s)
{
try {
_out.println(s);
} catch (IOException e) {
throw new QuercusModuleException(e);
}
}
public void flush()
{
try {
if (_inText) {
_out.println("ET");
_inText = false;
_hasTextPos = false;
}
_out.flush();
} catch (IOException e) {
throw new QuercusModuleException(e);
}
}
public PDFProcSet getProcSet()
{
return _procSet;
}
public int getLength()
{
try {
_out.flush();
return _tempStream.getLength();
} catch (IOException e) {
throw new QuercusModuleException(e);
}
}
public void write(PDFWriter out)
throws IOException
{
out.writeStream(getId(), this);
}
public void writeToStream(WriteStream os)
throws IOException
{
_tempStream.writeToStream(os);
_tempStream.destroy();
}
}