/*
* Copyright (c) 1998, 2007, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.print;
import java.awt.Color;
import java.awt.Component;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.GraphicsEnvironment;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.HeadlessException;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.image.BufferedImage;
import java.awt.font.FontRenderContext;
import java.awt.geom.AffineTransform;
import java.awt.geom.PathIterator;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.awt.print.Pageable;
import java.awt.print.PageFormat;
import java.awt.print.Paper;
import java.awt.print.Printable;
import java.awt.print.PrinterException;
import java.awt.print.PrinterIOException;
import java.awt.print.PrinterJob;
import javax.print.DocFlavor;
import javax.print.PrintService;
import javax.print.StreamPrintService;
import javax.print.attribute.HashPrintRequestAttributeSet;
import javax.print.attribute.PrintRequestAttributeSet;
import javax.print.attribute.standard.Chromaticity;
import javax.print.attribute.standard.Copies;
import javax.print.attribute.standard.Destination;
import javax.print.attribute.standard.JobName;
import javax.print.attribute.standard.Sides;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.CharConversionException;
import java.io.File;
import java.io.InputStream;
import java.io.IOException;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.Locale;
import java.util.Properties;
import sun.awt.CharsetString;
import sun.awt.FontConfiguration;
import sun.awt.FontDescriptor;
import sun.awt.PlatformFont;
import sun.awt.SunToolkit;
import java.nio.charset.*;
import java.nio.CharBuffer;
import java.nio.ByteBuffer;
//REMIND: Remove use of this class when IPPPrintService is moved to share directory.
import java.lang.reflect.Method;
/**
* A class which initiates and executes a PostScript printer job.
*
* @author Richard Blanchard
*/
public class PSPrinterJob extends RasterPrinterJob {
/* Class Constants */
/**
* Passed to the <code>setFillMode</code>
* method this value forces fills to be
* done using the even-odd fill rule.
*/
protected static final int FILL_EVEN_ODD = 1;
/**
* Passed to the <code>setFillMode</code>
* method this value forces fills to be
* done using the non-zero winding rule.
*/
protected static final int FILL_WINDING = 2;
/* PostScript has a 64K maximum on its strings.
*/
private static final int MAX_PSSTR = (1024 * 64 - 1);
private static final int RED_MASK = 0x00ff0000;
private static final int GREEN_MASK = 0x0000ff00;
private static final int BLUE_MASK = 0x000000ff;
private static final int RED_SHIFT = 16;
private static final int GREEN_SHIFT = 8;
private static final int BLUE_SHIFT = 0;
private static final int LOWNIBBLE_MASK = 0x0000000f;
private static final int HINIBBLE_MASK = 0x000000f0;
private static final int HINIBBLE_SHIFT = 4;
private static final byte hexDigits[] = {
(byte)'0', (byte)'1', (byte)'2', (byte)'3',
(byte)'4', (byte)'5', (byte)'6', (byte)'7',
(byte)'8', (byte)'9', (byte)'A', (byte)'B',
(byte)'C', (byte)'D', (byte)'E', (byte)'F'
};
private static final int PS_XRES = 300;
private static final int PS_YRES = 300;
private static final String ADOBE_PS_STR = "%!PS-Adobe-3.0";
private static final String EOF_COMMENT = "%%EOF";
private static final String PAGE_COMMENT = "%%Page: ";
private static final String READIMAGEPROC = "/imStr 0 def /imageSrc " +
"{currentfile /ASCII85Decode filter /RunLengthDecode filter " +
" imStr readstring pop } def";
private static final String COPIES = "/#copies exch def";
private static final String PAGE_SAVE = "/pgSave save def";
private static final String PAGE_RESTORE = "pgSave restore";
private static final String SHOWPAGE = "showpage";
private static final String IMAGE_SAVE = "/imSave save def";
private static final String IMAGE_STR = " string /imStr exch def";
private static final String IMAGE_RESTORE = "imSave restore";
private static final String COORD_PREP = " 0 exch translate "
+ "1 -1 scale"
+ "[72 " + PS_XRES + " div "
+ "0 0 "
+ "72 " + PS_YRES + " div "
+ "0 0]concat";
private static final String SetFontName = "F";
private static final String DrawStringName = "S";
/**
* The PostScript invocation to fill a path using the
* even-odd rule. (eofill)
*/
private static final String EVEN_ODD_FILL_STR = "EF";
/**
* The PostScript invocation to fill a path using the
* non-zero winding rule. (fill)
*/
private static final String WINDING_FILL_STR = "WF";
/**
* The PostScript to set the clip to be the current path
* using the even odd rule. (eoclip)
*/
private static final String EVEN_ODD_CLIP_STR = "EC";
/**
* The PostScript to set the clip to be the current path
* using the non-zero winding rule. (clip)
*/
private static final String WINDING_CLIP_STR = "WC";
/**
* Expecting two numbers on the PostScript stack, this
* invocation moves the current pen position. (moveto)
*/
private static final String MOVETO_STR = " M";
/**
* Expecting two numbers on the PostScript stack, this
* invocation draws a PS line from the current pen
* position to the point on the stack. (lineto)
*/
private static final String LINETO_STR = " L";
/**
* This PostScript operator takes two control points
* and an ending point and using the current pen
* position as a starting point adds a bezier
* curve to the current path. (curveto)
*/
private static final String CURVETO_STR = " C";
/**
* The PostScript to pop a state off of the printer's
* gstate stack. (grestore)
*/
private static final String GRESTORE_STR = "R";
/**
* The PostScript to push a state on to the printer's
* gstate stack. (gsave)
*/
private static final String GSAVE_STR = "G";
/**
* Make the current PostScript path an empty path. (newpath)
*/
private static final String NEWPATH_STR = "N";
/**
* Close the current subpath by generating a line segment
* from the current position to the start of the subpath. (closepath)
*/
private static final String CLOSEPATH_STR = "P";
/**
* Use the three numbers on top of the PS operator
* stack to set the rgb color. (setrgbcolor)
*/
private static final String SETRGBCOLOR_STR = " SC";
/**
* Use the top number on the stack to set the printer's
* current gray value. (setgray)
*/
private static final String SETGRAY_STR = " SG";
/* Instance Variables */
private int mDestType;
private String mDestination = "lp";
private boolean mNoJobSheet = false;
private String mOptions;
private Font mLastFont;
private Color mLastColor;
private Shape mLastClip;
private AffineTransform mLastTransform;
/* non-null if printing EPS for Java Plugin */
private EPSPrinter epsPrinter = null;
/**
* The metrics for the font currently set.
*/
FontMetrics mCurMetrics;
/**
* The output stream to which the generated PostScript
* is written.
*/
PrintStream mPSStream;
/* The temporary file to which we spool before sending to the printer */
File spoolFile;
/**
* This string holds the PostScript operator to
* be used to fill a path. It can be changed
* by the <code>setFillMode</code> method.
*/
private String mFillOpStr = WINDING_FILL_STR;
/**
* This string holds the PostScript operator to
* be used to clip to a path. It can be changed
* by the <code>setFillMode</code> method.
*/
private String mClipOpStr = WINDING_CLIP_STR;
/**
* A stack that represents the PostScript gstate stack.
*/
ArrayList mGStateStack = new ArrayList();
/**
* The x coordinate of the current pen position.
*/
private float mPenX;
/**
* The y coordinate of the current pen position.
*/
private float mPenY;
/**
* The x coordinate of the starting point of
* the current subpath.
*/
private float mStartPathX;
/**
* The y coordinate of the starting point of
* the current subpath.
*/
private float mStartPathY;
/**
* An optional mapping of fonts to PostScript names.
*/
private static Properties mFontProps = null;
/* Class static initialiser block */
static {
//enable priviledges so initProps can access system properties,
// open the property file, etc.
java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction() {
public Object run() {
mFontProps = initProps();
return null;
}
});
}
/*
* Initialize PostScript font properties.
* Copied from PSPrintStream
*/
private static Properties initProps() {
// search psfont.properties for fonts
// and create and initialize fontProps if it exist.
String jhome = System.getProperty("java.home");
if (jhome != null){
String ulocale = SunToolkit.getStartupLocale().getLanguage();
try {
File f = new File(jhome + File.separator +
"lib" + File.separator +
"psfontj2d.properties." + ulocale);
if (!f.canRead()){
f = new File(jhome + File.separator +
"lib" + File.separator +
"psfont.properties." + ulocale);
if (!f.canRead()){
f = new File(jhome + File.separator + "lib" +
File.separator + "psfontj2d.properties");
if (!f.canRead()){
f = new File(jhome + File.separator + "lib" +
File.separator + "psfont.properties");
if (!f.canRead()){
return (Properties)null;
}
}
}
}
// Load property file
InputStream in =
new BufferedInputStream(new FileInputStream(f.getPath()));
Properties props = new Properties();
props.load(in);
in.close();
return props;
} catch (Exception e){
return (Properties)null;
}
}
return (Properties)null;
}
/* Constructors */
public PSPrinterJob()
{
}
/* Instance Methods */
/**
* Presents the user a dialog for changing properties of the
* print job interactively.
* @returns false if the user cancels the dialog and
* true otherwise.
* @exception HeadlessException if GraphicsEnvironment.isHeadless()
* returns true.
* @see java.awt.GraphicsEnvironment#isHeadless
*/
public boolean printDialog() throws HeadlessException {
if (GraphicsEnvironment.isHeadless()) {
throw new HeadlessException();
}
if (attributes == null) {
attributes = new HashPrintRequestAttributeSet();
}
attributes.add(new Copies(getCopies()));
attributes.add(new JobName(getJobName(), null));
boolean doPrint = false;
DialogTypeSelection dts =
(DialogTypeSelection)attributes.get(DialogTypeSelection.class);
if (dts == DialogTypeSelection.NATIVE) {
// Remove DialogTypeSelection.NATIVE to prevent infinite loop in
// RasterPrinterJob.
attributes.remove(DialogTypeSelection.class);
doPrint = printDialog(attributes);
// restore attribute
attributes.add(DialogTypeSelection.NATIVE);
} else {
doPrint = printDialog(attributes);
}
if (doPrint) {
JobName jobName = (JobName)attributes.get(JobName.class);
if (jobName != null) {
setJobName(jobName.getValue());
}
Copies copies = (Copies)attributes.get(Copies.class);
if (copies != null) {
setCopies(copies.getValue());
}
Destination dest = (Destination)attributes.get(Destination.class);
if (dest != null) {
try {
mDestType = RasterPrinterJob.FILE;
mDestination = (new File(dest.getURI())).getPath();
} catch (Exception e) {
mDestination = "out.ps";
}
} else {
mDestType = RasterPrinterJob.PRINTER;
PrintService pServ = getPrintService();
if (pServ != null) {
mDestination = pServ.getName();
}
}
}
return doPrint;
}
/**
* Invoked by the RasterPrinterJob super class
* this method is called to mark the start of a
* document.
*/
protected void startDoc() throws PrinterException {
// A security check has been performed in the
// java.awt.print.printerJob.getPrinterJob method.
// We use an inner class to execute the privilged open operations.
// Note that we only open a file if it has been nominated by
// the end-user in a dialog that we ouselves put up.
OutputStream output;
if (epsPrinter == null) {
if (getPrintService() instanceof PSStreamPrintService) {
StreamPrintService sps = (StreamPrintService)getPrintService();
mDestType = RasterPrinterJob.STREAM;
if (sps.isDisposed()) {
throw new PrinterException("service is disposed");
}
output = sps.getOutputStream();
if (output == null) {
throw new PrinterException("Null output stream");
}
} else {
/* REMIND: This needs to be more maintainable */
mNoJobSheet = super.noJobSheet;
if (super.destinationAttr != null) {
mDestType = RasterPrinterJob.FILE;
mDestination = super.destinationAttr;
}
if (mDestType == RasterPrinterJob.FILE) {
try {
spoolFile = new File(mDestination);
output = new FileOutputStream(spoolFile);
} catch (IOException ex) {
throw new PrinterIOException(ex);
}
} else {
PrinterOpener po = new PrinterOpener();
java.security.AccessController.doPrivileged(po);
if (po.pex != null) {
throw po.pex;
}
output = po.result;
}
}
mPSStream = new PrintStream(new BufferedOutputStream(output));
mPSStream.println(ADOBE_PS_STR);
}
mPSStream.println("%%BeginProlog");
mPSStream.println(READIMAGEPROC);
mPSStream.println("/BD {bind def} bind def");
mPSStream.println("/D {def} BD");
mPSStream.println("/C {curveto} BD");
mPSStream.println("/L {lineto} BD");
mPSStream.println("/M {moveto} BD");
mPSStream.println("/R {grestore} BD");
mPSStream.println("/G {gsave} BD");
mPSStream.println("/N {newpath} BD");
mPSStream.println("/P {closepath} BD");
mPSStream.println("/EC {eoclip} BD");
mPSStream.println("/WC {clip} BD");
mPSStream.println("/EF {eofill} BD");
mPSStream.println("/WF {fill} BD");
mPSStream.println("/SG {setgray} BD");
mPSStream.println("/SC {setrgbcolor} BD");
mPSStream.println("/ISOF {");
mPSStream.println(" dup findfont dup length 1 add dict begin {");
mPSStream.println(" 1 index /FID eq {pop pop} {D} ifelse");
mPSStream.println(" } forall /Encoding ISOLatin1Encoding D");
mPSStream.println(" currentdict end definefont");
mPSStream.println("} BD");
mPSStream.println("/NZ {dup 1 lt {pop 1} if} BD");
/* The following procedure takes args: string, x, y, desiredWidth.
* It calculates using stringwidth the width of the string in the
* current font and subtracts it from the desiredWidth and divides
* this by stringLen-1. This gives us a per-glyph adjustment in
* the spacing needed (either +ve or -ve) to make the string
* print at the desiredWidth. The ashow procedure call takes this
* per-glyph adjustment as an argument. This is necessary for WYSIWYG
*/
mPSStream.println("/"+DrawStringName +" {");
mPSStream.println(" moveto 1 index stringwidth pop NZ sub");
mPSStream.println(" 1 index length 1 sub NZ div 0");
mPSStream.println(" 3 2 roll ashow newpath} BD");
mPSStream.println("/FL [");
if (mFontProps == null){
mPSStream.println(" /Helvetica ISOF");
mPSStream.println(" /Helvetica-Bold ISOF");
mPSStream.println(" /Helvetica-Oblique ISOF");
mPSStream.println(" /Helvetica-BoldOblique ISOF");
mPSStream.println(" /Times-Roman ISOF");
mPSStream.println(" /Times-Bold ISOF");
mPSStream.println(" /Times-Italic ISOF");
mPSStream.println(" /Times-BoldItalic ISOF");
mPSStream.println(" /Courier ISOF");
mPSStream.println(" /Courier-Bold ISOF");
mPSStream.println(" /Courier-Oblique ISOF");
mPSStream.println(" /Courier-BoldOblique ISOF");
} else {
int cnt = Integer.parseInt(mFontProps.getProperty("font.num", "9"));
for (int i = 0; i < cnt; i++){
mPSStream.println(" /" + mFontProps.getProperty
("font." + String.valueOf(i), "Courier ISOF"));
}
}
mPSStream.println("] D");
mPSStream.println("/"+SetFontName +" {");
mPSStream.println(" FL exch get exch scalefont");
mPSStream.println(" [1 0 0 -1 0 0] makefont setfont} BD");
mPSStream.println("%%EndProlog");
mPSStream.println("%%BeginSetup");
if (epsPrinter == null) {
// Set Page Size using first page's format.
PageFormat pageFormat = getPageable().getPageFormat(0);
double paperHeight = pageFormat.getPaper().getHeight();
double paperWidth = pageFormat.getPaper().getWidth();
/* PostScript printers can always generate uncollated copies.
*/
mPSStream.print("<< /PageSize [" +
paperWidth + " "+ paperHeight+"]");
final PrintService pservice = getPrintService();
Boolean isPS = (Boolean)java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction() {
public Object run() {
try {
Class psClass = Class.forName("sun.print.IPPPrintService");
if (psClass.isInstance(pservice)) {
Method isPSMethod = psClass.getMethod("isPostscript",
(Class[])null);
return (Boolean)isPSMethod.invoke(pservice, (Object[])null);
}
} catch (Throwable t) {
}
return Boolean.TRUE;
}
}
);
if (isPS) {
mPSStream.print(" /DeferredMediaSelection true");
}
mPSStream.print(" /ImagingBBox null /ManualFeed false");
mPSStream.print(isCollated() ? " /Collate true":"");
mPSStream.print(" /NumCopies " +getCopiesInt());
if (sidesAttr != Sides.ONE_SIDED) {
if (sidesAttr == Sides.TWO_SIDED_LONG_EDGE) {
mPSStream.print(" /Duplex true ");
} else if (sidesAttr == Sides.TWO_SIDED_SHORT_EDGE) {
mPSStream.print(" /Duplex true /Tumble true ");
}
}
mPSStream.println(" >> setpagedevice ");
}
mPSStream.println("%%EndSetup");
}
// Inner class to run "privileged" to open the printer output stream.
private class PrinterOpener implements java.security.PrivilegedAction {
PrinterException pex;
OutputStream result;
public Object run() {
try {
/* Write to a temporary file which will be spooled to
* the printer then deleted. In the case that the file
* is not removed for some reason, request that it is
* removed when the VM exits.
*/
spoolFile = File.createTempFile("javaprint", ".ps", null);
spoolFile.deleteOnExit();
result = new FileOutputStream(spoolFile);
return result;
} catch (IOException ex) {
// If there is an IOError we subvert it to a PrinterException.
pex = new PrinterIOException(ex);
}
return null;
}
}
// Inner class to run "privileged" to invoke the system print command
private class PrinterSpooler implements java.security.PrivilegedAction {
PrinterException pex;
public Object run() {
try {
/**
* Spool to the printer.
*/
if (spoolFile == null || !spoolFile.exists()) {
pex = new PrinterException("No spool file");
return null;
}
String fileName = spoolFile.getAbsolutePath();
String execCmd[] = printExecCmd(mDestination, mOptions,
mNoJobSheet, getJobNameInt(),
1, fileName);
Process process = Runtime.getRuntime().exec(execCmd);
process.waitFor();
spoolFile.delete();
} catch (IOException ex) {
pex = new PrinterIOException(ex);
} catch (InterruptedException ie) {
pex = new PrinterException(ie.toString());
}
return null;
}
}
/**
* Invoked if the application cancelled the printjob.
*/
protected void abortDoc() {
if (mPSStream != null && mDestType != RasterPrinterJob.STREAM) {
mPSStream.close();
}
java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction() {
public Object run() {
if (spoolFile != null && spoolFile.exists()) {
spoolFile.delete();
}
return null;
}
});
}
/**
* Invoked by the RasterPrintJob super class
* this method is called after that last page
* has been imaged.
*/
protected void endDoc() throws PrinterException {
if (mPSStream != null) {
mPSStream.println(EOF_COMMENT);
mPSStream.flush();
if (mDestType != RasterPrinterJob.STREAM) {
mPSStream.close();
}
}
if (mDestType == RasterPrinterJob.PRINTER) {
if (getPrintService() != null) {
mDestination = getPrintService().getName();
}
PrinterSpooler spooler = new PrinterSpooler();
java.security.AccessController.doPrivileged(spooler);
if (spooler.pex != null) {
throw spooler.pex;
}
}
}
/**
* The RasterPrintJob super class calls this method
* at the start of each page.
*/
protected void startPage(PageFormat pageFormat, Printable painter,
int index, boolean paperChanged)
throws PrinterException
{
double paperHeight = pageFormat.getPaper().getHeight();
double paperWidth = pageFormat.getPaper().getWidth();
int pageNumber = index + 1;
/* Place an initial gstate on to our gstate stack.
* It will have the default PostScript gstate
* attributes.
*/
mGStateStack = new ArrayList();
mGStateStack.add(new GState());
mPSStream.println(PAGE_COMMENT + pageNumber + " " + pageNumber);
/* Check current page's pageFormat against the previous pageFormat,
*/
if (index > 0 && paperChanged) {
mPSStream.print("<< /PageSize [" +
paperWidth + " " + paperHeight + "]");
final PrintService pservice = getPrintService();
Boolean isPS =
(Boolean)java.security.AccessController.doPrivileged(
new java.security.PrivilegedAction() {
public Object run() {
try {
Class psClass =
Class.forName("sun.print.IPPPrintService");
if (psClass.isInstance(pservice)) {
Method isPSMethod =
psClass.getMethod("isPostscript",
(Class[])null);
return (Boolean)
isPSMethod.invoke(pservice,
(Object[])null);
}
} catch (Throwable t) {
}
return Boolean.TRUE;
}
}
);
if (isPS) {
mPSStream.print(" /DeferredMediaSelection true");
}
mPSStream.println(" >> setpagedevice");
}
mPSStream.println(PAGE_SAVE);
mPSStream.println(paperHeight + COORD_PREP);
}
/**
* The RastePrintJob super class calls this method
* at the end of each page.
*/
protected void endPage(PageFormat format, Printable painter,
int index)
throws PrinterException
{
mPSStream.println(PAGE_RESTORE);
mPSStream.println(SHOWPAGE);
}
/**
* Convert the 24 bit BGR image buffer represented by
* <code>image</code> to PostScript. The image is drawn at
* <code>(destX, destY)</code> in device coordinates.
* The image is scaled into a square of size
* specified by <code>destWidth</code> and
* <code>destHeight</code>. The portion of the
* source image copied into that square is specified
* by <code>srcX</code>, <code>srcY</code>,
* <code>srcWidth</code>, and srcHeight.
*/
protected void drawImageBGR(byte[] bgrData,
float destX, float destY,
float destWidth, float destHeight,
float srcX, float srcY,
float srcWidth, float srcHeight,
int srcBitMapWidth, int srcBitMapHeight) {
/* We draw images at device resolution so we probably need
* to change the current PostScript transform.
*/
setTransform(new AffineTransform());
prepDrawing();
int intSrcWidth = (int) srcWidth;
int intSrcHeight = (int) srcHeight;
mPSStream.println(IMAGE_SAVE);
/* Create a PS string big enough to hold a row of pixels.
*/
int psBytesPerRow = 3 * (int) intSrcWidth;
while (psBytesPerRow > MAX_PSSTR) {
psBytesPerRow /= 2;
}
mPSStream.println(psBytesPerRow + IMAGE_STR);
/* Scale and translate the unit image.
*/
mPSStream.println("[" + destWidth + " 0 "
+ "0 " + destHeight
+ " " + destX + " " + destY
+"]concat");
/* Color Image invocation.
*/
mPSStream.println(intSrcWidth + " " + intSrcHeight + " " + 8 + "["
+ intSrcWidth + " 0 "
+ "0 " + intSrcHeight
+ " 0 " + 0 + "]"
+ "/imageSrc load false 3 colorimage");
/* Image data.
*/
int index = 0;
byte[] rgbData = new byte[intSrcWidth * 3];
try {
/* Skip the parts of the image that are not part
* of the source rectangle.
*/
index = (int) srcY * srcBitMapWidth;
for(int i = 0; i < intSrcHeight; i++) {
/* Skip the left part of the image that is not
* part of the source rectangle.
*/
index += (int) srcX;
index = swapBGRtoRGB(bgrData, index, rgbData);
byte[] encodedData = rlEncode(rgbData);
byte[] asciiData = ascii85Encode(encodedData);
mPSStream.write(asciiData);
mPSStream.println("");
}
/*
* If there is an IOError we subvert it to a PrinterException.
* Fix: There has got to be a better way, maybe define
* a PrinterIOException and then throw that?
*/
} catch (IOException e) {
//throw new PrinterException(e.toString());
}
mPSStream.println(IMAGE_RESTORE);
}
/**
* Prints the contents of the array of ints, 'data'
* to the current page. The band is placed at the
* location (x, y) in device coordinates on the
* page. The width and height of the band is
* specified by the caller. Currently the data
* is 24 bits per pixel in BGR format.
*/
protected void printBand(byte[] bgrData, int x, int y,
int width, int height)
throws PrinterException
{
mPSStream.println(IMAGE_SAVE);
/* Create a PS string big enough to hold a row of pixels.
*/
int psBytesPerRow = 3 * width;
while (psBytesPerRow > MAX_PSSTR) {
psBytesPerRow /= 2;
}
mPSStream.println(psBytesPerRow + IMAGE_STR);
/* Scale and translate the unit image.
*/
mPSStream.println("[" + width + " 0 "
+ "0 " + height
+ " " + x + " " + y
+"]concat");
/* Color Image invocation.
*/
mPSStream.println(width + " " + height + " " + 8 + "["
+ width + " 0 "
+ "0 " + -height
+ " 0 " + height + "]"
+ "/imageSrc load false 3 colorimage");
/* Image data.
*/
int index = 0;
byte[] rgbData = new byte[width*3];
try {
for(int i = 0; i < height; i++) {
index = swapBGRtoRGB(bgrData, index, rgbData);
byte[] encodedData = rlEncode(rgbData);
byte[] asciiData = ascii85Encode(encodedData);
mPSStream.write(asciiData);
mPSStream.println("");
}
} catch (IOException e) {
throw new PrinterIOException(e);
}
mPSStream.println(IMAGE_RESTORE);
}
/**
* Examine the metrics captured by the
* <code>PeekGraphics</code> instance and
* if capable of directly converting this
* print job to the printer's control language
* or the native OS's graphics primitives, then
* return a <code>PSPathGraphics</code> to perform
* that conversion. If there is not an object
* capable of the conversion then return
* <code>null</code>. Returning <code>null</code>
* causes the print job to be rasterized.
*/
protected Graphics2D createPathGraphics(PeekGraphics peekGraphics,
PrinterJob printerJob,
Printable painter,
PageFormat pageFormat,
int pageIndex) {
PSPathGraphics pathGraphics;
PeekMetrics metrics = peekGraphics.getMetrics();
/* If the application has drawn anything that
* out PathGraphics class can not handle then
* return a null PathGraphics.
*/
if (forcePDL == false && (forceRaster == true
|| metrics.hasNonSolidColors()
|| metrics.hasCompositing())) {
pathGraphics = null;
} else {
BufferedImage bufferedImage = new BufferedImage(8, 8,
BufferedImage.TYPE_INT_RGB);
Graphics2D bufferedGraphics = bufferedImage.createGraphics();
boolean canRedraw = peekGraphics.getAWTDrawingOnly() == false;
pathGraphics = new PSPathGraphics(bufferedGraphics, printerJob,
painter, pageFormat, pageIndex,
canRedraw);
}
return pathGraphics;
}
/**
* Intersect the gstate's current path with the
* current clip and make the result the new clip.
*/
protected void selectClipPath() {
mPSStream.println(mClipOpStr);
}
protected void setClip(Shape clip) {
mLastClip = clip;
}
protected void setTransform(AffineTransform transform) {
mLastTransform = transform;
}
/**
* Set the current PostScript font.
* Taken from outFont in PSPrintStream.
*/
protected boolean setFont(Font font) {
mLastFont = font;
return true;
}
/**
* Given an array of CharsetStrings that make up a run
* of text, this routine converts each CharsetString to
* an index into our PostScript font list. If one or more
* CharsetStrings can not be represented by a PostScript
* font, then this routine will return a null array.
*/
private int[] getPSFontIndexArray(Font font, CharsetString[] charSet) {
int[] psFont = null;
if (mFontProps != null) {
psFont = new int[charSet.length];
}
for (int i = 0; i < charSet.length && psFont != null; i++){
/* Get the encoding of the run of text.
*/
CharsetString cs = charSet[i];
CharsetEncoder fontCS = cs.fontDescriptor.encoder;
String charsetName = cs.fontDescriptor.getFontCharsetName();
/*
* sun.awt.Symbol perhaps should return "symbol" for encoding.
* Similarly X11Dingbats should return "dingbats"
* Forced to check for win32 & x/unix names for these converters.
*/
if ("Symbol".equals(charsetName)) {
charsetName = "symbol";
} else if ("WingDings".equals(charsetName) ||
"X11Dingbats".equals(charsetName)) {
charsetName = "dingbats";
} else {
charsetName = makeCharsetName(charsetName, cs.charsetChars);
}
int styleMask = font.getStyle() |
sun.font.FontManager.getFont2D(font).getStyle();
String style = FontConfiguration.getStyleString(styleMask);
/* First we map the font name through the properties file.
* This mapping provides alias names for fonts, for example,
* "timesroman" is mapped to "serif".
*/
String fontName = font.getFamily().toLowerCase(Locale.ENGLISH);
fontName = fontName.replace(' ', '_');
String name = mFontProps.getProperty(fontName, "");
/* Now map the alias name, character set name, and style
* to a PostScript name.
*/
String psName =
mFontProps.getProperty(name + "." + charsetName + "." + style,
null);
if (psName != null) {
/* Get the PostScript font index for the PostScript font.
*/
try {
psFont[i] =
Integer.parseInt(mFontProps.getProperty(psName));
/* If there is no PostScript font for this font name,
* then we want to termintate the loop and the method
* indicating our failure. Setting the array to null
* is used to indicate these failures.
*/
} catch(NumberFormatException e){
psFont = null;
}
/* There was no PostScript name for the font, character set,
* and style so give up.
*/
} else {
psFont = null;
}
}
return psFont;
}
private static String escapeParens(String str) {
if (str.indexOf('(') == -1 && str.indexOf(')') == -1 ) {
return str;
} else {
int count = 0;
int pos = 0;
while ((pos = str.indexOf('(', pos)) != -1) {
count++;
pos++;
}
pos = 0;
while ((pos = str.indexOf(')', pos)) != -1) {
count++;
pos++;
}
char []inArr = str.toCharArray();
char []outArr = new char[inArr.length+count];
pos = 0;
for (int i=0;i<inArr.length;i++) {
if (inArr[i] == '(' || inArr[i] == ')') {
outArr[pos++] = '\\';
}
outArr[pos++] = inArr[i];
}
return new String(outArr);
}
}
/* return of 0 means unsupported. Other return indicates the number
* of distinct PS fonts needed to draw this text. This saves us
* doing this processing one extra time.
*/
protected int platformFontCount(Font font, String str) {
if (mFontProps == null) {
return 0;
}
CharsetString[] acs =
((PlatformFont)(font.getPeer())).makeMultiCharsetString(str,false);
if (acs == null) {
/* AWT can't convert all chars so use 2D path */
return 0;
}
int[] psFonts = getPSFontIndexArray(font, acs);
return (psFonts == null) ? 0 : psFonts.length;
}
protected boolean textOut(Graphics g, String str, float x, float y,
Font mLastFont, FontRenderContext frc,
float width) {
boolean didText = true;
if (mFontProps == null) {
return false;
} else {
prepDrawing();
/* On-screen drawString renders most control chars as the missing
* glyph and have the non-zero advance of that glyph.
* Exceptions are \t, \n and \r which are considered zero-width.
* Postscript handles control chars mostly as a missing glyph.
* But we use 'ashow' specifying a width for the string which
* assumes zero-width for those three exceptions, and Postscript
* tries to squeeze the extra char in, with the result that the
* glyphs look compressed or even overlap.
* So exclude those control chars from the string sent to PS.
*/
str = removeControlChars(str);
if (str.length() == 0) {
return true;
}
CharsetString[] acs =
((PlatformFont)
(mLastFont.getPeer())).makeMultiCharsetString(str, false);
if (acs == null) {
/* AWT can't convert all chars so use 2D path */
return false;
}
/* Get an array of indices into our PostScript name
* table. If all of the runs can not be converted
* to PostScript fonts then null is returned and
* we'll want to fall back to printing the text
* as shapes.
*/
int[] psFonts = getPSFontIndexArray(mLastFont, acs);
if (psFonts != null) {
for (int i = 0; i < acs.length; i++){
CharsetString cs = acs[i];
CharsetEncoder fontCS = cs.fontDescriptor.encoder;
StringBuffer nativeStr = new StringBuffer();
byte[] strSeg = new byte[cs.length * 2];
int len = 0;
try {
ByteBuffer bb = ByteBuffer.wrap(strSeg);
fontCS.encode(CharBuffer.wrap(cs.charsetChars,
cs.offset,
cs.length),
bb, true);
bb.flip();
len = bb.limit();
} catch(IllegalStateException xx){
continue;
} catch(CoderMalfunctionError xx){
continue;
}
/* The width to fit to may either be specified,
* or calculated. Specifying by the caller is only
* valid if the text does not need to be decomposed
* into multiple calls.
*/
float desiredWidth;
if (acs.length == 1 && width != 0f) {
desiredWidth = width;
} else {
Rectangle2D r2d =
mLastFont.getStringBounds(cs.charsetChars,
cs.offset,
cs.offset+cs.length,
frc);
desiredWidth = (float)r2d.getWidth();
}
/* unprintable chars had width of 0, causing a PS error
*/
if (desiredWidth == 0) {
return didText;
}
nativeStr.append('<');
for (int j = 0; j < len; j++){
byte b = strSeg[j];
// to avoid encoding conversion with println()
String hexS = Integer.toHexString(b);
int length = hexS.length();
if (length > 2) {
hexS = hexS.substring(length - 2, length);
} else if (length == 1) {
hexS = "0" + hexS;
} else if (length == 0) {
hexS = "00";
}
nativeStr.append(hexS);
}
nativeStr.append('>');
/* This comment costs too much in output file size */
// mPSStream.println("% Font[" + mLastFont.getName() + ", " +
// FontConfiguration.getStyleString(mLastFont.getStyle()) + ", "
// + mLastFont.getSize2D() + "]");
getGState().emitPSFont(psFonts[i], mLastFont.getSize2D());
// out String
mPSStream.println(nativeStr.toString() + " " +
desiredWidth + " " + x + " " + y + " " +
DrawStringName);
x += desiredWidth;
}
} else {
didText = false;
}
}
return didText;
}
/**
* Set the current path rule to be either
* <code>FILL_EVEN_ODD</code> (using the
* even-odd file rule) or <code>FILL_WINDING</code>
* (using the non-zero winding rule.)
*/
protected void setFillMode(int fillRule) {
switch (fillRule) {
case FILL_EVEN_ODD:
mFillOpStr = EVEN_ODD_FILL_STR;
mClipOpStr = EVEN_ODD_CLIP_STR;
break;
case FILL_WINDING:
mFillOpStr = WINDING_FILL_STR;
mClipOpStr = WINDING_CLIP_STR;
break;
default:
throw new IllegalArgumentException();
}
}
/**
* Set the printer's current color to be that
* defined by <code>color</code>
*/
protected void setColor(Color color) {
mLastColor = color;
}
/**
* Fill the current path using the current fill mode
* and color.
*/
protected void fillPath() {
mPSStream.println(mFillOpStr);
}
/**
* Called to mark the start of a new path.
*/
protected void beginPath() {
prepDrawing();
mPSStream.println(NEWPATH_STR);
mPenX = 0;
mPenY = 0;
}
/**
* Close the current subpath by appending a straight
* line from the current point to the subpath's
* starting point.
*/
protected void closeSubpath() {
mPSStream.println(CLOSEPATH_STR);
mPenX = mStartPathX;
mPenY = mStartPathY;
}
/**
* Generate PostScript to move the current pen
* position to <code>(x, y)</code>.
*/
protected void moveTo(float x, float y) {
mPSStream.println(trunc(x) + " " + trunc(y) + MOVETO_STR);
/* moveto marks the start of a new subpath
* and we need to remember that starting
* position so that we know where the
* pen returns to with a close path.
*/
mStartPathX = x;
mStartPathY = y;
mPenX = x;
mPenY = y;
}
/**
* Generate PostScript to draw a line from the
* current pen position to <code>(x, y)</code>.
*/
protected void lineTo(float x, float y) {
mPSStream.println(trunc(x) + " " + trunc(y) + LINETO_STR);
mPenX = x;
mPenY = y;
}
/**
* Add to the current path a bezier curve formed
* by the current pen position and the method parameters
* which are two control points and an ending
* point.
*/
protected void bezierTo(float control1x, float control1y,
float control2x, float control2y,
float endX, float endY) {
// mPSStream.println(control1x + " " + control1y
// + " " + control2x + " " + control2y
// + " " + endX + " " + endY
// + CURVETO_STR);
mPSStream.println(trunc(control1x) + " " + trunc(control1y)
+ " " + trunc(control2x) + " " + trunc(control2y)
+ " " + trunc(endX) + " " + trunc(endY)
+ CURVETO_STR);
mPenX = endX;
mPenY = endY;
}
String trunc(float f) {
float af = Math.abs(f);
if (af >= 1f && af <=1000f) {
f = Math.round(f*1000)/1000f;
}
return Float.toString(f);
}
/**
* Return the x coordinate of the pen in the
* current path.
*/
protected float getPenX() {
return mPenX;
}
/**
* Return the y coordinate of the pen in the
* current path.
*/
protected float getPenY() {
return mPenY;
}
/**
* Return the x resolution of the coordinates
* to be rendered.
*/
protected double getXRes() {
return PS_XRES;
}
/**
* Return the y resolution of the coordinates
* to be rendered.
*/
protected double getYRes() {
return PS_YRES;
}
/**
* For PostScript the origin is in the upper-left of the
* paper not at the imageable area corner.
*/
protected double getPhysicalPrintableX(Paper p) {
return 0;
}
/**
* For PostScript the origin is in the upper-left of the
* paper not at the imageable area corner.
*/
protected double getPhysicalPrintableY(Paper p) {
return 0;
}
protected double getPhysicalPrintableWidth(Paper p) {
return p.getImageableWidth();
}
protected double getPhysicalPrintableHeight(Paper p) {
return p.getImageableHeight();
}
protected double getPhysicalPageWidth(Paper p) {
return p.getWidth();
}
protected double getPhysicalPageHeight(Paper p) {
return p.getHeight();
}
/**
* Returns how many times each page in the book
* should be consecutively printed by PrintJob.
* If the printer makes copies itself then this
* method should return 1.
*/
protected int getNoncollatedCopies() {
return 1;
}
protected int getCollatedCopies() {
return 1;
}
private String[] printExecCmd(String printer, String options,
boolean noJobSheet,
String banner, int copies, String spoolFile) {
int PRINTER = 0x1;
int OPTIONS = 0x2;
int BANNER = 0x4;
int COPIES = 0x8;
int NOSHEET = 0x10;
int pFlags = 0;
String execCmd[];
int ncomps = 2; // minimum number of print args
int n = 0;
if (printer != null && !printer.equals("") && !printer.equals("lp")) {
pFlags |= PRINTER;
ncomps+=1;
}
if (options != null && !options.equals("")) {
pFlags |= OPTIONS;
ncomps+=1;
}
if (banner != null && !banner.equals("")) {
pFlags |= BANNER;
ncomps+=1;
}
if (copies > 1) {
pFlags |= COPIES;
ncomps+=1;
}
if (noJobSheet) {
pFlags |= NOSHEET;
ncomps+=1;
}
if (System.getProperty("os.name").equals("Linux")) {
execCmd = new String[ncomps];
execCmd[n++] = "/usr/bin/lpr";
if ((pFlags & PRINTER) != 0) {
execCmd[n++] = new String("-P" + printer);
}
if ((pFlags & BANNER) != 0) {
execCmd[n++] = new String("-J" + banner);
}
if ((pFlags & COPIES) != 0) {
execCmd[n++] = new String("-#" + new Integer(copies).toString());
}
if ((pFlags & NOSHEET) != 0) {
execCmd[n++] = new String("-h");
}
if ((pFlags & OPTIONS) != 0) {
execCmd[n++] = new String(options);
}
} else {
ncomps+=1; //add 1 arg for lp
execCmd = new String[ncomps];
execCmd[n++] = "/usr/bin/lp";
execCmd[n++] = "-c"; // make a copy of the spool file
if ((pFlags & PRINTER) != 0) {
execCmd[n++] = new String("-d" + printer);
}
if ((pFlags & BANNER) != 0) {
execCmd[n++] = new String("-t" + banner);
}
if ((pFlags & COPIES) != 0) {
execCmd[n++] = new String("-n" + new Integer(copies).toString());
}
if ((pFlags & NOSHEET) != 0) {
execCmd[n++] = new String("-o nobanner");
}
if ((pFlags & OPTIONS) != 0) {
execCmd[n++] = new String("-o" + options);
}
}
execCmd[n++] = spoolFile;
return execCmd;
}
private static int swapBGRtoRGB(byte[] image, int index, byte[] dest) {
int destIndex = 0;
while(index < image.length-2 && destIndex < dest.length-2) {
dest[destIndex++] = image[index+2];
dest[destIndex++] = image[index+1];
dest[destIndex++] = image[index+0];
index+=3;
}
return index;
}
/*
* Currently CharToByteConverter.getCharacterEncoding() return values are
* not fixed yet. These are used as the part of the key of
* psfont.propeties. When those name are fixed this routine can
* be erased.
*/
private String makeCharsetName(String name, char[] chs) {
if (name.equals("Cp1252") || name.equals("ISO8859_1")) {
return "latin1";
} else if (name.equals("UTF8")) {
// same as latin 1 if all chars < 256
for (int i=0; i < chs.length; i++) {
if (chs[i] > 255) {
return name.toLowerCase();
}
}
return "latin1";
} else if (name.startsWith("ISO8859")) {
// same as latin 1 if all chars < 128
for (int i=0; i < chs.length; i++) {
if (chs[i] > 127) {
return name.toLowerCase();
}
}
return "latin1";
} else {
return name.toLowerCase();
}
}
private void prepDrawing() {
/* Pop gstates until we can set the needed clip
* and transform or until we are at the outer most
* gstate.
*/
while (isOuterGState() == false
&& (getGState().canSetClip(mLastClip) == false
|| getGState().mTransform.equals(mLastTransform) == false)) {
grestore();
}
/* Set the color. This can push the color to the
* outer most gsave which is often a good thing.
*/
getGState().emitPSColor(mLastColor);
/* We do not want to change the outermost
* transform or clip so if we are at the
* outer clip the generate a gsave.
*/
if (isOuterGState()) {
gsave();
getGState().emitTransform(mLastTransform);
getGState().emitPSClip(mLastClip);
}
/* Set the font if we have been asked to. It is
* important that the font is set after the
* transform in order to get the font size
* correct.
*/
// if (g != null) {
// getGState().emitPSFont(g, mLastFont);
// }
}
/**
* Return the GState that is currently on top
* of the GState stack. There should always be
* a GState on top of the stack. If there isn't
* then this method will throw an IndexOutOfBounds
* exception.
*/
private GState getGState() {
int count = mGStateStack.size();
return (GState) mGStateStack.get(count - 1);
}
/**
* Emit a PostScript gsave command and add a
* new GState on to our stack which represents
* the printer's gstate stack.
*/
private void gsave() {
GState oldGState = getGState();
mGStateStack.add(new GState(oldGState));
mPSStream.println(GSAVE_STR);
}
/**
* Emit a PostScript grestore command and remove
* a GState from our stack which represents the
* printer's gstate stack.
*/
private void grestore() {
int count = mGStateStack.size();
mGStateStack.remove(count - 1);
mPSStream.println(GRESTORE_STR);
}
/**
* Return true if the current GState is the
* outermost GState and therefore should not
* be restored.
*/
private boolean isOuterGState() {
return mGStateStack.size() == 1;
}
/**
* A stack of GStates is maintained to model the printer's
* gstate stack. Each GState holds information about
* the current graphics attributes.
*/
private class GState{
Color mColor;
Shape mClip;
Font mFont;
AffineTransform mTransform;
GState() {
mColor = Color.black;
mClip = null;
mFont = null;
mTransform = new AffineTransform();
}
GState(GState copyGState) {
mColor = copyGState.mColor;
mClip = copyGState.mClip;
mFont = copyGState.mFont;
mTransform = copyGState.mTransform;
}
boolean canSetClip(Shape clip) {
return mClip == null || mClip.equals(clip);
}
void emitPSClip(Shape clip) {
if (clip != null
&& (mClip == null || mClip.equals(clip) == false)) {
String saveFillOp = mFillOpStr;
String saveClipOp = mClipOpStr;
convertToPSPath(clip.getPathIterator(new AffineTransform()));
selectClipPath();
mClip = clip;
/* The clip is a shape and has reset the winding rule state */
mClipOpStr = saveFillOp;
mFillOpStr = saveFillOp;
}
}
void emitTransform(AffineTransform transform) {
if (transform != null && transform.equals(mTransform) == false) {
double[] matrix = new double[6];
transform.getMatrix(matrix);
mPSStream.println("[" + (float)matrix[0]
+ " " + (float)matrix[1]
+ " " + (float)matrix[2]
+ " " + (float)matrix[3]
+ " " + (float)matrix[4]
+ " " + (float)matrix[5]
+ "] concat");
mTransform = transform;
}
}
void emitPSColor(Color color) {
if (color != null && color.equals(mColor) == false) {
float[] rgb = color.getRGBColorComponents(null);
/* If the color is a gray value then use
* setgray.
*/
if (rgb[0] == rgb[1] && rgb[1] == rgb[2]) {
mPSStream.println(rgb[0] + SETGRAY_STR);
/* It's not gray so use setrgbcolor.
*/
} else {
mPSStream.println(rgb[0] + " "
+ rgb[1] + " "
+ rgb[2] + " "
+ SETRGBCOLOR_STR);
}
mColor = color;
}
}
void emitPSFont(int psFontIndex, float fontSize) {
mPSStream.println(fontSize + " " +
psFontIndex + " " + SetFontName);
}
}
/**
* Given a Java2D <code>PathIterator</code> instance,
* this method translates that into a PostScript path..
*/
void convertToPSPath(PathIterator pathIter) {
float[] segment = new float[6];
int segmentType;
/* Map the PathIterator's fill rule into the PostScript
* fill rule.
*/
int fillRule;
if (pathIter.getWindingRule() == PathIterator.WIND_EVEN_ODD) {
fillRule = FILL_EVEN_ODD;
} else {
fillRule = FILL_WINDING;
}
beginPath();
setFillMode(fillRule);
while (pathIter.isDone() == false) {
segmentType = pathIter.currentSegment(segment);
switch (segmentType) {
case PathIterator.SEG_MOVETO:
moveTo(segment[0], segment[1]);
break;
case PathIterator.SEG_LINETO:
lineTo(segment[0], segment[1]);
break;
/* Convert the quad path to a bezier.
*/
case PathIterator.SEG_QUADTO:
float lastX = getPenX();
float lastY = getPenY();
float c1x = lastX + (segment[0] - lastX) * 2 / 3;
float c1y = lastY + (segment[1] - lastY) * 2 / 3;
float c2x = segment[2] - (segment[2] - segment[0]) * 2/ 3;
float c2y = segment[3] - (segment[3] - segment[1]) * 2/ 3;
bezierTo(c1x, c1y,
c2x, c2y,
segment[2], segment[3]);
break;
case PathIterator.SEG_CUBICTO:
bezierTo(segment[0], segment[1],
segment[2], segment[3],
segment[4], segment[5]);
break;
case PathIterator.SEG_CLOSE:
closeSubpath();
break;
}
pathIter.next();
}
}
/*
* Fill the path defined by <code>pathIter</code>
* with the specified color.
* The path is provided in current user space.
*/
protected void deviceFill(PathIterator pathIter, Color color,
AffineTransform tx, Shape clip) {
setTransform(tx);
setClip(clip);
setColor(color);
convertToPSPath(pathIter);
/* Specify the path to fill as the clip, this ensures that only
* pixels which are inside the path will be filled, which is
* what the Java 2D APIs specify
*/
mPSStream.println(GSAVE_STR);
selectClipPath();
fillPath();
mPSStream.println(GRESTORE_STR + " " + NEWPATH_STR);
}
/*
* Run length encode byte array in a form suitable for decoding
* by the PS Level 2 filter RunLengthDecode.
* Array data to encode is inArr. Encoded data is written to outArr
* outArr must be long enough to hold the encoded data but this
* can't be known ahead of time.
* A safe assumption is to use double the length of the input array.
* This is then copied into a new array of the correct length which
* is returned.
* Algorithm:
* Encoding is a lead byte followed by data bytes.
* Lead byte of 0->127 indicates leadByte + 1 distinct bytes follow
* Lead byte of 129->255 indicates 257 - leadByte is the number of times
* the following byte is repeated in the source.
* 128 is a special lead byte indicating end of data (EOD) and is
* written as the final byte of the returned encoded data.
*/
private byte[] rlEncode(byte[] inArr) {
int inIndex = 0;
int outIndex = 0;
int startIndex = 0;
int runLen = 0;
byte[] outArr = new byte[(inArr.length * 2) +2];
while (inIndex < inArr.length) {
if (runLen == 0) {
startIndex = inIndex++;
runLen=1;
}
while (runLen < 128 && inIndex < inArr.length &&
inArr[inIndex] == inArr[startIndex]) {
runLen++; // count run of same value
inIndex++;
}
if (runLen > 1) {
outArr[outIndex++] = (byte)(257 - runLen);
outArr[outIndex++] = inArr[startIndex];
runLen = 0;
continue; // back to top of while loop.
}
// if reach here have a run of different values, or at the end.
while (runLen < 128 && inIndex < inArr.length &&
inArr[inIndex] != inArr[inIndex-1]) {
runLen++; // count run of different values
inIndex++;
}
outArr[outIndex++] = (byte)(runLen - 1);
for (int i = startIndex; i < startIndex+runLen; i++) {
outArr[outIndex++] = inArr[i];
}
runLen = 0;
}
outArr[outIndex++] = (byte)128;
byte[] encodedData = new byte[outIndex];
System.arraycopy(outArr, 0, encodedData, 0, outIndex);
return encodedData;
}
/* written acc. to Adobe Spec. "Filtered Files: ASCIIEncode Filter",
* "PS Language Reference Manual, 2nd edition: Section 3.13"
*/
private byte[] ascii85Encode(byte[] inArr) {
byte[] outArr = new byte[((inArr.length+4) * 5 / 4) + 2];
long p1 = 85;
long p2 = p1*p1;
long p3 = p1*p2;
long p4 = p1*p3;
byte pling = '!';
int i = 0;
int olen = 0;
long val, rem;
while (i+3 < inArr.length) {
val = ((long)((inArr[i++]&0xff))<<24) +
((long)((inArr[i++]&0xff))<<16) +
((long)((inArr[i++]&0xff))<< 8) +
((long)(inArr[i++]&0xff));
if (val == 0) {
outArr[olen++] = 'z';
} else {
rem = val;
outArr[olen++] = (byte)(rem / p4 + pling); rem = rem % p4;
outArr[olen++] = (byte)(rem / p3 + pling); rem = rem % p3;
outArr[olen++] = (byte)(rem / p2 + pling); rem = rem % p2;
outArr[olen++] = (byte)(rem / p1 + pling); rem = rem % p1;
outArr[olen++] = (byte)(rem + pling);
}
}
// input not a multiple of 4 bytes, write partial output.
if (i < inArr.length) {
int n = inArr.length - i; // n bytes remain to be written
val = 0;
while (i < inArr.length) {
val = (val << 8) + (inArr[i++]&0xff);
}
int append = 4 - n;
while (append-- > 0) {
val = val << 8;
}
byte []c = new byte[5];
rem = val;
c[0] = (byte)(rem / p4 + pling); rem = rem % p4;
c[1] = (byte)(rem / p3 + pling); rem = rem % p3;
c[2] = (byte)(rem / p2 + pling); rem = rem % p2;
c[3] = (byte)(rem / p1 + pling); rem = rem % p1;
c[4] = (byte)(rem + pling);
for (int b = 0; b < n+1 ; b++) {
outArr[olen++] = c[b];
}
}
// write EOD marker.
outArr[olen++]='~'; outArr[olen++]='>';
/* The original intention was to insert a newline after every 78 bytes.
* This was mainly intended for legibility but I decided against this
* partially because of the (small) amount of extra space, and
* partially because for line breaks either would have to hardwire
* ascii 10 (newline) or calculate space in bytes to allocate for
* the platform's newline byte sequence. Also need to be careful
* about where its inserted:
* Ascii 85 decoder ignores white space except for one special case:
* you must ensure you do not split the EOD marker across lines.
*/
byte[] retArr = new byte[olen];
System.arraycopy(outArr, 0, retArr, 0, olen);
return retArr;
}
/**
* PluginPrinter generates EPSF wrapped with a header and trailer
* comment. This conforms to the new requirements of Mozilla 1.7
* and FireFox 1.5 and later. Earlier versions of these browsers
* did not support plugin printing in the general sense (not just Java).
* A notable limitation of these browsers is that they handle plugins
* which would span page boundaries by scaling plugin content to fit on a
* single page. This means white space is left at the bottom of the
* previous page and its impossible to print these cases as they appear on
* the web page. This is contrast to how the same browsers behave on
* Windows where it renders as on-screen.
* Cases where the content fits on a single page do work fine, and they
* are the majority of cases.
* The scaling that the browser specifies to make the plugin content fit
* when it is larger than a single page can hold is non-uniform. It
* scales the axis in which the content is too large just enough to
* ensure it fits. For content which is extremely long this could lead
* to noticeable distortion. However that is probably rare enough that
* its not worth compensating for that here, but we can revisit that if
* needed, and compensate by making the scale for the other axis the
* same.
*/
public static class PluginPrinter implements Printable {
private EPSPrinter epsPrinter;
private Component applet;
private PrintStream stream;
private String epsTitle;
private int bx, by, bw, bh;
private int width, height;
/**
* This is called from the Java Plug-in to print an Applet's
* contents as EPS to a postscript stream provided by the browser.
* @param applet the applet component to print.
* @param stream the print stream provided by the plug-in
* @param x the x location of the applet panel in the browser window
* @param y the y location of the applet panel in the browser window
* @param w the width of the applet panel in the browser window
* @param h the width of the applet panel in the browser window
*/
public PluginPrinter(Component applet,
PrintStream stream,
int x, int y, int w, int h) {
this.applet = applet;
this.epsTitle = "Java Plugin Applet";
this.stream = stream;
bx = x;
by = y;
bw = w;
bh = h;
width = applet.size().width;
height = applet.size().height;
epsPrinter = new EPSPrinter(this, epsTitle, stream,
0, 0, width, height);
}
public void printPluginPSHeader() {
stream.println("%%BeginDocument: JavaPluginApplet");
}
public void printPluginApplet() {
try {
epsPrinter.print();
} catch (PrinterException e) {
}
}
public void printPluginPSTrailer() {
stream.println("%%EndDocument: JavaPluginApplet");
stream.flush();
}
public void printAll() {
printPluginPSHeader();
printPluginApplet();
printPluginPSTrailer();
}
public int print(Graphics g, PageFormat pf, int pgIndex) {
if (pgIndex > 0) {
return Printable.NO_SUCH_PAGE;
} else {
// "aware" client code can detect that its been passed a
// PrinterGraphics and could theoretically print
// differently. I think this is more likely useful than
// a problem.
applet.printAll(g);
return Printable.PAGE_EXISTS;
}
}
}
/*
* This class can take an application-client supplied printable object
* and send the result to a stream.
* The application does not need to send any postscript to this stream
* unless it needs to specify a translation etc.
* It assumes that its importing application obeys all the conventions
* for importation of EPS. See Appendix H - Encapsulated Postscript File
* Format - of the Adobe Postscript Language Reference Manual, 2nd edition.
* This class could be used as the basis for exposing the ability to
* generate EPSF from 2D graphics as a StreamPrintService.
* In that case a MediaPrintableArea attribute could be used to
* communicate the bounding box.
*/
public static class EPSPrinter implements Pageable {
private PageFormat pf;
private PSPrinterJob job;
private int llx, lly, urx, ury;
private Printable printable;
private PrintStream stream;
private String epsTitle;
public EPSPrinter(Printable printable, String title,
PrintStream stream,
int x, int y, int wid, int hgt) {
this.printable = printable;
this.epsTitle = title;
this.stream = stream;
llx = x;
lly = y;
urx = llx+wid;
ury = lly+hgt;
// construct a PageFormat with zero margins representing the
// exact bounds of the applet. ie construct a theoretical
// paper which happens to exactly match applet panel size.
Paper p = new Paper();
p.setSize((double)wid, (double)hgt);
p.setImageableArea(0.0,0.0, (double)wid, (double)hgt);
pf = new PageFormat();
pf.setPaper(p);
}
public void print() throws PrinterException {
stream.println("%!PS-Adobe-3.0 EPSF-3.0");
stream.println("%%BoundingBox: " +
llx + " " + lly + " " + urx + " " + ury);
stream.println("%%Title: " + epsTitle);
stream.println("%%Creator: Java Printing");
stream.println("%%CreationDate: " + new java.util.Date());
stream.println("%%EndComments");
stream.println("/pluginSave save def");
stream.println("mark"); // for restoring stack state on return
job = new PSPrinterJob();
job.epsPrinter = this; // modifies the behaviour of PSPrinterJob
job.mPSStream = stream;
job.mDestType = RasterPrinterJob.STREAM; // prevents closure
job.startDoc();
try {
job.printPage(this, 0);
} catch (Throwable t) {
if (t instanceof PrinterException) {
throw (PrinterException)t;
} else {
throw new PrinterException(t.toString());
}
} finally {
stream.println("cleartomark"); // restore stack state
stream.println("pluginSave restore");
job.endDoc();
}
stream.flush();
}
public int getNumberOfPages() {
return 1;
}
public PageFormat getPageFormat(int pgIndex) {
if (pgIndex > 0) {
throw new IndexOutOfBoundsException("pgIndex");
} else {
return pf;
}
}
public Printable getPrintable(int pgIndex) {
if (pgIndex > 0) {
throw new IndexOutOfBoundsException("pgIndex");
} else {
return printable;
}
}
}
}