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* Updated: xpdf-3.02-1: An open source viewer for Portable Document Format (PDF) files
@ 2008-04-08 7:51 Dr. Volker Zell
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From: Dr. Volker Zell @ 2008-04-08 7:51 UTC (permalink / raw)
A new version of 'xpdf' has been uploaded to a server near you.
Xpdf is an open source viewer for Portable Document Format (PDF)
files. (These are also sometimes also called 'Acrobat' files, from the
name of Adobe's PDF software.) The Xpdf project also includes a PDF text
extractor, PDF-to-PostScript converter, and various other utilities. Xpdf
runs under the X Window System on UNIX, VMS, and OS/2. The non-X components
(pdftops, pdftotext, etc.) also run on Win32 systems and should run on pretty
much any system with a decent C++ compiler. Xpdf is designed to be small and
efficient. It can use Type 1 or TrueType fonts.
o Update to latest upstream release
o Incorporated latest security patches from the xpdf homepage
o Changed to cygport build framework
o Language support packages included
Added anti-aliasing for vector graphics; added the vectorAntialias
xpdfrc option; added the "-aaVector" switch to xpdf and pdftoppm.
Implemented stroke adjustment (always enabled by default, ignoring the
SA parameter, to match Adobe's behavior), and added the strokeAdjust
Support PDF 1.6 and PDF 1.7.
Added support for AES decryption.
Added support for OpenType fonts (only tested with 8-bit CFF data so
Added user-configurable key/mouse bindings - the bind/unbind xpdfrc
Cleaned up the full-screen mode code and added the ability to toggle
it on the fly (the default key binding is alt-f).
Pdfimages with the -j option now writes JPEG files for 1-component
(grayscale) DCT images, in addition to 3-component (RGB) images.
Fixed bugs in handling sampled (type 0) functions with 32-bit
Fixed some things to support DeviceN color spaces with up to 32
Pdftops now constructs the %%Creator and %%Title DSC comments from the
relevant information in the PDF Info dictionary.
Tweak the TrueType font encoding deciphering algorithm.
Added the "mapUnkownCharNames" xpdfrc option.
Fix a bug (that only showed up with certain window managers) in the
intermediate resize event optimization. [Thanks to Michael Rogers.]
Check for a broken/missing embedded font (this was causing xpdf to
Added support for transfer functions in PostScript output.
Be a bit more tolerant of Link destinations that contain null values
for positioning parameters.
Use ordered dot dithering instead of clustered dot dithering at
resolutions below 300 dpi (for monochrome output).
Fixed security holes (bounds checking issues) in several places.
Don't bother creating a SplashFont (allocating memory) for fonts that
are only used for hidden text - this avoids problems with fonts of
unreasonably large sizes.
Clipping in TextOutputDev was off for characters on the left edge of
The scn and SCN operators weren't correctly handling colors with more
than four components.
FoFiType1::writeEncoded wasn't always correctly finding the end of the
Use the ColorTransform parameter in the DCTDecode stream dictionary.
Type 3 fonts are allowed to have a bbox of [0 0 0 0], which means
"unspecified" -- don't issue error messages in that case.
Perform the transform (to device space) in Splash instead of in
SplashOutputDev -- this is needed to correctly handle round joins
and caps on stroked paths.
PSOutputDev now rasterizes any pages that use transparency.
Limit the crop, bleed, trim, and art boxes to the edges of the media
box (per the PDF spec).
Change GString to increase the allocation increment by powers of two.
Handle whitespace in hex strings in CMap files/streams.
Use strings instead of names for separation colorant names in
For explicitly masked images where the mask is higher resolution than
the image, use the soft mask code.
Avoid problems with very large x-steps in the PostScript output for
tiling pattern fills.
Avoid a divide-by-zero in stitching functions which have a subfunction
with empty bounds.
Honor the "Hidden", "NoView", and "Print" flags on annotations.
Rewrote the pixel rendering code in Splash to use a single set of
pixel pipeline functions.
Added support for transparency groups and soft masks.
Fixed the transparency blend functions to match the addendum published
Changed Splash/SplashBitmap to store alpha in a separate plane.
Setting the color space now selects the correct default color for that
Remove the mutex lock from GlobalParams::getErrQuiet() to avoid a
deadlock when parseCIDToUnicode() or parseUnicodeToUnicode() calls
it from inside a locked section.
Added error checking (on the argument count) in the sc/SC/scn/SCN
Skip over notdef glyphs in TrueType fonts (which sometimes get drawn
as little boxes), to match Adobe's behavior.
Painting operations in a Separation color space with the "None"
colorant or a DeviceN color space with all colorants set to "None"
never mark the page.
Fixed an obscure bug in the JPX decoder - it wasn't reading the extra
stuffing byte in the case where the last byte of a packet header was
Change the TrueType font parser (FoFiTrueType) to change the glyph
count rather than report an error if the 'loca' table is too small.
Fixed a couple of bugs in the JBIG2 decoder.
Added stochastic clustered dot dithering.
Added the screenType, screenSize, screenDotRadius, screenGamma,
screenBlackThreshold, and screenWhiteThreshold xpdfrc settings.
PSOutputDev now correctly handles invalid Type 3 charprocs which don't
start with a d0 or d1 operator
FreeType 2.2.x support - get rid of the FT_INTERNAL_OBJECTS_H include,
and add some 'const' declarations.
Handle PDFDocEncoding in Info dictionary strings.
Tweak the xref repair code - ignore whitespace at the start of lines
when looking for objects.
Added the "-exec" switch to xpdf.
Removed the xpdf.viKeys X resource.
Changed the color key / explicit masked image code in PSOutputDev to
generate better PS code, including a Level 3 option.
Tweaked the DEBUG_MEM code for performance.
Move the JBIG2 global stream reading code into reset() instead of the
constructor - this way, pdftotext doesn't end up reading the global
Added the "-preload" option to pdftops and the psPreload xpdfrc
Added the "zoom to selection" command (on the popup menu).
Fix a bug (in xpdf/pdftoppm/pdftops) with tiling patterns whose bbox
size is different from their xStep/yStep.
Implemented stroke with pattern color spaces.
Following a link to a page whose CropBox was different from the
MediaBox was resulting in an incorrect scroll position.
Parse truncated date strings from the Info dictionary correctly.
Change FoFiType1 to handle Type 1 fonts with two /Encoding keys.
Extend the PSOutputDev shaded fill code to handle DeviceCMYK shaded
fills in level2sep and level3sep modes.
Detect infinite loops in the Page tree.
Optimized the ASCII85Encoder code.
Tweaked the text extractor to do a better job of lining up rows of
Leave images compressed (or re-compress them with RLE) in PostScript
output when setting up images for forms and Type 3 fonts (or with
Extend FoFiType1 to handle Type 1 fonts with octal character codes in
Use a custom string formatter to avoid problems with locale-based decimal
formatting (commas instead of periods) in PS output.
Allow comments in PostScript-type functions.
Change the TrueType font parser (FoFiTrueType) to delete glyf table
entries that are too short.
To update your installation, click on the "Install Cygwin now" link on the
http://cygwin.com/ web page. This downloads setup.exe to your system.
Save it and run setup, answer the questions and pick up 'xpdf' from
the 'X11' or 'Doc' category (it should already be selected).
Note that downloads from sources.redhat.com (aka cygwin.com) aren't
allowed due to bandwidth limitations. This means that you will need to
find a mirror which has this update, please choose the one nearest to you:
If you want to make a point or ask a question the Cygwin mailing list is
the appropriate place.
Dr. Volker Zell
volunteer cygwin xpdf maintainer
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2008-04-08 7:51 Updated: xpdf-3.02-1: An open source viewer for Portable Document Format (PDF) files Dr. Volker Zell
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