octoleo/qpdf
2
1
Fork 0
mirror of https://github.com/qpdf/qpdf.git synced 2025-01-03 07:12:28 +00:00
Code Issues Releases Wiki Activity

Add release notes for changes from 10.0.4 so far

Browse Source
This commit is contained in:
Jay Berkenbilt 2020-12-30 16:45:50 -05:00
parent 4cbf32bfdb
commit c97bd6323e
1 changed files with 122 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

122
manual/qpdf-manual.xml
View File

@ -4818,6 +4818,128 @@ print "\n";
</listitem>
</varlistentry>
-->
<varlistentry>
<term>10.1.0: XXX Month dd, YYYY</term>
<listitem>
<itemizedlist>
<listitem>
<para>
CLI Enhancements
</para>
<itemizedlist>
<listitem>
<para>
Add <option>--flatten-rotation</option> command-line option,
which causes all pages that are rotated using parameters in
the page's dictionary to instead be identically rotated in
the page's contents. The change is not user-visible for
compliant PDF readers but can be used to work around broken
PDF applications that don't properly handle page rotation.
</para>
</listitem>
</itemizedlist>
</listitem>
<listitem>
<para>
Library Enhancements
</para>
<itemizedlist>
<listitem>
<para>
Support for user-provided (pluggable, modular) stream
filters. It is now possible to derive a class from
<classname>QPDFStreamFilter</classname> and register it with
<classname>QPDF</classname> so that regular library methods,
including those used by <classname>QPDFWriter</classname>,
can decode streams with filters not directly supported by
the library. The example
<filename>examples/pdf-custom-filter.cc</filename>
illustrates how to use this capability.
</para>
</listitem>
<listitem>
<para>
Add the optional <function>allow_streams</function>
parameter <function>QPDFObjectHandle::makeDirect</function>.
When <function>QPDFObjectHandle::makeDirect</function> is
called in this way, it preserves references to streams
rather than throwing an exception.
</para>
</listitem>
<listitem>
<para>
Add <function>QPDFObjectHandle::setFilterOnWrite</function>
method. Calling this on a stream prevents
<function>QPDFWriter</function> from attempting to
uncompress, recompress, or otherwise filter a stream even if
it could. Developers can use this to protect streams that
are optimized should be protected from
<classname>QPDFWriter</classname>'s default behavior for any
other reason.
</para>
</listitem>
<listitem>
<para>
Add <classname>ostream</classname>
<literal>&lt;&lt;</literal> operator for
<classname>QPDFObjGen</classname>. This is useful to have
for debugging.
</para>
</listitem>
<listitem>
<para>
Add method
<function>QPDFPageObjectHelper::flattenRotation</function>,
which replaces a page's <literal>/Rotate</literal> keyword
by rotating the page within the content stream and altering
the page's bounding boxes so the rendering is the same. This
can be used to work around buggy PDF readers that can't
properly handle page rotation.
</para>
</listitem>
</itemizedlist>
</listitem>
<listitem>
<para>
C API Enhancements
</para>
<itemizedlist>
<listitem>
<para>
Add several new functions to the C API for working with
objects. These are wrappers around many of the methods in
<classname>QPDFObjectHandle</classname>. Their inclusion
adds considerable new capability to the C API.
</para>
</listitem>
<listitem>
<para>
Add <function>qpdf_register_progress_reporter</function> to
the C API, corresponding to
<function>QPDFWriter::registerProgressReporter</function>.
</para>
</listitem>
</itemizedlist>
</listitem>
<listitem>
<para>
Performance Enhancements
</para>
<itemizedlist>
<listitem>
<para>
Improve steps <classname>QPDFWriter</classname> takes to
prepare a <classname>QPDF</classname> object for writing,
resulting in about an 8% improvement in write performance
while allowing indirect objects to appear in
<literal>/DecodeParms</literal>.
</para>
</listitem>
</itemizedlist>
</listitem>
</itemizedlist>
</listitem>
</varlistentry>
<varlistentry>
<term>10.0.4: November 21, 2020</term>
<listitem>