Pango-1.15.1 is now available for download at:
http://
download.gnome.org/sources/pango/1.15/
or
ftp://ftp.gtk.org/pub/pango/1.15
bb24f4fd3d303e84827f852b38a682f7 pango-1.15.1.tar.bz2
3d2bd774728c11728e15ba429c67e6d5 pango-1.15.1.tar.gz
This is a development release leading up to Pango-1.16.0,
which
will be released just in time for GNOME-2.18.
Notes:
* This is unstable development release. While it has had
fairly extensive testing, there are likely bugs
remaining to be found. This release should not be used
in production.
* Installing this version will overwrite your existing
copy of Pango. If you have problems, you'll need
to reinstall Pango-1.14.x
* Bugs should be reported to http://bugzilla.gnome.org.
About Pango
===========
Pango is a library for layout and rendering of text, with an
emphasis
on internationalization. Pango can be used anywhere that
text layout
is needed, though most of the work on Pango so far has been
done in
the context of the GTK+ widget toolkit. Pango forms the core
of text
and font handling for GTK+-2.x.
Pango is designed to be modular; the core Pango layout
engine can
be used with different font backends. There are three basic
backends,
with multiple options for rendering with each.
- Client side fonts using the FreeType and fontconfig
libraries.
Rendering can be with with Cairo or Xft libraries, or
directly
to an in-memory buffer with no additional libraries.
- Native fonts on Microsoft Windows using Uniscribe for
complex-text handling. Rendering can be done via Cairo or
directly using the native Win32 API.
- Native fonts on MacOS X, rendering via Cairo.
The integration of Pango with Cairo (http://cairographics.org
)
provides a complete solution with high quality text handling
and graphics rendering.
Dynamically loaded modules then handle text layout for
particular
combinations of script and font backend. Pango ships with a
wide
selection of modules, including modules for Hebrew, Arabic,
Hangul, Thai, and a number of Indic scripts. Virtually all
of the
world's major scripts are supported.
As well as the low level layout rendering routines, Pango
includes
PangoLayout, a high level driver for laying out entire
blocks of text,
and routines to assist in editing internationalized text.
More information about Pango is available from http://www.pango.org/.
Bugs should be reported to http://bugzilla.gnome.org.
Pango 1.15 depends on version 2.12.0 or newer of the GLib
library and version 1.2.2 or newer of the cairo library (if
the
cairo backend is desired); more information about GLib and
cairo
can be found at http://www.gtk.org/ and http://cairographics.org/
respectively.
Overview of changes between 1.15.0 and 1.15.1
==============================================
* Add Thai langauage engine. (currently makes
tests/testboundary fail.)
* Add Lao and improved Thai sample text.
* Improved Indic module.
* Output correct path for hexboxes in
pango_cairo_layout_path().
* Implement get_resolution method for the FT2 fontmap.
Shouldn't make
any difference whatsoever. Open a bug if it does.
* Misc small fixes.
* Optimizations:
- Rework PangoLayout algorithms to avoid calling a
recursive call to
pango_layout_get_extents(). Avoids one
pango_font_get_glyph_extents()
call per glyph per layout rendering. We now make 2 such
calls.
- Don't cache run_logical_rect in PangoLayoutIter.
Avoids one pango_font_get_glyph_extents() call per glyph
per layout
rendering. We are down to 1 now.
- Cache line extents. This avoids the final
pango_font_get_glyph_extents()
call per glyph per layout rendering. Now we don't make
any
pango_font_get_glyph_extents() calls when rendering a
layout (some
conditions apply)!
- Replace PANGO_IS_RENDERER with PANGO_IS_RENDERER_FAST
for most
internal uses, that is, just a NULL-check.
- Use simple, fast, casts instead of PANGO_CAIRO_*()
macros where the
object cannot have reached us if it wasn't of the right
type.
* Bugs fixed in this release:
Bug 135683 – Cache glyphstring extents
Red Hat Bug 211964: [ta] Rendering issue with Tamil
Patch from LingNing Zhang
Red Hat Bug 213632: ZWJ (200d) and ZWNJ (200c) showing same
output
Patch from LingNing Zhang
Bug 371388 – Add Thai langauage engine
Patch from Theppitak Karoonboonyanan
Bug 377975 – bug in _pango_glyph_item_iter_next_cluster
Bug 369670 – Checked g_free calls
Changes that also appeared between 1.14.7 and 1.14.8
=====================================================
* Improved thread-safety. Pango is still NOT thread-safe,
but this fixes
lots of crashes using pangocairo from multiple threads.
* Fix out-of-bounds array access.
* Improved Indic shaper.
* Improved Arabic language engine.
* Choose shaper/font for unassigned Unicode codepoints.
* Build fixes.
* Bugs fixed in this release:
Bug 356666 – pango is not thread-safe, nautilus does not
honour that
Bug 352795 – configure.in: Bug in "checking Whether
to write
dependencies into .pc files"
Bug 350132 – backspacing doesn't work properly for Arabic
Bug 330407 – Multiple dependant vowel signs (indic)
displayed as one
Patch from LingNing Zhang
Behdad Esfahbod
04 December 2006
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