news 28 Posted March 17, 2009 Pango 1.24.0 is now available from: http://download.gnome.org/sources/pango/1.24/ d209f41079833cd2ef2c5e580ab9c5ee pango-1.24.0.tar.bz2 eb2394d143012432b73b8633ed632726 pango-1.24.0.tar.gz This is a stable release providing new functionality as compared to Pango-1.22, while maintaining source and binary compatibility. However, the PangoFc backend API has changed slightly. Projects subclassing PangoFc are advised to review the changed API. The major change since 1.22 is an overhaul of the internal caching of the PangoFc fontmap implementation. The new code is much faster and more memory efficient. This, combined with other optimizations available in this release, drastically reduce Pango's overhead on Linux systems. By popular request, pango-view now can save to PS, EPS, PDF, and SVG, and the bug with "pango-view -q" requiring an X connection is also fixed. These make pango-view a much more usable tool. It now even ships with a man page. See the NEWS file for an extensive list of improvements. 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 1.24 depends on version 2.17.3 or newer of the GLib library and version 1.7.6 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 1.23.0 and 1.24.0 ============================================= - pango-view improvements: * pango-view -q now works without a X server. * Ability to save to PS, EPS, PDF, and SVG files. Filetype is detected from output file extension. * New options --foreground, --background, and --annotate. * Now installs a manual page, thanks to help2man. - PangoFc API changes: * PangoFcFont now has a "fontmap" property that subclasses can use at construction time to setup the font->fontmap link. * New backend-public API: pango_fc_font_map_find_decoder() - Misc optimizations - Build fixes - Misc bug fixes - Bugs fixed in this release: Bug 547963 – man page for pango-view Bug 502804 – pango-view or pangocairo-view option to annotate Bug 502801 – per-backend pango-view options Bug 502805 – pango-view option for foreground/background color Red Hat Bug 490331 - Crash of galeon in libpango Bug 523166 – pango-view opens display even when invoked with -q Bug 567160 – Share cmap cache between PangoFcFont's of the same face Red Hat Bug 487593 - crash changing language in gdm Bug 572662 – Remove deprecated GTK+ symbols Bug 572529 – Poor -I ordering can break build Overview of changes between 1.22.4 and 1.23.0 ============================================= - Change the PangoFc font loading API to allow for lazy loading of fonts. - Add private PangoFcFontset that loads fallback fonts as needed. - Call FcFontMatch() and only if fallback fonts are needed call FcFontSort(). - Optimize HarfBuzz number of malloc calls - Don't malloc megs of unused memory in HarfBuzz - Print-out, and parse, numeric styles correctly. Things like "DejaVu Sans weight=100" parse as font description now. - New public API: Add two new public macros: PANGO_ATTRIBUTE_INDEX_FROM_TEXT_BEGINNING PANGO_ATTRIBUTE_INDEX_TO_TEXT_END Add new public enum values: PANGO_WEIGHT_BOOK PANGO_WEIGHT_ULTRAHEAVY PANGO_WEIGHT_THIN PANGO_WEIGHT_MEDIUM - Misc bug fixes - Bugs fixed in this release: Bug 569763 – pango doesn't like font descriptions without family! Bug 560792 – Make PangoLayoutLine with line->layout==NULL renderable Bug 567392 – Abiword crashes in pango when opening document with certain locales Bug 566727 – PangoFontsetLazy Bug 567165 – Apply all pattern matrices Bug 567934 – Add introspection support inside pango Bug 549532 – Correction to the sample string for Hindi in pango-language-sample-table.h Bug 566726 – Minor optimization Bug 566941 – Add PANGO_ATTRIBUTE_INDEX_FROM_TEXT_BEGINNING and PANGO_ATTRIBUTE_INDEX_TO_TEXT_END Bug 551469 – Fold ' ( -at -) ' to '-' when parsing PangoLanguages Bug 328206 – Update/remove some old files Bug 166709 – Handle font variants more consistently Bug 166676 – pango_fc_font_map_finalize Bug 164001 - pango-querymodules doesn't work uninstalled on win32 Bug 384362 – pango can't select some font styles Bug 168085 – numeric styles in pango_font_description_to_string() Bug 529591 – Code related to malayalam is misplaced. Patch from Rahul Bhalerao Bug 515807 – Don't bind modules lazily Bug 512662 – Update check.docs for pango-undeclared.txt Bug 565644 – Maybe pango_font_descriptions_free is deprecated Bug 469049 – Fix all compiler warnings Bug 565379 – pango_font_description_better_match some style attributes of old_match are not checked Bug 564877 – pango-engine.h: PANGO_MODULE_PREFIX and G_MODULE_EXPORT Behdad Esfahbod 16 March 2009 _______________________________________________ Share this post Link to post
