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D-Bus AT-SPI
------------
This version of at-spi is a major break from previous versions.
It has been completely rewritten to use D-Bus rather than
ORBIT / CORBA for its transport protocol.
A page including instructions for testing, project status and
TODO items is kept up to date at:
http://www.linuxfoundation.org/en/AT-SPI_on_D-Bus
The mailing list used for general questions is:
accessibility-atspi@lists.linux-foundation.org
For bug reports, feature requests, patches or enhancements please use
bugzilla. The freedesktop project name is at-spi2.
http://bugs.freedesktop.org
A git repository with the latest development code is available at:
git://anongit.freedesktop.org/git/at-spi2
More information
----------------
The project was started with a D-Bus performance review
the results of which are available on the GNOME wiki. Keep in
mind that the D-Bus AT-SPI design documents on this page
have not been kept up to date.
http://live.gnome.org/GAP/AtSpiDbusInvestigation/
Other sources of relevant information about AT-SPI and Accessibility
include:
http://live.gnome.org/Accessibility
http://www.sun.com/software/star/gnome/accessibility/architecture.xml
http://accessibility.kde.org/developer/atk.php
http://www.gnome.org/~billh/at-spi-idl/html/
Contents of this package
------------------------
This package includes the protocol definitions for the new D-Bus
at-spi, a gtk-module that bridges ATK to the new D-Bus based AT-SPI
as well as 'C' and Python client libraries.
Also included is the daemon neccessary for forwarding device events
and registering accessible applicaitons.
Directory structure
-------------------
The directories within this package are arranged as follows:
idl
This directory contains the interface definitions
(in Interface Definition Language) for the
accessibility support interfaces exposed by
the AT central registry, accessible applications,
and UI components.
This is possibly historic. The idl formed the basis
for the XML protocol definitions now located
in the directory "xml".
xml
This directory contains XML documents describing
the D-Bus protocol in a subset of Telepathy XML.
tools
Miscellaneous tools. Mostly for converting protocol
XML into D-Bus introspection, 'C' types and documentation.
droute
Contains a framework for registering objects
with a D-Bus connection and for routing messages to
the implementing object.
Used by the ATK adaptor.
dbind
Library to ease making D-Bus method calls, contains
marshalling code to convert function arguments
and a provided D-Bus signature into a D-Bus message.
Used by cspi.
spi-common
Contains 'C' types derived from the D-Bus
protocol specification. These types are used by
both the registry daemon and the ATK adaptor.
Structures are mainly related to events.
registryd
This directory contains code specific to the
central accessibility registry, and the registry
executable is built in this directory.
atk-adaptor
This directory contains code that bridges
the at-spi to the GTK+ toolkit, and which is
loaded at runtime by GTK+-based Gnome applications.
The 'bridge' automatically registers GTK+-2.0
applications with the accessibility registry,
and relays UI events from application to registry.
It is also responsible for servicing requests from
the registry to register handlers for specific event
types.
cspi
The client (AT) side interface - 'C' bindings.
registryd
The registry daemon code. The registry daemon
keeps a register of accessible applications and presents
this to clients (ATs).
It is also responsible for delivering device events.
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