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navigation: Add some partial documentation

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Add a general documentation blurb for the GstNavigation functionality.
Still lacks some example code and detail on how to implement it.
This commit is contained in:
Jan Schmidt 2009-07-13 17:54:40 +01:00
parent f6a508d963
commit 85de44aa01
1 changed files with 47 additions and 1 deletions
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48
gst-libs/gst/interfaces/navigation.c
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@ -1,7 +1,8 @@
/* GStreamer Navigation
* Copyright (C) 2003 Ronald Bultje <rbultje@ronald.bitfreak.net>
* Copyright (C) 2007-2009 Jan Schmidt <thaytan@noraisin.net>
*
* navigation.c: navigation design virtual class function wrappers
* navigation.c: navigation event virtual class function wrappers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
@ -19,6 +20,51 @@
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:gstnavigation
* @short_description: Interface for creating, sending and parsing navigation
* events. Navigation events are used for conveying mouse movement, button clicks,
* key presses and specific commands such as DVD menu navigation.
*
* <refsect2>
* <para>
* The Navigation interface is used for creating and injecting navigation related
* events such as mouse button presses, cursor motion and key presses. The associated
* library also provides methods for parsing received events, and for sending and
* receiving navigation related bus events.
* </para>
* <para>
* The main parts of the API are:
* <itemizedlist>
* <listitem>
* <para>
* The GstNavigation interface, implemented by elements which provide an application
* with the ability to create and inject navigation events into the pipeline.
* </para>
* </listitem>
* <listitem>
* <para>
* GstNavigation event handling API. GstNavigation events are created in response to
* calls on a GstNavigation interface implementation, and sent in the pipeline. Upstream
* elements can use the navigation event API functions to parse the contents of received
* messages.
* </para>
* </listitem>
* <listitem>
* <para>
* GstNavigation message handling API. GstNavigation messages may be sent on the message
* bus to inform applications of navigation related changes in the pipeline, such as the
* mouse moving over a clickable region, or the set of available angles changing.
* </para><para>
* The GstNavigation message functions provide functions for creating and parsing
* custom bus messages for signalling GstNavigation changes.
* </para>
* </listitem>
* </itemizedlist>
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif