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-# LV2 UI Extension
-# Copyright 2009-2011 David Robillard <d@drobilla.net>
-# Copyright 2006-2008 Lars Luthman <lars.luthman@gmail.com>
-#
-# Permission to use, copy, modify, and/or distribute this software for any
-# purpose with or without fee is hereby granted, provided that the above
-# copyright notice and this permission notice appear in all copies.
-#
-# THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-
-@prefix doap: <http://usefulinc.com/ns/doap#> .
-@prefix foaf: <http://xmlns.com/foaf/0.1/> .
-@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
-@prefix owl: <http://www.w3.org/2002/07/owl#> .
-@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
-@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
-@prefix ui: <http://lv2plug.in/ns/extensions/ui#> .
-@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
-
-<http://lv2plug.in/ns/extensions/ui>
- a owl:Ontology ;
- owl:imports <http://lv2plug.in/ns/lv2core> ;
- lv2:documentation """
-<p>This extension defines an interface that can be used in LV2 plugins and
-hosts to create UIs for plugins. The UIs are similar to plugins and reside in
-shared object files in an LV2 bundle. UIs are associated with a plugin in RDF
-using the triples:</p>
-
-<pre class="turtle-code">
-@prefix ui: &lt;http://lv2plug.in/ns/extensions/ui#&gt; .
-
-&lt;http://my.plugin&gt; ui:ui &lt;http://my.pluginui&gt; .
-&lt;http://my.pluginui&gt; a ui:GtkUI ;
- ui:binary &lt;myui.so&gt; .
-</pre>
-
-<p>where &lt;http://my.plugin&gt; is the URI of the plugin,
-&lt;http://my.pluginui&gt; is the URI of the plugin UI and &lt;myui.so&gt; is
-the relative URI to the shared object file.</p>
-
-<p>While it is possible to have the plugin UI and the plugin in the same shared
-object file it is probably a good idea to keep them separate so that hosts that
-don't want UIs don't have to load the UI code. A UI MUST specify its class in
-the RDF data (ui:GtkUI in the above example). The class defines what type the
-UI is, e.g. what graphics toolkit it uses. Any type of UI class can be defined
-separately from this extension.</p>
-
-<p>It is possible to have multiple UIs for the same plugin, or to have the UI
-for a plugin in a different bundle from the actual plugin - this way people
-other than the plugin author can write plugin UIs independently without editing
-the original plugin bundle.</p>
-
-<p>Note that the process that loads the shared object file containing the UI
-code and the process that loads the shared object file containing the actual
-plugin implementation are not necessarily the same process (and not even
-necessarily on the same machine). This means that plugin and UI code can
-<strong>not</strong> use singletons and global variables and expect them to
-refer to the same objects in the UI and the actual plugin. The function
-callback interface defined in this header is the only method of communication
-between UIs and plugin instances (extensions may define more, though this is
-discouraged unless absolutely necessary since the significant benefits of
-network transparency and serialisability are lost).</p>
-
-<p>Since the LV2 specification itself allows for extensions that may add new
-functionality that could be useful to control with a UI, this extension allows
-for meta-extensions that can extend the interface between the UI and the
-host. These extensions mirror the extensions used for plugins - there are
-required and optional "features" that you declare in the RDF data for the
-UI:</p>
-
-<pre class="turtle-code">
-&lt;http://my.pluginui&gt; lv2:requiredFeature &lt;http://my.feature&gt; .
-&lt;http://my.pluginui&gt; lv2:optionalFeature &lt;http://my.feature&gt; .
-</pre>
-
-<p>The rules for a UI with a required or optional feature are identical to
-those of lv2:Plugin instances: if a UI declares a feature as required, the host
-is NOT allowed to load it unless it supports that feature; and if it does
-support a feature, it MUST pass an appropriate LV2_Feature struct to the UI's
-instantiate() method. These features may be used to specify how to pass
-specific types of data between the UI and the plugin port buffers (see
-LV2UI_Write_Function for details).</p>
-
-<p>UIs written to this specification do not need to be threadsafe - the
-functions defined below may only be called in the same thread the UI main loop
-is running in.</p>
-
-<p>Note that this UI extension is NOT a lv2:Feature. There is no way for a
-plugin to know whether the host that loads it supports UIs or not, and the
-plugin must always work without the UI (although it may be rather useless
-unless it has been configured using the UI in a previous session). From the
-plugin perspective, control from a UI is the same as control from anywhere else
-(e.g. the host, the user): via ports.</p>
-
-<p>A UI does not have to be a graphical widget, it could just as well be a
-server listening for OSC input or an interface to some sort of hardware device,
-depending on the RDF class of the UI.</p>
-""" .
-
-ui:UI
- a rdfs:Class ,
- owl:Class ;
- rdfs:subClassOf lv2:Resource ;
- rdfs:label "LV2 UI" ;
- rdfs:comment "A UI for an LV2 plugin" .
-
-ui:GtkUI
- a rdfs:Class ,
- owl:Class ;
- rdfs:subClassOf ui:UI ;
- rdfs:comment """
-A UI where the LV2_Widget is a pointer to a Gtk+ 2.0 compatible GtkWidget,
-and the host guarantees that the Gtk+ library has been initialised and the
-Glib main loop is running before a UI of this type is instantiated.""" .
-
-ui:Qt4UI
- a rdfs:Class ,
- owl:Class ;
- rdfs:subClassOf ui:UI ;
- rdfs:comment """
-A UI where the LV2_Widget is a pointer to a Qt4 compatible QWidget,
-and the host guarantees that the Qt4 library has been initialised and the
-Qt4 main loop is running before a UI of this type is instantiated.""" .
-
-ui:X11UI
- a rdfs:Class ,
- owl:Class ;
- rdfs:subClassOf ui:UI ;
- rdfs:comment """
-A UI where the LV2_Widget is an X11 window ID. Note this is actually an
-integer, i.e. the LV2_Widget is not a pointer to an X11 window ID, but should
-be itself taken as an integer value.""" .
-
-ui:makeSONameResident
- a lv2:Feature ;
- owl:deprecated "true"^^xsd:boolean ;
- lv2:documentation """
-<p>DEPRECATED</p>
-
-<p>This feature was intended to support UIs that link against toolkit
-libraries which may not be unloaded during the lifetime of the host.
-This is better achieved by using the appropriate flags when linking the
-UI, e.g. <code>gcc -Wl,nodelete</code>.</p>
-""" .
-
-ui:noUserResize
- a lv2:Feature ;
- lv2:documentation """
-<p>If a UI requires this feature it indicates that it does not make sense
-to let the user resize the main widget, and the host should prevent that.
-This feature may not make sense for all UI types. The data pointer for the
-LV2_Feature for this feature should always be set to NULL.</p>
-""" .
-
-ui:fixedSize
- a lv2:Feature ;
- lv2:documentation """
-<p>If a UI requires this feature it indicates the same thing as
-ui:noUserResize, and additionally it means that the UI will not resize
-the main widget on its own - it will always remain the same size (e.g. a
-pixmap based GUI). This feature may not make sense for all UI types.
-The data pointer for the LV2_Feature for this feature should always be set
-to NULL.</p>
-""" .
-
-ui:parent
- a lv2:Feature ;
- lv2:documentation """
-<p>The parent for the UI.</p>
-
-<p>This feature can be used to pass a parent (e.g. a widget, container, canvas,
-etc.) the UI should be a child of. The format of data pointer of this feature
-is determined by the UI type, and is generally the same type as the LV2_Widget
-the UI would return (e.g. for a GtkUI the data would be a pointer to a
-GtkWidget which is a GtkContainer). This is particularly useful for
-cross-toolkit embedding, where the parent often must be known at construction
-time for embedding to work correctly. UIs should not require this feature
-unless it is absolutely necessary for them to work at all.</p>
-""" .
-
-ui:PortNotification
- a rdfs:Class ,
- owl:Class ;
- rdfs:subClassOf [
- a owl:Restriction ;
- owl:onProperty ui:plugin ;
- owl:someValuesFrom lv2:Plugin ;
- owl:cardinality 1 ;
- rdfs:comment """
-A PortNotification MUST have exactly one ui:plugin which is a lv2:Plugin.
-"""
- ] , [
- a owl:Restriction ;
- owl:onProperty ui:portIndex ;
- owl:someValuesFrom xsd:decimal ;
- owl:cardinality 1 ;
- rdfs:comment """
-A PortNotification MUST have exactly one ui:portIndex which is an xsd:decimal.
-"""
- ] ;
- rdfs:comment "Port Notification" .
-
-ui:portNotification
- a rdf:Property ,
- owl:ObjectProperty ;
- rdfs:domain ui:UI ;
- rdfs:range ui:PortNotification ;
- lv2:documentation """
-<p>Indicates that a UI should receive notification (via
-LV2UI_Descriptor::port_event()) when a particular port's value changes.</p>
-""" .
-
-ui:plugin
- a rdf:Property ,
- owl:ObjectProperty ;
- rdfs:domain ui:PortNotification ;
- rdfs:range lv2:Plugin ;
- rdfs:comment """
-The plugin a portNotification applies to.
-""" .
-
-ui:portIndex
- a rdf:Property ,
- owl:DatatypeProperty ;
- rdfs:domain ui:PortNotification ;
- rdfs:range xsd:decimal ;
- rdfs:comment """
-The index of the port a portNotification applies to.
-""" .