[kepler-users] How to change the Delay icon

[Christopher Brooks]

Hi Bertram,

The "Delay" actor in your model has a _icon attribute that sets the icon.
I suspect that this model was copy and pasted from a Ptolemy model.

>  <entity name="Delay" class="ptolemy.domains.sdf.lib.SampleDelay">
>         <property name="initialOutputs" class="ptolemy.data.expr.Parameter" value="{1}">
>         </property>
>         <property name="_icon" class="ptolemy.vergil.icon.BoxedValueIcon">
>             <property name="attributeName" class="ptolemy.kernel.util.StringAttribute" value="initialOutputs">
>             </property>
>             <property name="displayWidth" class="ptolemy.data.expr.Parameter" value="20">
>             </property>
>         </property>
>         <property name="_location" class="ptolemy.kernel.util.Location" value="[340.0, 70.0]">
>         </property>
>     </entity>

The "SampleDelay" actor xml is below.  Presumably it is getting
its icon from a SVG file somewhere.

>     <entity name="SampleDelay" class="ptolemy.domains.sdf.lib.SampleDelay">
>         <property name="initialOutputs" class="ptolemy.data.expr.Parameter" value="{0}">
>         </property>
> <property name="KeplerDocumentation" class="ptolemy.vergil.basic.KeplerDocumentationAttribute">
> <property name="description" class="ptolemy.kernel.util.ConfigurableAttribute"><configure>null</configure></property>
> <property name="author" class="ptolemy.kernel.util.ConfigurableAttribute"><configure>Steve Neuendorffer, Edward A. Lee</configure></property>
> <property name="version" class="ptolemy.kernel.util.ConfigurableAttribute"><configure>null</configure></property>
> <property name="userLevelDocumentation" class="ptolemy.kernel.util.ConfigurableAttribute"><configure><p>The SampleDelay actor outputs a set of tokens that are used as initial input values when a workflow starts up. The actor is used to break dependency cycles created by  loops in SDF models. </p>

<p>Feedback loops, created when an actor cycles its own output into its input port, can create "deadlock" errors under an SDF Director. The deadlock errors occur because the actor depends on its own output value as an initial input. To fix this problem, use a SampleDelay actor to inject an initial value into the workflow.</p>

<p>Specify an array of initial values with the initialOutputs parameter. By default, the actor produces a single integer token, {0}.</p></configure></property>
> <property name="port:output" class="ptolemy.kernel.util.ConfigurableAttribute"><configure>An output port that broadcasts the initial tokens.</configure></property>
> <property name="port:input" class="ptolemy.kernel.util.ConfigurableAttribute"><configure>An input port that accepts tokens of any type.</configure></property>
> <property name="prop:initialOutputs" class="ptolemy.kernel.util.ConfigurableAttribute"><configure>The values produced when the workflow is initialized. The value must be an array token, and defaults to an array that contains a single integer token, {0}.</configure></property>
> </property>        <property name="entityId" class="org.kepler.moml.NamedObjId" value="urn:lsid:kepler-project.org:actor:365:1">
>         </property>
>         <property name="class" class="ptolemy.kernel.util.StringAttribute" value="ptolemy.domains.sdf.lib.SampleDelay">
>             <property name="id" class="ptolemy.kernel.util.StringAttribute" value="urn:lsid:kepler-project.org:class:1131:1">
>             </property>
>         </property>
>         <property name="semanticType00" class="org.kepler.sms.SemanticType" value="urn:lsid:localhost:onto:1:1#ControlActor">
>         </property>
>         <property name="semanticType11" class="org.kepler.sms.SemanticType" value="urn:lsid:localhost:onto:2:1#WorkflowControl">
>         </property>
>         <property name="_location" class="ptolemy.kernel.util.Location" value="[315.0, 175.0]">
>         </property>
>     </entity>

I tried searching for SampleDelay and dragging in the actor and it got
the right Kepler icon.

I also tried opening up a Ptolemy model that has a SampleDelay actor and it
got the right Kepler icon.

In Kepler, I don't think the user can edit the icon from the UI.  In Ptolemy,
there is an icon editor.

_Christopher


On 6/21/10 10:11 AM, Bertram Ludaescher wrote:
> Hi everybody:
>
> The attached workflow / screenshot has two different instances of the
> very same Delay actor,
> one looks like a microwave (just see for yourselves ;-) and one displays
> the sequence of delay tokens ('1' in this case).
>
> Does anybody know how one can control which icon is used?
> (that is the generic Kepler one/microwave, or the original Ptolemy one?)
>
> Looking at the MOML file, I see that the actor code is the same but some
> of the attributes are different.
> But can a user change the icon appearance? (or even a developer?)
>
> thanks
>
> Bertram
>
>
>
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-- 
Christopher Brooks, PMP                       University of California
CHESS Executive Director                      US Mail: 337 Cory Hall
Programmer/Analyst CHESS/Ptolemy/Trust        Berkeley, CA 94720-1774
ph: 510.643.9841 fax:510.642.2718	      (Office: 545Q Cory)
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