1. Tau: PyQT GUI for Tango TANGO Collaboration Meeting April 18, 2008
TANGO Collaboration Meeting 2008, April 17th and 18th 2008, Elettra
Tau: PyQT GUI for Tango
Tau: PyQT GUI for Tango TANGO Collaboration Meeting April 18, 2008
We are growing a lot in python know how
We wanted a GUI platform that takes advantage of this
We did not have time to develop our own GUI editor so instead we extended the existing one
Tiago Coutinho - ALBA

2. Agenda Concept Demo Current applications Requirements Future
TANGO Collaboration Meeting 2008, April 17th and 18th 2008, Elettra
Tau: PyQT GUI for Tango
Agenda
Concept
core
widget
model
Demo
Current applications
Requirements
Future
Conclusions
For those who dared to forget what sardana is
What we had 1.5 years ago
What we have now
The foreseen future
This is the part where I get on my knees and beg for collaboration

3. Concept A framework for both CLI and GUI Tango applications
TANGO Collaboration Meeting 2008, April 17th and 18th 2008, Elettra
Tau: PyQT GUI for Tango
Concept
A framework for both CLI and GUI Tango applications
Built on top of PyTango
Originally known as PyTauico & PyTauiwi
Two major libraries:
core
widget
CORBA
Tango
PyTango
Tau
core
widget

4. Concept (cont.) core the “model” part of a MVC oriented arquitecture
TANGO Collaboration Meeting 2008, April 17th and 18th 2008, Elettra
Tau: PyQT GUI for Tango
Concept (cont.) core
the “model” part of a MVC oriented arquitecture
Completely QT independent
the heart: TangoFactory
old AttributeFactory and DeviceFactory
ensures single object for single identity
model discovery
implements naming validation
polling engine
logging framework
the models:
Hierarquichal
Implement TauModel interface
automatic event subscription ( change & configuration )
must obey the naming convention

5. Concept (cont.) model Database Device Attribute
TANGO Collaboration Meeting 2008, April 17th and 18th 2008, Elettra
Tau: PyQT GUI for Tango
Concept (cont.) model
Database
(tango://)?<host>:<port>
Ex: tango://controls01:10000 or controls01:10000
Device
(<database>/)?(<devicename>|<devicealias>)
Ex: controls01:10000/motor/icepapctrl/1
Attribute
<device>/<attrname>
Ex: motor/icepapctrl/1/velocity

6. Concept (cont.) model Configuration Property Command
TANGO Collaboration Meeting 2008, April 17th and 18th 2008, Elettra
Tau: PyQT GUI for Tango
Concept (cont.) model
Configuration
<attribute>?configuration=<confname>
Ex: motor/icepapctrl/1/velocity?configuration=label
Property
<class>?property=<propname>
<device>?property=<propname>
<attribute>?property=<propname>
Ex: motor/icepapctrl/1?property=channel_id
Command
<device>?command=<cmdname>
Ex: motor/icepapctrl/1?command=DefinePosition

7. Concept (cont.) widget built on top of tau.core and PyQt
TANGO Collaboration Meeting 2008, April 17th and 18th 2008, Elettra
Tau: PyQT GUI for Tango
Concept (cont.) widget
built on top of tau.core and PyQt
tango widget behavior rules:
colors on state and/or quality, writability on attribute type, etc
look & feel
exception handling
hierarquical widgets that match model hierarchy
automatic event registration (CHANGE & ATTR_CONF)
QT Designer ‘friendly’
Basic widgets are done
Easy to write your own custom widgets.
python widgetgen.py <classname> <superclass> <outputfile> [<qtfile>]

8. TANGO Collaboration Meeting 2008, April 17th and 18th 2008, Elettra
Tau: PyQT GUI for Tango

9. TANGO Collaboration Meeting 2008, April 17th and 18th 2008, Elettra
Tau: PyQT GUI for Tango

10. TANGO Collaboration Meeting 2008, April 17th and 18th 2008, Elettra
Tau: PyQT GUI for Tango

11. Requirements Core Widget Python 2.4 PyTango 3.0.4* Qt & PyQT 4.2
TANGO Collaboration Meeting 2008, April 17th and 18th 2008, Elettra
Tau: PyQT GUI for Tango
Requirements
Core
Python 2.4
PyTango 3.0.4*
Widget
Qt & PyQT 4.2
4.3 if you want synoptics
Qwt & PyQwt 5.0.1
If you want plotting widgets
numpy
*It’s not out yet!

12. Future core: widgets: test framework Developers manual
TANGO Collaboration Meeting 2008, April 17th and 18th 2008, Elettra
Tau: PyQT GUI for Tango
Future
core:
missing objects: command, property
widgets:
missing basic widgets: list, combo, spinner, table
migration of non basic widgets: Image, OpenGL widgets
Complete set of JDraw synoptics features
test framework
Developers manual
Tango idependency
Part of a larger plan
tango://motor/ctrl/slit to spec://slit
Dam! maybe we will have to rename Tau. Again!

13. Conclusions Users (developers) are happy They are developing GUIs:
TANGO Collaboration Meeting 2008, April 17th and 18th 2008, Elettra
Tau: PyQT GUI for Tango
Conclusions
Users (developers) are happy
They are developing GUIs:
Rich
Small development effort
Good logging support
Most of the time is spent in QT designer and JDraw
Still a lot of work to be done to reach an ATK level of maturity and stability

14. TANGO Collaboration Meeting 2008, April 17th and 18th 2008, Elettra
Tau: PyQT GUI for Tango
Questions ? ? ? ? ? ?