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.. currentmodule:: taurus.qt.qtgui
.. _taurus-widget-tutorial:
======================
taurus widget tutorial
======================
.. todo::
Update this page to Taurus. In the meanwhile, you can check the :ref:`examples`
..
**UNDER CONSTRUCTION: OUT OF DATE**
The widget package is a PyQt_ based library of widgets designed to represent
Tango_ data.
The widget library provides not only basic widgets like labels, text fields and
combo boxes, but also containers like frames, group boxes or graphics and
synoptics.
.. _TaurusLabel-tutorial:
TaurusLabel tutorial
----------------------
The :class:`TaurusLabel` is a taurus widget designed to display the read value
of an attribute.
.. figure:: /_static/label01.png
:align: center
Simple display value
~~~~~~~~~~~~~~~~~~~~
The simplest example of :class:`TauValueLabel`
.. figure:: /_static/label01.png
:align: center
code::
import sys
from PyQt4 import Qt
import tau.widget
app = Qt.QApplication(sys.argv)
w = tau.widget.TauValueLabel()
w.setModel('sys/tautest/1/position')
panel.setVisible(True)
sys.exit(app.exec_())
Hint:
1. Try to execute the code above and place the mouse over the widget. After
a couple of seconds an automatically generated tooltip will show up.
2. Try to execute the code above and, without closing the tau application,
change the format of the position attribute in the sys/tautest/1 from 6.2f
to 8.2f (using Jive, for example). Will will notice that the displayed value
will change immediately (tango event system must be online in order for
this to work!).
Using parent model
~~~~~~~~~~~~~~~~~~
Demonstrates how to use the *showQuality* and *useParentModel* with
:class:`TauValueLabel` being inside another tau container: the :class:`TauWidget`
.. figure:: /_static/label04.png
:align: center
code::
import sys
from PyQt4 import Qt
import tau.widget
app = Qt.QApplication(sys.argv)
panel = tau.widget.TauWidget()
layout = Qt.QVBoxLayout()
panel.setLayout(layout)
panel.setModel('sys/tautest/1')
w1 = tau.widget.TauValueLabel()
w2 = tau.widget.TauValueLabel()
w3 = tau.widget.TauValueLabel()
w1.setUseParentModel(True)
w2.setUseParentModel(True)
w3.setUseParentModel(True)
w1.setModel('/state')
w2.setModel('/position')
w3.setModel('/simulationmode')
w1.setShowQuality(False)
layout.addWidget(w1)
layout.addWidget(w2)
layout.addWidget(w3)
panel.setVisible(True)
sys.exit(app.exec_())
TauStateLabel tutorial
----------------------
The :class:`TauStateLabel` is a tau widget designed to display the state of a
device both with the background color.
.. figure:: /_static/label05.png
:align: center
Because :class:`TauStateLabel` inherits from :class:`TauValueLabel`, all
:class:`TauValueLabel` properties are available.
**model**:
The model for the :class:`TauStateLabel` only accepts state attributes!
**showQualityForeground**:
- *Type*: bool
- *Default value:* True
- *Description*: When set to True, it uses the attribute quality to display
the text foreground color
Simple display state
~~~~~~~~~~~~~~~~~~~~
The simplest example of :class:`TauStateLabel`
.. figure:: /_static/label05.png
:align: center
code::
import sys
from PyQt4 import Qt
import tau.widget
app = Qt.QApplication(sys.argv)
panel = Qt.QWidget()
layout = Qt.QHBoxLayout()
panel.setLayout(layout)
w = tau.widget.TauStateLabel()
w.setModel('sys/tautest/1/state')
layout.addWidget(w)
panel.setVisible(True)
sys.exit(app.exec_())
Array of state display
~~~~~~~~~~~~~~~~~~~~~~
This example shows how to display multiple device states using a small area
of the GUI.
This example assumes there are 8 devices running with names: 'sys/tautest/<1-8>'
.. figure:: /_static/label06.png
:align: center
code::
import sys
from PyQt4 import Qt
import tau.widget
app = Qt.QApplication(sys.argv)
panel = Qt.QWidget()
layout = Qt.QGridLayout()
panel.setLayout(layout)
for y in range(4):
for x in range(2):
w = tau.widget.TauStateLabel()
w.setModel('sys/tautest/%d/state' % ((y+1)+4*x))
w.setShowText(False)
layout.addWidget(w,x,y)
panel.setVisible(True)
sys.exit(app.exec_())
TauConfigLabel tutorial
-----------------------
@TODO
.. _Tango: http://www.tango-controls.org/
.. _PyTango: http://packages.python.org/PyTango/
.. _QTango: http://www.tango-controls.org/download/index_html#qtango3
.. _`PyTango installation steps`: http://packages.python.org/PyTango/start.html#getting-started
.. _Qt: http://qt.nokia.com/products/
.. _PyQt: http://www.riverbankcomputing.co.uk/software/pyqt/
.. _PyQwt: http://pyqwt.sourceforge.net/
.. _IPython: http://ipython.scipy.org/
.. _ATK: http://www.tango-controls.org/Documents/gui/atk/tango-application-toolkit
.. _Qub: http://www.blissgarden.org/projects/qub/
.. _numpy: http://numpy.scipy.org/
.. _SPEC: http://www.certif.com/
.. _EPICS: http://www.aps.anl.gov/epics/
|
