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#!/usr/bin/env python
#
"""
provides two classes:
MotorPanel: a wx panel for an Epics Motor, ala medm Motor row
makes use of these modules
wxlib: extensions of wx.TextCtrl, etc for epics PVs
Motor: Epics Motor class
"""
# Aug 21 2004 M Newville: initial working version.
#
import wx
try:
from wx._core import PyDeadObjectError
except:
PyDeadObjectError = Exception
import six
import epics
from epics.wx.wxlib import PVText, PVFloatCtrl, PVButton, PVComboBox, \
DelayedEpicsCallback, EpicsFunction
from epics.wx.motordetailframe import MotorDetailFrame
from epics.wx.utils import LCEN, RCEN, CEN, LTEXT, RIGHT, pack, add_button
from larch.utils import debugtime
class MotorPanel(wx.Panel):
""" MotorPanel a simple wx windows panel for controlling an Epics Motor
use psize='full' (defaiult) for full capabilities, or
'medium' or 'small' for minimal version
"""
__motor_fields = ('SET', 'disabled', 'LLM', 'HLM', 'LVIO', 'TWV',
'HLS', 'LLS', 'SPMG', 'DESC')
def __init__(self, parent, motor=None, psize='full',
messenger=None, prec=None, **kw):
wx.Panel.__init__(self, parent, style=wx.TAB_TRAVERSAL)
self.parent = parent
if hasattr(messenger, '__call__'):
self.__messenger = messenger
self.format = None
if prec is not None:
self.format = "%%.%if" % prec
self.motor = None
self._size = 'full'
if psize in ('medium', 'small'):
self._size = psize
self.__sizer = wx.BoxSizer(wx.HORIZONTAL)
self.CreatePanel()
if motor is not None:
try:
self.SelectMotor(motor)
except PyDeadObjectError:
pass
@EpicsFunction
def SelectMotor(self, motor):
" set motor to a named motor PV"
if motor is None:
return
dt = debugtime()
epics.poll()
try:
if self.motor is not None:
for i in self.__motor_fields:
self.motor.clear_callback(attr=i)
except PyDeadObjectError:
return
dt.add('clear callbacks')
if isinstance(motor, six.string_types):
self.motor = epics.Motor(motor)
dt.add('create motor (name)')
elif isinstance(motor, epics.Motor):
self.motor = motor
dt.add('create motor (motor)')
self.motor.get_info()
dt.add('get motor info')
if self.format is None:
self.format = "%%.%if" % self.motor.PREC
self.FillPanel()
dt.add('fill panel')
for attr in self.__motor_fields:
self.motor.get_pv(attr).add_callback(self.OnMotorEvent,
wid=self.GetId(),
field=attr)
dt.add('add callbacks %i attrs ' % (len(self.__motor_fields)))
if self._size == 'full':
self.SetTweak(self.format % self.motor.TWV)
# dt.show()
@EpicsFunction
def FillPanelComponents(self):
epics.poll()
try:
if self.motor is None:
return
except PyDeadObjectError:
return
self.drive.SetPV(self.motor.PV('VAL'))
self.rbv.SetPV(self.motor.PV('RBV'))
self.desc.SetPV(self.motor.PV('DESC'))
descpv = self.motor.PV('DESC').get()
self.desc.Wrap(45)
if self._size == 'full':
self.twf.SetPV(self.motor.PV('TWF'))
self.twr.SetPV(self.motor.PV('TWR'))
elif len(descpv) > 20:
font = self.desc.GetFont()
font.PointSize -= 1
self.desc.SetFont(font)
self.info.SetLabel('')
for f in ('SET', 'LVIO', 'SPMG', 'LLS', 'HLS', 'disabled'):
uname = self.motor.PV(f).pvname
wx.CallAfter(self.OnMotorEvent,
pvname=uname, field=f)
def CreatePanel(self):
" build (but do not fill in) panel components"
wdesc, wrbv, winfo, wdrv = 200, 105, 90, 120
if self._size == 'medium':
wdesc, wrbv, winfo, wdrv = 140, 85, 80, 100
elif self._size == 'small':
wdesc, wrbv, winfo, wdrv = 50, 60, 25, 80
self.desc = PVText(self, size=(wdesc, 25), style=LTEXT)
self.desc.SetForegroundColour("Blue")
font = self.desc.GetFont()
font.PointSize -= 1
self.desc.SetFont(font)
self.rbv = PVText(self, size=(wrbv, 25), fg='Blue', style=RCEN)
self.info = wx.StaticText(self, label='',
size=(winfo, 25), style=RCEN)
self.info.SetForegroundColour("Red")
self.drive = PVFloatCtrl(self, size=(wdrv, -1), style = wx.TE_RIGHT)
try:
self.FillPanelComponents()
except PyDeadObjectError:
return
spacer = wx.StaticText(self, label=' ', size=(5, 5), style=RIGHT)
if self._size != 'small':
self.__sizer.AddMany([(spacer, 0, CEN)])
self.__sizer.AddMany([ (self.desc, 1, LCEN),
(self.info, 0, CEN),
(self.rbv, 0, CEN),
(self.drive, 0, CEN)])
if self._size == 'full':
self.twk_list = ['','']
self.__twkbox = wx.ComboBox(self, value='', size=(100, -1),
choices=self.twk_list,
style=wx.CB_DROPDOWN|wx.TE_PROCESS_ENTER)
self.__twkbox.Bind(wx.EVT_COMBOBOX, self.OnTweakBoxComboEvent)
self.__twkbox.Bind(wx.EVT_TEXT_ENTER, self.OnTweakBoxEnterEvent)
self.twr = PVButton(self, label='<', size=(30, 30))
self.twf = PVButton(self, label='>', size=(30, 30))
self.stopbtn = add_button(self, label=' Stop ', action=self.OnStopButton)
self.morebtn = add_button(self, label=' More ', action=self.OnMoreButton)
self.__sizer.AddMany([(self.twr, 0, CEN),
(self.__twkbox, 0, CEN),
(self.twf, 0, CEN),
(self.stopbtn, 0, CEN),
(self.morebtn, 0, CEN)])
self.SetAutoLayout(1)
print("create ", self.motor)
pack(self, self.__sizer)
@EpicsFunction
def FillPanel(self):
" fill in panel components for motor "
try:
if self.motor is None:
return
self.FillPanelComponents()
self.drive.Update()
self.desc.Update()
self.rbv.Update()
if self._size == 'full':
self.twk_list = self.make_step_list()
self.UpdateStepList()
except PyDeadObjectError:
pass
@EpicsFunction
def OnStopButton(self, event=None):
"stop button"
if self.motor is None:
return
curstate = str(self.stopbtn.GetLabel()).lower().strip()
if curstate == 'stop':
self.motor.stop()
epics.poll()
else:
self.motor.SPMG = 3
@EpicsFunction
def OnMoreButton(self, event=None):
"more button"
if self.motor is not None:
MotorDetailFrame(parent=self, motor=self.motor)
@DelayedEpicsCallback
def OnTweakBoxEnterEvent(self, event=None):
val = float(self.__twkbox.GetValue())
wx.CallAfter(self.motor.PV('TWV').put, val)
@DelayedEpicsCallback
def OnTweakBoxComboEvent(self, event=None):
val = float(self.__twkbox.GetValue())
wx.CallAfter(self.motor.PV('TWV').put, val)
@DelayedEpicsCallback
def OnMotorEvent(self, pvname=None, field=None, event=None, **kws):
if pvname is None:
return None
field_val = self.motor.get(field)
field_str = self.motor.get(field, as_string=True)
if field == 'LLM':
self.drive.SetMin(self.motor.LLM)
elif field == 'HLM':
self.drive.SetMax(self.motor.HLM)
elif field in ('LVIO', 'HLS', 'LLS'):
s = 'Limit!'
if field_val == 0:
s = ''
self.info.SetLabel(s)
elif field == 'SET':
label, color = 'Set:','Yellow'
if field_val == 0:
label, color = '','White'
self.info.SetLabel(label)
self.drive.bgcol_valid = color
self.drive.SetBackgroundColour(color)
self.drive.Refresh()
elif field == 'disabled':
label = ('','Disabled')[field_val]
self.info.SetLabel(label)
elif field == 'DESC':
font = self.rbv.GetFont()
if len(field_str) > 20:
font.PointSize -= 1
self.desc.SetFont(font)
elif field == 'TWV' and self._size == 'full':
self.SetTweak(field_str)
elif field == 'SPMG' and self._size == 'full':
label, info, color = 'Stop', '', 'White'
if field_val == 0:
label, info, color = ' Go ', 'Stopped', 'Yellow'
elif field_val == 1:
label, info, color = ' Resume ', 'Paused', 'Yellow'
elif field_val == 2:
label, info, color = ' Go ', 'Move Once', 'Yellow'
self.stopbtn.SetLabel(label)
self.info.SetLabel(info)
self.stopbtn.SetBackgroundColour(color)
self.stopbtn.Refresh()
else:
pass
@EpicsFunction
def SetTweak(self, val):
if not isinstance(val, str):
val = self.format % val
try:
if val not in self.twk_list:
self.UpdateStepList(value=val)
self.__twkbox.SetValue(val)
except PyDeadObjectError:
pass
def make_step_list(self):
""" create initial list of motor steps, based on motor range
and precision"""
if self.motor is None:
return []
return [self.format % i for i in self.motor.make_step_list()]
def UpdateStepList(self, value=None):
"add a value and re-sort the list of Step values"
if value is not None:
self.twk_list.append(value)
x = [float(i) for i in self.twk_list]
x.sort()
self.twk_list = [self.format % i for i in x]
# remake list in TweakBox
self.__twkbox.Clear()
self.__twkbox.AppendItems(self.twk_list)
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