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import wx |
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import sys |
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import epics |
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from epics.wx import EpicsFunction, DelayedEpicsCallback |
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class PVDisplay(wx.Frame): |
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def __init__(self, pvname, parent=None, **kwds): |
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wx.Frame.__init__(self, parent, wx.ID_ANY, '', |
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wx.DefaultPosition, wx.Size(-1,-1),**kwds) |
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self.SetFont(wx.Font(11,wx.SWISS,wx.NORMAL,wx.BOLD,False)) |
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self.pvname = pvname |
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self.SetTitle("%s" % pvname) |
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self.sizer = wx.GridBagSizer(3, 2) |
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panel = wx.Panel(self) |
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name = wx.StaticText(panel, label=pvname, size=(120, -1)) |
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self.val = wx.StaticText(panel, label='unconnected', size=(200, -1)) |
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self.info = wx.StaticText(panel, label='-- ' , size=(400,300)) |
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self.info.SetFont(wx.Font(9,wx.SWISS,wx.NORMAL,wx.BOLD,False)) |
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self.sizer.Add(wx.StaticText(panel, label='PV: ', size=(60, -1)), |
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(0, 0), (1, 1), wx.EXPAND, 1) |
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self.sizer.Add(wx.StaticText(panel, label='Value: ', size=(60, -1)), |
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(1, 0), (1, 1), wx.EXPAND, 1) |
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self.sizer.Add(wx.StaticText(panel, label='Info: ', size=(60, -1)), |
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(2, 0), (1, 1), wx.EXPAND, 1) |
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self.sizer.Add(name, (0, 1), (1, 1), wx.EXPAND, 1) |
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self.sizer.Add(self.val, (1, 1), (1, 1), wx.ALIGN_RIGHT|wx.EXPAND, 1) |
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self.sizer.Add(self.info, (2, 1), (2, 2), wx.ALIGN_LEFT|wx.EXPAND, 1) |
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panel.SetSizer(self.sizer) |
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self.needs_info = None |
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self.timer = wx.Timer(self) |
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self.Bind(wx.EVT_TIMER, self.onTimer, self.timer) |
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self.s1 = wx.BoxSizer(wx.VERTICAL) |
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self.s1.Add(panel, 1, wx.EXPAND, 2) |
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self.s1.Fit(self) |
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self.Refresh() |
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self.connect_pv() |
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@EpicsFunction |
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def connect_pv(self): |
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self.pv = epics.PV(self.pvname, connection_callback=self.onConnect, |
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callback=self.onPV_value) |
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@EpicsFunction |
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def onTimer(self, evt): |
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if self.need_info and self.pv.connected: |
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self.info.SetLabel(self.pv.info) |
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self.timer.Stop() |
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self.needs_info = False |
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@DelayedEpicsCallback |
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def onConnect(self, **kws): |
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self.need_info = True |
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self.timer.Start(25) |
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@DelayedEpicsCallback |
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def onPV_value(self, name=None, char_value=None, **kws): |
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if len(char_value) > 90: |
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char_value = char_value[:90] |
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self.val.SetLabel(' %s' % char_value) |
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self.need_info = True |
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self.timer.Start(25) |
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class NameCtrl(wx.TextCtrl): |
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def __init__(self, panel, value='', action=None, **kws): |
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self.action = action |
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wx.TextCtrl.__init__(self, panel, wx.ID_ANY, value='', |
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style=wx.TE_PROCESS_ENTER, **kws) |
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self.Bind(wx.EVT_CHAR, self.onChar) |
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def onChar(self, event): |
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if event.GetKeyCode() == wx.WXK_RETURN and \ |
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self.action is not None: |
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self.action(wx.TextCtrl.GetValue(self).strip()) |
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event.Skip() |
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class ProbeFrame(wx.Frame): |
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def __init__(self, parent=None, **kwds): |
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wx.Frame.__init__(self, parent, wx.ID_ANY, '', |
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wx.DefaultPosition, wx.Size(-1,-1),**kwds) |
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self.SetTitle("Connect to Epics Records:") |
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self.SetFont(wx.Font(11,wx.SWISS,wx.NORMAL,wx.BOLD,False)) |
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sizer = wx.BoxSizer(wx.HORIZONTAL) |
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panel = wx.Panel(self) |
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label = wx.StaticText(panel, label='PV Name:') |
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self.pvname = NameCtrl(panel, value='', size=(175,-1), |
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action=self.onName) |
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sizer.Add(label, 0, wx.ALIGN_LEFT, 1) |
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sizer.Add(self.pvname, 1, wx.EXPAND, 1) |
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panel.SetSizer(sizer) |
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sizer.Fit(panel) |
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s = wx.BoxSizer(wx.VERTICAL) |
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s.Add(panel) |
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s.Fit(self) |
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self.Refresh() |
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def onName(self, value, wid=None, **kws): |
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PVDisplay(value, parent=self).Show() |
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if __name__ == '__main__': |
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app = wx.App(redirect=False) |
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ProbeFrame().Show() |
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app.MainLoop() |
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