I’m fooling around with wxPython, 1’st time – and have a question…
I’ve used Glade to set up (draw) a GUI as I want it. I’m now in a
phase of adding functionality.
Basically the program should read the win-log files and quickly list
when I have logged in and out the last weeks (months), so I can get
easily around time registration at work. All the log file reading is
handled by a sub-program “nTidCore”, that is not part of this
question.
My problem right now is essentially a question of timing in drawing
the GUI. The GUI is good looking as it is, but I need to call a sub-
routine “FillText” to populate various fields. This subroutine has to
read through all the logs, and do potentially take like 10 seconds. I
would like the GUI to get fully drawn to the screen, before calling
the sub routine, so that the user can look at a nice GUI, maybe saying
“Please wait a moment”, while it reads through.
Where, in the code, do I put the call that populates my variables, so
that the GUI will draw first, before this time consuming call?
I include my code, in case it can help you answer my question.
Thanks in advance… Martin
#!/usr/bin/env python
# -*- coding: iso-8859-15 -*-
import wx
import nTidCore
class nTidGUI(wx.Frame):
def __init__(self, *args, **kwds):
# begin wxGlade: nTidGUI.__init__
kwds["style"] = wx.DEFAULT_FRAME_STYLE
wx.Frame.__init__(self, *args, **kwds)
self.panel_Main = wx.Panel(self, -1)
# Menu Bar
self.frame_Main_menubar = wx.MenuBar()
wxglade_tmp_menu = wx.Menu()
itmExit = wxglade_tmp_menu.Append(wx.ID_EXIT, "Quit", "Exit
the application...", wx.ITEM_NORMAL)
self.frame_Main_menubar.Append(wxglade_tmp_menu, "File")
wxglade_tmp_menu = wx.Menu()
itmAbout = wxglade_tmp_menu.Append(wx.ID_ABOUT, "About",
"About the application...", wx.ITEM_NORMAL)
self.frame_Main_menubar.Append(wxglade_tmp_menu, "Help")
self.SetMenuBar(self.frame_Main_menubar)
# Menu Bar end
self.frame_Main_statusbar = self.CreateStatusBar(2, 0)
self.label_User = wx.StaticText(self.panel_Main, -1, "User")
self.label_Mode = wx.StaticText(self.panel_Main, -1, "Mode")
self.combo_box_User = wx.ComboBox(self.panel_Main, -1,
choices=nTidCore.ListUsers(), style=wx.CB_DROPDOWN)
self.combo_box_Mode = wx.ComboBox(self.panel_Main, -1,
choices=nTidCore.ListModes(), style=wx.CB_DROPDOWN)
self.button_DefUser = wx.Button(self.panel_Main, -1,
"Default")
self.button_DefMode = wx.Button(self.panel_Main, -1,
"Default")
self.radio_box_Time = wx.RadioBox(self.panel_Main, -1, "Time
interval", choices=["This week", "Last week", "This week + last week",
"This month", "Last month", "Everything ..."], majorDimension=3,
style=wx.RA_SPECIFY_ROWS)
self.text_ctrl_Output = wx.TextCtrl(self.panel_Main, -1, "",
style=wx.TE_MULTILINE)
self.button_Quit = wx.Button(self.panel_Main, -1, "Quit")
self.__set_properties()
self.__do_layout()
# end wxGlade
# Bindings
self.Bind(wx.EVT_MENU, self.OnAbout, itmAbout)
self.Bind(wx.EVT_MENU, self.OnExit, itmExit)
self.Bind(wx.EVT_BUTTON, self.OnExit, self.button_Quit)
# Some events on ComboBox changes and DefaultKey press ...
def __set_properties(self):
# begin wxGlade: nTidGUI.__set_properties
self.SetTitle("nTid")
self.frame_Main_statusbar.SetStatusWidths([-1, 0])
# statusbar fields
frame_Main_statusbar_fields = ["mTid, In No time ...",
"Reading information from computers log file(s)..."]
for i in range(len(frame_Main_statusbar_fields)):
self.frame_Main_statusbar.SetStatusText(frame_Main_statusbar_fields[i],
i)
self.radio_box_Time.SetSelection(2)
self.text_ctrl_Output.SetMinSize((400, 256))
self.button_Quit.SetToolTipString("Press here when you are
done...")
# end wxGlade
def __do_layout(self):
# begin wxGlade: nTidGUI.__do_layout
sizer_Main = wx.BoxSizer(wx.HORIZONTAL)
sizer_MajorControls = wx.BoxSizer(wx.VERTICAL)
sizer_Controls = wx.BoxSizer(wx.VERTICAL)
sizer_Selectors = wx.BoxSizer(wx.HORIZONTAL)
sizer_2 = wx.BoxSizer(wx.VERTICAL)
sizer_1 = wx.BoxSizer(wx.VERTICAL)
sizer_Lables = wx.BoxSizer(wx.VERTICAL)
sizer_Lables.Add(self.label_User, 1, wx.ALL|
wx.ALIGN_CENTER_VERTICAL, 6)
sizer_Lables.Add(self.label_Mode, 1, wx.ALL|
wx.ALIGN_CENTER_VERTICAL, 6)
sizer_Selectors.Add(sizer_Lables, 0, wx.EXPAND, 0)
sizer_1.Add(self.combo_box_User, 1, wx.ALL|wx.EXPAND, 4)
sizer_1.Add(self.combo_box_Mode, 1, wx.ALL|wx.EXPAND, 4)
sizer_Selectors.Add(sizer_1, 1, wx.EXPAND, 0)
sizer_2.Add(self.button_DefUser, 0, wx.ALL, 4)
sizer_2.Add(self.button_DefMode, 0, wx.ALL, 4)
sizer_Selectors.Add(sizer_2, 0, wx.EXPAND, 0)
sizer_Controls.Add(sizer_Selectors, 0, wx.EXPAND, 0)
sizer_Controls.Add(self.radio_box_Time, 0, wx.ALL|wx.EXPAND,
4)
sizer_MajorControls.Add(sizer_Controls, 0, wx.EXPAND, 0)
sizer_MajorControls.Add(self.text_ctrl_Output, 1, wx.ALL|
wx.EXPAND, 4)
sizer_MajorControls.Add(self.button_Quit, 0, wx.ALL|
wx.ALIGN_CENTER_HORIZONTAL, 4)
self.panel_Main.SetSizer(sizer_MajorControls)
sizer_Main.Add(self.panel_Main, 1, wx.EXPAND, 0)
self.SetSizer(sizer_Main)
sizer_Main.Fit(self)
self.Layout()
# end wxGlade
def FillText(self):
self.text_ctrl_Output.Clear()
lstDefault = nTidCore.ReadLog("winXPlog")[1]
for line in lstDefault:
self.text_ctrl_Output.AppendText("\n"+str(line))
def OnAbout(self,e):
# A message dialog box with an OK button. wx.OK is a standard
ID in wxWidgets.
dlg = wx.MessageDialog( self, "A small application", "About
nTid", wx.OK)
dlg.ShowModal() # Show it
dlg.Destroy() # finally destroy it when finished.
def OnExit(self,e):
self.Close(True) # Close the frame.
# end of class nTidGUI
if __name__ == "__main__":
app = wx.PySimpleApp(0)
wx.InitAllImageHandlers()
frame_Main = nTidGUI(None, -1, "")
app.SetTopWindow(frame_Main)
frame_Main.Show()
app.MainLoop()
Martin
Martin