My first wxPython App with Twisted

Hi,
I am creating the first GUI app (wxPython based) using Twisted.
I am facing an issue which I cannot seem to solve/understand due
to lack of trace or anything.

I had a big app written on twisted and now I am creating a login
screen to the app.
The app used to work without any issues. I added the login screen
and the login screen comes up.
But then everything freezes up. I have to force quit the python
application to get anything back. Can anyone help me solve it?

The code is as follows:

import wx
import os
import logging

from twisted.internet import wxreactor
wxreactor.install()
from twisted.internet import reactor #Called only after
wxreactor.install()
from twisted.internet.task import LoopingCall

import clientapp

def opj(path):
""" Convert paths to the platform-specific separator """
st = apply(os.path.join, tuple(path.split('/')))
if path.startswith('/'):
st = '/' + st
return st


class APPApp(wx.App):
def OnInit(self):
self.frame = APPFrame(None, -1, " APP Login", size=(200, 150))
self.panel = APPPanel(self.frame,-1)
#client.run method does the verification etc along with other
items
client = clientapp.setup_app()
call = LoopingCall(client.run)
call.start(.51)
return True


def main():
app = APPApp(0)
reactor.registerWxApp(app)
try:
reactor.run()
except StandardError:
raise


class APPPanel(wx.Panel):
""" APP GUI PANEL

The panel in which the user name and password is typed.
@var ID_LOGIN: Login buttons id. When this button is clicked, the
data
is stored for logging.

"""
ID_LOGIN = wx.NewId()

def __init__(self, parent, id):
self.parent = parent
wx.Panel.__init__(self, parent, id, size=(200,150))
self.quote = wx.StaticText(self, -1, "APP Login",wx.Point(60,
10))
wx.StaticText(self, wx.ID_ANY, "User Name ", wx.Point(20, 33))
wx.StaticText(self, wx.ID_ANY, "Password ", wx.Point(20, 5)
self.usernameBox = wx.TextCtrl(self, wx.ID_ANY, "",
wx.Point(80, 31), wx.Size(100, wx.ID_ANY))
self.usernameBox.SetFocus()
self.passwordBox = wx.TextCtrl(self, wx.ID_ANY, "",
wx.Point(80, 56), wx.Size(100, wx.ID_ANY), style=wx.TE_PASSWORD)
self.button =wx.Button(self, self.ID_LOGIN, "Login", wx.Point
(60, 8)
wx.EVT_BUTTON(parent, self.ID_LOGIN, self.on_login)

def on_login(self, event):
username = self.usernameBox.GetString(0, 12
password = self.passwordBox.GetString(0, 12
if username and password:
self.parent.on_login_click(username, password)


class APPTaskBarIcon(wx.TaskBarIcon):
''' TaskBar Icon

So that the application is always alive on the taskbar.
3 operations are possible, DoubleClick on the taskbar would bring
up the
window, right click will bring up options to restore or exit the
tool.

'''
TBMENU_RESTORE = wx.NewId()
TBMENU_CLOSE = wx.NewId()

def __init__(self, frame):
wx.TaskBarIcon.__init__(self)
self.frame = frame
# Set the image
icon = self.MakeIcon(self.frame.get_image())
self.SetIcon(icon, "APP")
self.imgidx = 1
# bind some events
self.Bind(wx.EVT_TASKBAR_LEFT_DCLICK, self.OnTaskBarActivate)
self.Bind(wx.EVT_MENU, self.OnTaskBarActivate,
id=self.TBMENU_RESTORE)
self.Bind(wx.EVT_MENU, self.OnTaskBarClose,
id=self.TBMENU_CLOSE)

def CreatePopupMenu(self):
""" Right Click Popup Menu

This method is called by the base class when it needs to popup
the menu for the default EVT_RIGHT_DOWN event.

"""
menu = wx.Menu()
menu.Append(self.TBMENU_RESTORE, "Restore Window")
menu.Append(self.TBMENU_CLOSE, "Exit APP")
return menu

def MakeIcon(self, img):
""" Return the generated Icon.

This function is required because various platforms have
different
requirements for the icon size.

"""
if "wxMSW" in wx.PlatformInfo:
img = img.Scale(16, 16)
elif "wxGTK" in wx.PlatformInfo:
img = img.Scale(22, 22)
icon = wx.IconFromBitmap(img.ConvertToBitmap() )
return icon

def OnTaskBarActivate(self, evt):
''' Activation code - say DoubleClick etc. It raises the window
'''
if self.frame.IsIconized():
self.frame.Iconize(False)
if not self.frame.IsShown():
self.frame.Show(True)
self.frame.Raise()

def OnTaskBarClose(self, evt):
''' On right click and close, the frame itself is closed '''
wx.CallAfter(self.frame.Close)


class APPFrame(wx.Frame):
def __init__(self, parent, id, title, size=None):
wx.Frame.__init__(self, parent, id, title,
size=size, pos=wx.Point(400, 300))
icon = self.get_icon()
self.SetIcon(icon)
self.tbicon = APPTaskBarIcon(self)
self.Show(True)
self.Bind(wx.EVT_CLOSE, self.OnCloseWindow)
self.Bind(wx.EVT_ICONIZE, self.OnIconify)

def on_login_click(self, username, password):
self.Hide()

def OnCloseWindow(self, event):
if self.tbicon is not None:
self.tbicon.Destroy()
event.Skip()

def OnIconify(self, event):
self.Hide()

def get_image(self):
img= wx.Image(opj('client.ico'), wx.BITMAP_TYPE_ICO)
return img

def get_icon(self):
img = self.get_image()
icon = wx.IconFromBitmap(img.ConvertToBitmap() )
return icon


if __name__ == '__main__':
main()


--------------
If somebody can help me out, I would be much obliged.

koranthala

On Aug 5, 6:29*am, koranthala <koranth...@gmail.com> wrote:
> Hi,
> * *I am creating the first GUI app (wxPython based) using Twisted.
> * *I am facing an issue which I cannot seem to solve/understand due
> to lack of trace or anything.
>
> * *I had a big app written on twisted and now I am creating a login
> screen to the app.
> * *The app used to work without any issues. I added the login screen
> and the login screen comes up.
> * * But then everything freezes up. I have to force quit the python
> application to get anything back. Can anyone help me solve it?
>
> * *The code is as follows:
>
> import wx
> import os
> import logging
>
> from twisted.internet import wxreactor
> wxreactor.install()
> from twisted.internet import reactor #Called only after
> wxreactor.install()
> from twisted.internet.task import LoopingCall
>
> import clientapp
>
> def opj(path):
> * *""" Convert paths to the platform-specific separator """
> * *st = apply(os.path.join, tuple(path.split('/')))
> * *if path.startswith('/'):
> * * * *st = '/' + st
> * *return st
>
> class APPApp(wx.App):
> * *def OnInit(self):
> * * * *self.frame = APPFrame(None, -1, " APP Login", size=(200, 150))
> * * * *self.panel = APPPanel(self.frame,-1)
> * * * *#client.run method does the verification etc along with other
> items
> * * * *client = clientapp.setup_app()
> * * * *call = LoopingCall(client.run)
> * * * *call.start(.51)
> * * * *return True
>
> def main():
> * *app = APPApp(0)
> * *reactor.registerWxApp(app)
> * *try:
> * * * *reactor.run()
> * *except StandardError:
> * * * *raise
>
> class APPPanel(wx.Panel):
> * *""" APP GUI PANEL
>
> * *The panel in which the user name and password is typed.
> * *@var ID_LOGIN: Login buttons id. When this button is clicked, the
> data
> * * * *is stored for logging.
>
> * *"""
> * *ID_LOGIN = wx.NewId()
>
> * *def __init__(self, parent, id):
> * * * *self.parent = parent
> * * * *wx.Panel.__init__(self, parent, id, size=(200,150))
> * * * *self.quote = wx.StaticText(self, -1, "APP Login",wx.Point(60,
> 10))
> * * * *wx.StaticText(self, wx.ID_ANY, "User Name ", wx.Point(20, 33))
> * * * *wx.StaticText(self, wx.ID_ANY, "Password ", wx.Point(20, 5)
> * * * *self.usernameBox = wx.TextCtrl(self, wx.ID_ANY, "",
> wx.Point(80, 31), wx.Size(100, wx.ID_ANY))
> * * * *self.usernameBox.SetFocus()
> * * * *self.passwordBox = wx.TextCtrl(self, wx.ID_ANY, "",
> wx.Point(80, 56), wx.Size(100, wx.ID_ANY), style=wx.TE_PASSWORD)
> * * * *self.button =wx.Button(self, self.ID_LOGIN, "Login", wx.Point
> (60, 8)
> * * * *wx.EVT_BUTTON(parent, self.ID_LOGIN, self.on_login)
>
> * *def on_login(self, event):
> * * * *username = self.usernameBox.GetString(0, 12
> * * * *password = self.passwordBox.GetString(0, 12
> * * * *if username and password:
> * * * * * *self.parent.on_login_click(username, password)
>
> class APPTaskBarIcon(wx.TaskBarIcon):
> * *''' TaskBar Icon
>
> * *So that the application is always alive on the taskbar.
> * *3 operations are possible, DoubleClick on the taskbar would bring
> up the
> * *window, right click will bring up options to restore or exit the
> tool.
>
> * *'''
> * *TBMENU_RESTORE = wx.NewId()
> * *TBMENU_CLOSE * = wx.NewId()
>
> * *def __init__(self, frame):
> * * * *wx.TaskBarIcon.__init__(self)
> * * * *self.frame = frame
> * * * *# Set the image
> * * * *icon = self.MakeIcon(self.frame.get_image())
> * * * *self.SetIcon(icon, "APP")
> * * * *self.imgidx = 1
> * * * *# bind some events
> * * * *self.Bind(wx.EVT_TASKBAR_LEFT_DCLICK, self.OnTaskBarActivate)
> * * * *self.Bind(wx.EVT_MENU, self.OnTaskBarActivate,
> id=self.TBMENU_RESTORE)
> * * * *self.Bind(wx.EVT_MENU, self.OnTaskBarClose,
> id=self.TBMENU_CLOSE)
>
> * *def CreatePopupMenu(self):
> * * * *""" Right Click Popup Menu
>
> * * * *This method is called by the base class when it needs to popup
> * * * *the menu for the default EVT_RIGHT_DOWN event.
>
> * * * *"""
> * * * *menu = wx.Menu()
> * * * *menu.Append(self.TBMENU_RESTORE, "Restore Window")
> * * * *menu.Append(self.TBMENU_CLOSE, "Exit APP")
> * * * *return menu
>
> * *def MakeIcon(self, img):
> * * * *""" Return the generated Icon.
>
> * * * *This function is required because various platforms have
> different
> * * * *requirements for the icon size.
>
> * * * *"""
> * * * *if "wxMSW" in wx.PlatformInfo:
> * * * * * *img = img.Scale(16, 16)
> * * * *elif "wxGTK" in wx.PlatformInfo:
> * * * * * *img = img.Scale(22, 22)
> * * * *icon = wx.IconFromBitmap(img.ConvertToBitmap() )
> * * * *return icon
>
> * *def OnTaskBarActivate(self, evt):
> * * * *''' Activation code - say DoubleClick etc. It raises the window
> '''
> * * * *if self.frame.IsIconized():
> * * * * * *self.frame.Iconize(False)
> * * * *if not self.frame.IsShown():
> * * * * * *self.frame.Show(True)
> * * * *self.frame.Raise()
>
> * *def OnTaskBarClose(self, evt):
> * * * *''' On right click and close, the frame itself is closed '''
> * * * *wx.CallAfter(self.frame.Close)
>
> class APPFrame(wx.Frame):
> * *def __init__(self, parent, id, title, size=None):
> * * * *wx.Frame.__init__(self, parent, id, title,
> * * * * * * * * * * * * *size=size, pos=wx.Point(400, 300))
> * * * *icon = self.get_icon()
> * * * *self.SetIcon(icon)
> * * * *self.tbicon = APPTaskBarIcon(self)
> * * * *self.Show(True)
> * * * *self.Bind(wx.EVT_CLOSE, self.OnCloseWindow)
> * * * *self.Bind(wx.EVT_ICONIZE, self.OnIconify)
>
> * *def on_login_click(self, username, password):
> * * * *self.Hide()
>
> * *def OnCloseWindow(self, event):
> * * * *if self.tbicon is not None:
> * * * * * *self.tbicon.Destroy()
> * * * *event.Skip()
>
> * *def OnIconify(self, event):
> * * * *self.Hide()
>
> * *def get_image(self):
> * * * *img= wx.Image(opj('client.ico'), wx.BITMAP_TYPE_ICO)
> * * * *return img
>
> * *def get_icon(self):
> * * * *img = self.get_image()
> * * * *icon = wx.IconFromBitmap(img.ConvertToBitmap() )
> * * * *return icon
>
> if __name__ == '__main__':
> * *main()
>
> --------------
> If somebody can help me out, I would be much obliged.

Please disregard this mail. I will post a barebones version separately.

koranthala