I am having trouble trying to port a pygtk/python2.6/linux-fedora-14
application to use pygobject.
My first try was to convert using pygi-convert.sh, and when I ran that
converted .py, I got
File "/home/lumby/pythonapps/togglegobj_from_convert.py", line 17, in
<module>
pyGtk.require('2.0')
NameError: name 'pyGtk' is not defined
The converter had converted the line
pygtk.require('2.0')
into the
pyGtk.require('2.0')
I don't know the converter would leave calls to anything named pygtk if the
objective is to
remove all reference to pygtk. Anyway, I commented that line out and then I
got
File "/home/lumby/pythonapps/togglegobj_from_convert_plus_chg1.py", line 89,
in <module>
instance = ToggleBut()
File "/home/lumby/pythonapps/togglegobj_from_convert_plus_chg1.py", line 35,
in __init__
self.vbox = Gtk.VBox(False, 85)
TypeError: GObject.__init__() takes exactly 0 arguments (2 given)
Now I am completely baffled. The TypeError error message displays line 27
which reads
gobject.GObject.__init__(self)
but the previous line in the traceback refers to line 35, the one instantiating
self.vbox.
I've attached the original and converted files at the end.
I then turned to the examples provided by pygobject and found one that includes
gtk functions:
cairo-demo.py
so I ran that and I got
File "/usr/share/doc/pygobject2-2.21.5/examples/cairo-demo.py", line 81, in
expose
ctx = Gdk.cairo_create(da.window)
File "/usr/lib/python2.7/site-packages/gtk-2.0/gi/types.py", line 40, in
function
return info.invoke(*args)
TypeError: argument 0: Must be Gdk.Drawable, not NoneType
Traceback (most recent call last):
File "/usr/share/doc/pygobject2-2.21.5/examples/cairo-demo.py", line 81, in
expose
ctx = Gdk.cairo_create(da.window)
File "/usr/lib/python2.7/site-packages/gtk-2.0/gi/types.py", line 40, in
function
return info.invoke(*args)
TypeError: argument 0: Must be Gdk.Drawable, not NoneType
Traceback (most recent call last):
File "/usr/share/doc/pygobject2-2.21.5/examples/cairo-demo.py", line 81, in
expose
ctx = Gdk.cairo_create(da.window)
File "/usr/lib/python2.7/site-packages/gtk-2.0/gi/types.py", line 40, in
function
return info.invoke(*args)
TypeError: argument 0: Must be Gdk.Drawable, not NoneType
Traceback (most recent call last):
File "/usr/share/doc/pygobject2-2.21.5/examples/cairo-demo.py", line 81, in
expose
ctx = Gdk.cairo_create(da.window)
File "/usr/lib/python2.7/site-packages/gtk-2.0/gi/types.py", line 40, in
function
return info.invoke(*args)
TypeError: argument 0: Must be Gdk.Drawable, not NoneType
Traceback (most recent call last):
File "/usr/share/doc/pygobject2-2.21.5/examples/cairo-demo.py", line 81, in
expose
ctx = Gdk.cairo_create(da.window)
File "/usr/lib/python2.7/site-packages/gtk-2.0/gi/types.py", line 40, in
function
return info.invoke(*args)
TypeError: argument 0: Must be Gdk.Drawable, not NoneType
Traceback (most recent call last):
File "/usr/share/doc/pygobject2-2.21.5/examples/cairo-demo.py", line 81, in
expose
ctx = Gdk.cairo_create(da.window)
File "/usr/lib/python2.7/site-packages/gtk-2.0/gi/types.py", line 40, in
function
return info.invoke(*args)
TypeError: argument 0: Must be Gdk.Drawable, not NoneType
Traceback (most recent call last):
File "/usr/share/doc/pygobject2-2.21.5/examples/cairo-demo.py", line 81, in
expose
ctx = Gdk.cairo_create(da.window)
File "/usr/lib/python2.7/site-packages/gtk-2.0/gi/types.py", line 40, in
function
return info.invoke(*args)
TypeError: argument 0: Must be Gdk.Drawable, not NoneType
Traceback (most recent call last):
File "/usr/share/doc/pygobject2-2.21.5/examples/cairo-demo.py", line 81, in
expose
ctx = Gdk.cairo_create(da.window)
File "/usr/lib/python2.7/site-packages/gtk-2.0/gi/types.py", line 40, in
function
return info.invoke(*args)
TypeError: argument 0: Must be Gdk.Drawable, not NoneType
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/gtk-2.0/gi/types.py", line 40, in
function
return info.invoke(*args)
TypeError: main_quit() takes exactly 0 argument(s) (1 given)
At this point I am not confident I can get this working. Can anyone help me?
I am looking for an example of a working python app that uses pygobject to
perform
gtk functions. And/Or some definitive rules on what a python skeleton for this
looks like.
If the answer is along the lines of
"the converter, examples and doc are a bit out of date, they will be updated"
then that's fine, if someone can state that.
Cheers John Lumby
----------------------------------------------------------------
some package versions (up to date Fedora 14 )
python-devel-2.7-8.fc14.1.i686
dbus-python-0.83.0-7.fc14.i686
python-libs-2.7-8.fc14.1.i686
pygobject2-devel-2.21.5-3.fc14.i686
gobject-introspection-devel-0.9.3-1.fc14.i686
pygtk2-devel-2.17.0-7.fc14.i686
gobject-introspection-0.9.3-1.fc14.i686
python-2.7-8.fc14.1.i686
pygobject2-2.21.5-3.fc14.i686
pygtk2-2.17.0-7.fc14.i686
----------------------------------------------------------------------
working pygtk file ( I don't claim it's good code but it works)
#!/usr/bin/env python
""" Toggle Button
GtkToggleButton provides an on/off mechanism.
The user can control which state should be active
by clicking the empty area or by dragging the handle.
"""
import sys
import os.path
# pygtklibdir = os.path.join("/usr/gtk3/lib", "pygtk", "2.0")
# sys.path.insert(0, pygtklibdir)
import string
import re
import pygtk
pygtk.require('2.0')
# pygtk.require('3.0')
import gobject
import gtk
# import pango
class ToggleBut(gtk.Window):
def __init__(self, parent=None):
gtk.Window.__init__(self)
self.connect('delete-event', self._on_delete_event)
self.connect("destroy", self.destroy)
gtk.Window.set_border_width(self,10)
self.vbox = gtk.VBox(False, 85)
self.add(self.vbox)
self.vbox.set_border_width(8)
self.vbox.show()
self.toggle_but = gtk.ToggleButton(label="Toggle Me")
self.vbox.pack_start(self.toggle_but, True, True, 0)
self.light_image = gtk.image_new_from_file ("light_on.png")
self.vbox.pack_start(self.light_image, False, False, 0)
self.toggle_but.set_active(True)
self.toggle_but.connect('notify::active', self.turn_light_on_off ,
self.light_image)
status = gtk.Statusbar()
self.vbox.pack_end(status, expand=False)
status.show()
self.statusbar = status
self.show_all()
def turn_light_on_off(self, paramspec , maybe , this_light_image):
# extract active state of the switch and set the lightbulb image accordingly
on_off = self.toggle_but.get_active()
this_light_image.set_sensitive(on_off)
def main(self):
self.show()
gtk.main()
def delete_event(self, widget, event, data=None):
# If you return FALSE in the "delete_event" signal handler,
# GTK will emit the "destroy" signal. Returning TRUE means
# you don't want the window to be destroyed.
# This is useful for popping up 'are you sure you want to quit?'
# type dialogs.
print "delete event occurred"
# Change FALSE to TRUE and the main window will not be destroyed
# with a "delete_event".
return False
def _on_delete_event(self, window, event):
self.quit()
def destroy(self, widget, data=None):
gtk.main_quit()
def quit(self):
gtk.main_quit()
if __name__ == '__main__':
instance = ToggleBut()
instance.main()
----------------------------------------------------------------
file as converted by converter
#!/usr/bin/env python
""" Toggle Button
GtkToggleButton provides an on/off mechanism.
The user can control which state should be active
by clicking the empty area or by dragging the handle.
"""
import sys
import os.path
# pygtklibdir = os.path.join("/usr/gtk3/lib", "pygtk", "2.0")
# sys.path.insert(0, pygtklibdir)
import string
import re
import pygtk
pyGtk.require('2.0')
# pyGtk.require('3.0')
import gobject
from gi.repository import Gtk
# from gi.repository import Pango
class ToggleBut(Gtk.Window):
def __init__(self, parent=None):
gobject.GObject.__init__(self)
self.connect('delete-event', self._on_delete_event)
self.connect("destroy", self.destroy)
Gtk.Window.set_border_width(self,10)
self.vbox = Gtk.VBox(False, 85)
self.add(self.vbox)
self.vbox.set_border_width(8)
self.vbox.show()
self.toggle_but = Gtk.ToggleButton(label="Toggle Me")
self.vbox.pack_start(self.toggle_but, True, True, 0)
self.light_image = Gtk.image_new_from_file ("light_on.png")
self.vbox.pack_start(self.light_image, False, False, 0)
self.toggle_but.set_active(True)
self.toggle_but.connect('notify::active', self.turn_light_on_off ,
self.light_image)
status = Gtk.Statusbar()
self.vbox.pack_end(status, expand=False)
status.show()
self.statusbar = status
self.show_all()
def turn_light_on_off(self, paramspec , maybe , this_light_image):
# extract active state of the switch and set the lightbulb image accordingly
on_off = self.toggle_but.get_active()
this_light_image.set_sensitive(on_off)
def main(self):
self.show()
Gtk.main()
def delete_event(self, widget, event, data=None):
# If you return FALSE in the "delete_event" signal handler,
# GTK will emit the "destroy" signal. Returning TRUE means
# you don't want the window to be destroyed.
# This is useful for popping up 'are you sure you want to quit?'
# type dialogs.
print "delete event occurred"
# Change FALSE to TRUE and the main window will not be destroyed
# with a "delete_event".
return False
def _on_delete_event(self, window, event):
self.quit()
def destroy(self, widget, data=None):
Gtk.main_quit()
def quit(self):
Gtk.main_quit()
if __name__ == '__main__':
instance = ToggleBut()
instance.main()
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