Re: [pygtk] Problem with gtk.Window().maximize()

[Angel Guzman Maeso]

2013/1/19 Ajay Garg ajaygargn...@gmail.com

 Hi all.

 If a gtk.Window has been maximized, it seems that the resize() method
 doesn't take effect thereafter.
 I will illustrate with the following code snippets ::



 a)
 ###
 import gtk
 import gobject

 win = gtk.Window()
 win.show()

 win.resize(683, 346)

 gobject.MainLoop().run()
 ###


 When the above snippet is run, the window is resized as expected.






 b)
 ###
 import gtk
 import gobject

 win = gtk.Window()
 win.show()

 win.maximize()   ### Culprit line :-(

 win.resize(683, 346)

 gobject.MainLoop().run()
 ###



 Here, once the window is maximized, the resize() stops working :-(




 Is it expected? Is it a bug?
 Is there anyway I can get the window to resize, AFTER calling
 window.maximize() ?


 Will be grateful for any pointers :)


 Regards,
 Ajay

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Hi Ajay,

I am not a expert, but I think that when you specify .maximize, any default
window sizes that have been set will be overridden. Then you leave the
window to the composite window manager (compiz, metacity, unity, etc) to
handle maximize/unmaximize/resize, etc.

When using .unmaximize(), the window will shrink to the size of the child
content or to any size specified.

You can get some useful trace info with window-state-event
or configure-event event. Also could be useful ensure the resizable status
with .set_resizable(True) and I recomend migrate your code to PyGObject
(For GTK 3+) https://live.gnome.org/PyGObject

So I think that you cannot maximize and after resize without user action
from composite window manager. Maybe someone with more knowledge than me
could give you more info.

Regards
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Re: [pygtk] PyObject fails with Gst on signal sync-message::element

[Angel Guzman Maeso]

2011/11/2 Tomeu Vizoso to...@sugarlabs.org

 OYou don't need gst-python any more, that's the point of the move to
 introspection: https://live.gnome.org/GObjectIntrospection/Architecture

 For building gstreamer master from git: http://gstreamer.freedesktop.org/

 Good luck,

 Tomeu


Hi again,

This is my current progress at the moment.

I try to compile gstreamer 0.11.1 on Ubuntu Oneiric 11.10 with this:

sudo apt-get install bison flex
wget http://gstreamer.freedesktop.org/src/gstreamer/gstreamer-0.11.1.tar.gz
tar -xvzf gstreamer-*.tar.gz
cd gstreamer-*
./configure
sudo make
sudo make install

All succesfully. This install the binaries under /usr/local/

But apparently, the first problem comes, I need compile gir files for
create the typelib files.

I see on the package gir1.2-gstreamer-0.10 for Ubuntu, that I need at least
all this typelib files:

/usr/lib/girepository-1.0/Gst-0.10.typelib
/usr/lib/girepository-1.0/GstBase-0.10.typelib
/usr/lib/girepository-1.0/GstCheck-0.10.typelib
/usr/lib/girepository-1.0/GstController-0.10.typelib
/usr/lib/girepository-1.0/GstNet-0.10.typelib

http://packages.ubuntu.com/es/precise/gir1.2-gstreamer-0.10
http://packages.ubuntu.com/es/precise/i386/gir1.2-gstreamer-0.10/filelist

So I don't know until now where get that .gir files or how to generate the
gir files for 0.11.

Apparently gir files is like an XML format with the migration spec.

Then I should compile the files with something like for generate the
typelib files:

/opt/pygi/bin/g-ir-compiler --includedir=. --includedir=.
 /usr/share/gir-1.0/Gst-0.10.gir -o
/usr/lib/girepository-1.0/Gst-0.10.typelib

http://manpages.ubuntu.com/manpages/natty/man1/g-ir-compiler.1.html

I don't know where find documentation for this process, just I google for
known words and found things like this for extract knowledge:
http://pastebin.com/jUP0aLEH

The info is very spread and nobody writes a documented procedure for this.

I found on http://live.gnome.org/GnomeGoals/AddGObjectIntrospectionSupportthat
Gstreamer have support done for instrospection, but no reference
that how to do it.

So I keep google for hours and I found this, that it show me a little how
to generate the .gir files with g-ir-scanner:

http://wksprivate.appspot.com/pastebin/detail-js/9060/

/usr/local/bin/g-ir-scanner -v --namespace Gst --nsversion=0.10 \
283.
--add-include-path=. --add-include-path=. \
284.
--include=GObject-2.0 \
285.
--include=GModule-2.0 \
286.
--include=libxml2-2.0 \
287.
--library=gstbase-0.10 \
288.
--libtool=/bin/sh ../libtool \
289.
--pkg gobject-2.0 \
290.
--pkg gstreamer-0.10 \
291.
--pkg gstreamer-base-0.10 \
292.
--output Gst-0.10.gir \
293.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstbin.h \
294.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstbuffer.h \
295.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstbus.h \
296.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstcaps.h \
297.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstchildproxy.h \
298.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstclock.h \
299.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstcompat.h \
300.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstconfig.h \
301.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstdebugutils.h \
302.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstelementfactory.h \
303.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstelement.h \
304.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstenumtypes.h \
305.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gsterror.h \
306.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstevent.h \
307.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstfilter.h \
308.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstformat.h \
309.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstghostpad.h \
310.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gst.h \
311.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstindexfactory.h \
312.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstindex.h \
313.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstinfo.h \
314.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstinterface.h \
315.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstiterator.h \
316.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstmacros.h \
317.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstmarshal.h \
318.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstmessage.h \
319.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstminiobject.h \
320.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstobject.h \
321.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstpad.h \
322.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstpadtemplate.h \
323.
`pkg-config --variable=includedir gstreamer-0.10`/gst/gstparamspecs.h \
324.
`pkg-config --variable=includedir 

Re: [pygtk] PyObject fails with Gst on signal sync-message::element

[Angel Guzman Maeso]

2011/10/29 Pietro Battiston m...@pietrobattiston.it

 Il giorno sab, 29/10/2011 alle 10.57 +0200, Angel Guzman Maeso ha
 scritto:
  Please, anybody can help me? I search on pygstreamer and GIR files
  code and changelog and there is not reference for changes related with
  syn-message::element.

 Nothing to do with the This signal will not be emitted by default, you
 have to set up gst_bus_sync_signal_handler() as a sync handler if you
 want this signal to be emitted when a message is posted on the bus, like
 this: I read in the documentation?
 (just a guess, I'm not an expert about gstreamer)

 Pietro


Hi Pietro,

Thanks for your response.

Your response seems to be right, but it doesn't work on GTK3 with PyGi

This line should enable the signal for the emission.

bus.enable_sync_message_emission()

The Gnome Bug #631901 shows that there is a problem with the signals
emitted:

https://bugzilla.gnome.org/show_bug.cgi?id=631901

message::eos, message::error and sync-message::element are not emitted,
just message and sync-message without members.

Maybe it is a problem with MiniObject support through GI.

http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMessage.html
http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gstreamer/html/gstreamer-GstMiniObject.html#GstMiniObject

Using bus.connect('message', self.on_message)

and
def on_message(self, bus, message):
print('message: {!r}'.format(message))

it show this traceback on close:

Traceback (most recent call last):
  File test.py, line 62, in on_message
print('message: {!r}'.format(message))
TypeError: unknown type GstMessage

Also I found:

gst_bus_create_watch, since GSource aren't wrapped in pygtk
gst_bus_sync_signal_handler and gst_bus_async_signal_func since
these functions are used by the default bus handler anyway.

http://ftp.tuwien.ac.at/hci/freedesktop.org/gstreamer/gst-python/gst/gstbus.override,v
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Re: [pygtk] PyObject fails with Gst on signal sync-message::element

[Angel Guzman Maeso]

2011/11/1 Tomeu Vizoso to...@sugarlabs.org

 Hi,

 what version of GStreamer are you using? I think only 0.11 (future
 1.0) can be used through introspection. There are other programs that
 are being ported to introspection and that use GStreamer, such as
 Pitivi, I would look at them for ideas.

 Regards,

 Tomeu


Hi, I am using Ubuntu 10.10 Oneiric. The default version of GStreamer seems
to be 0.10

$ ls /usr/share/gir-1.0/ | grep Gst
Gst-0.10.gir
GstApp-0.10.gir
GstAudio-0.10.gir
GstBase-0.10.gir
GstCheck-0.10.gir
GstController-0.10.gir
GstFft-0.10.gir
GstInterfaces-0.10.gir
GstNet-0.10.gir
GstNetbuffer-0.10.gir
GstPbutils-0.10.gir
GstRiff-0.10.gir
GstRtp-0.10.gir
GstRtsp-0.10.gir
GstSdp-0.10.gir
GstTag-0.10.gir
GstVideo-0.10.gir

Where I can find 0.11 (1.0) for download and compile on Ubuntu? I need to
fix this ASAP (I am doing a app for my dissertation).
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Re: [pygtk] PyObject fails with Gst on signal sync-message::element

[Angel Guzman Maeso]

2011/11/1 Tomeu Vizoso to...@sugarlabs.org

 On Tue, Nov 1, 2011 at 19:37, Angel Guzman Maeso shaka...@gmail.com
 wrote:
  Where I can find 0.11 (1.0) for download and compile on Ubuntu? I need to
  fix this ASAP (I am doing a app for my dissertation).

 If you are in such a hurry, may be better to stay with the old static
 bindings.

 Regards,

 Tomeu


But all my app already works with Gtk3 (it took me a week) and I want use
GTK3, so if it is needed compile new sources no problem for me, just I need
the info.

Could you provide me more info about 0.11?

I clone this repo:

git clone git://anongit.freedesktop.org/gstreamer/gst-python
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Re: [pygtk] PyObject fails with Gst on signal sync-message::element

[Angel Guzman Maeso]

Please, anybody can help me? I search on pygstreamer and GIR files code and
changelog and there is not reference for changes related with
syn-message::element.
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[pygtk] PyObject fails with Gst on signal sync-message::element

[Angel Guzman Maeso]

Hi everyone,

I am migrating a old code written with GTK+ 2.X to GTK 3+ for play a .ogv
video with gstreamer.

The problem seems that the signal sync-message::element is never launched
(but if it is launched sync-message).
So, as result we cannot attach a Gtk.DrawingArea() inside of another window
because I dont get never the window.xid

This is the old code for GTK+ 2.x working perfectly:


import pygtk
pygtk.require('2.0')
import gtk
import pygst
pygst.require('0.10')
import gst
import os, sys

class Video:

def __init__(self):

def on_message(bus, message):
if message.type == gst.MESSAGE_EOS:
# End of Stream
player.set_state(gst.STATE_NULL)
elif message.type == gst.MESSAGE_ERROR:
player.set_state(gst.STATE_NULL)
(err, debug) = message.parse_error()
print Error: %s % err, debug

def on_sync_message(bus, message):
if message.structure is None:
return False
if message.structure.get_name() == prepare-xwindow-id:
if sys.platform == win32:
win_id = videowidget.window.handle
else:
win_id = videowidget.window.xid
assert win_id

gtk.gdk.threads_enter()
gtk.gdk.display_get_default().sync()
imagesink = message.src
imagesink.set_property(force-aspect-ratio, True)
imagesink.set_xwindow_id(win_id)
gtk.gdk.threads_leave()

win = gtk.Window()
win.set_resizable(False)
win.set_has_frame(False)
win.set_position(gtk.WIN_POS_CENTER)

fixed = gtk.Fixed()
win.add(fixed)
fixed.show()

videowidget = gtk.DrawingArea()
fixed.put(videowidget, 0, 0)
videowidget.set_size_request(640, 480)
videowidget.show()

# Setup GStreamer
player = gst.element_factory_make(playbin, MultimediaPlayer)
bus = player.get_bus()
bus.add_signal_watch()
bus.enable_sync_message_emission()
#used to get messages that GStreamer emits
bus.connect(message, on_message)
#used for connecting video to your application
bus.connect(sync-message::element, on_sync_message)
player.set_property(uri, file:// + /SOME/PATH/SOMEFILE.ogv)
player.set_state(gst.STATE_PLAYING)

win.show()

def main():
gtk.gdk.threads_init()
gtk.main()
return 0

if __name__ == __main__:
Video()
main()


And this is the new code for GTK+ 3 not working properly because xid it is
not attached creating another window:

import gi
gi.require_version('Gtk', '3.0')

from gi.repository import Gtk
from gi.repository import Gst
from gi.repository import Gdk

import os, sys

class Video:

def __init__(self):

win = Gtk.Window()
win.set_resizable(False)
#win.set_has_frame(False) I dont know the name of method on gtk3 so
comment this
#win.set_position(Gtk.WIN_POS_CENTER) same but with the constant

fixed = Gtk.Fixed()
win.add(fixed)
fixed.show()

videowidget = Gtk.DrawingArea()
fixed.put(videowidget, 0, 0)
videowidget.set_size_request(640, 480)
videowidget.show()

# Setup GStreamer
Gst.init_check(None)
self.player = Gst.ElementFactory.make(playbin, MultimediaPlayer)
self.player.set_state(Gst.State.NULL)
bus = self.player.get_bus()
bus.add_signal_watch()
bus.enable_sync_message_emission()
#used to get messages that GStreamer emits
bus.connect('message::eos', self.on_message_eos)
bus.connect('message::error', self.on_message_error)
#used for connecting video to your application
bus.connect(sync-message::element, self.on_sync_message)
self.player.set_property(uri, file:// +
/SOME/PATH/SOMEFILE.ogv)
self.player.set_state(Gst.State.PLAYING)

win.show()
def on_message_eos(self, bus, message):
# End of Stream
self.player.set_state(Gst.State.NULL)

def on_message_error(self, bus, message):
# End of Stream
self.player.set_state(Gst.State.NULL)
print 'Error'

def on_sync_message(self, bus, message):
print hola
if message.structure is None:
return False
if message.structure.get_name() == prepare-xwindow-id:
if sys.platform == win32:
   win_id = videowidget.window.handle
else:
win_id = videowidget.window.xid
assert win_id

Gdk.threads_enter()
Gdk.display_get_default().sync()
imagesink = message.src
imagesink.set_property(force-aspect-ratio, True)
imagesink.set_xwindow_id(win_id)
Gdk.threads_leave()

def main():

[pygtk] How to make a POST request?

[Angel Guzman Maeso]

Hi, I new using python + webkit.

I need make a POST request with webkit, but I dont know how to it.

I have this example with urllib:

#!/usr/bin/python

import urllib2, urllib
import httplib

server = 'server.somesite.com'
data = {'name' : 'shakaran', 'password' : 'Only_I_know'}
d = urllib.urlencode(data)
headers = {Content-type: application/x-www-form-
urlencoded,
Accept: text/plain}
conn = httplib.HTTPConnection(server)
conn.request(POST, /login.php, d, headers)
response = conn.getresponse()
if response.status == 200:
   print response.status, response.reason
   print response.getheaders()
   data = response.read()
   print data
conn.close()

I need a simple example with webkit. I look in the documentation for
Webkit.HTTPRequest
http://www.webwareforpython.org/WebKit/Docs/Source/Docs/WebKit.HTTPRequest.html

I try with webkit.NetworkRequest() but I don't know how to it.

Some help? Thanks


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Tivion: a simple streaming player for TV, Radio and Sopcast
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Re: [pygtk] PyGTK and visual python integration

[Angel Guzman Maeso]

2009/12/7 Michele Mattioni matti...@gmail.com

 Hello PyGTK list,

 I'm trying to use Visual Python [1] with PyGTK.

 My goal is to run the PyGTK app from an ipython console with the
 interactive loop, to launch the visual python and to be able to process the
 input coming from the console.

 I was able to do it on ubuntu jaunty, but for some reasons this is not the
 case anymore in karmic.

 The version I was using before of Ipython 0.9.1, what is shipped with
 karmic is 0.10.
 The PyGTK in jaunty is 2.14.1-1ubuntu1 and in karmic is 2.16.0-0ubuntu1

 With the 0.9.1 ipython version and the 2.14 PyGTK I was able to achieve
 this behaviour starting the console with the -pylab options, and I was using
 GTKAgg as my backend.

 In my program it was possible to start a visual window clicking on a gtk
 button. I attach a simple case code to show the problem.

 What has changed ?

 Is Ipython, PyGTK or both?

 [1] http://vpython.org/
 [2] http://ipython.scipy.org

 Regards,
 Michele.

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For me, this line:
import visual
Generate a segmentation fault (I use Ubuntu Lucid alpha 1) and I did before:
sudo apt-get install python-visual
Maybe you should report a bug for visual python on Ubuntu package.

-- 
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