[matplotlib-devel] PyGTK vs PyGObject

2012-10-05 Thread todd rme
I am trying to do some experimental packages with python 3 and the
latest RC, and I am trying to figure out the situation with some of
the backends.  Some are obvious, like wxwidgets and PyQt (Qt3
version).

The issue I am running into is with the gtk backend  PyGTK is
deprecated.  According to the website, all development halted a year
and a half ago and they say to use PyGObject instead.  PyGTK, as far
as I can tell, does not support Python 3 or GTK 3.  PyGObject,
however, supports both.  So I was wondering what I should be doing
with this backend.  Does matplotlib support PyGObject, or should the
GTK backends just be disabled on Python 3 builds?

Thanks for your help.

-Todd

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Re: [matplotlib-devel] PyGTK vs PyGObject

2012-10-05 Thread Michael Droettboom

On 10/05/2012 06:38 AM, todd rme wrote:

I am trying to do some experimental packages with python 3 and the
latest RC, and I am trying to figure out the situation with some of
the backends.  Some are obvious, like wxwidgets and PyQt (Qt3
version).

The issue I am running into is with the gtk backend  PyGTK is
deprecated.  According to the website, all development halted a year
and a half ago and they say to use PyGObject instead.  PyGTK, as far
as I can tell, does not support Python 3 or GTK 3.  PyGObject,
however, supports both.  So I was wondering what I should be doing
with this backend.  Does matplotlib support PyGObject, or should the
GTK backends just be disabled on Python 3 builds?

The new Gtk3Cairo backend uses PyGObject and works under Python 3. (This 
refers to Gtk version 3, which is also only supported by PyGObject -- 
the backend could perhaps have been called PyGObject, but in fact the 
toolkit used is still Gtk, so the naming is perhaps a bit confusing).  
The older pygtk backend still ships with Python 3, but a warning is 
displayed when the user attempts to use it.


Once PyGObject/PyCairo addresses a shortcoming [1] that prevents a 
bitmap buffer from being transferred to an on screen window, the Gtk3Agg 
backend will also work.


http://lists.cairographics.org/archives/cairo/2011-November/022519.html

BTW -- this report has languished for almost a year.  Does anyone know a 
better way to get the ear of the pycairo developers?


Mike
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Re: [matplotlib-devel] PyGTK vs PyGObject

2012-10-05 Thread Benjamin Root
On Fri, Oct 5, 2012 at 9:57 AM, Michael Droettboom  wrote:

>  On 10/05/2012 06:38 AM, todd rme wrote:
>
> I am trying to do some experimental packages with python 3 and the
> latest RC, and I am trying to figure out the situation with some of
> the backends.  Some are obvious, like wxwidgets and PyQt (Qt3
> version).
>
> The issue I am running into is with the gtk backend  PyGTK is
> deprecated.  According to the website, all development halted a year
> and a half ago and they say to use PyGObject instead.  PyGTK, as far
> as I can tell, does not support Python 3 or GTK 3.  PyGObject,
> however, supports both.  So I was wondering what I should be doing
> with this backend.  Does matplotlib support PyGObject, or should the
> GTK backends just be disabled on Python 3 builds?
>
>
>  The new Gtk3Cairo backend uses PyGObject and works under Python 3.  (This
> refers to Gtk version 3, which is also only supported by PyGObject -- the
> backend could perhaps have been called PyGObject, but in fact the toolkit
> used is still Gtk, so the naming is perhaps a bit confusing).  The older
> pygtk backend still ships with Python 3, but a warning is displayed when
> the user attempts to use it.
>
> Once PyGObject/PyCairo addresses a shortcoming [1] that prevents a bitmap
> buffer from being transferred to an on screen window, the Gtk3Agg backend
> will also work.
>
> http://lists.cairographics.org/archives/cairo/2011-November/022519.html
>
> BTW -- this report has languished for almost a year.  Does anyone know a
> better way to get the ear of the pycairo developers?
>
> Mike
>
>
I had good response time when I went straight to their IRC channel one time
(I don't remember the location, it was listed on their dev pages, I think).

Ben Root
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Re: [matplotlib-devel] PyGTK vs PyGObject

2012-10-05 Thread Damon McDougall
On Friday, October 5, 2012, Michael Droettboom wrote:

>  On 10/05/2012 06:38 AM, todd rme wrote:
>
> I am trying to do some experimental packages with python 3 and the
> latest RC, and I am trying to figure out the situation with some of
> the backends.  Some are obvious, like wxwidgets and PyQt (Qt3
> version).
>
> The issue I am running into is with the gtk backend  PyGTK is
> deprecated.  According to the website, all development halted a year
> and a half ago and they say to use PyGObject instead.  PyGTK, as far
> as I can tell, does not support Python 3 or GTK 3.  PyGObject,
> however, supports both.  So I was wondering what I should be doing
> with this backend.  Does matplotlib support PyGObject, or should the
> GTK backends just be disabled on Python 3 builds?
>
>
>  The new Gtk3Cairo backend uses PyGObject and works under Python 3.  (This
> refers to Gtk version 3, which is also only supported by PyGObject -- the
> backend could perhaps have been called PyGObject, but in fact the toolkit
> used is still Gtk, so the naming is perhaps a bit confusing).  The older
> pygtk backend still ships with Python 3, but a warning is displayed when
> the user attempts to use it.
>
> Once PyGObject/PyCairo addresses a shortcoming [1] that prevents a bitmap
> buffer from being transferred to an on screen window, the Gtk3Agg backend
> will also work.
>
> http://lists.cairographics.org/archives/cairo/2011-November/022519.html
>
> BTW -- this report has languished for almost a year.  Does anyone know a
> better way to get the ear of the pycairo developers?
>
> Mike
>

Do we use pycairo to interface with the Cairo library? Is there any reason
we don't use the C (or C++, I can't remember what libcairo is written in)
directly?

This may get around the issue, but it'd be a lot of work...


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http://www.damon-is-a-geek.com
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Re: [matplotlib-devel] PyGTK vs PyGObject

2012-10-05 Thread Michael Droettboom

On 10/05/2012 09:57 AM, Michael Droettboom wrote:

On 10/05/2012 06:38 AM, todd rme wrote:

I am trying to do some experimental packages with python 3 and the
latest RC, and I am trying to figure out the situation with some of
the backends.  Some are obvious, like wxwidgets and PyQt (Qt3
version).

The issue I am running into is with the gtk backend  PyGTK is
deprecated.  According to the website, all development halted a year
and a half ago and they say to use PyGObject instead.  PyGTK, as far
as I can tell, does not support Python 3 or GTK 3.  PyGObject,
however, supports both.  So I was wondering what I should be doing
with this backend.  Does matplotlib support PyGObject, or should the
GTK backends just be disabled on Python 3 builds?

The new Gtk3Cairo backend uses PyGObject and works under Python 3.  
(This refers to Gtk version 3, which is also only supported by 
PyGObject -- the backend could perhaps have been called PyGObject, but 
in fact the toolkit used is still Gtk, so the naming is perhaps a bit 
confusing).  The older pygtk backend still ships with Python 3, but a 
warning is displayed when the user attempts to use it.


Once PyGObject/PyCairo addresses a shortcoming [1] that prevents a 
bitmap buffer from being transferred to an on screen window, the 
Gtk3Agg backend will also work.


http://lists.cairographics.org/archives/cairo/2011-November/022519.html

It turns out that this was addressed in git last May and it does in fact 
work with matplotlib.  Once a new pycairo release is out and makes it 
into the package managers, the Gtk3Agg backend should work on Python 3.


Mike
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Re: [matplotlib-devel] PyGTK vs PyGObject

2012-10-05 Thread Michael Droettboom

On 10/05/2012 11:40 AM, Damon McDougall wrote:

On Friday, October 5, 2012, Michael Droettboom wrote:

On 10/05/2012 06:38 AM, todd rme wrote:

I am trying to do some experimental packages with python 3 and the
latest RC, and I am trying to figure out the situation with some of
the backends.  Some are obvious, like wxwidgets and PyQt (Qt3
version).

The issue I am running into is with the gtk backend  PyGTK is
deprecated.  According to the website, all development halted a year
and a half ago and they say to use PyGObject instead.  PyGTK, as far
as I can tell, does not support Python 3 or GTK 3.  PyGObject,
however, supports both.  So I was wondering what I should be doing
with this backend.  Does matplotlib support PyGObject, or should the
GTK backends just be disabled on Python 3 builds?


The new Gtk3Cairo backend uses PyGObject and works under Python
3.  (This refers to Gtk version 3, which is also only supported by
PyGObject -- the backend could perhaps have been called PyGObject,
but in fact the toolkit used is still Gtk, so the naming is
perhaps a bit confusing).  The older pygtk backend still ships
with Python 3, but a warning is displayed when the user attempts
to use it.

Once PyGObject/PyCairo addresses a shortcoming [1] that prevents a
bitmap buffer from being transferred to an on screen window, the
Gtk3Agg backend will also work.

http://lists.cairographics.org/archives/cairo/2011-November/022519.html

BTW -- this report has languished for almost a year.  Does anyone
know a better way to get the ear of the pycairo developers?

Mike


Do we use pycairo to interface with the Cairo library? Is there any 
reason we don't use the C (or C++, I can't remember what libcairo is 
written in) directly?


This may get around the issue, but it'd be a lot of work...

We do use pycairo.  It certainly would get around the issue, but 
duplicate a lot of effort that pycairo already handles for us.


Now that I've seen that the bug has been fixed in pycairo's git (see my 
earlier message), I'm comfortable just waiting for the next pycairo 
release (assuming it's not too far off).


Mike
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Re: [matplotlib-devel] PyGTK vs PyGObject

2012-10-05 Thread Damon McDougall
On Fri, Oct 5, 2012 at 5:51 PM, Michael Droettboom  wrote:
> On 10/05/2012 11:40 AM, Damon McDougall wrote:
>
> On Friday, October 5, 2012, Michael Droettboom wrote:
>>
>> On 10/05/2012 06:38 AM, todd rme wrote:
>>
>> I am trying to do some experimental packages with python 3 and the
>> latest RC, and I am trying to figure out the situation with some of
>> the backends.  Some are obvious, like wxwidgets and PyQt (Qt3
>> version).
>>
>> The issue I am running into is with the gtk backend  PyGTK is
>> deprecated.  According to the website, all development halted a year
>> and a half ago and they say to use PyGObject instead.  PyGTK, as far
>> as I can tell, does not support Python 3 or GTK 3.  PyGObject,
>> however, supports both.  So I was wondering what I should be doing
>> with this backend.  Does matplotlib support PyGObject, or should the
>> GTK backends just be disabled on Python 3 builds?
>>
>> The new Gtk3Cairo backend uses PyGObject and works under Python 3.  (This
>> refers to Gtk version 3, which is also only supported by PyGObject -- the
>> backend could perhaps have been called PyGObject, but in fact the toolkit
>> used is still Gtk, so the naming is perhaps a bit confusing).  The older
>> pygtk backend still ships with Python 3, but a warning is displayed when the
>> user attempts to use it.
>>
>> Once PyGObject/PyCairo addresses a shortcoming [1] that prevents a bitmap
>> buffer from being transferred to an on screen window, the Gtk3Agg backend
>> will also work.
>>
>> http://lists.cairographics.org/archives/cairo/2011-November/022519.html
>>
>> BTW -- this report has languished for almost a year.  Does anyone know a
>> better way to get the ear of the pycairo developers?
>>
>> Mike
>
>
> Do we use pycairo to interface with the Cairo library? Is there any reason
> we don't use the C (or C++, I can't remember what libcairo is written in)
> directly?
>
> This may get around the issue, but it'd be a lot of work...
>
> We do use pycairo.  It certainly would get around the issue, but duplicate a
> lot of effort that pycairo already handles for us.
>
> Now that I've seen that the bug has been fixed in pycairo's git (see my
> earlier message), I'm comfortable just waiting for the next pycairo release
> (assuming it's not too far off).
>
> Mike

Of course. I was merely asking to qualm my curiosity rather than
suggesting a major codebase re-haul. Thanks for looking into this.

-- 
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Re: [matplotlib-devel] PyGTK vs PyGObject

2012-10-05 Thread Chris Barker
On Fri, Oct 5, 2012 at 9:51 AM, Michael Droettboom  wrote:

> We do use pycairo.  It certainly would get around the issue, but duplicate a
> lot of effort that pycairo already handles for us.

A bit OT -- but have you added, and or does pyCairo have, numpy-array awareness?

i.e. is there an efficient way to pass a lo tof coordinate parie,s etc
to pyCairo?

Just wondering, 'cause I'm trying to decide on a rendering lib to use
for another project.

-Chris


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Re: [matplotlib-devel] PyGTK vs PyGObject

2012-10-05 Thread Michael Droettboom
On 10/05/2012 02:53 PM, Chris Barker wrote:
> On Fri, Oct 5, 2012 at 9:51 AM, Michael Droettboom  wrote:
>
>> We do use pycairo.  It certainly would get around the issue, but duplicate a
>> lot of effort that pycairo already handles for us.
> A bit OT -- but have you added, and or does pyCairo have, numpy-array 
> awareness?
>
> i.e. is there an efficient way to pass a lo tof coordinate parie,s etc
> to pyCairo?
>
> Just wondering, 'cause I'm trying to decide on a rendering lib to use
> for another project.
>
Not as far as I know for path data.  The upcoming pycairo version 
supports using image buffers (which can be Numpy arrays), but that's not 
helpful for drawing lines etc.

Mike

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