Cairo backend of GtkPlot

Hello,

I thought the following comment that I added to the feature
request 1382216 [1],
might be of interest to the mailing list:

I finally started working on this. So far I have created a
new implementation of the GtkPlotPC interface called
GtkPlotCairo, that draws through the cairo backend. I have
implemented most backend functions, except the text and the
image drawing. Meanwhile I have not modified the GtkPlotPC
interface.

Further I have replaced the instantiation of a GtkPlotGdk
object with the GtkPlotCairo class. The software compiles,
but still nothing is drawn in the GdkWindow. I still have
some debugging to see why that is happening.

Once I get this to work my plans are:

1. Change the API of GtkPlotPC to get rid of all the Gdk
structures in the interface, and replace these with cairo
structures.

2. Get rid of GtkPlotPC alltogether and work directly with
cairo. Possibly I will create some utility functions to make
the conversion from the current to API to cairo smoother.
							
Regards,
Dov

[1] http://tinyurl.com/olanb
(http://so
urceforge.net/tracker/index.php?func=detail&aid=1382216&
amp;group_id=11638&atid=361638)


------------------------------------------------------------
-------------
Using Tomcat but need to do more? Need to support web
services, security?
Get stuff done quickly with pre-integrated technology to
make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on
Apache Geronimo
http://sel.as-us.falkag.net/
sel?cmd=lnk&kid=120709&bid=263057&dat=121642
_______________________________________________
Scigraphica-devel mailing list
Scigraphica-devellists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/scigr
aphica-devel

That's great Dov, thanks for taking care of the port!
I guess this would also make gtkplotps obsolete.
Keep us posted with your progress.
Saludos,
<ADRIAN>

Dov Grobgeld wrote:

>Hello,
>
>I thought the following comment that I added to the
feature request 1382216 [1],
>might be of interest to the mailing list:
>
>I finally started working on this. So far I have created
a
>new implementation of the GtkPlotPC interface called
>GtkPlotCairo, that draws through the cairo backend. I
have
>implemented most backend functions, except the text and
the
>image drawing. Meanwhile I have not modified the
GtkPlotPC
>interface.
>
>Further I have replaced the instantiation of a
GtkPlotGdk
>object with the GtkPlotCairo class. The software
compiles,
>but still nothing is drawn in the GdkWindow. I still
have
>some debugging to see why that is happening.
>
>Once I get this to work my plans are:
>
>1. Change the API of GtkPlotPC to get rid of all the Gdk
>structures in the interface, and replace these with
cairo
>structures.
>
>2. Get rid of GtkPlotPC alltogether and work directly
with
>cairo. Possibly I will create some utility functions to
make
>the conversion from the current to API to cairo
smoother.
>							
>Regards,
>Dov
>
>[1] http://tinyurl.com/olanb
>(http://so
urceforge.net/tracker/index.php?func=detail&aid=1382216&
amp;group_id=11638&atid=361638)
>
>
>--------------------------------------------------------
-----------------
>Using Tomcat but need to do more? Need to support web
services, security?
>Get stuff done quickly with pre-integrated technology to
make your job easier
>Download IBM WebSphere Application Server v.1.0.1 based
on Apache Geronimo
>http://sel.as-us.falkag.net/
sel?cmd=lnk&kid=120709&bid=263057&dat=121642
>_______________________________________________
>Scigraphica-devel mailing list
>Scigraphica-devellists.sourceforge.net
>https://lists.sourceforge.net/lists/listinfo/scigr
aphica-devel
>  
>



------------------------------------------------------------
-------------
Using Tomcat but need to do more? Need to support web
services, security?
Get stuff done quickly with pre-integrated technology to
make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on
Apache Geronimo
http://sel.as-us.falkag.net/
sel?cmd=lnk&kid=120709&bid=263057&dat=121642
_______________________________________________
Scigraphica-devel mailing list
Scigraphica-devellists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/scigr
aphica-devel

Hi Adrian,

Thanks for the encouragement. I needed that to keep going.


I've put up a page showing my current progress:

    http://imagic.weizmann.ac.il/~dov/freesw/
gtk/gtk+extra-cairo/index.html

I'm a bit weary of how to continue as I would like to make
some big
changes, that are breaking backwards compatibility. They
are:

1. Replace gtk's current markup language with PangoMarkup.
2. Replace the current font mechanism with fontconfig fonts.
3. Replace symbols with static svg files.

What do you think Adrian?

Other things that need to be done:

* Get rid of the postcript backend and simply use the cairo
backend
with proper initialization.
* Get rid of gtkplotcanvas alltogether.
* Add arrows to the axes. 
* Support pdf and svg output.
* Allow drawing on user provided cairo surface. Perhaps then
we don't
need to provide save functions at all.

I'd like to putback my work in progress as a backup. Should
I create a
cvs branch?

Regards,
Dov

On 7/17/06, Adrian E. Feiguin <afeiguinkitp.ucsb.edu> wrote:
> That's great Dov, thanks for taking care of the port!
> I guess this would also make gtkplotps obsolete.
> Keep us posted with your progress.
> Saludos,
> <ADRIAN>
>
> Dov Grobgeld wrote:
>
> >Hello,
> >
> >I thought the following comment that I added to the
feature request 1382216 [1],
> >might be of interest to the mailing list:
> >
> >I finally started working on this. So far I have
created a
> >new implementation of the GtkPlotPC interface
called
> >GtkPlotCairo, that draws through the cairo backend.
I have
> >implemented most backend functions, except the text
and the
> >image drawing. Meanwhile I have not modified the
GtkPlotPC
> >interface.
> >
> >Further I have replaced the instantiation of a
GtkPlotGdk
> >object with the GtkPlotCairo class. The software
compiles,
> >but still nothing is drawn in the GdkWindow. I
still have
> >some debugging to see why that is happening.
> >
> >Once I get this to work my plans are:
> >
> >1. Change the API of GtkPlotPC to get rid of all
the Gdk
> >structures in the interface, and replace these with
cairo
> >structures.
> >
> >2. Get rid of GtkPlotPC alltogether and work
directly with
> >cairo. Possibly I will create some utility
functions to make
> >the conversion from the current to API to cairo
smoother.
> >
> >Regards,
> >Dov
> >
> >[1] http://tinyurl.com/olanb
> >(http://so
urceforge.net/tracker/index.php?func=detail&aid=1382216&
amp;group_id=11638&atid=361638)
> >
> >
>
>--------------------------------------------------------
-----------------
> >Using Tomcat but need to do more? Need to support
web services, security?
> >Get stuff done quickly with pre-integrated
technology to make your job easier
> >Download IBM WebSphere Application Server v.1.0.1
based on Apache Geronimo
> >http://sel.as-us.falkag.net/
sel?cmd=lnk&kid=120709&bid=263057&dat=121642
> >_______________________________________________
> >Scigraphica-devel mailing list
> >Scigraphica-devellists.sourceforge.net
> >https://lists.sourceforge.net/lists/listinfo/scigr
aphica-devel
> >
> >
>
>

------------------------------------------------------------
-------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the
chance to share your
opinions on IT & business topics through brief surveys
-- and earn cash
http://www.techsay.com/default.
php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
Scigraphica-devel mailing list
Scigraphica-devellists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/scigr
aphica-devel

Hi Dov,

First, I guess the best would be for you to create a CVS
branch, maybe 
"gtkextra-3".

All the changes you are suggesting make a lot of sense to
me, and I 
think would make gtkplot more versatile and powerful.
I wouldn't like to break to backward compatibility, we have
to figure 
out a way to avoid doing it, especially with the markup and
fonts. I 
guess the best way to deal with both these problems is by
adding a field 
"markup_format" to GtkPlotText. It would make
sense for it to be a 
string, so can be expanded in the future to
"XMGR"/"OldSG" (pretty much 
the actual
format),"Pango","TeX",etc. The Font
problem would be fixed 
automatically by checking what format you are using. If you
are using 
"XMGR"/"OldSG", you use the old
fontmap, otherwise, you use the 
corresponding one.

I love the idea of using SVGs for the symbols. The old ones
should be 
supplied by default, though.

I don't understand why you want to get rid of the canvas,
IMHO it's what 
makes GtkPlot so user firendly at the GUI level.

Best,
<ADRIAN>

Dov Grobgeld wrote:

> Hi Adrian,
>
> Thanks for the encouragement. I needed that to keep
going. 
>
> I've put up a page showing my current progress:
>
>    
> http://imagic.weizmann.ac.il/~dov/freesw/
gtk/gtk+extra-cairo/index.html
>
> I'm a bit weary of how to continue as I would like to
make some big
> changes, that are breaking backwards compatibility.
They are:
>
> 1. Replace gtk's current markup language with
PangoMarkup.
> 2. Replace the current font mechanism with fontconfig
fonts.
> 3. Replace symbols with static svg files.
>
> What do you think Adrian?
>
> Other things that need to be done:
>
> * Get rid of the postcript backend and simply use the
cairo backend
> with proper initialization.
> * Get rid of gtkplotcanvas alltogether.
> * Add arrows to the axes. 
> * Support pdf and svg output.
> * Allow drawing on user provided cairo surface. Perhaps
then we don't
> need to provide save functions at all.
>
> I'd like to putback my work in progress as a backup.
Should I create a
> cvs branch?
>
> Regards,
> Dov
>
> On 7/17/06, Adrian E. Feiguin <afeiguinkitp.ucsb.edu> wrote:
>
>> That's great Dov, thanks for taking care of the
port!
>> I guess this would also make gtkplotps obsolete.
>> Keep us posted with your progress.
>> Saludos,
>> <ADRIAN>
>>
>> Dov Grobgeld wrote:
>>
>> >Hello,
>> >
>> >I thought the following comment that I added to
the feature request 
>> 1382216 [1],
>> >might be of interest to the mailing list:
>> >
>> >I finally started working on this. So far I
have created a
>> >new implementation of the GtkPlotPC interface
called
>> >GtkPlotCairo, that draws through the cairo
backend. I have
>> >implemented most backend functions, except the
text and the
>> >image drawing. Meanwhile I have not modified
the GtkPlotPC
>> >interface.
>> >
>> >Further I have replaced the instantiation of a
GtkPlotGdk
>> >object with the GtkPlotCairo class. The
software compiles,
>> >but still nothing is drawn in the GdkWindow. I
still have
>> >some debugging to see why that is happening.
>> >
>> >Once I get this to work my plans are:
>> >
>> >1. Change the API of GtkPlotPC to get rid of
all the Gdk
>> >structures in the interface, and replace these
with cairo
>> >structures.
>> >
>> >2. Get rid of GtkPlotPC alltogether and work
directly with
>> >cairo. Possibly I will create some utility
functions to make
>> >the conversion from the current to API to cairo
smoother.
>> >
>> >Regards,
>> >Dov
>> >
>> >[1] http://tinyurl.com/olanb
>> >(http://so
urceforge.net/tracker/index.php?func=detail&aid=1382216&
amp;group_id=11638&atid=361638) 
>>
>> >
>> >
>>
>--------------------------------------------------------
----------------- 
>>
>> >Using Tomcat but need to do more? Need to
support web services, 
>> security?
>> >Get stuff done quickly with pre-integrated
technology to make your 
>> job easier
>> >Download IBM WebSphere Application Server
v.1.0.1 based on Apache 
>> Geronimo
>> >http://sel.as-us.falkag.net/
sel?cmd=lnk&kid=120709&bid=263057&dat=121642

>>
>> >_______________________________________________
>> >Scigraphica-devel mailing list
>> >Scigraphica-devellists.sourceforge.net
>> >https://lists.sourceforge.net/lists/listinfo/scigr
aphica-devel
>> >
>> >
>>
>>


------------------------------------------------------------
-------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the
chance to share your
opinions on IT & business topics through brief surveys
-- and earn cash
http://www.techsay.com/default.
php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
Scigraphica-devel mailing list
Scigraphica-devellists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/scigr
aphica-devel

Hi Adrian,

Regarding GtkPlotCanvas, my mistake in the name. I meant to
get rid of
the GtkPlotPC class and its implementations and use cairo
directly.
Does  that make more sense?

I hope to create the branch tonight.

Regards,
Dov

------------------------------------------------------------
-------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the
chance to share your
opinions on IT & business topics through brief surveys
-- and earn cash
http://www.techsay.com/default.
php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
Scigraphica-devel mailing list
Scigraphica-devellists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/scigr
aphica-devel

Hi Dov,

After Dov ports gtkextra to cairo, there's something that I
always 
wanted for gtkplot, an OpenGL backend. Are there any
volunteers willing 
to work on this?
Thanks!
<ADRIAN>

Dov Grobgeld wrote:

> Hi Adrian,
>
> Regarding GtkPlotCanvas, my mistake in the name. I
meant to get rid of
> the GtkPlotPC class and its implementations and use
cairo directly.
> Does  that make more sense?
>
> I hope to create the branch tonight.
>
> Regards,
> Dov



------------------------------------------------------------
-------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the
chance to share your
opinions on IT & business topics through brief surveys
-- and earn cash
http://www.techsay.com/default.
php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
Scigraphica-devel mailing list
Scigraphica-devellists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/scigr
aphica-devel