When saved as SVG, SB units are in points; could SVG unit kind be configurable by a script?

Discussion:

Dave Crossland

2009-01-20 15:40:08 UTC

Hi,

After a chat with Ricardo I thought I could take a crack at using
ShoeBot to create some print design page layouts.

Here is a modified /usr/share/shoebot/examples/var/VarText.bot for
generating type specimens (previews) for printing;

-- 8< --
#var("tx",TEXT,"abcdefghijklmnopqrstuvwxyz")
#var("sz",NUMBER,100,10,200)

size(298,210);
colorrange(255)

def draw():
background(255)
fontFilename = "/usr/share/fonts/liberation/LiberationSans-Regular.ttf'"
font(fontFilename)

# fontsize(sz)
# text(tx,10,HEIGHT-((HEIGHT/5)*3))

fontsize(60)
text("adhesion",10,HEIGHT-60)

fontsize(18.7)
text("abcdefghijklmnopqrstuvwxyz",10,HEIGHT-30)

fontsize(9)
text("This is "+str(fontFilename),10,HEIGHT-10)
-- 8< --

However, when I run this and, if it runs okay, open it in Inkscape -

$ sbot typeSpecimenMaker.bot -o output.svg && inkscape output.svg

- then the size() is of course in points instead of pixels.

I tried to search the sourcecode, but can see no way to change PT to
MM. I guess because it is a Cairo default that needs to be overridden
somewhere.

Does anyone have any suggestions? :-)

--
Regards,
Dave

ricardo lafuente

2009-01-20 16:43:56 UTC

Permalink

Nodebox has a pretty neat way of solving the units issue:
http://nodebox.net/code/index.php/Reference_|_size()
just a few conversion constants to be multiplied to the point sizes;
i'll try to get this in shoebot today

Post by Dave Crossland
Hi,
After a chat with Ricardo I thought I could take a crack at using
ShoeBot to create some print design page layouts.
Here is a modified /usr/share/shoebot/examples/var/VarText.bot for
generating type specimens (previews) for printing;
-- 8< --
#var("tx",TEXT,"abcdefghijklmnopqrstuvwxyz")
#var("sz",NUMBER,100,10,200)
size(298,210);
colorrange(255)
background(255)
fontFilename = "/usr/share/fonts/liberation/LiberationSans-Regular.ttf'"
font(fontFilename)
# fontsize(sz)
# text(tx,10,HEIGHT-((HEIGHT/5)*3))
fontsize(60)
text("adhesion",10,HEIGHT-60)
fontsize(18.7)
text("abcdefghijklmnopqrstuvwxyz",10,HEIGHT-30)
fontsize(9)
text("This is "+str(fontFilename),10,HEIGHT-10)
-- 8< --
However, when I run this and, if it runs okay, open it in Inkscape -
$ sbot typeSpecimenMaker.bot -o output.svg && inkscape output.svg
- then the size() is of course in points instead of pixels.
I tried to search the sourcecode, but can see no way to change PT to
MM. I guess because it is a Cairo default that needs to be overridden
somewhere.
Does anyone have any suggestions? :-)

ricardo lafuente

2009-01-20 17:57:06 UTC

Permalink

turns out we had the unit thing, but our size() check in gtkui.py needed
some tweaking in order to support expressions in parameters, e.g.
size(3*cm, 3*cm),

stuff like size(random(0,100), random(0,100)) doesn't work yet because
of some string parsing intricacies in there, i'm on it now.

Francesco, i hope i didn't break anything there :)

i tested it a bit with the example scripts and it seems to be working...

Post by ricardo lafuente
http://nodebox.net/code/index.php/Reference_|_size()
just a few conversion constants to be multiplied to the point sizes;
i'll try to get this in shoebot today

Post by Dave Crossland
Hi,
After a chat with Ricardo I thought I could take a crack at using
ShoeBot to create some print design page layouts.
Here is a modified /usr/share/shoebot/examples/var/VarText.bot for
generating type specimens (previews) for printing;
-- 8< --
#var("tx",TEXT,"abcdefghijklmnopqrstuvwxyz")
#var("sz",NUMBER,100,10,200)
size(298,210);
colorrange(255)
background(255)
fontFilename =
"/usr/share/fonts/liberation/LiberationSans-Regular.ttf'"
font(fontFilename)
# fontsize(sz)
# text(tx,10,HEIGHT-((HEIGHT/5)*3))
fontsize(60)
text("adhesion",10,HEIGHT-60)
fontsize(18.7)
text("abcdefghijklmnopqrstuvwxyz",10,HEIGHT-30)
fontsize(9)
text("This is "+str(fontFilename),10,HEIGHT-10)
-- 8< --
However, when I run this and, if it runs okay, open it in Inkscape -
$ sbot typeSpecimenMaker.bot -o output.svg && inkscape output.svg
- then the size() is of course in points instead of pixels.
I tried to search the sourcecode, but can see no way to change PT to
MM. I guess because it is a Cairo default that needs to be overridden
somewhere.
Does anyone have any suggestions? :-)

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Shoebot-devel mailing list
http://lists.tinkerhouse.net/listinfo.cgi/shoebot-devel-tinkerhouse.net

Dave Crossland

2009-01-20 18:08:31 UTC

Permalink

Post by ricardo lafuente
i tested it a bit with the example scripts and it seems to be working...

Great!

Did you pull the http://freehg.org/u/hva/ variants yet?

I'm using http://freehg.org/u/hva/shoebot-i18/ for this text stuff,
the Pango support is a priority for the new release I think :-)

Dave Crossland

2009-01-20 18:08:53 UTC

Permalink

Post by Dave Crossland
Did you pull the http://freehg.org/u/hva/ variants yet?

(and others, not just to single out HVA :-)

architetto francesco fantoni <hva - hermanitos verdes architetti>

2009-01-20 18:10:35 UTC

Permalink

yes, it definitely needed some hacking there: my size parsing code was
rather crappy... I knew it.

Post by ricardo lafuente
turns out we had the unit thing, but our size() check in gtkui.py needed
some tweaking in order to support expressions in parameters, e.g.
size(3*cm, 3*cm),
stuff like size(random(0,100), random(0,100)) doesn't work yet because
of some string parsing intricacies in there, i'm on it now.
Francesco, i hope i didn't break anything there :)
i tested it a bit with the example scripts and it seems to be working...

Post by ricardo lafuente
http://nodebox.net/code/index.php/Reference_|_size()
just a few conversion constants to be multiplied to the point sizes;
i'll try to get this in shoebot today

Post by Dave Crossland
Hi,
After a chat with Ricardo I thought I could take a crack at using
ShoeBot to create some print design page layouts.
Here is a modified /usr/share/shoebot/examples/var/VarText.bot for
generating type specimens (previews) for printing;
-- 8< --
#var("tx",TEXT,"abcdefghijklmnopqrstuvwxyz")
#var("sz",NUMBER,100,10,200)
size(298,210);
colorrange(255)
background(255)
fontFilename =
"/usr/share/fonts/liberation/LiberationSans-Regular.ttf'"
font(fontFilename)
# fontsize(sz)
# text(tx,10,HEIGHT-((HEIGHT/5)*3))
fontsize(60)
text("adhesion",10,HEIGHT-60)
fontsize(18.7)
text("abcdefghijklmnopqrstuvwxyz",10,HEIGHT-30)
fontsize(9)
text("This is "+str(fontFilename),10,HEIGHT-10)
-- 8< --
However, when I run this and, if it runs okay, open it in Inkscape -
$ sbot typeSpecimenMaker.bot -o output.svg && inkscape output.svg
- then the size() is of course in points instead of pixels.
I tried to search the sourcecode, but can see no way to change PT to
MM. I guess because it is a Cairo default that needs to be overridden
somewhere.
Does anyone have any suggestions? :-)

_______________________________________________
Shoebot-devel mailing list
http://lists.tinkerhouse.net/listinfo.cgi/shoebot-devel-tinkerhouse.net

ricardo lafuente

2009-01-20 19:12:20 UTC

Permalink

had to back out my other changeset since i messed up Francesco's size()
parser;

but i believe it works properly now, even with complicated expressions

just pushed changes to the dev tree

Post by architetto francesco fantoni <hva - hermanitos verdes architetti>
yes, it definitely needed some hacking there: my size parsing code was
rather crappy... I knew it.

Post by ricardo lafuente
http://nodebox.net/code/index.php/Reference_|_size()
just a few conversion constants to be multiplied to the point sizes;
i'll try to get this in shoebot today

Post by Dave Crossland
Hi,
After a chat with Ricardo I thought I could take a crack at using
ShoeBot to create some print design page layouts.
Here is a modified /usr/share/shoebot/examples/var/VarText.bot for
generating type specimens (previews) for printing;
-- 8< --
#var("tx",TEXT,"abcdefghijklmnopqrstuvwxyz")
#var("sz",NUMBER,100,10,200)
size(298,210);
colorrange(255)
background(255)
fontFilename =
"/usr/share/fonts/liberation/LiberationSans-Regular.ttf'"
font(fontFilename)
# fontsize(sz)
# text(tx,10,HEIGHT-((HEIGHT/5)*3))
fontsize(60)
text("adhesion",10,HEIGHT-60)
fontsize(18.7)
text("abcdefghijklmnopqrstuvwxyz",10,HEIGHT-30)
fontsize(9)
text("This is "+str(fontFilename),10,HEIGHT-10)
-- 8< --
However, when I run this and, if it runs okay, open it in Inkscape -
$ sbot typeSpecimenMaker.bot -o output.svg && inkscape output.svg
- then the size() is of course in points instead of pixels.
I tried to search the sourcecode, but can see no way to change PT to
MM. I guess because it is a Cairo default that needs to be overridden
somewhere.
Does anyone have any suggestions? :-)

_______________________________________________
Shoebot-devel mailing list
http://lists.tinkerhouse.net/listinfo.cgi/shoebot-devel-tinkerhouse.net

Dave Crossland

2009-01-20 19:32:12 UTC

Permalink

Post by ricardo lafuente
had to back out my other changeset since i messed up Francesco's size()
parser;
but i believe it works properly now, even with complicated expressions
just pushed changes to the dev tree

Great!

Btw, when Ricardo merges in other's freehg.org (etc) trees, I think we
should be careful to remove them :-)

architetto francesco fantoni <hva - hermanitos verdes architetti>

2009-01-20 22:45:18 UTC

Permalink

great! seems to work very well!
thanks for fixing it.

Post by architetto francesco fantoni <hva - hermanitos verdes architetti>
yes, it definitely needed some hacking there: my size parsing code was
rather crappy... I knew it.

Post by ricardo lafuente
http://nodebox.net/code/index.php/Reference_|_size()
just a few conversion constants to be multiplied to the point sizes;
i'll try to get this in shoebot today

Post by Dave Crossland
Hi,
After a chat with Ricardo I thought I could take a crack at using
ShoeBot to create some print design page layouts.
Here is a modified /usr/share/shoebot/examples/var/VarText.bot for
generating type specimens (previews) for printing;
-- 8< --
#var("tx",TEXT,"abcdefghijklmnopqrstuvwxyz")
#var("sz",NUMBER,100,10,200)
size(298,210);
colorrange(255)
background(255)
fontFilename =
"/usr/share/fonts/liberation/LiberationSans-Regular.ttf'"
font(fontFilename)
# fontsize(sz)
# text(tx,10,HEIGHT-((HEIGHT/5)*3))
fontsize(60)
text("adhesion",10,HEIGHT-60)
fontsize(18.7)
text("abcdefghijklmnopqrstuvwxyz",10,HEIGHT-30)
fontsize(9)
text("This is "+str(fontFilename),10,HEIGHT-10)
-- 8< --
However, when I run this and, if it runs okay, open it in Inkscape -
$ sbot typeSpecimenMaker.bot -o output.svg && inkscape output.svg
- then the size() is of course in points instead of pixels.
I tried to search the sourcecode, but can see no way to change PT to
MM. I guess because it is a Cairo default that needs to be overridden
somewhere.
Does anyone have any suggestions? :-)

_______________________________________________
Shoebot-devel mailing list
http://lists.tinkerhouse.net/listinfo.cgi/shoebot-devel-tinkerhouse.net