Re: Unicode in .eps output

[Lars Clausen <lrclause cs uiuc edu>]

On 1 Oct 2003, Gerard Milmeister wrote:
> On Tue, 2003-09-30 at 07:48, Lars Clausen wrote:
>> On 29 Sep 2003, Gerard Milmeister wrote:
>>> I installed dia 0.92-pre4 because 0.91 didn't work
>>> with pango 1.2.5.
>>> However Unicode characters in eps output is wrong. I used
>>> for example uppercase gamma, and a different character
>>> appears in the Postscript file, although png output is
>>> correct. If I recall correctly in 0.91 the PS output 
>>> was correct.
>>
>> This is with Pango rendered output?  PS fonts don't handle Unicode at
>> all, really.
> 
> Ok, I understand now. Using the commandline converter dia 0.91
> used the pango renderer by default, but 0.92 uses the PS fonts.
> Is it possible to choose the renderer on the command line?

No.  The PS/Pango selection is a kludge, as mentioned earlier, and there's
no way to select which of two eps outputs you want on the commandline.

> Shouldn't it be possible to use Unicode characters in Postscript?

Not without a lot more work.

>> Indeed.  We should have a more usable way to pass parameters to the
>> export filters.  Currently only the PNG export takes parameters, and it
>> does that in a kludgy way.
> But not on the command line, or does it?

Nope.

> Another problem is that the bounding box is too large at the bottom if
> there is a text object is at the bottom.

The bounding box of text is determined by line spacing, thus it is larger
than the text itself.  At some point will we need to distinguish between
bounding boxes (which include interactive stuff like cursors and bezier
handles) and rendered extents.

> Also there is no correspondence between the font size in dia
> and the font size in the generated .eps file. I would like to
> specify 10pt font and actually have a 10pt font in Postscript.
> Otherwise I have to scale the graphics in TeX, and I can do
> this only visually to exactly match the font size in the main
> text.

That's not a text issue, but an issue of the whole rendering size.  If it
was just the text, it'd overflow the boxes.

I'd like to specify 10pt in Dia, too, but nobody's implemented units yet.

-Lars

-- 
Lars Clausen (http://shasta.cs.uiuc.edu/~lrclause)| HĂ„rdgrim of Numenor
"I do not agree with a word that you say, but I   |----------------------------
will defend to the death your right to say it."   | Where are we going, and
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