More on this:
I replaced hb_buffer_set_script and hb_buffer_set_language with a call
to hb_buffer_guess_segment_properties in my own code, but no magic
happened as in hb-shape :(
El 01/10/2013 12:34, Eduardo Castineyra escribió:
HI Behdad,
I also have realized hb_shapes passes hb_buffer_set_script and
hb_buffer_set_language default parameters unless the user specifies
the opposite.
Does that mean harfbuzz automagically detects the language? Isn't that
what the itemizer was supposed to do?
Regards!
El 30/09/2013 19:00, Behdad Esfahbod escribió:
On 13-09-30 05:38 AM, Eduardo Castineyra wrote:
Thanks Behdad,
Why is there a space at the beginning of the glyph list? (I attached
the
thai.txt file)
Because your file has a "BOM" (U+FEFF) character at the beginning. With
UTF-8, that usage is discouraged as far as I know. At any rate, the
space has
zero advance and hence is invisible.
b
El 27/09/2013 18:41, Behdad Esfahbod escribió:
On 13-09-27 12:36 PM, Eduardo Castineyra wrote:
This is the json file I got:
hb-shape --font-file=leelawad.ttf --text-file=thai.txt
--output-format=json
--output-file=thaiglyphs.txt --shapers=ot
[{"g":"space","cl":0,"dx":0,"dy":0,"ax":0,"ay":0},{"g":"uni0E2B","cl":1,"dx":0,"dy":0,"ax":1207,"ay":0},{"g":"uni0E49","cl":1,"dx":217,"dy":0,"ax":0,"ay":0},{"g":"uni0E31","cl":1,"dx":114,"dy":500,"ax":0,"ay":0},{"g":"space","cl":4,"dx":0,"dy":0,"ax":1122,"ay":0},{"g":"uni0E2B","cl":5,"dx":0,"dy":0,"ax":1207,"ay":0},{"g":"uni0E31","cl":5,"dx":114,"dy":0,"ax":0,"ay":0},{"g":"space","cl":7,"dx":0,"dy":0,"ax":1122,"ay":0},{"g":"uni0E2B","cl":8,"dx":0,"dy":0,"ax":1207,"ay":0},{"g":"uni0E49","cl":8,"dx":217,"dy":0,"ax":0,"ay":0},{"g":"space","cl":10,"dx":0,"dy":0,"ax":1122,"ay":0},{"g":"uni0E2B","cl":11,"dx":0,"dy":0,"ax":1207,"ay":0},{"g":"uni0E31","cl":11,"dx":114,"dy":0,"ax":0,"ay":0},{"g":"uni0E49.sm","cl":11,"dx":114,"dy":500,"ax":0,"ay":0}]
I see the cluster, the deltas, the advances, but I'm still missing
the glyph
indices for the font. Do you know what "uni0E49.sm" means?
Those are glyph names. Pass --no-glyph-names to get raw glyph
number instead.
El 26/09/2013 20:23, Khaled Hosny escribió:
Use --output-format=json, should be a bit more explanatory.
Myself, I
often forget which number is which, but you basically get glyph
name,
cluster value, X and Y advance and delta.
The glyph name is equivalent to glyph index, just a bit more
readable.
The cluster value is basically the index of the corresponding
character
in the input string (though the relation can be complex). The
advances
and deltas are what HarfBuzz clients will use to calculate the
absolute
glyph position, HarfBuzz itself does not do that.
Regards,
Khaled
On Thu, Sep 26, 2013 at 07:51:20PM +0200, Eduardo Castineyra wrote:
Now I see it, thanks!
How should I interpret the outcome for hb-shape?
hb-shape leelawad.ttf --text-file=thai.txt
[space=0+0|uni0E2B=1+1207|uni0E49=1@217,0+0|uni0E31=1@114,500+0|space=4+1122|uni0E2B=5+1207|uni0E31=5@114,0+0|space=7+1122|uni0E2B=8+1207|uni0E49=8@217,0+0|spac
e=10+1122|uni0E2B=11+1207|uni0E31=11@114,0+0|uni0E49.sm=11@114,500+0]
What I would expect to see was the unicode, the index of the glyph
inside the leelawad.ttf font, and the screen position of the glyph.
But I don't what those numbers and symbols mean.
El 26/09/2013 19:27, Khaled Hosny escribió:
On Thu, Sep 26, 2013 at 06:48:26PM +0200, Eduardo Castineyra
wrote:
Hi,
I was trying to use the hb-view and hb-shape tools but I don't
get
how do they work.
This is the output I got from hb-view, is there any
documentation to
know what can I do with the outcome?
If you don't specify an output file name, hb-view will do some
sort of
Unicode-art to draw the glyphs on the terminal. This works fine on
Unicode-capable terminals, but I guess Windows’s cmd.exe is not
such a
one. You can specify the output file name and format
explicitly, see
hb-view --help.
Regards,
Khaled
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