Sure. One way to do this would be to add child elements to the
<font/> element in IF output as follows:
<font family="Lateef" style="normal" ...>
<pua code="0xE000" gid="139"/>
<pua code="0xE001" gid="481"/>
<pua code="0xE002" gid="219"/>
</font>
where these PUA mappings are collected by iterating over the
characters of TextAreas governed by the <font/> element. These
characters might be iterated upon invoking
TextArea.add{Word,Space}, and collecting this info in text areas.
Alternatively, MultiByteFont.getUsedGlyphs() could be used to (1)
determine which glyph codes were referenced by the document, (2)
given these used codes, iterate of the the CMAP mappings to find
which PUA codes were generated for those glyph codes, then (3)
output the <pua/> elements (above) as required.
Finally, when reading an IF file, these <pua/> elements would be
used to augment the font's CMAP (keeping in mind that when
reading the font, MultiByteFont.createPrivateUseMappings() may
have already been called, and thus the mappings in <pua/>
elements may need to be replaced or merged.
I can imagine various other optimizations on the above theme to
make this readily workable.
On Wed, Apr 24, 2013 at 3:18 AM, Chris Bowditch
<[email protected] <mailto:[email protected]>>
wrote:
Hi Glenn,
Can you suggest an alternative approach please?
Thanks,
Chris
On 24/04/2013 02:41, Glenn Adams wrote:
I don't like this. It negates any additional processing
that may have occurred, such as letter spacing. It
requires the IF to repeat part of the layout process. Bad
idea.
On Tue, Apr 23, 2013 at 3:11 PM, Luis Bernardo
<[email protected] <mailto:[email protected]>
<mailto:[email protected]
<mailto:[email protected]>>> wrote:
With the approach implemented by Simon what gets
written to the IF
file is the original sequence, not the mapped
sequence. Then when
generating PDF from IF the same code that would
generate the
synthesized mappings when generating PDF straight
from FO is
called to recreate the mappings. So I don't think we
can say there
is information about the mappings in the text nodes.
On 4/23/13 5:50 AM, Glenn Adams wrote:
Ah, I reread your earlier (private) message. I
see the problem
has to do with the use of synthesized PUA
mappings. Here, the
problem really is that the font should always
have a CMAP entry
that maps to every glyph that can be produced by
the GSUB
process. However, not all fonts do this, so in
the case in point,
we have to synthesize some mapping, from which we
have to turn to
PUA assignments. This works when we generate PDF
since we
generate a subset font that contains the
synthesized mappings.
However, I can see that if this is going to IF
instead of PDF/PS,
then we need to find a way to recreate those
synthesized mappings.
I think this information is really font-specific,
and should not
be tied to specific text nodes though. So if
Simon's fix uses
text nodes, then that is probably not the best
approach.
On Mon, Apr 22, 2013 at 10:45 PM, Glenn Adams
<[email protected] <mailto:[email protected]>
<mailto:[email protected]
<mailto:[email protected]>>> wrote:
I'm presently at W3C WG meetings this week,
but I'll try to
get on my schedule. I'm not sure what the
IF->PS/PDF problem
is, since the IF->PDF path is clearly working
from my tests.
On Mon, Apr 22, 2013 at 4:27 PM, Luis Bernardo
<[email protected]
<mailto:[email protected]>
<mailto:[email protected]
<mailto:[email protected]>>> wrote:
Glenn,
Can you give your opinion about the
approach used by
Simon? As I mentioned before (in a
private message), the
IF -> PS/PDF route does not work in your
original CS
patch (for the languages that CS targets)
due to the
mapped sequences. Simon's approach works
but requires
keeping the original sequences alongside
the mapped ones.
I think it is a good approach but I would
like to know if
you have a better suggestion before we
apply the patch.
Thanks,
Luis
On 4/22/13 3:23 PM, Chris Bowditch (JIRA)
wrote:
[
https://issues.apache.org/jira/browse/FOP-2210?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Chris Bowditch reassigned FOP-2210:
-----------------------------------
Assignee: Chris Bowditch
[PATCH] Complex script IF to
output missing glyphs
--------------------------------------------------
Key: FOP-2210
URL:
https://issues.apache.org/jira/browse/FOP-2210
Project: Fop
Issue Type: Bug
Reporter: simon steiner
Assignee: Chris Bowditch
Attachments: csspeedtrunk.patch,
fop.xconf, test.fo
<http://test.fo> <http://test.fo>
fop test.fo <http://test.fo>
<http://test.fo> -c fop.xconf -if
application/pdf expected.if.xml
fop -c fop.xconf -ifin
expected.if.xml out.pdf
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