Re: Djvu mode

[Camm Maguire]

Greetings!  OK here is the alignment patch:

--- djvm2.el    2011-09-22 14:19:41.000000000 +0000
+++ djvm3.el    2011-10-03 19:57:18.000000000 +0000
@@ -630,7 +630,10 @@
 (defun djvm-box-to-rect (p c &optional perm)
   (let* ((w (caar p))(w (cdr w))(xn (pop w))(yn (pop w))(xx (pop w))(yx (pop 
w)) 
         (p (caar (last p)))(p (cdr p))(pxn (pop p))(pyn (pop p))(pxx (pop 
p))(pyx (pop p))
-        (xn (- xn pxn))(xx (- xx pxn))(yn (- yn pyn))(yx (- yx pyn))(pxx (- 
pxx pxn))(pyx (- pyx pyn)))
+;       (xn (- xn pxn))(yn (- yn pyn))
+;       (xx (- xx pxn))(yx (- yx pyn))
+        (pxx (+ pxx pxn))(pyx (+ pyx pyn))
+        )
     `(rect
       ,(/ (float xn) pxx)
       ,(- 1.0 (/ (float yx) pyx))


Thanks again!


"Roland Winkler" <address@hidden> writes:

> On Sun Oct 2 2011 Camm Maguire wrote:
>> Currently the code ignores but preserves non-djvm-mode produced
>> annotations, but this should be easy to add.  
>
> I am sorry, I am confused! What kind of annotations are then added
> to the file? Are they incompatible with the standard djvu format?
> Why that?
>
>> Me too.  This is the main point.  I am currently using it for this
>> with success.  I'm not really sure though whether text notes are best
>> placed in the file, as you have to click on the box to see them (in
>> emacs djvm mode or djview), 
>
> Depending on how you set up the annotations. djview displays them
> immediately - at least for me (with DjVuLibre DjView 4.5 under GNU linux).
>
>> > nicely displays these annotations including any text layers they
>> > might have.
>> 
>> Emacs with this mode does too, but just for the annotations it writes
>> itself at the moment.  It labels these with a "djvm" comment.
>
> Why "djvm"? Why being incompatible?
>
>> This is a somewhat common indication of a poorly constructed text
>> layer by an early ocr engine.  I've always cleared this by a fresh
>> ocrodjvu --in-place foo.djvu.  Boxes then line up perfectly.  I think
>> the ocr code has only very recently matured.
>
> Again I am confused. Take the djvu file I attached earlier in this
> thread (produced with pdf2djvu-0.7.7). If I search a word via
> djview, it highlights the matches such that the boxes are perfectly
> aligned with the text. So I assume that the djvu file is OK. Yet
> with your mode the highlighting is shifted relative to what it is
> supposed to match. Something is misaligned here. 
> (My emacs is GNU Emacs 24.0.50.1 (x86_64-unknown-linux-gnu, GTK+
> Version 2.20.1) of 2011-09-19.)
>
> What am I missing here?
>
> Roland
>
>
>
>

-- 
Camm Maguire                                        address@hidden
==========================================================================
"The earth is but one country, and mankind its citizens."  --  Baha'u'llah