[reportlab-users] Anchors (was: Re: Table column width - problem with >2 cols)

[Juha Tuomala]

On Monday 29 January 2007 15:22, Robin Becker wrote:

> Well for completeness I checked in to svn a non link alias <a> tag with two forms.

> 

> #		<a>anchor text</a>

> #			attributes of anchors

> #				fontSize=num

> #				fontName=name

> #				fg/textColor/color=color

> #				backcolor/backColor/bgcolor=color

> #				href=href

> #		<a name="anchorpoint"/>

> 

> 

> the anchorpoint form doesn't allow interior text. As discussed I was able to 

> make use of the onDraw tag machinery to get the semantics working for the second 

> case. In the first case we allow href to start with # (equivalent to a document 

> scheme) or you can have href with pdf:filepath or http: etc etc.


This is great news. :-)


I tried to use those and for some reason I face a wierd problem
with it.
--------------------------------------------------------------------------
#!/usr/bin/python

from reportlab.lib.styles import getSampleStyleSheet
from reportlab.platypus.doctemplate import SimpleDocTemplate
from reportlab.platypus.paragraph import Paragraph

def firstPage(c, t):
        pass

def laterPages(c, t):
        pass

f = []
gs = getSampleStyleSheet()
s = gs['Normal']
text = '<a href="#CHAPTER">CHAPTER</a>\n'
text2 = '<a name="CHAPTER" />'

f.append(Paragraph(text, s) )
f.append(Paragraph(text2, s) )

t = SimpleDocTemplate('o.pdf')
t.build(f, onFirstPage=firstPage, onLaterPages=laterPages)
-----------------------------------------------------------------------------

This fails with:

  File "............./reportlab/pdfbase/pdfdoc.py", line 1526, in format
    if f is None: raise ValueError, "format not resolved %s" % self.name
ValueError: format not resolved CHAPTER


However, if both <a> tags are inside the same Paragraph(), it works.
(that is, text and text2 are appended into same string 
and used in the same Paragraph.)


> There's a test case usage in test/test_platypus_paragraphs.py (see the output 

> file test_platypus_paragraphs_ul.pdf). There are two jumps at the beginning and 

> two anchors at the end. If you zoom up the document you should be able to see if 

> the jump is right for your.


I tried to use those and managed to build the particular test chapter 
where those are in separate Paragraphs and it works fine there. 

What could cause this 'format not resolved' error?


BR,

Tuju

-- 
Ajatteleva ihminen tarvitsee unta.
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