[reportlab-users] Experimenting with new paragraphs, splitting issue

[Dinu Gherman]

Robin Becker:


> We try to wrap a height 40 paragraph in available height 30. That  

> fails, but the split cannot reduce the height. We flip to the next  

> frame (also with available height 30) and try again; that fails so  

> we give up. You probably wonder why we won't split into two lines.  

> That is a hack in Paragraph.py where we always fail to split if  

> trying to return a first split with only one line in. The intention  

> is to avoid an orphan. If you intend to split lines into frames with  

> only one line in them we need a different concept of layout.


I've modified my sample code to produce two lines per frame.
The traceback I get i the same with the same wrap height value
of 4.00, which I cannot make any sense of:

*** parse on_line_1 on_line_1 on_line_2 on_line_2 on_line_3
*** wrap (240.000000, 50.000000)
*** wrap (240.000000, 60.000000) needed
*** parse on_line_1 on_line_1 on_line_2 on_line_2 on_line_3
*** split (240.000000, 50.000000)
p1 on_line_1 on_line_1 on_line_2 on_line_2
p2 on_line_3
*** parse on_line_1 on_line_1 on_line_2 on_line_2
*** wrap (240.000000, 50.000000)
*** wrap (240.000000, 40.000000) needed
*** parse on_line_3
*** wrap (240.000000, 4.000000)
*** wrap (240.000000, 20.000000) needed
*** parse on_line_3
*** split (240.000000, 4.000000)
p1
p2 on_line_3
*** parse
*** wrap (240.000000, 4.000000)
*** wrap (240.000000, 20.000000) needed
Traceback (most recent call last):
   File "test_twoframes.py", line 49, in <module>
     main()
   File "test_twoframes.py", line 45, in main
     doc.build(story)
   File "/usr/local/lib/python2.5/site-packages/reportlab/platypus/ 
doctemplate.py", line 740, in build
     self.handle_flowable(flowables)
   File "/usr/local/lib/python2.5/site-packages/reportlab/platypus/ 
doctemplate.py", line 663, in handle_flowable
     raise LayoutError(ident)
reportlab.platypus.doctemplate.LayoutError: Splitting error(n==2) on  
page 1 in
<Paragraph at 0x10f5da0 frame=F1>on_line_3

I've attached my new code...

Dinu

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