[reportlab-users] Best way forward

[Rafael Lopes]

2010/8/11 Simon <simonluijk at gmail.com>:

> On 11 August 2010 19:08, Steve Romanow <slestak989 at gmail.com> wrote:




>>> They are going to be printed on continus paper that is perferated every

>>> 20cm. If a invoice is too large to fit on one page it should continue

onto

>>> the second page as if it is the same piece of paper. e.g. the second

page

>>> should not have a header. I think it would be easer to create one large

page

>>> (40cm high) rather then two seperate ones. Is it posible to create a pdf

>>> page (PageTemplate) with a flexable height? or change the height if I

>>> calculate that the flowables wont fit (Most likely be one table per

>>> invoice).


You can cycle through two PageTemplates. A first PageTemplate with a frame
with 20 cm on top and  a second one with a Frame
on bottom. The first also draws a header and the second don't.






>>>

>>> Here comes the wedge: There is a piece of text that has to come below

the

>>> invoice item table. If the pdf needs to be printed on two pages it

should

>>> not get printed on the bottom of the first page but the second.

>>>

>>> Is it posible to wrap two flowables in a flowable that can not be split?


You can use the KeepTogether flowable.





>>> My other question is: Is it posible when a PageTemplate is drawing the

>>> static elements on the page to grab information from the first flowable

to

>>> be drawn on that page. Related to that is it posible to store extra data

in

>>> a flowable.


Yes you can store whatever you want to in  a flowable that you implement.

You can also insert a NextPageTemplate before a special flowable. You can
store some data in doctemplate.
Like the current header text. Just implement a DocTemplate with you
information, and get it on the beforePageDraw of
Page template. Something like:

class SpecialDocTemplate(DocTemplate)
   def afterInit(self):
      self.my_special_data = None










But before you implement  You can change the PageTemplate with a
NextPageTemplate flowable.






>> I don't have a specific RL answer for you, however, I have had to handle

>> this with some other products so lets just talk concepts.  I will need to

>> tackle this one day in RL (I hope, if my company purchases).

>>

>> You need 4 layouts, Single, First, Middle, Last.

>>

>> Single will have Header, Detail Footer

>> First will have Header and Detail

>> Middle will only have Detail (maybe a mini header, but different than

>> First)

>> Last will have Detail and Footer

>

>  Yes that is good, I think I could get that to work in Reportlab. I think

> having seperate pages is better as then a table row wont get printed on

the

> perferation line between two pages.

>

> The only dificutly I think I will have is working out which PageTemplate

to

> use, especily when I am creating more then one invoice. I will have a

crack

> at it tomorrow.

>

> Thanks again

>

> Simon Luijk

>

>

>>

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>




-- 
--
Rafael Lopes
(11) 6729-1897
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