[reportlab-users] Best way forward

[Simon]

Thank you for the tips, between them and me discovering ActionFlowable I
think
I will be able to complete it. Yes, I will probably blog it.

Simon

On 12 August 2010 04:44, Rafael Lopes <rafael at whitehat.com.br> wrote:


>

> 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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> >

> >

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> >

> >

>

>

>

> --

> --

> Rafael Lopes

> (11) 6729-1897

>

>

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>

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