[reportlab-users] Reducing the margin of a table

[Robin Becker]

Claudio Battaglino wrote:
> Hi,
> I'd like to generate a page with a single table with margin = 0.
> That is the table should fill all the page.
> I tried it and the result is in the attachment.
> As you can see I don't have a null margin and between the table and the
> border of the page I've an empty space.
> How can I have a table that fills all the page?
> 
......
Unfortunately for reasons bets know only to an earlier iteration of myself it 
seems that Frames come with a built in set of paddings and in SimpleDcocTemplate 
there's no easy way to get at them. A way round that is to define your own class 
and fix up the paddings prior to use eg

##########
from reportlab.platypus import SimpleDocTemplate, Table, TableStyle, Paragraph
from reportlab.lib.units import cm
from reportlab.lib import colors
PAGE_WIDTH = 5.5 * cm
PAGE_HEIGHT = 2.2 * cm

t = Table([['This is a single cell table']],
                 colWidths=PAGE_WIDTH,rowHeights=PAGE_HEIGHT,
                  style=TableStyle([
                         ('VALIGN',(0,0),(-1,-1),'BOTTOM'),
                         ('ALIGN',(0,0),(-1,-1),'LEFT'),
                         ('LEFTPADDING',(0,0),(-1,-1), 0),
                         ('RIGHTPADDING',(0,0),(-1,-1), 0),
                         ('BACKGROUND', (0,0), (-1,-1), colors.pink),
                         ('BOX',(0,0),(-1,-1), 0.1, colors.blue),
                         ],
                     ),
                  )
class MySimpleDocTemplate(SimpleDocTemplate):
     def addPageTemplates(self,pageTemplates):
         '''fix up the one and only Frame'''
         if pageTemplates:
             f = pageTemplates[0].frames[0]
             f._leftPadding=f._rightPadding=f._topPadding=f._bottomPadding=0
             #f._reset()
             f._geom()
         SimpleDocTemplate.addPageTemplates(self,pageTemplates)

MySimpleDocTemplate('tt.pdf',
             pagesize=(PAGE_WIDTH, PAGE_HEIGHT),
             bottomMargin=0, topMargin=0, rightMargin=0, leftMargin=0,
             showBoundary=1).build([t])
########

-- 
Robin Becker