Page break created for each table for some fonts when vertical_padding is small #19
Description
Reported by Simon Hürlimann:
There's some regression in drawing tables.
When using a small vertical_padding (like 0 or 1), a page break is inserted after each cell. Cell borders are on the previous page than the content, though.
It looks like the commit to prawn-core 63dd5c8 (Don't let descender protrude below bounds bottom. This is a change from pre-text-overhaul functionality.) seems to have introduced this behaviour.
You may reproduce ith git versions
prawn-layout c13d2ce - Really fixing this now prawn-core 63dd5c8 - Don't let descender protrude below bounds bottom. This is a change from pre-text-overhaul functionality.
this wraps page for every cell for default font:
pdf.table([['Test', 'Val'], ['Test', 'Val']], :vertical_padding => 1)
It got somehow better during the development towards 0.7.1. The problem doesn't show anymore with the default font, but can still be triggered by some other fonts and smaller vertical_padding. I've experienced it with some proprietary TTF font called "Cholla Sans" with vertical_padding = 1. It also shows with the free TTF font "DejaVu Sans" and the built in font "Times-Roman" and vertical_padding = 0.
With
prawn-layout 0.7.1 prawn-core 0.7.1
it works for the default font, but still wraps for every cell for "Cholla" font with padding => 1 and "DejaVuSans", "Times-Roman" with padding => 0:
pdf.font('Times-Roman') pdf.table([['Test', 'Val'], ['Test', 'Val']], :vertical_padding => 0)
Minimal reproducing example:
require 'prawn/core'
require 'prawn/layout'
pdf = Prawn::Document.new
pdf.font('Times-Roman')
pdf.table([['Test', 'Val'], ['Test', 'Val']], :vertical_padding => 0)
pdf.render_file('test.pdf')