[reportlab-users] Truncate table cell content to end with ellipsis

[Robin Becker]

Yves,

if you cannot use the broken fragline stuff to locate the position where the 
text should be ended then you'll need to brute force the search. A good approach 
uses a binary search to determine where the split should occur eg

from reportlab.pdfbase.pdfmetrics import stringWidth
def locateSplit(s,maxWidth,fontName='Times-Roman',fontSize=12):
	def width(i,L=(len(s)+1)*[None]):
		if L[i] is None:
			L[i]=stringWidth(s[:i],fontName,fontSize)
		return L[i]
	def brak(lo,hi):
		i = (lo+hi)>>1
		print lo,hi,i,width(i)
		if lo==i: return lo
		if width(i)>=maxWidth:
			return brak(lo,i)
		else:
			return brak(i,hi)
	i=brak(0,len(s))
	if width(i)>maxWidth:
		i-=1
	return i, width(i),width(i+1),s[:i]

s='Hello Brave World and Goodbye'
print locateSplit(s,72).
-- 
Robin Becker