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Merge pull request #203 from jbarlow83/negative-descent 

Interpret font Descent as a negative number even if specified as positive
pull/306/head
Pieter Marsman 2019-10-13 20:06:52 +02:00 committed by GitHub
parent eae70b999c 2ede124142
commit 63b2e09ac3
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 9 additions and 0 deletions
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9
pdfminer/pdffont.py
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@ -489,6 +489,13 @@ class PDFFont(object):
self.leading = num_value(descriptor.get('Leading', 0))
self.bbox = list_value(resolve_all(descriptor.get('FontBBox', (0, 0, 0, 0))))
self.hscale = self.vscale = .001
# PDF RM 9.8.1 specifies /Descent should always be a negative number.
# PScript5.dll seems to produce Descent with a positive number, but
# text analysis will be wrong if this is taken as correct. So force
# descent to negative.
if self.descent > 0:
self.descent = -self.descent
return
def __repr__(self):
@ -504,9 +511,11 @@ class PDFFont(object):
return bytearray(bytes) # map(ord, bytes)
def get_ascent(self):
"""Ascent above the baseline, in text space units"""
return self.ascent * self.vscale
def get_descent(self):
"""Descent below the baseline, in text space units; always negative"""
return self.descent * self.vscale
def get_width(self):