def _formatText(self, text):
"Generates PDF text output operator(s)"
# Use pyfribidi to write the text in the correct visual order.
directions = {'LTR': DIR_LTR, 'RTL': DIR_RTL}
text = log2vis(
text, directions.get(self.direction, DIR_ON), reordernsm=False)
text = remove_noprint(text)
canv = self._canvas
font = pdfmetrics.getFont(self._fontname)
R = []
if font._dynamicFont:
#it's a truetype font and should be utf8. If an error is raised,
for subset, t in font.splitString(text, canv._doc):
if subset != self._curSubset:
pdffontname = font.getSubsetInternalName(subset, canv._doc)
R.append(
"%s %s Tf %s TL" % (pdffontname, fp_str(
self._fontsize), fp_str(self._leading)))
self._curSubset = subset
R.append("(%s) Tj" % canv._escape(t))
elif font._multiByte:
#all the fonts should really work like this - let them know more about PDF...
R.append("%s %s Tf %s TL" % (canv._doc.getInternalFontName(
font.fontName), fp_str(self._fontsize), fp_str(self._leading)))
R.append("(%s) Tj" % font.formatForPdf(text))
else:
#convert to T1 coding
fc = font
if not isinstance(text, unicode):
try:
text = text.decode('utf8')
except UnicodeDecodeError, e:
i, j = e.args[2:4]
raise UnicodeDecodeError(
*(e.args[:4] + ('%s\n%s-->%s<--%s' %
(e.args[4], text[max(i - 10, 0):i],
text[i:j], text[j:j + 10]), )))
for f, t in pdfmetrics.unicode2T1(text,
[font] + font.substitutionFonts):
if f != fc:
R.append("%s %s Tf %s TL" % (canv._doc.getInternalFontName(
f.fontName), fp_str(self._fontsize),
fp_str(self._leading)))
fc = f
R.append("(%s) Tj" % canv._escape(t))
if font != fc:
R.append("%s %s Tf %s TL" % (canv._doc.getInternalFontName(
self._fontname), fp_str(self._fontsize),
fp_str(self._leading)))
def stringWidth(text, fontName, fontSize, encoding='utf8'):
"""Compute width of string in points;
not accelerated as fast enough because of _instanceStringWidthU"""
text = log2vis(text, DIR_RTL if rl_config.rtl else DIR_LTR)
text = remove_noprint(text)
return getFont(fontName).stringWidth(text, fontSize, encoding=encoding)
