def _get_ps_font_and_encoding(texname):
tex_font_map = dviread.PsfontsMap(dviread.find_tex_file('pdftex.map'))
font_bunch = tex_font_map[texname]
if font_bunch.filename is None:
raise ValueError(("No usable font file found for %s (%s). "
"The font may lack a Type-1 version.") %
(font_bunch.psname, texname))
font = get_font(font_bunch.filename)
for charmap_name, charmap_code in [("ADOBE_CUSTOM", 1094992451),
("ADOBE_STANDARD", 1094995778)]:
try:
font.select_charmap(charmap_code)
except (ValueError, RuntimeError):
pass
else:
break
else:
charmap_name = ""
warnings.warn("No supported encoding in font (%s)." %
font_bunch.filename)
if charmap_name == "ADOBE_STANDARD" and font_bunch.encoding:
enc0 = dviread.Encoding(font_bunch.encoding)
enc = {
i: _get_adobe_standard_encoding().get(c, None)
for i, c in enumerate(enc0.encoding)
}
else:
enc = {}
return font, enc
def _get_adobe_standard_encoding(self):
enc_name = dviread.find_tex_file('8a.enc')
enc = dviread.Encoding(enc_name)
return dict([(c, i) for i, c in enumerate(enc.encoding)])
def get_glyphs_tex(self, prop, s, glyph_map=None,
return_new_glyphs_only=False):
"""
convert the string *s* to vertices and codes using matplotlib's usetex mode.
"""
# codes are modstly borrowed from pdf backend.
texmanager = self.get_texmanager()
if self.tex_font_map is None:
self.tex_font_map = dviread.PsfontsMap(dviread.find_tex_file('pdftex.map'))
if self._adobe_standard_encoding is None:
self._adobe_standard_encoding = self._get_adobe_standard_encoding()
fontsize = prop.get_size_in_points()
if hasattr(texmanager, "get_dvi"): #
dvifilelike = texmanager.get_dvi(s, self.FONT_SCALE)
dvi = dviread.DviFromFileLike(dvifilelike, self.DPI)
else:
dvifile = texmanager.make_dvi(s, self.FONT_SCALE)
dvi = dviread.Dvi(dvifile, self.DPI)
try:
page = next(iter(dvi))
finally:
dvi.close()
if glyph_map is None:
glyph_map = dict()
if return_new_glyphs_only:
glyph_map_new = dict()
else:
glyph_map_new = glyph_map
glyph_ids, xpositions, ypositions, sizes = [], [], [], []
# Gather font information and do some setup for combining
# characters into strings.
#oldfont, seq = None, []
for x1, y1, dvifont, glyph, width in page.text:
font_and_encoding = self._ps_fontd.get(dvifont.texname)
font_bunch = self.tex_font_map[dvifont.texname]
if font_and_encoding is None:
font = FT2Font(str(font_bunch.filename))
for charmap_name, charmap_code in [("ADOBE_CUSTOM", 1094992451),
("ADOBE_STANDARD", 1094995778)]:
try:
font.select_charmap(charmap_code)
except ValueError:
pass
else:
break
else:
charmap_name = ""
warnings.warn("No supported encoding in font (%s)." % font_bunch.filename)
if charmap_name == "ADOBE_STANDARD" and font_bunch.encoding:
enc0 = dviread.Encoding(font_bunch.encoding)
enc = dict([(i, self._adobe_standard_encoding.get(c, None)) \
for i, c in enumerate(enc0.encoding)])
else:
enc = dict()
self._ps_fontd[dvifont.texname] = font, enc
else:
font, enc = font_and_encoding
ft2font_flag = LOAD_TARGET_LIGHT
char_id = self._get_char_id_ps(font, glyph)
if not char_id in glyph_map:
font.clear()
font.set_size(self.FONT_SCALE, self.DPI)
if enc: charcode = enc.get(glyph, None)
else: charcode = glyph
if charcode:
glyph0 = font.load_char(charcode, flags=ft2font_flag)
else:
warnings.warn("The glyph (%d) of font (%s) cannot be converted with the encoding. Glyph may be wrong" % (glyph, font_bunch.filename))
glyph0 = font.load_char(glyph, flags=ft2font_flag)
glyph_map_new[char_id] = self.glyph_to_path(font)
glyph_ids.append(char_id)
xpositions.append(x1)
ypositions.append(y1)
sizes.append(dvifont.size/self.FONT_SCALE)
myrects = []
for ox, oy, h, w in page.boxes:
vert1=[(ox, oy), (ox+w, oy), (ox+w, oy+h), (ox, oy+h), (ox, oy), (0,0)]
code1 = [Path.MOVETO,
Path.LINETO, Path.LINETO, Path.LINETO, Path.LINETO,
Path.CLOSEPOLY]
myrects.append((vert1, code1))
return zip(glyph_ids, xpositions, ypositions, sizes), \
glyph_map_new, myrects
def _get_adobe_standard_encoding():
enc_name = dviread.find_tex_file('8a.enc')
enc = dviread.Encoding(enc_name)
return {c: i for i, c in enumerate(enc.encoding)}
def get_glyphs_tex(self,
prop,
s,
glyph_map=None,
return_new_glyphs_only=False):
"""
convert the string *s* to vertices and codes using matplotlib's usetex mode.
"""
# codes are modstly borrowed from pdf backend.
texmanager = self.get_texmanager()
if self.tex_font_map is None:
self.tex_font_map = dviread.PsfontsMap(
dviread.find_tex_file('pdftex.map'))
fontsize = prop.get_size_in_points()
if hasattr(texmanager, "get_dvi"): #
dvifilelike = texmanager.get_dvi(s, self.FONT_SCALE)
dvi = dviread.DviFromFileLike(dvifilelike, self.DPI)
else:
dvifile = texmanager.make_dvi(s, self.FONT_SCALE)
dvi = dviread.Dvi(dvifile, self.DPI)
page = iter(dvi).next()
dvi.close()
if glyph_map is None:
glyph_map = dict()
if return_new_glyphs_only:
glyph_map_new = dict()
else:
glyph_map_new = glyph_map
glyph_ids, xpositions, ypositions, sizes = [], [], [], []
# Gather font information and do some setup for combining
# characters into strings.
#oldfont, seq = None, []
for x1, y1, dvifont, glyph, width in page.text:
font_and_encoding = self._ps_fontd.get(dvifont.texname)
if font_and_encoding is None:
font_bunch = self.tex_font_map[dvifont.texname]
font = FT2Font(str(font_bunch.filename))
try:
font.select_charmap(1094992451) # select ADOBE_CUSTOM
except ValueError:
font.set_charmap(0)
if font_bunch.encoding:
enc = dviread.Encoding(font_bunch.encoding)
else:
enc = None
self._ps_fontd[dvifont.texname] = font, enc
else:
font, enc = font_and_encoding
ft2font_flag = LOAD_TARGET_LIGHT
char_id = self._get_char_id_ps(font, glyph)
if not char_id in glyph_map:
font.clear()
font.set_size(self.FONT_SCALE, self.DPI)
glyph0 = font.load_char(glyph, flags=ft2font_flag)
glyph_map_new[char_id] = self.glyph_to_path(glyph0)
glyph_ids.append(char_id)
xpositions.append(x1)
ypositions.append(y1)
sizes.append(dvifont.size / self.FONT_SCALE)
myrects = []
for ox, oy, h, w in page.boxes:
vert1 = [(ox, oy), (ox + w, oy), (ox + w, oy + h), (ox, oy + h),
(ox, oy), (0, 0)]
code1 = [
Path.MOVETO, Path.LINETO, Path.LINETO, Path.LINETO,
Path.LINETO, Path.CLOSEPOLY
]
myrects.append((vert1, code1))
return zip(glyph_ids, xpositions, ypositions, sizes), \
glyph_map_new, myrects
