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