def runHB(direction, script, language, features, text, fontname, positions):
font = getHbFont(fontname)
buf = HarfBuzz.buffer_create()
text = toUnicode(text)
HarfBuzz.buffer_add_utf8(buf, text.encode('utf-8'), 0, -1)
HarfBuzz.buffer_set_direction(buf, HarfBuzz.direction_from_string(toBytes(direction)))
HarfBuzz.buffer_set_script(buf, HarfBuzz.script_from_string(toBytes(script)))
if language:
HarfBuzz.buffer_set_language(buf, HarfBuzz.language_from_string(toBytes(language)))
if features:
features = [HarfBuzz.feature_from_string(toBytes(fea))[1] for fea in features.split(',')]
else:
features = []
HarfBuzz.shape(font, buf, features)
info = HarfBuzz.buffer_get_glyph_infos(buf)
ttfont = getTtFont(fontname)
if positions:
pos = HarfBuzz.buffer_get_glyph_positions(buf)
glyphs = []
for i, p in zip(info, pos):
glyph = ttfont.getGlyphName(i.codepoint)
if p.x_offset or p.y_offset:
glyph += "@%d,%d" % (p.x_offset, p.y_offset)
glyph += "+%d" % p.x_advance
if p.y_advance:
glyph += ",%d" % p.y_advance
glyphs.append(glyph)
out = "|".join(glyphs)
else:
out = "|".join([ttfont.getGlyphName(i.codepoint) for i in info])
return "[%s]" % out
def runHB(text, buf, font, ttfont):
HarfBuzz.buffer_clear_contents(buf)
HarfBuzz.buffer_add_utf8(buf, text.encode('utf-8'), 0, -1)
HarfBuzz.buffer_set_direction(buf, HarfBuzz.direction_t.RTL)
HarfBuzz.buffer_set_script(buf, HarfBuzz.script_t.ARABIC)
HarfBuzz.buffer_set_language(buf, HarfBuzz.language_from_string(b"ar"))
HarfBuzz.shape(font, buf, [])
info = HarfBuzz.buffer_get_glyph_infos(buf)
out = "|".join([ttfont.getGlyphName(i.codepoint) for i in info])
return "[%s]" % out
def shape(text, font):
text = toUnicode(text)
buf = HarfBuzz.buffer_create()
HarfBuzz.buffer_add_utf8(buf, text.encode('utf-8'), 0, -1)
HarfBuzz.buffer_set_direction(buf, HarfBuzz.direction_t.RTL)
HarfBuzz.buffer_set_script(buf, HarfBuzz.script_t.ARABIC)
HarfBuzz.buffer_set_language(buf, HarfBuzz.language_from_string("ar"))
HarfBuzz.shape(font, buf, [HarfBuzz.feature_from_string("+ss01")[1]])
glyphs = HarfBuzz.buffer_get_glyph_infos(buf)
positions = HarfBuzz.buffer_get_glyph_positions(buf)
return [(g.codepoint, p.x_advance, p.x_offset, p.y_offset) for g, p in zip(glyphs, positions)]
def shape(text, font):
text = toUnicode(text)
buf = HarfBuzz.buffer_create()
HarfBuzz.buffer_add_utf8(buf, text.encode('utf-8'), 0, -1)
HarfBuzz.buffer_set_direction(buf, HarfBuzz.direction_t.RTL)
HarfBuzz.buffer_set_script(buf, HarfBuzz.script_t.ARABIC)
HarfBuzz.buffer_set_language(buf, HarfBuzz.language_from_string("ar"))
HarfBuzz.shape(font, buf, [HarfBuzz.feature_from_string("+ss01")[1]])
glyphs = HarfBuzz.buffer_get_glyph_infos(buf)
positions = HarfBuzz.buffer_get_glyph_positions(buf)
return [(g.codepoint, p.x_advance, p.x_offset, p.y_offset)
for g, p in zip(glyphs, positions)]
def runHB(text, buf, font, ttfont):
HarfBuzz.buffer_clear_contents(buf)
HarfBuzz.buffer_add_utf8(buf, text.encode('utf-8'), 0, -1)
HarfBuzz.buffer_set_direction(buf, HarfBuzz.direction_t.RTL)
HarfBuzz.buffer_set_script(buf, HarfBuzz.script_t.ARABIC)
HarfBuzz.buffer_set_language(buf, HarfBuzz.language_from_string(b"ar"))
HarfBuzz.shape(font, buf, [])
info = HarfBuzz.buffer_get_glyph_infos(buf)
positions = HarfBuzz.buffer_get_glyph_positions(buf)
out = []
for i, p in zip(info, positions):
text = ""
text += ttfont.getGlyphName(i.codepoint)
text += " w=%d" % p.x_advance
if p.x_offset:
text += " x=%d" % p.x_offset
if p.y_offset:
text += " y=%d" % p.y_offset
out.append(text)
return "[%s]" % "|".join(out)
# string indices, then this is quickest way to add text to
# buffer:
hb.buffer_add_utf8 (buf, text.encode('utf-8'), 0, -1)
# Otherwise, then following handles both narrow and wide
# Python builds (the first item in the array is BOM, so we skip it):
elif sys.maxunicode == 0x10FFFF:
hb.buffer_add_utf32 (buf, array.array('I', text.encode('utf-32'))[1:], 0, -1)
else:
hb.buffer_add_utf16 (buf, array.array('H', text.encode('utf-16'))[1:], 0, -1)
hb.buffer_guess_segment_properties (buf)
if ((hb.buffer_get_script(buf) == hb.script_t.MONGOLIAN) or (hb.buffer_get_script(buf) == hb.script_t.PHAGS_PA)):
wantRotate = True
if (hb.buffer_get_script(buf) == hb.script_t.HAN):
hb.buffer_set_direction(buf, hb.direction_t.TTB)
wantTTB = True
hb.shape (font, buf, [])
font_extents = hb.font_get_extents_for_direction(font, hb.buffer_get_direction(buf))
font_height = font_extents.ascender - font_extents.descender + font_extents.line_gap
infos = hb.buffer_get_glyph_infos (buf)
positions = hb.buffer_get_glyph_positions (buf)
x = 0
y = 0
glyph_extents = list()
min_ix = upem
max_ix = -upem
min_iy = upem
