def _push_dvistring(self, dvi, fonts, afterpos, fontsize, fontmap):
""" push dvi string with defined fonts on top of reader
stack. Every positions gets scaled relatively by the factor
scale. After interpretating the dvi chunk, continue with self.pos=afterpos.
The designsize of the virtual font is passed as a fix_word
"""
#if self.debug:
# self.debugfile.write("executing new dvi chunk\n")
self.debugstack.append(self.debug)
self.debug = 0
self.statestack.append((self.file, self.fonts, self.activefont, afterpos, self.stack, self.scale))
# units in vf files are relative to the size of the font and given as fix_words
# which can be converted to floats by diving by 2**20.
# This yields the following scale factor for the height and width of rects:
self.scale = fontsize/2**20/self.pyxconv
self.file = reader.bytesreader(dvi)
self.fonts = fonts
self.stack = []
self.filepos = 0
self.usefont(0, 0, fontmap)
def _push_dvistring(self, dvi, fonts, afterpos, fontsize, fontmap):
""" push dvi string with defined fonts on top of reader
stack. Every positions gets scaled relatively by the factor
scale. After interpretating the dvi chunk, continue with self.pos=afterpos.
The designsize of the virtual font is passed as a fix_word
"""
#if self.debug:
# self.debugfile.write("executing new dvi chunk\n")
self.debugstack.append(self.debug)
self.debug = 0
self.statestack.append((self.file, self.fonts, self.activefont,
afterpos, self.stack, self.scale))
# units in vf files are relative to the size of the font and given as fix_words
# which can be converted to floats by diving by 2**20.
# This yields the following scale factor for the height and width of rects:
self.scale = fontsize / 2**20 / self.pyxconv
self.file = reader.bytesreader(dvi)
self.fonts = fonts
self.stack = []
self.filepos = 0
self.usefont(0, 0, fontmap)
def __init__(self, file, debug=0):
with reader.bytesreader(file.read()) as file:
#
# read pre header
#
self.lf = file.readint16()
self.lh = file.readint16()
self.bc = file.readint16()
self.ec = file.readint16()
self.nw = file.readint16()
self.nh = file.readint16()
self.nd = file.readint16()
self.ni = file.readint16()
self.nl = file.readint16()
self.nk = file.readint16()
self.ne = file.readint16()
self.np = file.readint16()
if not (self.bc-1 <= self.ec <= 255 and
self.ne <= 256 and
self.lf == 6+self.lh+(self.ec-self.bc+1)+self.nw+self.nh+self.nd
+self.ni+self.nl+self.nk+self.ne+self.np):
raise RuntimeError("error in TFM pre-header")
if debug:
print("lh=%d" % self.lh)
#
# read header
#
self.checksum = file.readint32()
self.designsize = file.readint32()
assert self.designsize > 0, "invald design size"
if self.lh > 2:
assert self.lh > 11, "inconsistency in TFM file: incomplete field"
self.charcoding = file.readstring(40)
else:
self.charcoding = None
if self.lh > 12:
assert self.lh > 16, "inconsistency in TFM file: incomplete field"
self.fontfamily = file.readstring(20)
else:
self.fontfamily = None
if debug:
print("(FAMILY %s)" % self.fontfamily)
print("(CODINGSCHEME %s)" % self.charcoding)
print("(DESINGSIZE R %f)" % (16.0*self.designsize/16777216))
if self.lh > 17:
self.sevenbitsave = file.readuchar()
# ignore the following two bytes
file.readint16()
facechar = file.readuchar()
# decode ugly face specification into the Knuth suggested string
if facechar < 18:
if facechar >= 12:
self.face = "E"
facechar -= 12
elif facechar >= 6:
self.face = "C"
facechar -= 6
else:
self.face = "R"
if facechar >= 4:
self.face = "L" + self.face
facechar -= 4
elif facechar >= 2:
self.face = "B" + self.face
facechar -= 2
else:
self.face = "M" + self.face
if facechar == 1:
self.face = self.face[0] + "I" + self.face[1]
else:
self.face = self.face[0] + "R" + self.face[1]
else:
self.face = None
else:
self.sevenbitsave = self.face = None
if self.lh > 18:
# just ignore the rest
print(file.read((self.lh-18)*4))
#
# read char_info
#
self.char_info = [None]*(self.ec+1)
for charcode in range(self.bc, self.ec+1):
self.char_info[charcode] = char_info_word(file.readint32())
if self.char_info[charcode].width_index == 0:
# disable character if width_index is zero
self.char_info[charcode] = None
#
# read widths
#
self.width = [None for width_index in range(self.nw)]
for width_index in range(self.nw):
self.width[width_index] = file.readint32()
#
# read heights
#
self.height = [None for height_index in range(self.nh)]
for height_index in range(self.nh):
self.height[height_index] = file.readint32()
#
# read depths
#
self.depth = [None for depth_index in range(self.nd)]
for depth_index in range(self.nd):
self.depth[depth_index] = file.readint32()
#
# read italic
#
self.italic = [None for italic_index in range(self.ni)]
for italic_index in range(self.ni):
self.italic[italic_index] = file.readint32()
#
# read lig_kern
#
# XXX decode to lig_kern_command
self.lig_kern = [None for lig_kern_index in range(self.nl)]
for lig_kern_index in range(self.nl):
self.lig_kern[lig_kern_index] = file.readint32()
#
# read kern
#
self.kern = [None for kern_index in range(self.nk)]
for kern_index in range(self.nk):
self.kern[kern_index] = file.readint32()
#
# read exten
#
# XXX decode to extensible_recipe
self.exten = [None for exten_index in range(self.ne)]
for exten_index in range(self.ne):
self.exten[exten_index] = file.readint32()
#
# read param
#
# XXX decode
self.param = [None for param_index in range(self.np)]
for param_index in range(self.np):
self.param[param_index] = file.readint32()
def __init__(self, file, scale, tfmconv, pyxconv, debug=0):
self.scale = scale
self.tfmconv = tfmconv
self.pyxconv = pyxconv
self.debug = debug
self.fonts = {} # used fonts
self.widths = {} # widths of defined chars
self.chardefs = {} # dvi chunks for defined chars
afile = reader.bytesreader(file.read())
cmd = afile.readuchar()
if cmd == _VF_PRE:
if afile.readuchar() != _VF_ID: raise VFError
comment = afile.read(afile.readuchar())
self.cs = afile.readuint32()
self.ds = afile.readuint32()
else:
raise VFError
while True:
cmd = afile.readuchar()
if cmd >= _VF_FNTDEF1234 and cmd < _VF_FNTDEF1234 + 4:
# font definition
if cmd == _VF_FNTDEF1234:
num = afile.readuchar()
elif cmd == _VF_FNTDEF1234 + 1:
num = afile.readuint16()
elif cmd == _VF_FNTDEF1234 + 2:
num = afile.readuint24()
elif cmd == _VF_FNTDEF1234 + 3:
num = afile.readint32()
c = afile.readint32()
s = afile.readint32(
) # relative scaling used for font (fix_word)
d = afile.readint32() # design size of font
fontname = afile.read(afile.readuchar() +
afile.readuchar()).decode("ascii")
# rescaled size of font: s is relative to the scaling
# of the virtual font itself. Note that realscale has
# to be a fix_word (like s)
# XXX: check rounding
reals = int(round(self.scale * (16 * self.ds / 16777216) * s))
# print ("defining font %s -- VF scale: %g, VF design size: %d, relative font size: %d => real size: %d" %
# (fontname, self.scale, self.ds, s, reals)
# )
# XXX allow for virtual fonts here too
from . import texfont
self.fonts[num] = texfont.TeXfont(fontname, c, reals, d,
self.tfmconv, self.pyxconv,
self.debug > 1)
elif cmd == _VF_LONG_CHAR:
# character packet (long form)
pl = afile.readuint32() # packet length
cc = afile.readuint32(
) # char code (assumed unsigned, but anyhow only 0 <= cc < 255 is actually used)
tfm = afile.readuint24() # character width
dvi = afile.read(pl) # dvi code of character
self.widths[cc] = tfm
self.chardefs[cc] = dvi
elif cmd < _VF_LONG_CHAR:
# character packet (short form)
cc = afile.readuchar() # char code
tfm = afile.readuint24() # character width
dvi = afile.read(cmd)
self.widths[cc] = tfm
self.chardefs[cc] = dvi
elif cmd == _VF_POST:
break
else:
raise VFError
def __init__(self, file, debug=0):
with reader.bytesreader(file.read()) as file:
#
# read pre header
#
self.lf = file.readint16()
self.lh = file.readint16()
self.bc = file.readint16()
self.ec = file.readint16()
self.nw = file.readint16()
self.nh = file.readint16()
self.nd = file.readint16()
self.ni = file.readint16()
self.nl = file.readint16()
self.nk = file.readint16()
self.ne = file.readint16()
self.np = file.readint16()
if not (self.bc-1 <= self.ec <= 255 and
self.ne <= 256 and
self.lf == 6+self.lh+(self.ec-self.bc+1)+self.nw+self.nh+self.nd
+self.ni+self.nl+self.nk+self.ne+self.np):
raise RuntimeError("error in TFM pre-header")
if debug:
print("lh=%d" % self.lh)
#
# read header
#
self.checksum = file.readint32()
self.designsize = file.readint32()
assert self.designsize > 0, "invald design size"
if self.lh > 2:
assert self.lh > 11, "inconsistency in TFM file: incomplete field"
self.charcoding = file.readstring(40)
else:
self.charcoding = None
if self.lh > 12:
assert self.lh > 16, "inconsistency in TFM file: incomplete field"
self.fontfamily = file.readstring(20)
else:
self.fontfamily = None
if debug:
print("(FAMILY %s)" % self.fontfamily)
print("(CODINGSCHEME %s)" % self.charcoding)
print("(DESINGSIZE R %f)" % (16.0*self.designsize/16777216))
if self.lh > 17:
self.sevenbitsave = file.readuchar()
# ignore the following two bytes
file.readint16()
facechar = file.readuchar()
# decode ugly face specification into the Knuth suggested string
if facechar < 18:
if facechar >= 12:
self.face = "E"
facechar -= 12
elif facechar >= 6:
self.face = "C"
facechar -= 6
else:
self.face = "R"
if facechar >= 4:
self.face = "L" + self.face
facechar -= 4
elif facechar >= 2:
self.face = "B" + self.face
facechar -= 2
else:
self.face = "M" + self.face
if facechar == 1:
self.face = self.face[0] + "I" + self.face[1]
else:
self.face = self.face[0] + "R" + self.face[1]
else:
self.face = None
else:
self.sevenbitsave = self.face = None
if self.lh > 18:
# just ignore the rest
print(file.read((self.lh-18)*4))
#
# read char_info
#
self.char_info = [None]*(self.ec+1)
for charcode in range(self.bc, self.ec+1):
self.char_info[charcode] = char_info_word(file.readint32())
if self.char_info[charcode].width_index == 0:
# disable character if width_index is zero
self.char_info[charcode] = None
#
# read widths
#
self.width = [None for width_index in range(self.nw)]
for width_index in range(self.nw):
self.width[width_index] = file.readint32()
#
# read heights
#
self.height = [None for height_index in range(self.nh)]
for height_index in range(self.nh):
self.height[height_index] = file.readint32()
#
# read depths
#
self.depth = [None for depth_index in range(self.nd)]
for depth_index in range(self.nd):
self.depth[depth_index] = file.readint32()
#
# read italic
#
self.italic = [None for italic_index in range(self.ni)]
for italic_index in range(self.ni):
self.italic[italic_index] = file.readint32()
#
# read lig_kern
#
# XXX decode to lig_kern_command
self.lig_kern = [None for lig_kern_index in range(self.nl)]
for lig_kern_index in range(self.nl):
self.lig_kern[lig_kern_index] = file.readint32()
#
# read kern
#
self.kern = [None for kern_index in range(self.nk)]
for kern_index in range(self.nk):
self.kern[kern_index] = file.readint32()
#
# read exten
#
# XXX decode to extensible_recipe
self.exten = [None for exten_index in range(self.ne)]
for exten_index in range(self.ne):
self.exten[exten_index] = file.readint32()
#
# read param
#
# XXX decode
self.param = [None for param_index in range(self.np)]
for param_index in range(self.np):
self.param[param_index] = file.readint32()
def __init__(self, file, scale, tfmconv, pyxconv, debug=0):
self.scale = scale
self.tfmconv = tfmconv
self.pyxconv = pyxconv
self.debug = debug
self.fonts = {} # used fonts
self.widths = {} # widths of defined chars
self.chardefs = {} # dvi chunks for defined chars
afile = reader.bytesreader(file.read())
cmd = afile.readuchar()
if cmd == _VF_PRE:
if afile.readuchar() != _VF_ID: raise VFError
comment = afile.read(afile.readuchar())
self.cs = afile.readuint32()
self.ds = afile.readuint32()
else:
raise VFError
while True:
cmd = afile.readuchar()
if cmd >= _VF_FNTDEF1234 and cmd < _VF_FNTDEF1234 + 4:
# font definition
if cmd == _VF_FNTDEF1234:
num = afile.readuchar()
elif cmd == _VF_FNTDEF1234+1:
num = afile.readuint16()
elif cmd == _VF_FNTDEF1234+2:
num = afile.readuint24()
elif cmd == _VF_FNTDEF1234+3:
num = afile.readint32()
c = afile.readint32()
s = afile.readint32() # relative scaling used for font (fix_word)
d = afile.readint32() # design size of font
fontname = afile.read(afile.readuchar() + afile.readuchar()).decode("ascii")
# rescaled size of font: s is relative to the scaling
# of the virtual font itself. Note that realscale has
# to be a fix_word (like s)
# XXX: check rounding
reals = int(round(self.scale * (16*self.ds/16777216) * s))
# print ("defining font %s -- VF scale: %g, VF design size: %d, relative font size: %d => real size: %d" %
# (fontname, self.scale, self.ds, s, reals)
# )
from pyx import config
from . import texfont
try:
with config.open(fontname, [config.format.vf]) as fontfile:
self.fonts[num] = texfont.virtualfont(fontname, fontfile, c, reals, d, self.tfmconv, self.pyxconv, self.debug>1)
except EnvironmentError:
self.fonts[num] = texfont.TeXfont(fontname, c, reals, d, self.tfmconv, self.pyxconv, self.debug>1)
elif cmd == _VF_LONG_CHAR:
# character packet (long form)
pl = afile.readuint32() # packet length
cc = afile.readuint32() # char code (assumed unsigned, but anyhow only 0 <= cc < 255 is actually used)
tfm = afile.readuint24() # character width
dvi = afile.read(pl) # dvi code of character
self.widths[cc] = tfm
self.chardefs[cc] = dvi
elif cmd < _VF_LONG_CHAR:
# character packet (short form)
cc = afile.readuchar() # char code
tfm = afile.readuint24() # character width
dvi = afile.read(cmd)
self.widths[cc] = tfm
self.chardefs[cc] = dvi
elif cmd == _VF_POST:
break
else:
raise VFError