# -*- coding: ISO-8859-1 -*-
#
#
# Copyright (C) 2005-2006 Jrg Lehmann <joergl@users.sourceforge.net>
# Copyright (C) 2005-2006 Andr Wobst <wobsta@users.sourceforge.net>
# Copyright (C) 2007 Michael Schindler <m-schindler@users.sourceforge.net>
#
# This file is part of PyX (http://pyx.sourceforge.net/).
#
# PyX is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# PyX is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with PyX; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
import bbox, canvas, pswriter, pdfwriter
try:
enumerate([])
except NameError:
# fallback implementation for Python 2.2 and below
def enumerate(list):
return zip(xrange(len(list)), list)
class encoding:
def __init__(self, name, filename):
""" font encoding contained in filename """
self.name = name
self.filename = filename
class encodingfile:
def __init__(self, name, filename):
# XXX move the cursor to a module of its own
from font.t1font import cursor
self.name = name
encfile = open(filename, "r")
c = cursor(encfile.read(), "")
encfile.close()
# name of encoding
self.encname = c.gettoken()
token = c.gettoken()
if token != "[":
raise RuntimeError("cannot parse encoding file '%s', expecting '[' got '%s'" % (filename, token))
self.encvector = []
for i in range(256):
token = c.gettoken()
if token == "]":
raise RuntimeError("not enough charcodes in encoding file '%s'" % filename)
self.encvector.append(token)
if c.gettoken() != "]":
raise RuntimeError("too many charcodes in encoding file '%s'" % filename)
token = c.gettoken()
if token != "def":
raise RuntimeError("cannot parse encoding file '%s', expecting 'def' got '%s'" % (filename, token))
def decode(self, charcode):
return self.encvector[charcode]
def outputPS(self, file, writer):
file.write("%%%%BeginProcSet: %s\n" % self.name)
file.write("/%s\n"
"[" % self.name)
for i, glyphname in enumerate(self.encvector):
if i and not (i % 8):
file.write("\n")
else:
file.write(" ")
file.write(glyphname)
file.write(" ] def\n"
"%%EndProcSet\n")
def outputPDF(self, file, writer):
file.write("<<\n"
"/Type /Encoding\n"
"/Differences\n"
"[ 0")
for i, glyphname in enumerate(self.encvector):
if i and not (i % 8):
file.write("\n")
else:
file.write(" ")
file.write(glyphname)
file.write(" ]\n"
">>\n")
class font:
def __init__(self, basefontname, filename, encoding, slant, metric):
self.basefontname = basefontname
self.filename = filename
self.encoding = encoding
self.slant = slant # None or a float
self.metric = metric
if encoding is not None and slant is not None:
self.encname = "%s-%s" % (basefontname, encoding.name)
self.name = "%s-slant%f" % (self.encname, self.slant)
elif encoding is not None:
self.name = "%s-%s" % (basefontname, encoding.name)
elif slant is not None:
self.name = "%s-slant%f" % (basefontname, self.slant)
else:
self.name = basefontname
class text_pt(canvas.canvasitem):
def __init__(self, x_pt, y_pt, font):
self.font = font
self.x_pt = x_pt
self.y_pt = y_pt
self.width_pt = 0
self.height_pt = 0
self.depth_pt = 0
self.chars = []
def addchar(self, char):
metric = self.font.metric
self.width_pt += metric.getwidth_pt(char)
cheight_pt = metric.getwidth_pt(char)
if cheight_pt > self.height_pt:
self.height_pt = cheight_pt
cdepth_pt = metric.getdepth_pt(char)
if cdepth_pt > self.depth_pt:
self.depth_pt = cdepth_pt
self.chars.append(char)
def bbox(self):
return bbox.bbox_pt(self.x_pt, self.y_pt-self.depth_pt, self.x_pt+self.width_pt, self.y_pt+self.height_pt)
def processPS(self, file, writer, context, registry, bbox):
# note that we don't register PSfont as it is just a helper resource
# which registers the needed components
pswriter.PSfont(self.font, self.chars, registry)
bbox += self.bbox()
if ( context.font is None or
context.font.name != self.font.name or
context.font.metric.getsize_pt() != self.font.metric.getsize_pt() ):
file.write("/%s %f selectfont\n" % (self.font.name, self.font.metric.getsize_pt()))
context.font = self.font
outstring = ""
for char in self.chars:
if char > 32 and char < 127 and chr(char) not in "()[]<>\\":
ascii = "%s" % chr(char)
else:
ascii = "\\%03o" % char
outstring += ascii
file.write("%g %g moveto (%s) show\n" % (self.x_pt, self.y_pt, outstring))
def processPDF(self, file, writer, context, registry, bbox):
registry.add(pdfwriter.PDFfont(self.font, self.chars, writer, registry))
bbox += self.bbox()
if ( context.font is None or
context.font.name != self.font.name or
context.font.metric.getsize_pt() != self.font.metric.getsize_pt() ):
file.write("/%s %f Tf\n" % (self.font.name, self.font.metric.getsize_pt()))
context.font = self.font
outstring = ""
for char in self.chars:
if 32 <= char <= 127 and chr(char) not in "()[]<>\\":
ascii = "%s" % chr(char)
else:
ascii = "\\%03o" % char
outstring += ascii
if self.font.slant is None:
slantvalue = 0
else:
slantvalue = self.font.slant
file.write("1 0 %f 1 %f %f Tm (%s) Tj\n" % (slantvalue, self.x_pt, self.y_pt, outstring))
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