/usr/lib/python2.7/dist-packages/pyx/document.py is in python-pyx 0.12.1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
#
# Copyright (C) 2005-2011 Jörg Lehmann <joergl@users.sourceforge.net>
# Copyright (C) 2005-2011 André Wobst <wobsta@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 cStringIO, sys, warnings
import bbox, pswriter, pdfwriter, trafo, style, unit
import canvas as canvasmodule
class paperformat:
def __init__(self, width, height, name=None):
self.width = width
self.height = height
self.name = name
paperformat.A5 = paperformat(148.5 * unit.t_mm, 210 * unit.t_mm, "A5")
paperformat.A4 = paperformat(210 * unit.t_mm, 297 * unit.t_mm, "A4")
paperformat.A3 = paperformat(297 * unit.t_mm, 420 * unit.t_mm, "A3")
paperformat.A2 = paperformat(420 * unit.t_mm, 594 * unit.t_mm, "A2")
paperformat.A1 = paperformat(594 * unit.t_mm, 840 * unit.t_mm, "A1")
paperformat.A0 = paperformat(840 * unit.t_mm, 1188 * unit.t_mm, "A0")
paperformat.A0b = paperformat(910 * unit.t_mm, 1370 * unit.t_mm, None) # dedicated to our friends in Augsburg
paperformat.Letter = paperformat(8.5 * unit.t_inch, 11 * unit.t_inch, "Letter")
paperformat.Legal = paperformat(8.5 * unit.t_inch, 14 * unit.t_inch, "Legal")
def _paperformatfromstring(name):
return getattr(paperformat, name.capitalize())
class page:
def __init__(self, canvas, pagename=None, paperformat=None, rotated=0, centered=1, fittosize=0,
margin=1*unit.t_cm, bboxenlarge=1*unit.t_pt, bbox=None):
self.canvas = canvas
self.pagename = pagename
# support for deprecated string specification of paper formats
try:
paperformat + ""
except:
self.paperformat = paperformat
else:
self.paperformat = _paperformatfromstring(paperformat)
warnings.warn("specification of paperformat by string is deprecated, use document.paperformat.%s instead" % paperformat.capitalize(), DeprecationWarning)
self.rotated = rotated
self.centered = centered
self.fittosize = fittosize
self.margin = margin
self.bboxenlarge = bboxenlarge
self.pagebbox = bbox
def _process(self, processMethod, contentfile, writer, context, registry, bbox):
# usually, it is the bbox of the canvas enlarged by self.bboxenlarge, but
# it might be a different bbox as specified in the page constructor
assert not bbox
if self.pagebbox:
bbox.set(self.pagebbox)
else:
bbox.set(self.canvas.bbox()) # this bbox is not accurate
bbox.enlarge(self.bboxenlarge)
# check whether we expect a page trafo and use a temporary canvas to insert the
# page canvas
if self.paperformat and (self.rotated or self.centered or self.fittosize) and bbox:
# calculate the pagetrafo
paperwidth, paperheight = self.paperformat.width, self.paperformat.height
# center (optionally rotated) output on page
if self.rotated:
pagetrafo = trafo.rotate(90).translated(paperwidth, 0)
if self.centered or self.fittosize:
if not self.fittosize and (bbox.height() > paperwidth or bbox.width() > paperheight):
warnings.warn("content exceeds the papersize")
pagetrafo = pagetrafo.translated(-0.5*(paperwidth - bbox.height()) + bbox.bottom(),
0.5*(paperheight - bbox.width()) - bbox.left())
else:
if not self.fittosize and (bbox.width() > paperwidth or bbox.height() > paperheight):
warnings.warn("content exceeds the papersize")
pagetrafo = trafo.translate(0.5*(paperwidth - bbox.width()) - bbox.left(),
0.5*(paperheight - bbox.height()) - bbox.bottom())
if self.fittosize:
if 2*self.margin > paperwidth or 2*self.margin > paperheight:
raise ValueError("Margins too broad for selected paperformat. Aborting.")
paperwidth -= 2 * self.margin
paperheight -= 2 * self.margin
# scale output to pagesize - margins
if self.rotated:
sfactor = min(unit.topt(paperheight)/bbox.width_pt(), unit.topt(paperwidth)/bbox.height_pt())
else:
sfactor = min(unit.topt(paperwidth)/bbox.width_pt(), unit.topt(paperheight)/bbox.height_pt())
pagetrafo = pagetrafo.scaled(sfactor, sfactor, self.margin + 0.5*paperwidth, self.margin + 0.5*paperheight)
bbox.transform(pagetrafo)
cc = canvasmodule.canvas()
cc.insert(self.canvas, [pagetrafo])
else:
cc = self.canvas
getattr(style.linewidth.normal, processMethod)(contentfile, writer, context, registry, bbox)
if self.pagebbox:
bbox = bbox.copy() # don't alter the bbox provided to the constructor -> use a copy
getattr(cc, processMethod)(contentfile, writer, context, registry, bbox)
def processPS(self, *args):
self._process("processPS", *args)
def processPDF(self, *args):
self._process("processPDF", *args)
def _outputstream(file, suffix):
if file is None:
if not sys.argv[0].endswith(".py"):
raise RuntimeError("could not auto-guess filename")
return open("%s.%s" % (sys.argv[0][:-3], suffix), "wb")
if file == "-":
return sys.stdout
try:
file.write("")
return file
except:
if not file.endswith(".%s" % suffix):
return open("%s.%s" % (file, suffix), "wb")
return open(file, "wb")
class document:
"""holds a collection of page instances which are output as pages of a document"""
def __init__(self, pages=None):
if pages is None:
self.pages = []
else:
self.pages = pages
def append(self, page):
self.pages.append(page)
def writeEPSfile(self, file=None, **kwargs):
pswriter.EPSwriter(self, _outputstream(file, "eps"), **kwargs)
def writePSfile(self, file=None, **kwargs):
pswriter.PSwriter(self, _outputstream(file, "ps"), **kwargs)
def writePDFfile(self, file=None, **kwargs):
pdfwriter.PDFwriter(self, _outputstream(file, "pdf"), **kwargs)
def writetofile(self, filename, **kwargs):
if filename.endswith(".eps"):
self.writeEPSfile(open(filename, "wb"), **kwargs)
elif filename.endswith(".ps"):
self.writePSfile(open(filename, "wb"), **kwargs)
elif filename.endswith(".pdf"):
self.writePDFfile(open(filename, "wb"), **kwargs)
else:
raise ValueError("unknown file extension")
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