/usr/share/pyshared/pychart/pscanvas.py is in python-pychart 1.39-7.
This file is owned by root:root, with mode 0o644.
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# Copyright (C) 2000-2005 by Yasushi Saito (yasushi.saito@gmail.com)
#
# Jockey 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, or (at your option) any
# later version.
#
# Jockey 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.
#
import sys
import re
import theme
import version
import basecanvas
from scaling import *
comment_p = 0
# Converts BMP Unicode character to Postscript character name. In
# theory, we should be able to just use ISOLatin1Encoding, but this
# doesn't seem to work.
_unicode_latin1_conversion_table = {
0x0027: 'quotesingle',
0x0060: 'grave',
0x00A0: 'space',
0x00A1: 'exclamdown',
0x00A2: 'cent',
0x00A3: 'sterling',
0x00A4: 'currency',
0x00A5: 'yen',
0x00A6: 'brokenbar',
0x00A7: 'section',
0x00A8: 'dieresis',
0x00A9: 'copyright',
0x00AA: 'ordfeminine',
0x00AB: 'guillemotleft',
0x00AC: 'logicalnot',
0x00AD: 'hyphen',
0x00AE: 'registered',
0x00AF: 'macron',
0x00B0: 'degree',
0x00B1: 'plusminus',
0x00B2: 'twosuperior',
0x00B3: 'threesuperior',
0x00B4: 'acute',
0x00B5: 'mu',
0x00B6: 'paragraph',
0x00B7: 'periodcentered',
0x00B8: 'cedilla',
0x00B9: 'onesuperior',
0x00BA: 'ordmasculine',
0x00BB: 'guillemotright',
0x00BC: 'onequarter',
0x00BD: 'onehalf',
0x00BE: 'threequarters',
0x00BF: 'questiondown',
0x00C0: 'Agrave',
0x00C1: 'Aacute',
0x00C2: 'Acircumflex',
0x00C3: 'Atilde',
0x00C4: 'Adieresis',
0x00C5: 'Aring',
0x00C6: 'AE',
0x00C7: 'Ccedilla',
0x00C8: 'Egrave',
0x00C9: 'Eacute',
0x00CA: 'Ecircumflex',
0x00CB: 'Edieresis',
0x00CC: 'Igrave',
0x00CD: 'Iacute',
0x00CE: 'Icircumflex',
0x00CF: 'Idieresis',
0x00D0: 'Eth',
0x00D1: 'Ntilde',
0x00D2: 'Ograve',
0x00D3: 'Oacute',
0x00D4: 'Ocircumflex',
0x00D5: 'Otilde',
0x00D6: 'Odieresis',
0x00D7: 'multiply',
0x00D8: 'Oslash',
0x00D9: 'Ugrave',
0x00DA: 'Uacute',
0x00DB: 'Ucircumflex',
0x00DC: 'Udieresis',
0x00DD: 'Yacute',
0x00DE: 'Thorn',
0x00DF: 'germandbls',
0x00E0: 'agrave',
0x00E1: 'aacute',
0x00E2: 'acircumflex',
0x00E3: 'atilde',
0x00E4: 'adieresis',
0x00E5: 'aring',
0x00E6: 'ae',
0x00E7: 'ccedilla',
0x00E8: 'egrave',
0x00E9: 'eacute',
0x00EA: 'ecircumflex',
0x00EB: 'edieresis',
0x00EC: 'igrave',
0x00ED: 'iacute',
0x00EE: 'icircumflex',
0x00EF: 'idieresis',
0x00F0: 'eth',
0x00F1: 'ntilde',
0x00F2: 'ograve',
0x00F3: 'oacute',
0x00F4: 'ocircumflex',
0x00F5: 'otilde',
0x00F6: 'odieresis',
0x00F7: 'divide',
0x00F8: 'oslash',
0x00F9: 'ugrave',
0x00FA: 'uacute',
0x00FB: 'ucircumflex',
0x00FC: 'udieresis',
0x00FD: 'yacute',
0x00FE: 'thorn',
0x00FF: 'ydieresis',
}
class T(basecanvas.T):
def __init__(self, fname):
basecanvas.T.__init__(self)
self.__out_fname = fname
self.__reset_context()
self.__output_lines = []
self.__nr_gsave = 0
self.__font_ids = {}
self.__nr_fonts = 0
def __reset_context(self):
self.__font_name = None
self.__font_size = -1
self.__line_style = None
self.__color = None
self.__mtx_pushed = 0
self.__txtmtx_pushed = 0
def __intern_font(self, name):
if self.__font_ids.has_key(name):
return self.__font_ids[name]
id = "F%d" % self.__nr_fonts
self.__nr_fonts += 1
self.__font_ids[name] = id
return id
def newpath(self):
self.__write("N\n")
def stroke(self):
self.__write("ST\n")
def closepath(self):
self.__write("CP\n")
def moveto(self, x, y):
self.__write('%g %g M\n' % (x, y))
def set_fill_color(self, color):
if self.__color == color:
pass
else:
if color.r == color.g and color.r == color.b:
self.__write("%g SG\n" % color.r)
else:
self.__write("%g %g %g SC\n" % (color.r, color.g, color.b))
self.__color = color
def set_stroke_color(self, color):
self.set_fill_color(color)
def set_line_style(self, style):
self.set_stroke_color(style.color)
if (self.__line_style == style):
pass
else:
self.__write("%g %d %d " % (nscale(style.width),
style.cap_style, style.join_style))
if style.dash != None:
self.__write("[%s] 0 SLD " %
" ".join(map(str, nscale_seq(style.dash))))
else:
self.__write("SL ")
self.__line_style = style
def gsave(self):
self.__nr_gsave += 1
self.__write("GS\n")
def grestore(self):
self.__write("GR\n")
self.__nr_gsave -= 1
self.__reset_context()
def clip_sub(self):
self.__write("clip\n")
def path_arc(self, x, y, radius, ratio, start_angle, end_angle):
self.push_transformation((x, y), (1, ratio), None)
self.__write("0 0 %g %g %g arc\n" % (radius, start_angle, end_angle))
self.pop_transformation()
def curveto(self, a,b,c,d,e,f):
self.__write("%g %g %g %g %g %g curveto\n" % (a,b,c,d,e,f))
def push_transformation(self, baseloc, scale, angle, in_text=0):
self.__mtx_pushed += 1
self.__write("GB\n")
if baseloc != None:
self.__write("%g %g T\n" % (baseloc[0], baseloc[1]))
if angle != None and angle != 0:
self.__write("%g R\n" % (angle))
if scale != None:
self.__write("%g %g scale\n" % (scale[0], scale[1]))
def pop_transformation(self, in_text=0):
if self.__mtx_pushed == 0:
raise ValueError, "mtx not pushed"
self.__mtx_pushed -= 1
self.__write("GE\n")
def text_begin(self):
self.__txtmtx_pushed += 1
self.__write("TB\n")
def text_end(self):
self.__txtmtx_pushed -= 1
self.__write("TE\n")
def text_moveto(self, x, y, angle):
self.__write("%g %g T " % (x,y))
if angle != None and angle != 0:
self.__write("%g R " % angle)
self.moveto(0, 0)
def text_show(self, font_name, size, color, str):
self.set_fill_color(color)
if (self.__font_name == font_name and self.__font_size == size):
pass
else:
font_id = self.__intern_font(font_name)
self.__write("%g %s\n" % (size, font_id))
self.__font_name = font_name
self.__font_size = size
self.__write("(")
# Convert unicode to Postscript Latin code.
for ch in str:
# Note: Escaping of ()\ is done by the basecanvas.show, so
# we need not worry about them here. Perhaps we should move
# that code here??
n = ord(ch)
if n > 128 or ch in ("'", "`"):
ent = _unicode_latin1_conversion_table.get(n, None)
if not ent:
self.__write(ch)
else:
self.__write(") show /%s glyphshow (" % ent)
else:
self.__write(ch)
self.__write(") show\n")
def _path_polygon(self, points):
if (len(points) == 4
and points[0][0] == points[1][0]
and points[2][0] == points[3][0]
and points[0][1] == points[3][1]
and points[1][1] == points[2][1]):
# a rectangle.
(xmin, ymin, xmax, ymax) = basecanvas._compute_bounding_box(points)
if basecanvas.invisible_p(xmax, ymax):
return
self.setbb(xmin, ymin)
self.setbb(xmax, ymax)
self.__write("%g %g %g %g RECT\n" % \
(xscale(points[0][0]), yscale(points[0][1]),
xscale(points[2][0]), yscale(points[2][1])))
else:
basecanvas.T._path_polygon(self, points)
def lineto(self, x, y):
self.__write("%g %g L\n" % (x, y))
def fill(self):
self.__write("fill\n")
def comment(self, str):
if comment_p:
self.verbatim("%" + str)
def verbatim(self, str):
self.__write(str)
def close(self):
basecanvas.T.close(self)
if self.__output_lines == []:
return
fp, need_close = self.open_output(self.__out_fname)
if self.__nr_gsave != 0:
raise Exception, "gsave misnest (%d)" % (self.__nr_gsave)
self.write_preamble(fp)
fp.writelines(self.__output_lines)
fp.writelines(["showpage end\n",
"%%Trailer\n",
"%%EOF\n"])
if need_close:
fp.close()
def __write(self, str):
self.__output_lines.append(str)
def writelines(self, l):
self.__output_lines.extend(l)
def write_preamble(self, fp):
bbox = [self.__xmin-1, self.__ymin-1, self.__xmax+1, self.__ymax+1]
fp.write("%!PS-Adobe-2.0 EPSF-1.2\n")
fp.write("%%Title: " + self.title + "\n")
fp.write("%%Creator: " + self.creator + "\n")
if self.author:
fp.write("%%Author: " + self.author + "\n")
fp.write("%%CreationDate: " + self.creation_date + "\n")
fp.write("%%DocumentFonts: " + " ".join(self.__font_ids.keys()) + "\n")
fp.write("%%Pages: 1\n")
bbox = theme.adjust_bounding_box(bbox)
fp.write("%%%%BoundingBox: %d %d %d %d\n" % \
(round(xscale(bbox[0])),
round(yscale(bbox[1])),
round(xscale(bbox[2])),
round(yscale(bbox[3]))))
fp.write("%%EndComments\n")
if self.aux_comments != "":
for line in self.aux_comments.split("\n"):
fp.write("% " + line + "\n")
fp.write(preamble_text)
for name, font_id in self.__font_ids.items():
fp.write("/%s {/%s findfont SF} def\n" % (font_id, name))
fp.write("%%EndProlog\n%%Page: 1 1\n")
preamble_text="""
40 dict begin
/RECT {4 dict begin
/y2 exch def
/x2 exch def
/y1 exch def
/x1 exch def
newpath x1 y1 moveto x2 y1 lineto x2 y2 lineto x1 y2 lineto closepath
end
} def
/SF {exch scalefont setfont} def
/TB {matrix currentmatrix} def
/TE {setmatrix} def
/GB {matrix currentmatrix} def
/GE {setmatrix} def
/SG {1 1 1 setrgbcolor setgray} def
/SC {1 setgray setrgbcolor} def
/SL {[] 0 setdash setlinejoin setlinecap setlinewidth} def
/SLD {setdash setlinejoin setlinecap setlinewidth} def
/M {moveto} def
/L {lineto} def
/T {translate} def
/R {rotate} def
/N {newpath} def
/ST {stroke} def
/CP {closepath} def
/GR {grestore} def
/GS {gsave} def
"""
# SL: set line style.
# width [dash] x linecap linejoin SL ->
# SF: set font.
# name size SF ->
|