manual/palettename.py

   1 #!/usr/bin/env python
   2 import sys, imp, re
   3 sys.path[:0] = [".."]
   4 import pyx
   5 from pyx import *
   6
   7 text.set(mode="latex")
   8 text.preamble(r"\renewcommand{\familydefault}{\ttdefault}")
   9
  10 c = canvas.canvas()
  11
  12 # data to be plotted
  13 pf = graph.data.paramfunction("k", 0, 1, "color, xmin, xmax, ymin, ymax= k, k, 1, 0, 1")
  14
  15 # positioning is quite ugly ... but it works at the moment
  16 y = 0
  17 dy = -0.65
  18
  19 # we could use palette.__dict__ to get the instances, but we
  20 # would loose the ordering ... instead we just parse the file:
  21 p = re.compile("(?P<id>palette\\.(?P<name>[a-z]+)) += palette\\(.*\\)\n", re.IGNORECASE)
  22 lines = imp.find_module("color", pyx.__path__)[0].readlines()
  23 first = 1
  24 for line in lines: # we yet don't use a file iterator
  25     m = p.match(line)
  26     if m:
  27         xaxis = graph.axis.lin(
  28                 parter=graph.axis.parter.lin(tickdist=("0.5","0.1"), labeldist="1"),
  29                 painter=graph.axis.painter.regular(innerticklength=None, labelattrs=None))
  30         if first:
  31             x2axis=graph.axis.linked(xaxis,
  32                 painter=graph.axis.painter.linked(
  33                     innerticklength=None,
  34                     outerticklength=graph.axis.painter.ticklength.normal,
  35                     labelattrs=[]))
  36             first = 0
  37         else:
  38             x2axis=graph.axis.linked(xaxis, painter=graph.axis.painter.linked(innerticklength=None))
  39         g = c.insert(graph.graphxy(ypos=y, width=10, height=0.5, x=xaxis, x2=x2axis, y=graph.axis.lin(parter=None)))
  40         g.plot(pf, graph.style.rect(getattr(pyx.color.palette, m.group("name"))))
  41         g.dodata()
  42         g.finish()
  43         c.text(10.2, y + 0.15, m.group("id"), [text.size.footnotesize])
  44         y += dy
  45
  46
  47 c.writeEPSfile("palettename", paperformat="a4")