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.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 skiplevel = None
  24 for line in lines: # we yet don't use a file iterator
  25     m = p.match(line)
  26     if m:
  27         xaxis = graph.linaxis(datavmin=0, datavmax=1, part=graph.linpart(tickdist=("0.5","0.1"), labeldist="1"),
  28                               painter=graph.axispainter(innerticklengths=None, labelattrs=None))
  29         g = c.insert(graph.graphxy(ypos=y, width=10, height=0.5, x=xaxis,
  30                                    x2=graph.linkaxis(xaxis,
  31                                                      painter=graph.linkaxispainter(innerticklengths=None,
  32                                                                                    outerticklengths=graph.axispainter.defaultticklengths)),
  33                                    y=graph.linaxis(datavmin=0, datavmax=1, part=None)))
  34         g.plot(pf, graph.rect(pyx.color.palette.__dict__[m.group("name")]))
  35         g.dodata()
  36         g.finish()
  37         c.text(10.2, y + 0.15, m.group("id"), text.size.footnotesize)
  38         y += dy
  39         skiplevel = 0
  40
  41
  42 c.writetofile("palettename", paperformat="a4")