manual/gradientname.py

   1 #!/usr/bin/env python
   2
   3 # WARNING: THIS IS REALLY OLD CODE. IT COULD PROBABLY BE DONE USING GRAPHX NOWADAYS.
   4 # HOWEVER, WE DON'T CARE. JUST DON'T TAKE THIS CODE TOO SERIOUSLY.
   5
   6 import sys, imp, re
   7 sys.path[:0] = [".."]
   8 import pyx
   9 from pyx import *
  10
  11 text.set(mode="latex")
  12 text.preamble(r"\renewcommand{\familydefault}{\ttdefault}")
  13
  14 c = canvas.canvas()
  15
  16 # data to be plotted
  17 pf = graph.data.paramfunction("k", 0, 1, "color, xmin, xmax, ymin, ymax= k, k, 1, 0, 1")
  18
  19 # positioning is quite ugly ... but it works at the moment
  20 y = 0
  21 dy = -0.65
  22
  23 # we could use gradient.__dict__ to get the instances, but we
  24 # would loose the ordering ... instead we just parse the file:
  25
  26 # see comment in colorname.py
  27
  28 p = re.compile("(?P<id>gradient\\.(?P<name>[a-z]+)) += [a-z]+gradient\\(.*\\)\n", re.IGNORECASE)
  29 lines = imp.find_module("color", pyx.__path__)[0].readlines()
  30 firstgraph = None
  31 for line in lines: # we yet don't use a file iterator
  32     m = p.match(line)
  33     if m:
  34         if firstgraph is None:
  35             xaxis = graph.axis.lin(
  36                 parter=graph.axis.parter.lin(tickdists=["0.5","0.1"], labeldists=["1"]),
  37                 painter=graph.axis.painter.regular(
  38                     innerticklength=None,
  39                     outerticklength=graph.axis.painter.ticklength.normal),
  40                 linkpainter=graph.axis.painter.regular(innerticklength=None, labelattrs=None))
  41             firstgraph = g = graph.graphxy(ypos=y, width=10, height=0.5, x2=xaxis, y=graph.axis.lin(parter=None))
  42         else:
  43             g = graph.graphxy(ypos=y, width=10, height=0.5, x2=graph.axis.linkedaxis(firstgraph.axes["x2"]), y=graph.axis.lin(parter=None))
  44         g.plot(pf, [graph.style.rect(gradient=getattr(pyx.color.gradient, m.group("name")), keygraph=None)])
  45         g.doplot()
  46         g.finish()
  47         c.insert(g)
  48         c.text(10.2, y + 0.15, m.group("id"), [text.size.footnotesize])
  49         y += dy
  50
  51
  52 c.writePDFfile()