manual/arrows.py

   1 from pyx import *
   2
   3 text.set(mode="latex")
   4 text.preamble(r"\renewcommand{\familydefault}{\ttdefault}")
   5 c = canvas.canvas()
   6
   7 # positioning is quite ugly ... but it works at the moment
   8 x = 0
   9 y = 0
  10 dx = 6
  11 dy = -0.65
  12 length = 1.2
  13
  14 def drawdeco(name, showpath=0, default=0):
  15     global x,y
  16     p = path.path(path.moveto(x + 0.1, y+0.1 ),
  17                        path.rlineto(length/2.0, 0.3),
  18                        path.rlineto(length/2.0, -0.3))
  19     c.stroke(p, [style.linewidth.THIck,  eval("deco."+name)])
  20     if showpath:
  21         c.stroke(p, [style.linewidth.Thin, color.gray.white])
  22     if default:
  23         name = name + r"\rm\quad (default)"
  24     c.text(x + 1.5, y + 0.15, name, [text.size.footnotesize])
  25     y += dy
  26     if y < -16:
  27         y = 0
  28         x += dx
  29
  30 drawdeco("earrow.Small")
  31 drawdeco("earrow.small")
  32 drawdeco("earrow.normal")
  33 drawdeco("earrow.large")
  34 drawdeco("earrow.Large")
  35
  36 y += dy
  37
  38 drawdeco("barrow.normal")
  39
  40 y += dy
  41
  42 drawdeco("earrow.Large([deco.filled([color.rgb.red]), style.linewidth.normal])")
  43 drawdeco("earrow.normal(constriction=None)")
  44 drawdeco("earrow.Large([style.linejoin.round])")
  45 drawdeco("earrow.Large([deco.stroked.clear])")
  46
  47 c.writePDFfile()