Tools/pynche/Main.py

   1 """Pynche -- The PYthon Natural Color and Hue Editor.
   2
   3 Contact: Barry Warsaw
   4 Email:   bwarsaw@python.org
   5 Version: %(__version__)s
   6
   7 Pynche is based largely on a similar color editor I wrote years ago for the
   8 Sunview window system.  That editor was called ICE: the Interactive Color
   9 Editor.  I'd always wanted to port the editor to X but didn't feel like
  10 hacking X and C code to do it.  Fast forward many years, to where Python +
  11 Tkinter provides such a nice programming environment, with enough power, that
  12 I finally buckled down and implemented it.  I changed the name because these
  13 days, too many other systems have the acronym `ICE'.
  14
  15 This program currently requires Python 1.5 with Tkinter.  It has only been
  16 tested on Solaris 2.6.  Feedback is greatly appreciated.  Send email to
  17 bwarsaw@python.org
  18
  19 Usage: %(PROGRAM)s [-d file] [-i file] [-X] [-v] [-h] [initialcolor]
  20
  21 Where:
  22     --database file
  23     -d file
  24         Alternate location of a color database file
  25
  26     --initfile file
  27     -i file
  28         Alternate location of the initialization file.  This file contains a
  29         persistent database of the current Pynche options and color.  This
  30         means that Pynche restores its option settings and current color when
  31         it restarts, using this file (unless the -X option is used).  The
  32         default is ~/.pynche
  33
  34     --ignore
  35     -X
  36         Ignore the initialization file when starting up.  Pynche will still
  37         write the current option settings to this file when it quits.
  38
  39     --version
  40     -v
  41         print the version number
  42
  43     --help
  44     -h
  45         print this message
  46
  47     initialcolor
  48         initial color, as a color name or #RRGGBB format
  49
  50 """
  51
  52 __version__ = '0.1'
  53
  54 import sys
  55 import os
  56 import string
  57 import getopt
  58 import ColorDB
  59 from PyncheWidget import PyncheWidget
  60 from Switchboard import Switchboard
  61 from StripViewer import StripViewer
  62 from ChipViewer import ChipViewer
  63 from TypeinViewer import TypeinViewer
  64
  65
  66 \f
  67 PROGRAM = sys.argv[0]
  68
  69 # Default locations of rgb.txt or other textual color database
  70 RGB_TXT = [
  71     # Solaris OpenWindows
  72     '/usr/openwin/lib/rgb.txt',
  73     # The X11R6.4 rgb.txt file
  74     os.path.join(sys.path[0], 'X/rgb.txt'),
  75     # add more here
  76     ]
  77
  78
  79 \f
  80 def docstring():
  81     return string.rstrip(__doc__ % globals())
  82
  83
  84 def usage(status, msg=''):
  85     print docstring()
  86     if msg:
  87         print msg
  88     sys.exit(status)
  89
  90
  91 \f
  92 def initial_color(s, colordb):
  93     # function called on every color
  94     def scan_color(s, colordb=colordb):
  95         try:
  96             r, g, b = colordb.find_byname(s)
  97         except ColorDB.BadColor:
  98             try:
  99                 r, g, b = ColorDB.rrggbb_to_triplet(s)
 100             except ColorDB.BadColor:
 101                 return None, None, None
 102         return r, g, b
 103     #
 104     # First try the passed in color
 105     r, g, b = scan_color(s)
 106     if r is None:
 107         # try the same color with '#' prepended, since some shells require
 108         # this to be escaped, which is a pain
 109         r, g, b = scan_color('#' + s)
 110     if r is None:
 111         print 'Bad initial color, using gray50:', s
 112         r, g, b = scan_color('gray50')
 113     if r is None:
 114         usage(1, 'Cannot find an initial color to use')
 115         # does not return
 116     return r, g, b
 117
 118
 119 \f
 120 def build(master=None, initialcolor=None, initfile=None, ignore=None):
 121     # create the windows and go
 122     for f in RGB_TXT:
 123         try:
 124             colordb = ColorDB.get_colordb(f)
 125             if colordb:
 126                 break
 127         except IOError:
 128             pass
 129     else:
 130         usage(1, 'No color database file found, see the -d option.')
 131
 132     # create all output widgets
 133     s = Switchboard(colordb, not ignore and initfile)
 134
 135     # create the application window decorations
 136     app = PyncheWidget(__version__, s, master=master)
 137     w = app.window()
 138
 139     s.add_view(StripViewer(s, w))
 140     s.add_view(ChipViewer(s, w))
 141     s.add_view(TypeinViewer(s, w))
 142
 143     # get the initial color as components and set the color on all views.  if
 144     # there was no initial color given on the command line, use the one that's
 145     # stored in the option database
 146     if initialcolor is None:
 147         optiondb = s.optiondb()
 148         red = optiondb.get('RED')
 149         green = optiondb.get('GREEN')
 150         blue = optiondb.get('BLUE')
 151         # but if there wasn't any stored in the database, use grey50
 152         if red is None or blue is None or green is None:
 153             red, green, blue = initial_color('grey50', colordb)
 154     else:
 155         red, green, blue = initial_color(initialcolor, colordb)
 156     s.update_views(red, green, blue)
 157     return app, s
 158
 159
 160 def run(app, s):
 161     try:
 162         app.start()
 163     except KeyboardInterrupt:
 164         pass
 165
 166
 167 \f
 168 def main():
 169     try:
 170         opts, args = getopt.getopt(
 171             sys.argv[1:],
 172             'hd:i:Xv',
 173             ['database=', 'initfile=', 'ignore', 'help', 'version'])
 174     except getopt.error, msg:
 175         usage(1, msg)
 176
 177     if len(args) == 0:
 178         initialcolor = None
 179     elif len(args) == 1:
 180         initialcolor = args[0]
 181     else:
 182         usage(1)
 183
 184     ignore = 0
 185     initfile = os.path.expanduser('~/.pynche')
 186     for opt, arg in opts:
 187         if opt in ('-h', '--help'):
 188             usage(0)
 189         elif opt in ('-v', '--version'):
 190             print '''\
 191 Pynche -- The PYthon Natural Color and Hue Editor.
 192 Contact: Barry Warsaw
 193 Email:   bwarsaw@python.org
 194 Version: %s''' % __version__
 195             sys.exit(0)
 196         elif opt in ('-d', '--database'):
 197             RGB_TXT.insert(0, arg)
 198         elif opt in ('-X', '--ignore'):
 199             ignore = 1
 200         elif opt in ('-i', '--initfile'):
 201             initfile = arg
 202
 203     app, sb = build(initialcolor=initialcolor,
 204                     initfile=initfile,
 205                     ignore=ignore)
 206     run(app, sb)
 207     sb.save_views()
 208
 209 \f
 210 if __name__ == '__main__':
 211     main()