C///

\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5�\D6?\BD�\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2� \00$\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4�\E9\F2�\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// """Switchboard class. This class is used to coordinate updates among all Viewers. Every Viewer must conform to the following interface: - it must include a method called update_yourself() which takes three arguments; the red, green, and blue values of the selected color. - When a Viewer selects a color and wishes to update all other Views, it should call update_views() on the Switchboard object. Note that the Viewer typically does *not* update itself before calling update_views(), since this would cause it to get updated twice. Optionally, Viewers can also implement: - save_options() which takes an optiondb (a dictionary). Store into this dictionary any values the Viewer wants to save in the persistent ~/.pynche file. This dictionary is saved using marshal. The namespace for the keys is ad-hoc; make sure you don't clobber some other Viewer's keys! - withdraw() which takes no arguments. This is called when Pynche is unmapped. All Viewers should implement this. - colordb_changed() which takes a single argument, an instance of ColorDB. This is called whenever the color name database is changed and gives a chance for the Viewers to do something on those events. See ListViewer for details. External Viewers are found dynamically. Viewer modules should have names such as FooViewer.py. If such a named module has a module global variable called ADDTOVIEW and this variable is true, the Viewer will be added dynamically to the `View' menu. ADDTOVIEW contains a string which is used as the menu item to display the Viewer (one kludge: if the string contains a `%', this is used to indicate that the next character will get an underline in the menu, otherwise the first character is underlined). FooViewer.py should contain a class called FooViewer, and its constructor should take two arguments, an instance of Switchboard, and optionally a Tk master window. """ import sys from types import DictType import marshal class Switchboard: def __init__(self, initfile): self.__initfile = initfile self.__colordb = None self.__optiondb = {} self.__views = [] self.__red = 0 self.__green = 0 self.__blue = 0 self.__canceled = 0 # read the initialization file fp = None if initfile: try: try: fp = open(initfile) self.__optiondb = marshal.load(fp) if not isinstance(self.__optiondb, DictType): print >> sys.stderr, \ 'Problem reading options from file:', initfile self.__optiondb = {} except (IOError, EOFError, ValueError): pass finally: if fp: fp.close() def add_view(self, view): self.__views.append(view) def update_views(self, red, green, blue): self.__red = red