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2be858230a
show(): added color keyword here so that the selected color can be chosen on each invocation of askcolor(). Also fixed this class, and askcolor() so that the same Chooser instance can be re-used instead of creating a new one on each invocation of askcolor(). Added a module function save() which can be used to explicitly save the option database in ~/.pynche. This does not happen automatically when used as a modal.
113 lines
3.3 KiB
Python
113 lines
3.3 KiB
Python
"""Color chooser implementing (almost) the tkColorColor interface
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"""
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import os
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from PyncheWidget import PyncheWidget
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import Main
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import ColorDB
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class Chooser:
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"""Ask for a color"""
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def __init__(self,
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master = None,
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databasefile = None,
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initfile = None,
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ignore = None,
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wantspec = None):
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self.__master = master
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self.__databasefile = databasefile
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self.__initfile = initfile or os.path.expanduser('~/.pynche')
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self.__ignore = ignore
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self.__pw = None
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self.__wantspec = wantspec
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def show(self, color=None):
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if not self.__master:
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from Tkinter import Tk
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self.__master = Tk()
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if not self.__pw:
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self.__pw, self.__sb = \
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Main.build(master = self.__master,
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initfile = self.__initfile,
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ignore = self.__ignore)
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else:
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self.__pw.deiconify()
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# convert color
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colordb = self.__sb.colordb()
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if color:
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r, g, b = Main.initial_color(color, colordb)
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self.__sb.update_views(r, g, b)
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# reset the canceled flag and run it
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self.__sb.canceled(0)
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Main.run(self.__pw, self.__sb)
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rgbtuple = self.__sb.current_rgb()
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self.__pw.withdraw()
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# check to see if the cancel button was pushed
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if self.__sb.canceled_p():
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return None, None
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# try to return the color name from the database if there is an exact
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# match, otherwise use the "#rrggbb" spec. TBD: Forget about color
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# aliases for now, maybe later we should return these too.
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name = None
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if not self.__wantspec:
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try:
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name = colordb.find_byrgb(rgbtuple)[0]
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except ColorDB.BadColor:
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pass
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if name is None:
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name = ColorDB.triplet_to_rrggbb(rgbtuple)
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return rgbtuple, name
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def save(self):
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if self.__sb:
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self.__sb.save_views()
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# convenience stuff
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_chooser = None
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def askcolor(color = None, **options):
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"""Ask for a color"""
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global _chooser
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if not _chooser:
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_chooser = apply(Chooser, (), options)
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return _chooser.show(color)
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def save():
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global _chooser
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if _chooser:
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_chooser.save()
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# test stuff
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if __name__ == '__main__':
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class Tester:
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def __init__(self):
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from Tkinter import *
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self.__root = tk = Tk()
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b = Button(tk, text='Choose Color...', command=self.__choose)
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b.pack()
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self.__l = Label(tk)
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self.__l.pack()
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q = Button(tk, text='Quit', command=self.__quit)
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q.pack()
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def __choose(self, event=None):
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rgb, name = askcolor(master=self.__root)
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if rgb is None:
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text = 'You hit CANCEL!'
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else:
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r, g, b = rgb
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text = 'You picked %s (%3d/%3d/%3d)' % (name, r, g, b)
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self.__l.configure(text=text)
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def __quit(self, event=None):
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self.__root.quit()
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def run(self):
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self.__root.mainloop()
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t = Tester()
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t.run()
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# simpler
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## print 'color:', askcolor()
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## print 'color:', askcolor()
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