De PMW-ify
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Barry Warsaw
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"""Main Pynche (Pythonically Natural Color and Hue Editor) widget.
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"""
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import sys
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from Tkinter import *
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import Pmw
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import ColorDB
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from ChipWidget import ChipWidget
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from TypeinWidget import TypeinWidget
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from StripWidget import StripWidget
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from OptionsWidget import PyncheOptions
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# Milliseconds between interrupt checks
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KEEPALIVE_TIMER = 500
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ABOUTTEXT = '''Pynche 1.0 -- The Pythonically Natural Color and Hue Editor
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Copyright (C) 1998 Barry A. Warsaw
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class PyncheWidget:
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def __init__(self, version):
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# create the first and top window
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root = self.__root = Tk(className='Pynche')
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root.protocol('WM_DELETE_WINDOW', self.__quit)
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root.title('Pynche %s' % version)
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root.iconname('Pynche')
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root.tk.createtimerhandler(KEEPALIVE_TIMER, self.__keepalive)
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#
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# create the menubar
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#
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menubar = self.__menubar = Frame(root, relief=RAISED, borderwidth=2)
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menubar.pack(fill=X)
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#
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# File menu
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#
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filebtn = Menubutton(menubar, text='File',
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underline=0)
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filebtn.pack(side=LEFT)
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filemenu = Menu(filebtn, tearoff=0)
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filebtn['menu'] = filemenu
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filemenu.add_command(label='Quit',
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command=self.__quit,
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accelerator='Alt-Q',
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underline=0)
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root.bind('<Alt-q>', self.__quit)
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root.bind('<Alt-Q>', self.__quit)
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#
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# Edit Menu
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#
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editbtn = Menubutton(menubar, text='Edit',
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underline=0)
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editbtn.pack(side=LEFT)
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editmenu = Menu(editbtn, tearoff=0)
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editbtn['menu'] = editmenu
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editmenu.add_command(label='Options...',
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command=self.__popup_options,
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underline=0)
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#
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# Help menu
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#
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helpbtn = Menubutton(menubar, text='Help',
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underline=0)
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helpbtn.pack(side=RIGHT)
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helpmenu = Menu(helpbtn, tearoff=0)
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helpbtn['menu'] = helpmenu
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helpmenu.add_command(label='About...',
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command=self.__popup_about,
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underline=0)
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Pynche is based on ICE 1.2 (Interactive Color Editor), written by
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Barry A. Warsaw for the SunView window system in 1987.'''
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def constant(numchips):
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step = 255.0 / (numchips - 1)
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start = 0.0
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seq = []
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while numchips > 0:
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seq.append(int(start))
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start = start + step
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numchips = numchips - 1
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return seq
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# red variations, green+blue = cyan constant
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def constant_cyan_generator(numchips, rgbtuple):
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red, green, blue = rgbtuple
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seq = constant(numchips)
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return map(None, seq, [green] * numchips, [blue] * numchips)
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# green variations, red+blue = magenta constant
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def constant_magenta_generator(numchips, rgbtuple):
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red, green, blue = rgbtuple
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seq = constant(numchips)
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return map(None, [red] * numchips, seq, [blue] * numchips)
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# blue variations, red+green = yellow constant
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def constant_yellow_generator(numchips, rgbtuple):
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red, green, blue = rgbtuple
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seq = constant(numchips)
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return map(None, [red] * numchips, [green] * numchips, seq)
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class PyncheWidget(Pmw.MegaWidget):
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def __init__(self, colordb, parent=None, **kw):
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self.__colordb = colordb
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self.__parent = parent
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self.__about_dialog = None
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self.__options_dialog = None
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options = (('color', (128, 128, 128), self.__set_color),
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('delegate', None, None),
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)
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self.defineoptions(kw, options)
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# initialize base class -- after defining options
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Pmw.MegaWidget.__init__(self, parent)
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# create menubar
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self.__menubar = Pmw.MenuBar(parent,
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hull_relief=RAISED,
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hull_borderwidth=1)
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self.__menubar.pack(side=TOP, expand=YES, fill=BOTH)
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self.__menubar.addmenu('File', None)
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self.__menubar.addmenuitem('File',
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type=COMMAND,
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label='Quit',
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command=self.__quit,
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accelerator='Alt-Q')
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parent.bind('<Alt-q>', self.__quit)
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parent.bind('<Alt-Q>', self.__quit)
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self.__menubar.addmenu('Help', None, side=RIGHT)
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self.__menubar.addmenuitem('Help',
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type=COMMAND,
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label='About...',
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command=self.__popup_about,
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accelerator='Alt-A')
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parent.bind('<Alt-a>', self.__popup_about)
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parent.bind('<Alt-A>', self.__popup_about)
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self.__menubar.addmenu('Edit', None)
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self.__menubar.addmenuitem('Edit',
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type=COMMAND,
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label='Options...',
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command=self.__popup_options,
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accelerator='Alt-O')
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parent.bind('<Alt-o>', self.__popup_options)
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parent.bind('<Alt-O>', self.__popup_options)
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# create color selectors
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group = Pmw.Group(parent, tag_text='Variations')
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group.pack(side=TOP, expand=YES, fill=BOTH)
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self.__reds = StripWidget(group.interior(),
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generator=constant_cyan_generator,
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axis=0, label='Red Variations')
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self.__reds.pack()
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self.__blues = StripWidget(group.interior(),
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generator=constant_magenta_generator,
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axis=1, label='Green Variations')
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self.__blues.pack()
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self.__greens = StripWidget(group.interior(),
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generator=constant_yellow_generator,
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axis=2, label='Blue Variations')
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self.__greens.pack()
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# create chip window
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group = Pmw.Group(parent, tag_text='Current Color')
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interior = group.interior()
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group.pack(side=LEFT, expand=YES, fill=BOTH)
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self.__selected = ChipWidget(interior,
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label_text='Selected')
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self.__selected.grid()
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self.__nearest = ChipWidget(interior,
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label_text='Nearest')
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self.__nearest.grid(row=0, column=1)
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# TBD: this is somewhat bogus, as the code should be in a derived
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# class of ChipWidget.
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self.__chip = self.__nearest.component('chip')
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self.__chip.bind('<ButtonPress-1>', self.__buttonpress)
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self.__chip.bind('<ButtonRelease-1>', self.__buttonrelease)
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# create the type-in window
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self.__typein = TypeinWidget(interior)
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self.__typein.grid(row=0, column=2)
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# Check keywords and initialize options
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self.initialiseoptions(PyncheWidget)
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self.__typein.configure(delegate=self)
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self.__reds.configure(delegate=self)
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self.__greens.configure(delegate=self)
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self.__blues.configure(delegate=self)
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#
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# PUBLIC INTERFACE
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#
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def set_color(self, obj, rgbtuple):
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nearest = self.__colordb.nearest(rgbtuple)
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red, green, blue = self.__colordb.find_byname(nearest)
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# for an exact match, use the color name
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if (red, green, blue) == rgbtuple:
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self.__selected.configure(color=nearest)
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# otherwise, use the #rrggbb name
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else:
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rrggbb = ColorDB.triplet_to_rrggbb(rgbtuple)
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self.__selected.configure(color=rrggbb)
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# configure all subwidgets
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self.__nearest.configure(color=nearest)
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self.__typein.configure(color=rgbtuple)
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self.__reds.configure(color=rgbtuple)
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self.__greens.configure(color=rgbtuple)
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self.__blues.configure(color=rgbtuple)
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delegate = self['delegate']
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if delegate:
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delegate.set_color(self, rgbtuple)
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#
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# PRIVATE INTERFACE
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#
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def __set_color(self):
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self.set_color(self, self['color'])
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def __buttonpress(self, event=None):
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self.__chip.configure(relief=SUNKEN)
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def __buttonrelease(self, event=None):
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self.__chip.configure(relief=RAISED)
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color = self.__nearest['color']
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rgbtuple = self.__colordb.find_byname(color)
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self.set_color(self, rgbtuple)
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def __keepalive(self):
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# Exercise the Python interpreter regularly so keyboard interrupts get
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# through.
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self.__root.tk.createtimerhandler(KEEPALIVE_TIMER, self.__keepalive)
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def __quit(self, event=None):
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self.__parent.quit()
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sys.exit(0)
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def __popup_about(self, event=None):
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if not self.__about_dialog:
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Pmw.aboutversion('1.0')
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Pmw.aboutcopyright('Copyright (C) 1998 Barry A. Warsaw\n'
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'All rights reserved')
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Pmw.aboutcontact('For information about Pynche contact:\n'
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'Barry A. Warsaw\n'
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'email: bwarsaw@python.org')
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self.__about_dialog = Pmw.AboutDialog(
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applicationname='Pynche -- the PYthonically Natural\n'
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'Color and Hue Editor')
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self.__about_dialog.show()
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def start(self):
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self.__keepalive()
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self.__root.mainloop()
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def parent(self):
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return self.__root
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def __popup_options(self, event=None):
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if not self.__options_dialog:
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self.__options_dialog = PyncheOptions(
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title='Pynche Options',
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applycommand=self.__apply)
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# pop up the window, non-modal
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self.__options_dialog.deiconify()
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print 'Options...'
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def __popup_about(self, event=None):
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print 'About...'
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## # create chip window
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## group = Pmw.Group(parent, tag_text='Current Color')
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## interior = group.interior()
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## group.pack(side=LEFT, expand=YES, fill=BOTH)
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## self.__selected = ChipWidget(interior,
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## label_text='Selected')
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## self.__selected.grid()
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## self.__nearest = ChipWidget(interior,
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## label_text='Nearest')
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## self.__nearest.grid(row=0, column=1)
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## # TBD: this is somewhat bogus, as the code should be in a derived
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## # class of ChipWidget.
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## self.__chip = self.__nearest.component('chip')
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## self.__chip.bind('<ButtonPress-1>', self.__buttonpress)
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## self.__chip.bind('<ButtonRelease-1>', self.__buttonrelease)
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## # create the type-in window
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## self.__typein = TypeinWidget(interior)
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## self.__typein.grid(row=0, column=2)
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## # Check keywords and initialize options
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## self.initialiseoptions(PyncheWidget)
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## self.__typein.configure(delegate=self)
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## self.__reds.configure(delegate=self)
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## self.__greens.configure(delegate=self)
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## self.__blues.configure(delegate=self)
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## def __popup_about(self, event=None):
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## if not self.__about_dialog:
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## Pmw.aboutversion('1.0')
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## Pmw.aboutcopyright('Copyright (C) 1998 Barry A. Warsaw\n'
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## 'All rights reserved')
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## Pmw.aboutcontact('For information about Pynche contact:\n'
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## 'Barry A. Warsaw\n'
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## 'email: bwarsaw@python.org')
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## self.__about_dialog = Pmw.AboutDialog(
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## applicationname='Pynche -- the PYthonically Natural\n'
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## 'Color and Hue Editor')
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## self.__about_dialog.show()
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def __apply(self):
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self.__typein.set_update_on_typing(
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self.__options_dialog.get_value('typing'))
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flag = self.__options_dialog.get_value('dragging')
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for strip in (self.__reds, self.__greens, self.__blues):
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strip.set_update_while_dragging(flag)
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