274 lines
10 KiB
Python
274 lines
10 KiB
Python
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"""DetailsViewer class.
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This class implements a pure input window which allows you to meticulously
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edit the current color. You have both mouse control of the color (via the
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buttons along the bottom row), and there are keyboard bindings for each of the
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increment/decrement buttons.
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The top three check buttons allow you to specify which of the three color
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variations are tied together when incrementing and decrementing. Red, green,
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and blue are self evident. By tying together red and green, you can modify
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the yellow level of the color. By tying together red and blue, you can modify
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the magenta level of the color. By tying together green and blue, you can
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modify the cyan level, and by tying all three together, you can modify the
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grey level.
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The behavior at the boundaries (0 and 255) are defined by the `At boundary'
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option menu:
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Stop
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When the increment or decrement would send any of the tied variations
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out of bounds, the entire delta is discarded.
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Wrap Around
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When the increment or decrement would send any of the tied variations
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out of bounds, the out of bounds variation is wrapped around to the
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other side. Thus if red were at 238 and 25 were added to it, red
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would have the value 7.
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Preserve Distance
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When the increment or decrement would send any of the tied variations
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out of bounds, all tied variations are wrapped as one, so as to
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preserve the distance between them. Thus if green and blue were tied,
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and green was at 238 while blue was at 223, and an increment of 25
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were applied, green would be at 15 and blue would be at 0.
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Squash
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When the increment or decrement would send any of the tied variations
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out of bounds, the out of bounds variation is set to the ceiling of
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255 or floor of 0, as appropriate. In this way, all tied variations
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are squashed to one edge or the other.
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The following key bindings can be used as accelerators. Note that Pynche can
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fall behind if you hold the key down as a key repeat:
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Left arrow == -1
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Right arrow == +1
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Control + Left == -10
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Control + Right == 10
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Shift + Left == -25
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Shift + Right == +25
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"""
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from tkinter import *
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STOP = 'Stop'
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WRAP = 'Wrap Around'
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RATIO = 'Preserve Distance'
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GRAV = 'Squash'
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ADDTOVIEW = 'Details Window...'
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class DetailsViewer:
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def __init__(self, switchboard, master=None):
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self.__sb = switchboard
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optiondb = switchboard.optiondb()
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self.__red, self.__green, self.__blue = switchboard.current_rgb()
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# GUI
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root = self.__root = Toplevel(master, class_='Pynche')
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root.protocol('WM_DELETE_WINDOW', self.withdraw)
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root.title('Pynche Details Window')
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root.iconname('Pynche Details Window')
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root.bind('<Alt-q>', self.__quit)
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root.bind('<Alt-Q>', self.__quit)
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root.bind('<Alt-w>', self.withdraw)
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root.bind('<Alt-W>', self.withdraw)
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# accelerators
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root.bind('<KeyPress-Left>', self.__minus1)
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root.bind('<KeyPress-Right>', self.__plus1)
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root.bind('<Control-KeyPress-Left>', self.__minus10)
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root.bind('<Control-KeyPress-Right>', self.__plus10)
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root.bind('<Shift-KeyPress-Left>', self.__minus25)
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root.bind('<Shift-KeyPress-Right>', self.__plus25)
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#
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# color ties
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frame = self.__frame = Frame(root)
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frame.pack(expand=YES, fill=X)
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self.__l1 = Label(frame, text='Move Sliders:')
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self.__l1.grid(row=1, column=0, sticky=E)
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self.__rvar = IntVar()
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self.__rvar.set(optiondb.get('RSLIDER', 4))
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self.__radio1 = Checkbutton(frame, text='Red',
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variable=self.__rvar,
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command=self.__effect,
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onvalue=4, offvalue=0)
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self.__radio1.grid(row=1, column=1, sticky=W)
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self.__gvar = IntVar()
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self.__gvar.set(optiondb.get('GSLIDER', 2))
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self.__radio2 = Checkbutton(frame, text='Green',
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variable=self.__gvar,
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command=self.__effect,
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onvalue=2, offvalue=0)
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self.__radio2.grid(row=2, column=1, sticky=W)
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self.__bvar = IntVar()
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self.__bvar.set(optiondb.get('BSLIDER', 1))
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self.__radio3 = Checkbutton(frame, text='Blue',
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variable=self.__bvar,
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command=self.__effect,
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onvalue=1, offvalue=0)
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self.__radio3.grid(row=3, column=1, sticky=W)
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self.__l2 = Label(frame)
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self.__l2.grid(row=4, column=1, sticky=W)
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self.__effect()
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#
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# Boundary behavior
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self.__l3 = Label(frame, text='At boundary:')
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self.__l3.grid(row=5, column=0, sticky=E)
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self.__boundvar = StringVar()
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self.__boundvar.set(optiondb.get('ATBOUND', STOP))
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self.__omenu = OptionMenu(frame, self.__boundvar,
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STOP, WRAP, RATIO, GRAV)
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self.__omenu.grid(row=5, column=1, sticky=W)
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self.__omenu.configure(width=17)
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#
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# Buttons
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frame = self.__btnframe = Frame(frame)
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frame.grid(row=0, column=0, columnspan=2, sticky='EW')
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self.__down25 = Button(frame, text='-25',
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command=self.__minus25)
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self.__down10 = Button(frame, text='-10',
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command=self.__minus10)
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self.__down1 = Button(frame, text='-1',
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command=self.__minus1)
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self.__up1 = Button(frame, text='+1',
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command=self.__plus1)
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self.__up10 = Button(frame, text='+10',
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command=self.__plus10)
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self.__up25 = Button(frame, text='+25',
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command=self.__plus25)
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self.__down25.pack(expand=YES, fill=X, side=LEFT)
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self.__down10.pack(expand=YES, fill=X, side=LEFT)
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self.__down1.pack(expand=YES, fill=X, side=LEFT)
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self.__up1.pack(expand=YES, fill=X, side=LEFT)
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self.__up10.pack(expand=YES, fill=X, side=LEFT)
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self.__up25.pack(expand=YES, fill=X, side=LEFT)
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def __effect(self, event=None):
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tie = self.__rvar.get() + self.__gvar.get() + self.__bvar.get()
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if tie in (0, 1, 2, 4):
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text = ''
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else:
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text = '(= %s Level)' % {3: 'Cyan',
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5: 'Magenta',
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6: 'Yellow',
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7: 'Grey'}[tie]
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self.__l2.configure(text=text)
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def __quit(self, event=None):
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self.__root.quit()
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def withdraw(self, event=None):
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self.__root.withdraw()
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def deiconify(self, event=None):
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self.__root.deiconify()
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def __minus25(self, event=None):
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self.__delta(-25)
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def __minus10(self, event=None):
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self.__delta(-10)
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def __minus1(self, event=None):
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self.__delta(-1)
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def __plus1(self, event=None):
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self.__delta(1)
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def __plus10(self, event=None):
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self.__delta(10)
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def __plus25(self, event=None):
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self.__delta(25)
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def __delta(self, delta):
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tie = []
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if self.__rvar.get():
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red = self.__red + delta
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tie.append(red)
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else:
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red = self.__red
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if self.__gvar.get():
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green = self.__green + delta
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tie.append(green)
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else:
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green = self.__green
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if self.__bvar.get():
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blue = self.__blue + delta
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tie.append(blue)
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else:
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blue = self.__blue
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# now apply at boundary behavior
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atbound = self.__boundvar.get()
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if atbound == STOP:
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if red < 0 or green < 0 or blue < 0 or \
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red > 255 or green > 255 or blue > 255:
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# then
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red, green, blue = self.__red, self.__green, self.__blue
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elif atbound == WRAP or (atbound == RATIO and len(tie) < 2):
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if red < 0:
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red += 256
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if green < 0:
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green += 256
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if blue < 0:
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blue += 256
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if red > 255:
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red -= 256
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if green > 255:
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green -= 256
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if blue > 255:
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blue -= 256
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elif atbound == RATIO:
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# for when 2 or 3 colors are tied together
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dir = 0
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for c in tie:
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if c < 0:
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dir = -1
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elif c > 255:
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dir = 1
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if dir == -1:
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delta = max(tie)
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if self.__rvar.get():
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red = red + 255 - delta
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if self.__gvar.get():
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green = green + 255 - delta
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if self.__bvar.get():
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blue = blue + 255 - delta
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elif dir == 1:
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delta = min(tie)
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if self.__rvar.get():
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red = red - delta
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if self.__gvar.get():
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green = green - delta
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if self.__bvar.get():
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blue = blue - delta
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elif atbound == GRAV:
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if red < 0:
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red = 0
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if green < 0:
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green = 0
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if blue < 0:
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blue = 0
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if red > 255:
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red = 255
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if green > 255:
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green = 255
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if blue > 255:
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blue = 255
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self.__sb.update_views(red, green, blue)
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self.__root.update_idletasks()
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def update_yourself(self, red, green, blue):
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self.__red = red
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self.__green = green
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self.__blue = blue
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def save_options(self, optiondb):
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optiondb['RSLIDER'] = self.__rvar.get()
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optiondb['GSLIDER'] = self.__gvar.get()
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optiondb['BSLIDER'] = self.__bvar.get()
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optiondb['ATBOUND'] = self.__boundvar.get()
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