175 lines
6.7 KiB
Python
175 lines
6.7 KiB
Python
"""ListViewer class.
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This class implements an input/output view on the color model. It lists every
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unique color (e.g. unique r/g/b value) found in the color database. Each
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color is shown by small swatch and primary color name. Some colors have
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aliases -- more than one name for the same r/g/b value. These aliases are
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displayed in the small listbox at the bottom of the screen.
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Clicking on a color name or swatch selects that color and updates all other
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windows. When a color is selected in a different viewer, the color list is
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scrolled to the selected color and it is highlighted. If the selected color
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is an r/g/b value without a name, no scrolling occurs.
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You can turn off Update On Click if all you want to see is the alias for a
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given name, without selecting the color.
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"""
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from tkinter import *
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import ColorDB
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ADDTOVIEW = 'Color %List Window...'
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class ListViewer:
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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.__lastbox = None
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self.__dontcenter = 0
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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 Color List')
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root.iconname('Pynche Color List')
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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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#
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# create the canvas which holds everything, and its scrollbar
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#
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frame = self.__frame = Frame(root)
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frame.pack()
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canvas = self.__canvas = Canvas(frame, width=160, height=300,
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borderwidth=2, relief=SUNKEN)
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self.__scrollbar = Scrollbar(frame)
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self.__scrollbar.pack(fill=Y, side=RIGHT)
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canvas.pack(fill=BOTH, expand=1)
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canvas.configure(yscrollcommand=(self.__scrollbar, 'set'))
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self.__scrollbar.configure(command=(canvas, 'yview'))
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self.__populate()
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#
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# Update on click
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self.__uoc = BooleanVar()
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self.__uoc.set(optiondb.get('UPONCLICK', 1))
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self.__uocbtn = Checkbutton(root,
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text='Update on Click',
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variable=self.__uoc,
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command=self.__toggleupdate)
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self.__uocbtn.pack(expand=1, fill=BOTH)
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#
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# alias list
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self.__alabel = Label(root, text='Aliases:')
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self.__alabel.pack()
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self.__aliases = Listbox(root, height=5,
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selectmode=BROWSE)
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self.__aliases.pack(expand=1, fill=BOTH)
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def __populate(self):
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#
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# create all the buttons
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colordb = self.__sb.colordb()
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canvas = self.__canvas
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row = 0
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widest = 0
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bboxes = self.__bboxes = []
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for name in colordb.unique_names():
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exactcolor = ColorDB.triplet_to_rrggbb(colordb.find_byname(name))
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canvas.create_rectangle(5, row*20 + 5,
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20, row*20 + 20,
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fill=exactcolor)
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textid = canvas.create_text(25, row*20 + 13,
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text=name,
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anchor=W)
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x1, y1, textend, y2 = canvas.bbox(textid)
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boxid = canvas.create_rectangle(3, row*20+3,
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textend+3, row*20 + 23,
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outline='',
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tags=(exactcolor, 'all'))
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canvas.bind('<ButtonRelease>', self.__onrelease)
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bboxes.append(boxid)
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if textend+3 > widest:
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widest = textend+3
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row += 1
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canvheight = (row-1)*20 + 25
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canvas.config(scrollregion=(0, 0, 150, canvheight))
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for box in bboxes:
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x1, y1, x2, y2 = canvas.coords(box)
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canvas.coords(box, x1, y1, widest, y2)
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def __onrelease(self, event=None):
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canvas = self.__canvas
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# find the current box
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x = canvas.canvasx(event.x)
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y = canvas.canvasy(event.y)
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ids = canvas.find_overlapping(x, y, x, y)
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for boxid in ids:
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if boxid in self.__bboxes:
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break
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else:
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## print 'No box found!'
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return
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tags = self.__canvas.gettags(boxid)
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for t in tags:
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if t[0] == '#':
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break
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else:
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## print 'No color tag found!'
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return
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red, green, blue = ColorDB.rrggbb_to_triplet(t)
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self.__dontcenter = 1
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if self.__uoc.get():
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self.__sb.update_views(red, green, blue)
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else:
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self.update_yourself(red, green, blue)
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self.__red, self.__green, self.__blue = red, green, blue
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def __toggleupdate(self, event=None):
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if self.__uoc.get():
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self.__sb.update_views(self.__red, self.__green, self.__blue)
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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 update_yourself(self, red, green, blue):
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canvas = self.__canvas
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# turn off the last box
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if self.__lastbox:
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canvas.itemconfigure(self.__lastbox, outline='')
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# turn on the current box
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colortag = ColorDB.triplet_to_rrggbb((red, green, blue))
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canvas.itemconfigure(colortag, outline='black')
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self.__lastbox = colortag
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# fill the aliases
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self.__aliases.delete(0, END)
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try:
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aliases = self.__sb.colordb().aliases_of(red, green, blue)[1:]
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except ColorDB.BadColor:
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self.__aliases.insert(END, '<no matching color>')
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return
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if not aliases:
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self.__aliases.insert(END, '<no aliases>')
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else:
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for name in aliases:
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self.__aliases.insert(END, name)
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# maybe scroll the canvas so that the item is visible
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if self.__dontcenter:
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self.__dontcenter = 0
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else:
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ig, ig, ig, y1 = canvas.coords(colortag)
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ig, ig, ig, y2 = canvas.coords(self.__bboxes[-1])
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h = int(canvas['height']) * 0.5
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canvas.yview('moveto', (y1-h) / y2)
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def save_options(self, optiondb):
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optiondb['UPONCLICK'] = self.__uoc.get()
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def colordb_changed(self, colordb):
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self.__canvas.delete('all')
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self.__populate()
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