| 1 | """ListViewer class.
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| 2 |
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| 3 | This class implements an input/output view on the color model. It lists every
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| 4 | unique color (e.g. unique r/g/b value) found in the color database. Each
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| 5 | color is shown by small swatch and primary color name. Some colors have
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| 6 | aliases -- more than one name for the same r/g/b value. These aliases are
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| 7 | displayed in the small listbox at the bottom of the screen.
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| 8 |
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| 9 | Clicking on a color name or swatch selects that color and updates all other
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| 10 | windows. When a color is selected in a different viewer, the color list is
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| 11 | scrolled to the selected color and it is highlighted. If the selected color
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| 12 | is an r/g/b value without a name, no scrolling occurs.
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| 13 |
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| 14 | You can turn off Update On Click if all you want to see is the alias for a
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| 15 | given name, without selecting the color.
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| 16 | """
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| 17 |
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| 18 | from Tkinter import *
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| 19 | import ColorDB
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| 20 |
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| 21 | ADDTOVIEW = 'Color %List Window...'
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| 22 |
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| 23 | class ListViewer:
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| 24 | def __init__(self, switchboard, master=None):
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| 25 | self.__sb = switchboard
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| 26 | optiondb = switchboard.optiondb()
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| 27 | self.__lastbox = None
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| 28 | self.__dontcenter = 0
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| 29 | # GUI
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| 30 | root = self.__root = Toplevel(master, class_='Pynche')
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| 31 | root.protocol('WM_DELETE_WINDOW', self.withdraw)
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| 32 | root.title('Pynche Color List')
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| 33 | root.iconname('Pynche Color List')
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| 34 | root.bind('<Alt-q>', self.__quit)
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| 35 | root.bind('<Alt-Q>', self.__quit)
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| 36 | root.bind('<Alt-w>', self.withdraw)
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| 37 | root.bind('<Alt-W>', self.withdraw)
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| 38 | #
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| 39 | # create the canvas which holds everything, and its scrollbar
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| 40 | #
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| 41 | frame = self.__frame = Frame(root)
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| 42 | frame.pack()
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| 43 | canvas = self.__canvas = Canvas(frame, width=160, height=300,
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| 44 | borderwidth=2, relief=SUNKEN)
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| 45 | self.__scrollbar = Scrollbar(frame)
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| 46 | self.__scrollbar.pack(fill=Y, side=RIGHT)
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| 47 | canvas.pack(fill=BOTH, expand=1)
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| 48 | canvas.configure(yscrollcommand=(self.__scrollbar, 'set'))
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| 49 | self.__scrollbar.configure(command=(canvas, 'yview'))
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| 50 | self.__populate()
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| 51 | #
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| 52 | # Update on click
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| 53 | self.__uoc = BooleanVar()
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| 54 | self.__uoc.set(optiondb.get('UPONCLICK', 1))
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| 55 | self.__uocbtn = Checkbutton(root,
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| 56 | text='Update on Click',
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| 57 | variable=self.__uoc,
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| 58 | command=self.__toggleupdate)
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| 59 | self.__uocbtn.pack(expand=1, fill=BOTH)
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| 60 | #
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| 61 | # alias list
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| 62 | self.__alabel = Label(root, text='Aliases:')
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| 63 | self.__alabel.pack()
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| 64 | self.__aliases = Listbox(root, height=5,
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| 65 | selectmode=BROWSE)
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| 66 | self.__aliases.pack(expand=1, fill=BOTH)
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| 67 |
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| 68 | def __populate(self):
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| 69 | #
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| 70 | # create all the buttons
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| 71 | colordb = self.__sb.colordb()
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| 72 | canvas = self.__canvas
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| 73 | row = 0
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| 74 | widest = 0
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| 75 | bboxes = self.__bboxes = []
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| 76 | for name in colordb.unique_names():
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| 77 | exactcolor = ColorDB.triplet_to_rrggbb(colordb.find_byname(name))
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| 78 | canvas.create_rectangle(5, row*20 + 5,
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| 79 | 20, row*20 + 20,
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| 80 | fill=exactcolor)
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| 81 | textid = canvas.create_text(25, row*20 + 13,
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| 82 | text=name,
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| 83 | anchor=W)
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| 84 | x1, y1, textend, y2 = canvas.bbox(textid)
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| 85 | boxid = canvas.create_rectangle(3, row*20+3,
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| 86 | textend+3, row*20 + 23,
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| 87 | outline='',
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| 88 | tags=(exactcolor, 'all'))
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| 89 | canvas.bind('<ButtonRelease>', self.__onrelease)
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| 90 | bboxes.append(boxid)
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| 91 | if textend+3 > widest:
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| 92 | widest = textend+3
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| 93 | row += 1
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| 94 | canvheight = (row-1)*20 + 25
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| 95 | canvas.config(scrollregion=(0, 0, 150, canvheight))
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| 96 | for box in bboxes:
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| 97 | x1, y1, x2, y2 = canvas.coords(box)
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| 98 | canvas.coords(box, x1, y1, widest, y2)
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| 99 |
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| 100 | def __onrelease(self, event=None):
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| 101 | canvas = self.__canvas
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| 102 | # find the current box
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| 103 | x = canvas.canvasx(event.x)
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| 104 | y = canvas.canvasy(event.y)
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| 105 | ids = canvas.find_overlapping(x, y, x, y)
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| 106 | for boxid in ids:
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| 107 | if boxid in self.__bboxes:
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| 108 | break
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| 109 | else:
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| 110 | ## print 'No box found!'
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| 111 | return
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| 112 | tags = self.__canvas.gettags(boxid)
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| 113 | for t in tags:
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| 114 | if t[0] == '#':
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| 115 | break
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| 116 | else:
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| 117 | ## print 'No color tag found!'
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| 118 | return
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| 119 | red, green, blue = ColorDB.rrggbb_to_triplet(t)
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| 120 | self.__dontcenter = 1
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| 121 | if self.__uoc.get():
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| 122 | self.__sb.update_views(red, green, blue)
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| 123 | else:
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| 124 | self.update_yourself(red, green, blue)
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| 125 | self.__red, self.__green, self.__blue = red, green, blue
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| 126 |
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| 127 | def __toggleupdate(self, event=None):
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| 128 | if self.__uoc.get():
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| 129 | self.__sb.update_views(self.__red, self.__green, self.__blue)
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| 130 |
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| 131 | def __quit(self, event=None):
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| 132 | self.__root.quit()
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| 133 |
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| 134 | def withdraw(self, event=None):
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| 135 | self.__root.withdraw()
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| 136 |
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| 137 | def deiconify(self, event=None):
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| 138 | self.__root.deiconify()
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| 139 |
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| 140 | def update_yourself(self, red, green, blue):
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| 141 | canvas = self.__canvas
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| 142 | # turn off the last box
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| 143 | if self.__lastbox:
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| 144 | canvas.itemconfigure(self.__lastbox, outline='')
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| 145 | # turn on the current box
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| 146 | colortag = ColorDB.triplet_to_rrggbb((red, green, blue))
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| 147 | canvas.itemconfigure(colortag, outline='black')
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| 148 | self.__lastbox = colortag
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| 149 | # fill the aliases
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| 150 | self.__aliases.delete(0, END)
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| 151 | try:
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| 152 | aliases = self.__sb.colordb().aliases_of(red, green, blue)[1:]
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| 153 | except ColorDB.BadColor:
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| 154 | self.__aliases.insert(END, '<no matching color>')
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| 155 | return
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| 156 | if not aliases:
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| 157 | self.__aliases.insert(END, '<no aliases>')
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| 158 | else:
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| 159 | for name in aliases:
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| 160 | self.__aliases.insert(END, name)
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| 161 | # maybe scroll the canvas so that the item is visible
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| 162 | if self.__dontcenter:
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| 163 | self.__dontcenter = 0
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| 164 | else:
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| 165 | ig, ig, ig, y1 = canvas.coords(colortag)
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| 166 | ig, ig, ig, y2 = canvas.coords(self.__bboxes[-1])
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| 167 | h = int(canvas['height']) * 0.5
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| 168 | canvas.yview('moveto', (y1-h) / y2)
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| 169 |
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| 170 | def save_options(self, optiondb):
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| 171 | optiondb['UPONCLICK'] = self.__uoc.get()
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| 172 |
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| 173 | def colordb_changed(self, colordb):
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| 174 | self.__canvas.delete('all')
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| 175 | self.__populate()
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