# another what a hack!

            keylabel = Label(keyhintrow, text='%s\n%s' % (upkey, downkey), 

                width=1, font=('Arial', 10), bg='red', fg='white', anchor='c')

            keylabel.pack(side=LEFT, expand=1, fill=X)

            col += 1

        keyhintrow.pack(fill=X, expand=0)

        self.keyhints = keyhintrow

    def setup_key_nudgers(self, tkobject):

        for d, keys in nudge_keys.items():

            for key in keys:

                # lowercase makes full=0

                keysym = "<KeyPress-%s>" % key

                tkobject.bind(keysym, \

                    lambda evt, num=keys.index(key), d=d: \

                        self.got_nudger(num, d))

                # uppercase makes full=1

                keysym = "<KeyPress-%s>" % key.upper()

                keysym = keysym.replace('SEMICOLON', 'colon')

                tkobject.bind(keysym, \

                    lambda evt, num=keys.index(key), d=d: \

                        self.got_nudger(num, d, full=1))

        # Row changing:

        # Page dn, C-n, and ] do down

        # Page up, C-p, and ' do up

        for key in '<Prior> <Next> <Control-n> <Control-p> ' \

                   '<Key-bracketright> <Key-apostrophe>'.split():

            tkobject.bind(key, self.change_row)

    def change_row(self, event):

        diff = 1

        if event.keysym in ('Prior', 'p', 'bracketright'):

            diff = -1

        old_row = self.current_row

        self.current_row += diff

        self.current_row = max(0, self.current_row)

        self.current_row = min(len(self.rows) - 1, self.current_row)

        self.unhighlight_row(old_row)

        self.highlight_row(self.current_row)

        row = self.rows[self.current_row]

        self.keyhints.pack_configure(before=row)

        for col in range(8):

            try:

                subtk = self.slider_table[(self.current_row, col)]

            except KeyError:

            self.send_to_hw(subtk.name, col + 1)

    def got_nudger(self, number, direction, full=0):

        subtk = self.slider_table[(self.current_row, number)]

        if direction == 'up':

            if full:

                subtk.scale.fade(1)

            else:

                subtk.scale.increase()

        else:

            if full:

                subtk.scale.fade(0)

            else:

                subtk.scale.decrease()

    def hw_slider_moved(self, col, value):

        value = int(value * 100) / 100

        try:

            subtk = self.slider_table[(self.current_row, col)]

        except KeyError:

            return # no slider assigned at that column

        subtk.scale.set(value)

    def draw_sliders(self):

        self.tk_focusFollowsMouse()

        rowcount = -1

        col = 0

        last_group = None

        graph = showconfig.getGraph()

        withgroups = sorted((graph.value(sub.uri, L9['group']), sub)

            for sub in self.submasters.get_all_subs())

        for group, sub in withgroups:

            group = graph.value(sub.uri, L9['group'])

            if col == 0 or group != last_group: # make new row

                row = self.make_row()

                rowcount += 1

                col = 0

            current_level = self.current_sub_levels.get(sub.name, 0)

            subtk = self.draw_sub_slider(row, col, sub.name, current_level)

            self.slider_table[(rowcount, col)] = subtk

            self.name_to_subtk[sub.name] = subtk

            def slider_changed(x, y, z, subtk=subtk,

                               col=col, sub=sub, rowcount=rowcount):