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ttk.py
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1626 lines (1161 loc) · 54.9 KB
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"""Ttk wrapper.
This module provides classes to allow using Tk themed widget set.
Ttk is based on a revised and enhanced version of
TIP #48 (http://tip.tcl.tk/48) specified style engine.
Its basic idea is to separate, to the extent possible, the code
implementing a widget's behavior from the code implementing its
appearance. Widget class bindings are primarily responsible for
maintaining the widget state and invoking callbacks, all aspects
of the widgets appearance lies at Themes.
"""
__version__ = "0.3.1"
__author__ = "Guilherme Polo <ggpolo@gmail.com>"
__all__ = ["Button", "Checkbutton", "Combobox", "Entry", "Frame", "Label",
"Labelframe", "LabelFrame", "Menubutton", "Notebook", "Panedwindow",
"PanedWindow", "Progressbar", "Radiobutton", "Scale", "Scrollbar",
"Separator", "Sizegrip", "Style", "Treeview",
# Extensions
"LabeledScale", "OptionMenu",
# functions
"tclobjs_to_py", "setup_master"]
import tkinter
from tkinter import _flatten, _join, _stringify
# Verify if Tk is new enough to not need the Tile package
_REQUIRE_TILE = True if tkinter.TkVersion < 8.5 else False
def _load_tile(master):
if _REQUIRE_TILE:
import os
tilelib = os.environ.get('TILE_LIBRARY')
if tilelib:
# append custom tile path to the list of directories that
# Tcl uses when attempting to resolve packages with the package
# command
master.tk.eval(
'global auto_path; '
'lappend auto_path {%s}' % tilelib)
master.tk.eval('package require tile') # TclError may be raised here
master._tile_loaded = True
def _format_optvalue(value, script=False):
"""Internal function."""
if script:
# if caller passes a Tcl script to tk.call, all the values need to
# be grouped into words (arguments to a command in Tcl dialect)
value = _stringify(value)
elif isinstance(value, (list, tuple)):
value = _join(value)
return value
def _format_optdict(optdict, script=False, ignore=None):
"""Formats optdict to a tuple to pass it to tk.call.
E.g. (script=False):
{'foreground': 'blue', 'padding': [1, 2, 3, 4]} returns:
('-foreground', 'blue', '-padding', '1 2 3 4')"""
opts = []
for opt, value in optdict.items():
if not ignore or opt not in ignore:
opts.append("-%s" % opt)
if value is not None:
opts.append(_format_optvalue(value, script))
return _flatten(opts)
def _mapdict_values(items):
# each value in mapdict is expected to be a sequence, where each item
# is another sequence containing a state (or several) and a value
# E.g. (script=False):
# [('active', 'selected', 'grey'), ('focus', [1, 2, 3, 4])]
# returns:
# ['active selected', 'grey', 'focus', [1, 2, 3, 4]]
opt_val = []
for *state, val in items:
# hacks for bakward compatibility
state[0] # raise IndexError if empty
if len(state) == 1:
# if it is empty (something that evaluates to False), then
# format it to Tcl code to denote the "normal" state
state = state[0] or ''
else:
# group multiple states
state = ' '.join(state) # raise TypeError if not str
opt_val.append(state)
if val is not None:
opt_val.append(val)
return opt_val
def _format_mapdict(mapdict, script=False):
"""Formats mapdict to pass it to tk.call.
E.g. (script=False):
{'expand': [('active', 'selected', 'grey'), ('focus', [1, 2, 3, 4])]}
returns:
('-expand', '{active selected} grey focus {1, 2, 3, 4}')"""
opts = []
for opt, value in mapdict.items():
opts.extend(("-%s" % opt,
_format_optvalue(_mapdict_values(value), script)))
return _flatten(opts)
def _format_elemcreate(etype, script=False, *args, **kw):
"""Formats args and kw according to the given element factory etype."""
spec = None
opts = ()
if etype in ("image", "vsapi"):
if etype == "image": # define an element based on an image
# first arg should be the default image name
iname = args[0]
# next args, if any, are statespec/value pairs which is almost
# a mapdict, but we just need the value
imagespec = _join(_mapdict_values(args[1:]))
spec = "%s %s" % (iname, imagespec)
else:
# define an element whose visual appearance is drawn using the
# Microsoft Visual Styles API which is responsible for the
# themed styles on Windows XP and Vista.
# Availability: Tk 8.6, Windows XP and Vista.
class_name, part_id = args[:2]
statemap = _join(_mapdict_values(args[2:]))
spec = "%s %s %s" % (class_name, part_id, statemap)
opts = _format_optdict(kw, script)
elif etype == "from": # clone an element
# it expects a themename and optionally an element to clone from,
# otherwise it will clone {} (empty element)
spec = args[0] # theme name
if len(args) > 1: # elementfrom specified
opts = (_format_optvalue(args[1], script),)
if script:
spec = '{%s}' % spec
opts = ' '.join(opts)
return spec, opts
def _format_layoutlist(layout, indent=0, indent_size=2):
"""Formats a layout list so we can pass the result to ttk::style
layout and ttk::style settings. Note that the layout doesn't has to
be a list necessarily.
E.g.:
[("Menubutton.background", None),
("Menubutton.button", {"children":
[("Menubutton.focus", {"children":
[("Menubutton.padding", {"children":
[("Menubutton.label", {"side": "left", "expand": 1})]
})]
})]
}),
("Menubutton.indicator", {"side": "right"})
]
returns:
Menubutton.background
Menubutton.button -children {
Menubutton.focus -children {
Menubutton.padding -children {
Menubutton.label -side left -expand 1
}
}
}
Menubutton.indicator -side right"""
script = []
for layout_elem in layout:
elem, opts = layout_elem
opts = opts or {}
fopts = ' '.join(_format_optdict(opts, True, ("children",)))
head = "%s%s%s" % (' ' * indent, elem, (" %s" % fopts) if fopts else '')
if "children" in opts:
script.append(head + " -children {")
indent += indent_size
newscript, indent = _format_layoutlist(opts['children'], indent,
indent_size)
script.append(newscript)
indent -= indent_size
script.append('%s}' % (' ' * indent))
else:
script.append(head)
return '\n'.join(script), indent
def _script_from_settings(settings):
"""Returns an appropriate script, based on settings, according to
theme_settings definition to be used by theme_settings and
theme_create."""
script = []
# a script will be generated according to settings passed, which
# will then be evaluated by Tcl
for name, opts in settings.items():
# will format specific keys according to Tcl code
if opts.get('configure'): # format 'configure'
s = ' '.join(_format_optdict(opts['configure'], True))
script.append("ttk::style configure %s %s;" % (name, s))
if opts.get('map'): # format 'map'
s = ' '.join(_format_mapdict(opts['map'], True))
script.append("ttk::style map %s %s;" % (name, s))
if 'layout' in opts: # format 'layout' which may be empty
if not opts['layout']:
s = 'null' # could be any other word, but this one makes sense
else:
s, _ = _format_layoutlist(opts['layout'])
script.append("ttk::style layout %s {\n%s\n}" % (name, s))
if opts.get('element create'): # format 'element create'
eopts = opts['element create']
etype = eopts[0]
# find where args end, and where kwargs start
argc = 1 # etype was the first one
while argc < len(eopts) and not hasattr(eopts[argc], 'items'):
argc += 1
elemargs = eopts[1:argc]
elemkw = eopts[argc] if argc < len(eopts) and eopts[argc] else {}
spec, opts = _format_elemcreate(etype, True, *elemargs, **elemkw)
script.append("ttk::style element create %s %s %s %s" % (
name, etype, spec, opts))
return '\n'.join(script)
def _dict_from_tcltuple(ttuple, cut_minus=True):
"""Break tuple in pairs, format it properly, then build the return
dict. If cut_minus is True, the supposed '-' prefixing options will
be removed.
ttuple is expected to contain an even number of elements."""
opt_start = 1 if cut_minus else 0
retdict = {}
it = iter(ttuple)
for opt, val in zip(it, it):
retdict[str(opt)[opt_start:]] = val
return tclobjs_to_py(retdict)
def _list_from_statespec(stuple):
"""Construct a list from the given statespec tuple according to the
accepted statespec accepted by _format_mapdict."""
nval = []
for val in stuple:
typename = getattr(val, 'typename', None)
if typename is None:
nval.append(val)
else: # this is a Tcl object
val = str(val)
if typename == 'StateSpec':
val = val.split()
nval.append(val)
it = iter(nval)
return [_flatten(spec) for spec in zip(it, it)]
def _list_from_layouttuple(ltuple):
"""Construct a list from the tuple returned by ttk::layout, this is
somewhat the reverse of _format_layoutlist."""
res = []
indx = 0
while indx < len(ltuple):
name = ltuple[indx]
opts = {}
res.append((name, opts))
indx += 1
while indx < len(ltuple): # grab name's options
opt, val = ltuple[indx:indx + 2]
if not opt.startswith('-'): # found next name
break
opt = opt[1:] # remove the '-' from the option
indx += 2
if opt == 'children':
if (tkinter._default_root and
not tkinter._default_root.wantobjects()):
val = tkinter._default_root.splitlist(val)
val = _list_from_layouttuple(val)
opts[opt] = val
return res
def _val_or_dict(options, func, *args):
"""Format options then call func with args and options and return
the appropriate result.
If no option is specified, a dict is returned. If a option is
specified with the None value, the value for that option is returned.
Otherwise, the function just sets the passed options and the caller
shouldn't be expecting a return value anyway."""
options = _format_optdict(options)
res = func(*(args + options))
if len(options) % 2: # option specified without a value, return its value
return res
if tkinter._default_root:
res = tkinter._default_root.splitlist(res)
return _dict_from_tcltuple(res)
def _convert_stringval(value):
"""Converts a value to, hopefully, a more appropriate Python object."""
value = str(value)
try:
value = int(value)
except (ValueError, TypeError):
pass
return value
def _to_number(x):
if isinstance(x, str):
if '.' in x:
x = float(x)
else:
x = int(x)
return x
def tclobjs_to_py(adict):
"""Returns adict with its values converted from Tcl objects to Python
objects."""
for opt, val in adict.items():
if val and hasattr(val, '__len__') and not isinstance(val, str):
if getattr(val[0], 'typename', None) == 'StateSpec':
val = _list_from_statespec(val)
else:
val = list(map(_convert_stringval, val))
elif hasattr(val, 'typename'): # some other (single) Tcl object
val = _convert_stringval(val)
adict[opt] = val
return adict
def setup_master(master=None):
"""If master is not None, itself is returned. If master is None,
the default master is returned if there is one, otherwise a new
master is created and returned.
If it is not allowed to use the default root and master is None,
RuntimeError is raised."""
if master is None:
if tkinter._support_default_root:
master = tkinter._default_root or tkinter.Tk()
else:
raise RuntimeError(
"No master specified and tkinter is "
"configured to not support default root")
return master
class Style(object):
"""Manipulate style database."""
_name = "ttk::style"
def __init__(self, master=None):
master = setup_master(master)
if not getattr(master, '_tile_loaded', False):
# Load tile now, if needed
_load_tile(master)
self.master = master
self.tk = self.master.tk
def configure(self, style, query_opt=None, **kw):
"""Query or sets the default value of the specified option(s) in
style.
Each key in kw is an option and each value is either a string or
a sequence identifying the value for that option."""
if query_opt is not None:
kw[query_opt] = None
return _val_or_dict(kw, self.tk.call, self._name, "configure", style)
def map(self, style, query_opt=None, **kw):
"""Query or sets dynamic values of the specified option(s) in
style.
Each key in kw is an option and each value should be a list or a
tuple (usually) containing statespecs grouped in tuples, or list,
or something else of your preference. A statespec is compound of
one or more states and then a value."""
if query_opt is not None:
return _list_from_statespec(self.tk.splitlist(
self.tk.call(self._name, "map", style, '-%s' % query_opt)))
return _dict_from_tcltuple(
self.tk.call(self._name, "map", style, *(_format_mapdict(kw))))
def lookup(self, style, option, state=None, default=None):
"""Returns the value specified for option in style.
If state is specified it is expected to be a sequence of one
or more states. If the default argument is set, it is used as
a fallback value in case no specification for option is found."""
state = ' '.join(state) if state else ''
return self.tk.call(self._name, "lookup", style, '-%s' % option,
state, default)
def layout(self, style, layoutspec=None):
"""Define the widget layout for given style. If layoutspec is
omitted, return the layout specification for given style.
layoutspec is expected to be a list or an object different than
None that evaluates to False if you want to "turn off" that style.
If it is a list (or tuple, or something else), each item should be
a tuple where the first item is the layout name and the second item
should have the format described below:
LAYOUTS
A layout can contain the value None, if takes no options, or
a dict of options specifying how to arrange the element.
The layout mechanism uses a simplified version of the pack
geometry manager: given an initial cavity, each element is
allocated a parcel. Valid options/values are:
side: whichside
Specifies which side of the cavity to place the
element; one of top, right, bottom or left. If
omitted, the element occupies the entire cavity.
sticky: nswe
Specifies where the element is placed inside its
allocated parcel.
children: [sublayout... ]
Specifies a list of elements to place inside the
element. Each element is a tuple (or other sequence)
where the first item is the layout name, and the other
is a LAYOUT."""
lspec = None
if layoutspec:
lspec = _format_layoutlist(layoutspec)[0]
elif layoutspec is not None: # will disable the layout ({}, '', etc)
lspec = "null" # could be any other word, but this may make sense
# when calling layout(style) later
return _list_from_layouttuple(self.tk.splitlist(
self.tk.call(self._name, "layout", style, lspec)))
def element_create(self, elementname, etype, *args, **kw):
"""Create a new element in the current theme of given etype."""
spec, opts = _format_elemcreate(etype, False, *args, **kw)
self.tk.call(self._name, "element", "create", elementname, etype,
spec, *opts)
def element_names(self):
"""Returns the list of elements defined in the current theme."""
return self.tk.splitlist(self.tk.call(self._name, "element", "names"))
def element_options(self, elementname):
"""Return the list of elementname's options."""
return self.tk.splitlist(self.tk.call(self._name, "element", "options", elementname))
def theme_create(self, themename, parent=None, settings=None):
"""Creates a new theme.
It is an error if themename already exists. If parent is
specified, the new theme will inherit styles, elements and
layouts from the specified parent theme. If settings are present,
they are expected to have the same syntax used for theme_settings."""
script = _script_from_settings(settings) if settings else ''
if parent:
self.tk.call(self._name, "theme", "create", themename,
"-parent", parent, "-settings", script)
else:
self.tk.call(self._name, "theme", "create", themename,
"-settings", script)
def theme_settings(self, themename, settings):
"""Temporarily sets the current theme to themename, apply specified
settings and then restore the previous theme.
Each key in settings is a style and each value may contain the
keys 'configure', 'map', 'layout' and 'element create' and they
are expected to have the same format as specified by the methods
configure, map, layout and element_create respectively."""
script = _script_from_settings(settings)
self.tk.call(self._name, "theme", "settings", themename, script)
def theme_names(self):
"""Returns a list of all known themes."""
return self.tk.splitlist(self.tk.call(self._name, "theme", "names"))
def theme_use(self, themename=None):
"""If themename is None, returns the theme in use, otherwise, set
the current theme to themename, refreshes all widgets and emits
a <<ThemeChanged>> event."""
if themename is None:
# Starting on Tk 8.6, checking this global is no longer needed
# since it allows doing self.tk.call(self._name, "theme", "use")
return self.tk.eval("return $ttk::currentTheme")
# using "ttk::setTheme" instead of "ttk::style theme use" causes
# the variable currentTheme to be updated, also, ttk::setTheme calls
# "ttk::style theme use" in order to change theme.
self.tk.call("ttk::setTheme", themename)
class Widget(tkinter.Widget):
"""Base class for Tk themed widgets."""
def __init__(self, master, widgetname, kw=None):
"""Constructs a Ttk Widget with the parent master.
STANDARD OPTIONS
class, cursor, takefocus, style
SCROLLABLE WIDGET OPTIONS
xscrollcommand, yscrollcommand
LABEL WIDGET OPTIONS
text, textvariable, underline, image, compound, width
WIDGET STATES
active, disabled, focus, pressed, selected, background,
readonly, alternate, invalid
"""
master = setup_master(master)
if not getattr(master, '_tile_loaded', False):
# Load tile now, if needed
_load_tile(master)
tkinter.Widget.__init__(self, master, widgetname, kw=kw)
def identify(self, x, y):
"""Returns the name of the element at position x, y, or the empty
string if the point does not lie within any element.
x and y are pixel coordinates relative to the widget."""
return self.tk.call(self._w, "identify", x, y)
def instate(self, statespec, callback=None, *args, **kw):
"""Test the widget's state.
If callback is not specified, returns True if the widget state
matches statespec and False otherwise. If callback is specified,
then it will be invoked with *args, **kw if the widget state
matches statespec. statespec is expected to be a sequence."""
ret = self.tk.getboolean(
self.tk.call(self._w, "instate", ' '.join(statespec)))
if ret and callback:
return callback(*args, **kw)
return bool(ret)
def state(self, statespec=None):
"""Modify or inquire widget state.
Widget state is returned if statespec is None, otherwise it is
set according to the statespec flags and then a new state spec
is returned indicating which flags were changed. statespec is
expected to be a sequence."""
if statespec is not None:
statespec = ' '.join(statespec)
return self.tk.splitlist(str(self.tk.call(self._w, "state", statespec)))
class Button(Widget):
"""Ttk Button widget, displays a textual label and/or image, and
evaluates a command when pressed."""
def __init__(self, master=None, **kw):
"""Construct a Ttk Button widget with the parent master.
STANDARD OPTIONS
class, compound, cursor, image, state, style, takefocus,
text, textvariable, underline, width
WIDGET-SPECIFIC OPTIONS
command, default, width
"""
Widget.__init__(self, master, "ttk::button", kw)
def invoke(self):
"""Invokes the command associated with the button."""
return self.tk.call(self._w, "invoke")
class Checkbutton(Widget):
"""Ttk Checkbutton widget which is either in on- or off-state."""
def __init__(self, master=None, **kw):
"""Construct a Ttk Checkbutton widget with the parent master.
STANDARD OPTIONS
class, compound, cursor, image, state, style, takefocus,
text, textvariable, underline, width
WIDGET-SPECIFIC OPTIONS
command, offvalue, onvalue, variable
"""
Widget.__init__(self, master, "ttk::checkbutton", kw)
def invoke(self):
"""Toggles between the selected and deselected states and
invokes the associated command. If the widget is currently
selected, sets the option variable to the offvalue option
and deselects the widget; otherwise, sets the option variable
to the option onvalue.
Returns the result of the associated command."""
return self.tk.call(self._w, "invoke")
class Entry(Widget, tkinter.Entry):
"""Ttk Entry widget displays a one-line text string and allows that
string to be edited by the user."""
def __init__(self, master=None, widget=None, **kw):
"""Constructs a Ttk Entry widget with the parent master.
STANDARD OPTIONS
class, cursor, style, takefocus, xscrollcommand
WIDGET-SPECIFIC OPTIONS
exportselection, invalidcommand, justify, show, state,
textvariable, validate, validatecommand, width
VALIDATION MODES
none, key, focus, focusin, focusout, all
"""
Widget.__init__(self, master, widget or "ttk::entry", kw)
def bbox(self, index):
"""Return a tuple of (x, y, width, height) which describes the
bounding box of the character given by index."""
return self._getints(self.tk.call(self._w, "bbox", index))
def identify(self, x, y):
"""Returns the name of the element at position x, y, or the
empty string if the coordinates are outside the window."""
return self.tk.call(self._w, "identify", x, y)
def validate(self):
"""Force revalidation, independent of the conditions specified
by the validate option. Returns False if validation fails, True
if it succeeds. Sets or clears the invalid state accordingly."""
return bool(self.tk.getboolean(self.tk.call(self._w, "validate")))
class Combobox(Entry):
"""Ttk Combobox widget combines a text field with a pop-down list of
values."""
def __init__(self, master=None, **kw):
"""Construct a Ttk Combobox widget with the parent master.
STANDARD OPTIONS
class, cursor, style, takefocus
WIDGET-SPECIFIC OPTIONS
exportselection, justify, height, postcommand, state,
textvariable, values, width
"""
Entry.__init__(self, master, "ttk::combobox", **kw)
def current(self, newindex=None):
"""If newindex is supplied, sets the combobox value to the
element at position newindex in the list of values. Otherwise,
returns the index of the current value in the list of values
or -1 if the current value does not appear in the list."""
if newindex is None:
return self.tk.getint(self.tk.call(self._w, "current"))
return self.tk.call(self._w, "current", newindex)
def set(self, value):
"""Sets the value of the combobox to value."""
self.tk.call(self._w, "set", value)
class Frame(Widget):
"""Ttk Frame widget is a container, used to group other widgets
together."""
def __init__(self, master=None, **kw):
"""Construct a Ttk Frame with parent master.
STANDARD OPTIONS
class, cursor, style, takefocus
WIDGET-SPECIFIC OPTIONS
borderwidth, relief, padding, width, height
"""
Widget.__init__(self, master, "ttk::frame", kw)
class Label(Widget):
"""Ttk Label widget displays a textual label and/or image."""
def __init__(self, master=None, **kw):
"""Construct a Ttk Label with parent master.
STANDARD OPTIONS
class, compound, cursor, image, style, takefocus, text,
textvariable, underline, width
WIDGET-SPECIFIC OPTIONS
anchor, background, font, foreground, justify, padding,
relief, text, wraplength
"""
Widget.__init__(self, master, "ttk::label", kw)
class Labelframe(Widget):
"""Ttk Labelframe widget is a container used to group other widgets
together. It has an optional label, which may be a plain text string
or another widget."""
def __init__(self, master=None, **kw):
"""Construct a Ttk Labelframe with parent master.
STANDARD OPTIONS
class, cursor, style, takefocus
WIDGET-SPECIFIC OPTIONS
labelanchor, text, underline, padding, labelwidget, width,
height
"""
Widget.__init__(self, master, "ttk::labelframe", kw)
LabelFrame = Labelframe # tkinter name compatibility
class Menubutton(Widget):
"""Ttk Menubutton widget displays a textual label and/or image, and
displays a menu when pressed."""
def __init__(self, master=None, **kw):
"""Construct a Ttk Menubutton with parent master.
STANDARD OPTIONS
class, compound, cursor, image, state, style, takefocus,
text, textvariable, underline, width
WIDGET-SPECIFIC OPTIONS
direction, menu
"""
Widget.__init__(self, master, "ttk::menubutton", kw)
class Notebook(Widget):
"""Ttk Notebook widget manages a collection of windows and displays
a single one at a time. Each child window is associated with a tab,
which the user may select to change the currently-displayed window."""
def __init__(self, master=None, **kw):
"""Construct a Ttk Notebook with parent master.
STANDARD OPTIONS
class, cursor, style, takefocus
WIDGET-SPECIFIC OPTIONS
height, padding, width
TAB OPTIONS
state, sticky, padding, text, image, compound, underline
TAB IDENTIFIERS (tab_id)
The tab_id argument found in several methods may take any of
the following forms:
* An integer between zero and the number of tabs
* The name of a child window
* A positional specification of the form "@x,y", which
defines the tab
* The string "current", which identifies the
currently-selected tab
* The string "end", which returns the number of tabs (only
valid for method index)
"""
Widget.__init__(self, master, "ttk::notebook", kw)
def add(self, child, **kw):
"""Adds a new tab to the notebook.
If window is currently managed by the notebook but hidden, it is
restored to its previous position."""
self.tk.call(self._w, "add", child, *(_format_optdict(kw)))
def forget(self, tab_id):
"""Removes the tab specified by tab_id, unmaps and unmanages the
associated window."""
self.tk.call(self._w, "forget", tab_id)
def hide(self, tab_id):
"""Hides the tab specified by tab_id.
The tab will not be displayed, but the associated window remains
managed by the notebook and its configuration remembered. Hidden
tabs may be restored with the add command."""
self.tk.call(self._w, "hide", tab_id)
def identify(self, x, y):
"""Returns the name of the tab element at position x, y, or the
empty string if none."""
return self.tk.call(self._w, "identify", x, y)
def index(self, tab_id):
"""Returns the numeric index of the tab specified by tab_id, or
the total number of tabs if tab_id is the string "end"."""
return self.tk.getint(self.tk.call(self._w, "index", tab_id))
def insert(self, pos, child, **kw):
"""Inserts a pane at the specified position.
pos is either the string end, an integer index, or the name of
a managed child. If child is already managed by the notebook,
moves it to the specified position."""
self.tk.call(self._w, "insert", pos, child, *(_format_optdict(kw)))
def select(self, tab_id=None):
"""Selects the specified tab.
The associated child window will be displayed, and the
previously-selected window (if different) is unmapped. If tab_id
is omitted, returns the widget name of the currently selected
pane."""
return self.tk.call(self._w, "select", tab_id)
def tab(self, tab_id, option=None, **kw):
"""Query or modify the options of the specific tab_id.
If kw is not given, returns a dict of the tab option values. If option
is specified, returns the value of that option. Otherwise, sets the
options to the corresponding values."""
if option is not None:
kw[option] = None
return _val_or_dict(kw, self.tk.call, self._w, "tab", tab_id)
def tabs(self):
"""Returns a list of windows managed by the notebook."""
return self.tk.splitlist(self.tk.call(self._w, "tabs") or ())
def enable_traversal(self):
"""Enable keyboard traversal for a toplevel window containing
this notebook.
This will extend the bindings for the toplevel window containing
this notebook as follows:
Control-Tab: selects the tab following the currently selected
one
Shift-Control-Tab: selects the tab preceding the currently
selected one
Alt-K: where K is the mnemonic (underlined) character of any
tab, will select that tab.
Multiple notebooks in a single toplevel may be enabled for
traversal, including nested notebooks. However, notebook traversal
only works properly if all panes are direct children of the
notebook."""
# The only, and good, difference I see is about mnemonics, which works
# after calling this method. Control-Tab and Shift-Control-Tab always
# works (here at least).
self.tk.call("ttk::notebook::enableTraversal", self._w)
class Panedwindow(Widget, tkinter.PanedWindow):
"""Ttk Panedwindow widget displays a number of subwindows, stacked
either vertically or horizontally."""
def __init__(self, master=None, **kw):
"""Construct a Ttk Panedwindow with parent master.
STANDARD OPTIONS
class, cursor, style, takefocus
WIDGET-SPECIFIC OPTIONS
orient, width, height
PANE OPTIONS
weight
"""
Widget.__init__(self, master, "ttk::panedwindow", kw)
forget = tkinter.PanedWindow.forget # overrides Pack.forget
def insert(self, pos, child, **kw):
"""Inserts a pane at the specified positions.
pos is either the string end, and integer index, or the name
of a child. If child is already managed by the paned window,
moves it to the specified position."""
self.tk.call(self._w, "insert", pos, child, *(_format_optdict(kw)))
def pane(self, pane, option=None, **kw):
"""Query or modify the options of the specified pane.
pane is either an integer index or the name of a managed subwindow.
If kw is not given, returns a dict of the pane option values. If
option is specified then the value for that option is returned.
Otherwise, sets the options to the corresponding values."""
if option is not None:
kw[option] = None
return _val_or_dict(kw, self.tk.call, self._w, "pane", pane)
def sashpos(self, index, newpos=None):
"""If newpos is specified, sets the position of sash number index.
May adjust the positions of adjacent sashes to ensure that
positions are monotonically increasing. Sash positions are further
constrained to be between 0 and the total size of the widget.
Returns the new position of sash number index."""
return self.tk.getint(self.tk.call(self._w, "sashpos", index, newpos))
PanedWindow = Panedwindow # tkinter name compatibility