1621 lines
54 KiB
Python
1621 lines
54 KiB
Python
"""Ttk wrapper.
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This module provides classes to allow using Tk themed widget set.
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Ttk is based on a revised and enhanced version of
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TIP #48 (http://tip.tcl.tk/48) specified style engine.
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Its basic idea is to separate, to the extent possible, the code
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implementing a widget's behavior from the code implementing its
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appearance. Widget class bindings are primarily responsible for
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maintaining the widget state and invoking callbacks, all aspects
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of the widgets appearance lies at Themes.
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"""
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__version__ = "0.3.1"
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__author__ = "Guilherme Polo <ggpolo@gmail.com>"
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__all__ = ["Button", "Checkbutton", "Combobox", "Entry", "Frame", "Label",
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"Labelframe", "LabelFrame", "Menubutton", "Notebook", "Panedwindow",
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"PanedWindow", "Progressbar", "Radiobutton", "Scale", "Scrollbar",
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"Separator", "Sizegrip", "Style", "Treeview",
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# Extensions
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"LabeledScale", "OptionMenu",
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# functions
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"tclobjs_to_py", "setup_master"]
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import tkinter
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from tkinter import _flatten, _join, _stringify, _splitdict
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# Verify if Tk is new enough to not need the Tile package
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_REQUIRE_TILE = True if tkinter.TkVersion < 8.5 else False
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def _load_tile(master):
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if _REQUIRE_TILE:
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import os
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tilelib = os.environ.get('TILE_LIBRARY')
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if tilelib:
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# append custom tile path to the list of directories that
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# Tcl uses when attempting to resolve packages with the package
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# command
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master.tk.eval(
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'global auto_path; '
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'lappend auto_path {%s}' % tilelib)
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master.tk.eval('package require tile') # TclError may be raised here
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master._tile_loaded = True
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def _format_optvalue(value, script=False):
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"""Internal function."""
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if script:
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# if caller passes a Tcl script to tk.call, all the values need to
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# be grouped into words (arguments to a command in Tcl dialect)
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value = _stringify(value)
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elif isinstance(value, (list, tuple)):
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value = _join(value)
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return value
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def _format_optdict(optdict, script=False, ignore=None):
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"""Formats optdict to a tuple to pass it to tk.call.
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E.g. (script=False):
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{'foreground': 'blue', 'padding': [1, 2, 3, 4]} returns:
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('-foreground', 'blue', '-padding', '1 2 3 4')"""
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opts = []
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for opt, value in optdict.items():
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if not ignore or opt not in ignore:
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opts.append("-%s" % opt)
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if value is not None:
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opts.append(_format_optvalue(value, script))
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return _flatten(opts)
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def _mapdict_values(items):
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# each value in mapdict is expected to be a sequence, where each item
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# is another sequence containing a state (or several) and a value
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# E.g. (script=False):
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# [('active', 'selected', 'grey'), ('focus', [1, 2, 3, 4])]
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# returns:
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# ['active selected', 'grey', 'focus', [1, 2, 3, 4]]
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opt_val = []
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for *state, val in items:
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# hacks for bakward compatibility
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state[0] # raise IndexError if empty
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if len(state) == 1:
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# if it is empty (something that evaluates to False), then
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# format it to Tcl code to denote the "normal" state
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state = state[0] or ''
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else:
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# group multiple states
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state = ' '.join(state) # raise TypeError if not str
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opt_val.append(state)
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if val is not None:
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opt_val.append(val)
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return opt_val
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def _format_mapdict(mapdict, script=False):
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"""Formats mapdict to pass it to tk.call.
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E.g. (script=False):
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{'expand': [('active', 'selected', 'grey'), ('focus', [1, 2, 3, 4])]}
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returns:
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('-expand', '{active selected} grey focus {1, 2, 3, 4}')"""
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opts = []
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for opt, value in mapdict.items():
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opts.extend(("-%s" % opt,
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_format_optvalue(_mapdict_values(value), script)))
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return _flatten(opts)
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def _format_elemcreate(etype, script=False, *args, **kw):
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"""Formats args and kw according to the given element factory etype."""
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spec = None
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opts = ()
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if etype in ("image", "vsapi"):
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if etype == "image": # define an element based on an image
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# first arg should be the default image name
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iname = args[0]
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# next args, if any, are statespec/value pairs which is almost
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# a mapdict, but we just need the value
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imagespec = _join(_mapdict_values(args[1:]))
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spec = "%s %s" % (iname, imagespec)
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else:
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# define an element whose visual appearance is drawn using the
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# Microsoft Visual Styles API which is responsible for the
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# themed styles on Windows XP and Vista.
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# Availability: Tk 8.6, Windows XP and Vista.
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class_name, part_id = args[:2]
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statemap = _join(_mapdict_values(args[2:]))
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spec = "%s %s %s" % (class_name, part_id, statemap)
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opts = _format_optdict(kw, script)
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elif etype == "from": # clone an element
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# it expects a themename and optionally an element to clone from,
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# otherwise it will clone {} (empty element)
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spec = args[0] # theme name
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if len(args) > 1: # elementfrom specified
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opts = (_format_optvalue(args[1], script),)
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if script:
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spec = '{%s}' % spec
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opts = ' '.join(opts)
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return spec, opts
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def _format_layoutlist(layout, indent=0, indent_size=2):
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"""Formats a layout list so we can pass the result to ttk::style
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layout and ttk::style settings. Note that the layout doesn't has to
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be a list necessarily.
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E.g.:
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[("Menubutton.background", None),
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("Menubutton.button", {"children":
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[("Menubutton.focus", {"children":
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[("Menubutton.padding", {"children":
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[("Menubutton.label", {"side": "left", "expand": 1})]
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})]
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})]
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}),
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("Menubutton.indicator", {"side": "right"})
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]
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returns:
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Menubutton.background
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Menubutton.button -children {
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Menubutton.focus -children {
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Menubutton.padding -children {
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Menubutton.label -side left -expand 1
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}
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}
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}
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Menubutton.indicator -side right"""
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script = []
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for layout_elem in layout:
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elem, opts = layout_elem
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opts = opts or {}
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fopts = ' '.join(_format_optdict(opts, True, ("children",)))
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head = "%s%s%s" % (' ' * indent, elem, (" %s" % fopts) if fopts else '')
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if "children" in opts:
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script.append(head + " -children {")
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indent += indent_size
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newscript, indent = _format_layoutlist(opts['children'], indent,
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indent_size)
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script.append(newscript)
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indent -= indent_size
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script.append('%s}' % (' ' * indent))
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else:
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script.append(head)
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return '\n'.join(script), indent
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def _script_from_settings(settings):
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"""Returns an appropriate script, based on settings, according to
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theme_settings definition to be used by theme_settings and
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theme_create."""
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script = []
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# a script will be generated according to settings passed, which
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# will then be evaluated by Tcl
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for name, opts in settings.items():
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# will format specific keys according to Tcl code
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if opts.get('configure'): # format 'configure'
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s = ' '.join(_format_optdict(opts['configure'], True))
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script.append("ttk::style configure %s %s;" % (name, s))
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if opts.get('map'): # format 'map'
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s = ' '.join(_format_mapdict(opts['map'], True))
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script.append("ttk::style map %s %s;" % (name, s))
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if 'layout' in opts: # format 'layout' which may be empty
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if not opts['layout']:
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s = 'null' # could be any other word, but this one makes sense
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else:
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s, _ = _format_layoutlist(opts['layout'])
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script.append("ttk::style layout %s {\n%s\n}" % (name, s))
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if opts.get('element create'): # format 'element create'
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eopts = opts['element create']
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etype = eopts[0]
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# find where args end, and where kwargs start
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argc = 1 # etype was the first one
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while argc < len(eopts) and not hasattr(eopts[argc], 'items'):
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argc += 1
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elemargs = eopts[1:argc]
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elemkw = eopts[argc] if argc < len(eopts) and eopts[argc] else {}
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spec, opts = _format_elemcreate(etype, True, *elemargs, **elemkw)
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script.append("ttk::style element create %s %s %s %s" % (
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name, etype, spec, opts))
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return '\n'.join(script)
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def _list_from_statespec(stuple):
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"""Construct a list from the given statespec tuple according to the
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accepted statespec accepted by _format_mapdict."""
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nval = []
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for val in stuple:
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typename = getattr(val, 'typename', None)
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if typename is None:
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nval.append(val)
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else: # this is a Tcl object
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val = str(val)
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if typename == 'StateSpec':
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val = val.split()
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nval.append(val)
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it = iter(nval)
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return [_flatten(spec) for spec in zip(it, it)]
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def _list_from_layouttuple(tk, ltuple):
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"""Construct a list from the tuple returned by ttk::layout, this is
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somewhat the reverse of _format_layoutlist."""
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ltuple = tk.splitlist(ltuple)
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res = []
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indx = 0
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while indx < len(ltuple):
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name = ltuple[indx]
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opts = {}
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res.append((name, opts))
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indx += 1
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while indx < len(ltuple): # grab name's options
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opt, val = ltuple[indx:indx + 2]
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if not opt.startswith('-'): # found next name
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break
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opt = opt[1:] # remove the '-' from the option
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indx += 2
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if opt == 'children':
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val = _list_from_layouttuple(tk, val)
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opts[opt] = val
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return res
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def _val_or_dict(tk, options, *args):
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"""Format options then call Tk command with args and options and return
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the appropriate result.
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If no option is specified, a dict is returned. If an option is
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specified with the None value, the value for that option is returned.
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Otherwise, the function just sets the passed options and the caller
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shouldn't be expecting a return value anyway."""
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options = _format_optdict(options)
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res = tk.call(*(args + options))
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if len(options) % 2: # option specified without a value, return its value
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return res
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return _splitdict(tk, res, conv=_tclobj_to_py)
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def _convert_stringval(value):
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"""Converts a value to, hopefully, a more appropriate Python object."""
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value = str(value)
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try:
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value = int(value)
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except (ValueError, TypeError):
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pass
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return value
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def _to_number(x):
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if isinstance(x, str):
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if '.' in x:
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x = float(x)
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else:
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x = int(x)
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return x
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def _tclobj_to_py(val):
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"""Return value converted from Tcl object to Python object."""
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if val and hasattr(val, '__len__') and not isinstance(val, str):
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if getattr(val[0], 'typename', None) == 'StateSpec':
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val = _list_from_statespec(val)
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else:
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val = list(map(_convert_stringval, val))
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elif hasattr(val, 'typename'): # some other (single) Tcl object
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val = _convert_stringval(val)
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return val
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def tclobjs_to_py(adict):
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"""Returns adict with its values converted from Tcl objects to Python
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objects."""
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for opt, val in adict.items():
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adict[opt] = _tclobj_to_py(val)
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return adict
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def setup_master(master=None):
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"""If master is not None, itself is returned. If master is None,
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the default master is returned if there is one, otherwise a new
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master is created and returned.
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If it is not allowed to use the default root and master is None,
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RuntimeError is raised."""
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if master is None:
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if tkinter._support_default_root:
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master = tkinter._default_root or tkinter.Tk()
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else:
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raise RuntimeError(
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"No master specified and tkinter is "
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"configured to not support default root")
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return master
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class Style(object):
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"""Manipulate style database."""
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_name = "ttk::style"
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def __init__(self, master=None):
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master = setup_master(master)
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if not getattr(master, '_tile_loaded', False):
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# Load tile now, if needed
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_load_tile(master)
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self.master = master
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self.tk = self.master.tk
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def configure(self, style, query_opt=None, **kw):
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"""Query or sets the default value of the specified option(s) in
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style.
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Each key in kw is an option and each value is either a string or
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a sequence identifying the value for that option."""
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if query_opt is not None:
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kw[query_opt] = None
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return _val_or_dict(self.tk, kw, self._name, "configure", style)
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def map(self, style, query_opt=None, **kw):
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"""Query or sets dynamic values of the specified option(s) in
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style.
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Each key in kw is an option and each value should be a list or a
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tuple (usually) containing statespecs grouped in tuples, or list,
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or something else of your preference. A statespec is compound of
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one or more states and then a value."""
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if query_opt is not None:
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return _list_from_statespec(self.tk.splitlist(
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self.tk.call(self._name, "map", style, '-%s' % query_opt)))
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return _splitdict(
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self.tk,
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self.tk.call(self._name, "map", style, *_format_mapdict(kw)),
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conv=_tclobj_to_py)
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def lookup(self, style, option, state=None, default=None):
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"""Returns the value specified for option in style.
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If state is specified it is expected to be a sequence of one
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or more states. If the default argument is set, it is used as
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a fallback value in case no specification for option is found."""
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state = ' '.join(state) if state else ''
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return self.tk.call(self._name, "lookup", style, '-%s' % option,
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state, default)
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def layout(self, style, layoutspec=None):
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"""Define the widget layout for given style. If layoutspec is
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omitted, return the layout specification for given style.
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layoutspec is expected to be a list or an object different than
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None that evaluates to False if you want to "turn off" that style.
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If it is a list (or tuple, or something else), each item should be
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a tuple where the first item is the layout name and the second item
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should have the format described below:
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LAYOUTS
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A layout can contain the value None, if takes no options, or
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a dict of options specifying how to arrange the element.
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The layout mechanism uses a simplified version of the pack
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geometry manager: given an initial cavity, each element is
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allocated a parcel. Valid options/values are:
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side: whichside
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Specifies which side of the cavity to place the
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element; one of top, right, bottom or left. If
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omitted, the element occupies the entire cavity.
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sticky: nswe
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Specifies where the element is placed inside its
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allocated parcel.
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children: [sublayout... ]
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Specifies a list of elements to place inside the
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element. Each element is a tuple (or other sequence)
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where the first item is the layout name, and the other
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is a LAYOUT."""
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lspec = None
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if layoutspec:
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lspec = _format_layoutlist(layoutspec)[0]
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elif layoutspec is not None: # will disable the layout ({}, '', etc)
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lspec = "null" # could be any other word, but this may make sense
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# when calling layout(style) later
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return _list_from_layouttuple(self.tk,
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self.tk.call(self._name, "layout", style, lspec))
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def element_create(self, elementname, etype, *args, **kw):
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"""Create a new element in the current theme of given etype."""
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spec, opts = _format_elemcreate(etype, False, *args, **kw)
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self.tk.call(self._name, "element", "create", elementname, etype,
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spec, *opts)
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def element_names(self):
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"""Returns the list of elements defined in the current theme."""
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return self.tk.splitlist(self.tk.call(self._name, "element", "names"))
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def element_options(self, elementname):
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"""Return the list of elementname's options."""
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return self.tk.splitlist(self.tk.call(self._name, "element", "options", elementname))
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def theme_create(self, themename, parent=None, settings=None):
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"""Creates a new theme.
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It is an error if themename already exists. If parent is
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specified, the new theme will inherit styles, elements and
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layouts from the specified parent theme. If settings are present,
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they are expected to have the same syntax used for theme_settings."""
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script = _script_from_settings(settings) if settings else ''
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if parent:
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self.tk.call(self._name, "theme", "create", themename,
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"-parent", parent, "-settings", script)
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else:
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self.tk.call(self._name, "theme", "create", themename,
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"-settings", script)
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def theme_settings(self, themename, settings):
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"""Temporarily sets the current theme to themename, apply specified
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settings and then restore the previous theme.
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Each key in settings is a style and each value may contain the
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keys 'configure', 'map', 'layout' and 'element create' and they
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are expected to have the same format as specified by the methods
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configure, map, layout and element_create respectively."""
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script = _script_from_settings(settings)
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self.tk.call(self._name, "theme", "settings", themename, script)
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def theme_names(self):
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"""Returns a list of all known themes."""
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return self.tk.splitlist(self.tk.call(self._name, "theme", "names"))
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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 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 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(self.tk, kw, 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(self.tk, kw, 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
|
|
|
|
|
|
class Progressbar(Widget):
|
|
"""Ttk Progressbar widget shows the status of a long-running
|
|
operation. They can operate in two modes: determinate mode shows the
|
|
amount completed relative to the total amount of work to be done, and
|
|
indeterminate mode provides an animated display to let the user know
|
|
that something is happening."""
|
|
|
|
def __init__(self, master=None, **kw):
|
|
"""Construct a Ttk Progressbar with parent master.
|
|
|
|
STANDARD OPTIONS
|
|
|
|
class, cursor, style, takefocus
|
|
|
|
WIDGET-SPECIFIC OPTIONS
|
|
|
|
orient, length, mode, maximum, value, variable, phase
|
|
"""
|
|
Widget.__init__(self, master, "ttk::progressbar", kw)
|
|
|
|
|
|
def start(self, interval=None):
|
|
"""Begin autoincrement mode: schedules a recurring timer event
|
|
that calls method step every interval milliseconds.
|
|
|
|
interval defaults to 50 milliseconds (20 steps/second) if ommited."""
|
|
self.tk.call(self._w, "start", interval)
|
|
|
|
|
|
def step(self, amount=None):
|
|
"""Increments the value option by amount.
|
|
|
|
amount defaults to 1.0 if omitted."""
|
|
self.tk.call(self._w, "step", amount)
|
|
|
|
|
|
def stop(self):
|
|
"""Stop autoincrement mode: cancels any recurring timer event
|
|
initiated by start."""
|
|
self.tk.call(self._w, "stop")
|
|
|
|
|
|
class Radiobutton(Widget):
|
|
"""Ttk Radiobutton widgets are used in groups to show or change a
|
|
set of mutually-exclusive options."""
|
|
|
|
def __init__(self, master=None, **kw):
|
|
"""Construct a Ttk Radiobutton with parent master.
|
|
|
|
STANDARD OPTIONS
|
|
|
|
class, compound, cursor, image, state, style, takefocus,
|
|
text, textvariable, underline, width
|
|
|
|
WIDGET-SPECIFIC OPTIONS
|
|
|
|
command, value, variable
|
|
"""
|
|
Widget.__init__(self, master, "ttk::radiobutton", kw)
|
|
|
|
|
|
def invoke(self):
|
|
"""Sets the option variable to the option value, selects the
|
|
widget, and invokes the associated command.
|
|
|
|
Returns the result of the command, or an empty string if
|
|
no command is specified."""
|
|
return self.tk.call(self._w, "invoke")
|
|
|
|
|
|
class Scale(Widget, tkinter.Scale):
|
|
"""Ttk Scale widget is typically used to control the numeric value of
|
|
a linked variable that varies uniformly over some range."""
|
|
|
|
def __init__(self, master=None, **kw):
|
|
"""Construct a Ttk Scale with parent master.
|
|
|
|
STANDARD OPTIONS
|
|
|
|
class, cursor, style, takefocus
|
|
|
|
WIDGET-SPECIFIC OPTIONS
|
|
|
|
command, from, length, orient, to, value, variable
|
|
"""
|
|
Widget.__init__(self, master, "ttk::scale", kw)
|
|
|
|
|
|
def configure(self, cnf=None, **kw):
|
|
"""Modify or query scale options.
|
|
|
|
Setting a value for any of the "from", "from_" or "to" options
|
|
generates a <<RangeChanged>> event."""
|
|
if cnf:
|
|
kw.update(cnf)
|
|
Widget.configure(self, **kw)
|
|
if any(['from' in kw, 'from_' in kw, 'to' in kw]):
|
|
self.event_generate('<<RangeChanged>>')
|
|
|
|
|
|
def get(self, x=None, y=None):
|
|
"""Get the current value of the value option, or the value
|
|
corresponding to the coordinates x, y if they are specified.
|
|
|
|
x and y are pixel coordinates relative to the scale widget
|
|
origin."""
|
|
return self.tk.call(self._w, 'get', x, y)
|
|
|
|
|
|
class Scrollbar(Widget, tkinter.Scrollbar):
|
|
"""Ttk Scrollbar controls the viewport of a scrollable widget."""
|
|
|
|
def __init__(self, master=None, **kw):
|
|
"""Construct a Ttk Scrollbar with parent master.
|
|
|
|
STANDARD OPTIONS
|
|
|
|
class, cursor, style, takefocus
|
|
|
|
WIDGET-SPECIFIC OPTIONS
|
|
|
|
command, orient
|
|
"""
|
|
Widget.__init__(self, master, "ttk::scrollbar", kw)
|
|
|
|
|
|
class Separator(Widget):
|
|
"""Ttk Separator widget displays a horizontal or vertical separator
|
|
bar."""
|
|
|
|
def __init__(self, master=None, **kw):
|
|
"""Construct a Ttk Separator with parent master.
|
|
|
|
STANDARD OPTIONS
|
|
|
|
class, cursor, style, takefocus
|
|
|
|
WIDGET-SPECIFIC OPTIONS
|
|
|
|
orient
|
|
"""
|
|
Widget.__init__(self, master, "ttk::separator", kw)
|
|
|
|
|
|
class Sizegrip(Widget):
|
|
"""Ttk Sizegrip allows the user to resize the containing toplevel
|
|
window by pressing and dragging the grip."""
|
|
|
|
def __init__(self, master=None, **kw):
|
|
"""Construct a Ttk Sizegrip with parent master.
|
|
|
|
STANDARD OPTIONS
|
|
|
|
class, cursor, state, style, takefocus
|
|
"""
|
|
Widget.__init__(self, master, "ttk::sizegrip", kw)
|
|
|
|
|
|
class Treeview(Widget, tkinter.XView, tkinter.YView):
|
|
"""Ttk Treeview widget displays a hierarchical collection of items.
|
|
|
|
Each item has a textual label, an optional image, and an optional list
|
|
of data values. The data values are displayed in successive columns
|
|
after the tree label."""
|
|
|
|
def __init__(self, master=None, **kw):
|
|
"""Construct a Ttk Treeview with parent master.
|
|
|
|
STANDARD OPTIONS
|
|
|
|
class, cursor, style, takefocus, xscrollcommand,
|
|
yscrollcommand
|
|
|
|
WIDGET-SPECIFIC OPTIONS
|
|
|
|
columns, displaycolumns, height, padding, selectmode, show
|
|
|
|
ITEM OPTIONS
|
|
|
|
text, image, values, open, tags
|
|
|
|
TAG OPTIONS
|
|
|
|
foreground, background, font, image
|
|
"""
|
|
Widget.__init__(self, master, "ttk::treeview", kw)
|
|
|
|
|
|
def bbox(self, item, column=None):
|
|
"""Returns the bounding box (relative to the treeview widget's
|
|
window) of the specified item in the form x y width height.
|
|
|
|
If column is specified, returns the bounding box of that cell.
|
|
If the item is not visible (i.e., if it is a descendant of a
|
|
closed item or is scrolled offscreen), returns an empty string."""
|
|
return self._getints(self.tk.call(self._w, "bbox", item, column)) or ''
|
|
|
|
|
|
def get_children(self, item=None):
|
|
"""Returns a tuple of children belonging to item.
|
|
|
|
If item is not specified, returns root children."""
|
|
return self.tk.splitlist(
|
|
self.tk.call(self._w, "children", item or '') or ())
|
|
|
|
|
|
def set_children(self, item, *newchildren):
|
|
"""Replaces item's child with newchildren.
|
|
|
|
Children present in item that are not present in newchildren
|
|
are detached from tree. No items in newchildren may be an
|
|
ancestor of item."""
|
|
self.tk.call(self._w, "children", item, newchildren)
|
|
|
|
|
|
def column(self, column, option=None, **kw):
|
|
"""Query or modify the options for the specified column.
|
|
|
|
If kw is not given, returns a dict of the column 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(self.tk, kw, self._w, "column", column)
|
|
|
|
|
|
def delete(self, *items):
|
|
"""Delete all specified items and all their descendants. The root
|
|
item may not be deleted."""
|
|
self.tk.call(self._w, "delete", items)
|
|
|
|
|
|
def detach(self, *items):
|
|
"""Unlinks all of the specified items from the tree.
|
|
|
|
The items and all of their descendants are still present, and may
|
|
be reinserted at another point in the tree, but will not be
|
|
displayed. The root item may not be detached."""
|
|
self.tk.call(self._w, "detach", items)
|
|
|
|
|
|
def exists(self, item):
|
|
"""Returns True if the specified item is present in the tree,
|
|
False otherwise."""
|
|
return self.tk.getboolean(self.tk.call(self._w, "exists", item))
|
|
|
|
|
|
def focus(self, item=None):
|
|
"""If item is specified, sets the focus item to item. Otherwise,
|
|
returns the current focus item, or '' if there is none."""
|
|
return self.tk.call(self._w, "focus", item)
|
|
|
|
|
|
def heading(self, column, option=None, **kw):
|
|
"""Query or modify the heading options for the specified column.
|
|
|
|
If kw is not given, returns a dict of the heading option values. If
|
|
option is specified then the value for that option is returned.
|
|
Otherwise, sets the options to the corresponding values.
|
|
|
|
Valid options/values are:
|
|
text: text
|
|
The text to display in the column heading
|
|
image: image_name
|
|
Specifies an image to display to the right of the column
|
|
heading
|
|
anchor: anchor
|
|
Specifies how the heading text should be aligned. One of
|
|
the standard Tk anchor values
|
|
command: callback
|
|
A callback to be invoked when the heading label is
|
|
pressed.
|
|
|
|
To configure the tree column heading, call this with column = "#0" """
|
|
cmd = kw.get('command')
|
|
if cmd and not isinstance(cmd, str):
|
|
# callback not registered yet, do it now
|
|
kw['command'] = self.master.register(cmd, self._substitute)
|
|
|
|
if option is not None:
|
|
kw[option] = None
|
|
|
|
return _val_or_dict(self.tk, kw, self._w, 'heading', column)
|
|
|
|
|
|
def identify(self, component, x, y):
|
|
"""Returns a description of the specified component under the
|
|
point given by x and y, or the empty string if no such component
|
|
is present at that position."""
|
|
return self.tk.call(self._w, "identify", component, x, y)
|
|
|
|
|
|
def identify_row(self, y):
|
|
"""Returns the item ID of the item at position y."""
|
|
return self.identify("row", 0, y)
|
|
|
|
|
|
def identify_column(self, x):
|
|
"""Returns the data column identifier of the cell at position x.
|
|
|
|
The tree column has ID #0."""
|
|
return self.identify("column", x, 0)
|
|
|
|
|
|
def identify_region(self, x, y):
|
|
"""Returns one of:
|
|
|
|
heading: Tree heading area.
|
|
separator: Space between two columns headings;
|
|
tree: The tree area.
|
|
cell: A data cell.
|
|
|
|
* Availability: Tk 8.6"""
|
|
return self.identify("region", x, y)
|
|
|
|
|
|
def identify_element(self, x, y):
|
|
"""Returns the element at position x, y.
|
|
|
|
* Availability: Tk 8.6"""
|
|
return self.identify("element", x, y)
|
|
|
|
|
|
def index(self, item):
|
|
"""Returns the integer index of item within its parent's list
|
|
of children."""
|
|
return self.tk.getint(self.tk.call(self._w, "index", item))
|
|
|
|
|
|
def insert(self, parent, index, iid=None, **kw):
|
|
"""Creates a new item and return the item identifier of the newly
|
|
created item.
|
|
|
|
parent is the item ID of the parent item, or the empty string
|
|
to create a new top-level item. index is an integer, or the value
|
|
end, specifying where in the list of parent's children to insert
|
|
the new item. If index is less than or equal to zero, the new node
|
|
is inserted at the beginning, if index is greater than or equal to
|
|
the current number of children, it is inserted at the end. If iid
|
|
is specified, it is used as the item identifier, iid must not
|
|
already exist in the tree. Otherwise, a new unique identifier
|
|
is generated."""
|
|
opts = _format_optdict(kw)
|
|
if iid:
|
|
res = self.tk.call(self._w, "insert", parent, index,
|
|
"-id", iid, *opts)
|
|
else:
|
|
res = self.tk.call(self._w, "insert", parent, index, *opts)
|
|
|
|
return res
|
|
|
|
|
|
def item(self, item, option=None, **kw):
|
|
"""Query or modify the options for the specified item.
|
|
|
|
If no options are given, a dict with options/values for the item
|
|
is returned. If option is specified then the value for that option
|
|
is returned. Otherwise, sets the options to the corresponding
|
|
values as given by kw."""
|
|
if option is not None:
|
|
kw[option] = None
|
|
return _val_or_dict(self.tk, kw, self._w, "item", item)
|
|
|
|
|
|
def move(self, item, parent, index):
|
|
"""Moves item to position index in parent's list of children.
|
|
|
|
It is illegal to move an item under one of its descendants. If
|
|
index is less than or equal to zero, item is moved to the
|
|
beginning, if greater than or equal to the number of children,
|
|
it is moved to the end. If item was detached it is reattached."""
|
|
self.tk.call(self._w, "move", item, parent, index)
|
|
|
|
reattach = move # A sensible method name for reattaching detached items
|
|
|
|
|
|
def next(self, item):
|
|
"""Returns the identifier of item's next sibling, or '' if item
|
|
is the last child of its parent."""
|
|
return self.tk.call(self._w, "next", item)
|
|
|
|
|
|
def parent(self, item):
|
|
"""Returns the ID of the parent of item, or '' if item is at the
|
|
top level of the hierarchy."""
|
|
return self.tk.call(self._w, "parent", item)
|
|
|
|
|
|
def prev(self, item):
|
|
"""Returns the identifier of item's previous sibling, or '' if
|
|
item is the first child of its parent."""
|
|
return self.tk.call(self._w, "prev", item)
|
|
|
|
|
|
def see(self, item):
|
|
"""Ensure that item is visible.
|
|
|
|
Sets all of item's ancestors open option to True, and scrolls
|
|
the widget if necessary so that item is within the visible
|
|
portion of the tree."""
|
|
self.tk.call(self._w, "see", item)
|
|
|
|
|
|
def selection(self, selop=None, items=None):
|
|
"""If selop is not specified, returns selected items."""
|
|
return self.tk.call(self._w, "selection", selop, items)
|
|
|
|
|
|
def selection_set(self, items):
|
|
"""items becomes the new selection."""
|
|
self.selection("set", items)
|
|
|
|
|
|
def selection_add(self, items):
|
|
"""Add items to the selection."""
|
|
self.selection("add", items)
|
|
|
|
|
|
def selection_remove(self, items):
|
|
"""Remove items from the selection."""
|
|
self.selection("remove", items)
|
|
|
|
|
|
def selection_toggle(self, items):
|
|
"""Toggle the selection state of each item in items."""
|
|
self.selection("toggle", items)
|
|
|
|
|
|
def set(self, item, column=None, value=None):
|
|
"""Query or set the value of given item.
|
|
|
|
With one argument, return a dictionary of column/value pairs
|
|
for the specified item. With two arguments, return the current
|
|
value of the specified column. With three arguments, set the
|
|
value of given column in given item to the specified value."""
|
|
res = self.tk.call(self._w, "set", item, column, value)
|
|
if column is None and value is None:
|
|
return _splitdict(self.tk, res,
|
|
cut_minus=False, conv=_tclobj_to_py)
|
|
else:
|
|
return res
|
|
|
|
|
|
def tag_bind(self, tagname, sequence=None, callback=None):
|
|
"""Bind a callback for the given event sequence to the tag tagname.
|
|
When an event is delivered to an item, the callbacks for each
|
|
of the item's tags option are called."""
|
|
self._bind((self._w, "tag", "bind", tagname), sequence, callback, add=0)
|
|
|
|
|
|
def tag_configure(self, tagname, option=None, **kw):
|
|
"""Query or modify the options for the specified tagname.
|
|
|
|
If kw is not given, returns a dict of the option settings for tagname.
|
|
If option is specified, returns the value for that option for the
|
|
specified tagname. Otherwise, sets the options to the corresponding
|
|
values for the given tagname."""
|
|
if option is not None:
|
|
kw[option] = None
|
|
return _val_or_dict(self.tk, kw, self._w, "tag", "configure",
|
|
tagname)
|
|
|
|
|
|
def tag_has(self, tagname, item=None):
|
|
"""If item is specified, returns 1 or 0 depending on whether the
|
|
specified item has the given tagname. Otherwise, returns a list of
|
|
all items which have the specified tag.
|
|
|
|
* Availability: Tk 8.6"""
|
|
if item is None:
|
|
return self.tk.splitlist(
|
|
self.tk.call(self._w, "tag", "has", tagname))
|
|
else:
|
|
return self.tk.getboolean(
|
|
self.tk.call(self._w, "tag", "has", tagname, item))
|
|
|
|
|
|
# Extensions
|
|
|
|
class LabeledScale(Frame):
|
|
"""A Ttk Scale widget with a Ttk Label widget indicating its
|
|
current value.
|
|
|
|
The Ttk Scale can be accessed through instance.scale, and Ttk Label
|
|
can be accessed through instance.label"""
|
|
|
|
def __init__(self, master=None, variable=None, from_=0, to=10, **kw):
|
|
"""Construct an horizontal LabeledScale with parent master, a
|
|
variable to be associated with the Ttk Scale widget and its range.
|
|
If variable is not specified, a tkinter.IntVar is created.
|
|
|
|
WIDGET-SPECIFIC OPTIONS
|
|
|
|
compound: 'top' or 'bottom'
|
|
Specifies how to display the label relative to the scale.
|
|
Defaults to 'top'.
|
|
"""
|
|
self._label_top = kw.pop('compound', 'top') == 'top'
|
|
|
|
Frame.__init__(self, master, **kw)
|
|
self._variable = variable or tkinter.IntVar(master)
|
|
self._variable.set(from_)
|
|
self._last_valid = from_
|
|
|
|
self.label = Label(self)
|
|
self.scale = Scale(self, variable=self._variable, from_=from_, to=to)
|
|
self.scale.bind('<<RangeChanged>>', self._adjust)
|
|
|
|
# position scale and label according to the compound option
|
|
scale_side = 'bottom' if self._label_top else 'top'
|
|
label_side = 'top' if scale_side == 'bottom' else 'bottom'
|
|
self.scale.pack(side=scale_side, fill='x')
|
|
tmp = Label(self).pack(side=label_side) # place holder
|
|
self.label.place(anchor='n' if label_side == 'top' else 's')
|
|
|
|
# update the label as scale or variable changes
|
|
self.__tracecb = self._variable.trace_variable('w', self._adjust)
|
|
self.bind('<Configure>', self._adjust)
|
|
self.bind('<Map>', self._adjust)
|
|
|
|
|
|
def destroy(self):
|
|
"""Destroy this widget and possibly its associated variable."""
|
|
try:
|
|
self._variable.trace_vdelete('w', self.__tracecb)
|
|
except AttributeError:
|
|
# widget has been destroyed already
|
|
pass
|
|
else:
|
|
del self._variable
|
|
Frame.destroy(self)
|
|
|
|
|
|
def _adjust(self, *args):
|
|
"""Adjust the label position according to the scale."""
|
|
def adjust_label():
|
|
self.update_idletasks() # "force" scale redraw
|
|
|
|
x, y = self.scale.coords()
|
|
if self._label_top:
|
|
y = self.scale.winfo_y() - self.label.winfo_reqheight()
|
|
else:
|
|
y = self.scale.winfo_reqheight() + self.label.winfo_reqheight()
|
|
|
|
self.label.place_configure(x=x, y=y)
|
|
|
|
from_ = _to_number(self.scale['from'])
|
|
to = _to_number(self.scale['to'])
|
|
if to < from_:
|
|
from_, to = to, from_
|
|
newval = self._variable.get()
|
|
if not from_ <= newval <= to:
|
|
# value outside range, set value back to the last valid one
|
|
self.value = self._last_valid
|
|
return
|
|
|
|
self._last_valid = newval
|
|
self.label['text'] = newval
|
|
self.after_idle(adjust_label)
|
|
|
|
|
|
def _get_value(self):
|
|
"""Return current scale value."""
|
|
return self._variable.get()
|
|
|
|
|
|
def _set_value(self, val):
|
|
"""Set new scale value."""
|
|
self._variable.set(val)
|
|
|
|
|
|
value = property(_get_value, _set_value)
|
|
|
|
|
|
class OptionMenu(Menubutton):
|
|
"""Themed OptionMenu, based after tkinter's OptionMenu, which allows
|
|
the user to select a value from a menu."""
|
|
|
|
def __init__(self, master, variable, default=None, *values, **kwargs):
|
|
"""Construct a themed OptionMenu widget with master as the parent,
|
|
the resource textvariable set to variable, the initially selected
|
|
value specified by the default parameter, the menu values given by
|
|
*values and additional keywords.
|
|
|
|
WIDGET-SPECIFIC OPTIONS
|
|
|
|
style: stylename
|
|
Menubutton style.
|
|
direction: 'above', 'below', 'left', 'right', or 'flush'
|
|
Menubutton direction.
|
|
command: callback
|
|
A callback that will be invoked after selecting an item.
|
|
"""
|
|
kw = {'textvariable': variable, 'style': kwargs.pop('style', None),
|
|
'direction': kwargs.pop('direction', None)}
|
|
Menubutton.__init__(self, master, **kw)
|
|
self['menu'] = tkinter.Menu(self, tearoff=False)
|
|
|
|
self._variable = variable
|
|
self._callback = kwargs.pop('command', None)
|
|
if kwargs:
|
|
raise tkinter.TclError('unknown option -%s' % (
|
|
next(iter(kwargs.keys()))))
|
|
|
|
self.set_menu(default, *values)
|
|
|
|
|
|
def __getitem__(self, item):
|
|
if item == 'menu':
|
|
return self.nametowidget(Menubutton.__getitem__(self, item))
|
|
|
|
return Menubutton.__getitem__(self, item)
|
|
|
|
|
|
def set_menu(self, default=None, *values):
|
|
"""Build a new menu of radiobuttons with *values and optionally
|
|
a default value."""
|
|
menu = self['menu']
|
|
menu.delete(0, 'end')
|
|
for val in values:
|
|
menu.add_radiobutton(label=val,
|
|
command=tkinter._setit(self._variable, val, self._callback))
|
|
|
|
if default:
|
|
self._variable.set(default)
|
|
|
|
|
|
def destroy(self):
|
|
"""Destroy this widget and its associated variable."""
|
|
del self._variable
|
|
Menubutton.destroy(self)
|