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# This module exports classes for the various canvas item types
# NOTE: This module was an experiment and is now obsolete.
# It's best to use the Tkinter.Canvas class directly.
from warnings import warnpy3k
warnpy3k("the Canvas module has been removed in Python 3.0", stacklevel=2)
del warnpy3k
from Tkinter import Canvas, _cnfmerge, _flatten
class CanvasItem:
def __init__(self, canvas, itemType, *args, **kw):
self.canvas = canvas
self.id = canvas._create(itemType, args, kw)
if not hasattr(canvas, 'items'):
canvas.items = {}
canvas.items[self.id] = self
def __str__(self):
return str(self.id)
def __repr__(self):
return '<%s, id=%d>' % (self.__class__.__name__, self.id)
def delete(self):
del self.canvas.items[self.id]
self.canvas.delete(self.id)
def __getitem__(self, key):
v = self.canvas.tk.split(self.canvas.tk.call(
self.canvas._w, 'itemconfigure',
self.id, '-' + key))
return v[4]
cget = __getitem__
def __setitem__(self, key, value):
self.canvas.itemconfig(self.id, {key: value})
def keys(self):
if not hasattr(self, '_keys'):
self._keys = map(lambda x, tk=self.canvas.tk:
tk.splitlist(x)[0][1:],
self.canvas.tk.splitlist(
self.canvas._do(
'itemconfigure',
(self.id,))))
return self._keys
def has_key(self, key):
return key in self.keys()
def __contains__(self, key):
return key in self.keys()
def addtag(self, tag, option='withtag'):
self.canvas.addtag(tag, option, self.id)
def bbox(self):
x1, y1, x2, y2 = self.canvas.bbox(self.id)
return (x1, y1), (x2, y2)
def bind(self, sequence=None, command=None, add=None):
return self.canvas.tag_bind(self.id, sequence, command, add)
def unbind(self, sequence, funcid=None):
self.canvas.tag_unbind(self.id, sequence, funcid)
def config(self, cnf={}, **kw):
return self.canvas.itemconfig(self.id, _cnfmerge((cnf, kw)))
def coords(self, pts = ()):
flat = ()
for x, y in pts: flat = flat + (x, y)
return self.canvas.coords(self.id, *flat)
def dchars(self, first, last=None):
self.canvas.dchars(self.id, first, last)
def dtag(self, ttd):
self.canvas.dtag(self.id, ttd)
def focus(self):
self.canvas.focus(self.id)
def gettags(self):
return self.canvas.gettags(self.id)
def icursor(self, index):
self.canvas.icursor(self.id, index)
def index(self, index):
return self.canvas.index(self.id, index)
def insert(self, beforethis, string):
self.canvas.insert(self.id, beforethis, string)
def lower(self, belowthis=None):
self.canvas.tag_lower(self.id, belowthis)
def move(self, xamount, yamount):
self.canvas.move(self.id, xamount, yamount)
def tkraise(self, abovethis=None):
self.canvas.tag_raise(self.id, abovethis)
raise_ = tkraise # BW compat
def scale(self, xorigin, yorigin, xscale, yscale):
self.canvas.scale(self.id, xorigin, yorigin, xscale, yscale)
def type(self):
return self.canvas.type(self.id)
class Arc(CanvasItem):
def __init__(self, canvas, *args, **kw):
CanvasItem.__init__(self, canvas, 'arc', *args, **kw)
class Bitmap(CanvasItem):
def __init__(self, canvas, *args, **kw):
CanvasItem.__init__(self, canvas, 'bitmap', *args, **kw)
class ImageItem(CanvasItem):
def __init__(self, canvas, *args, **kw):
CanvasItem.__init__(self, canvas, 'image', *args, **kw)
class Line(CanvasItem):
def __init__(self, canvas, *args, **kw):
CanvasItem.__init__(self, canvas, 'line', *args, **kw)
class Oval(CanvasItem):
def __init__(self, canvas, *args, **kw):
CanvasItem.__init__(self, canvas, 'oval', *args, **kw)
class Polygon(CanvasItem):
def __init__(self, canvas, *args, **kw):
CanvasItem.__init__(self, canvas, 'polygon', *args, **kw)
class Rectangle(CanvasItem):
def __init__(self, canvas, *args, **kw):
CanvasItem.__init__(self, canvas, 'rectangle', *args, **kw)
# XXX "Text" is taken by the Text widget...
class CanvasText(CanvasItem):
def __init__(self, canvas, *args, **kw):
CanvasItem.__init__(self, canvas, 'text', *args, **kw)
class Window(CanvasItem):
def __init__(self, canvas, *args, **kw):
CanvasItem.__init__(self, canvas, 'window', *args, **kw)
class Group:
def __init__(self, canvas, tag=None):
if not tag:
tag = 'Group%d' % id(self)
self.tag = self.id = tag
self.canvas = canvas
self.canvas.dtag(self.tag)
def str(self):
return self.tag
__str__ = str
def _do(self, cmd, *args):
return self.canvas._do(cmd, (self.tag,) + _flatten(args))
def addtag_above(self, tagOrId):
self._do('addtag', 'above', tagOrId)
def addtag_all(self):
self._do('addtag', 'all')
def addtag_below(self, tagOrId):
self._do('addtag', 'below', tagOrId)
def addtag_closest(self, x, y, halo=None, start=None):
self._do('addtag', 'closest', x, y, halo, start)
def addtag_enclosed(self, x1, y1, x2, y2):
self._do('addtag', 'enclosed', x1, y1, x2, y2)
def addtag_overlapping(self, x1, y1, x2, y2):
self._do('addtag', 'overlapping', x1, y1, x2, y2)
def addtag_withtag(self, tagOrId):
self._do('addtag', 'withtag', tagOrId)
def bbox(self):
return self.canvas._getints(self._do('bbox'))
def bind(self, sequence=None, command=None, add=None):
return self.canvas.tag_bind(self.id, sequence, command, add)
def unbind(self, sequence, funcid=None):
self.canvas.tag_unbind(self.id, sequence, funcid)
def coords(self, *pts):
return self._do('coords', pts)
def dchars(self, first, last=None):
self._do('dchars', first, last)
def delete(self):
self._do('delete')
def dtag(self, tagToDelete=None):
self._do('dtag', tagToDelete)
def focus(self):
self._do('focus')
def gettags(self):
return self.canvas.tk.splitlist(self._do('gettags', self.tag))
def icursor(self, index):
return self._do('icursor', index)
def index(self, index):
return self.canvas.tk.getint(self._do('index', index))
def insert(self, beforeThis, string):
self._do('insert', beforeThis, string)
def config(self, cnf={}, **kw):
return self.canvas.itemconfigure(self.tag, _cnfmerge((cnf,kw)))
def lower(self, belowThis=None):
self._do('lower', belowThis)
def move(self, xAmount, yAmount):
self._do('move', xAmount, yAmount)
def tkraise(self, aboveThis=None):
self._do('raise', aboveThis)
lift = tkraise
def scale(self, xOrigin, yOrigin, xScale, yScale):
self._do('scale', xOrigin, yOrigin, xScale, yScale)
def select_adjust(self, index):
self.canvas._do('select', ('adjust', self.tag, index))
def select_from(self, index):
self.canvas._do('select', ('from', self.tag, index))
def select_to(self, index):
self.canvas._do('select', ('to', self.tag, index))
def type(self):
return self._do('type')