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# This module exports classes for the various canvas item types
# vi:set tabsize=4:
from Tkinter import Canvas, _isfunctype
class CanvasItem:
def __init__(self, canvas, itemType, args = (), cnf={}):
self.canvas = canvas
self.id = canvas._create(itemType, args + (cnf,))
def __str__(self):
return str(self.id)
def __repr__(self):
return '<%s, id=%d>' % (self.__class__.__name__, self.id)
def __del__(self):
self.canvas.delete(self.id)
delete = __del__
def __getitem__(self, key):
v = self.canvas.tk.split(self.canvas.tk.call(self.canvas.pathName,
'itemconfigure',
str(self.id),
'-' + key))
return v[4]
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._splitlist(
self.canvas.cmd('itemconfigure', self.id)))
return self._keys
def has_key(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):
return self.canvas.bind(self.id, sequence, command)
def coords(self, pts = ()):
flat = ()
for x, y in pts: flat = flat + (x, y)
return apply(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):
self.canvas.icursor(self.id)
def index(self):
return self.canvas.index(self.id)
def insert(self, beforethis, string):
self.canvas.insert(self.id, beforethis, string)
def lower(self, belowthis=None):
self.canvas.lower(self.id, belowthis)
def move(self, xamount, yamount):
self.canvas.move(self.id, xamount, yamount)
def raise_(self, abovethis=None):
self.canvas.raise_(self.id, abovethis)
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, (x1, y1), (x2, y2), cnf={}):
CanvasItem.__init__(self, canvas, 'arc',
(str(x1), str(y1), str(x2), str(y2)), cnf)
class Bitmap(CanvasItem):
def __init__(self, canvas, (x1, y1), cnf={}):
CanvasItem.__init__(self, canvas, 'bitmap', (str(x1), str(y1)), cnf)
class Line(CanvasItem):
def __init__(self, canvas, pts, cnf={}):
pts = reduce(lambda a, b: a+b,
map(lambda pt: (str(pt[0]), str(pt[1])), pts))
CanvasItem.__init__(self, canvas, 'line', pts, cnf)
class Oval(CanvasItem):
def __init__(self, canvas, (x1, y1), (x2, y2), cnf={}):
CanvasItem.__init__(self, canvas, 'oval',
(str(x1), str(y1), str(x2), str(y2)), cnf)
class Polygon(CanvasItem):
def __init__(self, canvas, pts, cnf={}):
pts = reduce(lambda a, b: a+b,
map(lambda pt: (str(pt[0]), str(pt[1])), pts))
CanvasItem.__init__(self, canvas, 'polygon', pts, cnf)
class Curve(Polygon):
def __init__(self, canvas, pts, cnf={}):
cnf['smooth'] = 'yes'
Polygon.__init__(self, canvas, pts, cnf)
class Rectangle(CanvasItem):
def __init__(self, canvas, (x1, y1), (x2, y2), cnf={}):
CanvasItem.__init__(self, canvas, 'rectangle',
(str(x1), str(y1), str(x2), str(y2)), cnf)
# XXX Can't use name "Text" since that is already taken by the Text widget...
class String(CanvasItem):
def __init__(self, canvas, (x1, y1), cnf={}):
CanvasItem.__init__(self, canvas, 'text', (str(x1), str(y1)), cnf)
class Window(CanvasItem):
def __init__(self, canvas, where, cnf={}):
CanvasItem.__init__(self, canvas, 'window',
(str(where[0]), str(where[1])), cnf)
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