summaryrefslogtreecommitdiffstats
path: root/Lib/tkinter/Canvas.py
blob: 1e4a5c86940d50174fcecf2a8b775423cc81ecea (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
# This module exports classes for the various canvas item types

from Tkinter import Canvas

StringType = type('')
DictionaryType = type({})

def _flatten(tuple):
	res = ()
	for item in tuple:
		if type(item) in (TupleType, ListType):
			res = res + _flatten(item)
		elif item is not None:
			res = res + (item,)
	return res

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]
	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 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 config(self, cnf=None):
		return self.canvas.itemconfig(self.id, cnf)
	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 tkraise(self, abovethis=None):
		self.canvas.tkraise(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):
		CanvasItem.__init__(self, canvas, 'arc', args)

class Bitmap(CanvasItem):
	def __init__(self, canvas, *args):
		CanvasItem.__init__(self, canvas, 'bitmap', args)

class ImageItem(CanvasItem):
	def __init__(self, canvas, *args):
		CanvasItem.__init__(self, canvas, 'image', args)

class Line(CanvasItem):
	def __init__(self, canvas, *args):
		CanvasItem.__init__(self, canvas, 'line', args)

class Oval(CanvasItem):
	def __init__(self, canvas, *args):
		CanvasItem.__init__(self, canvas, 'oval', args)

class Polygon(CanvasItem):
	def __init__(self, canvas, *args):
		CanvasItem.__init__(self, canvas, 'polygon', args)

class Rectangle(CanvasItem):
	def __init__(self, canvas, *args):
		CanvasItem.__init__(self, canvas, 'rectangle', args)

# XXX "Text" is taken by the Text widget...
class CanvasText(CanvasItem):
	def __init__(self, canvas, *args):
		CanvasItem.__init__(self, canvas, 'text', args)

class Window(CanvasItem):
	def __init__(self, canvas, *args):
		CanvasItem.__init__(self, canvas, 'window', args)

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
	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._getints(self._do('bbox'))
	def bind(self, sequence=None, command=None): # XXX args?
		return self._do('bind', sequence, command)
	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')
	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=None):
		return self.canvas.itemconfigure(self.tag, cnf)
	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')