Editing: Canvas.py
# 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')
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