# 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 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')