Python CanvasFrame.destroy_widget方法代码示例

# 需要导入模块: from nltk.draw.util import CanvasFrame [as 别名]
# 或者: from nltk.draw.util.CanvasFrame import destroy_widget [as 别名]
def tree_to_ps(s, outfile):
    global _canvas_frame
    if _canvas_frame is None:
        _canvas_frame = CanvasFrame()

    # May throw ValueError:
    widget = tree_to_widget(s, _canvas_frame.canvas())

    _canvas_frame.canvas()['scrollregion'] = (0, 0, 1, 1)
    _canvas_frame.add_widget(widget)
    _canvas_frame.print_to_file(outfile)
    bbox = widget.bbox()
    _canvas_frame.destroy_widget(widget)

    ## Testing..
    #for (key, val) in metrics.items():
    #    print key, '\n  ', val
    
    return bbox[2:]

# 需要导入模块: from nltk.draw.util import CanvasFrame [as 别名]
# 或者: from nltk.draw.util.CanvasFrame import destroy_widget [as 别名]
class TreeView:
    def __init__(self, trees, root=None):
        if len(trees) == 0:
            print "No trees to display."
            return

        newroot = False
        if root is None:
            root = Tkinter.Tk()
            window = root
            newroot = True
        else:
            window = Tkinter.Toplevel(root)
        
        window.title("Parse Tree")
        window.geometry("600x400")
        self.cf = CanvasFrame(window)
        self.cf.pack(side='top', expand=1, fill='both')
        buttons = Tkinter.Frame(window)
        buttons.pack(side='bottom', fill='x')

        self.spin = Tkinter.Spinbox(buttons, from_=1, to=len(trees),
            command=self.showtree, width=3)
        if len(trees) > 1: self.spin.pack(side='left')
        self.label = Tkinter.Label(buttons, text="of %d" % len(trees))
        if len(trees) > 1: self.label.pack(side='left')
        self.done = Tkinter.Button(buttons, text="Done", command=window.destroy)
        self.done.pack(side='right')
        self.printps = Tkinter.Button(buttons, text="Print to Postscript", command=self.cf.print_to_file)
        self.printps.pack(side='right')
        
        self.trees = trees
        self.treeWidget = None
        self.showtree()
        if newroot: root.mainloop()
    
    def showtree(self):
        try: n = int(self.spin.get())
        except ValueError: n=1
        if self.treeWidget is not None: self.cf.destroy_widget(self.treeWidget)
        self.treeWidget = TreeWidget(self.cf.canvas(),
        self.trees[n-1], draggable=1, shapeable=1)
        self.cf.add_widget(self.treeWidget, 0, 0)

# 需要导入模块: from nltk.draw.util import CanvasFrame [as 别名]
# 或者: from nltk.draw.util.CanvasFrame import destroy_widget [as 别名]
    def to_ps(self, filename):
        """Export as a PostScript image.

        This function is used by `_repr_png_`.
        """
        _canvas_frame = CanvasFrame()
        # WIP customization of visual appearance
        # NB: conda-provided python and tk cannot access most fonts on the
        # system, thus it currently falls back on the default font
        widget = tree_to_treesegment(_canvas_frame.canvas(), self,
                                     tree_yspace=35,
                                     node_font=('Verdana', -18, 'bold'),
                                     leaf_font=('Verdana', -18))
        _canvas_frame.add_widget(widget)
        x, y, w, h = widget.bbox()
        # print_to_file uses scrollregion to set the width and height of the
        # pdf
        _canvas_frame.canvas()['scrollregion'] = (0, 0, w, h)
        # print to file
        _canvas_frame.print_to_file(filename)
        _canvas_frame.destroy_widget(widget)

# 需要导入模块: from nltk.draw.util import CanvasFrame [as 别名]
# 或者: from nltk.draw.util.CanvasFrame import destroy_widget [as 别名]

#.........这里部分代码省略.........
                                    variable=self._animation_frames,
                                    value=2, accelerator='+')
        menubar.add_cascade(label="Animate", underline=1, menu=animatemenu)


        helpmenu = Menu(menubar, tearoff=0)
        helpmenu.add_command(label='About', underline=0,
                             command=self.about)
        helpmenu.add_command(label='Instructions', underline=0,
                             command=self.help, accelerator='F1')
        menubar.add_cascade(label='Help', underline=0, menu=helpmenu)

        parent.config(menu=menubar)

    #########################################
    ##  Helper
    #########################################

    def _get(self, widget, treeloc):
        for i in treeloc: widget = widget.subtrees()[i]
        if isinstance(widget, TreeSegmentWidget):
            widget = widget.node()
        return widget

    #########################################
    ##  Main draw procedure
    #########################################

    def _redraw(self):
        canvas = self._canvas

        # Delete the old tree, widgets, etc.
        if self._tree is not None:
            self._cframe.destroy_widget(self._tree)
        for twidget in self._textwidgets:
            self._cframe.destroy_widget(twidget)
        if self._textline is not None:
            self._canvas.delete(self._textline)

        # Draw the tree.
        helv = ('helvetica', -self._size.get())
        bold = ('helvetica', -self._size.get(), 'bold')
        attribs = {'tree_color': '#000000', 'tree_width': 2,
                   'node_font': bold, 'leaf_font': helv,}
        tree = self._parser.tree()
        self._tree = tree_to_treesegment(canvas, tree, **attribs)
        self._cframe.add_widget(self._tree, 30, 5)

        # Draw the text.
        helv = ('helvetica', -self._size.get())
        bottom = y = self._cframe.scrollregion()[3]
        self._textwidgets = [TextWidget(canvas, word, font=self._font)
                             for word in self._sent]
        for twidget in self._textwidgets:
            self._cframe.add_widget(twidget, 0, 0)
            twidget.move(0, bottom-twidget.bbox()[3]-5)
            y = min(y, twidget.bbox()[1])

        # Draw a line over the text, to separate it from the tree.
        self._textline = canvas.create_line(-5000, y-5, 5000, y-5, dash='.')

        # Highlight appropriate nodes.
        self._highlight_nodes()
        self._highlight_prodlist()

        # Make sure the text lines up.

# 需要导入模块: from nltk.draw.util import CanvasFrame [as 别名]
# 或者: from nltk.draw.util.CanvasFrame import destroy_widget [as 别名]

#.........这里部分代码省略.........
        self._lastoper2.pack(side='left', fill='x', expand=1)

    def _init_canvas(self, parent):
        self._cframe = CanvasFrame(parent, background='white',
                                   width=525, closeenough=10,
                                   border=2, relief='sunken')
        self._cframe.pack(expand=1, fill='both', side='top', pady=2)
        canvas = self._canvas = self._cframe.canvas()

        self._stackwidgets = []
        self._rtextwidgets = []
        self._titlebar = canvas.create_rectangle(0,0,0,0, fill='#c0f0f0',
                                                 outline='black')
        self._exprline = canvas.create_line(0,0,0,0, dash='.')
        self._stacktop = canvas.create_line(0,0,0,0, fill='#408080')
        size = self._size.get()+4
        self._stacklabel = TextWidget(canvas, 'Stack', color='#004040',
                                      font=self._boldfont)
        self._rtextlabel = TextWidget(canvas, 'Remaining Text',
                                      color='#004040', font=self._boldfont)
        self._cframe.add_widget(self._stacklabel)
        self._cframe.add_widget(self._rtextlabel)

    #########################################
    ##  Main draw procedure
    #########################################

    def _redraw(self):
        scrollregion = self._canvas['scrollregion'].split()
        (cx1, cy1, cx2, cy2) = [int(c) for c in scrollregion]

        # Delete the old stack & rtext widgets.
        for stackwidget in self._stackwidgets:
            self._cframe.destroy_widget(stackwidget)
        self._stackwidgets = []
        for rtextwidget in self._rtextwidgets:
            self._cframe.destroy_widget(rtextwidget)
        self._rtextwidgets = []

        # Position the titlebar & exprline
        (x1, y1, x2, y2) = self._stacklabel.bbox()
        y = y2-y1+10
        self._canvas.coords(self._titlebar, -5000, 0, 5000, y-4)
        self._canvas.coords(self._exprline, 0, y*2-10, 5000, y*2-10)

        # Position the titlebar labels..
        (x1, y1, x2, y2) = self._stacklabel.bbox()
        self._stacklabel.move(5-x1, 3-y1)
        (x1, y1, x2, y2) = self._rtextlabel.bbox()
        self._rtextlabel.move(cx2-x2-5, 3-y1)

        # Draw the stack.
        stackx = 5
        for tok in self._parser.stack():
            if isinstance(tok, Tree):
                attribs = {'tree_color': '#4080a0', 'tree_width': 2,
                           'node_font': self._boldfont,
                           'node_color': '#006060',
                           'leaf_color': '#006060', 'leaf_font':self._font}
                widget = tree_to_treesegment(self._canvas, tok,
                                             **attribs)
                widget.label()['color'] = '#000000'
            else:
                widget = TextWidget(self._canvas, tok,
                                    color='#000000', font=self._font)
            widget.bind_click(self._popup_reduce)