Python Tkinter.Label() Examples

def preferences(self, event=None):
        preferenceTop = tkinter.Toplevel()
        preferenceTop.focus_set()
        
        notebook = ttk.Notebook(preferenceTop)
        
        frame1 = ttk.Frame(notebook)
        notebook.add(frame1, text='general')
        frame2 = ttk.Frame(notebook)
        notebook.add(frame2, text='shortcuts')

        c = ttk.Checkbutton(frame1, text="Match whole word when broadcasting annotation", variable=self._whole_word)
        c.pack()
        
        shortcuts_vars = []
        shortcuts_gui = []
        cur_row = 0
        j = -1
        frame_list = []
        frame_list.append(ttk.LabelFrame(frame2, text="common shortcuts"))
        frame_list[-1].pack(fill="both", expand="yes")
        for i, shortcut in enumerate(self.shortcuts):
            j += 1
            key, cmd, bindings = shortcut
            name, command = cmd
            shortcuts_vars.append(tkinter.StringVar(frame_list[-1], value=key))
            tkinter.Label(frame_list[-1], text=name).grid(row=cur_row, column=0, sticky=tkinter.W)
            entry = tkinter.Entry(frame_list[-1], textvariable=shortcuts_vars[j])
            entry.grid(row=cur_row, column=1)
            cur_row += 1
        notebook.pack()
    
    #
    # ? menu methods
    # 

def __init__(self, root, resource_dir):
        ttk.Frame.__init__(self, root)
        
        self.master_selector = None
        self.resource_dir = resource_dir
        self.items = os.listdir(os.path.join(self.resource_dir, "master"))
        
        self.cur_lang = tkinter.StringVar()
        self.select_lang_label = ttk.Label(root, text=u"select language:")
        self.langs = ttk.Combobox(root, textvariable=self.cur_lang)
        
        self.langs["values"] = self.items

        self.langs.current(0)
        for i, item in enumerate(self.items):
            if item == "fr":
                self.langs.current(i)
        
        self.langs.bind("<<ComboboxSelected>>", self.select_lang) 

def __init__(self, main_window, msg='Please enter a node:'):
        tk.Toplevel.__init__(self)
        self.main_window = main_window
        self.title('Node Entry')
        self.geometry('170x160')
        self.rowconfigure(3, weight=1)

        tk.Label(self, text=msg).grid(row=0, column=0, columnspan=2,
                                      sticky='NESW',padx=5,pady=5)
        self.posibilities = [d['dataG_id'] for n,d in
                    main_window.canvas.dispG.nodes_iter(data=True)]
        self.entry = AutocompleteEntry(self.posibilities, self)
        self.entry.bind('<Return>', lambda e: self.destroy(), add='+')
        self.entry.grid(row=1, column=0, columnspan=2, sticky='NESW',padx=5,pady=5)

        tk.Button(self, text='Ok', command=self.destroy).grid(
            row=3, column=0, sticky='ESW',padx=5,pady=5)
        tk.Button(self, text='Cancel', command=self.cancel).grid(
            row=3, column=1, sticky='ESW',padx=5,pady=5)

        # Make modal
        self.winfo_toplevel().wait_window(self) 

def _make_slider(self, parent, rowidx, label, inival, maxval, res=0.5):
        # Create shared variable and set initial value.
        tkvar = tk.DoubleVar()
        tkvar.set(inival)
        # Set a callback for whenever tkvar is changed.
        # (The 'command' callback on the SpinBox only applies to the buttons.)
        tkvar.trace('w', self._update_callback)
        # Create the Label, SpinBox, and Scale objects.
        label = tk.Label(parent, text=label)
        spbox = tk.Spinbox(parent,
            textvariable=tkvar,
            from_=0, to=maxval, increment=res)
        slide = tk.Scale(parent,
            orient=tk.HORIZONTAL,
            showvalue=0,
            variable=tkvar,
            from_=0, to=maxval, resolution=res)
        label.grid(row=rowidx, column=0)
        spbox.grid(row=rowidx, column=1)
        slide.grid(row=rowidx, column=2)
        return tkvar

    # Find the largest output size that fits within the given bounds and
    # matches the aspect ratio of the original source image. 

def test_grid_slaves(self):
        self.assertEqual(self.root.grid_slaves(), [])
        a = tkinter.Label(self.root)
        a.grid_configure(row=0, column=1)
        b = tkinter.Label(self.root)
        b.grid_configure(row=1, column=0)
        c = tkinter.Label(self.root)
        c.grid_configure(row=1, column=1)
        d = tkinter.Label(self.root)
        d.grid_configure(row=1, column=1)
        self.assertEqual(self.root.grid_slaves(), [d, c, b, a])
        self.assertEqual(self.root.grid_slaves(row=0), [a])
        self.assertEqual(self.root.grid_slaves(row=1), [d, c, b])
        self.assertEqual(self.root.grid_slaves(column=0), [b])
        self.assertEqual(self.root.grid_slaves(column=1), [d, c, a])
        self.assertEqual(self.root.grid_slaves(row=1, column=1), [d, c]) 

def __init__(self, master, image, name, enhancer, lo, hi):
        tkinter.Frame.__init__(self, master)

        # set up the image
        self.tkim = ImageTk.PhotoImage(image.mode, image.size)
        self.enhancer = enhancer(image)
        self.update("1.0")  # normalize

        # image window
        tkinter.Label(self, image=self.tkim).pack()

        # scale
        s = tkinter.Scale(self, label=name, orient=tkinter.HORIZONTAL,
                  from_=lo, to=hi, resolution=0.01,
                  command=self.update)
        s.set(self.value)
        s.pack() 

def ShowMol(mol, size=(300, 300), kekulize=True, wedgeBonds=True, title='RDKit Molecule', **kwargs):
    """ Generates a picture of a molecule and displays it in a Tkinter window
    """
    global tkRoot, tkLabel, tkPI
    try:
        import Tkinter
    except ImportError:
        import tkinter as Tkinter
    try:
        import ImageTk
    except ImportError:
        from PIL import ImageTk

    img = MolToImage(mol, size, kekulize, wedgeBonds, **kwargs)

    if not tkRoot:
        tkRoot = Tkinter.Tk()
        tkRoot.title(title)
        tkPI = ImageTk.PhotoImage(img)
        tkLabel = Tkinter.Label(tkRoot, image=tkPI)
        tkLabel.place(x=0, y=0, width=img.size[0], height=img.size[1])
    else:
        tkPI.paste(img)
    tkRoot.geometry('%dx%d' % (img.size)) 

def updateImageCount(happyCount, sadCount):
    global HCount, SCount, imageCountString, countString   # Updating only when called by smileCallback/noSmileCallback
    if happyCount is True and HCount < 400:
        HCount += 1
    if sadCount is True and SCount < 400:
        SCount += 1
    if HCount == 400 or SCount == 400:
        HCount = 0
        SCount = 0
    # --- Updating Labels
    # -- Main Count
    imageCountPercentage = str(float((trainer.index + 1) * 0.25)) \
        if trainer.index+1 < len(faces.images) else "Classification DONE! 100"
    imageCountString = "Image Index: " + str(trainer.index+1) + "/400   " + "[" + imageCountPercentage + " %]"
    labelVar.set(imageCountString)           # Updating the Label (ImageCount)
    # -- Individual Counts
    countString = "(Happy: " + str(HCount) + "   " + "Sad: " + str(SCount) + ")\n"
    countVar.set(countString) 

def show_mnemonic_gui(mnemonic_sentence):
    """may be called *after* main() to display the successful result iff the GUI is in use

    :param mnemonic_sentence: the mnemonic sentence that was found
    :type mnemonic_sentence: unicode
    :rtype: None
    """
    assert tk_root
    global pause_at_exit
    padding = 6
    tk.Label(text="WARNING: seed information is sensitive, carefully protect it and do not share", fg="red") \
        .pack(padx=padding, pady=padding)
    tk.Label(text="Seed found:").pack(side=tk.LEFT, padx=padding, pady=padding)
    entry = tk.Entry(width=80, readonlybackground="white")
    entry.insert(0, mnemonic_sentence)
    entry.config(state="readonly")
    entry.select_range(0, tk.END)
    entry.pack(side=tk.LEFT, fill=tk.X, expand=True, padx=padding, pady=padding)
    tk_root.deiconify()
    tk_root.lift()
    entry.focus_set()
    tk_root.mainloop()  # blocks until the user closes the window
    pause_at_exit = False 

def init_gui(str_app_id):
    gui = tk.Tk()
    gui.title('App ' + str_app_id)
    gui.resizable(0,0)
    try:
        url = "http://cdn.akamai.steamstatic.com/steam/apps/" + str_app_id + "/header_292x136.jpg"
        image_bytes = urlopen(url).read()
        data_stream = io.BytesIO(image_bytes)
        pil_image = Image.open(data_stream)
        tk_image = ImageTk.PhotoImage(pil_image)
        label = tk.Label(gui, image=tk_image)
        label.image = tk_image
    except:
        label = tk.Label(gui, text="Couldn't load image")
        
    label.pack()
    return gui 

def __init__(self, master, im):
        if isinstance(im, list):
            # list of images
            self.im = im[1:]
            im = self.im[0]
        else:
            # sequence
            self.im = im

        if im.mode == "1":
            self.image = ImageTk.BitmapImage(im, foreground="white")
        else:
            self.image = ImageTk.PhotoImage(im)

        tkinter.Label.__init__(self, master, image=self.image, bg="black", bd=0)

        self.update()

        duration = im.info.get("duration", 100)
        self.after(duration, self.next) 

def _show(image, title):
    """Helper for the Image.show method."""

    class UI(tkinter.Label):
        def __init__(self, master, im):
            if im.mode == "1":
                self.image = BitmapImage(im, foreground="white", master=master)
            else:
                self.image = PhotoImage(im, master=master)
            tkinter.Label.__init__(self, master, image=self.image,
                                   bg="black", bd=0)

    if not tkinter._default_root:
        raise IOError("tkinter not initialized")
    top = tkinter.Toplevel()
    if title:
        top.title(title)
    UI(top, image).pack() 

def work(IP):
		conn = httplib.HTTPConnection("www.iknowwhatyoudownload.com/en/peer/?ip="+IP)
		conn.request("GET","/")
		response = conn.getresponse()
		data =response.read()
		soup = BS(data,"html.parser")
		table = soup.find('tbody')
		rows = table.findAll('tr')
		for tr in rows:
			cols = tr.findAll('td')
			Begin,End,Category,title,size=[c.text for c in cols]
			RESULT+="\n"+Begin+" "+Category+" "+title+" "+size
		toplevel = Toplevel()
		label= Label(toplevel,text=RESULT,height=0,width=100)
		label.pack()
		print RESULT 

def __init__(self, parent):
        tk.LabelFrame.__init__(self, parent)
        self.title = tk.Label(self, text='SV Length')

        self.len_GT_On = tk.IntVar(value=0)
        self.len_GT_On_CB = tk.Checkbutton(self, text=">", justify=tk.LEFT, variable=self.len_GT_On)
        self.len_GT_val = tk.Spinbox(self, values=(1,5,10,50,100,500), width=3)
        self.len_GT_Units = tk.Spinbox(self, values=("bp", "kbp", "Mbp"), width=3)

        self.len_LT_On = tk.IntVar(value=0)
        self.len_LT_On_CB = tk.Checkbutton(self, text="<", justify=tk.LEFT, variable=self.len_LT_On)
        self.len_LT_val = tk.Spinbox(self, values=(1,5,10,50,100,500), width=3)
        self.len_LT_Units = tk.Spinbox(self, values=("bp", "kbp", "Mbp"), width=3)

        self.title.grid(row=0, column=0, sticky=tk.EW, columnspan=4)
        self.len_GT_On_CB.grid(row=1, column=0, sticky=tk.EW)
        self.len_GT_val.grid(row=2, column=0, sticky=tk.EW)
        self.len_GT_Units.grid(row=2, column=1, sticky=tk.EW)
        self.len_LT_On_CB.grid(row=1, column=2, sticky=tk.EW)
        self.len_LT_val.grid(row=2, column=2, sticky=tk.EW)
        self.len_LT_Units.grid(row=2, column=3, sticky=tk.EW) 

def __init__(self, parent, env, canvas):
        super(EnvToolbar, self).__init__(parent, relief='raised', bd=2)

        # Initialize instance variables

        self.env = env
        self.canvas = canvas
        self.running = False
        self.speed = 1.0

        # Create buttons and other controls

        for txt, cmd in [('Step >', self.env.step),
                         ('Run >>', self.run),
                         ('Stop [ ]', self.stop),
                         ('List things', self.list_things),
                         ('List agents', self.list_agents)]:
            tk.Button(self, text=txt, command=cmd).pack(side='left')

        tk.Label(self, text='Speed').pack(side='left')
        scale = tk.Scale(self, orient='h',
                         from_=(1.0), to=10.0, resolution=1.0,
                         command=self.set_speed)
        scale.set(self.speed)
        scale.pack(side='left') 

def __init__(self, root, main_window, button_opt):
        ttk.Frame.__init__(self, root)
        
        self.root = root
        self.main_window = main_window
        self.current_files = None
        self.button_opt = button_opt
        
        # define options for opening or saving a file
        self.file_opt = options = {}
        options['defaultextension'] = '.txt'
        options['filetypes'] = [('all files', '.*'), ('text files', '.txt')]
        options['initialdir'] = os.path.expanduser("~")
        options['parent'] = root
        options['title'] = 'Select files to annotate.'
        
        self.file_selector_button = ttk.Button(self.root, text=u"select file(s)", command=self.filenames)
        self.label = ttk.Label(self.root, text=u"selected file(s):")
        self.fa_search = tkinter.PhotoImage(file=os.path.join(self.main_window.resource_dir, "images", "fa_search_24_24.gif"))
        self.file_selector_button.config(image=self.fa_search, compound=tkinter.LEFT)
        
        self.scrollbar = ttk.Scrollbar(self.root)
        self.selected_files = tkinter.Listbox(self.root, yscrollcommand=self.scrollbar.set)
        self.scrollbar.config(command=self.selected_files.yview) 

def _show(image, title):
    """Helper for the Image.show method."""

    class UI(tkinter.Label):
        def __init__(self, master, im):
            if im.mode == "1":
                self.image = BitmapImage(im, foreground="white", master=master)
            else:
                self.image = PhotoImage(im, master=master)
            tkinter.Label.__init__(self, master, image=self.image,
                                   bg="black", bd=0)

    if not tkinter._default_root:
        raise IOError("tkinter not initialized")
    top = tkinter.Toplevel()
    if title:
        top.title(title)
    UI(top, image).pack() 

def draw(self):
        self.title_canvas = tk.Canvas(self, bg=self.bgcolor, width=width, height=90, bd=0, highlightthickness=0, relief='ridge')
        self.title_pic = self._resize_ads_qrcode(RES_APP_TITLE, size=(260, 90))
        self.title_canvas.create_image(0, 0, anchor='nw', image=self.title_pic)
        self.title_canvas.pack(padx=35, pady=15)

        self.qrcode = tk.Canvas(self, bg=self.bgcolor, width=200, height=200)
        #self.qrcode_pic = self._resize_ads_qrcode('qrcode.png', size=(200, 200))
        #self.qrcode.create_image(0, 0, anchor='nw', image=self.qrcode_pic)
        self.qrcode.pack(pady=30)


        # 提示
        self.lable_tip = tk.Label(self,
                     text='请稍等',  # 标签的文字
                     bg=self.bgcolor,  # 背景颜色
                     font=('楷体',12),  # 字体和字体大小
                     width=15, height=2  # 标签长宽
                     )
        self.lable_tip.pack(pady=2,fill=tk.BOTH)  # 固定窗口位置 

def showtip(self, text):
        "Display text in tooltip window"
        self.text = text
        if self.tipwindow or not self.text:
            return
        x, y, _, _ = self.widget.bbox("insert")
        x = x + self.widget.winfo_rootx() + 27
        y = y + self.widget.winfo_rooty()
        self.tipwindow = tw = Tk.Toplevel(self.widget)
        tw.wm_overrideredirect(1)
        tw.wm_geometry("+%d+%d" % (x, y))
        try:
            # For Mac OS
            tw.tk.call("::tk::unsupported::MacWindowStyle",
                       "style", tw._w,
                       "help", "noActivates")
        except Tk.TclError:
            pass
        label = Tk.Label(tw, text=self.text, justify=Tk.LEFT,
                      background="#ffffe0", relief=Tk.SOLID, borderwidth=1,
                      )
        label.pack(ipadx=1) 

def _test():
    root = Tk()
    text = "This is Tcl/Tk version %s" % TclVersion
    if TclVersion >= 8.1:
        try:
            text = text + unicode("\nThis should be a cedilla: \347",
                                  "iso-8859-1")
        except NameError:
            pass # no unicode support
    label = Label(root, text=text)
    label.pack()
    test = Button(root, text="Click me!",
              command=lambda root=root: root.test.configure(
                  text="[%s]" % root.test['text']))
    test.pack()
    root.test = test
    quit = Button(root, text="QUIT", command=root.destroy)
    quit.pack()
    # The following three commands are needed so the window pops
    # up on top on Windows...
    root.iconify()
    root.update()
    root.deiconify()
    root.mainloop() 

def _init_toolbar(self):
        xmin, xmax = self.canvas.figure.bbox.intervalx
        height, width = 50, xmax-xmin
        Tk.Frame.__init__(self, master=self.window,
                          width=int(width), height=int(height),
                          borderwidth=2)

        self.update()  # Make axes menu

        for text, tooltip_text, image_file, callback in self.toolitems:
            if text is None:
                # spacer, unhandled in Tk
                pass
            else:
                button = self._Button(text=text, file=image_file,
                                   command=getattr(self, callback))
                if tooltip_text is not None:
                    ToolTip.createToolTip(button, tooltip_text)

        self.message = Tk.StringVar(master=self)
        self._message_label = Tk.Label(master=self, textvariable=self.message)
        self._message_label.pack(side=Tk.RIGHT)
        self.pack(side=Tk.BOTTOM, fill=Tk.X) 

def _init_toolbar(self):
        xmin, xmax = self.canvas.figure.bbox.intervalx
        height, width = 50, xmax-xmin
        Tk.Frame.__init__(self, master=self.window,
                          width=int(width), height=int(height),
                          borderwidth=2)

        self.update()  # Make axes menu

        for text, tooltip_text, image_file, callback in self.toolitems:
            if text is None:
                # spacer, unhandled in Tk
                pass
            else:
                button = self._Button(text=text, file=image_file,
                                   command=getattr(self, callback))
                if tooltip_text is not None:
                    ToolTip.createToolTip(button, tooltip_text)

        self.message = Tk.StringVar(master=self)
        self._message_label = Tk.Label(master=self, textvariable=self.message)
        self._message_label.pack(side=Tk.RIGHT)
        self.pack(side=Tk.BOTTOM, fill=Tk.X) 

def showtip(self, text):
        "Display text in tooltip window"
        self.text = text
        if self.tipwindow or not self.text:
            return
        x, y, _, _ = self.widget.bbox("insert")
        x = x + self.widget.winfo_rootx() + 27
        y = y + self.widget.winfo_rooty()
        self.tipwindow = tw = Tk.Toplevel(self.widget)
        tw.wm_overrideredirect(1)
        tw.wm_geometry("+%d+%d" % (x, y))
        try:
            # For Mac OS
            tw.tk.call("::tk::unsupported::MacWindowStyle",
                       "style", tw._w,
                       "help", "noActivates")
        except Tk.TclError:
            pass
        label = Tk.Label(tw, text=self.text, justify=Tk.LEFT,
                      background="#ffffe0", relief=Tk.SOLID, borderwidth=1,
                      )
        label.pack(ipadx=1) 

def _test():
    root = Tk()
    text = "This is Tcl/Tk version %s" % TclVersion
    if TclVersion >= 8.1:
        try:
            text = text + unicode("\nThis should be a cedilla: \347",
                                  "iso-8859-1")
        except NameError:
            pass # no unicode support
    label = Label(root, text=text)
    label.pack()
    test = Button(root, text="Click me!",
              command=lambda root=root: root.test.configure(
                  text="[%s]" % root.test['text']))
    test.pack()
    root.test = test
    quit = Button(root, text="QUIT", command=root.destroy)
    quit.pack()
    # The following three commands are needed so the window pops
    # up on top on Windows...
    root.iconify()
    root.update()
    root.deiconify()
    root.mainloop() 

def init_gui(str_app_id):
    gui = tk.Tk()
    gui.title('App ' + str_app_id)
    gui.resizable(0,0)
    try:
        url = "http://cdn.akamai.steamstatic.com/steam/apps/" + str_app_id + "/header_292x136.jpg"
        image_bytes = urlopen(url).read()
        data_stream = io.BytesIO(image_bytes)
        pil_image = Image.open(data_stream)
        tk_image = ImageTk.PhotoImage(pil_image)
        label = tk.Label(gui, image=tk_image)
        label.image = tk_image
    except:
        label = tk.Label(gui, text="Couldn't load image")
        
    label.pack()
    return gui 

def Show(self):
        import numpy, PIL, PIL.Image, PIL.ImageTk, PIL.ImageDraw
        import Tkinter as tk
        import colour
        win = tk.Tk()
        nparr = numpy.array(self.grid.lists)
        npmin = numpy.min(nparr)
        npmax = numpy.max(nparr)
        minmaxdiff = npmax-npmin
        colorstops = [colour.Color("red").rgb,colour.Color("yellow").rgb,colour.Color("green").rgb]
        colorstops = [list(each) for each in colorstops]
        colorgrad = Listy(*colorstops)
        colorgrad.Convert("250*value")
        colorgrad.Resize(int(minmaxdiff))
        valuerange = range(int(npmin),int(npmax))
        colordict = dict(zip(valuerange,colorgrad.lists))
        print len(valuerange),len(colorgrad.lists),len(colordict)
        print "minmax",npmin,npmax
        for ypos,horizline in enumerate(self.grid.lists):
            for xpos,value in enumerate(horizline):
                relval = value/float(npmax)
                self.grid.lists[ypos][xpos] = colorgrad.lists[int((len(colorgrad.lists)-1)*relval)]
        nparr = numpy.array(self.grid.lists,"uint8")
        print "np shape",nparr.shape
        img = PIL.Image.fromarray(nparr)
        drawer = PIL.ImageDraw.ImageDraw(img)
        size = 3
        for knowncell in self.knowncells:
            x,y = (knowncell.x,knowncell.y)
            drawer.ellipse((x-size,y-size,x+size,y+size),fill="black")
        img.save("C:/Users/BIGKIMO/Desktop/test.png")
        tkimg = PIL.ImageTk.PhotoImage(img)
        lbl = tk.Label(win, image=tkimg)
        lbl.pack()
        win.mainloop()
    #INTERNAL USE ONLY 

def __init__(self, master, im):

        if im.mode == "1":
            # bitmap image
            self.image = ImageTk.BitmapImage(im, foreground="white")
            tkinter.Label.__init__(self, master, image=self.image, bd=0,
                                   bg="black")

        else:
            # photo image
            self.image = ImageTk.PhotoImage(im)
            tkinter.Label.__init__(self, master, image=self.image, bd=0)

#
# script interface 

def showtip(self, text, parenleft, parenright):
        """Show the calltip, bind events which will close it and reposition it.
        """
        # Only called in CallTips, where lines are truncated
        self.text = text
        if self.tipwindow or not self.text:
            return

        self.widget.mark_set(MARK_RIGHT, parenright)
        self.parenline, self.parencol = map(
            int, self.widget.index(parenleft).split("."))

        self.tipwindow = tw = Toplevel(self.widget)
        self.position_window()
        # remove border on calltip window
        tw.wm_overrideredirect(1)
        try:
            # This command is only needed and available on Tk >= 8.4.0 for OSX
            # Without it, call tips intrude on the typing process by grabbing
            # the focus.
            tw.tk.call("::tk::unsupported::MacWindowStyle", "style", tw._w,
                       "help", "noActivates")
        except TclError:
            pass
        self.label = Label(tw, text=self.text, justify=LEFT,
                           background="#ffffe0", relief=SOLID, borderwidth=1,
                           font = self.widget['font'])
        self.label.pack()

        self.checkhideid = self.widget.bind(CHECKHIDE_VIRTUAL_EVENT_NAME,
                                            self.checkhide_event)
        for seq in CHECKHIDE_SEQUENCES:
            self.widget.event_add(CHECKHIDE_VIRTUAL_EVENT_NAME, seq)
        self.widget.after(CHECKHIDE_TIME, self.checkhide_event)
        self.hideid = self.widget.bind(HIDE_VIRTUAL_EVENT_NAME,
                                       self.hide_event)
        for seq in HIDE_SEQUENCES:
            self.widget.event_add(HIDE_VIRTUAL_EVENT_NAME, seq) 

def attach(self, canvas, x=10, y=10):
        if canvas is self.canvas:
            self.canvas.coords(self.id, x, y)
            return
        if self.canvas:
            self.detach()
        if not canvas:
            return
        label = Tkinter.Label(canvas, text=self.name,
                              borderwidth=2, relief="raised")
        id = canvas.create_window(x, y, window=label, anchor="nw")
        self.canvas = canvas
        self.label = label
        self.id = id
        label.bind("<ButtonPress>", self.press) 

def plot(self, width_in=400, height_in=400):

		import colormap
		import Tkinter

		cmax = max(self.values())
		cmin = min(self.values())
		
		offset =  0.05*min(width_in, height_in)
		xmin, ymin, xmax, ymax = 0,0,self.size()[0], self.size()[1]
		scale =  min(0.9*width_in, 0.9*height_in)/max(xmax-xmin, ymax-ymin)

		root = Tkinter.Tk()
		frame = Tkinter.Frame(root)
		frame.pack()
		
		text = Tkinter.Label(width=20, height=10, text='matrix sparsity')
		text.pack()
		

		canvas = Tkinter.Canvas(bg="black", width=width_in, height=height_in)
		canvas.pack()

		button = Tkinter.Button(frame, text="OK?", fg="red", command=frame.quit)
		button.pack()

		for index in self.keys():
			ix, iy = index[0], ymax-index[1]-1
			ya, xa = offset+scale*(ix  ), height_in -offset-scale*(iy  )
			yb, xb = offset+scale*(ix+1), height_in -offset-scale*(iy  )
			yc, xc = offset+scale*(ix+1), height_in -offset-scale*(iy+1)
			yd, xd = offset+scale*(ix  ), height_in -offset-scale*(iy+1)
			color = colormap.strRgb(self[index], cmin, cmax)
			canvas.create_polygon(xa, ya, xb, yb, xc, yc, xd, yd, fill=color)
		
		root.mainloop()