我正在尝试使用Tkinter Canvas
(self._canvas
)来使用create_window
函数创建窗口。该函数的窗口字段为Tkinter Frame
(self._tableFrame
)。有人可以帮我解决如何让self._tableFrame
自动扩展到self._canvas
的大小(即使用户更改了窗口大小后)吗?
代码:
from Tkinter import Scrollbar as tkScrollBar
from Tkinter import Frame as tkFrame
from Tkinter import Canvas as tkCanvas
from Tkinter import Entry as tkEntry
from Tkinter import StringVar as tkStringVar
from Tkinter import Tk, HORIZONTAL, N, S, E, W, RIGHT, LEFT, BOTTOM, X, Y, BOTH
from Tkinter import TOP
class Widget(tkFrame):
def __init__(self, master=None):
tkFrame.__init__(self, master)
self._str = tkStringVar()
self._widget = tkEntry(self)
self._widget.config(textvariable=self._str, borderwidth=1, width=0)
self._widget.pack(expand=True, fill=X)
def settext(self, str_):
self._str.set(str_)
def gettext(self):
return self._str.get()
class Application(tkFrame):
def __init__(self, rows, cols, master=None):
tkFrame.__init__(self, master)
yScroll = tkScrollBar(self)
xScroll = tkScrollBar(self, orient=HORIZONTAL)
self._canvas = tkCanvas(self,
yscrollcommand=yScroll.set, xscrollcommand=xScroll.set)
yScroll.config(command=self._canvas.yview)
xScroll.config(command=self._canvas.xview)
self._table = [[0 for x in range(rows)] for x in range(cols)]
self._tableFrame = tkFrame(self._canvas)
for col in range(cols):
self._tableFrame.grid_columnconfigure(col, weight=1)
for row in range(rows):
self._table[row][col] = Widget(master=self._tableFrame)
self._table[row][col].settext("(%d, %d)" % (row, col))
self._table[row][col].grid(row=row, column=col, sticky=E+W)
# For debugging
self._canvas.config(background="blue")
self._tableFrame.config(background="red")
yScroll.pack(side=RIGHT, fill=Y)
xScroll.pack(side=BOTTOM, fill=X)
self._canvas.create_window(0, 0, window=self._tableFrame, anchor=N+W)
self._canvas.pack(side=LEFT, fill=BOTH, expand=True)
tkRoot = Tk()
# Application Size and Center the Application
appSize = (800, 600)
w = tkRoot.winfo_screenwidth()
h = tkRoot.winfo_screenheight()
x = w / 2 - appSize[0] / 2
y = h / 2 - appSize[1] / 2
tkRoot.geometry("%dx%d+%d+%d" % (appSize + (x, y)))
tkRoot.update_idletasks() # Force geometry update
app = Application(5, 5, master=tkRoot)
app.pack(side=TOP, fill=BOTH, expand=True)
tkRoot.mainloop()
答案 0 :(得分:9)
您可以将self._canvas
与事件<Configure>
绑定,然后使用添加到画布的框架的id调用itemconfig
(而不是直接引用该窗口小部件):
def __init__(self, rows, cols, master=None):
# ...
self._frame_id = self._canvas.create_window(0, 0, window=self._tableFrame, anchor=N+W)
self._canvas.pack(side=LEFT, fill=BOTH, expand=True)
self._canvas.bind("<Configure>", self.resize_frame)
def resize_frame(self, e):
self._canvas.itemconfig(self._frame_id, height=e.height, width=e.width)
顺便说一下,我建议你重写import
语句,我认为这些语句非常重复且 unpythonic :
import Tkinter as tk
# Use tk.Tk, tk.Canvas, etc.