Tkinter在畫布上調整大小滾動條不調整

Question

儘管我相信我的問題很簡單，但我找不到答案，也無法找出如何解決此問題。 基本上，我有一個畫布，一旦按下按鈕，它就會被調整大小（如放大），但是，爲了覆蓋空洞滾動區域，我的滾動條不調整。

有誰知道如何解決這個問題？

代碼：（有點討厭）

from Tkinter import * 

class Graphic(Tk): #Graphical Interface 
    def __init__(self, x, y): 

     #INITIALIZATION 
     Tk.__init__(self) 
     self.border = 10 
     self.size_x = x 
     self.size_y = y 
     self.mouse = "" 
     self.cross_list = [] 
     self.mode = "" 

     #SIZE 
     self.app_sizex = 1800 
     self.app_sizey = 1000 


     self.title("Graphic") 
     self.geometry(str(self.app_sizex+10) + "x" + str(self.app_sizey+40)) 

     #CANVAS + BORDER 
     self.canvas = Canvas(self, width = self.app_sizex, height = self.app_sizey, scrollregion=(0,0,x,y)) 
     self.canvas.grid(row=0, column=0, sticky="nsew") 
     self.canvas.create_line(self.border, self.border, self.border, y-self.border) 
     self.canvas.create_line(x-self.border, self.border, x-self.border, y-self.border) 
     self.canvas.create_line(self.border, self.border, x-self.border, self.border) 
     self.canvas.create_line(self.border, y-self.border, x-self.border, y-self.border) 
     self.cross_x = self.canvas.create_line(self.border, self.border, self.border, self.border) 
     self.cross_y = self.canvas.create_line(self.border, self.border, self.border, self.border) 

     #SCROLLING BARS 
     self.vbar=Scrollbar(self,orient=VERTICAL) 
     self.vbar.grid(row=0, column=1, sticky="ns") 
     self.vbar.config(command=self.canvas.yview) 
     self.hbar=Scrollbar(self,orient=HORIZONTAL) 
     self.hbar.grid(row=2, column=0, sticky="ew") 
     self.hbar.config(command=self.canvas.xview) 
     self.canvas.config(xscrollcommand=self.hbar.set, yscrollcommand=self.vbar.set) 

     #BUTTONS 
     self.buttonframe = Frame(self) 
      self.buttonframe.grid(row=1, column=0)   
      Button(self.buttonframe, text = "+", command=self.zoom_in).grid(row=0, column=0) 
      Button(self.buttonframe, text = "-").grid(row=0, column=1) 


     self.canvas.bind("<1>",  lambda event: self.canvas.focus_set()) 
     self.canvas.bind("a", lambda event: self.canvas.xview_scroll(-1, "units")) 
      self.canvas.bind("d", lambda event: self.canvas.xview_scroll(1, "units")) 
      self.canvas.bind("w", lambda event: self.canvas.yview_scroll(-1, "units")) 
      self.canvas.bind("s", lambda event: self.canvas.yview_scroll(1, "units")) 
     self.canvas.focus_set() 

    def zoom_in(self): 
     #Clean canvas 
     self.canvas.delete("all") 
     self.size_x = self.size_x * 1.1 
     self.size_y = self.size_y * 1.1 
     x=self.size_x 
     y=self.size_y 
     self.canvas.scrollregion=(0,0,self.size_x,self.size_y) 
     self.canvas.create_line(self.border, self.border, self.border, y-self.border) 
     self.canvas.create_line(x-self.border, self.border, x-self.border, y-self.border) 
     self.canvas.create_line(self.border, self.border, x-self.border, self.border) 
     self.canvas.create_line(self.border, y-self.border, x-self.border, y-self.border) 

     #SCROLLING BARS 
     self.vbar.config(command=self.canvas.yview) 
     self.hbar.config(command=self.canvas.xview) 
     self.canvas.config(xscrollcommand=self.hbar.set, yscrollcommand=self.vbar.set) 

graphics_window = Graphic(1000, 1000) 
graphics_window.mainloop() 

Answer 1

我花了好一段時間沒有一個最小的，完整的和可驗證的例子，但我得到的東西運行，我認爲做你腦子裏的東西。當我們放大時，我冒昧地添加了一些東西來看待。檢查出來：

from tkinter import * 

class zoomer(Tk): 

    def __init__(self): 
     x=100 
     y=100 
     Tk.__init__(self) 
     self.border = 10 
     self.size_x = x 
     self.size_y = y 

     #SIZE 
     self.app_sizex = 200 
     self.app_sizey = 200 
     fontSize=int(x/20) 

     self.title("Graphic") 
     self.geometry(str(self.app_sizex+10) + "x" + str(self.app_sizey+40)) 

     #CANVAS + BORDER 
     self.canvas = Canvas(self, width = self.app_sizex, height = self.app_sizey, scrollregion=(0,0,x,y)) 
     self.canvas.grid(row=0, column=0, sticky="nsew") 
     self.canvas.create_line(self.border, self.border, self.border, y-self.border) 
     self.canvas.create_line(x-self.border, self.border, x-self.border, y-self.border) 
     self.canvas.create_line(self.border, self.border, x-self.border, self.border) 
     self.canvas.create_line(self.border, y-self.border, x-self.border, y-self.border) 
     self.canvas.create_line(self.border, self.border, x-self.border, y-self.border) 
     text1=self.canvas.create_text(50, 50, fill="white",font=("Purisa", fontSize)) 
     self.canvas.itemconfig(text1, text="Graphic Text") 

     #SCROLLING BARS 
     self.vbar=Scrollbar(self,orient=VERTICAL) 
     self.vbar.grid(row=0, column=1, sticky="ns") 
     self.vbar.config(command=self.canvas.yview) 
     self.hbar=Scrollbar(self,orient=HORIZONTAL) 
     self.hbar.grid(row=2, column=0, sticky="ew") 
     self.hbar.config(command=self.canvas.xview) 
     self.canvas.config(xscrollcommand=self.hbar.set, yscrollcommand=self.vbar.set) 

     #zoom button 
     save_button = Button(self, text = "Zoom") 
     save_button["command"] = lambda: self.zoom_in() 
     save_button.grid(row=3, column = 0, pady = 5) 

    def zoom_in(self): 
     #Clean canvas 
     self.canvas.delete("all") 
     self.size_x = int(self.size_x * 1.1) 
     self.size_y = int(self.size_y * 1.1) 
     x=self.size_x 
     y=self.size_y 
     fontSize=int(x/20) 
     self.canvas.create_line(self.border, self.border, self.border, y-self.border) 
     self.canvas.create_line(x-self.border, self.border, x-self.border, y-self.border) 
     self.canvas.create_line(self.border, self.border, x-self.border, self.border) 
     self.canvas.create_line(self.border, y-self.border, x-self.border, y-self.border) 
     self.canvas.create_line(self.border, self.border, x-self.border, y-self.border) 
     text1=self.canvas.create_text(self.size_x/2, self.size_y/2, fill="white",font=("Purisa", fontSize)) 
     self.canvas.itemconfig(text1, text="Graphic Text") 
     self.canvas.configure(scrollregion=self.canvas.bbox("all")) 

     #SCROLLING BARS 
     self.vbar.config(command=self.canvas.yview) 
     self.hbar.config(command=self.canvas.xview) 
     self.canvas.config(xscrollcommand=self.hbar.set, yscrollcommand=self.vbar.set) 


if __name__ == '__main__': 
    my_gui=zoomer() 
    my_gui.mainloop() 

我會留下你缺少的練習。 （這意味着我得到它運行，但我懶得回去弄清楚究竟出了什麼問題。）