如何解决XY滚动区域的Tkinter非Y滚动标题
我正在寻找一种方法来为可以在X方向上滚动但不能在Y方向上滚动的表保留静态标头，同时又喜欢在X和Y上均可滚动的表。（例如电子表格中列字母总是可见的，或者当您冻结Google表格中的行时。
对于数据cols = [“”，“”]（列表）和行= [{“”：“”，“”：“”}，{“”：“”，“”：“”}]]（词典列表）
代码：
def table_scroll_Y(self,*args):
self.table_title.yview
self.table_data.yview
def build_table(self,cols,data):
for child in self.tablebase.winfo_children(): # Clear existing table
child.pack_forget()
child.destroy()
colour1 = "#EEEEEE" # sets title colour
rheight = 1 # sets row height
rowsize = []
#Note: self.tku.cFrame(**kwrds) = Frame(*args) and frame.pack(*args)
layout1=self.tku.cFrame(self.tablebase,side=LEFT,fill=BOTH,expand=1,bg="white") #split between table area and scroll bar for fixed Y scroll
self.Vscroll = Scrollbar(self.tablebase,orient="vertical")
self.Vscroll.pack(side=RIGHT,fill=Y)
layout2 = self.tku.cFrame(layout1,side=TOP,bg="white") #split between table and bottom scroll for fixed X scroll
self.Hscroll = Scrollbar(layout1,orient="horizontal")
self.Hscroll.pack(side=BOTTOM,fill=X)
self.table_title = Canvas(layout2,bg="red",highlightthickness=0,height=10) #X scroll area for Column titles
self.table_data = Canvas(layout2,bg="blue",yscrollcommand=self.Vscroll.set,xscrollcommand=self.Hscroll.set) # XY scroll area for table data
self.Vscroll.config(command = self.table_scroll_Y) #configures command for Y on both scroll areas
self.Hscroll.config(command = self.table_data.xview) #configure command for X on data scroll region
#crate frames to hold all the widgets
title_frame = Frame(self.table_title,bg="orange")
title_frame.pack(padx=15,pady=15,expand=1)
data_frame = Frame(self.table_data,bg="purple")
data_frame.pack(padx=15,expand=1)
#create windows and pack widgets
self.table_title.pack(side=TOP,fill=X,padx=5,pady=5)
self.table_data.pack(side=TOP,pady=5)
self.table_title.create_window(0,window=title_frame)
self.table_data.create_window(0,window=data_frame)
self.table_title.config(scrollregion=self.table_title.bbox("all"))
self.table_data.config(scrollregion=self.table_data.bbox("all"))
self.table_title.yview_moveto(0)
self.table_data.yview_moveto(0)
self.table_data.xview_moveto(0)
#Build table column headers
row = self.tku.cFrame(title_frame,borderwidth=1,relief="ridge",highlightbackground="black")
for item in cols:
Label(row,text=item,width=len(item)+1,borderwidth=2,relief="groove",heigh=rheight,bg=colour1).pack(side=LEFT,expand=1)
rowsize.append(len(item)+1)
#Build table data
i = 0
for datarow in data:
row = self.tku.cFrame(data_frame,highlightbackground="black")
for key,value in datarow.items():
Label(row,text=value,width=rowsize[i],bg="white").pack(side=LEFT,expand=1)
if i <= len(rowsize):
i = 0
else:
i+=1
在我的代码中，滚动条位于正确的位置，但是小部件似乎向左偏移并偏离其内置框架的顶部（self.tablebase是容纳所有桌子物品的标准框架）。 / p>
解决方法
因此，我设法将滚动条重新绑定到各自的区域，方法是使用完整的lambda函数替换command = canvas.xview，该函数将其绑定到两个cavas对象并一起滚动。
def table_scroll_X(self,*args): # args = ('moveto',0-1) and can be used with xview_moveto(pos) command
self.table_title.xview_moveto(args[1])
self.table_data.xview_moveto(args[1])
def build_table(self,cols,data):
# Clear existing widget so we have a fresh start (used for updating to a new table)
for child in self.tablebase.winfo_children():
child.pack_forget()
child.destroy()
##---
colour1 = "#EEEEEE" # sets title colour to a light gray colour
rheight = 1 # sets row height
rowsize = [] # used to keep row sizes uniform
#Note: self.tku.cFrame(**kwrds) == 'frame = Frame(*args)' and 'frame.pack(*args)' with 'return frame',used to make crating common widgets a little quicker.
#split between table area and scroll bar for fixed Y scroll (Prevents scrolling the scrollbar off screen)
layout1=self.tku.cFrame(self.tablebase,side=LEFT,fill=BOTH,expand=1,bg="white")
self.Vscroll = Scrollbar(self.tablebase,orient="vertical")
self.Vscroll.pack(side=RIGHT,fill=Y)
#split between table area and scroll bar for fixed X scroll
layout2 = self.tku.cFrame(layout1,side=TOP,bg="white")
self.Hscroll = Scrollbar(layout1,orient="horizontal")
self.Hscroll.pack(side=BOTTOM,fill=X)
#create the Canvas objects that can be scrolled
self.table_title = Canvas(layout2,bg="white",highlightthickness=0,height=25) #X scroll area for Column titles
self.table_data = Canvas(layout2,yscrollcommand=self.Vscroll.set,xscrollcommand=self.Hscroll.set) # X/Y scroll area for table data
self.Vscroll.config(command = self.table_data.yview) #configures command for Y only on the data (up/down)
self.Hscroll.config(command = self.table_scroll_X) #configure command for X on data scroll region (left/right)
#crate frames to hold all the widgets
title_frame = Frame(self.table_title,bg="white")
title_frame.pack(padx=15,pady=15,expand=1)
data_frame = Frame(self.table_data,bg="white")
data_frame.pack(padx=15,expand=1)
#create windows and pack widgets
self.table_title.pack(side=TOP,fill=X,padx=0,pady=0)
self.table_data.pack(side=TOP,pady=0)
title_frame.bind("<Configure>",lambda e: self.table_title.configure(scrollregion=self.table_title.bbox("all")))
data_frame.bind("<Configure>",lambda e: self.table_data.configure(scrollregion=self.table_data.bbox("all")))
self.table_title.create_window(0,window=title_frame)
self.table_data.create_window(0,window=data_frame)
#Build table column headers
row = self.tku.cFrame(title_frame,borderwidth=1,relief="ridge",highlightbackground="black",side=LEFT)
i = 0
for item in cols:
rowsize.append(math.ceil(len(item)*1.7)) # allows for some text size discrepencys.
Label(row,text=item,font='TkFixedFont',width=rowsize[i],borderwidth=2,relief="groove",heigh=rheight,bg=colour1).pack(side=LEFT)
if i <= len(rowsize):
i=0
else:
i+=1
#Build table data
print(rowsize)
i = 0
for datarow in data:
row = self.tku.cFrame(data_frame,highlightbackground="black")
for key,value in datarow.items():
Label(row,text=value,bg="white").pack(side=LEFT)
if i <= len(rowsize):
i=0
else:
i+=1
#update the interface to apply sizing and move all scrollbars to 0,0
self.root.update()
self.root.update_idletasks()
self.table_title.yview_moveto(0)
self.table_data.yview_moveto(0)
self.table_title.xview_moveto(0)
self.table_data.xview_moveto(0)
如果您只想冻结单个行或一列或两者，则可以重新实现为使滚动条控制多个画布对象。
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