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from Tkinter import *
class ScrolledWidgetList(Frame):
def __init__(self,master=None,width=100,height=100,bg='white',pady=10,topspace=0,bottomspace=0):
self.width = width
self.height = height
self.pady = pady
self.topspace = topspace
self.bottomspace = bottomspace
Frame.__init__(self,master)
self.border = Frame(self,relief='solid',bd=1)
self.border.grid(row=0,column=0)
self.container = Canvas(self.border,width=width,height=height,bg=bg,scrollregion=(0,0,0,height),highlightthickness=0)
self.container.pack()
self.scrollbarY = Scrollbar(self,orient=VERTICAL,command=self.scrollY)
self.scrollbarY.grid(row=0,column=1,sticky=NS)
self.container['yscrollcommand'] = self.scrollbarY.set
def scrollY(self,mode=None,value=None,units=None):
self.container.yview(mode,value,units)
self.container.update()
self.placewidget()
def refresh(self):
try:
if len(self.container.winfo_children()) > len(self.Y): # a widget has been added
self.Y.append([self.Y[-1][0]+self.Y[-1][1]+self.pady,self.container.winfo_children()[-1].winfo_reqheight()])
elif len(self.container.winfo_children()) < len(self.Y): # one or more widgets has been deleted
while len(self.container.winfo_children()) < len(self.Y):
self.Y.remove(self.Y[-1])
except: # this is the very first widget to be added
self.Y = []
self.Y.append([self.pady+self.topspace,self.container.winfo_children()[0].winfo_reqheight()])
self.container.configure(scrollregion=(0,0,0,self.Y[-1][0]+self.Y[-1][1]+self.pady+self.bottomspace))
self.container.yview('moveto',1)
self.container.update()
self.placewidget()
def placewidget(self):
self.container.yview('moveto',self.scrollbarY.get()[0])
Ymodificator = self.scrollbarY.get()[0]*float(self.container['scrollregion'].split()[3])
for i in range(len(self.container.winfo_children())):
self.container.winfo_children()[i].place(relx=0.5,y=self.Y[i][0]-Ymodificator,anchor=N)
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