# Version: 0.2
# Author: Miguel Martinez Lopez
# Uncomment the next line to see my email
# print "Author's email: ", "61706c69636163696f6e616d656469646140676d61696c2e636f6d".decode("hex")
try:
import Tkinter as tk
except ImportError:
import tkinter as tk
import platform
class ScrollingArea(tk.Frame):
OS = platform.system()
def __init__(self, root, mousewheel_speed = 2, scroll_horizontally=True, scroll_vertically=True):
if scroll_horizontally==False and scroll_vertically == False:
raise Exception("No direction for scrolling indicated")
tk.Frame.__init__(self, root, borderwidth=0)
self.activeArea = None
if type(mousewheel_speed) == int:
self.mousewheel_speed = mousewheel_speed
else:
raise Exception("mousewheel_speed must be an integer.")
_onMouseWheel = lambda event: self.activeArea._onMouseWheel(event) if self.activeArea else None
if self.OS == "Linux" :
root.bind_all('<4>', _onMouseWheel, add='+')
root.bind_all('<5>', _onMouseWheel, add='+')
else:
# Windows and MacOS
root.bind_all("<MouseWheel>", _onMouseWheel, add='+')
self.scrollingArea = tk.Canvas(self, hightlightthickness=0)
self.scrollingArea.grid(row=0, column=0, sticky="nsew")
self.rowconfigure( 0, weight=1)
self.columnconfigure(0, weight=1)
self.innerFrame= tk.Frame(self.scrollingArea)
self.innerFrame.pack()
self.scrollingArea.create_window(0, 0, window=self.innerFrame, anchor='nw', tags="inner_frame")
self.scrollingArea.bind('<Configure>', self._configure_widget)
if scroll_vertically:
self.vscrollbar = tk.Scrollbar(self, orient=tk.VERTICAL)
self.vscrollbar._onMouseWheel = self._build_function_onMouseWheel('y')
self.vscrollbar.grid(row=0, column=1,sticky="ns")
self.scrollingArea.configure(yscrollcommand=self.vscrollbar.set)
self.vscrollbar['command']=self.scrollingArea.yview
else:
self.vscrollbar = None
if scroll_horizontally:
self.hscrollbar = tk.Scrollbar(self, orient=tk.HORIZONTAL)
self.hscrollbar._onMouseWheel = self._build_function_onMouseWheel('x')
self.hscrollbar.grid(row=1, column=0, sticky="ew")
self.scrollingArea.configure(xscrollcommand=self.hscrollbar.set)
self.hscrollbar['command']=self.scrollingArea.xview
else:
self.hscrollbar = None
self.scrollingArea.bind('<Enter>',lambda event: self._setActiveArea(self.scrollingArea))
self.scrollingArea.bind('<Leave>', lambda event: self._unsetActiveArea())
if self.vscrollbar:
self.main_scrollbar = self.vscrollbar
else:
self.main_scrollbar = self.hscrollbar
self.scrollingArea._onMouseWheel = self.main_scrollbar._onMouseWheel
for scrollbar in (self.hscrollbar, self.vscrollbar):
if scrollbar is not None:
scrollbar.bind('<Enter>', lambda event, scrollbar=scrollbar: self._setActiveArea(scrollbar) )
scrollbar.bind('<Leave>', lambda event: self._unsetActiveArea())
def _configure_widget(self, event):
width = max(self.innerFrame.winfo_reqwidth(),self.scrollingArea.winfo_width())
height = max(self.innerFrame.winfo_reqheight(),self.scrollingArea.winfo_height())
self.scrollingArea.config(scrollregion="0 0 %s %s" % (width, height))
self.scrollingArea.itemconfigure("inner_frame", width=width)
self.scrollingArea.itemconfigure("inner_frame", height=height)
def _setActiveArea(self, widget):
self.activeArea = widget
def _unsetActiveArea(self):
self.activeArea = None
def _build_function_onMouseWheel(self, orient):
view_command = getattr(self.scrollingArea, orient+'view')
if self.OS == 'Linux':
def onMouseWheel(event):
if event.num == 4:
view_command("scroll",(-1)*self.mousewheel_speed,"units" )
elif event.num == 5:
view_command("scroll",self.mousewheel_speed,"units" )
elif self.OS == 'Windows':
def onMouseWheel(event):
view_command("scroll",(-1)*int((event.delta/120)*self.mousewheel_speed),"units" )
elif self.OS == 'Darwin':
def onMouseWheel(event):
view_command("scroll",event.delta,"units" )
return onMouseWheel
if __name__== '__main__':
root = tk.Tk()
scrolling_area = ScrollingArea(root)
scrolling_area.pack(expand=1, fill=tk.BOTH)
for i in range(20):
rowFrame = tk.Frame(scrolling_area.innerFrame)
rowFrame.pack()
for j in range(8):
tk.Label(rowFrame, text="Label %s, %s" % (str(i), str(j))).pack(side=tk.LEFT)
root.mainloop()
Diff to Previous Revision
--- revision 3 2016-11-26 02:20:05
+++ revision 4 2016-11-26 02:20:31
@@ -4,7 +4,6 @@
# print "Author's email: ", "61706c69636163696f6e616d656469646140676d61696c2e636f6d".decode("hex")
try:
-
import Tkinter as tk
except ImportError:
import tkinter as tk
