The default handler of pannedwindow is replaced by a rectangle with the color and size that the user wants.
It's similar to jquery Layout plugin: http://layout.jquery-dev.com/
Python, 202 lines
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#
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# print("Author's email: %s"%"61706c69636163696f6e616d656469646140676d61696c2e636f6d".decode("hex"))
try:
from Tkinter import Frame, PanedWindow as Tk_PanedWindow
from ttk import Label
from Tkconstants import HORIZONTAL, VERTICAL
except ImportError:
from tkinter import Frame, PanedWindow as Tk_PanedWindow
from tkinter.ttk import Label
from tkinter.constants import HORIZONTAL, VERTICAL
class Handle(Frame):
def __init__(self, panedwindow, sash_index, disallow_dragging=False, on_click=None, **kw):
image = kw.pop("image", None)
Frame.__init__(self, panedwindow, class_="Handle", **kw)
self._sash_index = sash_index
if image:
self._event_area = Label(self, image=image)
self._event_area.pack()
else:
self._event_area = self
self._center = int(self._event_area.winfo_reqwidth()/2), int(self._event_area.winfo_reqheight()/2)
if disallow_dragging:
if on_click:
self._event_area.bind('<Button-1>', lambda event: on_click())
else:
self._event_area.bind('<Button-1>', self._initiate_motion)
self._event_area.bind('<B1-Motion>', self._on_dragging)
self._event_area.bind('<ButtonRelease-1>', self.master._on_release)
def _initiate_motion(self, event) :
self.master._active_sash = self._sash_index
self._dx = event.x
self._dy = event.y
@property
def sash_index(self):
return self._sash_index
def _on_dragging(self):
raise NotImplementedError
class Vertical_Handle(Handle):
def _on_dragging(self, event):
y = event.y_root - self.master.winfo_rooty() - self._dy
self.master.sash_place(self._sash_index, 1, y)
self.master._update_position_all_handles()
class Horizontal_Handle(Handle):
def _on_dragging(self, event):
x = event.x_root - self.master.winfo_rootx() - self._dx
self.master.sash_place(self._sash_index, x, 1)
self.master._update_position_all_handles()
class PanedWindow(Tk_PanedWindow):
def __init__(self, master, color="gray", size=60, sashpad=2, disallow_dragging=False, on_click=None, image=None, cursor=None, opaqueresize=True):
Tk_PanedWindow.__init__(self, master, showhandle = False, orient=self.ORIENT, sashpad=sashpad, opaqueresize=opaqueresize)
self._active_sash = None
self._on_click = on_click
self._image = image
self._color = color
self._cursor = cursor
self._configure_callbacks = []
if not opaqueresize:
disallow_dragging = True
self._disallow_dragging = disallow_dragging
self._handle_list = []
self._list_of_panes = []
if self.ORIENT == VERTICAL:
self._width= size
self._height = 2*sashpad
else:
self._width = 2*sashpad
self._height= size
if opaqueresize:
self.bind('<Button-1>', self._on_mark_sash)
self.bind('<B1-Motion>', self._on_drag_sash)
self.bind('<ButtonRelease-1>', self._on_release)
def _on_release(self, event):
handle_index = self._active_sash
callback_id1 = self._list_of_panes[handle_index+1].bind("<Configure>", lambda event, handle_index=handle_index: self._on_configure_pane(handle_index), "+")
callback_id2 = self._list_of_panes[handle_index].bind("<Configure>", lambda event, handle_index=handle_index: self._on_configure_pane(handle_index), "+")
self._configure_callbacks[handle_index] = (callback_id1,callback_id2)
self._active_sash = None
def _on_drag_sash(self, event):
coord_x = event.x
coord_y = event.y
Tk_PanedWindow.sash_place(self, self._active_sash, coord_x, coord_y)
self._update_position_all_handles()
return "break"
def add(self, pane, **kwargs):
Tk_PanedWindow.add(self, pane, **kwargs)
self._list_of_panes.append(pane)
quantity_of_panes = len(self._list_of_panes)
if quantity_of_panes >= 2:
handle_index = quantity_of_panes-2
handle = self.HANDLE_CLASS(self, handle_index, bg=self._color, height=self._height, width=self._width, cursor = self._cursor, disallow_dragging=self._disallow_dragging, on_click=self._on_click, image=self._image)
if self.ORIENT == VERTICAL:
handle.place(relx=0.5, anchor="c")
else:
handle.place(rely=0.5, anchor="c")
self._handle_list.append(handle)
callback_id1 = pane.bind("<Configure>", lambda event, handle_index=handle_index: self._on_configure_pane(handle_index), "+")
callback_id2 = self._list_of_panes[handle_index].bind("<Configure>", lambda event, handle_index=handle_index: self._on_configure_pane(handle_index), "+")
self._configure_callbacks.append((callback_id1,callback_id2))
def _on_mark_sash(self, event):
identity = self.identify(event.x, event.y)
if len(identity) ==2:
self._active_sash= handle_index = identity[0]
callback_id1,callback_id2 = self._configure_callbacks[handle_index]
self._list_of_panes[handle_index+1].unbind(callback_id1)
self._list_of_panes[handle_index].unbind(callback_id2)
else:
self._active_sash = None
class Vertical_PanedWindow(PanedWindow):
ORIENT = VERTICAL
HANDLE_CLASS = Vertical_Handle
def _on_configure_pane(self, sash_index):
x,y = Tk_PanedWindow.sash_coord(self, sash_index)
self._handle_list[sash_index].place(y=y)
def _update_position_all_handles(self):
for sash_index, handle in enumerate(self._handle_list):
x,y = Tk_PanedWindow.sash_coord(self, sash_index)
handle.place(y=y)
class Horizontal_PanedWindow(PanedWindow):
ORIENT = HORIZONTAL
HANDLE_CLASS = Horizontal_Handle
def _update_position_all_handles(self):
for sash_index, handle in enumerate(self._handle_list):
x,y = Tk_PanedWindow.sash_coord(self, sash_index)
handle.place(x=x)
def _on_configure_pane(self, sash_index):
x,y = Tk_PanedWindow.sash_coord(self, sash_index)
self._handle_list[sash_index].place(x=x)
if __name__ == "__main__":
try:
from Tkinter import Tk, PhotoImage
except ImportError:
from tkinter import Tk
root = Tk()
# Use for example this image for horizontal panedwindow
# image = PhotoImage(data="R0lGODlhAwAYAPIAAEBAQGBgYICAgLu7u8zMzAAAAAAAAAAAACH5BAEAAAUALAAAAAADABgAAAMXCCFRI4OUSRVzUNJp24sbt3hZWHQYOCUAOw==")
image = PhotoImage(data="R0lGODlhGAADAPIFAEBAQGBgYICAgLu7u8zMzAAAAAAAAAAAACH5BAEAAAUALAAAAAAYAAMAAAMaWBJQym61N2UZJTisb96fpxGD4JBmgZ4lKyQAOw==")
panedwindow = Vertical_PanedWindow(root, sashpad = 3, image=image)
panedwindow.pack(fill="both", expand=True)
for color in ("red", "blue","green"):
frame = Frame(panedwindow, width=200, height=200, bg=color)
panedwindow.add(frame, stretch="always")
root.mainloop()
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