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Add events for the scroll wheel in Linux. #2365

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Add events for the scroll wheel in Linux. #2365

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6 changes: 4 additions & 2 deletions customtkinter/windows/widgets/ctk_scrollable_frame.py
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Original file line number Diff line number Diff line change
Expand Up @@ -75,6 +75,8 @@ def __init__(self,
self.bind("<Configure>", lambda e: self._parent_canvas.configure(scrollregion=self._parent_canvas.bbox("all")))
self._parent_canvas.bind("<Configure>", self._fit_frame_dimensions_to_canvas)
self.bind_all("<MouseWheel>", self._mouse_wheel_all, add="+")
self.bind_all("<Button-4>", self._mouse_wheel_all, add="+")
self.bind_all("<Button-5>", self._mouse_wheel_all, add="+")
self.bind_all("<KeyPress-Shift_L>", self._keyboard_shift_press_all, add="+")
self.bind_all("<KeyPress-Shift_R>", self._keyboard_shift_press_all, add="+")
self.bind_all("<KeyRelease-Shift_L>", self._keyboard_shift_release_all, add="+")
Expand Down Expand Up @@ -263,10 +265,10 @@ def _mouse_wheel_all(self, event):
else:
if self._shift_pressed:
if self._parent_canvas.xview() != (0.0, 1.0):
self._parent_canvas.xview("scroll", -event.delta, "units")
self._parent_canvas.xview("scroll", -10 if event.num == 4 else 10, "units")
else:
if self._parent_canvas.yview() != (0.0, 1.0):
self._parent_canvas.yview("scroll", -event.delta, "units")
self._parent_canvas.yview("scroll", -10 if event.num == 4 else 10, "units")

def _keyboard_shift_press_all(self, event):
self._shift_pressed = True
Expand Down
7 changes: 6 additions & 1 deletion customtkinter/windows/widgets/ctk_scrollbar.py
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Original file line number Diff line number Diff line change
Expand Up @@ -86,6 +86,9 @@ def _create_bindings(self, sequence: Optional[str] = None):
self._canvas.bind("<B1-Motion>", self._clicked)
if sequence is None or sequence == "<MouseWheel>":
self._canvas.bind("<MouseWheel>", self._mouse_scroll_event)
if sequence is None or sequence == "<Button-4>" or sequence == "<Button-5>":
self._canvas.bind("<Button-4>", self._mouse_scroll_event)
self._canvas.bind("<Button-5>", self._mouse_scroll_event)

def _set_scaling(self, *args, **kwargs):
super()._set_scaling(*args, **kwargs)
Expand Down Expand Up @@ -246,8 +249,10 @@ def _mouse_scroll_event(self, event=None):
if self._command is not None:
if sys.platform.startswith("win"):
self._command('scroll', -int(event.delta/40), 'units')
else:
elif sys.platform == "darwin":
self._command('scroll', -event.delta, 'units')
else:
self._command('scroll', -10 if event.num == 4 else 10, 'units')

def set(self, start_value: float, end_value: float):
self._start_value = float(start_value)
Expand Down