From 344b30e68420c80dc2f2de97c44e87710864bb6e Mon Sep 17 00:00:00 2001
From: tschiman <tomschimansky@gmail.com>
Date: Tue, 11 Jul 2023 14:15:06 +0200
Subject: [PATCH] fixed scrollable frame mouse wheel on linux #1356

---
 .../windows/widgets/ctk_scrollable_frame.py       | 15 ++++++++++++---
 .../test_scrollable_frame.py                      |  2 +-
 2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/customtkinter/windows/widgets/ctk_scrollable_frame.py b/customtkinter/windows/widgets/ctk_scrollable_frame.py
index 685deb2..20b3a68 100644
--- a/customtkinter/windows/widgets/ctk_scrollable_frame.py
+++ b/customtkinter/windows/widgets/ctk_scrollable_frame.py
@@ -74,7 +74,13 @@ class CTkScrollableFrame(tkinter.Frame, CTkAppearanceModeBaseClass, CTkScalingBa
 
         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="+")
+
+        if "linux" in sys.platform:
+            self.bind_all("<Button-4>", self._mouse_wheel_all, add="+")
+            self.bind_all("<Button-5>", self._mouse_wheel_all, add="+")
+        else:
+            self.bind_all("<MouseWheel>", 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="+")
@@ -243,6 +249,8 @@ class CTkScrollableFrame(tkinter.Frame, CTkAppearanceModeBaseClass, CTkScalingBa
             self._parent_canvas.configure(xscrollincrement=1, yscrollincrement=1)
         elif sys.platform == "darwin":
             self._parent_canvas.configure(xscrollincrement=4, yscrollincrement=8)
+        else:
+            self._parent_canvas.configure(xscrollincrement=30, yscrollincrement=30)
 
     def _mouse_wheel_all(self, event):
         if self.check_if_master_is_canvas(event.widget):
@@ -263,10 +271,11 @@ class CTkScrollableFrame(tkinter.Frame, CTkAppearanceModeBaseClass, CTkScalingBa
             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(-1 if event.num == 4 else 1, "units")
                 else:
                     if self._parent_canvas.yview() != (0.0, 1.0):
-                        self._parent_canvas.yview("scroll", -event.delta, "units")
+                        self._parent_canvas.yview_scroll(-1 if event.num == 4 else 1, "units")
+
 
     def _keyboard_shift_press_all(self, event):
         self._shift_pressed = True
diff --git a/test/manual_integration_tests/test_scrollable_frame.py b/test/manual_integration_tests/test_scrollable_frame.py
index c7c0127..a5a377a 100644
--- a/test/manual_integration_tests/test_scrollable_frame.py
+++ b/test/manual_integration_tests/test_scrollable_frame.py
@@ -26,7 +26,7 @@ frame_4.configure(label_text="CTkScrollableFrame")
 frame_5 = customtkinter.CTkScrollableFrame(app, orientation="vertical", label_text="CTkScrollableFrame", corner_radius=0)
 frame_5.grid(row=0, column=2, rowspan=2, sticky="nsew")
 
-for i in range(100):
+for i in range(20):
     customtkinter.CTkCheckBox(frame_1).grid(row=i, padx=10, pady=10)
     customtkinter.CTkCheckBox(frame_2).grid(row=i, padx=10, pady=10)
     customtkinter.CTkCheckBox(frame_3).grid(row=0, column=i, padx=10, pady=10)