From 92ff508dc17831a57a4bb900d7bc218b577e066e Mon Sep 17 00:00:00 2001
From: Dexer <73297572+DexerBR@users.noreply.github.com>
Date: Sun, 5 Sep 2021 10:47:16 -0300
Subject: [PATCH] Fixed unexpected overscrolling when using mouse wheel (#7612)

---
 kivy/uix/textinput.py | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/kivy/uix/textinput.py b/kivy/uix/textinput.py
index 25d534bc2..810909f93 100644
--- a/kivy/uix/textinput.py
+++ b/kivy/uix/textinput.py
@@ -1504,7 +1504,8 @@ class TextInput(FocusBehavior, Widget):
                         self._trigger_update_graphics()
                 else:
                     if self.scroll_x > 0:
-                        self.scroll_x -= self.line_height
+                        self.scroll_x = max(0, self.scroll_x -
+                                            self.line_height)
                         self._trigger_update_graphics()
             if scroll_type == 'up':
                 if self.multiline:
@@ -1516,9 +1517,12 @@ class TextInput(FocusBehavior, Widget):
                         self.scroll_y += self.line_height
                         self._trigger_update_graphics()
                 else:
-                    if (self.scroll_x + self.width <
-                            self._lines_rects[-1].texture.size[0]):
-                        self.scroll_x += self.line_height
+                    minimum_width = (self._lines_rects[-1].texture.size[0] +
+                                     self.padding[0] + self.padding[2])
+                    max_scroll_x = max(0, minimum_width - self.width)
+                    if self.scroll_x < max_scroll_x:
+                        self.scroll_x = min(max_scroll_x, self.scroll_x +
+                                            self.line_height)
                         self._trigger_update_graphics()
             return True