From d14e32f63e12b72b07ec3010f8377435ed802869 Mon Sep 17 00:00:00 2001
From: 23rd <23rd@vivaldi.net>
Date: Mon, 21 Aug 2023 16:50:49 +0300
Subject: [PATCH] Guarded input for both directions in vertical drum picker.

---
 .../SourceFiles/ui/widgets/vertical_drum_picker.cpp   | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/Telegram/SourceFiles/ui/widgets/vertical_drum_picker.cpp b/Telegram/SourceFiles/ui/widgets/vertical_drum_picker.cpp
index 649c5129b..87950995a 100644
--- a/Telegram/SourceFiles/ui/widgets/vertical_drum_picker.cpp
+++ b/Telegram/SourceFiles/ui/widgets/vertical_drum_picker.cpp
@@ -101,9 +101,14 @@ VerticalDrumPicker::VerticalDrumPicker(
 }
 
 void VerticalDrumPicker::increaseShift(float64 by) {
-	// Guard input.
-	if (by >= 1.) {
-		by = .99;
+	{
+		// Guard input.
+		constexpr auto kAlmostIndex = .99;
+		if (by >= 1.) {
+			by = kAlmostIndex;
+		} else if (by <= -1.) {
+			by = -kAlmostIndex;
+		}
 	}
 
 	auto shift = _shift;