From 7880f879a330620d573bf04b7e1abe6207e51ede Mon Sep 17 00:00:00 2001
From: Vlad Zahorodnii <vlad.zahorodnii@kde.org>
Date: Fri, 17 May 2024 12:52:22 +0300
Subject: [PATCH] plugins/nightlight: Make the slow transition more robust to
 fuzzy time values

If the slow transition is scheduled slightly earlier before m_next.first,
don't skip the "m_prev.first <= todayNow && todayNow <= m_prev.second" branch.

Also explicitly handle the case when resetSlowUpdateTimers() gets called
after m_prev.second, i.e. the previous transition has finished running.
---
 src/plugins/nightlight/nightlightmanager.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/plugins/nightlight/nightlightmanager.cpp b/src/plugins/nightlight/nightlightmanager.cpp
index 62988725e4..df2344c090 100644
--- a/src/plugins/nightlight/nightlightmanager.cpp
+++ b/src/plugins/nightlight/nightlightmanager.cpp
@@ -399,7 +399,7 @@ void NightLightManager::resetSlowUpdateTimers(const QDateTime &todayNow)
         return;
     }
 
-    if (m_prev.first <= todayNow && todayNow <= m_prev.second) {
+    if (todayNow < m_prev.second) {
         int availTime = todayNow.msecsTo(m_prev.second);
         m_slowUpdateTimer = std::make_unique<QTimer>();
         m_slowUpdateTimer->setSingleShot(false);
@@ -419,6 +419,8 @@ void NightLightManager::resetSlowUpdateTimers(const QDateTime &todayNow)
             interval = 1;
         }
         m_slowUpdateTimer->start(interval);
+    } else {
+        commitGammaRamps(targetTemp);
     }
 }