From 74dc4e0c620572e6aaf8497f252d987d31652d10 Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Tue, 2 Apr 2019 13:21:14 +0400
Subject: [PATCH] Allow disabling new animations.

---
 .../SourceFiles/ui/effects/animations.cpp     | 25 +++++++++++--------
 Telegram/SourceFiles/ui/effects/animations.h  |  5 +++-
 2 files changed, 19 insertions(+), 11 deletions(-)

diff --git a/Telegram/SourceFiles/ui/effects/animations.cpp b/Telegram/SourceFiles/ui/effects/animations.cpp
index ecc9e4c9c..d16340821 100644
--- a/Telegram/SourceFiles/ui/effects/animations.cpp
+++ b/Telegram/SourceFiles/ui/effects/animations.cpp
@@ -59,12 +59,11 @@ Manager::Manager() {
 }
 
 void Manager::start(not_null<Basic*> animation) {
+	_forceImmediateUpdate = true;
 	if (_updating) {
 		_starting.emplace_back(animation.get());
 	} else {
-		if (empty(_active)) {
-			updateQueued();
-		}
+		schedule();
 		_active.emplace_back(animation.get());
 	}
 }
@@ -93,9 +92,11 @@ void Manager::update() {
 		return;
 	}
 	const auto now = crl::now();
-	if (_lastUpdateTime + kIgnoreUpdatesTimeout >= now) {
+	if (!_forceImmediateUpdate
+		&& (_lastUpdateTime + kIgnoreUpdatesTimeout >= now)) {
 		return;
 	}
+	_forceImmediateUpdate = false;
 	schedule();
 
 	_updating = true;
@@ -129,13 +130,17 @@ void Manager::schedule() {
 	_scheduled = true;
 	Ui::PostponeCall([=] {
 		_scheduled = false;
-
-		const auto next = _lastUpdateTime + kAnimationTimeout;
-		const auto now = crl::now();
-		if (now < next) {
-			_timerId = startTimer(next - now, Qt::PreciseTimer);
-		} else {
+		if (_forceImmediateUpdate) {
+			_forceImmediateUpdate = false;
 			updateQueued();
+		} else {
+			const auto next = _lastUpdateTime + kAnimationTimeout;
+			const auto now = crl::now();
+			if (now < next) {
+				_timerId = startTimer(next - now, Qt::PreciseTimer);
+			} else {
+				updateQueued();
+			}
 		}
 	});
 }
diff --git a/Telegram/SourceFiles/ui/effects/animations.h b/Telegram/SourceFiles/ui/effects/animations.h
index 5fdcb0bb9..2ca6562e8 100644
--- a/Telegram/SourceFiles/ui/effects/animations.h
+++ b/Telegram/SourceFiles/ui/effects/animations.h
@@ -161,6 +161,7 @@ private:
 	int _timerId = 0;
 	bool _updating = false;
 	bool _scheduled = false;
+	bool _forceImmediateUpdate = false;
 	std::vector<ActiveBasicPointer> _active;
 	std::vector<ActiveBasicPointer> _starting;
 	rpl::lifetime _lifetime;
@@ -274,7 +275,9 @@ inline void Simple::start(
 		that = _data.get(),
 		callback = Prepare(std::forward<Callback>(callback))
 	](crl::time now) {
-		const auto time = (now - that->animation.started());
+		const auto time = anim::Disabled()
+			? that->duration
+			: (now - that->animation.started());
 		const auto finished = (time >= that->duration);
 		const auto progress = finished
 			? that->delta