Implement basic effect animation.

Telegram/SourceFiles/data/data_message_reactions.cpp

@@ -19,6 +19,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_changes.h"
 #include "data/data_document.h"
 #include "data/data_document_media.h"
+#include "data/data_file_origin.h"
 #include "data/data_peer_values.h"
 #include "data/data_saved_sublist.h"
 #include "data/stickers/data_custom_emoji.h"
@@ -594,6 +595,9 @@ void Reactions::preloadImageFor(const ReactionId &id) {
 		} else {
 			generateImage(set, i->title);
 		}
+		if (set.effect) {
+			preloadEffect(*i);
+		}
 	} else if (set.effect && !_waitingForEffects) {
 		_waitingForEffects = true;
 		refreshEffects();
@@ -603,6 +607,15 @@ void Reactions::preloadImageFor(const ReactionId &id) {
 	}
 }
 
+void Reactions::preloadEffect(const Reaction &effect) {
+	if (effect.aroundAnimation) {
+		effect.aroundAnimation->createMediaView()->checkStickerLarge();
+	} else {
+		const auto premium = effect.selectAnimation;
+		premium->loadVideoThumbnail(premium->stickerSetOrigin());
+	}
+}
+
 void Reactions::preloadAnimationsFor(const ReactionId &id) {
 	const auto custom = id.custom();
 	const auto document = custom ? _owner->document(custom).get() : nullptr;

Telegram/SourceFiles/data/data_message_reactions.h

@@ -212,6 +212,7 @@ private:
 	[[nodiscard]] std::optional<Reaction> parse(
 		const MTPAvailableEffect &entry);
 
+	void preloadEffect(const Reaction &effect);
 	void preloadImageFor(const ReactionId &id);
 	[[nodiscard]] QImage resolveImageFor(const ReactionId &id);
 	void loadImage(

Telegram/SourceFiles/data/data_types.h

@@ -321,6 +321,8 @@ enum class MessageFlag : uint64 {
 	ReactionsAreTags      = (1ULL << 43),
 
 	ShortcutMessage       = (1ULL << 44),
+
+	EffectWatchedLocal    = (1ULL << 45),
 };
 inline constexpr bool is_flag_type(MessageFlag) { return true; }
 using MessageFlags = base::flags<MessageFlag>;