From 03f812787528c25fb09e52d3a2db2910aced5b0c Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Thu, 9 Mar 2023 09:43:13 +0400
Subject: [PATCH] Fix huge memory allocation on unused emoji.

Before that change call to Instance::setColored started emoji loading
and allocating memory for all animation frames even if it wasn't used.
---
 ui/text/custom_emoji_instance.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ui/text/custom_emoji_instance.cpp b/ui/text/custom_emoji_instance.cpp
index 96b8395..aa98a72 100644
--- a/ui/text/custom_emoji_instance.cpp
+++ b/ui/text/custom_emoji_instance.cpp
@@ -706,7 +706,9 @@ bool Instance::ready() {
 		if (state.hasImagePreview()) {
 			return true;
 		}
-		load(state);
+		if (!_usage.empty()) {
+			load(state);
+		}
 		return false;
 	}, [](Caching &state) {
 		return state.renderer->canMakePreview();