Scale animated emoji by server config.

Telegram/SourceFiles/main/main_app_config.cpp

@@ -0,0 +1,63 @@
+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "main/main_app_config.h"
+
+#include "main/main_session.h"
+#include "apiwrap.h"
+
+namespace Main {
+namespace {
+
+constexpr auto kRefreshTimeout = TimeId(3600);
+
+} // namespace
+
+AppConfig::AppConfig(not_null<Session*> session) : _session(session) {
+	refresh();
+}
+
+void AppConfig::refresh() {
+	if (_requestId) {
+		return;
+	}
+	_requestId = _session->api().request(MTPhelp_GetAppConfig(
+	)).done([=](const MTPJSONValue &result) {
+		_requestId = 0;
+		refreshDelayed();
+		if (result.type() == mtpc_jsonObject) {
+			for (const auto &element : result.c_jsonObject().vvalue().v) {
+				element.match([&](const MTPDjsonObjectValue &data) {
+					_data.emplace_or_assign(qs(data.vkey()), data.vvalue());
+				});
+			}
+		}
+	}).fail([=](const RPCError &error) {
+		_requestId = 0;
+		refreshDelayed();
+	}).send();
+}
+
+void AppConfig::refreshDelayed() {
+	App::CallDelayed(kRefreshTimeout, _session, [=] {
+		refresh();
+	});
+}
+
+double AppConfig::getDouble(const QString &key, double fallback) const {
+	const auto i = _data.find(key);
+	if (i == end(_data)) {
+		return fallback;
+	}
+	return i->second.match([&](const MTPDjsonNumber &data) {
+		return data.vvalue().v;
+	}, [&](const auto &data) {
+		return fallback;
+	});
+}
+
+} // namespace Main