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Telegram/SourceFiles/data/data_media_rotation.cpp

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+/*
+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 "data/data_media_rotation.h"
+
+namespace Data {
+namespace {
+
+[[nodiscard]] int NormalizeRotation(int rotation) {
+	const auto result = rotation
+		- ((rotation / 360) - ((rotation < 0) ? 1 : 0)) * 360;
+
+	Ensures(result >= 0 && result < 360);
+	return result;
+}
+
+} // namespace
+
+void MediaRotation::set(not_null<PhotoData*> photo, int rotation) {
+	if (rotation % 360) {
+		_photoRotations[photo] = NormalizeRotation(rotation);
+	} else {
+		_photoRotations.remove(photo);
+	}
+}
+
+int MediaRotation::get(not_null<PhotoData*> photo) const {
+	const auto i = _photoRotations.find(photo);
+	return (i != end(_photoRotations)) ? i->second : 0;
+}
+
+void MediaRotation::set(not_null<DocumentData*> document, int rotation) {
+	if (rotation % 360) {
+		_documentRotations[document] = NormalizeRotation(rotation);
+	} else {
+		_documentRotations.remove(document);
+	}
+}
+
+int MediaRotation::get(not_null<DocumentData*> document) const {
+	const auto i = _documentRotations.find(document);
+	return (i != end(_documentRotations)) ? i->second : 0;
+}
+
+} // namespace Data