Moved out media group layout geometry to separate module.

Telegram/SourceFiles/ui/grouped_layout_geometry.cpp

@@ -0,0 +1,28 @@
+/*
+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 "ui/grouped_layout_geometry.h"
+
+#include "ui/grouped_layout.h"
+
+namespace Ui {
+
+std::vector<QRect> LayoutMediaGroupGeometry(
+		const std::vector<QSize> &sizes,
+		int maxWidth,
+		int minWidth,
+		int spacing) {
+	const auto layout = LayoutMediaGroup(sizes, maxWidth, minWidth, spacing);
+	auto result = std::vector<QRect>();
+	result.reserve(layout.size());
+	for (const auto &part : layout) {
+		result.push_back(part.geometry);
+	}
+	return result;
+}
+
+} // namespace Ui

Telegram/SourceFiles/ui/grouped_layout_geometry.h

@@ -0,0 +1,22 @@
+/*
+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
+*/
+#pragma once
+
+#include <QtCore/QRect>
+
+namespace Ui {
+
+// LayoutMediaGroup without the per-item sides, so that targets which do
+// not link lib_ui, like td_export, can use the same album geometry.
+[[nodiscard]] std::vector<QRect> LayoutMediaGroupGeometry(
+	const std::vector<QSize> &sizes,
+	int maxWidth,
+	int minWidth,
+	int spacing);
+
+} // namespace Ui

Telegram/cmake/td_ui.cmake

@@ -636,6 +636,8 @@ PRIVATE
     ui/empty_userpic.h
     ui/grouped_layout.cpp
     ui/grouped_layout.h
+    ui/grouped_layout_geometry.cpp
+    ui/grouped_layout_geometry.h
     ui/new_badges.cpp
     ui/new_badges.h
     ui/peer/color_sample.cpp