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Telegram/SourceFiles/window/themes/window_theme_preview.h

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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
+*/
+#pragma once
+
+#include "window/themes/window_theme.h"
+
+namespace Data {
+struct CloudTheme;
+} // namespace Data
+
+namespace Window {
+namespace Theme {
+
+struct CurrentData {
+	WallPaperId backgroundId = 0;
+	QImage backgroundImage;
+	bool backgroundTiled = false;
+};
+
+enum class PreviewType {
+	Normal,
+	Extended,
+};
+
+[[nodiscard]] QString CachedThemePath(uint64 documentId);
+
+std::unique_ptr<Preview> PreviewFromFile(
+	const QByteArray &bytes,
+	const QString &filepath,
+	const Data::CloudTheme &cloud);
+std::unique_ptr<Preview> GeneratePreview(
+	const QByteArray &bytes,
+	const QString &filepath,
+	const Data::CloudTheme &cloud,
+	CurrentData &&data,
+	PreviewType type);
+QImage GeneratePreview(
+	const QByteArray &bytes,
+	const QString &filepath);
+
+int DefaultPreviewTitleHeight();
+void DefaultPreviewWindowFramePaint(
+	QImage &preview,
+	const style::palette &palette,
+	QRect body,
+	int outerWidth);
+
+} // namespace Theme
+} // namespace Window