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Telegram/SourceFiles/ui/chat/attach/attach_single_file_preview.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 "ui/chat/attach/attach_single_file_preview.h"
+
+#include "ui/chat/attach/attach_prepare.h"
+#include "ui/text/format_song_name.h"
+#include "ui/text/format_values.h"
+#include "ui/ui_utility.h"
+#include "core/mime_type.h"
+#include "styles/style_chat.h"
+
+#include <QtCore/QFileInfo>
+
+namespace Ui {
+
+SingleFilePreview::SingleFilePreview(
+	QWidget *parent,
+	const style::ComposeControls &st,
+	const PreparedFile &file,
+	AttachControls::Type type)
+: AbstractSingleFilePreview(parent, st, type) {
+	preparePreview(file);
+}
+
+void SingleFilePreview::preparePreview(const PreparedFile &file) {
+	AbstractSingleFilePreview::Data data;
+
+	auto preview = QImage();
+	if (const auto image = std::get_if<PreparedFileInformation::Image>(
+		&file.information->media)) {
+		preview = image->data;
+	} else if (const auto video = std::get_if<PreparedFileInformation::Video>(
+		&file.information->media)) {
+		preview = video->thumbnail;
+	}
+	prepareThumbFor(data, preview);
+	const auto filepath = file.path;
+	if (filepath.isEmpty()) {
+		auto filename = "image.png";
+		data.name = filename;
+		data.statusText = FormatImageSizeText(file.originalDimensions);
+		data.fileIsImage = true;
+	} else {
+		auto fileinfo = QFileInfo(filepath);
+		auto filename = fileinfo.fileName();
+		data.fileIsImage = Core::FileIsImage(
+			filename,
+			Core::MimeTypeForFile(fileinfo).name());
+
+		auto songTitle = QString();
+		auto songPerformer = QString();
+		if (file.information) {
+			if (const auto song = std::get_if<PreparedFileInformation::Song>(
+					&file.information->media)) {
+				songTitle = song->title;
+				songPerformer = song->performer;
+				data.fileIsAudio = true;
+
+				if (auto cover = song->cover; !cover.isNull()) {
+					data.fileThumb = Ui::PrepareSongCoverForThumbnail(
+						cover,
+						st::attachPreviewLayout.thumbSize);
+				}
+			}
+		}
+
+		data.name = Text::FormatSongName(filename, songTitle, songPerformer)
+			.string();
+		data.statusText = FormatSizeText(fileinfo.size());
+	}
+
+	setData(data);
+}
+
+} // namespace Ui