Moved generic document preview info to separated file.

Telegram/SourceFiles/layout/layout_document_generic_preview.cpp

@@ -0,0 +1,122 @@
+/*
+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 "layout/layout_document_generic_preview.h"
+
+#include "data/data_document.h"
+#include "lang/lang_keys.h"
+#include "styles/style_media_view.h"
+
+namespace Layout {
+
+const style::icon *DocumentGenericPreview::icon() const {
+	switch (index) {
+	case 0: return &st::mediaviewFileBlue;
+	case 1: return &st::mediaviewFileGreen;
+	case 2: return &st::mediaviewFileRed;
+	case 3: return &st::mediaviewFileYellow;
+	}
+	Unexpected("Color index in DocumentGenericPreview::icon.");
+}
+
+DocumentGenericPreview DocumentGenericPreview::Create(
+		DocumentData *document) {
+	auto colorIndex = 0;
+
+	const auto name = (document
+		? (document->filename().isEmpty()
+			? (document->sticker()
+				? tr::lng_in_dlg_sticker(tr::now)
+				: qsl("Unknown File"))
+			: document->filename())
+		: tr::lng_message_empty(tr::now)).toLower();
+	auto lastDot = name.lastIndexOf('.');
+	const auto mime = document
+		? document->mimeString().toLower()
+		: QString();
+	if (name.endsWith(qstr(".doc")) ||
+		name.endsWith(qstr(".docx")) ||
+		name.endsWith(qstr(".txt")) ||
+		name.endsWith(qstr(".psd")) ||
+		mime.startsWith(qstr("text/"))) {
+		colorIndex = 0;
+	} else if (
+		name.endsWith(qstr(".xls")) ||
+		name.endsWith(qstr(".xlsx")) ||
+		name.endsWith(qstr(".csv"))) {
+		colorIndex = 1;
+	} else if (
+		name.endsWith(qstr(".pdf")) ||
+		name.endsWith(qstr(".ppt")) ||
+		name.endsWith(qstr(".pptx")) ||
+		name.endsWith(qstr(".key"))) {
+		colorIndex = 2;
+	} else if (
+		name.endsWith(qstr(".zip")) ||
+		name.endsWith(qstr(".rar")) ||
+		name.endsWith(qstr(".ai")) ||
+		name.endsWith(qstr(".mp3")) ||
+		name.endsWith(qstr(".mov")) ||
+		name.endsWith(qstr(".avi"))) {
+		colorIndex = 3;
+	} else {
+		auto ch = (lastDot >= 0 && lastDot + 1 < name.size())
+			? name.at(lastDot + 1)
+			: (name.isEmpty()
+				? (mime.isEmpty() ? '0' : mime.at(0))
+				: name.at(0));
+		colorIndex = (ch.unicode() % 4) & 3;
+	}
+
+	const auto ext = document
+		? ((lastDot < 0 || lastDot + 2 > name.size())
+			? name
+			: name.mid(lastDot + 1))
+		: QString();
+
+	switch (colorIndex) {
+	case 0: return {
+		.index = colorIndex,
+		.color = st::msgFile1Bg,
+		.dark = st::msgFile1BgDark,
+		.over = st::msgFile1BgOver,
+		.selected = st::msgFile1BgSelected,
+		.ext = ext,
+	};
+	case 1: return {
+		.index = colorIndex,
+		.color = st::msgFile2Bg,
+		.dark = st::msgFile2BgDark,
+		.over = st::msgFile2BgOver,
+		.selected = st::msgFile2BgSelected,
+		.ext = ext,
+	};
+	case 2: return {
+		.index = colorIndex,
+		.color = st::msgFile3Bg,
+		.dark = st::msgFile3BgDark,
+		.over = st::msgFile3BgOver,
+		.selected = st::msgFile3BgSelected,
+		.ext = ext,
+	};
+	case 3: return {
+		.index = colorIndex,
+		.color = st::msgFile4Bg,
+		.dark = st::msgFile4BgDark,
+		.over = st::msgFile4BgOver,
+		.selected = st::msgFile4BgSelected,
+		.ext = ext,
+	};
+	}
+	Unexpected("Color index in CreateDocumentGenericPreview.");
+}
+
+// Ui::CachedRoundCorners DocumentCorners(int32 colorIndex) {
+// 	return Ui::CachedRoundCorners(Ui::Doc1Corners + (colorIndex & 3));
+// }
+
+} // namespace Layout

Telegram/SourceFiles/layout/layout_document_generic_preview.h

@@ -0,0 +1,25 @@
+/*
+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
+
+namespace Layout {
+
+struct DocumentGenericPreview final {
+	static DocumentGenericPreview Create(DocumentData *document);
+	const style::icon *icon() const;
+	const int index;
+	const style::color &color;
+	const style::color &dark;
+	const style::color &over;
+	const style::color &selected;
+	const QString ext;
+};
+
+// Ui::CachedRoundCorners DocumentCorners(int colorIndex);
+
+} // namespace Layout