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Telegram/lib_ui/ui/text/custom_emoji_helper.h

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+// This file is part of Desktop App Toolkit,
+// a set of libraries for developing nice desktop applications.
+//
+// For license and copyright information please follow this link:
+// https://github.com/desktop-app/legal/blob/master/LEGAL
+//
+#pragma once
+
+#include "ui/text/text.h"
+
+namespace Ui::Text {
+
+struct ImageEmoji {
+	QImage image;
+	QMargins margin;
+	bool textColor = true;
+};
+
+struct PaletteDependentEmoji {
+	Fn<QImage()> factory;
+	QMargins margin;
+};
+
+class CustomEmojiHelper final {
+public:
+	CustomEmojiHelper();
+	CustomEmojiHelper(MarkedContext parent);
+
+	[[nodiscard]] QString imageData(ImageEmoji emoji);
+	[[nodiscard]] TextWithEntities image(ImageEmoji emoji);
+
+	[[nodiscard]] QString paletteDependentData(PaletteDependentEmoji emoji);
+	[[nodiscard]] TextWithEntities paletteDependent(
+		PaletteDependentEmoji emoji);
+
+	[[nodiscard]] MarkedContext context(Fn<void()> repaint = nullptr);
+
+private:
+	struct Data {
+		QString prefix;
+		std::vector<QImage> images;
+		std::vector<Fn<QImage()>> paletteDependent;
+	};
+
+	[[nodiscard]] not_null<Data*> ensureData();
+
+	MarkedContext _parent;
+	std::shared_ptr<Data> _data;
+
+};
+
+} // namespace Ui::Text