init

Telegram/lib_lottie/lottie/lottie_animation.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 "lottie/lottie_common.h"
+#include "base/weak_ptr.h"
+
+#include <QtGui/QImage>
+#include <variant>
+
+class QString;
+class QByteArray;
+
+namespace rlottie {
+class Animation;
+} // namespace rlottie
+
+namespace Lottie {
+
+class Player;
+class SharedState;
+class FrameRenderer;
+class FrameProvider;
+
+std::shared_ptr<FrameRenderer> MakeFrameRenderer();
+
+QImage ReadThumbnail(const QByteArray &content);
+
+namespace details {
+
+using InitData = std::variant<std::unique_ptr<SharedState>, Error>;
+
+} // namespace details
+
+class Animation final : public base::has_weak_ptr {
+public:
+	struct FrameInfo {
+		QImage image;
+		int index = 0;
+	};
+
+	Animation(
+		not_null<Player*> player,
+		const QByteArray &content,
+		const FrameRequest &request,
+		Quality quality,
+		const ColorReplacements *replacements = nullptr);
+	Animation(
+		not_null<Player*> player,
+		FnMut<void(FnMut<void(QByteArray &&cached)>)> get, // Main thread.
+		FnMut<void(QByteArray &&cached)> put, // Unknown thread.
+		const QByteArray &content,
+		const FrameRequest &request,
+		Quality quality,
+		const ColorReplacements *replacements = nullptr);
+	Animation( // Multi-cache version.
+		not_null<Player*> player,
+		int keysCount,
+		FnMut<void(int, FnMut<void(QByteArray &&)>)> get,
+		FnMut<void(int, QByteArray &&)> put, // Unknown thread.
+		const QByteArray &content,
+		const FrameRequest &request,
+		Quality quality,
+		const ColorReplacements *replacements = nullptr);
+	Animation( // Thread-safe version.
+		not_null<Player*> player,
+		std::shared_ptr<FrameProvider> provider,
+		const FrameRequest &request);
+
+	[[nodiscard]] bool ready() const;
+	[[nodiscard]] QImage frame() const;
+	[[nodiscard]] QImage frame(const FrameRequest &request) const;
+	[[nodiscard]] FrameInfo frameInfo(const FrameRequest &request) const;
+	[[nodiscard]] int frameIndex() const;
+	[[nodiscard]] int framesCount() const;
+	[[nodiscard]] Information information() const;
+
+private:
+	void initDone(details::InitData &&data);
+	void parseDone(std::unique_ptr<SharedState> state);
+	void parseFailed(Error error);
+
+	const not_null<Player*> _player;
+	SharedState *_state = nullptr;
+
+};
+
+[[nodiscard]] std::optional<Error> ContentError(const QByteArray &content);
+
+} // namespace Lottie