tdesktop/Telegram/SourceFiles/window/window_media_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 "media/clip/media_clip_reader.h"
#include "ui/effects/animations.h"
#include "data/data_file_origin.h"
#include "ui/rp_widget.h"
namespace Data {
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class PhotoMedia;
class DocumentMedia;
} // namespace Data
namespace Lottie {
class SinglePlayer;
} // namespace Lottie
namespace Window {
class SessionController;
class MediaPreviewWidget final : public Ui::RpWidget {
public:
MediaPreviewWidget(
QWidget *parent,
not_null<Window::SessionController*> controller);
void showPreview(
Data::FileOrigin origin,
not_null<DocumentData*> document);
void showPreview(
Data::FileOrigin origin,
not_null<PhotoData*> photo);
void hidePreview();
~MediaPreviewWidget();
protected:
void paintEvent(QPaintEvent *e) override;
void resizeEvent(QResizeEvent *e) override;
private:
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void validateGifAnimation();
void startGifAnimation(const Media::Clip::ReaderPointer &gif);
QSize currentDimensions() const;
QPixmap currentImage() const;
void setupLottie();
void startShow();
void fillEmojiString();
void resetGifAndCache();
[[nodiscard]] QRect updateArea() const;
not_null<Window::SessionController*> _controller;
Ui::Animations::Simple _a_shown;
bool _hiding = false;
Data::FileOrigin _origin;
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PhotoData *_photo = nullptr;
DocumentData *_document = nullptr;
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std::shared_ptr<Data::PhotoMedia> _photoMedia;
std::shared_ptr<Data::DocumentMedia> _documentMedia;
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Media::Clip::ReaderPointer _gif, _gifThumbnail;
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bool _gifWithAlpha = false;
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crl::time _gifLastPosition = 0;
std::unique_ptr<Lottie::SinglePlayer> _lottie;
int _emojiSize;
std::vector<not_null<EmojiPtr>> _emojiList;
void clipCallback(Media::Clip::Notification notification);
enum CacheStatus {
CacheNotLoaded,
CacheThumbLoaded,
CacheLoaded,
};
mutable CacheStatus _cacheStatus = CacheNotLoaded;
mutable QPixmap _cache;
mutable QSize _cachedSize;
};
} // namespace Window