tdesktop/Telegram/SourceFiles/media/view/media_view_group_thumbs.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 "history/history_item_components.h"
#include "base/weak_ptr.h"
class SharedMediaWithLastSlice;
class UserPhotosSlice;
namespace Media {
namespace View {
class GroupThumbs : public base::has_weak_ptr {
public:
using Key = base::variant<PhotoId, FullMsgId>;
static void Refresh(
std::unique_ptr<GroupThumbs> &instance,
const SharedMediaWithLastSlice &slice,
int index,
int availableWidth);
static void Refresh(
std::unique_ptr<GroupThumbs> &instance,
const UserPhotosSlice &slice,
int index,
int availableWidth);
void clear();
void resizeToWidth(int newWidth);
int height() const;
bool hiding() const;
bool hidden() const;
void checkForAnimationStart();
void paint(Painter &p, int x, int y, int outerWidth, TimeMs ms);
ClickHandlerPtr getState(QPoint point) const;
rpl::producer<QRect> updateRequests() const {
return _updateRequests.events();
}
rpl::producer<Key> activateRequests() const {
return _activateStream.events();
}
rpl::lifetime &lifetime() {
return _lifetime;
}
using Context = base::optional_variant<PeerId, MessageGroupId>;
GroupThumbs(Context context);
~GroupThumbs();
private:
class Thumb;
template <typename Slice>
static void RefreshFromSlice(
std::unique_ptr<GroupThumbs> &instance,
const Slice &slice,
int index,
int availableWidth);
template <typename Slice>
void fillItems(const Slice &slice, int from, int index, int till);
void updateContext(Context context);
void markCacheStale();
not_null<Thumb*> validateCacheEntry(Key key);
std::unique_ptr<Thumb> createThumb(Key key);
std::unique_ptr<Thumb> createThumb(Key key, ImagePtr image);
void update();
void countUpdatedRect();
void animateAliveItems(int current);
void fillDyingItems(const std::vector<not_null<Thumb*>> &old);
void markAsDying(not_null<Thumb*> thumb);
void markRestAsDying();
void animatePreviouslyAlive(const std::vector<not_null<Thumb*>> &old);
void startDelayedAnimation();
Context _context;
bool _waitingForAnimationStart = true;
Animation _animation;
std::vector<not_null<Thumb*>> _items;
std::vector<not_null<Thumb*>> _dying;
base::flat_map<Key, std::unique_ptr<Thumb>> _cache;
int _width = 0;
QRect _updatedRect;
rpl::event_stream<QRect> _updateRequests;
rpl::event_stream<Key> _activateStream;
rpl::lifetime _lifetime;
};
} // namespace View
} // namespace Media