tdesktop/Telegram/SourceFiles/ui/chat/continuous_scroll.h

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2021-09-30 00:09:50 +00:00
/*
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 "ui/widgets/scroll_area.h"
#include "base/qt_connection.h"
namespace Ui {
// This class is designed for seamless scrolling of
// on-demand augmented content.
class ContinuousScroll final : public ScrollArea {
public:
using ScrollArea::ScrollArea;
[[nodiscard]] rpl::producer<> addContentRequests() const;
void contentAdded();
void setTrackingContent(bool value);
protected:
void wheelEvent(QWheelEvent *e) override;
private:
void reconnect();
base::qt_connection _connection;
bool _contentAdded = false;
bool _tracking = false;
rpl::event_stream<> _addContentRequests;
};
} // namespace Ui