lib_ui/ui/dragging_scroll_manager.h

35 lines
707 B
C++

/*
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
namespace base {
class Timer;
} // namespace base
namespace Ui {
class DraggingScrollManager final {
public:
DraggingScrollManager();
void checkDeltaScroll(int delta);
void checkDeltaScroll(const QPoint &point, int top, int bottom);
void cancel();
[[nodiscard]] rpl::producer<int> scrolls() const;
private:
void scrollByTimer();
std::unique_ptr<base::Timer> _timer;
int _delta = 0;
rpl::event_stream<int> _scrolls;
};
} // namespace Ui