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https://github.com/AyuGram/AyuGramDesktop.git
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23rd
54 lines
1.0 KiB
C++
54 lines
1.0 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#pragma once
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#include "base/timer.h"
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class QCursor;
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namespace Ui {
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class MiddleClickAutoscroll final {
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public:
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explicit MiddleClickAutoscroll(
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Fn<void(int)> scrollBy,
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Fn<void(const QCursor &)> applyCursor = nullptr,
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Fn<void()> restoreCursor = nullptr,
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Fn<bool()> shouldContinue = nullptr);
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[[nodiscard]] bool active() const {
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return _active;
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}
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void start(const QPoint &globalPosition);
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void stop();
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private:
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enum class CursorMode {
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Neutral,
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Up,
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Down,
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};
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void updateCursor(int delta);
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void onTimer();
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[[nodiscard]] static QCursor makeCursor(CursorMode mode);
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Fn<void(int)> _scrollBy;
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Fn<void(const QCursor &)> _applyCursor;
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Fn<void()> _restoreCursor;
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Fn<bool()> _shouldContinue;
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bool _active = false;
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QPoint _startPosition;
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crl::time _time = 0;
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base::Timer _timer;
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};
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} // namespace Ui
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