71 lines
1.5 KiB
C++
71 lines
1.5 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 "ui/effects/animations.h"
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#include <QSvgRenderer>
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namespace Ui {
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namespace Premium {
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class MiniStars final {
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public:
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MiniStars(Fn<void(const QRect &r)> updateCallback, bool opaque = false);
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void paint(Painter &p, const QRectF &rect);
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void setPaused(bool paused);
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static constexpr auto kSizeFactor = 1.5;
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private:
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struct MiniStar {
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crl::time birthTime = 0;
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crl::time deathTime = 0;
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int angle = 0;
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float64 size = 0.;
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float64 alpha = 0.;
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float64 sinFactor = 0.;
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};
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struct Interval {
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int from = 0;
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int length = 0;
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};
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void createStar(crl::time now);
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[[nodiscard]] int angle() const;
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[[nodiscard]] crl::time timeNow() const;
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[[nodiscard]] int randomInterval(const Interval &interval) const;
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const std::vector<Interval> _availableAngles;
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const Interval _lifeLength;
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const Interval _deathTime;
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const Interval _size;
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const Interval _alpha;
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const Interval _sinFactor;
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const float64 _appearProgressTill;
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const float64 _disappearProgressAfter;
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const float64 _distanceProgressStart;
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QSvgRenderer _sprite;
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Ui::Animations::Basic _animation;
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std::vector<MiniStar> _ministars;
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crl::time _nextBirthTime = 0;
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bool _paused = false;
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QRect _rectToUpdate;
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};
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} // namespace Premium
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} // namespace Ui
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