175 lines
3.4 KiB
C++
175 lines
3.4 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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#include "ui/effects/animations.h"
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#include "core/application.h"
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namespace Ui {
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namespace Animations {
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namespace {
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constexpr auto kAnimationTick = crl::time(1000) / 120;
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constexpr auto kIgnoreUpdatesTimeout = crl::time(4);
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} // namespace
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void Basic::start() {
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if (animating()) {
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restart();
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} else {
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Core::App().animationManager().start(this);
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}
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}
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void Basic::stop() {
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if (animating()) {
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Core::App().animationManager().stop(this);
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}
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}
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void Basic::restart() {
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Expects(_started >= 0);
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_started = crl::now();
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Ensures(_started >= 0);
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}
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void Basic::markStarted() {
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Expects(_started < 0);
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_started = crl::now();
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Ensures(_started >= 0);
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}
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void Basic::markStopped() {
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Expects(_started >= 0);
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_started = -1;
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}
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Manager::Manager() {
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crl::on_main_update_requests(
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) | rpl::filter([=] {
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return (_lastUpdateTime + kIgnoreUpdatesTimeout < crl::now());
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}) | rpl::start_with_next([=] {
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update();
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}, _lifetime);
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}
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void Manager::start(not_null<Basic*> animation) {
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_forceImmediateUpdate = true;
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if (_updating) {
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_starting.emplace_back(animation.get());
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} else {
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schedule();
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_active.emplace_back(animation.get());
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}
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}
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void Manager::stop(not_null<Basic*> animation) {
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if (empty(_active) && empty(_starting)) {
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return;
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}
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const auto value = animation.get();
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const auto proj = &ActiveBasicPointer::get;
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auto &list = _updating ? _starting : _active;
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list.erase(ranges::remove(list, value, proj), end(list));
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if (_updating) {
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const auto i = ranges::find(_active, value, proj);
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if (i != end(_active)) {
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*i = nullptr;
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}
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} else if (empty(_active)) {
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stopTimer();
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}
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}
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void Manager::update() {
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if (_active.empty() || _updating || _scheduled) {
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return;
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}
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const auto now = crl::now();
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if (_forceImmediateUpdate) {
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_forceImmediateUpdate = false;
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}
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schedule();
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_updating = true;
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const auto guard = gsl::finally([&] { _updating = false; });
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_lastUpdateTime = now;
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const auto isFinished = [&](const ActiveBasicPointer &element) {
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return !element.call(now);
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};
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_active.erase(ranges::remove_if(_active, isFinished), end(_active));
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if (!empty(_starting)) {
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_active.insert(
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end(_active),
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std::make_move_iterator(begin(_starting)),
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std::make_move_iterator(end(_starting)));
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_starting.clear();
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}
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}
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void Manager::updateQueued() {
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Expects(_timerId == 0);
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_timerId = -1;
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InvokeQueued(delayedCallGuard(), [=] {
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Expects(_timerId < 0);
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_timerId = 0;
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update();
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});
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}
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void Manager::schedule() {
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if (_scheduled || _timerId < 0) {
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return;
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}
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stopTimer();
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_scheduled = true;
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Ui::PostponeCall(delayedCallGuard(), [=] {
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_scheduled = false;
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if (_forceImmediateUpdate) {
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_forceImmediateUpdate = false;
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updateQueued();
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} else {
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const auto next = _lastUpdateTime + kAnimationTick;
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const auto now = crl::now();
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if (now < next) {
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_timerId = startTimer(next - now, Qt::PreciseTimer);
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} else {
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updateQueued();
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}
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}
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});
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}
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not_null<const QObject*> Manager::delayedCallGuard() const {
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return static_cast<const QObject*>(this);
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}
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void Manager::stopTimer() {
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if (_timerId > 0) {
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killTimer(base::take(_timerId));
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}
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}
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void Manager::timerEvent(QTimerEvent *e) {
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update();
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}
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} // namespace Animations
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} // namespace Ui
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