111 lines
2.7 KiB
C++
111 lines
2.7 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 "media/view/media_view_playback_progress.h"
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#include "media/audio/media_audio.h"
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#include "styles/style_mediaview.h"
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namespace Media {
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namespace View {
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namespace {
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constexpr auto kPlaybackAnimationDurationMs = crl::time(200);
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} // namespace
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PlaybackProgress::PlaybackProgress() : _a_value(animation(this, &PlaybackProgress::step_value)) {
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}
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void PlaybackProgress::updateState(const Player::TrackState &state) {
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qint64 position = 0, length = state.length;
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auto wasInLoadingState = _inLoadingState;
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if (wasInLoadingState) {
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_inLoadingState = false;
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if (_inLoadingStateChanged) {
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_inLoadingStateChanged(false);
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}
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}
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_playing = !Player::IsStopped(state.state);
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if (Player::IsStoppedAtEnd(state.state)) {
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position = state.length;
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} else if (!Player::IsStoppedOrStopping(state.state)) {
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position = state.position;
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} else {
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position = 0;
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}
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auto progress = 0.;
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if (position > length) {
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progress = 1.;
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} else if (length) {
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progress = snap(float64(position) / length, 0., 1.);
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}
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auto animatedPosition = position + (state.frequency * kPlaybackAnimationDurationMs / 1000);
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auto animatedProgress = length ? qMax(float64(animatedPosition) / length, 0.) : 0.;
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if (length != _length || position != _position || wasInLoadingState) {
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if (auto animated = (length && _length && animatedProgress > value())) {
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setValue(animatedProgress, animated);
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} else {
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setValue(progress, animated);
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}
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_position = position;
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_length = length;
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}
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}
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void PlaybackProgress::updateLoadingState(float64 progress) {
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if (!_inLoadingState) {
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_inLoadingState = true;
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if (_inLoadingStateChanged) {
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_inLoadingStateChanged(true);
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}
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}
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auto animated = (progress > value());
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setValue(progress, animated);
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}
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float64 PlaybackProgress::value() const {
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return qMin(a_value.current(), 1.);
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}
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float64 PlaybackProgress::value(crl::time ms) {
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_a_value.step(ms);
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return value();
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}
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void PlaybackProgress::setValue(float64 value, bool animated) {
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if (animated) {
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a_value.start(value);
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_a_value.start();
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} else {
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a_value = anim::value(value, value);
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_a_value.stop();
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}
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if (_valueChanged) {
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_valueChanged(a_value.current());
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}
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}
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void PlaybackProgress::step_value(float64 ms, bool timer) {
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auto dt = anim::Disabled() ? 1. : (ms / kPlaybackAnimationDurationMs);
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if (dt >= 1.) {
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_a_value.stop();
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a_value.finish();
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} else {
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a_value.update(dt, anim::linear);
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}
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if (timer && _valueChanged) {
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_valueChanged(a_value.current());
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}
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}
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} // namespace View
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} // namespace Media
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