blob: f9afcd2ddb6c67b672f2f799fdef469f75c281db [file] [log] [blame]
// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:lib.schemas.dart/com/fuchsia/media/media.dart';
import 'package:lib.widgets/model.dart';
/// Tracks progress of Media playback
class MediaProgress extends Model {
/// Constructor
MediaProgress(this._durationMsec, this._normalizedProgress);
/// Named constructor for converting an Entity into this model
MediaProgress.fromEntity(MediaProgressEntityData entity) {
_durationMsec = entity.durationMsec;
_normalizedProgress = entity.normalizedProgress;
/// Generate and Entity object capable of being sent over a Link
MediaProgressEntityData toEntity() =>
MediaProgressEntityData(_durationMsec, _normalizedProgress);
/// Progress through media in the range [0..1]
double _normalizedProgress;
/// Full length of the media
int _durationMsec;
/// Progress through media as an absolute Duration.
Duration get position => Duration(milliseconds: positionMsec);
/// Progress through media as absolute milliseconds.
int get positionMsec => (_durationMsec * _normalizedProgress).floor();
/// Progress of media playback normalized in the range [0.0 .. 1.0];
double get normalizedProgress => _normalizedProgress;
/// Duration fo the vide in milliseconds
int get durationMsec => _durationMsec;
/// Update the duration of the media.
set durationMsec(int durationMsec) {
_durationMsec = durationMsec;
/// Update the normalized progress of the media. This should be called
/// with the value from the media player and is clamped to the range
/// [0.0 .. 1.0].
set normalizedProgress(double normalizedProgress) {
_normalizedProgress = normalizedProgress;