App_win_iot_V2.0/IOTContainer/Common/ProgrammeControl.cs

using LibVLCSharp.Shared;
using LibVLCSharp.WPF;
using System;
using System.IO;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media.Animation;
using System.Windows.Media.Imaging;

namespace IOTContainer.Common
{
    public class ProgrammeControl : UserControl
    {
        private VideoView _videoView;
        private LibVLC _libVlc;
        private MediaPlayer _mediaPlayer;
        private Image _image;
        private BitmapImage _bitmapImage;
        private Grid _grid;
        private MemoryStream _stream;
        public ProgrammeControl()
        {
            try
            {
                Core.Initialize();
                _grid = new Grid();

                #region 视频
                _libVlc = new LibVLC();
                _mediaPlayer = new MediaPlayer(_libVlc);
                _videoView = new VideoView();
                _videoView.Loaded += (sender, e) => _videoView.MediaPlayer = _mediaPlayer;
                _grid.Children.Add(_videoView);
                #endregion

                #region 图片
                _image = new Image();
                _grid.Children.Add(_image);
                #endregion


                this.AddChild(_grid);
            }
            catch (Exception ex)
            {
                Log.MyLog.WriteLogFile("组件初始化出错" + ex.Message, "ProgrammeError");
            }
        }
        /// <summary>
        /// 清屏
        /// </summary>
        public void Flush()
        {
            try
            {
                this.Dispatcher.Invoke(() =>
                {
                    _grid.Children.Clear();
                    _grid = new Grid();
                    _libVlc = new LibVLC();
                    _mediaPlayer = new MediaPlayer(_libVlc);
                    _videoView = new VideoView();
                    _videoView.Loaded += (sender, e) => _videoView.MediaPlayer = _mediaPlayer;
                    _grid.Children.Add(_videoView);

                    _image = new Image();
                    _grid.Children.Add(_image);
                });
            }
            catch (Exception ex)
            {
                Log.MyLog.WriteLogFile("清屏出错" + ex.Message, "ProgrammeError");
            }
        }

        /// <summary>
        /// 封装动画方法
        /// </summary>
        /// <param name="uIElement">动画生效的界面元素</param>
        /// <param name="autoReverse">是否倒序</param>
        /// <param name="repeatBehavior">执行次数</param>
        /// <param name="propertyPath">动画生效的依赖属性</param>
        /// <param name="by"></param>
        /// <returns></returns>
        private Timeline CreateDoubleAnimation(UIElement uIElement, bool autoReverse, RepeatBehavior repeatBehavior, string propertyPath, double by)
        {
            DoubleAnimation doubleAnimation = new DoubleAnimation();
            try
            {
                //doubleAnimation.By = by;
                doubleAnimation.From = SystemParameters.WorkArea.Width;
                doubleAnimation.To = 0;
                doubleAnimation.Duration = TimeSpan.FromSeconds(10);
                doubleAnimation.RepeatBehavior = repeatBehavior;
                doubleAnimation.AutoReverse = autoReverse;
                Storyboard.SetTarget(doubleAnimation, uIElement);
                Storyboard.SetTargetProperty(doubleAnimation, new PropertyPath(propertyPath));
            }
            catch (Exception ex)
            {
                Log.MyLog.WriteLogFile("动画组件出错" + ex.Message, "ProgrammeError");
            }
            return doubleAnimation;
        }

        #region 媒体组件
        /// <summary>
        /// 播放视频
        /// </summary>
        /// <param name="filePath"></param>
        public void PlayVideo(string filePath)
        {
            try
            {
                //Log.MyLog.WriteLogFile($"播放视频：{filePath}", "Programme");
                if (!_videoView.MediaPlayer.IsPlaying)
                {
                    using (var media = new Media(_libVlc, new Uri(filePath)))
                    {
                        _videoView.MediaPlayer.Play(media);
                    }
                }
            }
            catch (Exception ex)
            {
                Log.MyLog.WriteLogFile("播放 视频 组件出错" + ex.Message, "ProgrammeError");
            }
        }
        /// <summary>
        /// 停止播放
        /// </summary>
        public void StopVideo()
        {
            try
            {
                _mediaPlayer.Stop();
            }
            catch (Exception ex)
            {
                Log.MyLog.WriteLogFile("停止 视频 组件出错" + ex.Message, "ProgrammeError");
            }
        }
        /// <summary>
        /// 播放gif
        /// </summary>
        /// <param name="filePath"></param>
        public void PlayGif(string filePath)
        {
            try
            {
                //Log.MyLog.WriteLogFile($"播放gif：{filePath}", "Programme");
                if (File.Exists(filePath))
                {
                    _stream = new MemoryStream(File.ReadAllBytes(filePath));
                    XamlAnimatedGif.AnimationBehavior.SetSourceStream(_image, _stream);
                    //XamlAnimatedGif.AnimationBehavior.SetSourceUri(_image, new Uri(filePath));
                    XamlAnimatedGif.AnimationBehavior.SetRepeatBehavior(_image, RepeatBehavior.Forever);
                    XamlAnimatedGif.AnimationBehavior.SetAutoStart(_image, true);
                }
            }
            catch (Exception ex)
            {
                Log.MyLog.WriteLogFile("播放 gif 组件出错" + ex.Message, "ProgrammeError");
            }
        }
        /// <summary>
        /// 播放图片
        /// </summary>
        /// <param name="filePath"></param>
        public void PlayPic(string filePath)
        {
            try
            {
                //Log.MyLog.WriteLogFile($"播放图片：{filePath}", "Programme");
                if (File.Exists(filePath))
                {
                    using (var stream = new MemoryStream(File.ReadAllBytes(filePath)))
                    {
                        _bitmapImage = new BitmapImage();
                        _bitmapImage.BeginInit();
                        _bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
                        _bitmapImage.StreamSource = stream;
                        _bitmapImage.EndInit();
                        _bitmapImage.Freeze();
                        _image.Source = _bitmapImage;
                    }
                }
            }
            catch (Exception ex)
            {
                Log.MyLog.WriteLogFile("播放 图片 组件出错" + ex.Message, "ProgrammeError");
            }
        }
        /// <summary>
        /// 停止图片
        /// </summary>
        public void StopPic()
        {
            try
            {
                _image.Source = null;
                if (_stream != null)
                {
                    _stream.Dispose();
                }
            }
            catch (Exception ex)
            {
                Log.MyLog.WriteLogFile("停止 图片 组件出错" + ex.Message, "ProgrammeError");
            }
        }
        ///// <summary>
        ///// 播放字幕
        ///// </summary>
        ///// <param name="item"></param>
        //public void PlaySubtitle(SubtitleModel item)
        //{
        //    _label.Content = item.newsText;
        //    _label.FontSize = item.fontSize;
        //    _label.Foreground = new System.Windows.Media.SolidColorBrush((System.Windows.Media.Color)System.Windows.Media.ColorConverter.ConvertFromString(item.fontColor));

        //    var storyboard = new Storyboard();
        //    storyboard.Children.Add(CreateDoubleAnimation(_label, false, RepeatBehavior.Forever, "(UIElement.RenderTransform).(TranslateTransform.X)", 1));
        //    storyboard.Begin();
        //}
        #endregion

    }
}