Pushing missing changes

MediaBrowser.UI/ViewModels/ChapterInfoDtoViewModel.cs

@@ -0,0 +1,182 @@
+using MediaBrowser.Model.DTO;
+using MediaBrowser.Model.Entities;
+using MediaBrowser.Model.Net;
+using System;
+using System.Linq;
+using System.Windows.Media.Imaging;
+
+namespace MediaBrowser.UI.ViewModels
+{
+    /// <summary>
+    /// Class ChapterInfoDtoViewModel
+    /// </summary>
+    public class ChapterInfoDtoViewModel : BaseViewModel
+    {
+        /// <summary>
+        /// Gets or sets the image download options.
+        /// </summary>
+        /// <value>The image download options.</value>
+        public ImageOptions ImageDownloadOptions { get; set; }
+
+        /// <summary>
+        /// The _image width
+        /// </summary>
+        private double _imageWidth;
+        /// <summary>
+        /// Gets or sets the width of the image.
+        /// </summary>
+        /// <value>The width of the image.</value>
+        public double ImageWidth
+        {
+            get { return _imageWidth; }
+
+            set
+            {
+                _imageWidth = value;
+                OnPropertyChanged("ImageWidth");
+            }
+        }
+
+        /// <summary>
+        /// The _image height
+        /// </summary>
+        private double _imageHeight;
+        /// <summary>
+        /// Gets or sets the height of the image.
+        /// </summary>
+        /// <value>The height of the image.</value>
+        public double ImageHeight
+        {
+            get { return _imageHeight; }
+
+            set
+            {
+                _imageHeight = value;
+                OnPropertyChanged("ImageHeight");
+            }
+        }
+
+        /// <summary>
+        /// The _item
+        /// </summary>
+        private ChapterInfoDto _chapter;
+        /// <summary>
+        /// Gets or sets the item.
+        /// </summary>
+        /// <value>The item.</value>
+        public ChapterInfoDto Chapter
+        {
+            get { return _chapter; }
+
+            set
+            {
+                _chapter = value;
+                OnPropertyChanged("Chapter");
+                OnPropertyChanged("TimeString");
+                OnChapterChanged();
+            }
+        }
+
+        /// <summary>
+        /// The _item
+        /// </summary>
+        private DtoBaseItem _item;
+        /// <summary>
+        /// Gets or sets the item.
+        /// </summary>
+        /// <value>The item.</value>
+        public DtoBaseItem Item
+        {
+            get { return _item; }
+
+            set
+            {
+                _item = value;
+                OnPropertyChanged("Item");
+            }
+        }
+
+        /// <summary>
+        /// Gets the time string.
+        /// </summary>
+        /// <value>The time string.</value>
+        public string TimeString
+        {
+            get
+            {
+                var time = TimeSpan.FromTicks(Chapter.StartPositionTicks);
+
+                return time.ToString(time.TotalHours < 1 ? "m':'ss" : "h':'mm':'ss");
+            }
+        }
+
+        /// <summary>
+        /// The _image
+        /// </summary>
+        private BitmapImage _image;
+        /// <summary>
+        /// Gets the image.
+        /// </summary>
+        /// <value>The image.</value>
+        public BitmapImage Image
+        {
+            get { return _image; }
+            set
+            {
+                _image = value;
+                OnPropertyChanged("Image");
+            }
+        }
+
+        /// <summary>
+        /// Called when [item changed].
+        /// </summary>
+        private async void OnChapterChanged()
+        {
+            var options = ImageDownloadOptions ?? new ImageOptions { };
+
+            options.ImageType = ImageType.ChapterImage;
+            options.ImageIndex = Item.Chapters.IndexOf(Chapter);
+
+            try
+            {
+                Image = await App.Instance.GetRemoteBitmapAsync(App.Instance.ApiClient.GetImageUrl(Item, options));
+            }
+            catch (HttpException)
+            {
+            }
+        }
+
+        /// <summary>
+        /// Gets the height of the chapter image.
+        /// </summary>
+        /// <param name="item">The item.</param>
+        /// <param name="height">The height.</param>
+        /// <param name="defaultWidth">The default width.</param>
+        /// <returns>System.Double.</returns>
+        public static double GetChapterImageWidth(DtoBaseItem item, double height, double defaultWidth)
+        {
+            var width = defaultWidth;
+
+            if (item.MediaStreams != null)
+            {
+                var videoStream = item.MediaStreams.FirstOrDefault(s => s.Type == MediaStreamType.Video);
+
+                if (videoStream != null)
+                {
+                    double streamHeight = videoStream.Height ?? 0;
+                    double streamWidth = videoStream.Width ?? 0;
+
+                    if (streamHeight > 0 && streamWidth > 0)
+                    {
+                        var aspectRatio = streamWidth / streamHeight;
+
+                        width = height * aspectRatio;
+                    }
+                }
+            }
+
+            return width;
+        }
+    }
+}