ec621df5f6
Updated Fody Renamed Dto objects
185 lines
6.2 KiB
C#
185 lines
6.2 KiB
C#
using MediaBrowser.Common.Logging;
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using MediaBrowser.Model.Dto;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.UI.Pages;
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using System;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.Linq;
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namespace MediaBrowser.UI.ViewModels
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{
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/// <summary>
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/// Class DtoBaseItemViewModel
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/// </summary>
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public class DtoBaseItemViewModel : BaseViewModel
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{
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/// <summary>
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/// The _average primary image aspect ratio
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/// </summary>
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private double _averagePrimaryImageAspectRatio;
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/// <summary>
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/// Gets the aspect ratio that should be used if displaying the primary image
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/// </summary>
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/// <value>The average primary image aspect ratio.</value>
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public double AveragePrimaryImageAspectRatio
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{
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get { return _averagePrimaryImageAspectRatio; }
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set
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{
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_averagePrimaryImageAspectRatio = value;
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OnPropertyChanged("AveragePrimaryImageAspectRatio");
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}
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}
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/// <summary>
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/// The _parent display preferences
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/// </summary>
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private DisplayPreferences _parentDisplayPreferences;
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/// <summary>
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/// Gets of sets the current DisplayPreferences
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/// </summary>
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/// <value>The parent display preferences.</value>
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public DisplayPreferences ParentDisplayPreferences
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{
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get { return _parentDisplayPreferences; }
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set
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{
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_parentDisplayPreferences = value;
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NotifyDisplayPreferencesChanged();
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}
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}
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/// <summary>
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/// The _item
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/// </summary>
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private BaseItemDto _item;
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/// <summary>
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/// Gets or sets the item.
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/// </summary>
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/// <value>The item.</value>
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public BaseItemDto Item
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{
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get { return _item; }
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set
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{
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_item = value;
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OnPropertyChanged("Item");
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}
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}
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/// <summary>
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/// Notifies the display preferences changed.
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/// </summary>
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public void NotifyDisplayPreferencesChanged()
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{
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OnPropertyChanged("DisplayPreferences");
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}
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/// <summary>
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/// Gets an image url that can be used to download an image from the api
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/// </summary>
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/// <param name="imageType">The type of image requested</param>
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/// <param name="imageIndex">The image index, if there are multiple. Currently only applies to backdrops. Supply null or 0 for first backdrop.</param>
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/// <returns>System.String.</returns>
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public string GetImageUrl(ImageType imageType, int? imageIndex = null)
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{
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var height = ParentDisplayPreferences.PrimaryImageHeight;
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var averageAspectRatio = BaseFolderPage.GetAspectRatio(imageType, AveragePrimaryImageAspectRatio);
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var width = height * averageAspectRatio;
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var imageOptions = new ImageOptions
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{
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ImageType = imageType,
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ImageIndex = imageIndex,
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Height = height
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};
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if (imageType == ImageType.Primary)
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{
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var currentAspectRatio = imageType == ImageType.Primary ? Item.PrimaryImageAspectRatio ?? width / height : width / height;
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// Preserve the exact AR if it deviates from the average significantly
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var preserveExactAspectRatio = Math.Abs(currentAspectRatio - averageAspectRatio) > .10;
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if (!preserveExactAspectRatio)
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{
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imageOptions.Width = Convert.ToInt32(width);
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}
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}
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return App.Instance.ApiClient.GetImageUrl(Item, imageOptions);
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}
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/// <summary>
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/// Gets the average primary image aspect ratio.
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/// </summary>
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/// <param name="items">The items.</param>
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/// <returns>System.Double.</returns>
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/// <exception cref="System.ArgumentNullException">items</exception>
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public static double GetAveragePrimaryImageAspectRatio(IEnumerable<BaseItemDto> items)
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{
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if (items == null)
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{
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throw new ArgumentNullException("items");
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}
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double total = 0;
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var count = 0;
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foreach (var child in items)
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{
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var ratio = child.PrimaryImageAspectRatio ?? 0;
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if (ratio.Equals(0))
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{
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continue;
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}
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total += ratio;
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count++;
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}
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return count == 0 ? 1 : total / count;
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}
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/// <summary>
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/// Gets the observable items.
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/// </summary>
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/// <param name="items">The items.</param>
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/// <returns>ObservableCollection{DtoBaseItemViewModel}.</returns>
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public static ObservableCollection<DtoBaseItemViewModel> GetObservableItems(BaseItemDto[] items)
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{
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return GetObservableItems(items, GetAveragePrimaryImageAspectRatio(items));
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}
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/// <summary>
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/// Gets the observable items.
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/// </summary>
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/// <param name="items">The items.</param>
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/// <param name="averagePrimaryImageAspectRatio">The average primary image aspect ratio.</param>
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/// <param name="parentDisplayPreferences">The parent display preferences.</param>
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/// <returns>ObservableCollection{DtoBaseItemViewModel}.</returns>
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/// <exception cref="System.ArgumentNullException">items</exception>
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public static ObservableCollection<DtoBaseItemViewModel> GetObservableItems(IEnumerable<BaseItemDto> items, double averagePrimaryImageAspectRatio, DisplayPreferences parentDisplayPreferences = null)
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{
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if (items == null)
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{
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throw new ArgumentNullException("items");
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}
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return new ObservableCollection<DtoBaseItemViewModel>(items.Select(i => new DtoBaseItemViewModel
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{
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Item = i,
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ParentDisplayPreferences = parentDisplayPreferences,
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AveragePrimaryImageAspectRatio = averagePrimaryImageAspectRatio
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}));
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}
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}
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}
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