stub out dynamic images

MediaBrowser.Server.Implementations/MediaBrowser.Server.Implementations.csproj

@@ -248,6 +248,7 @@
     <Compile Include="Persistence\TypeMapper.cs" />
     <Compile Include="Photos\BaseDynamicImageProvider.cs" />
     <Compile Include="Photos\DynamicImageHelpers.cs" />
+    <Compile Include="Photos\StripCollageBuilder.cs" />
     <Compile Include="Playlists\ManualPlaylistsFolder.cs" />
     <Compile Include="Photos\PhotoAlbumImageProvider.cs" />
     <Compile Include="Playlists\PlaylistImageProvider.cs" />
@@ -428,6 +429,7 @@
     <EmbeddedResource Include="Localization\Server\uk.json" />
     <EmbeddedResource Include="Drawing\fonts\webdings.ttf" />
     <EmbeddedResource Include="Drawing\fonts\robotoregular.ttf" />
+    <EmbeddedResource Include="Drawing\fonts\MontserratLight.otf" />
     <None Include="Localization\JavaScript\sl_SI.json" />
     <EmbeddedResource Include="Localization\Server\sl_SI.json" />
     <None Include="packages.config" />

MediaBrowser.Server.Implementations/Photos/DynamicImageHelpers.cs

@@ -107,7 +107,7 @@ namespace MediaBrowser.Server.Implementations.Photos
             return Task.FromResult<Stream>(fileSystem.GetFileStream(files[0], FileMode.Open, FileAccess.Read, FileShare.Read));
         }
 
-        private static Stream GetStream(MagickWand image, IApplicationPaths appPaths)
+        internal static Stream GetStream(MagickWand image, IApplicationPaths appPaths)
         {
             var tempFile = Path.Combine(appPaths.TempDirectory, Guid.NewGuid().ToString("N") + ".png");
 

MediaBrowser.Server.Implementations/Photos/DynamicImageProvider.cs

@@ -9,6 +9,7 @@ using MediaBrowser.Model.Entities;
 using MoreLinq;
 using System;
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using System.Threading.Tasks;
 
@@ -194,5 +195,24 @@ namespace MediaBrowser.Server.Implementations.Photos
         {
             return _collectionStripViewTypes.Contains(view.ViewType ?? string.Empty);
         }
+
+        protected override Task<Stream> CreateImageAsync(IHasImages item, List<BaseItem> itemsWithImages, ImageType imageType, int imageIndex)
+        {
+            var view = (UserView)item;
+            if (imageType == ImageType.Primary && IsUsingCollectionStrip(view))
+            {
+                var stream = new StripCollageBuilder(ApplicationPaths).BuildThumbCollage(GetStripCollageImagePaths(itemsWithImages), item.Name, 960, 540);
+                return Task.FromResult(stream);
+            }
+
+            return base.CreateImageAsync(item, itemsWithImages, imageType, imageIndex);
+        }
+
+        private IEnumerable<String> GetStripCollageImagePaths(IEnumerable<BaseItem> items)
+        {
+            return items
+                .Select(i => i.GetImagePath(ImageType.Primary) ?? i.GetImagePath(ImageType.Thumb))
+                .Where(i => !string.IsNullOrWhiteSpace(i));
+        }
     }
 }

MediaBrowser.Server.Implementations/Photos/StripCollageBuilder.cs

@@ -0,0 +1,114 @@
+using ImageMagickSharp;
+using MediaBrowser.Common.Configuration;
+using MediaBrowser.Server.Implementations.Drawing;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+
+namespace MediaBrowser.Server.Implementations.Photos
+{
+    public class StripCollageBuilder
+    {
+        private readonly IApplicationPaths _appPaths;
+
+        public StripCollageBuilder(IApplicationPaths appPaths)
+        {
+            _appPaths = appPaths;
+        }
+
+        public Stream BuildThumbCollage(IEnumerable<string> paths, string text, int width, int height)
+        {
+            using (var wand = BuildThumbCollageWand(paths, text, width, height))
+            {
+                return DynamicImageHelpers.GetStream(wand, _appPaths);
+            }
+        }
+
+        private IEnumerable<string> ProjectPaths(IEnumerable<string> paths, int count)
+        {
+            var clone = paths.ToList();
+            var list = new List<string>();
+
+            while (list.Count < count)
+            {
+                list.AddRange(clone);
+            }
+
+            return list.Take(count);
+        }
+
+        private MagickWand BuildThumbCollageWand(IEnumerable<string> paths, string text, int width, int height)
+        {
+            using (var wandImages = new MagickWand(ProjectPaths(paths, 8).ToArray()))
+            {
+                var wand = new MagickWand(width, height);
+                wand.OpenImage("gradient:#111111-#252525");
+                using (var draw = new DrawingWand())
+                {
+                    using (var fcolor = new PixelWand(ColorName.White))
+                    {
+                        draw.FillColor = fcolor;
+                        draw.Font = MontserratLightFont;
+                        draw.FontSize = 50;
+                        draw.FontWeight = FontWeightType.LightStyle;
+                        draw.TextAntialias = true;
+                    }
+
+                    var fontMetrics = wand.QueryFontMetrics(draw, text);
+                    var textContainerY = Convert.ToInt32(height * .165);
+                    wand.CurrentImage.AnnotateImage(draw, (width - fontMetrics.TextWidth) / 2, textContainerY, 0.0, text);
+
+                    var iSlice = Convert.ToInt32(width * .1166666667);
+                    int iTrans = Convert.ToInt32(height * 0.2);
+                    int iHeight = Convert.ToInt32(height * 0.46296296296296296296296296296296);
+                    var horizontalImagePadding = Convert.ToInt32(width * 0.0125);
+
+                    foreach (var element in wandImages.ImageList)
+                    {
+                        int iWidth = (int)Math.Abs(iHeight * element.Width / element.Height);
+                        element.Gravity = GravityType.CenterGravity;
+                        element.BackgroundColor = new PixelWand("none", 1);
+                        element.ResizeImage(iWidth, iHeight, FilterTypes.LanczosFilter);
+                        int ix = (int)Math.Abs((iWidth - iSlice) / 2);
+                        element.CropImage(iSlice, iHeight, ix, 0);
+
+                        element.ExtentImage(iSlice, iHeight, 0 - horizontalImagePadding, 0);
+                    }
+
+                    wandImages.SetFirstIterator();
+                    using (var wandList = wandImages.AppendImages())
+                    {
+                        wandList.CurrentImage.TrimImage(1);
+                        using (var mwr = wandList.CloneMagickWand())
+                        {
+                            mwr.CurrentImage.ResizeImage(wandList.CurrentImage.Width, (wandList.CurrentImage.Height / 2), FilterTypes.LanczosFilter, 1);
+                            mwr.CurrentImage.FlipImage();
+
+                            mwr.CurrentImage.AlphaChannel = AlphaChannelType.DeactivateAlphaChannel;
+                            mwr.CurrentImage.ColorizeImage(ColorName.Black, ColorName.Grey56);
+
+                            using (var mwg = new MagickWand(wandList.CurrentImage.Width, iTrans))
+                            {
+                                mwg.OpenImage("gradient:black-none");
+                                var verticalSpacing = Convert.ToInt32(height * 0.00555555555555555555555555555556);
+                                mwr.CurrentImage.CompositeImage(mwg, CompositeOperator.DstInCompositeOp, 0, verticalSpacing);
+
+                                wandList.AddImage(mwr);
+                                int ex = (int)(wand.CurrentImage.Width - mwg.CurrentImage.Width) / 2;
+                                wand.CurrentImage.CompositeImage(wandList.AppendImages(true), CompositeOperator.AtopCompositeOp, ex, Convert.ToInt32(height * 0.26851851851851851851851851851852));
+                            }
+                        }
+                    }
+                }
+
+                return wand;
+            }
+        }
+
+        private string MontserratLightFont
+        {
+            get { return PlayedIndicatorDrawer.ExtractFont("MontserratLight.otf", _appPaths); }
+        }
+    }
+}