Introduce Image URL Generator abstraction

2020-02-07 15:01:03 -08:00
parent 02a9645ed1
commit a7ff20de6e
22 changed files with 747 additions and 269 deletions
--- a/src/Umbraco.Web/Models/ImageProcessorImageUrlGenerator.cs
+++ b/src/Umbraco.Web/Models/ImageProcessorImageUrlGenerator.cs
@@ -0,0 +1,108 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Umbraco.Core;
+using Umbraco.Core.Models;
+
+namespace Umbraco.Web.Models
+{
+    internal class ImageProcessorImageUrlGenerator : IImageUrlGenerator
+    {
+        public string GetImageUrl(ImageUrlGenerationOptions options)
+        {
+            var imageProcessorUrl = new StringBuilder(options.ImageUrl ?? string.Empty);
+
+            if (options.FocalPoint != null)
+            {
+                imageProcessorUrl.Append("?center=");
+                imageProcessorUrl.Append(options.FocalPoint.Top.ToString(CultureInfo.InvariantCulture));
+                imageProcessorUrl.Append(",");
+                imageProcessorUrl.Append(options.FocalPoint.Left.ToString(CultureInfo.InvariantCulture));
+                imageProcessorUrl.Append("&mode=crop");
+            }
+            else if (options.Crop != null)
+            {
+                imageProcessorUrl.Append("?crop=");
+                imageProcessorUrl.Append(options.Crop.X1.ToString(CultureInfo.InvariantCulture)).Append(",");
+                imageProcessorUrl.Append(options.Crop.Y1.ToString(CultureInfo.InvariantCulture)).Append(",");
+                imageProcessorUrl.Append(options.Crop.X2.ToString(CultureInfo.InvariantCulture)).Append(",");
+                imageProcessorUrl.Append(options.Crop.Y2.ToString(CultureInfo.InvariantCulture));
+                imageProcessorUrl.Append("&cropmode=percentage");
+            }
+            else if (options.DefaultCrop)
+            {
+                imageProcessorUrl.Append("?anchor=center");
+                imageProcessorUrl.Append("&mode=crop");
+            }
+            else
+            {
+                imageProcessorUrl.Append("?mode=" + options.ImageCropMode.ToString().ToLower());
+
+                if (options.ImageCropAnchor != null)
+                {
+                    imageProcessorUrl.Append("&anchor=" + options.ImageCropAnchor.ToString().ToLower());
+                }
+            }
+
+            var hasFormat = options.FurtherOptions != null && options.FurtherOptions.InvariantContains("&format=");
+
+            //Only put quality here, if we don't have a format specified.
+            //Otherwise we need to put quality at the end to avoid it being overridden by the format.
+            if (options.Quality != null && hasFormat == false)
+            {
+                imageProcessorUrl.Append("&quality=" + options.Quality);
+            }
+
+            if (options.HeightRatio != null)
+            {
+                imageProcessorUrl.Append("&heightratio=" + options.HeightRatio.Value.ToString(CultureInfo.InvariantCulture));
+            }
+
+            if (options.WidthRatio != null)
+            {
+                imageProcessorUrl.Append("&widthratio=" + options.WidthRatio.Value.ToString(CultureInfo.InvariantCulture));
+            }
+
+            if (options.Width != null)
+            {
+                imageProcessorUrl.Append("&width=" + options.Width);
+            }
+
+            if (options.Height != null)
+            {
+                imageProcessorUrl.Append("&height=" + options.Height);
+            }
+
+            if (options.UpScale == false)
+            {
+                imageProcessorUrl.Append("&upscale=false");
+            }
+
+            if (options.AnimationProcessMode != null)
+            {
+                imageProcessorUrl.Append("&animationprocessmode=" + options.AnimationProcessMode);
+            }
+
+            if (options.FurtherOptions != null)
+            {
+                imageProcessorUrl.Append(options.FurtherOptions);
+            }
+
+            //If furtherOptions contains a format, we need to put the quality after the format.
+            if (options.Quality != null && hasFormat)
+            {
+                imageProcessorUrl.Append("&quality=" + options.Quality);
+            }
+
+            if (options.CacheBusterValue != null)
+            {
+                imageProcessorUrl.Append("&rnd=").Append(options.CacheBusterValue);
+            }
+
+            return imageProcessorUrl.ToString();
+        }
+    }
+}