Add Lottie Files animation preview support

QuickLook.Plugin/QuickLook.Plugin.ImageViewer/Webview/WebHandler.cs

@@ -0,0 +1,123 @@
+// Copyright © 2017-2025 QL-Win Contributors
+//
+// This file is part of QuickLook program.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+using QuickLook.Common.Helpers;
+using QuickLook.Common.Plugin;
+using QuickLook.Plugin.ImageViewer.Webview.Lottie;
+using QuickLook.Plugin.ImageViewer.Webview.Svg;
+using QuickLook.Plugin.ImageViewer.Webview.Svga;
+using System;
+using System.IO;
+using System.Windows;
+
+namespace QuickLook.Plugin.ImageViewer.Webview;
+
+internal static class WebHandler
+{
+    public static bool TryCanHandle(string path)
+    {
+        if (path.EndsWith(".lottie.json", StringComparison.OrdinalIgnoreCase))
+            return true;
+
+        return Path.GetExtension(path).ToLower() switch
+        {
+            ".svg" => SettingHelper.Get("RenderSvgWeb", true, "QuickLook.Plugin.ImageViewer"),
+            ".svga" or ".lottie" => true,
+            ".json" => LottieDetector.IsVaild(path), // Check for Lottie files
+            _ => false,
+        };
+    }
+
+    public static bool TryPrepare(string path, ContextObject context, out IWebMetaProvider metaWeb)
+    {
+        string ext = Path.GetExtension(path).ToLower();
+
+        if (ext == ".svg" || ext == ".svga"
+         || ext == ".lottie" || ext == ".json")
+        {
+            if (ext == ".svg")
+            {
+                if (!SettingHelper.Get("RenderSvgWeb", true, "QuickLook.Plugin.ImageViewer"))
+                {
+                    metaWeb = null;
+                    return false;
+                }
+            }
+
+            metaWeb = ext switch
+            {
+                ".svg" => new SvgMetaProvider(path),
+                ".svga" => new SvgaMetaProvider(path),
+                ".lottie" or ".json" => new LottieMetaProvider(path),
+                _ => throw new NotSupportedException($"Unsupported file type: {ext}")
+            };
+            var sizeSvg = metaWeb.GetSize();
+
+            if (!sizeSvg.IsEmpty)
+                context.SetPreferredSizeFit(sizeSvg, 0.8d);
+            else
+                context.PreferredSize = new Size(800, 600);
+
+            context.Theme = (Themes)SettingHelper.Get("LastTheme", 1, "QuickLook.Plugin.ImageViewer");
+            return true;
+        }
+
+        metaWeb = null;
+        return false;
+    }
+
+    public static bool TryView(string path, ContextObject context, IWebMetaProvider metaWeb, out IWebImagePanel ipWeb)
+    {
+        string ext = Path.GetExtension(path).ToLower();
+
+        if (ext == ".svg" || ext == ".svga"
+         || ext == ".lottie" || ext == ".json")
+        {
+            if (ext == ".svg")
+            {
+                if (!SettingHelper.Get("RenderSvgWeb", true, "QuickLook.Plugin.ImageViewer"))
+                {
+                    ipWeb = null;
+                    return false;
+                }
+            }
+
+            ipWeb = ext switch
+            {
+                ".svg" => new SvgImagePanel(),
+                ".svga" => new SvgaImagePanel(),
+                ".lottie" or ".json" => new LottieImagePanel(),
+                _ => throw new NotSupportedException($"Unsupported file type: {ext}")
+            };
+
+            ipWeb.Preview(path);
+
+            var sizeSvg = metaWeb.GetSize();
+
+            context.ViewerContent = ipWeb;
+            context.Title = sizeSvg.IsEmpty
+                ? $"{Path.GetFileName(path)}"
+                : $"{sizeSvg.Width}×{sizeSvg.Height}: {Path.GetFileName(path)}";
+
+            context.IsBusy = false;
+            return true;
+        }
+
+        ipWeb = null;
+        return false;
+    }
+}