Support GIFs

CHDataManagement/Page Elements/ContentElements/Images/PartialSvgImage.swift

@@ -0,0 +1,28 @@
+
+struct PartialSvgImage: HtmlProducer {
+
+    let imagePath: String
+
+    let altText: String
+
+    let x: Int
+
+    let y: Int
+
+    let width: Int
+
+    let height: Int
+
+    private var aspectRatio: Double {
+        guard height > 1 else {
+            return 1
+        }
+        return Double(width) / Double(height)
+    }
+
+    func populate(_ result: inout String) {
+        result += "<span class='content-image svg-image'>"
+        result += "<img src='\(imagePath)#svgView(viewBox(\(x), \(y), \(width), \(height)))' loading='lazy' style='aspect-ratio:\(aspectRatio)' alt='\(altText)'/>"
+        result += "</span>"
+    }
+}