From 9d86ae8d06b3844de500c687335f694040bd9899 Mon Sep 17 00:00:00 2001
From: Bill Foote <billf@jovial.com>
Date: Thu, 18 Jul 2024 07:11:37 -0700
Subject: [PATCH] Add sample usage to cache documentation.

---
 lib/src/widget.dart | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/lib/src/widget.dart b/lib/src/widget.dart
index f045219..b545d0e 100644
--- a/lib/src/widget.dart
+++ b/lib/src/widget.dart
@@ -1154,6 +1154,25 @@ class _CacheEntry {
 /// private members.  See also the `demo_hive` application to see how
 /// [ScalableImageSource] can be extended to load from a persistent cache.
 ///
+/// Sample usage (see `example/lib/cache.dart` for the full program):
+///
+/// ```
+/// class _HomePageState extends State<HomePage> {
+///  ScalableImageCache _svgCache = ScalableImageCache(size: 70);
+///  ...
+///  @override
+///  Widget build(BuildContext context) {
+///    return ...
+///              ScalableImageWidget.fromSISource(
+///                  cache: _svgCache,
+///                  scale: 1000,
+///                  si: ScalableImageSource.fromSvgHttpUrl(widget.svgs[index]),
+///                  ...),
+///     ...;
+///   }
+/// }
+/// ```
+///
 /// {@category Widget}
 ///
 class ScalableImageCache {