Application of forget to the frame of gif.

crates/egui/src/context.rs

@@ -2969,18 +2969,28 @@ impl Context {
     pub fn forget_image(&self, uri: &str) {
         use load::BytesLoader as _;
 
+        if uri.is_empty() {
+            return;
+        }
+
         crate::profile_function!();
 
         let loaders = self.loaders();
 
         loaders.include.forget(uri);
-        for loader in loaders.bytes.lock().iter() {
+        for loader in loaders.texture.lock().iter() {
+            if is_gif_uri(uri) {
+                for frame_index in 0..128 {
+                    let frame_uri = self::encode_gif_uri(uri, frame_index);
+                    loader.forget(&frame_uri);
+                }
+            }
             loader.forget(uri);
         }
-        for loader in loaders.image.lock().iter() {
+        for loader in loaders.bytes.lock().iter() {
             loader.forget(uri);
         }
-        for loader in loaders.texture.lock().iter() {
+        for loader in loaders.image.lock().iter() {
             loader.forget(uri);
         }
     }

crates/egui/src/widgets/image.rs

@@ -796,7 +796,7 @@ pub fn paint_texture_at(
 }
 
 /// gif uris contain the uri & the frame that will be displayed
-fn encode_gif_uri(uri: &str, frame_index: usize) -> String {
+pub fn encode_gif_uri(uri: &str, frame_index: usize) -> String {
     format!("{uri}#{frame_index}")
 }
 
@@ -814,7 +814,7 @@ pub fn decode_gif_uri(uri: &str) -> Result<(&str, usize), String> {
 }
 
 /// checks if uri is a gif file
-fn is_gif_uri(uri: &str) -> bool {
+pub fn is_gif_uri(uri: &str) -> bool {
     uri.ends_with(".gif") || uri.contains(".gif#")
 }
 

crates/egui/src/widgets/mod.rs

@@ -28,8 +28,8 @@ pub use self::{
     drag_value::DragValue,
     hyperlink::{Hyperlink, Link},
     image::{
-        decode_gif_uri, has_gif_magic_header, paint_texture_at, GifFrameDurations, Image, ImageFit,
-        ImageOptions, ImageSize, ImageSource,
+        decode_gif_uri, encode_gif_uri, has_gif_magic_header, is_gif_uri, paint_texture_at,
+        GifFrameDurations, Image, ImageFit, ImageOptions, ImageSize, ImageSource,
     },
     image_button::ImageButton,
     label::Label,