refactor(custom): split into enum with separate file per widget

src/modules/custom/image.rs

@@ -0,0 +1,43 @@
+use super::{CustomWidget, CustomWidgetContext};
+use crate::image::ImageProvider;
+use gtk::prelude::*;
+use gtk::Image;
+use serde::Deserialize;
+use tracing::error;
+
+#[derive(Debug, Deserialize, Clone)]
+pub struct ImageWidget {
+    name: Option<String>,
+    class: Option<String>,
+    src: Option<String>,
+    size: Option<i32>,
+}
+
+impl CustomWidget for ImageWidget {
+    type Widget = Image;
+
+    fn into_widget(self, context: CustomWidgetContext) -> Self::Widget {
+        let mut builder = Image::builder();
+
+        if let Some(name) = self.name {
+            builder = builder.name(&name);
+        }
+
+        let gtk_image = builder.build();
+
+        if let Some(src) = self.src {
+            let size = self.size.unwrap_or(32);
+            if let Err(err) = ImageProvider::parse(&src, context.icon_theme, size)
+                .and_then(|image| image.load_into_image(gtk_image.clone()))
+            {
+                error!("{err:?}");
+            }
+        }
+
+        if let Some(class) = self.class {
+            gtk_image.style_context().add_class(&class);
+        }
+
+        gtk_image
+    }
+}