Reintroduce damage tracking for iced_tiny_skia

tiny_skia/src/primitive.rs

@@ -1,3 +1,5 @@
+use crate::core::Rectangle;
+
 #[derive(Debug, Clone, PartialEq)]
 pub enum Primitive {
     /// A path filled with some paint.
@@ -19,3 +21,20 @@ pub enum Primitive {
         stroke: tiny_skia::Stroke,
     },
 }
+
+impl Primitive {
+    /// Returns the visible bounds of the [`Primitive`].
+    pub fn visible_bounds(&self) -> Rectangle {
+        let bounds = match self {
+            Primitive::Fill { path, .. } => path.bounds(),
+            Primitive::Stroke { path, .. } => path.bounds(),
+        };
+
+        Rectangle {
+            x: bounds.x(),
+            y: bounds.y(),
+            width: bounds.width(),
+            height: bounds.height(),
+        }
+    }
+}