Remove trait-specific draw logic in iced_native

native/src/widget/image/viewer.rs

@@ -88,7 +88,7 @@ impl<'a> Viewer<'a> {
     /// will be respected.
     fn image_size<Renderer>(&self, renderer: &Renderer, bounds: Size) -> Size
     where
-        Renderer: self::Renderer + image::Renderer,
+        Renderer: image::Renderer,
     {
         let (width, height) = renderer.dimensions(&self.handle);
 
@@ -115,7 +115,7 @@ impl<'a> Viewer<'a> {
 
 impl<'a, Message, Renderer> Widget<Message, Renderer> for Viewer<'a>
 where
-    Renderer: self::Renderer + image::Renderer,
+    Renderer: image::Renderer,
 {
     fn width(&self) -> Length {
         self.width
@@ -287,7 +287,7 @@ where
         layout: Layout<'_>,
         cursor_position: Point,
         _viewport: &Rectangle,
-    ) -> Renderer::Output {
+    ) {
         let bounds = layout.bounds();
 
         let image_size = self.image_size(renderer, bounds.size());
@@ -302,16 +302,6 @@ where
         };
 
         let is_mouse_over = bounds.contains(cursor_position);
-
-        self::Renderer::draw(
-            renderer,
-            &self.state,
-            bounds,
-            image_size,
-            translation,
-            self.handle.clone(),
-            is_mouse_over,
-        )
     }
 
     fn hash_layout(&self, state: &mut Hasher) {
@@ -373,38 +363,9 @@ impl State {
     }
 }
 
-/// The renderer of an [`Viewer`].
-///
-/// Your [renderer] will need to implement this trait before being
-/// able to use a [`Viewer`] in your user interface.
-///
-/// [renderer]: crate::renderer
-pub trait Renderer: crate::Renderer + Sized {
-    /// Draws the [`Viewer`].
-    ///
-    /// It receives:
-    /// - the [`State`] of the [`Viewer`]
-    /// - the bounds of the [`Viewer`] widget
-    /// - the [`Size`] of the scaled [`Viewer`] image
-    /// - the translation of the clipped image
-    /// - the [`Handle`] to the underlying image
-    /// - whether the mouse is over the [`Viewer`] or not
-    ///
-    /// [`Handle`]: image::Handle
-    fn draw(
-        &mut self,
-        state: &State,
-        bounds: Rectangle,
-        image_size: Size,
-        translation: Vector,
-        handle: image::Handle,
-        is_mouse_over: bool,
-    ) -> Self::Output;
-}
-
 impl<'a, Message, Renderer> From<Viewer<'a>> for Element<'a, Message, Renderer>
 where
-    Renderer: 'a + self::Renderer + image::Renderer,
+    Renderer: 'a + image::Renderer,
     Message: 'a,
 {
     fn from(viewer: Viewer<'a>) -> Element<'a, Message, Renderer> {