Remove trait-specific draw logic in iced_native

graphics/src/widget/image/viewer.rs

@@ -1,55 +1,2 @@
 //! Zoom and pan on an image.
-use crate::backend::{self, Backend};
-use crate::{Primitive, Renderer};
-
-use iced_native::image;
-use iced_native::image::viewer;
-use iced_native::mouse;
-use iced_native::{Rectangle, Size, Vector};
-
-impl<B> viewer::Renderer for Renderer<B>
-where
-    B: Backend + backend::Image,
-{
-    fn draw(
-        &mut self,
-        state: &viewer::State,
-        bounds: Rectangle,
-        image_size: Size,
-        translation: Vector,
-        handle: image::Handle,
-        is_mouse_over: bool,
-    ) -> Self::Output {
-        (
-            {
-                Primitive::Clip {
-                    bounds,
-                    content: Box::new(Primitive::Translate {
-                        translation,
-                        content: Box::new(Primitive::Image {
-                            handle,
-                            bounds: Rectangle {
-                                x: bounds.x,
-                                y: bounds.y,
-                                ..Rectangle::with_size(image_size)
-                            },
-                        }),
-                    }),
-                    offset: Vector::new(0, 0),
-                }
-            },
-            {
-                if state.is_cursor_grabbed() {
-                    mouse::Interaction::Grabbing
-                } else if is_mouse_over
-                    && (image_size.width > bounds.width
-                        || image_size.height > bounds.height)
-                {
-                    mouse::Interaction::Grab
-                } else {
-                    mouse::Interaction::Idle
-                }
-            },
-        )
-    }
-}
+pub use iced_native::image::Viewer;