Expand description
ImageView — paints an Option<(rgba8_top_down, w, h)> as an image.
Reads its pixel data from an Rc<RefCell<Option<(Vec<u8>, u32, u32)>>>
— the same shape ScreenshotHandle::image
produces. Fits the image into the widget’s bounds preserving aspect
ratio, then outlines it in the theme text colour so the image boundary
is always visible against the neutral pane.
Shows a themed “No image yet.” placeholder while the source is None.