diff options
Diffstat (limited to 'core/src/renderer.rs')
| -rw-r--r-- | core/src/renderer.rs | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/core/src/renderer.rs b/core/src/renderer.rs index 1b327e56..7c73d2e4 100644 --- a/core/src/renderer.rs +++ b/core/src/renderer.rs @@ -5,13 +5,26 @@ mod null; #[cfg(debug_assertions)] pub use null::Null; -use crate::{Background, BorderRadius, Color, Rectangle, Vector}; +use crate::layout; +use crate::{Background, BorderRadius, Color, Element, Rectangle, Vector}; /// A component that can be used by widgets to draw themselves on a screen. pub trait Renderer: Sized { /// The supported theme of the [`Renderer`]. type Theme; + /// Lays out the elements of a user interface. + /// + /// You should override this if you need to perform any operations before or + /// after layouting. For instance, trimming the measurements cache. + fn layout<Message>( + &mut self, + element: &Element<'_, Message, Self>, + limits: &layout::Limits, + ) -> layout::Node { + element.as_widget().layout(self, limits) + } + /// Draws the primitives recorded in the given closure in a new layer. /// /// The layer will clip its contents to the provided `bounds`. |