return response for hover events on grid

egui_extras/src/grid.rs

@@ -3,7 +3,7 @@ use crate::{
     sizing::Sizing,
     Size,
 };
-use egui::Ui;
+use egui::{Response, Ui};
 
 /// The direction in which cells are positioned in the grid.
 ///
@@ -44,7 +44,9 @@ impl<'a> GridBuilder<'a> {
 
     /// Build horizontal grid: Cells are positions from left to right.
     /// Takes the available horizontal width, so there can't be anything right of the grid or the container will grow slowly!
-    pub fn horizontal<F>(self, grid: F)
+    ///
+    /// Returns a `[egui::Response]` for hover events.
+    pub fn horizontal<F>(self, grid: F) -> Response
     where
         F: for<'b> FnOnce(Grid<'a, 'b>),
     {
@@ -58,11 +60,14 @@ impl<'a> GridBuilder<'a> {
             direction: GridDirection::Horizontal,
             sizes: widths,
         });
+        layout.set_rect()
     }
 
     /// Build vertical grid: Cells are positions from top to bottom.
     /// Takes the full available vertical height, so there can't be anything below of the grid or the container will grow slowly!
-    pub fn vertical<F>(self, grid: F)
+    ///
+    /// Returns a `[egui::Response]` for hover events.
+    pub fn vertical<F>(self, grid: F) -> Response
     where
         F: for<'b> FnOnce(Grid<'a, 'b>),
     {
@@ -76,6 +81,7 @@ impl<'a> GridBuilder<'a> {
             direction: GridDirection::Vertical,
             sizes: heights,
         });
+        layout.set_rect()
     }
 }
 

egui_extras/src/layout.rs

@@ -141,15 +141,6 @@ impl<'l> Layout<'l> {
         }
     }
 
-    /// Set the rect so that the scrollview knows about our size
-    fn set_rect(&mut self) {
-        let mut rect = self.rect;
-        rect.set_right(self.max.x);
-        rect.set_bottom(self.max.y);
-
-        self.ui.allocate_rect(rect, Sense::hover());
-    }
-
     fn cell(&mut self, rect: Rect, clip: bool, add_contents: impl FnOnce(&mut Ui)) {
         let mut child_ui = self.ui.child_ui(rect, *self.ui.layout());
 
@@ -162,10 +153,13 @@ impl<'l> Layout<'l> {
 
         add_contents(&mut child_ui);
     }
-}
 
-impl<'a> Drop for Layout<'a> {
+    /// Set the rect so that the scrollview knows about our size
-    fn drop(&mut self) {
+    pub fn set_rect(&mut self) -> Response {
-        self.set_rect();
+        let mut rect = self.rect;
+        rect.set_right(self.max.x);
+        rect.set_bottom(self.max.y);
+
+        self.ui.allocate_rect(rect, Sense::hover())
     }
 }

egui_extras/src/table.rs

@@ -81,6 +81,7 @@ impl<'a> TableBuilder<'a> {
                 };
                 header(row);
             }
+            layout.set_rect();
         }
 
         Table {
@@ -221,6 +222,12 @@ impl<'a> TableBody<'a> {
     }
 }
 
+impl<'a> Drop for TableBody<'a> {
+    fn drop(&mut self) {
+        self.layout.set_rect();
+    }
+}
+
 pub struct TableRow<'a, 'b> {
     layout: &'b mut Layout<'a>,
     widths: Vec<f32>,