Move UI out of storybook2 and into ui2

crates/ui2/src/elements/stack.rs

@@ -0,0 +1,31 @@
+use gpui3::{div, Div};
+
+use crate::prelude::*;
+
+pub trait Stack: StyleHelpers {
+    /// Horizontally stacks elements.
+    fn h_stack(self) -> Self {
+        self.flex().flex_row().items_center()
+    }
+
+    /// Vertically stacks elements.
+    fn v_stack(self) -> Self {
+        self.flex().flex_col()
+    }
+}
+
+impl<S> Stack for Div<S> {}
+
+/// Horizontally stacks elements.
+///
+/// Sets `flex()`, `flex_row()`, `items_center()`
+pub fn h_stack<S: 'static>() -> Div<S> {
+    div().h_stack()
+}
+
+/// Vertically stacks elements.
+///
+/// Sets `flex()`, `flex_col()`
+pub fn v_stack<S: 'static>() -> Div<S> {
+    div().v_stack()
+}