S2 Card updates

packages/@react-spectrum/s2/src/Card.tsx

@@ -215,7 +215,7 @@ let selectionIndicator = style({
   },
   // Quiet cards with no checkbox have an extra inner stroke
   // to distinguish the selection indicator from the preview.
-  outlineColor: 'gray-25',
+  outlineColor: lightDark('transparent-white-600', 'transparent-black-600'),
   outlineOffset: -4,
   outlineStyle: {
     default: 'none',
@@ -331,6 +331,13 @@ let content = style({
   }
 });
 
+let actionMenu = style({
+  gridArea: 'menu',
+  // Don't cause the row to expand, preserve gap between title and description text.
+  // Would use -100% here but it doesn't work in Firefox.
+  marginY: '[calc(-1 * self(height))]'
+});
+
 let footer = style({
   display: 'flex',
   flexDirection: 'row',
@@ -397,7 +404,7 @@ export const Card = forwardRef(function Card(props: CardProps, ref: DOMRef<HTMLD
           isDisabled: isSkeleton,
           // @ts-ignore
           'data-slot': 'menu',
-          styles: style({gridArea: 'menu'})
+          styles: actionMenu
         }],
         [SkeletonContext, isSkeleton]
       ]}>

packages/@react-spectrum/s2/src/CardView.tsx

@@ -194,9 +194,20 @@ class FlexibleGridLayout<T extends object> extends Layout<Node<T>, GridLayoutOpt
   }
 }
 
+class WaterfallLayoutInfo extends LayoutInfo {
+  column = 0;
+
+  copy(): WaterfallLayoutInfo {
+    let res = super.copy() as WaterfallLayoutInfo;
+    res.column = this.column;
+    return res;
+  }
+}
+
 class WaterfallLayout<T extends object> extends Layout<Node<T>, GridLayoutOptions> implements LayoutDelegate {
   protected contentSize: Size = new Size();
-  protected layoutInfos: Map<Key, LayoutInfo> = new Map();
+  protected layoutInfos: Map<Key, WaterfallLayoutInfo> = new Map();
+  protected numColumns = 0;
 
   update(invalidationContext: InvalidationContext<GridLayoutOptions>): void {
     let {
@@ -246,15 +257,18 @@ class WaterfallLayout<T extends object> extends Layout<Node<T>, GridLayoutOption
       }
 
       // Figure out which column to place the item in, and compute its position.
-      let column = columnHeights.reduce((minIndex, h, i) => h < columnHeights[minIndex] ? i : minIndex, 0);
+      // Preserve the previous column index so items don't jump around during resizing unless the number of columns changed.
+      let prevColumn = numColumns === this.numColumns ? oldLayoutInfo?.column : undefined;
+      let column = prevColumn ?? columnHeights.reduce((minIndex, h, i) => h < columnHeights[minIndex] ? i : minIndex, 0);
       let x = horizontalSpacing + column * (itemWidth + horizontalSpacing);
       let y = columnHeights[column];
 
       let rect = new Rect(x, y, itemWidth, height);
-      let layoutInfo = new LayoutInfo(node.type, key, rect);
+      let layoutInfo = new WaterfallLayoutInfo(node.type, key, rect);
       layoutInfo.estimatedSize = estimatedSize;
       layoutInfo.allowOverflow = true;
       layoutInfo.content = node;
+      layoutInfo.column = column;
       newLayoutInfos.set(key, layoutInfo);
 
       columnHeights[column] += layoutInfo.rect.height + minSpace.height;
@@ -283,6 +297,7 @@ class WaterfallLayout<T extends object> extends Layout<Node<T>, GridLayoutOption
     let maxHeight = Math.max(...columnHeights);
     this.contentSize = new Size(this.virtualizer.visibleRect.width, maxHeight);
     this.layoutInfos = newLayoutInfos;
+    this.numColumns = numColumns;
   }
 
   getLayoutInfo(key: Key): LayoutInfo {