Merge branch 'main' into livekit-experiment

src/video-grid/TileWrapper.tsx

@@ -0,0 +1,100 @@
+/*
+Copyright 2023 New Vector Ltd
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React, { FC, memo, ReactNode, RefObject, useRef } from "react";
+import { EventTypes, Handler, useDrag } from "@use-gesture/react";
+import { SpringValue, to } from "@react-spring/web";
+
+import { ChildrenProperties } from "./VideoGrid";
+
+interface Props<T> {
+  id: string;
+  onDragRef: RefObject<
+    (
+      tileId: string,
+      state: Parameters<Handler<"drag", EventTypes["drag"]>>[0]
+    ) => void
+  >;
+  targetWidth: number;
+  targetHeight: number;
+  data: T;
+  opacity: SpringValue<number>;
+  scale: SpringValue<number>;
+  shadow: SpringValue<number>;
+  shadowSpread: SpringValue<number>;
+  zIndex: SpringValue<number>;
+  x: SpringValue<number>;
+  y: SpringValue<number>;
+  width: SpringValue<number>;
+  height: SpringValue<number>;
+  children: (props: ChildrenProperties<T>) => ReactNode;
+}
+
+/**
+ * A wrapper around a tile in a video grid. This component exists to decouple
+ * child components from the grid.
+ */
+export const TileWrapper: FC<Props<unknown>> = memo(
+  ({
+    id,
+    onDragRef,
+    targetWidth,
+    targetHeight,
+    data,
+    opacity,
+    scale,
+    shadow,
+    shadowSpread,
+    zIndex,
+    x,
+    y,
+    width,
+    height,
+    children,
+  }) => {
+    const ref = useRef<HTMLElement | null>(null);
+
+    useDrag((state) => onDragRef?.current!(id, state), {
+      target: ref,
+      filterTaps: true,
+      preventScroll: true,
+    });
+
+    return (
+      <>
+        {children({
+          ref,
+          style: {
+            opacity,
+            scale,
+            zIndex,
+            x,
+            y,
+            width,
+            height,
+            boxShadow: to(
+              [shadow, shadowSpread],
+              (s, ss) => `rgba(0, 0, 0, 0.5) 0px ${s}px ${2 * s}px ${ss}px`
+            ),
+          },
+          targetWidth,
+          targetHeight,
+          data,
+        })}
+      </>
+    );
+  }
+);