feat(flat-components): add avatar window (#1847)

* feat(flat-components): add avatar window

* delete debug code

packages/flat-components/package.json

@@ -19,6 +19,7 @@
     "@netless/flat-i18n": "workspace:*",
     "@netless/flat-server-api": "workspace:*",
     "@netless/flat-services": "workspace:*",
+    "@wopjs/dom": "^0.1.3",
     "antd": "^4.23.2",
     "classnames": "^2.3.1",
     "date-fns": "^2.29.3",

packages/flat-components/src/components/ClassroomPage/AvatarWindow/AvatarWindow.stories.tsx

@@ -0,0 +1,58 @@
+import React, { useState } from "react";
+import { Meta, Story } from "@storybook/react";
+import { AvatarWindow, AvatarWindowProps, fixRect } from ".";
+import { VideoAvatar } from "../VideoAvatar";
+
+const storyMeta: Meta = {
+    title: "ClassroomPage/AvatarWindow",
+    component: AvatarWindow,
+    argTypes: {},
+};
+
+export default storyMeta;
+
+export const Overview: Story<Pick<AvatarWindowProps, "readonly" | "onDoubleClick">> = props => {
+    const [camera, setCamera] = useState(false);
+    const [mic, setMic] = useState(true);
+    const [rect, setRect] = useState({ x: 10, y: 20, width: 100, height: 75 });
+
+    return (
+        <div
+            style={{
+                width: "500px",
+                height: "400px",
+                overflow: "hidden",
+                border: "1px solid green",
+                position: "relative",
+            }}
+        >
+            <AvatarWindow
+                mode="normal"
+                readonly={props.readonly}
+                rect={rect}
+                onDoubleClick={props.onDoubleClick}
+                onResize={(rect, handle) => setRect(fixRect(rect, handle, 3 / 4, 100, 500, 400))}
+            >
+                <VideoAvatar
+                    isCreator
+                    avatarUser={{
+                        name: "Hello",
+                        userUUID: "",
+                        mic,
+                        camera,
+                        avatar: "http://placekitten.com/64/64",
+                    }}
+                    updateDeviceState={(_, camera_, mic_) => {
+                        if (camera !== camera_) {
+                            setCamera(camera_);
+                        }
+                        if (mic !== mic_) {
+                            setMic(mic_);
+                        }
+                    }}
+                    userUUID=""
+                />
+            </AvatarWindow>
+        </div>
+    );
+};

packages/flat-components/src/components/ClassroomPage/AvatarWindow/index.tsx

@@ -0,0 +1,278 @@
+import "./style.less";
+
+import React, { useEffect, useRef } from "react";
+import classNames from "classnames";
+import { listen } from "@wopjs/dom";
+
+const preventEvent = (ev: React.UIEvent | Event): void => {
+    ev.stopPropagation();
+    if (ev.cancelable) {
+        ev.preventDefault();
+    }
+};
+
+export interface AvatarWindowProps {
+    mode: "normal" | "maximized";
+    rect: Rectangle;
+    index?: number;
+    zIndex?: number;
+    hidden?: boolean;
+    readonly?: boolean;
+    onClick?: () => void;
+    onResize?: (newRectangle: Rectangle, handle?: ResizeHandle) => void;
+    onDoubleClick?: () => void;
+    onDragging?: (ev: PointerEvent) => void;
+    onDragEnd?: (ev: PointerEvent) => void;
+}
+
+export interface Rectangle {
+    x: number;
+    y: number;
+    width: number;
+    height: number;
+}
+
+export type ResizeHandle = "" | "n" | "s" | "w" | "e" | "nw" | "ne" | "sw" | "se";
+
+export const AvatarWindow: React.FC<AvatarWindowProps> = ({
+    mode,
+    rect,
+    index,
+    zIndex,
+    hidden,
+    readonly,
+    children,
+    onClick,
+    onResize,
+    onDoubleClick,
+    onDragging,
+    onDragEnd,
+}) => {
+    const lastClick = useRef({ t: 0, x: -100, y: -100 });
+    const disposers = useRef<Array<() => void>>([]);
+
+    useEffect(
+        () => () => {
+            disposers.current.forEach(dispose => dispose());
+            disposers.current = [];
+        },
+        [],
+    );
+
+    const handleTrackStart = (ev: React.PointerEvent<HTMLDivElement>): void => {
+        if (!ev.isPrimary || readonly || ev.button !== 0) {
+            return;
+        }
+
+        const target = ev.target as HTMLElement;
+        // filter out events on buttons, which should be handled by the button itself
+        for (
+            let node: HTMLElement | null = target;
+            node && node !== ev.currentTarget;
+            node = node.parentElement
+        ) {
+            if (node.tagName === "BUTTON") {
+                return;
+            }
+        }
+
+        const now = Date.now();
+        if (now - lastClick.current.t <= 500) {
+            if (
+                Math.abs(lastClick.current.x - ev.clientX) <= 5 &&
+                Math.abs(lastClick.current.y - ev.clientY) <= 5
+            ) {
+                onDoubleClick?.();
+            }
+            return;
+        }
+        lastClick.current = { t: now, x: ev.clientX, y: ev.clientY };
+
+        const main = ev.currentTarget.parentElement as HTMLElement;
+        preventEvent(ev);
+        target.setPointerCapture(ev.pointerId);
+        main.classList.add("window-grabbing");
+
+        const trackingHandle = target.dataset?.windowHandle as ResizeHandle | undefined;
+        const { pageX: trackStartPageX, pageY: trackStartPageY } = ev;
+
+        const handleTracking = (ev: PointerEvent): void => {
+            if (!ev.isPrimary || readonly) {
+                return;
+            }
+
+            preventEvent(ev);
+
+            const { pageX, pageY } = ev;
+            const offsetX = pageX - trackStartPageX;
+            const offsetY = pageY - trackStartPageY;
+
+            let { x: newX, y: newY, width: newWidth, height: newHeight } = rect;
+
+            switch (trackingHandle) {
+                case "n": {
+                    newY = rect.y + offsetY;
+                    newHeight = rect.height - offsetY;
+                    break;
+                }
+                case "s": {
+                    newHeight = rect.height + offsetY;
+                    break;
+                }
+                case "w": {
+                    newX = rect.x + offsetX;
+                    newWidth = rect.width - offsetX;
+                    break;
+                }
+                case "e": {
+                    newWidth = rect.width + offsetX;
+                    break;
+                }
+                case "nw": {
+                    newX = rect.x + offsetX;
+                    newY = rect.y + offsetY;
+                    newWidth = rect.width - offsetX;
+                    newHeight = rect.height - offsetY;
+                    break;
+                }
+                case "ne": {
+                    newY = rect.y + offsetY;
+                    newWidth = rect.width + offsetX;
+                    newHeight = rect.height - offsetY;
+                    break;
+                }
+                case "sw": {
+                    newX = rect.x + offsetX;
+                    newWidth = rect.width - offsetX;
+                    newHeight = rect.height + offsetY;
+                    break;
+                }
+                case "se": {
+                    newWidth = rect.width + offsetX;
+                    newHeight = rect.height + offsetY;
+                    break;
+                }
+                default: {
+                    newX = rect.x + offsetX;
+                    newY = rect.y + offsetY;
+                    break;
+                }
+            }
+
+            onDragging?.(ev);
+            onResize?.({ x: newX, y: newY, width: newWidth, height: newHeight }, trackingHandle);
+        };
+
+        const handleTrackEnd = (ev: PointerEvent): void => {
+            if (!ev.isPrimary) {
+                return;
+            }
+
+            target.releasePointerCapture(ev.pointerId);
+            preventEvent(ev);
+            onDragEnd?.(ev);
+
+            disposers.current.forEach(dispose => dispose());
+            disposers.current = [];
+        };
+
+        disposers.current.push(
+            () => main.classList.remove("window-grabbing"),
+            listen(window, "pointermove", handleTracking, { passive: false }),
+            listen(window, "pointerup", handleTrackEnd, { passive: false }),
+            listen(window, "pointercancel", handleTrackEnd, { passive: false }),
+        );
+    };
+
+    const style =
+        mode === "normal"
+            ? ({
+                  position: "absolute",
+                  // Prevent a rendering issue on Chrome when set transform to sub-pixel values
+                  width: rect.width | 0,
+                  height: rect.height | 0,
+                  transform: `translate(${rect.x | 0}px,${rect.y | 0}px)`,
+                  zIndex: zIndex,
+              } as React.CSSProperties)
+            : ({
+                  flex: 1,
+                  order: index,
+              } as React.CSSProperties);
+
+    return (
+        <div
+            className={classNames("window", {
+                "window-readonly": readonly,
+                "window-maximized": mode === "maximized",
+            })}
+            data-index={index}
+            data-z-index={zIndex}
+            hidden={hidden}
+            style={style}
+        >
+            <div className="window-main" onClick={onClick} onPointerDown={handleTrackStart}>
+                {children}
+            </div>
+            <div className="window-resize-handles" onPointerDown={handleTrackStart}>
+                <div className="window-n window-resize-handle" data-window-handle="n" />
+                <div className="window-s window-resize-handle" data-window-handle="s" />
+                <div className="window-w window-resize-handle" data-window-handle="w" />
+                <div className="window-e window-resize-handle" data-window-handle="e" />
+                <div className="window-nw window-resize-handle" data-window-handle="nw" />
+                <div className="window-ne window-resize-handle" data-window-handle="ne" />
+                <div className="window-sw window-resize-handle" data-window-handle="sw" />
+                <div className="window-se window-resize-handle" data-window-handle="se" />
+            </div>
+        </div>
+    );
+};
+
+const clamp = (value: number, min: number, max: number): number =>
+    value < min ? min : value > max ? max : value;
+
+export const fixRect = (
+    input: Rectangle,
+    handle: ResizeHandle | undefined,
+    ratio: number,
+    minWidth: number,
+    maxWidth: number,
+    maxHeight: number,
+): Rectangle => {
+    const { x, y, width, height } = input;
+
+    // Keep the ratio
+    const fixedWidth = height / ratio;
+    const fixedHeight = width * ratio;
+    let newRect: Rectangle;
+    if (!handle || handle === "e" || handle === "w") {
+        newRect = { x, y, width, height: fixedHeight };
+    } else if (handle === "s" || handle === "n") {
+        newRect = { x, y, width: fixedWidth, height };
+    } else if (fixedHeight < height) {
+        const newY = handle === "ne" || handle === "nw" ? y + height - fixedHeight : y;
+        newRect = { x, y: newY, width, height: fixedHeight };
+    } else {
+        const newX = handle === "nw" || handle === "sw" ? x + width - fixedWidth : x;
+        newRect = { x: newX, y, width: fixedWidth, height };
+    }
+
+    // Clamp size
+    if (!(minWidth <= newRect.width && newRect.width <= maxWidth && newRect.height <= maxHeight)) {
+        const newWidth = clamp(newRect.width, minWidth, Math.min(maxWidth, maxHeight / ratio));
+        const newHeight = newWidth * ratio;
+        if (handle === "w" || handle === "sw" || handle === "nw") {
+            newRect.x = x + width - newWidth;
+        }
+        if (handle === "n" || handle === "ne" || handle === "nw") {
+            newRect.y = y + height - newHeight;
+        }
+        newRect.width = newWidth;
+        newRect.height = newHeight;
+    }
+
+    // Clamp position
+    newRect.x = clamp(newRect.x, 0, maxWidth - newRect.width);
+    newRect.y = clamp(newRect.y, 0, maxHeight - newRect.height);
+
+    return newRect;
+};