bigbluebutton-Github/bigbluebutton-html5/imports/ui/components/whiteboard/cursors/component.jsx
2022-08-23 12:08:31 +00:00

346 lines
11 KiB
JavaScript

import * as React from "react";
import { _ } from "lodash";
const XS_OFFSET = 8;
const SMALL_OFFSET = 18;
const XL_OFFSET = 85;
const BOTTOM_CAM_HANDLE_HEIGHT = 10;
const PRES_TOOLBAR_HEIGHT = 35;
function usePrevious(value) {
const ref = React.useRef();
React.useEffect(() => {
ref.current = value;
}, [value]);
return ref.current;
}
const renderCursor = (
name,
color,
x,
y,
currentPoint,
pageState,
isMultiUserActive,
owner = false,
) => {
const z = !owner ? 2 : 1;
let _x = null;
let _y = null;
if (!currentPoint) {
_x = (x + pageState?.camera?.point[0]) * pageState?.camera?.zoom;
_y = (y + pageState?.camera?.point[1]) * pageState?.camera?.zoom;
}
return (
<>
<div
key={`${name}-${color}-${x}-${y}`}
style={{
zIndex: z,
position: "absolute",
left: (_x || x) - 2.5,
top: (_y || y) - 2.5,
width: 5,
height: 5,
borderRadius: "50%",
background: `${color}`,
pointerEvents: "none",
}}
/>
{isMultiUserActive && <div
style={{
zIndex: z,
position: "absolute",
pointerEvents: "none",
left: (_x || x) + 3.75,
top: (_y || y) + 3,
paddingLeft: ".25rem",
paddingRight: ".25rem",
paddingBottom: ".1rem",
lineHeight: "1rem",
borderRadius: "2px",
color: "#FFF",
backgroundColor: color,
border: `1px solid ${color}`,
}}
>
{name}
</div>}
</>
);
};
const PositionLabel = (props) => {
const {
currentUser,
currentPoint,
pageState,
publishCursorUpdate,
whiteboardId,
pos,
isMultiUserActive,
} = props;
const { name, color } = currentUser;
const prevCurrentPoint = usePrevious(currentPoint);
React.useEffect(() => {
try {
const point = [pos.x, pos.y];
publishCursorUpdate({
xPercent:
point[0] / pageState?.camera?.zoom - pageState?.camera?.point[0],
yPercent:
point[1] / pageState?.camera?.zoom - pageState?.camera?.point[1],
whiteboardId,
});
} catch (e) {
console.log(e);
}
}, [pos?.x, pos?.y]);
return (
<>
<div style={{ position: "absolute", height: "100%", width: "100%" }}>
{renderCursor(name, color, pos.x, pos.y, currentPoint, props.pageState, isMultiUserActive(whiteboardId))}
</div>
</>
);
};
export default function Cursors(props) {
let cursorWrapper = React.useRef(null);
const [active, setActive] = React.useState(false);
const [pos, setPos] = React.useState({ x: 0, y: 0 });
const {
whiteboardId,
otherCursors,
currentUser,
tldrawAPI,
publishCursorUpdate,
children,
isViewersCursorLocked,
hasMultiUserAccess,
isMultiUserActive,
application,
isPanning,
} = props;
const start = () => setActive(true);
const end = () => {
publishCursorUpdate({
xPercent: 0,
yPercent: 0,
whiteboardId: whiteboardId,
});
setActive(false);
};
const moved = (event) => {
const { type, x, y } = event;
const nav = document.getElementById('Navbar');
const getSibling = (el) => el?.previousSibling || null;
const panel = getSibling(nav);
const webcams = document.getElementById('cameraDock');
const subPanel = panel && getSibling(panel);
const camPosition = document.getElementById('layout')?.getAttribute('data-cam-position') || null;
const sl = document.getElementById('layout')?.getAttribute('data-layout');
const presentationContainer = document.querySelector('[data-test="presentationContainer"]');
const presentation = document.getElementById('currentSlideText')?.parentElement;
let yOffset = 0;
let xOffset = 0;
const calcPresOffset = () => {
yOffset += (parseFloat(presentationContainer?.style?.height) - (parseFloat(presentation?.style?.height) + PRES_TOOLBAR_HEIGHT)) / 2;
xOffset += (parseFloat(presentationContainer?.style?.width) - parseFloat(presentation?.style?.width)) / 2;
}
// If the presentation container is the full screen element we don't need any offsets
const fsEl = document?.webkitFullscreenElement || document?.fullscreenElement;
if (fsEl?.getAttribute('data-test') === "presentationContainer") {
calcPresOffset();
return setPos({ x: x - xOffset, y: y - yOffset });
}
if (nav) yOffset += parseFloat(nav?.style?.height);
if (panel) xOffset += parseFloat(panel?.style?.width);
if (subPanel) xOffset += parseFloat(subPanel?.style?.width);
// disable native tldraw eraser animation
const eraserLine = document.getElementsByClassName('tl-erase-line')[0];
if (eraserLine) eraserLine.style.display = `none`;
if (type === 'touchmove') {
calcPresOffset();
!active && setActive(true);
return setPos({ x: event?.changedTouches[0]?.clientX - xOffset, y: event?.changedTouches[0]?.clientY - yOffset });
}
if (document?.documentElement?.dir === 'rtl') {
xOffset = 0;
if (presentationContainer && presentation) {
calcPresOffset();
}
if (sl.includes('custom')) {
if (webcams) {
if (camPosition === 'contentTop' || !camPosition) {
yOffset += (parseFloat(webcams?.style?.height || 0) + BOTTOM_CAM_HANDLE_HEIGHT);
}
if (camPosition === 'contentBottom') {
yOffset -= BOTTOM_CAM_HANDLE_HEIGHT;
}
if (camPosition === 'contentRight') {
xOffset += (parseFloat(webcams?.style?.width || 0) + SMALL_OFFSET);
}
}
}
if (sl?.includes('smart')) {
if (panel || subPanel) {
const dockPos = webcams?.getAttribute("data-position");
if (dockPos === 'contentTop') {
yOffset += (parseFloat(webcams?.style?.height || 0) + SMALL_OFFSET);
}
}
}
if (webcams && sl?.includes('videoFocus')) {
xOffset += parseFloat(nav?.style?.width);
yOffset += (parseFloat(panel?.style?.height || 0) - XL_OFFSET);
}
} else {
if (sl.includes('custom')) {
if (webcams) {
if (camPosition === 'contentTop' || !camPosition) {
yOffset += (parseFloat(webcams?.style?.height) || 0) + XS_OFFSET;
}
if (camPosition === 'contentBottom') {
yOffset -= BOTTOM_CAM_HANDLE_HEIGHT;
}
if (camPosition === 'contentLeft') {
xOffset += (parseFloat(webcams?.style?.width) || 0) + SMALL_OFFSET;
}
}
}
if (sl.includes('smart')) {
if (panel || subPanel) {
const dockPos = webcams?.getAttribute("data-position");
if (dockPos === 'contentLeft') {
xOffset += (parseFloat(webcams?.style?.width || 0) + SMALL_OFFSET);
}
if (dockPos === 'contentTop') {
yOffset += (parseFloat(webcams?.style?.height || 0) + SMALL_OFFSET);
}
}
if (!panel && !subPanel) {
if (webcams) {
xOffset = parseFloat(webcams?.style?.width || 0) + SMALL_OFFSET;
}
}
}
if (sl?.includes('videoFocus')) {
if (webcams) {
xOffset = parseFloat(subPanel?.style?.width);
yOffset = parseFloat(panel?.style?.height);
}
}
if (presentationContainer && presentation) {
calcPresOffset();
}
}
return setPos({ x: event.x - xOffset, y: event.y - yOffset });
}
React.useEffect(() => {
!cursorWrapper.hasOwnProperty("mouseenter") &&
cursorWrapper?.addEventListener("mouseenter", start);
!cursorWrapper.hasOwnProperty("mouseleave") &&
cursorWrapper?.addEventListener("mouseleave", end);
!cursorWrapper.hasOwnProperty("touchend") &&
cursorWrapper?.addEventListener("touchend", end);
!cursorWrapper.hasOwnProperty("mousemove") &&
cursorWrapper?.addEventListener("mousemove", moved);
!cursorWrapper.hasOwnProperty("touchmove") &&
cursorWrapper?.addEventListener("touchmove", moved);
}, [cursorWrapper]);
React.useEffect(() => {
return () => {
if (cursorWrapper) {
cursorWrapper.removeEventListener('mouseenter', start);
cursorWrapper.removeEventListener('mouseleave', end);
cursorWrapper.removeEventListener('mousemove', moved);
cursorWrapper.removeEventListener('touchend', end);
cursorWrapper.removeEventListener('touchmove', moved);
}
}
});
const multiUserAccess = hasMultiUserAccess(whiteboardId, currentUser?.userId);
let cursorType = multiUserAccess || currentUser?.presenter ? "none" : "default";
if (isPanning) cursorType = 'grab';
return (
<span ref={(r) => (cursorWrapper = r)}>
<div style={{ height: "100%", cursor: cursorType }}>
{(active && multiUserAccess || (active && currentUser?.presenter)) && (
<PositionLabel
pos={pos}
otherCursors={otherCursors}
currentUser={currentUser}
currentPoint={tldrawAPI?.currentPoint}
pageState={tldrawAPI?.getPageState()}
publishCursorUpdate={publishCursorUpdate}
whiteboardId={whiteboardId}
isMultiUserActive={isMultiUserActive}
/>
)}
{children}
</div>
{otherCursors
.filter((c) => c?.xPercent && c?.yPercent)
.filter((c) => {
if ((isViewersCursorLocked && c?.role !== "VIEWER") || !isViewersCursorLocked || currentUser?.presenter) {
return c;
}
return null;
})
.map((c) => {
if (c && currentUser.userId !== c?.userId) {
if (c.presenter) {
return renderCursor(
c?.userName,
"#C70039",
c?.xPercent,
c?.yPercent,
null,
tldrawAPI?.getPageState(),
isMultiUserActive(whiteboardId),
true
);
}
return hasMultiUserAccess(whiteboardId, c?.userId) && (
renderCursor(
c?.userName,
"#AFE1AF",
c?.xPercent,
c?.yPercent,
null,
tldrawAPI?.getPageState(),
isMultiUserActive(whiteboardId),
true
)
);
}
})}
</span>
);
}