Floating player position-listener fixes (#289)
## Issues - 251 Dragging the floating player is super laggy Recent changes and/or refactoring combined the effects or added dependancies into the effects, causing them to re-run excessively. ## Changes - Restored effects to their original behavior. - Don't perform the position check when dragging -- only do it when released. - Do proper debouncing for the 'resize' listener -- the previous method was incorrect as a new function is created on each render.
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infinite-persistence
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1 changed files with 98 additions and 90 deletions
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@ -19,9 +19,64 @@ import { isURIEqual } from 'util/lbryURI';
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import AutoplayCountdown from 'component/autoplayCountdown';
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const IS_DESKTOP_MAC = typeof process === 'object' ? process.platform === 'darwin' : false;
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const DEBOUNCE_WINDOW_RESIZE_HANDLER_MS = 60;
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const DEBOUNCE_WINDOW_RESIZE_HANDLER_MS = 100;
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export const INLINE_PLAYER_WRAPPER_CLASS = 'inline-player__wrapper';
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function getScreenWidth() {
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if (document && document.documentElement) {
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return document.documentElement.clientWidth;
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} else {
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return window.innerWidth;
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}
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}
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function getScreenHeight() {
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if (document && document.documentElement) {
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return document.documentElement.clientHeight;
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} else {
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return window.innerHeight;
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}
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}
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function getFloatingPlayerRect() {
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// TODO: use 'fileViewerRect'?
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const FLOATING_PLAYER_CLASS = 'content__viewer--floating';
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const elem = document.querySelector(`.${FLOATING_PLAYER_CLASS}`);
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if (elem) {
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return elem.getBoundingClientRect();
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} else {
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return null;
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}
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}
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function clampRectToScreen(x, y, rect) {
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if (rect) {
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const ESTIMATED_SCROLL_BAR_PX = 50;
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const screenW = getScreenWidth();
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const screenH = getScreenHeight();
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if (x + rect.width > screenW - ESTIMATED_SCROLL_BAR_PX) {
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x = screenW - rect.width - ESTIMATED_SCROLL_BAR_PX;
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}
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if (y + rect.height > screenH) {
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y = screenH - rect.height;
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}
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}
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return { x, y };
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}
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function calculateRelativePos(x, y) {
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return {
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x: x / getScreenWidth(),
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y: y / getScreenHeight(),
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};
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}
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// ****************************************************************************
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// ****************************************************************************
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type Props = {
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isFloating: boolean,
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fileInfo: FileListItem,
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@ -84,10 +139,7 @@ export default function FileRenderFloating(props: Props) {
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x: -25,
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y: window.innerHeight - 400,
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});
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const [relativePos, setRelativePos] = useState({
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x: 0,
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y: 0,
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});
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const relativePosRef = React.useRef({ x: 0, y: 0 });
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const navigateUrl =
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playingUri &&
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@ -102,93 +154,49 @@ export default function FileRenderFloating(props: Props) {
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? __("It looks like you deleted or moved this file. We're rebuilding it now. It will only take a few seconds.")
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: __('Loading');
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function getScreenWidth() {
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if (document && document.documentElement) {
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return document.documentElement.clientWidth;
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} else {
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return window.innerWidth;
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}
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function restoreToRelativePosition() {
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const newX = Math.round(relativePosRef.current.x * getScreenWidth());
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const newY = Math.round(relativePosRef.current.y * getScreenHeight());
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setPosition(clampRectToScreen(newX, newY, getFloatingPlayerRect()));
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}
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function getScreenHeight() {
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if (document && document.documentElement) {
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return document.documentElement.clientHeight;
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} else {
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return window.innerHeight;
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}
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}
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const clampToScreenOnResize = React.useCallback(
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debounce(() => {
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restoreToRelativePosition();
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}, DEBOUNCE_WINDOW_RESIZE_HANDLER_MS),
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[]
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);
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const clampToScreen = React.useCallback((pos) => {
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const ESTIMATED_SCROLL_BAR_PX = 50;
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const FLOATING_PLAYER_CLASS = 'content__viewer--floating';
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const fpPlayerElem = document.querySelector(`.${FLOATING_PLAYER_CLASS}`);
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if (fpPlayerElem) {
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if (pos.x + fpPlayerElem.getBoundingClientRect().width > getScreenWidth() - ESTIMATED_SCROLL_BAR_PX) {
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pos.x = getScreenWidth() - fpPlayerElem.getBoundingClientRect().width - ESTIMATED_SCROLL_BAR_PX;
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}
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if (pos.y + fpPlayerElem.getBoundingClientRect().height > getScreenHeight()) {
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pos.y = getScreenHeight() - fpPlayerElem.getBoundingClientRect().height;
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}
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}
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}, []);
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// Updated 'relativePos' based on persisted 'position':
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const stringifiedPosition = JSON.stringify(position);
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// ???
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useEffect(() => {
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const jsonPosition = JSON.parse(stringifiedPosition);
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setRelativePos({
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x: jsonPosition.x / getScreenWidth(),
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y: jsonPosition.y / getScreenHeight(),
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});
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}, [stringifiedPosition]);
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// Ensure player is within screen when 'isFloating' changes.
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useEffect(() => {
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const jsonPosition = JSON.parse(stringifiedPosition);
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if (isFloating) {
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// When the player begins floating, remove the comment source
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// so that it doesn't try to resize again in case of going back
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// to the origin's comment section and fail to position correctly
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if (isComment && playingUri) clearSecondarySource(playingUri.uri);
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let pos = { x: jsonPosition.x, y: jsonPosition.y };
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clampToScreen(pos);
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if (pos.x !== position.x || pos.y !== position.y) {
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setPosition({ x: pos.x, y: pos.y });
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}
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}
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}, [
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clampToScreen,
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clearSecondarySource,
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isComment,
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isFloating,
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playingUri,
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position.x,
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position.y,
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setPosition,
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stringifiedPosition,
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]);
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}, [isFloating, isComment, clearSecondarySource, playingUri]);
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// Initial update for relativePosRef:
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useEffect(() => {
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relativePosRef.current = calculateRelativePos(position.x, position.y);
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}, []); // eslint-disable-line react-hooks/exhaustive-deps
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// Ensure player is within screen when 'isFloating' changes.
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useEffect(() => {
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if (isFloating) {
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restoreToRelativePosition();
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}
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// eslint-disable-next-line react-hooks/exhaustive-deps
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}, [isFloating]);
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// Listen to main-window resizing and adjust the fp position accordingly:
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useEffect(() => {
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const handleMainWindowResize = debounce(() => {
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let newPos = {
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x: Math.round(relativePos.x * getScreenWidth()),
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y: Math.round(relativePos.y * getScreenHeight()),
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};
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clampToScreen(newPos);
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setPosition({ x: newPos.x, y: newPos.y });
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}, DEBOUNCE_WINDOW_RESIZE_HANDLER_MS);
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window.addEventListener('resize', handleMainWindowResize);
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return () => window.removeEventListener('resize', handleMainWindowResize);
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// 'relativePos' is needed in the dependency list to avoid stale closure.
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// Otherwise, this could just be changed to a one-time effect.
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}, [clampToScreen, relativePos.x, relativePos.y, setPosition]);
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if (isFloating) {
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window.addEventListener('resize', clampToScreenOnResize);
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return () => window.removeEventListener('resize', clampToScreenOnResize);
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}
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}, [isFloating, clampToScreenOnResize]);
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const handleResize = React.useCallback(() => {
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const element = mainFilePlaying
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@ -283,25 +291,25 @@ export default function FileRenderFloating(props: Props) {
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function handleDragMove(e, ui) {
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const { x, y } = position;
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const newX = x + ui.deltaX;
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const newY = y + ui.deltaY;
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const newX = ui.x;
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const newY = ui.y;
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// Mark as dragging if the position changed and we were not dragging before.
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if (!wasDragging && (newX !== x || newY !== y)) {
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setWasDragging(true);
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}
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setPosition({
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x: newX,
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y: newY,
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});
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}
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function handleDragStop(e) {
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function handleDragStop(e, ui) {
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if (wasDragging) {
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setWasDragging(false);
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setRelativePos({
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x: position.x / getScreenWidth(),
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y: position.y / getScreenHeight(),
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});
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}
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let newPos = { x: ui.x, y: ui.y };
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if (newPos.x !== position.x || newPos.y !== position.y) {
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newPos = clampRectToScreen(newPos.x, newPos.y, getFloatingPlayerRect());
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setPosition(newPos);
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relativePosRef.current = calculateRelativePos(newPos.x, newPos.y);
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}
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}
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