kopia lustrzana https://github.com/mifi/lossless-cut
341 wiersze
14 KiB
JavaScript
341 wiersze
14 KiB
JavaScript
import React, { memo, useRef, useMemo, useCallback, useEffect, useState } from 'react';
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import { motion, useMotionValue, useSpring } from 'framer-motion';
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import debounce from 'lodash/debounce';
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import { useTranslation } from 'react-i18next';
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import { FaCaretDown, FaCaretUp } from 'react-icons/fa';
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import TimelineSeg from './TimelineSeg';
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import BetweenSegments from './BetweenSegments';
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import useContextMenu from './hooks/useContextMenu';
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import useUserSettings from './hooks/useUserSettings';
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import { timelineBackground, darkModeTransition } from './colors';
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const currentTimeWidth = 1;
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const Waveform = memo(({ waveform, calculateTimelinePercent, durationSafe }) => {
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const [style, setStyle] = useState({ display: 'none' });
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const leftPos = calculateTimelinePercent(waveform.from);
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const toTruncated = Math.min(waveform.to, durationSafe);
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// Prevents flash
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function onLoad() {
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setStyle({
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position: 'absolute', height: '100%', left: leftPos, width: `${((toTruncated - waveform.from) / durationSafe) * 100}%`,
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});
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}
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return (
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<img src={waveform.url} draggable={false} style={style} alt="" onLoad={onLoad} />
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);
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});
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const Waveforms = memo(({ calculateTimelinePercent, durationSafe, waveforms, zoom, height }) => (
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<div style={{ height, width: `${zoom * 100}%`, position: 'relative' }}>
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{waveforms.map((waveform) => (
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<Waveform key={`${waveform.from}-${waveform.to}`} waveform={waveform} calculateTimelinePercent={calculateTimelinePercent} durationSafe={durationSafe} />
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))}
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</div>
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));
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const CommandedTime = memo(({ commandedTimePercent }) => {
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const color = 'var(--gray12)';
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const commonStyle = { left: commandedTimePercent, position: 'absolute', zIndex: 4, pointerEvents: 'none' };
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return (
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<>
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<FaCaretDown style={{ ...commonStyle, top: 0, color, fontSize: 14, marginLeft: -7, marginTop: -6 }} />
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<div style={{ ...commonStyle, bottom: 0, top: 0, backgroundColor: color, width: currentTimeWidth }} />
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<FaCaretUp style={{ ...commonStyle, bottom: 0, color, fontSize: 14, marginLeft: -7, marginBottom: -5 }} />
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</>
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);
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});
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const Timeline = memo(({
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durationSafe, startTimeOffset, playerTime, commandedTime, relevantTime,
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zoom, neighbouringKeyFrames, seekAbs, apparentCutSegments,
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setCurrentSegIndex, currentSegIndexSafe, inverseCutSegments, formatTimecode, formatTimeAndFrames,
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waveforms, shouldShowWaveform, shouldShowKeyframes, thumbnails,
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onZoomWindowStartTimeChange, waveformEnabled, showThumbnails,
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playing, isFileOpened, onWheel, commandedTimeRef, goToTimecode, isSegmentSelected,
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}) => {
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const { t } = useTranslation();
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const timelineHeight = 36;
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const { invertCutSegments } = useUserSettings();
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const timelineScrollerRef = useRef();
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const timelineScrollerSkipEventRef = useRef();
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const timelineScrollerSkipEventDebounce = useRef();
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const timelineWrapperRef = useRef();
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const [hoveringTime, setHoveringTime] = useState();
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const displayTime = (hoveringTime != null && isFileOpened && !playing ? hoveringTime : relevantTime) + startTimeOffset;
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const displayTimePercent = useMemo(() => `${Math.round((displayTime / durationSafe) * 100)}%`, [displayTime, durationSafe]);
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const isZoomed = zoom > 1;
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// Don't show keyframes if too packed together (at current zoom)
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// See https://github.com/mifi/lossless-cut/issues/259
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// todo
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// const areKeyframesTooClose = keyframes.length > zoom * 200;
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const areKeyframesTooClose = false;
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const calculateTimelinePos = useCallback((time) => (time !== undefined ? Math.min(time / durationSafe, 1) : undefined), [durationSafe]);
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const calculateTimelinePercent = useCallback((time) => {
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const pos = calculateTimelinePos(time);
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return pos !== undefined ? `${pos * 100}%` : undefined;
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}, [calculateTimelinePos]);
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const currentTimePercent = useMemo(() => calculateTimelinePercent(playerTime), [calculateTimelinePercent, playerTime]);
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const commandedTimePercent = useMemo(() => calculateTimelinePercent(commandedTime), [calculateTimelinePercent, commandedTime]);
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const timeOfInterestPosPixels = useMemo(() => {
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// https://github.com/mifi/lossless-cut/issues/676
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const pos = calculateTimelinePos(relevantTime);
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if (pos != null && timelineScrollerRef.current) return pos * zoom * timelineScrollerRef.current.offsetWidth;
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return undefined;
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}, [calculateTimelinePos, relevantTime, zoom]);
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const calcZoomWindowStartTime = useCallback(() => (timelineScrollerRef.current
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? (timelineScrollerRef.current.scrollLeft / (timelineScrollerRef.current.offsetWidth * zoom)) * durationSafe
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: 0), [durationSafe, zoom]);
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// const zoomWindowStartTime = calcZoomWindowStartTime(duration, zoom);
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useEffect(() => {
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timelineScrollerSkipEventDebounce.current = debounce(() => {
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timelineScrollerSkipEventRef.current = false;
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}, 1000);
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}, []);
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function suppressScrollerEvents() {
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timelineScrollerSkipEventRef.current = true;
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timelineScrollerSkipEventDebounce.current();
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}
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const scrollLeftMotion = useMotionValue(0);
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const spring = useSpring(scrollLeftMotion, { damping: 100, stiffness: 1000 });
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useEffect(() => {
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spring.on('change', (value) => {
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if (timelineScrollerSkipEventRef.current) return; // Don't animate while zooming
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timelineScrollerRef.current.scrollLeft = value;
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});
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}, [spring]);
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// Pan timeline when cursor moves out of timeline window
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useEffect(() => {
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if (timeOfInterestPosPixels == null || timelineScrollerSkipEventRef.current) return;
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if (timeOfInterestPosPixels > timelineScrollerRef.current.scrollLeft + timelineScrollerRef.current.offsetWidth) {
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const timelineWidth = timelineWrapperRef.current.offsetWidth;
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const scrollLeft = timeOfInterestPosPixels - (timelineScrollerRef.current.offsetWidth * 0.1);
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scrollLeftMotion.set(Math.min(scrollLeft, timelineWidth - timelineScrollerRef.current.offsetWidth));
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} else if (timeOfInterestPosPixels < timelineScrollerRef.current.scrollLeft) {
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const scrollLeft = timeOfInterestPosPixels - (timelineScrollerRef.current.offsetWidth * 0.9);
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scrollLeftMotion.set(Math.max(scrollLeft, 0));
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}
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}, [timeOfInterestPosPixels, scrollLeftMotion]);
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// Keep cursor in middle while zooming
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useEffect(() => {
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suppressScrollerEvents();
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if (isZoomed) {
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const zoomedTargetWidth = timelineScrollerRef.current.offsetWidth * zoom;
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const scrollLeft = Math.max((commandedTimeRef.current / durationSafe) * zoomedTargetWidth - timelineScrollerRef.current.offsetWidth / 2, 0);
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scrollLeftMotion.set(scrollLeft);
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timelineScrollerRef.current.scrollLeft = scrollLeft;
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}
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}, [zoom, durationSafe, commandedTimeRef, scrollLeftMotion, isZoomed]);
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useEffect(() => {
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const cancelWheel = (event) => event.preventDefault();
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const scroller = timelineScrollerRef.current;
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scroller.addEventListener('wheel', cancelWheel, { passive: false });
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return () => {
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scroller.removeEventListener('wheel', cancelWheel);
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};
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}, []);
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const onTimelineScroll = useCallback(() => {
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onZoomWindowStartTimeChange(calcZoomWindowStartTime());
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}, [calcZoomWindowStartTime, onZoomWindowStartTimeChange]);
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// Keep cursor in middle while scrolling
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/* const onTimelineScroll = useCallback((e) => {
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onZoomWindowStartTimeChange(zoomWindowStartTime);
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if (!zoomed || timelineScrollerSkipEventRef.current) return;
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seekAbs((((e.target.scrollLeft + (timelineScrollerRef.current.offsetWidth * 0.5))
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/ (timelineScrollerRef.current.offsetWidth * zoom)) * duration));
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}, [duration, seekAbs, zoomed, zoom, zoomWindowStartTime, onZoomWindowStartTimeChange]); */
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const getMouseTimelinePos = useCallback((e) => {
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const target = timelineWrapperRef.current;
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const rect = target.getBoundingClientRect();
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const relX = e.pageX - (rect.left + document.body.scrollLeft);
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return (relX / target.offsetWidth) * durationSafe;
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}, [durationSafe]);
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const mouseDownRef = useRef();
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const handleScrub = useCallback((e) => seekAbs((getMouseTimelinePos(e))), [seekAbs, getMouseTimelinePos]);
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useEffect(() => {
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setHoveringTime();
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}, [relevantTime]);
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const onMouseDown = useCallback((e) => {
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if (e.nativeEvent.buttons !== 1) return; // not primary button
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handleScrub(e.nativeEvent);
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mouseDownRef.current = e.target;
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function onMouseMove(e2) {
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if (mouseDownRef.current == null) return;
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seekAbs(getMouseTimelinePos(e2));
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}
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function onMouseUp() {
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mouseDownRef.current = undefined;
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window.removeEventListener('mouseup', onMouseUp);
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window.removeEventListener('mousemove', onMouseMove);
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}
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// https://github.com/mifi/lossless-cut/issues/1432
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// https://stackoverflow.com/questions/11533098/how-to-catch-mouse-up-event-outside-of-element
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// https://stackoverflow.com/questions/6073505/what-is-the-difference-between-screenx-y-clientx-y-and-pagex-y
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window.addEventListener('mouseup', onMouseUp, { once: true });
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window.addEventListener('mousemove', onMouseMove);
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}, [getMouseTimelinePos, handleScrub, seekAbs]);
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const onMouseMove = useCallback((e) => {
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if (!mouseDownRef.current) { // no button pressed
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setHoveringTime(getMouseTimelinePos(e.nativeEvent));
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}
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e.preventDefault();
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}, [getMouseTimelinePos]);
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const onMouseOut = useCallback(() => setHoveringTime(), []);
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const contextMenuTemplate = useMemo(() => [
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{ label: t('Seek to timecode'), click: goToTimecode },
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], [goToTimecode, t]);
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useContextMenu(timelineScrollerRef, contextMenuTemplate);
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return (
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// eslint-disable-next-line jsx-a11y/no-static-element-interactions,jsx-a11y/mouse-events-have-key-events
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<div
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style={{ position: 'relative', borderTop: '1px solid var(--gray7)', borderBottom: '1px solid var(--gray7)' }}
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onMouseDown={onMouseDown}
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onMouseMove={onMouseMove}
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onMouseOut={onMouseOut}
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>
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{(waveformEnabled && !shouldShowWaveform) && (
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<div style={{ pointerEvents: 'none', display: 'flex', alignItems: 'center', justifyContent: 'center', height: timelineHeight, bottom: timelineHeight, left: 0, right: 0, color: 'var(--gray11)' }}>
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{t('Zoom in more to view waveform')}
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</div>
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)}
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<div
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style={{ overflowX: 'scroll' }}
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className="hide-scrollbar"
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onWheel={onWheel}
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onScroll={onTimelineScroll}
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ref={timelineScrollerRef}
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>
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{waveformEnabled && shouldShowWaveform && waveforms.length > 0 && (
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<Waveforms
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calculateTimelinePercent={calculateTimelinePercent}
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durationSafe={durationSafe}
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waveforms={waveforms}
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zoom={zoom}
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height={40}
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/>
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)}
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{showThumbnails && (
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<div style={{ height: 60, width: `${zoom * 100}%`, position: 'relative', marginBottom: 3 }}>
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{thumbnails.map((thumbnail, i) => {
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const leftPercent = (thumbnail.time / durationSafe) * 100;
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const nextThumbnail = thumbnails[i + 1];
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const nextThumbTime = nextThumbnail ? nextThumbnail.time : durationSafe;
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const maxWidthPercent = ((nextThumbTime - thumbnail.time) / durationSafe) * 100 * 0.9;
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return (
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<img key={thumbnail.url} src={thumbnail.url} alt="" style={{ position: 'absolute', left: `${leftPercent}%`, height: '100%', boxSizing: 'border-box', zIndex: 1, maxWidth: `${maxWidthPercent}%`, objectFit: 'cover', border: '1px solid rgba(255, 255, 255, 0.5)', borderBottomRightRadius: 15, borderTopLeftRadius: 15, borderTopRightRadius: 15, pointerEvents: 'none' }} />
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);
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})}
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</div>
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)}
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<div
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style={{ height: timelineHeight, width: `${zoom * 100}%`, position: 'relative', backgroundColor: timelineBackground, transition: darkModeTransition }}
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ref={timelineWrapperRef}
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>
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{currentTimePercent !== undefined && (
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<motion.div transition={{ type: 'spring', damping: 70, stiffness: 800 }} animate={{ left: currentTimePercent }} style={{ position: 'absolute', bottom: 0, top: 0, zIndex: 3, backgroundColor: 'var(--gray12)', width: currentTimeWidth, pointerEvents: 'none' }} />
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)}
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{commandedTimePercent !== undefined && (
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<CommandedTime commandedTimePercent={commandedTimePercent} />
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)}
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{apparentCutSegments.map((seg, i) => {
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if (seg.start === 0 && seg.end === 0) return null; // No video loaded
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const selected = invertCutSegments || isSegmentSelected({ segId: seg.segId });
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return (
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<TimelineSeg
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key={seg.segId}
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seg={seg}
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segNum={i}
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onSegClick={setCurrentSegIndex}
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isActive={i === currentSegIndexSafe}
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duration={durationSafe}
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invertCutSegments={invertCutSegments}
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formatTimecode={formatTimecode}
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selected={selected}
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/>
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);
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})}
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{inverseCutSegments.map((seg) => (
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<BetweenSegments
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key={seg.segId}
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start={seg.start}
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end={seg.end}
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duration={durationSafe}
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invertCutSegments={invertCutSegments}
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/>
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))}
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{shouldShowKeyframes && !areKeyframesTooClose && neighbouringKeyFrames.map((f) => (
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<div key={f.time} style={{ position: 'absolute', top: 0, bottom: 0, left: `${(f.time / durationSafe) * 100}%`, marginLeft: -1, width: 1, background: 'var(--gray11)', pointerEvents: 'none' }} />
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))}
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</div>
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</div>
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<div style={{ position: 'absolute', height: timelineHeight, left: 0, right: 0, bottom: 0, display: 'flex', alignItems: 'center', justifyContent: 'center', pointerEvents: 'none', zIndex: 2 }}>
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<div style={{ background: 'rgba(0,0,0,0.4)', borderRadius: 3, padding: '2px 4px', color: 'rgba(255, 255, 255, 0.8)' }}>
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{formatTimeAndFrames(displayTime)}{isZoomed ? ` ${displayTimePercent}` : ''}
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</div>
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</div>
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</div>
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);
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});
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export default Timeline;
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