enabled-multiclip-selection
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@ -33,7 +33,7 @@ export function Timeline() {
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// Timeline shows all tracks (video, audio, effects) and their clips.
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// You can drag media here to add it to your project.
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// Clips can be trimmed, deleted, and moved.
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const { tracks, addTrack, addClipToTrack, removeTrack, toggleTrackMute, removeClipFromTrack, moveClipToTrack, getTotalDuration, selectedClip, clearSelectedClip } =
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const { tracks, addTrack, addClipToTrack, removeTrack, toggleTrackMute, removeClipFromTrack, moveClipToTrack, getTotalDuration, selectedClips, selectClip, deselectClip, clearSelectedClips } =
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useTimelineStore();
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const { mediaItems, addMediaItem } = useMediaStore();
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const { currentTime, duration, seek, setDuration, isPlaying, play, pause, toggle } = usePlaybackStore();
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@ -52,6 +52,16 @@ export function Timeline() {
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y: number;
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} | null>(null);
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// Marquee selection state
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const [marquee, setMarquee] = useState<{
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startX: number;
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startY: number;
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endX: number;
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endY: number;
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active: boolean;
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additive: boolean;
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} | null>(null);
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// Update timeline duration when tracks change
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useEffect(() => {
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const totalDuration = getTotalDuration();
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@ -67,17 +77,99 @@ export function Timeline() {
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}
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}, [contextMenu]);
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// Keyboard event for deleting selected clip
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// Keyboard event for deleting selected clips
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useEffect(() => {
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const handleKeyDown = (e: KeyboardEvent) => {
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if ((e.key === "Delete" || e.key === "Backspace") && selectedClip) {
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removeClipFromTrack(selectedClip.trackId, selectedClip.clipId);
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clearSelectedClip();
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if ((e.key === "Delete" || e.key === "Backspace") && selectedClips.length > 0) {
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selectedClips.forEach(({ trackId, clipId }) => {
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removeClipFromTrack(trackId, clipId);
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});
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clearSelectedClips();
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}
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};
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window.addEventListener("keydown", handleKeyDown);
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return () => window.removeEventListener("keydown", handleKeyDown);
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}, [selectedClip, removeClipFromTrack, clearSelectedClip]);
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}, [selectedClips, removeClipFromTrack, clearSelectedClips]);
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// Mouse down on timeline background to start marquee
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const handleTimelineMouseDown = (e: React.MouseEvent) => {
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if (e.target === e.currentTarget && e.button === 0) {
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setMarquee({
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startX: e.clientX,
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startY: e.clientY,
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endX: e.clientX,
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endY: e.clientY,
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active: true,
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additive: e.metaKey || e.ctrlKey || e.shiftKey,
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});
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}
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};
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// Mouse move to update marquee
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useEffect(() => {
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if (!marquee || !marquee.active) return;
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const handleMouseMove = (e: MouseEvent) => {
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setMarquee((prev) => prev && { ...prev, endX: e.clientX, endY: e.clientY });
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};
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const handleMouseUp = (e: MouseEvent) => {
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setMarquee((prev) => prev && { ...prev, endX: e.clientX, endY: e.clientY, active: false });
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};
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window.addEventListener("mousemove", handleMouseMove);
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window.addEventListener("mouseup", handleMouseUp);
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return () => {
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window.removeEventListener("mousemove", handleMouseMove);
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window.removeEventListener("mouseup", handleMouseUp);
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};
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}, [marquee]);
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// On marquee end, select clips in box
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useEffect(() => {
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if (!marquee || marquee.active) return;
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// Calculate selection box in timeline coordinates
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const timeline = timelineRef.current;
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if (!timeline) return;
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const rect = timeline.getBoundingClientRect();
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const x1 = Math.min(marquee.startX, marquee.endX) - rect.left;
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const x2 = Math.max(marquee.startX, marquee.endX) - rect.left;
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const y1 = Math.min(marquee.startY, marquee.endY) - rect.top;
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const y2 = Math.max(marquee.startY, marquee.endY) - rect.top;
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// Find all clips that intersect the box
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let newSelection: { trackId: string; clipId: string }[] = [];
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tracks.forEach((track, trackIdx) => {
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track.clips.forEach((clip) => {
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const effectiveDuration = clip.duration - clip.trimStart - clip.trimEnd;
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const clipWidth = Math.max(80, effectiveDuration * 50 * zoomLevel);
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const clipLeft = clip.startTime * 50 * zoomLevel;
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const clipTop = trackIdx * 60;
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const clipBottom = clipTop + 60;
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const clipRight = clipLeft + clipWidth;
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// Check intersection
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if (
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x1 < clipRight &&
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x2 > clipLeft &&
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y1 < clipBottom &&
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y2 > clipTop
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) {
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newSelection.push({ trackId: track.id, clipId: clip.id });
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}
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});
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});
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if (newSelection.length > 0) {
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if (marquee.additive) {
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// Add to current selection
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const current = new Set(selectedClips.map((c) => c.trackId + ":" + c.clipId));
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newSelection = [
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...selectedClips,
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...newSelection.filter((c) => !current.has(c.trackId + ":" + c.clipId)),
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];
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}
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clearSelectedClips();
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newSelection.forEach((c) => selectClip(c.trackId, c.clipId, true));
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} else if (!marquee.additive) {
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clearSelectedClips();
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}
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setMarquee(null);
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}, [marquee, tracks, zoomLevel, selectedClips, selectClip, clearSelectedClips]);
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const handleDragEnter = (e: React.DragEvent) => {
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// When something is dragged over the timeline, show overlay
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@ -185,17 +277,12 @@ export function Timeline() {
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}
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};
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const handleTimelineClick = (e: React.MouseEvent) => {
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const timeline = timelineRef.current;
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if (!timeline || duration === 0) return;
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const rect = timeline.getBoundingClientRect();
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const x = e.clientX - rect.left;
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const timelineWidth = rect.width;
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const visibleDuration = duration / zoomLevel;
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const clickedTime = (x / timelineWidth) * visibleDuration;
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seek(Math.max(0, Math.min(duration, clickedTime)));
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// Deselect all clips when clicking empty timeline area
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const handleTimelineAreaClick = (e: React.MouseEvent) => {
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// Only clear selection if the click target is the timeline background (not a child/clip)
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if (e.target === e.currentTarget) {
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clearSelectedClips();
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}
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};
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const handleWheel = (e: React.WheelEvent) => {
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@ -500,9 +587,33 @@ export function Timeline() {
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minHeight:
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tracks.length > 0 ? `${tracks.length * 60}px` : "200px",
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}}
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onClick={handleTimelineClick}
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onClick={handleTimelineAreaClick}
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onMouseDown={handleTimelineMouseDown}
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onWheel={handleWheel}
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>
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{/* Overlay for deselect/marquee */}
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<div
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className="absolute inset-0 z-0"
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style={{ pointerEvents: 'auto', background: 'transparent' }}
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onClick={handleTimelineAreaClick}
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onMouseDown={handleTimelineMouseDown}
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/>
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{/* Marquee selection rectangle */}
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{marquee && marquee.active && timelineRef.current && (
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<div
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style={{
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position: "absolute",
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left: Math.min(marquee.startX, marquee.endX) - timelineRef.current.getBoundingClientRect().left,
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top: Math.min(marquee.startY, marquee.endY) - timelineRef.current.getBoundingClientRect().top,
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width: Math.abs(marquee.endX - marquee.startX),
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height: Math.abs(marquee.endY - marquee.startY),
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background: "rgba(59, 130, 246, 0.15)",
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border: "2px solid #3b82f6",
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zIndex: 50,
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pointerEvents: "none",
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}}
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/>
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)}
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{tracks.length === 0 ? (
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<div className="absolute inset-0 flex items-center justify-center">
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<div className="text-center">
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@ -711,8 +822,9 @@ function TimelineTrackContent({
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addClipToTrack,
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removeClipFromTrack,
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toggleTrackMute,
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selectedClip,
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selectedClips,
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selectClip,
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deselectClip,
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} = useTimelineStore();
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const { currentTime } = usePlaybackStore();
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const [isDropping, setIsDropping] = useState(false);
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@ -1274,10 +1386,9 @@ function TimelineTrackContent({
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effectiveDuration * 50 * zoomLevel
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);
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const clipLeft = clip.startTime * 50 * zoomLevel;
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// Correctly declare isSelected inside the map
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const isSelected = selectedClip && selectedClip.trackId === track.id && selectedClip.clipId === clip.id;
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const isSelected = selectedClips.some(
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(c) => c.trackId === track.id && c.clipId === clip.id
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);
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return (
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<div
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key={clip.id}
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@ -1285,7 +1396,13 @@ function TimelineTrackContent({
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style={{ width: `${clipWidth}px`, left: `${clipLeft}px` }}
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onClick={(e) => {
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e.stopPropagation();
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selectClip(track.id, clip.id);
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if (e.metaKey || e.ctrlKey || e.shiftKey) {
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selectClip(track.id, clip.id, true);
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} else if (isSelected) {
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deselectClip(track.id, clip.id);
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} else {
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selectClip(track.id, clip.id, false);
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}
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}}
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tabIndex={0}
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onContextMenu={(e) => {
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@ -21,10 +21,11 @@ export interface TimelineTrack {
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interface TimelineStore {
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tracks: TimelineTrack[];
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// Selection
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selectedClip: { trackId: string; clipId: string } | null;
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selectClip: (trackId: string, clipId: string) => void;
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clearSelectedClip: () => void;
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// Multi-selection
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selectedClips: { trackId: string; clipId: string }[];
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selectClip: (trackId: string, clipId: string, multi?: boolean) => void;
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deselectClip: (trackId: string, clipId: string) => void;
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clearSelectedClips: () => void;
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// Actions
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addTrack: (type: "video" | "audio" | "effects") => string;
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@ -55,13 +56,30 @@ interface TimelineStore {
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export const useTimelineStore = create<TimelineStore>((set, get) => ({
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tracks: [],
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selectedClip: null,
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selectedClips: [],
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selectClip: (trackId, clipId) => {
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set({ selectedClip: { trackId, clipId } });
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selectClip: (trackId, clipId, multi = false) => {
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set((state) => {
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const exists = state.selectedClips.some(
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(c) => c.trackId === trackId && c.clipId === clipId
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);
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if (multi) {
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// Toggle selection
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return exists
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? { selectedClips: state.selectedClips.filter((c) => !(c.trackId === trackId && c.clipId === clipId)) }
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: { selectedClips: [...state.selectedClips, { trackId, clipId }] };
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} else {
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return { selectedClips: [{ trackId, clipId }] };
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}
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});
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},
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clearSelectedClip: () => {
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set({ selectedClip: null });
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deselectClip: (trackId, clipId) => {
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set((state) => ({
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selectedClips: state.selectedClips.filter((c) => !(c.trackId === trackId && c.clipId === clipId)),
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}));
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},
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clearSelectedClips: () => {
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set({ selectedClips: [] });
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},
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addTrack: (type) => {
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