944 lines
32 KiB
TypeScript
944 lines
32 KiB
TypeScript
"use client";
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import { useRef, useState, useEffect } from "react";
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import { useTimelineStore } from "@/stores/timeline-store";
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import { useMediaStore } from "@/stores/media-store";
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import { toast } from "sonner";
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import { TimelineElement } from "./timeline-element";
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import {
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TimelineTrack,
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sortTracksByOrder,
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ensureMainTrack,
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getMainTrack,
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canElementGoOnTrack,
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} from "@/types/timeline";
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import { usePlaybackStore } from "@/stores/playback-store";
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import type {
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TimelineElement as TimelineElementType,
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DragData,
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} from "@/types/timeline";
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import { TIMELINE_CONSTANTS } from "@/constants/timeline-constants";
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export function TimelineTrackContent({
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track,
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zoomLevel,
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}: {
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track: TimelineTrack;
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zoomLevel: number;
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}) {
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const { mediaItems } = useMediaStore();
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const {
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tracks,
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moveElementToTrack,
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updateElementStartTime,
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addElementToTrack,
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selectedElements,
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selectElement,
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dragState,
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startDrag: startDragAction,
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updateDragTime,
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endDrag: endDragAction,
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clearSelectedElements,
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insertTrackAt,
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} = useTimelineStore();
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const timelineRef = useRef<HTMLDivElement>(null);
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const [isDropping, setIsDropping] = useState(false);
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const [dropPosition, setDropPosition] = useState<number | null>(null);
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const [wouldOverlap, setWouldOverlap] = useState(false);
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const dragCounterRef = useRef(0);
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const [mouseDownLocation, setMouseDownLocation] = useState<{
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x: number;
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y: number;
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} | null>(null);
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// Set up mouse event listeners for drag
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useEffect(() => {
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if (!dragState.isDragging) return;
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const handleMouseMove = (e: MouseEvent) => {
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if (!timelineRef.current) return;
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// On first mouse move during drag, ensure the element is selected
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if (dragState.elementId && dragState.trackId) {
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const isSelected = selectedElements.some(
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(c) =>
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c.trackId === dragState.trackId &&
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c.elementId === dragState.elementId
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);
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if (!isSelected) {
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// Select this element (replacing other selections) since we're dragging it
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selectElement(dragState.trackId, dragState.elementId, false);
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}
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}
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const timelineRect = timelineRef.current.getBoundingClientRect();
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const mouseX = e.clientX - timelineRect.left;
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const mouseTime = Math.max(
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0,
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mouseX / (TIMELINE_CONSTANTS.PIXELS_PER_SECOND * zoomLevel)
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);
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const adjustedTime = Math.max(0, mouseTime - dragState.clickOffsetTime);
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const snappedTime = Math.round(adjustedTime * 10) / 10;
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updateDragTime(snappedTime);
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};
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const handleMouseUp = (e: MouseEvent) => {
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if (!dragState.elementId || !dragState.trackId) return;
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// If this track initiated the drag, we should handle the mouse up regardless of where it occurs
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const isTrackThatStartedDrag = dragState.trackId === track.id;
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const timelineRect = timelineRef.current?.getBoundingClientRect();
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if (!timelineRect) {
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if (isTrackThatStartedDrag) {
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updateElementStartTime(
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track.id,
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dragState.elementId,
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dragState.currentTime
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);
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endDragAction();
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}
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return;
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}
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const isMouseOverThisTrack =
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e.clientY >= timelineRect.top && e.clientY <= timelineRect.bottom;
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if (!isMouseOverThisTrack && !isTrackThatStartedDrag) return;
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const finalTime = dragState.currentTime;
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if (isMouseOverThisTrack) {
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const sourceTrack = tracks.find((t) => t.id === dragState.trackId);
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const movingElement = sourceTrack?.elements.find(
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(c) => c.id === dragState.elementId
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);
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if (movingElement) {
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const movingElementDuration =
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movingElement.duration -
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movingElement.trimStart -
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movingElement.trimEnd;
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const movingElementEnd = finalTime + movingElementDuration;
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const targetTrack = tracks.find((t) => t.id === track.id);
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const hasOverlap = targetTrack?.elements.some((existingElement) => {
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if (
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dragState.trackId === track.id &&
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existingElement.id === dragState.elementId
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) {
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return false;
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}
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const existingStart = existingElement.startTime;
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const existingEnd =
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existingElement.startTime +
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(existingElement.duration -
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existingElement.trimStart -
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existingElement.trimEnd);
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return finalTime < existingEnd && movingElementEnd > existingStart;
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});
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if (!hasOverlap) {
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if (dragState.trackId === track.id) {
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updateElementStartTime(track.id, dragState.elementId, finalTime);
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} else {
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moveElementToTrack(
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dragState.trackId,
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track.id,
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dragState.elementId
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);
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requestAnimationFrame(() => {
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updateElementStartTime(
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track.id,
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dragState.elementId!,
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finalTime
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);
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});
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}
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}
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}
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} else if (isTrackThatStartedDrag) {
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// Mouse is not over this track, but this track started the drag
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// This means user released over ruler/outside - update position within same track
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const sourceTrack = tracks.find((t) => t.id === dragState.trackId);
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const movingElement = sourceTrack?.elements.find(
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(c) => c.id === dragState.elementId
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);
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if (movingElement) {
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const movingElementDuration =
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movingElement.duration -
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movingElement.trimStart -
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movingElement.trimEnd;
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const movingElementEnd = finalTime + movingElementDuration;
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const hasOverlap = track.elements.some((existingElement) => {
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if (existingElement.id === dragState.elementId) {
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return false;
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}
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const existingStart = existingElement.startTime;
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const existingEnd =
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existingElement.startTime +
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(existingElement.duration -
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existingElement.trimStart -
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existingElement.trimEnd);
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return finalTime < existingEnd && movingElementEnd > existingStart;
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});
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if (!hasOverlap) {
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updateElementStartTime(track.id, dragState.elementId, finalTime);
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}
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}
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}
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if (isTrackThatStartedDrag) {
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endDragAction();
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}
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};
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document.addEventListener("mousemove", handleMouseMove);
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document.addEventListener("mouseup", handleMouseUp);
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return () => {
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document.removeEventListener("mousemove", handleMouseMove);
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document.removeEventListener("mouseup", handleMouseUp);
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};
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}, [
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dragState.isDragging,
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dragState.clickOffsetTime,
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dragState.elementId,
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dragState.trackId,
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dragState.currentTime,
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zoomLevel,
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tracks,
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track.id,
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updateDragTime,
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updateElementStartTime,
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moveElementToTrack,
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endDragAction,
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selectedElements,
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selectElement,
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]);
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const handleElementMouseDown = (
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e: React.MouseEvent,
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element: TimelineElementType
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) => {
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setMouseDownLocation({ x: e.clientX, y: e.clientY });
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// Detect right-click (button 2) and handle selection without starting drag
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const isRightClick = e.button === 2;
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const isMultiSelect = e.metaKey || e.ctrlKey || e.shiftKey;
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if (isRightClick) {
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// Handle right-click selection
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const isSelected = selectedElements.some(
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(c) => c.trackId === track.id && c.elementId === element.id
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);
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// If element is not selected, select it (keep other selections if multi-select)
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if (!isSelected) {
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selectElement(track.id, element.id, isMultiSelect);
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}
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// If element is already selected, keep it selected
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// Don't start drag action for right-clicks
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return;
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}
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// Handle multi-selection for left-click with modifiers
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if (isMultiSelect) {
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selectElement(track.id, element.id, true);
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}
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// Calculate the offset from the left edge of the element to where the user clicked
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const elementElement = e.currentTarget as HTMLElement;
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const elementRect = elementElement.getBoundingClientRect();
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const clickOffsetX = e.clientX - elementRect.left;
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const clickOffsetTime =
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clickOffsetX / (TIMELINE_CONSTANTS.PIXELS_PER_SECOND * zoomLevel);
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startDragAction(
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element.id,
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track.id,
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e.clientX,
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element.startTime,
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clickOffsetTime
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);
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};
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const handleElementClick = (
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e: React.MouseEvent,
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element: TimelineElementType
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) => {
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e.stopPropagation();
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// Check if mouse moved significantly
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if (mouseDownLocation) {
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const deltaX = Math.abs(e.clientX - mouseDownLocation.x);
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const deltaY = Math.abs(e.clientY - mouseDownLocation.y);
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// If it moved more than a few pixels, consider it a drag and not a click.
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if (deltaX > 5 || deltaY > 5) {
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setMouseDownLocation(null); // Reset for next interaction
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return;
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}
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}
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// Skip selection logic for multi-selection (handled in mousedown)
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if (e.metaKey || e.ctrlKey || e.shiftKey) {
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return;
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}
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// Handle single selection
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const isSelected = selectedElements.some(
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(c) => c.trackId === track.id && c.elementId === element.id
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);
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if (!isSelected) {
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// If element is not selected, select it (replacing other selections)
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selectElement(track.id, element.id, false);
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}
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// If element is already selected, keep it selected (do nothing)
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};
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const handleTrackDragOver = (e: React.DragEvent) => {
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e.preventDefault();
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// Handle both timeline elements and media items
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const hasTimelineElement = e.dataTransfer.types.includes(
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"application/x-timeline-element"
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);
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const hasMediaItem = e.dataTransfer.types.includes(
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"application/x-media-item"
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);
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if (!hasTimelineElement && !hasMediaItem) return;
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// Calculate drop position for overlap checking
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const trackContainer = e.currentTarget.querySelector(
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".track-elements-container"
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) as HTMLElement;
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let dropTime = 0;
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if (trackContainer) {
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const rect = trackContainer.getBoundingClientRect();
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const mouseX = Math.max(0, e.clientX - rect.left);
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dropTime = mouseX / (TIMELINE_CONSTANTS.PIXELS_PER_SECOND * zoomLevel);
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}
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// Check for potential overlaps and show appropriate feedback
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let wouldOverlap = false;
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if (hasMediaItem) {
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try {
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const mediaItemData = e.dataTransfer.getData(
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"application/x-media-item"
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);
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if (mediaItemData) {
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const dragData: DragData = JSON.parse(mediaItemData);
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if (dragData.type === "text") {
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// Text elements have default duration of 5 seconds
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const newElementDuration = 5;
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const snappedTime = Math.round(dropTime * 10) / 10;
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const newElementEnd = snappedTime + newElementDuration;
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wouldOverlap = track.elements.some((existingElement) => {
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const existingStart = existingElement.startTime;
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const existingEnd =
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existingElement.startTime +
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(existingElement.duration -
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existingElement.trimStart -
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existingElement.trimEnd);
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return snappedTime < existingEnd && newElementEnd > existingStart;
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});
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} else {
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// Media elements
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const mediaItem = mediaItems.find(
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(item) => item.id === dragData.id
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);
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if (mediaItem) {
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const newElementDuration = mediaItem.duration || 5;
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const snappedTime = Math.round(dropTime * 10) / 10;
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const newElementEnd = snappedTime + newElementDuration;
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wouldOverlap = track.elements.some((existingElement) => {
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const existingStart = existingElement.startTime;
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const existingEnd =
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existingElement.startTime +
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(existingElement.duration -
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existingElement.trimStart -
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existingElement.trimEnd);
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return (
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snappedTime < existingEnd && newElementEnd > existingStart
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);
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});
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}
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}
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}
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} catch (error) {
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// Continue with default behavior
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}
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} else if (hasTimelineElement) {
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try {
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const timelineElementData = e.dataTransfer.getData(
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"application/x-timeline-element"
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);
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if (timelineElementData) {
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const { elementId, trackId: fromTrackId } =
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JSON.parse(timelineElementData);
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const sourceTrack = tracks.find(
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(t: TimelineTrack) => t.id === fromTrackId
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);
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const movingElement = sourceTrack?.elements.find(
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(c: any) => c.id === elementId
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);
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if (movingElement) {
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const movingElementDuration =
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movingElement.duration -
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movingElement.trimStart -
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movingElement.trimEnd;
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const snappedTime = Math.round(dropTime * 10) / 10;
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const movingElementEnd = snappedTime + movingElementDuration;
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wouldOverlap = track.elements.some((existingElement) => {
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if (fromTrackId === track.id && existingElement.id === elementId)
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return false;
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const existingStart = existingElement.startTime;
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const existingEnd =
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existingElement.startTime +
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(existingElement.duration -
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existingElement.trimStart -
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existingElement.trimEnd);
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return (
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snappedTime < existingEnd && movingElementEnd > existingStart
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);
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});
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}
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}
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} catch (error) {
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// Continue with default behavior
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}
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}
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if (wouldOverlap) {
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e.dataTransfer.dropEffect = "none";
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setWouldOverlap(true);
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setDropPosition(Math.round(dropTime * 10) / 10);
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return;
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}
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e.dataTransfer.dropEffect = hasTimelineElement ? "move" : "copy";
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setWouldOverlap(false);
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setDropPosition(Math.round(dropTime * 10) / 10);
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};
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const handleTrackDragEnter = (e: React.DragEvent) => {
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e.preventDefault();
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const hasTimelineElement = e.dataTransfer.types.includes(
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"application/x-timeline-element"
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);
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const hasMediaItem = e.dataTransfer.types.includes(
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"application/x-media-item"
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);
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if (!hasTimelineElement && !hasMediaItem) return;
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dragCounterRef.current++;
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setIsDropping(true);
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};
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const handleTrackDragLeave = (e: React.DragEvent) => {
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e.preventDefault();
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const hasTimelineElement = e.dataTransfer.types.includes(
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"application/x-timeline-element"
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);
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const hasMediaItem = e.dataTransfer.types.includes(
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"application/x-media-item"
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);
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if (!hasTimelineElement && !hasMediaItem) return;
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dragCounterRef.current--;
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if (dragCounterRef.current === 0) {
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setIsDropping(false);
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setWouldOverlap(false);
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setDropPosition(null);
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}
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};
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const handleTrackDrop = (e: React.DragEvent) => {
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e.preventDefault();
|
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e.stopPropagation();
|
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// Reset all drag states
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dragCounterRef.current = 0;
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setIsDropping(false);
|
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setWouldOverlap(false);
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const hasTimelineElement = e.dataTransfer.types.includes(
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"application/x-timeline-element"
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);
|
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const hasMediaItem = e.dataTransfer.types.includes(
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"application/x-media-item"
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);
|
|
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if (!hasTimelineElement && !hasMediaItem) return;
|
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const trackContainer = e.currentTarget.querySelector(
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".track-elements-container"
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) as HTMLElement;
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if (!trackContainer) return;
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const rect = trackContainer.getBoundingClientRect();
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const mouseX = Math.max(0, e.clientX - rect.left);
|
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const mouseY = e.clientY - rect.top; // Get Y position relative to this track
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const newStartTime =
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mouseX / (TIMELINE_CONSTANTS.PIXELS_PER_SECOND * zoomLevel);
|
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const snappedTime = Math.round(newStartTime * 10) / 10;
|
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|
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// Calculate drop position relative to tracks
|
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const currentTrackIndex = tracks.findIndex((t) => t.id === track.id);
|
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// Determine drop zone within the track (top 20px, middle 20px, bottom 20px)
|
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let dropPosition: "above" | "on" | "below";
|
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if (mouseY < 20) {
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dropPosition = "above";
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} else if (mouseY > 40) {
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dropPosition = "below";
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} else {
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dropPosition = "on";
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}
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try {
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if (hasTimelineElement) {
|
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// Handle timeline element movement
|
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const timelineElementData = e.dataTransfer.getData(
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"application/x-timeline-element"
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);
|
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if (!timelineElementData) return;
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const {
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elementId,
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trackId: fromTrackId,
|
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clickOffsetTime = 0,
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} = JSON.parse(timelineElementData);
|
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|
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// Find the element being moved
|
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const sourceTrack = tracks.find(
|
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(t: TimelineTrack) => t.id === fromTrackId
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);
|
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const movingElement = sourceTrack?.elements.find(
|
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(c: TimelineElementType) => c.id === elementId
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);
|
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|
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if (!movingElement) {
|
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toast.error("Element not found");
|
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return;
|
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}
|
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|
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// Adjust position based on where user clicked on the element
|
|
const adjustedStartTime = snappedTime - clickOffsetTime;
|
|
const finalStartTime = Math.max(
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0,
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Math.round(adjustedStartTime * 10) / 10
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);
|
|
|
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// Check for overlaps with existing elements (excluding the moving element itself)
|
|
const movingElementDuration =
|
|
movingElement.duration -
|
|
movingElement.trimStart -
|
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movingElement.trimEnd;
|
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const movingElementEnd = finalStartTime + movingElementDuration;
|
|
|
|
const hasOverlap = track.elements.some((existingElement) => {
|
|
// Skip the element being moved if it's on the same track
|
|
if (fromTrackId === track.id && existingElement.id === elementId)
|
|
return false;
|
|
|
|
const existingStart = existingElement.startTime;
|
|
const existingEnd =
|
|
existingElement.startTime +
|
|
(existingElement.duration -
|
|
existingElement.trimStart -
|
|
existingElement.trimEnd);
|
|
|
|
// Check if elements overlap
|
|
return (
|
|
finalStartTime < existingEnd && movingElementEnd > existingStart
|
|
);
|
|
});
|
|
|
|
if (hasOverlap) {
|
|
toast.error(
|
|
"Cannot move element here - it would overlap with existing elements"
|
|
);
|
|
return;
|
|
}
|
|
|
|
if (fromTrackId === track.id) {
|
|
// Moving within same track
|
|
updateElementStartTime(track.id, elementId, finalStartTime);
|
|
} else {
|
|
// Moving to different track
|
|
moveElementToTrack(fromTrackId, track.id, elementId);
|
|
requestAnimationFrame(() => {
|
|
updateElementStartTime(track.id, elementId, finalStartTime);
|
|
});
|
|
}
|
|
} else if (hasMediaItem) {
|
|
// Handle media item drop
|
|
const mediaItemData = e.dataTransfer.getData(
|
|
"application/x-media-item"
|
|
);
|
|
if (!mediaItemData) return;
|
|
|
|
const dragData: DragData = JSON.parse(mediaItemData);
|
|
|
|
if (dragData.type === "text") {
|
|
let targetTrackId = track.id;
|
|
let targetTrack = track;
|
|
|
|
// Handle position-aware track creation for text
|
|
if (track.type !== "text" || dropPosition !== "on") {
|
|
// Text tracks should go above the main track
|
|
const mainTrack = getMainTrack(tracks);
|
|
let insertIndex: number;
|
|
|
|
if (dropPosition === "above") {
|
|
insertIndex = currentTrackIndex;
|
|
} else if (dropPosition === "below") {
|
|
insertIndex = currentTrackIndex + 1;
|
|
} else {
|
|
// dropPosition === "on" but track is not text type
|
|
// Insert above main track if main track exists, otherwise at top
|
|
if (mainTrack) {
|
|
const mainTrackIndex = tracks.findIndex(
|
|
(t) => t.id === mainTrack.id
|
|
);
|
|
insertIndex = mainTrackIndex;
|
|
} else {
|
|
insertIndex = 0; // Top of timeline
|
|
}
|
|
}
|
|
|
|
targetTrackId = insertTrackAt("text", insertIndex);
|
|
// Get the updated tracks array after creating the new track
|
|
const updatedTracks = useTimelineStore.getState().tracks;
|
|
const newTargetTrack = updatedTracks.find(
|
|
(t) => t.id === targetTrackId
|
|
);
|
|
if (!newTargetTrack) return;
|
|
targetTrack = newTargetTrack;
|
|
}
|
|
|
|
// Check for overlaps with existing elements in target track
|
|
const newElementDuration = 5; // Default text duration
|
|
const newElementEnd = snappedTime + newElementDuration;
|
|
|
|
const hasOverlap = targetTrack.elements.some((existingElement) => {
|
|
const existingStart = existingElement.startTime;
|
|
const existingEnd =
|
|
existingElement.startTime +
|
|
(existingElement.duration -
|
|
existingElement.trimStart -
|
|
existingElement.trimEnd);
|
|
|
|
// Check if elements overlap
|
|
return snappedTime < existingEnd && newElementEnd > existingStart;
|
|
});
|
|
|
|
if (hasOverlap) {
|
|
toast.error(
|
|
"Cannot place element here - it would overlap with existing elements"
|
|
);
|
|
return;
|
|
}
|
|
|
|
addElementToTrack(targetTrackId, {
|
|
type: "text",
|
|
name: dragData.name || "Text",
|
|
content: dragData.content || "Default Text",
|
|
duration: TIMELINE_CONSTANTS.DEFAULT_TEXT_DURATION,
|
|
startTime: snappedTime,
|
|
trimStart: 0,
|
|
trimEnd: 0,
|
|
fontSize: 48,
|
|
fontFamily: "Arial",
|
|
color: "#ffffff",
|
|
backgroundColor: "transparent",
|
|
textAlign: "center",
|
|
fontWeight: "normal",
|
|
fontStyle: "normal",
|
|
textDecoration: "none",
|
|
x: 0,
|
|
y: 0,
|
|
rotation: 0,
|
|
opacity: 1,
|
|
});
|
|
} else {
|
|
// Handle media items
|
|
const mediaItem = mediaItems.find((item) => item.id === dragData.id);
|
|
|
|
if (!mediaItem) {
|
|
toast.error("Media item not found");
|
|
return;
|
|
}
|
|
|
|
let targetTrackId = track.id;
|
|
|
|
// Check if track type is compatible
|
|
const isVideoOrImage =
|
|
dragData.type === "video" || dragData.type === "image";
|
|
const isAudio = dragData.type === "audio";
|
|
const isCompatible = isVideoOrImage
|
|
? canElementGoOnTrack("media", track.type)
|
|
: isAudio
|
|
? canElementGoOnTrack("media", track.type)
|
|
: false;
|
|
|
|
let targetTrack = tracks.find((t) => t.id === targetTrackId);
|
|
|
|
// Handle position-aware track creation for media elements
|
|
if (!isCompatible || dropPosition !== "on") {
|
|
const needsNewTrack = !isCompatible || dropPosition !== "on";
|
|
|
|
if (needsNewTrack) {
|
|
if (isVideoOrImage) {
|
|
// For video/image, check if we need a main track or additional media track
|
|
const mainTrack = getMainTrack(tracks);
|
|
|
|
if (!mainTrack) {
|
|
// No main track exists, create it
|
|
const updatedTracks = ensureMainTrack(tracks);
|
|
const newMainTrack = getMainTrack(updatedTracks);
|
|
if (newMainTrack && newMainTrack.elements.length === 0) {
|
|
targetTrackId = newMainTrack.id;
|
|
targetTrack = newMainTrack;
|
|
} else {
|
|
// Main track was created but somehow has elements, create new media track
|
|
const mainTrackIndex = updatedTracks.findIndex(
|
|
(t) => t.id === newMainTrack?.id
|
|
);
|
|
targetTrackId = insertTrackAt("media", mainTrackIndex);
|
|
const updatedTracksAfterInsert =
|
|
useTimelineStore.getState().tracks;
|
|
const newTargetTrack = updatedTracksAfterInsert.find(
|
|
(t) => t.id === targetTrackId
|
|
);
|
|
if (!newTargetTrack) return;
|
|
targetTrack = newTargetTrack;
|
|
}
|
|
} else if (
|
|
mainTrack.elements.length === 0 &&
|
|
dropPosition === "on"
|
|
) {
|
|
// Main track exists and is empty, use it
|
|
targetTrackId = mainTrack.id;
|
|
targetTrack = mainTrack;
|
|
} else {
|
|
// Create new media track above main track
|
|
const mainTrackIndex = tracks.findIndex(
|
|
(t) => t.id === mainTrack.id
|
|
);
|
|
let insertIndex: number;
|
|
|
|
if (dropPosition === "above") {
|
|
insertIndex = currentTrackIndex;
|
|
} else if (dropPosition === "below") {
|
|
insertIndex = currentTrackIndex + 1;
|
|
} else {
|
|
// Insert above main track
|
|
insertIndex = mainTrackIndex;
|
|
}
|
|
|
|
targetTrackId = insertTrackAt("media", insertIndex);
|
|
const updatedTracks = useTimelineStore.getState().tracks;
|
|
const newTargetTrack = updatedTracks.find(
|
|
(t) => t.id === targetTrackId
|
|
);
|
|
if (!newTargetTrack) return;
|
|
targetTrack = newTargetTrack;
|
|
}
|
|
} else if (isAudio) {
|
|
// Audio tracks go at the bottom
|
|
const mainTrack = getMainTrack(tracks);
|
|
let insertIndex: number;
|
|
|
|
if (dropPosition === "above") {
|
|
insertIndex = currentTrackIndex;
|
|
} else if (dropPosition === "below") {
|
|
insertIndex = currentTrackIndex + 1;
|
|
} else {
|
|
// Insert after main track (bottom area)
|
|
if (mainTrack) {
|
|
const mainTrackIndex = tracks.findIndex(
|
|
(t) => t.id === mainTrack.id
|
|
);
|
|
insertIndex = mainTrackIndex + 1;
|
|
} else {
|
|
insertIndex = tracks.length; // Bottom of timeline
|
|
}
|
|
}
|
|
|
|
targetTrackId = insertTrackAt("audio", insertIndex);
|
|
const updatedTracks = useTimelineStore.getState().tracks;
|
|
const newTargetTrack = updatedTracks.find(
|
|
(t) => t.id === targetTrackId
|
|
);
|
|
if (!newTargetTrack) return;
|
|
targetTrack = newTargetTrack;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!targetTrack) return;
|
|
|
|
// Check for overlaps with existing elements in target track
|
|
const newElementDuration = mediaItem.duration || 5;
|
|
const newElementEnd = snappedTime + newElementDuration;
|
|
|
|
const hasOverlap = targetTrack.elements.some((existingElement) => {
|
|
const existingStart = existingElement.startTime;
|
|
const existingEnd =
|
|
existingElement.startTime +
|
|
(existingElement.duration -
|
|
existingElement.trimStart -
|
|
existingElement.trimEnd);
|
|
|
|
// Check if elements overlap
|
|
return snappedTime < existingEnd && newElementEnd > existingStart;
|
|
});
|
|
|
|
if (hasOverlap) {
|
|
toast.error(
|
|
"Cannot place element here - it would overlap with existing elements"
|
|
);
|
|
return;
|
|
}
|
|
|
|
addElementToTrack(targetTrackId, {
|
|
type: "media",
|
|
mediaId: mediaItem.id,
|
|
name: mediaItem.name,
|
|
duration: mediaItem.duration || 5,
|
|
startTime: snappedTime,
|
|
trimStart: 0,
|
|
trimEnd: 0,
|
|
});
|
|
}
|
|
}
|
|
} catch (error) {
|
|
console.error("Error handling drop:", error);
|
|
toast.error("Failed to add media to track");
|
|
}
|
|
};
|
|
|
|
return (
|
|
<div
|
|
className="w-full h-full hover:bg-muted/20"
|
|
onClick={(e) => {
|
|
// If clicking empty area (not on an element), deselect all elements
|
|
if (!(e.target as HTMLElement).closest(".timeline-element")) {
|
|
clearSelectedElements();
|
|
}
|
|
}}
|
|
onDragOver={handleTrackDragOver}
|
|
onDragEnter={handleTrackDragEnter}
|
|
onDragLeave={handleTrackDragLeave}
|
|
onDrop={handleTrackDrop}
|
|
>
|
|
<div
|
|
ref={timelineRef}
|
|
className="h-full relative track-elements-container min-w-full"
|
|
>
|
|
{track.elements.length === 0 ? (
|
|
<div
|
|
className={`h-full w-full rounded-sm border-2 border-dashed flex items-center justify-center text-xs text-muted-foreground transition-colors ${
|
|
isDropping
|
|
? wouldOverlap
|
|
? "border-red-500 bg-red-500/10 text-red-600"
|
|
: "border-blue-500 bg-blue-500/10 text-blue-600"
|
|
: "border-muted/30"
|
|
}`}
|
|
>
|
|
{isDropping
|
|
? wouldOverlap
|
|
? "Cannot drop - would overlap"
|
|
: "Drop element here"
|
|
: ""}
|
|
</div>
|
|
) : (
|
|
<>
|
|
{track.elements.map((element) => {
|
|
const isSelected = selectedElements.some(
|
|
(c) => c.trackId === track.id && c.elementId === element.id
|
|
);
|
|
|
|
const handleElementSplit = () => {
|
|
const { currentTime } = usePlaybackStore();
|
|
const { splitElement } = useTimelineStore();
|
|
const splitTime = currentTime;
|
|
const effectiveStart = element.startTime;
|
|
const effectiveEnd =
|
|
element.startTime +
|
|
(element.duration - element.trimStart - element.trimEnd);
|
|
|
|
if (splitTime > effectiveStart && splitTime < effectiveEnd) {
|
|
const secondElementId = splitElement(
|
|
track.id,
|
|
element.id,
|
|
splitTime
|
|
);
|
|
if (!secondElementId) {
|
|
toast.error("Failed to split element");
|
|
}
|
|
} else {
|
|
toast.error("Playhead must be within element to split");
|
|
}
|
|
};
|
|
|
|
const handleElementDuplicate = () => {
|
|
const { addElementToTrack } = useTimelineStore.getState();
|
|
const { id, ...elementWithoutId } = element;
|
|
addElementToTrack(track.id, {
|
|
...elementWithoutId,
|
|
name: element.name + " (copy)",
|
|
startTime:
|
|
element.startTime +
|
|
(element.duration - element.trimStart - element.trimEnd) +
|
|
0.1,
|
|
});
|
|
};
|
|
|
|
const handleElementDelete = () => {
|
|
const { removeElementFromTrack } = useTimelineStore.getState();
|
|
removeElementFromTrack(track.id, element.id);
|
|
};
|
|
|
|
return (
|
|
<TimelineElement
|
|
key={element.id}
|
|
element={element}
|
|
track={track}
|
|
zoomLevel={zoomLevel}
|
|
isSelected={isSelected}
|
|
onElementMouseDown={handleElementMouseDown}
|
|
onElementClick={handleElementClick}
|
|
/>
|
|
);
|
|
})}
|
|
</>
|
|
)}
|
|
</div>
|
|
</div>
|
|
);
|
|
}
|