From 1ccacf6bb5db579cf6f343d9de57bce92d296f5f Mon Sep 17 00:00:00 2001 From: Kha Nguyen Date: Thu, 24 Jul 2025 17:00:49 -0500 Subject: merge main --- apps/web/src/hooks/use-timeline-playhead.ts | 314 ++++++++++++++-------------- 1 file changed, 157 insertions(+), 157 deletions(-) (limited to 'apps/web/src/hooks/use-timeline-playhead.ts') diff --git a/apps/web/src/hooks/use-timeline-playhead.ts b/apps/web/src/hooks/use-timeline-playhead.ts index 9a82c23f..008f61a4 100644 --- a/apps/web/src/hooks/use-timeline-playhead.ts +++ b/apps/web/src/hooks/use-timeline-playhead.ts @@ -1,157 +1,157 @@ -import { snapTimeToFrame } from "@/constants/timeline-constants"; -import { useProjectStore } from "@/stores/project-store"; -import { useState, useEffect, useCallback } from "react"; - -interface UseTimelinePlayheadProps { - currentTime: number; - duration: number; - zoomLevel: number; - seek: (time: number) => void; - rulerRef: React.RefObject; - rulerScrollRef: React.RefObject; - tracksScrollRef: React.RefObject; - playheadRef?: React.RefObject; -} - -export function useTimelinePlayhead({ - currentTime, - duration, - zoomLevel, - seek, - rulerRef, - rulerScrollRef, - tracksScrollRef, - playheadRef, -}: UseTimelinePlayheadProps) { - // Playhead scrubbing state - const [isScrubbing, setIsScrubbing] = useState(false); - const [scrubTime, setScrubTime] = useState(null); - - // Ruler drag detection state - const [isDraggingRuler, setIsDraggingRuler] = useState(false); - const [hasDraggedRuler, setHasDraggedRuler] = useState(false); - - const playheadPosition = - isScrubbing && scrubTime !== null ? scrubTime : currentTime; - - // --- Playhead Scrubbing Handlers --- - const handlePlayheadMouseDown = useCallback( - (e: React.MouseEvent) => { - e.preventDefault(); - e.stopPropagation(); // Prevent ruler drag from triggering - setIsScrubbing(true); - handleScrub(e); - }, - [duration, zoomLevel] - ); - - // Ruler mouse down handler - const handleRulerMouseDown = useCallback( - (e: React.MouseEvent) => { - // Only handle left mouse button - if (e.button !== 0) return; - - // Don't interfere if clicking on the playhead itself - if (playheadRef?.current?.contains(e.target as Node)) return; - - e.preventDefault(); - setIsDraggingRuler(true); - setHasDraggedRuler(false); - - // Start scrubbing immediately - setIsScrubbing(true); - handleScrub(e); - }, - [duration, zoomLevel] - ); - - const handleScrub = useCallback( - (e: MouseEvent | React.MouseEvent) => { - const ruler = rulerRef.current; - if (!ruler) return; - const rect = ruler.getBoundingClientRect(); - const x = e.clientX - rect.left; - const rawTime = Math.max(0, Math.min(duration, x / (50 * zoomLevel))); - // Use frame snapping for playhead scrubbing - const projectStore = useProjectStore.getState(); - const projectFps = projectStore.activeProject?.fps || 30; - const time = snapTimeToFrame(rawTime, projectFps); - setScrubTime(time); - seek(time); // update video preview in real time - }, - [duration, zoomLevel, seek, rulerRef] - ); - - // Mouse move/up event handlers - useEffect(() => { - if (!isScrubbing) return; - const onMouseMove = (e: MouseEvent) => { - handleScrub(e); - // Mark that we've dragged if ruler drag is active - if (isDraggingRuler) { - setHasDraggedRuler(true); - } - }; - const onMouseUp = (e: MouseEvent) => { - setIsScrubbing(false); - if (scrubTime !== null) seek(scrubTime); // finalize seek - setScrubTime(null); - - // Handle ruler click vs drag - if (isDraggingRuler) { - setIsDraggingRuler(false); - // If we didn't drag, treat it as a click-to-seek - if (!hasDraggedRuler) { - handleScrub(e); - } - setHasDraggedRuler(false); - } - }; - window.addEventListener("mousemove", onMouseMove); - window.addEventListener("mouseup", onMouseUp); - return () => { - window.removeEventListener("mousemove", onMouseMove); - window.removeEventListener("mouseup", onMouseUp); - }; - }, [ - isScrubbing, - scrubTime, - seek, - handleScrub, - isDraggingRuler, - hasDraggedRuler, - ]); - - // --- Playhead auto-scroll effect --- - useEffect(() => { - const rulerViewport = rulerScrollRef.current?.querySelector( - "[data-radix-scroll-area-viewport]" - ) as HTMLElement; - const tracksViewport = tracksScrollRef.current?.querySelector( - "[data-radix-scroll-area-viewport]" - ) as HTMLElement; - if (!rulerViewport || !tracksViewport) return; - const playheadPx = playheadPosition * 50 * zoomLevel; // TIMELINE_CONSTANTS.PIXELS_PER_SECOND = 50 - const viewportWidth = rulerViewport.clientWidth; - const scrollMin = 0; - const scrollMax = rulerViewport.scrollWidth - viewportWidth; - // Center the playhead if it's not visible (100px buffer) - const desiredScroll = Math.max( - scrollMin, - Math.min(scrollMax, playheadPx - viewportWidth / 2) - ); - if ( - playheadPx < rulerViewport.scrollLeft + 100 || - playheadPx > rulerViewport.scrollLeft + viewportWidth - 100 - ) { - rulerViewport.scrollLeft = tracksViewport.scrollLeft = desiredScroll; - } - }, [playheadPosition, duration, zoomLevel, rulerScrollRef, tracksScrollRef]); - - return { - playheadPosition, - handlePlayheadMouseDown, - handleRulerMouseDown, - isDraggingRuler, - }; -} +import { snapTimeToFrame } from "@/constants/timeline-constants"; +import { useProjectStore } from "@/stores/project-store"; +import { useState, useEffect, useCallback } from "react"; + +interface UseTimelinePlayheadProps { + currentTime: number; + duration: number; + zoomLevel: number; + seek: (time: number) => void; + rulerRef: React.RefObject; + rulerScrollRef: React.RefObject; + tracksScrollRef: React.RefObject; + playheadRef?: React.RefObject; +} + +export function useTimelinePlayhead({ + currentTime, + duration, + zoomLevel, + seek, + rulerRef, + rulerScrollRef, + tracksScrollRef, + playheadRef, +}: UseTimelinePlayheadProps) { + // Playhead scrubbing state + const [isScrubbing, setIsScrubbing] = useState(false); + const [scrubTime, setScrubTime] = useState(null); + + // Ruler drag detection state + const [isDraggingRuler, setIsDraggingRuler] = useState(false); + const [hasDraggedRuler, setHasDraggedRuler] = useState(false); + + const playheadPosition = + isScrubbing && scrubTime !== null ? scrubTime : currentTime; + + // --- Playhead Scrubbing Handlers --- + const handlePlayheadMouseDown = useCallback( + (e: React.MouseEvent) => { + e.preventDefault(); + e.stopPropagation(); // Prevent ruler drag from triggering + setIsScrubbing(true); + handleScrub(e); + }, + [duration, zoomLevel] + ); + + // Ruler mouse down handler + const handleRulerMouseDown = useCallback( + (e: React.MouseEvent) => { + // Only handle left mouse button + if (e.button !== 0) return; + + // Don't interfere if clicking on the playhead itself + if (playheadRef?.current?.contains(e.target as Node)) return; + + e.preventDefault(); + setIsDraggingRuler(true); + setHasDraggedRuler(false); + + // Start scrubbing immediately + setIsScrubbing(true); + handleScrub(e); + }, + [duration, zoomLevel] + ); + + const handleScrub = useCallback( + (e: MouseEvent | React.MouseEvent) => { + const ruler = rulerRef.current; + if (!ruler) return; + const rect = ruler.getBoundingClientRect(); + const x = e.clientX - rect.left; + const rawTime = Math.max(0, Math.min(duration, x / (50 * zoomLevel))); + // Use frame snapping for playhead scrubbing + const projectStore = useProjectStore.getState(); + const projectFps = projectStore.activeProject?.fps || 30; + const time = snapTimeToFrame(rawTime, projectFps); + setScrubTime(time); + seek(time); // update video preview in real time + }, + [duration, zoomLevel, seek, rulerRef] + ); + + // Mouse move/up event handlers + useEffect(() => { + if (!isScrubbing) return; + const onMouseMove = (e: MouseEvent) => { + handleScrub(e); + // Mark that we've dragged if ruler drag is active + if (isDraggingRuler) { + setHasDraggedRuler(true); + } + }; + const onMouseUp = (e: MouseEvent) => { + setIsScrubbing(false); + if (scrubTime !== null) seek(scrubTime); // finalize seek + setScrubTime(null); + + // Handle ruler click vs drag + if (isDraggingRuler) { + setIsDraggingRuler(false); + // If we didn't drag, treat it as a click-to-seek + if (!hasDraggedRuler) { + handleScrub(e); + } + setHasDraggedRuler(false); + } + }; + window.addEventListener("mousemove", onMouseMove); + window.addEventListener("mouseup", onMouseUp); + return () => { + window.removeEventListener("mousemove", onMouseMove); + window.removeEventListener("mouseup", onMouseUp); + }; + }, [ + isScrubbing, + scrubTime, + seek, + handleScrub, + isDraggingRuler, + hasDraggedRuler, + ]); + + // --- Playhead auto-scroll effect --- + useEffect(() => { + const rulerViewport = rulerScrollRef.current?.querySelector( + "[data-radix-scroll-area-viewport]" + ) as HTMLElement; + const tracksViewport = tracksScrollRef.current?.querySelector( + "[data-radix-scroll-area-viewport]" + ) as HTMLElement; + if (!rulerViewport || !tracksViewport) return; + const playheadPx = playheadPosition * 50 * zoomLevel; // TIMELINE_CONSTANTS.PIXELS_PER_SECOND = 50 + const viewportWidth = rulerViewport.clientWidth; + const scrollMin = 0; + const scrollMax = rulerViewport.scrollWidth - viewportWidth; + // Center the playhead if it's not visible (100px buffer) + const desiredScroll = Math.max( + scrollMin, + Math.min(scrollMax, playheadPx - viewportWidth / 2) + ); + if ( + playheadPx < rulerViewport.scrollLeft + 100 || + playheadPx > rulerViewport.scrollLeft + viewportWidth - 100 + ) { + rulerViewport.scrollLeft = tracksViewport.scrollLeft = desiredScroll; + } + }, [playheadPosition, duration, zoomLevel, rulerScrollRef, tracksScrollRef]); + + return { + playheadPosition, + handlePlayheadMouseDown, + handleRulerMouseDown, + isDraggingRuler, + }; +} -- cgit v1.3.1