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-rw-r--r--apps/web/src/hooks/use-disable-browser-zoom.ts63
-rw-r--r--apps/web/src/hooks/use-timeline-element-resize.ts12
-rw-r--r--apps/web/src/hooks/use-timeline-playhead.ts202
-rw-r--r--apps/web/src/hooks/use-timeline-zoom.ts103
4 files changed, 160 insertions, 220 deletions
diff --git a/apps/web/src/hooks/use-disable-browser-zoom.ts b/apps/web/src/hooks/use-disable-browser-zoom.ts
deleted file mode 100644
index 9467cb71..00000000
--- a/apps/web/src/hooks/use-disable-browser-zoom.ts
+++ /dev/null
@@ -1,63 +0,0 @@
-import { useEffect } from "react";
-
-/**
- * useDisableBrowserZoom
- *
- * This React hook prevents users from zooming in/out the browser window using keyboard shortcuts,
- * mouse wheel, or gesture events (such as pinch-to-zoom on trackpads or touch devices).
- *
- * Typical use case: apps with fixed-size UIs, custom editors, or when zooming would break layout.
- *
- * NOTE: Disabling browser zoom may negatively affect accessibility and user experience.
- * Use with caution, especially for public-facing applications.
- */
-export const useDisableBrowserZoom = () => {
- useEffect(() => {
- /**
- * Prevents browser zoom when user holds Ctrl (or Cmd on Mac) and scrolls the mouse wheel.
- */
- const handleWheel = (e: WheelEvent) => {
- if (e.ctrlKey) {
- e.preventDefault();
- }
- };
-
- /**
- * Prevents browser zoom via keyboard shortcuts:
- * Ctrl/Cmd + '+', '-', '=', or '0' (reset zoom)
- * Some keyboards emit '=' for '+' (without Shift).
- */
- const handleKeyDown = (e: KeyboardEvent) => {
- if (e.ctrlKey) {
- const key = e.key;
- if (key === "+" || key === "-" || key === "0" || key === "=") {
- e.preventDefault();
- }
- }
- };
-
- /**
- * Prevents pinch-zoom gestures on supported browsers (mainly Safari/macOS/iOS).
- * gesturestart, gesturechange, and gestureend are non-standard and not supported everywhere.
- */
- const handleGesture = (e: Event) => {
- e.preventDefault();
- };
-
- // Attach event listeners (passive: false is required for preventDefault to work)
- window.addEventListener("wheel", handleWheel, { passive: false });
- window.addEventListener("keydown", handleKeyDown, { passive: false });
- window.addEventListener("gesturestart", handleGesture, { passive: false });
- window.addEventListener("gesturechange", handleGesture, { passive: false });
- window.addEventListener("gestureend", handleGesture, { passive: false });
-
- // Cleanup listeners on unmount to avoid memory leaks
- return () => {
- window.removeEventListener("wheel", handleWheel);
- window.removeEventListener("keydown", handleKeyDown);
- window.removeEventListener("gesturestart", handleGesture);
- window.removeEventListener("gesturechange", handleGesture);
- window.removeEventListener("gestureend", handleGesture);
- };
- }, []);
-};
diff --git a/apps/web/src/hooks/use-timeline-element-resize.ts b/apps/web/src/hooks/use-timeline-element-resize.ts
index 0e409977..63b566c2 100644
--- a/apps/web/src/hooks/use-timeline-element-resize.ts
+++ b/apps/web/src/hooks/use-timeline-element-resize.ts
@@ -1,6 +1,7 @@
import { useState, useEffect } from "react";
import { ResizeState, TimelineElement, TimelineTrack } from "@/types/timeline";
import { useMediaStore } from "@/stores/media-store";
+import { useTimelineStore } from "@/stores/timeline-store";
interface UseTimelineElementResizeProps {
element: TimelineElement;
@@ -28,6 +29,7 @@ export function useTimelineElementResize({
}: UseTimelineElementResizeProps) {
const [resizing, setResizing] = useState<ResizeState | null>(null);
const { mediaItems } = useMediaStore();
+ const { updateElementStartTime } = useTimelineStore();
// Set up document-level mouse listeners during resize (like proper drag behavior)
useEffect(() => {
@@ -100,12 +102,20 @@ export function useTimelineElementResize({
const deltaTime = deltaX / (50 * zoomLevel);
if (resizing.side === "left") {
- // Left resize - only trim within original duration
+ // Left resize - trim content AND move element position to the right
const maxAllowed = element.duration - resizing.initialTrimEnd - 0.1;
const calculated = resizing.initialTrimStart + deltaTime;
const newTrimStart = Math.max(0, Math.min(maxAllowed, calculated));
+ // Calculate how much the trim changed and update startTime accordingly
+ const trimDelta = newTrimStart - resizing.initialTrimStart;
+ const newStartTime = element.startTime + trimDelta;
+
+ // Update both trim and start time for proper left resize behavior
onUpdateTrim(track.id, element.id, newTrimStart, resizing.initialTrimEnd);
+
+ // Update startTime so element moves to the right when trimming from left
+ updateElementStartTime(track.id, element.id, newStartTime);
} else {
// Right resize - can extend duration for supported element types
const calculated = resizing.initialTrimEnd - deltaTime;
diff --git a/apps/web/src/hooks/use-timeline-playhead.ts b/apps/web/src/hooks/use-timeline-playhead.ts
index 9eb06485..9a82c23f 100644
--- a/apps/web/src/hooks/use-timeline-playhead.ts
+++ b/apps/web/src/hooks/use-timeline-playhead.ts
@@ -1,6 +1,6 @@
import { snapTimeToFrame } from "@/constants/timeline-constants";
import { useProjectStore } from "@/stores/project-store";
-import { useRef, useState, useCallback } from "react";
+import { useState, useEffect, useCallback } from "react";
interface UseTimelinePlayheadProps {
currentTime: number;
@@ -9,15 +9,10 @@ interface UseTimelinePlayheadProps {
seek: (time: number) => void;
rulerRef: React.RefObject<HTMLDivElement>;
rulerScrollRef: React.RefObject<HTMLDivElement>;
+ tracksScrollRef: React.RefObject<HTMLDivElement>;
+ playheadRef?: React.RefObject<HTMLDivElement>;
}
-/**
- * useTimelinePlayhead
- *
- * Custom hook to manage playhead (scrubbing) logic for a timeline editor.
- * Handles mouse interaction for timeline ruler, calculates time from mouse,
- * and enables smooth scrubbing without unnecessary re-renders.
- */
export function useTimelinePlayhead({
currentTime,
duration,
@@ -25,101 +20,138 @@ export function useTimelinePlayhead({
seek,
rulerRef,
rulerScrollRef,
+ tracksScrollRef,
+ playheadRef,
}: UseTimelinePlayheadProps) {
- // Get current project info (especially FPS) from global store
- const { activeProject } = useProjectStore();
+ // Playhead scrubbing state
+ const [isScrubbing, setIsScrubbing] = useState(false);
+ const [scrubTime, setScrubTime] = useState<number | null>(null);
- // Ref to track if currently scrubbing
- const isScrubbingRef = useRef(false);
+ // Ruler drag detection state
+ const [isDraggingRuler, setIsDraggingRuler] = useState(false);
+ const [hasDraggedRuler, setHasDraggedRuler] = useState(false);
- // Ref to hold the playhead time while scrubbing (does not trigger re-render)
- const scrubTimeRef = useRef<number | null>(null);
-
- // State to force re-render when scrubbing ends
- const [_, forceRerender] = useState(0);
-
- /**
- * Determines the actual playhead position:
- * - If scrubbing, use the value in scrubTimeRef
- * - Otherwise, use the currentTime (controlled by external state)
- */
const playheadPosition =
- isScrubbingRef.current && scrubTimeRef.current !== null
- ? scrubTimeRef.current
- : currentTime;
-
- /**
- * Calculate timeline time (in seconds) based on mouse X position.
- * - Gets bounding rect of the ruler
- * - Adjusts for scroll position if ruler is scrollable
- * - Converts X pixel offset to seconds using current zoom level
- * - Snaps to nearest frame using FPS
- */
- const getTimeFromMouse = useCallback(
- (e: MouseEvent | React.MouseEvent) => {
- const ruler = rulerRef.current;
- const scrollArea = rulerScrollRef.current?.querySelector(
- "[data-radix-scroll-area-viewport]"
- ) as HTMLElement;
-
- if (!ruler || !scrollArea) return 0;
+ isScrubbing && scrubTime !== null ? scrubTime : currentTime;
- const rect = ruler.getBoundingClientRect();
- const scrollLeft = scrollArea.scrollLeft;
- const x = e.clientX - rect.left + scrollLeft;
-
- // Calculate how many pixels represent one second, depending on zoom
- const pixelsPerSecond = 50 * zoomLevel;
- const rawTime = Math.max(0, Math.min(duration, x / pixelsPerSecond));
- const time = snapTimeToFrame(rawTime, activeProject?.fps || 30);
- return time;
+ // --- Playhead Scrubbing Handlers ---
+ const handlePlayheadMouseDown = useCallback(
+ (e: React.MouseEvent) => {
+ e.preventDefault();
+ e.stopPropagation(); // Prevent ruler drag from triggering
+ setIsScrubbing(true);
+ handleScrub(e);
},
- [rulerRef, rulerScrollRef, duration, zoomLevel, activeProject?.fps]
+ [duration, zoomLevel]
);
- /**
- * Handle mouse down event on the ruler:
- * - Starts scrubbing and updates playhead immediately
- * - Registers mousemove/mouseup events to allow scrubbing
- * - Updates time as mouse moves and seeks to new time
- * - Cleans up listeners and triggers re-render when scrubbing ends
- */
+ // Ruler mouse down handler
const handleRulerMouseDown = useCallback(
(e: React.MouseEvent) => {
+ // Only handle left mouse button
if (e.button !== 0) return;
- e.preventDefault();
- const time = getTimeFromMouse(e);
- isScrubbingRef.current = true;
- scrubTimeRef.current = time;
- seek(time);
+ // Don't interfere if clicking on the playhead itself
+ if (playheadRef?.current?.contains(e.target as Node)) return;
- // Mouse move handler: update playhead and seek to new time
- const onMouseMove = (e: MouseEvent) => {
- const t = getTimeFromMouse(e);
- if (t !== scrubTimeRef.current) {
- scrubTimeRef.current = t;
- seek(t);
- }
- };
+ e.preventDefault();
+ setIsDraggingRuler(true);
+ setHasDraggedRuler(false);
- // Mouse up handler: stop scrubbing, cleanup, and force re-render
- const onMouseUp = () => {
- isScrubbingRef.current = false;
- window.removeEventListener("mousemove", onMouseMove);
- window.removeEventListener("mouseup", onMouseUp);
- forceRerender((v) => v + 1);
- };
+ // Start scrubbing immediately
+ setIsScrubbing(true);
+ handleScrub(e);
+ },
+ [duration, zoomLevel]
+ );
- // Attach listeners to window for drag outside the ruler area
- window.addEventListener("mousemove", onMouseMove);
- window.addEventListener("mouseup", onMouseUp);
+ 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
},
- [getTimeFromMouse, seek]
+ [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, // Current playhead position (real-time while scrubbing)
- handleRulerMouseDown, // Attach to the ruler's onMouseDown
+ playheadPosition,
+ handlePlayheadMouseDown,
+ handleRulerMouseDown,
+ isDraggingRuler,
};
}
diff --git a/apps/web/src/hooks/use-timeline-zoom.ts b/apps/web/src/hooks/use-timeline-zoom.ts
index c8780f9a..ce32c9f0 100644
--- a/apps/web/src/hooks/use-timeline-zoom.ts
+++ b/apps/web/src/hooks/use-timeline-zoom.ts
@@ -1,5 +1,4 @@
-import { TIMELINE_CONSTANTS } from "@/constants/timeline-constants";
-import { useState, useCallback, RefObject, useMemo } from "react";
+import { useState, useCallback, useEffect, RefObject } from "react";
interface UseTimelineZoomProps {
containerRef: RefObject<HTMLDivElement>;
@@ -8,86 +7,48 @@ interface UseTimelineZoomProps {
interface UseTimelineZoomReturn {
zoomLevel: number;
- zoomStep: number;
setZoomLevel: (zoomLevel: number | ((prev: number) => number)) => void;
- handleChangeZoomStep: (zoomStep: number) => void;
- handleChangeZoomLevel: (zoomStep: number) => void;
handleWheel: (e: React.WheelEvent) => void;
}
-/**
- * useTimelineZoom
- *
- * Custom hook to manage zoom logic for a timeline component.
- * Handles zoom state, step calculation, level changes, and mouse wheel zooming (with ctrl/meta).
- */
-export function useTimelineZoom(): UseTimelineZoomReturn {
- // Current zoom level (1 = default)
+export function useTimelineZoom({
+ containerRef,
+ isInTimeline = false,
+}: UseTimelineZoomProps): UseTimelineZoomReturn {
const [zoomLevel, setZoomLevel] = useState(1);
- /**
- * Calculate the current zoom step based on the zoom level and a base step constant.
- * Ensures minimum step is 1 (prevents zero or negative step).
- */
- const zoomStep = useMemo(
- () =>
- Math.max(1, Math.round(zoomLevel / TIMELINE_CONSTANTS.ZOOM_STEP_BASE)),
- [zoomLevel]
- );
-
- /**
- * Update the zoom level using a given step.
- * The zoom level is clamped to a minimum value defined in constants.
- */
- const handleChangeZoomStep = useCallback((newStep: number) => {
- setZoomLevel(
- Math.max(
- TIMELINE_CONSTANTS.ZOOM_LEVEL_MIN,
- newStep * TIMELINE_CONSTANTS.ZOOM_STEP_BASE
- )
- );
- }, []);
-
- /**
- * Update the zoom level directly.
- * The new value is clamped between the defined minimum and maximum levels.
- */
- const handleChangeZoomLevel = useCallback((newLevel: number) => {
- setZoomLevel(
- Math.max(
- TIMELINE_CONSTANTS.ZOOM_LEVEL_MIN,
- Math.min(TIMELINE_CONSTANTS.ZOOM_LEVEL_MAX, newLevel)
- )
- );
- }, []);
-
- /**
- * Handle zooming using mouse wheel + ctrl/meta key (like browser zoom).
- * Prevents default browser behavior and updates zoom level accordingly.
- */
const handleWheel = useCallback((e: React.WheelEvent) => {
+ // Only zoom if user is using pinch gesture (ctrlKey or metaKey is true)
if (e.ctrlKey || e.metaKey) {
- e.preventDefault?.();
- const delta =
- e.deltaY > 0
- ? -TIMELINE_CONSTANTS.ZOOM_STEP_BASE
- : TIMELINE_CONSTANTS.ZOOM_STEP_BASE;
- setZoomLevel((prev) =>
- Math.max(
- TIMELINE_CONSTANTS.ZOOM_LEVEL_MIN,
- Math.min(TIMELINE_CONSTANTS.ZOOM_LEVEL_MAX, prev + delta)
- )
- );
+ e.preventDefault();
+ const delta = e.deltaY > 0 ? -0.15 : 0.15;
+ setZoomLevel((prev) => Math.max(0.1, Math.min(10, prev + delta)));
}
+ // Otherwise, allow normal scrolling
}, []);
- // Return all handlers and state values for use in timeline components
+ // Prevent browser zooming in/out when in timeline
+ useEffect(() => {
+ const preventZoom = (e: WheelEvent) => {
+ if (
+ isInTimeline &&
+ (e.ctrlKey || e.metaKey) &&
+ containerRef.current?.contains(e.target as Node)
+ ) {
+ e.preventDefault();
+ }
+ };
+
+ document.addEventListener("wheel", preventZoom, { passive: false });
+
+ return () => {
+ document.removeEventListener("wheel", preventZoom);
+ };
+ }, [isInTimeline, containerRef]);
+
return {
- zoomLevel, // Current zoom level
- zoomStep, // Current zoom step (calculated from zoomLevel)
- setZoomLevel, // Directly set the zoom level (accepts value or updater function)
- handleChangeZoomStep, // Change zoom by step value
- handleChangeZoomLevel, // Change zoom by level value
- handleWheel, // Handler for mouse wheel zooming
+ zoomLevel,
+ setZoomLevel,
+ handleWheel,
};
}
generated by cgit v1.3.1 (git 2.54.0) at 2026-10-26 13:34:15 +0000