1 files changed, 327 insertions, 327 deletions
diff --git a/apps/web/src/lib/preview/element-bounds.ts b/apps/web/src/lib/preview/element-bounds.ts
index 5c416afc..c8420467 100644
--- a/apps/web/src/lib/preview/element-bounds.ts
+++ b/apps/web/src/lib/preview/element-bounds.ts
@@ -1,327 +1,327 @@
-import type { TimelineTrack, TimelineElement } from "@/lib/timeline";
-import type { MediaAsset } from "@/lib/media/types";
-import { isMainTrack } from "@/lib/timeline";
-import { STICKER_INTRINSIC_SIZE_FALLBACK } from "@/constants/sticker-constants";
-import { DEFAULT_GRAPHIC_SOURCE_SIZE } from "@/lib/graphics";
-import { measureTextElement } from "@/lib/text/measure-element";
-import {
-	getElementLocalTime,
-	resolveTransformAtTime,
-} from "@/lib/animation";
-
-export interface ElementBounds {
-	cx: number;
-	cy: number;
-	width: number;
-	height: number;
-	rotation: number;
-}
-
-export interface ElementWithBounds {
-	trackId: string;
-	elementId: string;
-	element: TimelineElement;
-	bounds: ElementBounds;
-}
-
-function getVisualElementBounds({
-	canvasWidth,
-	canvasHeight,
-	sourceWidth,
-	sourceHeight,
-	transform,
-}: {
-	canvasWidth: number;
-	canvasHeight: number;
-	sourceWidth: number;
-	sourceHeight: number;
-	transform: {
-		scaleX: number;
-		scaleY: number;
-		position: { x: number; y: number };
-		rotate: number;
-	};
-}): ElementBounds {
-	const containScale = Math.min(
-		canvasWidth / sourceWidth,
-		canvasHeight / sourceHeight,
-	);
-	const scaledWidth = sourceWidth * containScale * transform.scaleX;
-	const scaledHeight = sourceHeight * containScale * transform.scaleY;
-	const cx = canvasWidth / 2 + transform.position.x;
-	const cy = canvasHeight / 2 + transform.position.y;
-
-	return {
-		cx,
-		cy,
-		width: scaledWidth,
-		height: scaledHeight,
-		rotation: transform.rotate,
-	};
-}
-
-function getTransformedRectBounds({
-	canvasWidth,
-	canvasHeight,
-	rect,
-	transform,
-}: {
-	canvasWidth: number;
-	canvasHeight: number;
-	rect: { left: number; top: number; width: number; height: number };
-	transform: {
-		scaleX: number;
-		scaleY: number;
-		position: { x: number; y: number };
-		rotate: number;
-	};
-}): ElementBounds {
-	const localCenterX = rect.left + rect.width / 2;
-	const localCenterY = rect.top + rect.height / 2;
-	const scaledCenterX = localCenterX * transform.scaleX;
-	const scaledCenterY = localCenterY * transform.scaleY;
-	const rotationRad = (transform.rotate * Math.PI) / 180;
-	const cos = Math.cos(rotationRad);
-	const sin = Math.sin(rotationRad);
-	return {
-		cx:
-			canvasWidth / 2 +
-			transform.position.x +
-			scaledCenterX * cos -
-			scaledCenterY * sin,
-		cy:
-			canvasHeight / 2 +
-			transform.position.y +
-			scaledCenterX * sin +
-			scaledCenterY * cos,
-		width: rect.width * transform.scaleX,
-		height: rect.height * transform.scaleY,
-		rotation: transform.rotate,
-	};
-}
-
-/**
- * Bounds policy: bounds reflect base content geometry (text glyphs + background,
- * sticker/image/video content area) and base transform. Post-effect spill (blur,
- * glow) and mask-clipped regions are intentionally excluded — handles manipulate
- * the canonical element geometry, not visual effect output.
- */
-function getElementBounds({
-	element,
-	canvasSize,
-	mediaAsset,
-	localTime,
-}: {
-	element: TimelineElement;
-	canvasSize: { width: number; height: number };
-	mediaAsset?: MediaAsset | null;
-	localTime: number;
-}): ElementBounds | null {
-	if (element.type === "audio" || element.type === "effect") return null;
-	if ("hidden" in element && element.hidden) return null;
-
-	const { width: canvasWidth, height: canvasHeight } = canvasSize;
-
-	if (element.type === "video" || element.type === "image") {
-		const transform = resolveTransformAtTime({
-			baseTransform: element.transform,
-			animations: element.animations,
-			localTime,
-		});
-		const sourceWidth = mediaAsset?.width ?? canvasWidth;
-		const sourceHeight = mediaAsset?.height ?? canvasHeight;
-		return getVisualElementBounds({
-			canvasWidth,
-			canvasHeight,
-			sourceWidth,
-			sourceHeight,
-			transform,
-		});
-	}
-
-	if (element.type === "sticker") {
-		const transform = resolveTransformAtTime({
-			baseTransform: element.transform,
-			animations: element.animations,
-			localTime,
-		});
-		return getVisualElementBounds({
-			canvasWidth,
-			canvasHeight,
-			sourceWidth: element.intrinsicWidth ?? STICKER_INTRINSIC_SIZE_FALLBACK,
-			sourceHeight: element.intrinsicHeight ?? STICKER_INTRINSIC_SIZE_FALLBACK,
-			transform,
-		});
-	}
-
-	if (element.type === "graphic") {
-		const transform = resolveTransformAtTime({
-			baseTransform: element.transform,
-			animations: element.animations,
-			localTime,
-		});
-		return getVisualElementBounds({
-			canvasWidth,
-			canvasHeight,
-			sourceWidth: DEFAULT_GRAPHIC_SOURCE_SIZE,
-			sourceHeight: DEFAULT_GRAPHIC_SOURCE_SIZE,
-			transform,
-		});
-	}
-
-	if (element.type === "text") {
-		const transform = resolveTransformAtTime({
-			baseTransform: element.transform,
-			animations: element.animations,
-			localTime,
-		});
-
-		const canvas = document.createElement("canvas");
-		const ctx = canvas.getContext("2d");
-		if (!ctx) return null;
-
-		const measured = measureTextElement({
-			element,
-			canvasHeight,
-			localTime,
-			ctx,
-		});
-
-		return getTransformedRectBounds({
-			canvasWidth,
-			canvasHeight,
-			rect: measured.visualRect,
-			transform,
-		});
-	}
-
-	return null;
-}
-
-export const ROTATION_HANDLE_OFFSET = 24;
-
-export type Corner = "top-left" | "top-right" | "bottom-left" | "bottom-right";
-export type Edge = "right" | "left" | "bottom";
-
-export function getCornerPosition({
-	bounds,
-	corner,
-}: {
-	bounds: ElementBounds;
-	corner: Corner;
-}): { x: number; y: number } {
-	const halfW = bounds.width / 2;
-	const halfH = bounds.height / 2;
-	const angleRad = (bounds.rotation * Math.PI) / 180;
-	const cos = Math.cos(angleRad);
-	const sin = Math.sin(angleRad);
-	const localX =
-		corner === "top-left" || corner === "bottom-left" ? -halfW : halfW;
-	const localY =
-		corner === "top-left" || corner === "top-right" ? -halfH : halfH;
-	return {
-		x: bounds.cx + (localX * cos - localY * sin),
-		y: bounds.cy + (localX * sin + localY * cos),
-	};
-}
-
-export function getEdgeHandlePosition({
-	bounds,
-	edge,
-}: {
-	bounds: ElementBounds;
-	edge: Edge;
-}): { x: number; y: number } {
-	const halfWidth = bounds.width / 2;
-	const halfHeight = bounds.height / 2;
-	const angleRad = (bounds.rotation * Math.PI) / 180;
-	const cos = Math.cos(angleRad);
-	const sin = Math.sin(angleRad);
-	const localX = edge === "right" ? halfWidth : edge === "left" ? -halfWidth : 0;
-	const localY = edge === "bottom" ? halfHeight : 0;
-	return {
-		x: bounds.cx + (localX * cos - localY * sin),
-		y: bounds.cy + (localX * sin + localY * cos),
-	};
-}
-
-export function getRotationHandlePosition({
-	bounds,
-}: {
-	bounds: ElementBounds;
-}): { x: number; y: number } {
-	const angleRad = (bounds.rotation * Math.PI) / 180;
-	const cos = Math.cos(angleRad);
-	const sin = Math.sin(angleRad);
-	const localY = -bounds.height / 2 - ROTATION_HANDLE_OFFSET;
-	return {
-		x: bounds.cx - localY * sin,
-		y: bounds.cy + localY * cos,
-	};
-}
-
-export function getVisibleElementsWithBounds({
-	tracks,
-	currentTime,
-	canvasSize,
-	mediaAssets,
-}: {
-	tracks: TimelineTrack[];
-	currentTime: number;
-	canvasSize: { width: number; height: number };
-	mediaAssets: MediaAsset[];
-}): ElementWithBounds[] {
-	const mediaMap = new Map(mediaAssets.map((m) => [m.id, m]));
-	const visibleTracks = tracks.filter(
-		(track) => !("hidden" in track && track.hidden),
-	);
-	const orderedTracks = [
-		...visibleTracks.filter((track) => !isMainTrack(track)),
-		...visibleTracks.filter((track) => isMainTrack(track)),
-	].reverse();
-
-	const result: ElementWithBounds[] = [];
-
-	for (const track of orderedTracks) {
-		const elements = track.elements
-			.filter((element) => !("hidden" in element && element.hidden))
-			.filter(
-				(element) =>
-					currentTime >= element.startTime &&
-					currentTime < element.startTime + element.duration,
-			)
-			.slice()
-			.sort((a, b) => {
-				if (a.startTime !== b.startTime) return a.startTime - b.startTime;
-				return a.id.localeCompare(b.id);
-			});
-
-		for (const element of elements) {
-			const localTime = getElementLocalTime({
-				timelineTime: currentTime,
-				elementStartTime: element.startTime,
-				elementDuration: element.duration,
-			});
-			const mediaAsset =
-				element.type === "video" || element.type === "image"
-					? mediaMap.get(element.mediaId)
-					: undefined;
-			const bounds = getElementBounds({
-				element,
-				canvasSize,
-				mediaAsset,
-				localTime,
-			});
-			if (bounds) {
-				result.push({
-					trackId: track.id,
-					elementId: element.id,
-					element,
-					bounds,
-				});
-			}
-		}
-	}
-
-	return result;
-}
+import type { TimelineTrack, TimelineElement } from "@/lib/timeline";
+import type { MediaAsset } from "@/lib/media/types";
+import { isMainTrack } from "@/lib/timeline";
+import { STICKER_INTRINSIC_SIZE_FALLBACK } from "@/constants/sticker-constants";
+import { DEFAULT_GRAPHIC_SOURCE_SIZE } from "@/lib/graphics";
+import { measureTextElement } from "@/lib/text/measure-element";
+import {
+	getElementLocalTime,
+	resolveTransformAtTime,
+} from "@/lib/animation";
+
+export interface ElementBounds {
+	cx: number;
+	cy: number;
+	width: number;
+	height: number;
+	rotation: number;
+}
+
+export interface ElementWithBounds {
+	trackId: string;
+	elementId: string;
+	element: TimelineElement;
+	bounds: ElementBounds;
+}
+
+function getVisualElementBounds({
+	canvasWidth,
+	canvasHeight,
+	sourceWidth,
+	sourceHeight,
+	transform,
+}: {
+	canvasWidth: number;
+	canvasHeight: number;
+	sourceWidth: number;
+	sourceHeight: number;
+	transform: {
+		scaleX: number;
+		scaleY: number;
+		position: { x: number; y: number };
+		rotate: number;
+	};
+}): ElementBounds {
+	const containScale = Math.min(
+		canvasWidth / sourceWidth,
+		canvasHeight / sourceHeight,
+	);
+	const scaledWidth = sourceWidth * containScale * transform.scaleX;
+	const scaledHeight = sourceHeight * containScale * transform.scaleY;
+	const cx = canvasWidth / 2 + transform.position.x;
+	const cy = canvasHeight / 2 + transform.position.y;
+
+	return {
+		cx,
+		cy,
+		width: scaledWidth,
+		height: scaledHeight,
+		rotation: transform.rotate,
+	};
+}
+
+function getTransformedRectBounds({
+	canvasWidth,
+	canvasHeight,
+	rect,
+	transform,
+}: {
+	canvasWidth: number;
+	canvasHeight: number;
+	rect: { left: number; top: number; width: number; height: number };
+	transform: {
+		scaleX: number;
+		scaleY: number;
+		position: { x: number; y: number };
+		rotate: number;
+	};
+}): ElementBounds {
+	const localCenterX = rect.left + rect.width / 2;
+	const localCenterY = rect.top + rect.height / 2;
+	const scaledCenterX = localCenterX * transform.scaleX;
+	const scaledCenterY = localCenterY * transform.scaleY;
+	const rotationRad = (transform.rotate * Math.PI) / 180;
+	const cos = Math.cos(rotationRad);
+	const sin = Math.sin(rotationRad);
+	return {
+		cx:
+			canvasWidth / 2 +
+			transform.position.x +
+			scaledCenterX * cos -
+			scaledCenterY * sin,
+		cy:
+			canvasHeight / 2 +
+			transform.position.y +
+			scaledCenterX * sin +
+			scaledCenterY * cos,
+		width: rect.width * transform.scaleX,
+		height: rect.height * transform.scaleY,
+		rotation: transform.rotate,
+	};
+}
+
+/**
+ * Bounds policy: bounds reflect base content geometry (text glyphs + background,
+ * sticker/image/video content area) and base transform. Post-effect spill (blur,
+ * glow) and mask-clipped regions are intentionally excluded — handles manipulate
+ * the canonical element geometry, not visual effect output.
+ */
+function getElementBounds({
+	element,
+	canvasSize,
+	mediaAsset,
+	localTime,
+}: {
+	element: TimelineElement;
+	canvasSize: { width: number; height: number };
+	mediaAsset?: MediaAsset | null;
+	localTime: number;
+}): ElementBounds | null {
+	if (element.type === "audio" || element.type === "effect") return null;
+	if ("hidden" in element && element.hidden) return null;
+
+	const { width: canvasWidth, height: canvasHeight } = canvasSize;
+
+	if (element.type === "video" || element.type === "image") {
+		const transform = resolveTransformAtTime({
+			baseTransform: element.transform,
+			animations: element.animations,
+			localTime,
+		});
+		const sourceWidth = mediaAsset?.width ?? canvasWidth;
+		const sourceHeight = mediaAsset?.height ?? canvasHeight;
+		return getVisualElementBounds({
+			canvasWidth,
+			canvasHeight,
+			sourceWidth,
+			sourceHeight,
+			transform,
+		});
+	}
+
+	if (element.type === "sticker") {
+		const transform = resolveTransformAtTime({
+			baseTransform: element.transform,
+			animations: element.animations,
+			localTime,
+		});
+		return getVisualElementBounds({
+			canvasWidth,
+			canvasHeight,
+			sourceWidth: element.intrinsicWidth ?? STICKER_INTRINSIC_SIZE_FALLBACK,
+			sourceHeight: element.intrinsicHeight ?? STICKER_INTRINSIC_SIZE_FALLBACK,
+			transform,
+		});
+	}
+
+	if (element.type === "graphic") {
+		const transform = resolveTransformAtTime({
+			baseTransform: element.transform,
+			animations: element.animations,
+			localTime,
+		});
+		return getVisualElementBounds({
+			canvasWidth,
+			canvasHeight,
+			sourceWidth: DEFAULT_GRAPHIC_SOURCE_SIZE,
+			sourceHeight: DEFAULT_GRAPHIC_SOURCE_SIZE,
+			transform,
+		});
+	}
+
+	if (element.type === "text") {
+		const transform = resolveTransformAtTime({
+			baseTransform: element.transform,
+			animations: element.animations,
+			localTime,
+		});
+
+		const canvas = document.createElement("canvas");
+		const ctx = canvas.getContext("2d");
+		if (!ctx) return null;
+
+		const measured = measureTextElement({
+			element,
+			canvasHeight,
+			localTime,
+			ctx,
+		});
+
+		return getTransformedRectBounds({
+			canvasWidth,
+			canvasHeight,
+			rect: measured.visualRect,
+			transform,
+		});
+	}
+
+	return null;
+}
+
+export const ROTATION_HANDLE_OFFSET = 24;
+
+export type Corner = "top-left" | "top-right" | "bottom-left" | "bottom-right";
+export type Edge = "right" | "left" | "bottom";
+
+export function getCornerPosition({
+	bounds,
+	corner,
+}: {
+	bounds: ElementBounds;
+	corner: Corner;
+}): { x: number; y: number } {
+	const halfW = bounds.width / 2;
+	const halfH = bounds.height / 2;
+	const angleRad = (bounds.rotation * Math.PI) / 180;
+	const cos = Math.cos(angleRad);
+	const sin = Math.sin(angleRad);
+	const localX =
+		corner === "top-left" || corner === "bottom-left" ? -halfW : halfW;
+	const localY =
+		corner === "top-left" || corner === "top-right" ? -halfH : halfH;
+	return {
+		x: bounds.cx + (localX * cos - localY * sin),
+		y: bounds.cy + (localX * sin + localY * cos),
+	};
+}
+
+export function getEdgeHandlePosition({
+	bounds,
+	edge,
+}: {
+	bounds: ElementBounds;
+	edge: Edge;
+}): { x: number; y: number } {
+	const halfWidth = bounds.width / 2;
+	const halfHeight = bounds.height / 2;
+	const angleRad = (bounds.rotation * Math.PI) / 180;
+	const cos = Math.cos(angleRad);
+	const sin = Math.sin(angleRad);
+	const localX = edge === "right" ? halfWidth : edge === "left" ? -halfWidth : 0;
+	const localY = edge === "bottom" ? halfHeight : 0;
+	return {
+		x: bounds.cx + (localX * cos - localY * sin),
+		y: bounds.cy + (localX * sin + localY * cos),
+	};
+}
+
+export function getRotationHandlePosition({
+	bounds,
+}: {
+	bounds: ElementBounds;
+}): { x: number; y: number } {
+	const angleRad = (bounds.rotation * Math.PI) / 180;
+	const cos = Math.cos(angleRad);
+	const sin = Math.sin(angleRad);
+	const localY = -bounds.height / 2 - ROTATION_HANDLE_OFFSET;
+	return {
+		x: bounds.cx - localY * sin,
+		y: bounds.cy + localY * cos,
+	};
+}
+
+export function getVisibleElementsWithBounds({
+	tracks,
+	currentTime,
+	canvasSize,
+	mediaAssets,
+}: {
+	tracks: TimelineTrack[];
+	currentTime: number;
+	canvasSize: { width: number; height: number };
+	mediaAssets: MediaAsset[];
+}): ElementWithBounds[] {
+	const mediaMap = new Map(mediaAssets.map((m) => [m.id, m]));
+	const visibleTracks = tracks.filter(
+		(track) => !("hidden" in track && track.hidden),
+	);
+	const orderedTracks = [
+		...visibleTracks.filter((track) => !isMainTrack(track)),
+		...visibleTracks.filter((track) => isMainTrack(track)),
+	].reverse();
+
+	const result: ElementWithBounds[] = [];
+
+	for (const track of orderedTracks) {
+		const elements = track.elements
+			.filter((element) => !("hidden" in element && element.hidden))
+			.filter(
+				(element) =>
+					currentTime >= element.startTime &&
+					currentTime < element.startTime + element.duration,
+			)
+			.slice()
+			.sort((a, b) => {
+				if (a.startTime !== b.startTime) return a.startTime - b.startTime;
+				return a.id.localeCompare(b.id);
+			});
+
+		for (const element of elements) {
+			const localTime = getElementLocalTime({
+				timelineTime: currentTime,
+				elementStartTime: element.startTime,
+				elementDuration: element.duration,
+			});
+			const mediaAsset =
+				element.type === "video" || element.type === "image"
+					? mediaMap.get(element.mediaId)
+					: undefined;
+			const bounds = getElementBounds({
+				element,
+				canvasSize,
+				mediaAsset,
+				localTime,
+			});
+			if (bounds) {
+				result.push({
+					trackId: track.id,
+					elementId: element.id,
+					element,
+					bounds,
+				});
+			}
+		}
+	}
+
+	return result;
+}