From 3e89d2998588f8e35c524e523ba2ee853f0f6475 Mon Sep 17 00:00:00 2001
From: Maze Winther <mazewinther@gmail.com>
Date: Mon, 20 Apr 2026 11:31:17 +0200
Subject: refactor: restructure files to their domains,  new preview overlay
 system, and dep graph

---
 .../src/preview/components/handle-primitives.tsx   | 427 +++++++++++++++++++++
 1 file changed, 427 insertions(+)
 create mode 100644 apps/web/src/preview/components/handle-primitives.tsx

(limited to 'apps/web/src/preview/components/handle-primitives.tsx')

diff --git a/apps/web/src/preview/components/handle-primitives.tsx b/apps/web/src/preview/components/handle-primitives.tsx
new file mode 100644
index 00000000..33baf9fc
--- /dev/null
+++ b/apps/web/src/preview/components/handle-primitives.tsx
@@ -0,0 +1,427 @@
+"use client";
+
+import { cn } from "@/utils/ui";
+import { HugeiconsIcon } from "@hugeicons/react";
+import type { IconSvgElement } from "@hugeicons/react";
+
+export const HANDLE_SIZE = 10;
+export const HANDLE_HIT_AREA_SIZE = 18;
+export const ICON_HANDLE_RADIUS = 10;
+export const EDGE_HANDLE_THIN_SIZE = 6;
+export const EDGE_HANDLE_THICK_SIZE = 14;
+export const LINE_HIT_AREA_SIZE = 48;
+
+export function getResizeCursor({ angleDeg }: { angleDeg: number }): string {
+	const normalized = ((angleDeg % 180) + 180) % 180;
+	if (normalized < 22.5 || normalized >= 157.5) return "ew-resize";
+	if (normalized < 67.5) return "nwse-resize";
+	if (normalized < 112.5) return "ns-resize";
+	return "nesw-resize";
+}
+
+export function HandleButton({
+	screen,
+	cursor,
+	hitAreaSize,
+	className,
+	onPointerDown,
+	onPointerMove,
+	onPointerUp,
+	children,
+}: {
+	screen: { x: number; y: number };
+	cursor?: string;
+	hitAreaSize: number;
+	className?: string;
+	onPointerDown: (event: React.PointerEvent) => void;
+	onPointerMove: (event: React.PointerEvent) => void;
+	onPointerUp: (event: React.PointerEvent) => void;
+	children: React.ReactNode;
+}) {
+	return (
+		<button
+			type="button"
+			className={cn(
+				"absolute flex items-center justify-center outline-none",
+				className,
+			)}
+			style={{
+				left: screen.x - hitAreaSize / 2,
+				top: screen.y - hitAreaSize / 2,
+				width: hitAreaSize,
+				height: hitAreaSize,
+				pointerEvents: "auto",
+				cursor,
+			}}
+			onPointerDown={onPointerDown}
+			onPointerMove={onPointerMove}
+			onPointerUp={onPointerUp}
+			onPointerLeave={onPointerUp}
+			onKeyDown={(event) => event.key === "Enter" && event.preventDefault()}
+			onKeyUp={(event) => event.key === "Enter" && event.preventDefault()}
+		>
+			{children}
+		</button>
+	);
+}
+
+export function CornerHandle({
+	cursor,
+	screen,
+	onPointerDown,
+	onPointerMove,
+	onPointerUp,
+}: {
+	cursor?: string;
+	screen: { x: number; y: number };
+	onPointerDown: (event: React.PointerEvent) => void;
+	onPointerMove: (event: React.PointerEvent) => void;
+	onPointerUp: (event: React.PointerEvent) => void;
+}) {
+	return (
+		<HandleButton
+			screen={screen}
+			cursor={cursor}
+			hitAreaSize={HANDLE_HIT_AREA_SIZE}
+			onPointerDown={onPointerDown}
+			onPointerMove={onPointerMove}
+			onPointerUp={onPointerUp}
+		>
+			<div
+				className="rounded-sm bg-white"
+				style={{ width: HANDLE_SIZE, height: HANDLE_SIZE }}
+			/>
+		</HandleButton>
+	);
+}
+
+export function CircleHandle({
+	cursor,
+	screen,
+	size = HANDLE_SIZE,
+	isSelected = false,
+	onPointerDown,
+	onPointerMove,
+	onPointerUp,
+}: {
+	cursor?: string;
+	screen: { x: number; y: number };
+	size?: number;
+	isSelected?: boolean;
+	onPointerDown: (event: React.PointerEvent) => void;
+	onPointerMove: (event: React.PointerEvent) => void;
+	onPointerUp: (event: React.PointerEvent) => void;
+}) {
+	return (
+		<HandleButton
+			screen={screen}
+			cursor={cursor}
+			hitAreaSize={HANDLE_HIT_AREA_SIZE}
+			onPointerDown={onPointerDown}
+			onPointerMove={onPointerMove}
+			onPointerUp={onPointerUp}
+		>
+			<div
+				className={cn("rounded-full", isSelected ? "bg-primary" : "bg-white")}
+				style={{ width: size, height: size }}
+			/>
+		</HandleButton>
+	);
+}
+
+export function EdgeHandle({
+	edge,
+	screen,
+	rotation,
+	onPointerDown,
+	onPointerMove,
+	onPointerUp,
+}: {
+	edge: "right" | "left" | "bottom";
+	screen: { x: number; y: number };
+	rotation: number;
+	onPointerDown: (event: React.PointerEvent) => void;
+	onPointerMove: (event: React.PointerEvent) => void;
+	onPointerUp: (event: React.PointerEvent) => void;
+}) {
+	const isHorizontalEdge = edge === "right" || edge === "left";
+	const width = isHorizontalEdge
+		? EDGE_HANDLE_THIN_SIZE
+		: EDGE_HANDLE_THICK_SIZE;
+	const height = isHorizontalEdge
+		? EDGE_HANDLE_THICK_SIZE
+		: EDGE_HANDLE_THIN_SIZE;
+	const cursor = getResizeCursor({
+		angleDeg: isHorizontalEdge ? rotation : rotation + 90,
+	});
+
+	return (
+		<HandleButton
+			screen={screen}
+			cursor={cursor}
+			hitAreaSize={HANDLE_HIT_AREA_SIZE}
+			onPointerDown={onPointerDown}
+			onPointerMove={onPointerMove}
+			onPointerUp={onPointerUp}
+		>
+			<div
+				className="rounded-sm bg-white"
+				style={{ width, height, transform: `rotate(${rotation}deg)` }}
+			/>
+		</HandleButton>
+	);
+}
+
+export function IconHandle({
+	icon,
+	screen,
+	onPointerDown,
+	onPointerMove,
+	onPointerUp,
+}: {
+	icon: IconSvgElement;
+	screen: { x: number; y: number };
+	onPointerDown: (event: React.PointerEvent) => void;
+	onPointerMove: (event: React.PointerEvent) => void;
+	onPointerUp: (event: React.PointerEvent) => void;
+}) {
+	return (
+		<HandleButton
+			screen={screen}
+			hitAreaSize={ICON_HANDLE_RADIUS * 2}
+			className="rounded-full bg-white text-black shadow-sm"
+			onPointerDown={onPointerDown}
+			onPointerMove={onPointerMove}
+			onPointerUp={onPointerUp}
+		>
+			<HugeiconsIcon icon={icon} className="size-3" strokeWidth={2.5} />
+		</HandleButton>
+	);
+}
+
+export function BoundingBoxOutline({
+	center,
+	outlineWidth,
+	outlineHeight,
+	rotation,
+	cursor,
+	dashed = false,
+	onPointerDown,
+	onPointerMove,
+	onPointerUp,
+}: {
+	center: { x: number; y: number };
+	outlineWidth: number;
+	outlineHeight: number;
+	rotation: number;
+	cursor?: string;
+	dashed?: boolean;
+	onPointerDown?: (event: React.PointerEvent) => void;
+	onPointerMove?: (event: React.PointerEvent) => void;
+	onPointerUp?: (event: React.PointerEvent) => void;
+}) {
+	return (
+		<svg
+			className="absolute overflow-visible"
+			aria-hidden="true"
+			focusable="false"
+			style={{
+				left: center.x - outlineWidth / 2,
+				top: center.y - outlineHeight / 2,
+				width: outlineWidth,
+				height: outlineHeight,
+				transform: `rotate(${rotation}deg)`,
+				transformOrigin: "center center",
+				pointerEvents: onPointerDown ? "auto" : "none",
+				cursor,
+			}}
+			onPointerDown={onPointerDown}
+			onPointerMove={onPointerMove}
+			onPointerUp={onPointerUp}
+			onPointerLeave={onPointerUp}
+		>
+			<rect
+				x={0.5}
+				y={0.5}
+				width={Math.max(outlineWidth - 1, 0)}
+				height={Math.max(outlineHeight - 1, 0)}
+				fill="transparent"
+				stroke="white"
+				strokeDasharray={dashed ? "4 4" : undefined}
+				strokeOpacity={0.75}
+				vectorEffect="non-scaling-stroke"
+				style={{ pointerEvents: onPointerDown ? "all" : "none" }}
+			/>
+		</svg>
+	);
+}
+
+export function ShapeOutline({
+	center,
+	outlineWidth,
+	outlineHeight,
+	rotation,
+	pathData,
+	cursor,
+	onPointerDown,
+	onPointerMove,
+	onPointerUp,
+}: {
+	center: { x: number; y: number };
+	outlineWidth: number;
+	outlineHeight: number;
+	rotation: number;
+	pathData: string;
+	cursor?: string;
+	onPointerDown?: (event: React.PointerEvent) => void;
+	onPointerMove?: (event: React.PointerEvent) => void;
+	onPointerUp?: (event: React.PointerEvent) => void;
+}) {
+	return (
+		<svg
+			className="absolute overflow-visible"
+			aria-hidden="true"
+			focusable="false"
+			style={{
+				left: center.x - outlineWidth / 2,
+				top: center.y - outlineHeight / 2,
+				width: outlineWidth,
+				height: outlineHeight,
+				transform: `rotate(${rotation}deg)`,
+				transformOrigin: "center center",
+				pointerEvents: onPointerDown ? "auto" : "none",
+				cursor,
+			}}
+			onPointerDown={onPointerDown}
+			onPointerMove={onPointerMove}
+			onPointerUp={onPointerUp}
+			onPointerLeave={onPointerUp}
+		>
+			<path
+				d={pathData}
+				fill="transparent"
+				stroke="white"
+				strokeOpacity={0.75}
+				vectorEffect="non-scaling-stroke"
+				style={{ pointerEvents: onPointerDown ? "all" : "none" }}
+			/>
+		</svg>
+	);
+}
+
+export function CanvasPathOutline({
+	pathData,
+	translateX = 0,
+	translateY = 0,
+	scaleX = 1,
+	scaleY = 1,
+	cursor,
+	strokeWidth = 1,
+	strokeOpacity = 0.75,
+	onPointerDown,
+	onPointerMove,
+	onPointerUp,
+}: {
+	pathData: string;
+	translateX?: number;
+	translateY?: number;
+	scaleX?: number;
+	scaleY?: number;
+	cursor?: string;
+	strokeWidth?: number;
+	strokeOpacity?: number;
+	onPointerDown?: (event: React.PointerEvent) => void;
+	onPointerMove?: (event: React.PointerEvent) => void;
+	onPointerUp?: (event: React.PointerEvent) => void;
+}) {
+	return (
+		<svg
+			className="absolute inset-0 overflow-visible"
+			aria-hidden="true"
+			focusable="false"
+			style={{
+				pointerEvents: onPointerDown ? "auto" : "none",
+				cursor,
+			}}
+			onPointerDown={onPointerDown}
+			onPointerMove={onPointerMove}
+			onPointerUp={onPointerUp}
+			onPointerLeave={onPointerUp}
+		>
+			<g
+				transform={`translate(${translateX} ${translateY}) scale(${scaleX} ${scaleY})`}
+			>
+				<path
+					d={pathData}
+					fill="transparent"
+					stroke="white"
+					strokeWidth={strokeWidth}
+					strokeOpacity={strokeOpacity}
+					vectorEffect="non-scaling-stroke"
+					style={{ pointerEvents: onPointerDown ? "stroke" : "none" }}
+				/>
+			</g>
+		</svg>
+	);
+}
+
+export function LineOverlay({
+	start,
+	end,
+	cursor,
+	onPointerDown,
+	onPointerMove,
+	onPointerUp,
+}: {
+	start: { x: number; y: number };
+	end: { x: number; y: number };
+	cursor?: string;
+	onPointerDown?: (event: React.PointerEvent) => void;
+	onPointerMove?: (event: React.PointerEvent) => void;
+	onPointerUp?: (event: React.PointerEvent) => void;
+}) {
+	const dx = end.x - start.x;
+	const dy = end.y - start.y;
+	const length = Math.sqrt(dx * dx + dy * dy);
+	const angleDeg = (Math.atan2(dy, dx) * 180) / Math.PI;
+	const cx = (start.x + end.x) / 2;
+	const cy = (start.y + end.y) / 2;
+
+	const sharedStyle = {
+		left: cx - length / 2,
+		width: length,
+		transform: `rotate(${angleDeg}deg)`,
+		transformOrigin: "center center",
+	};
+
+	return (
+		<>
+			{onPointerDown && (
+				<div
+					className="absolute"
+					style={{
+						...sharedStyle,
+						top: cy - LINE_HIT_AREA_SIZE / 2,
+						height: LINE_HIT_AREA_SIZE,
+						pointerEvents: "auto",
+						cursor,
+					}}
+					onPointerDown={onPointerDown}
+					onPointerMove={onPointerMove}
+					onPointerUp={onPointerUp}
+					onPointerLeave={onPointerUp}
+				/>
+			)}
+			<div
+				className="pointer-events-none absolute"
+				style={{
+					...sharedStyle,
+					top: cy - 0.5,
+					height: 1,
+					backgroundColor: "white",
+					opacity: 0.75,
+				}}
+			/>
+		</>
+	);
+}
-- 
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