1 files changed, 149 insertions, 0 deletions
diff --git a/apps/web/src/components/editor/panels/preview/text-edit-overlay.tsx b/apps/web/src/components/editor/panels/preview/text-edit-overlay.tsx
new file mode 100644
index 00000000..265e972d
--- /dev/null
+++ b/apps/web/src/components/editor/panels/preview/text-edit-overlay.tsx
@@ -0,0 +1,149 @@
+"use client";
+
+import { useCallback, useEffect, useRef } from "react";
+import { useEditor } from "@/hooks/use-editor";
+import type { TextElement } from "@/types/timeline";
+import {
+	positionToOverlay,
+	getDisplayScale,
+} from "@/lib/preview/preview-coords";
+import {
+	DEFAULT_LINE_HEIGHT,
+	FONT_SIZE_SCALE_REFERENCE,
+} from "@/constants/text-constants";
+
+const TEXT_BACKGROUND_PADDING = "4px 8px";
+const TEXT_EDIT_VERTICAL_OFFSET_EM = 0.06;
+
+export function TextEditOverlay({
+	canvasRef,
+	containerRef,
+	trackId,
+	elementId,
+	element,
+	onCommit,
+	onCancel,
+}: {
+	canvasRef: React.RefObject<HTMLCanvasElement | null>;
+	containerRef: React.RefObject<HTMLDivElement | null>;
+	trackId: string;
+	elementId: string;
+	element: TextElement;
+	onCommit: () => void;
+	onCancel: () => void;
+}) {
+	const editor = useEditor();
+	const divRef = useRef<HTMLDivElement>(null);
+
+	useEffect(() => {
+		const div = divRef.current;
+		if (!div) return;
+		div.focus();
+		const range = document.createRange();
+		range.selectNodeContents(div);
+		const selection = window.getSelection();
+		selection?.removeAllRanges();
+		selection?.addRange(range);
+	}, []);
+
+	const handleInput = useCallback(() => {
+		const div = divRef.current;
+		if (!div) return;
+		const text = div.innerText;
+		editor.timeline.previewElements({
+			updates: [{ trackId, elementId, updates: { content: text } }],
+		});
+	}, [editor.timeline, trackId, elementId]);
+
+	const handleKeyDown = useCallback(
+		(event: React.KeyboardEvent) => {
+			const { key } = event;
+			if (key === "Escape") {
+				event.preventDefault();
+				onCancel();
+				return;
+			}
+		},
+		[onCancel],
+	);
+
+	const canvasRect = canvasRef.current?.getBoundingClientRect();
+	const containerRect = containerRef.current?.getBoundingClientRect();
+	const canvasSize = editor.project.getActive().settings.canvasSize;
+
+	if (!canvasRect || !containerRect || !canvasSize) return null;
+
+	const { x: posX, y: posY } = positionToOverlay({
+		positionX: element.transform.position.x,
+		positionY: element.transform.position.y,
+		canvasRect,
+		containerRect,
+		canvasSize,
+	});
+
+	const { x: displayScaleX } = getDisplayScale({
+		canvasRect,
+		canvasSize,
+	});
+
+	const displayFontSize =
+		element.fontSize *
+		(canvasSize.height / FONT_SIZE_SCALE_REFERENCE) *
+		displayScaleX;
+
+	const verticalAlignmentOffset =
+		displayFontSize * TEXT_EDIT_VERTICAL_OFFSET_EM;
+
+	const lineHeight = element.lineHeight ?? DEFAULT_LINE_HEIGHT;
+	const fontWeight = element.fontWeight === "bold" ? "bold" : "normal";
+	const fontStyle = element.fontStyle === "italic" ? "italic" : "normal";
+	const letterSpacing = element.letterSpacing ?? 0;
+	const backgroundColor =
+		element.backgroundColor === "transparent"
+			? "transparent"
+			: element.backgroundColor;
+
+	return (
+		<div
+			className="absolute"
+			style={{
+				left: posX,
+				top: posY - verticalAlignmentOffset,
+				transform: `translate(-50%, -50%) scale(${element.transform.scale}) rotate(${element.transform.rotate}deg)`,
+				transformOrigin: "center center",
+			}}
+		>
+			{/* biome-ignore lint/a11y/useSemanticElements: contenteditable required for multiline, IME, paste */}
+			<div
+				ref={divRef}
+				contentEditable
+				suppressContentEditableWarning
+				tabIndex={0}
+				role="textbox"
+				aria-label="Edit text"
+				className="cursor-text select-text outline-none whitespace-pre"
+				style={{
+					fontSize: displayFontSize,
+					fontFamily: element.fontFamily,
+					fontWeight,
+					fontStyle,
+					textAlign: element.textAlign,
+					letterSpacing: `${letterSpacing}px`,
+					lineHeight,
+					color: element.color,
+					backgroundColor,
+					minHeight: displayFontSize * lineHeight,
+					textDecoration: element.textDecoration ?? "none",
+					padding:
+						backgroundColor === "transparent" ? 0 : TEXT_BACKGROUND_PADDING,
+					minWidth: 1,
+				}}
+				onInput={handleInput}
+				onBlur={onCommit}
+				onKeyDown={handleKeyDown}
+			>
+				{element.content || ""}
+			</div>
+		</div>
+	);
+}