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|
"use client";
import { useCallback, useEffect, useRef } from "react";
import { usePreviewViewport } from "@/preview/components/preview-viewport";
import { useEditor } from "@/editor/use-editor";
import type { TextElement } from "@/timeline";
import { DEFAULTS } from "@/timeline/defaults";
import {
getElementLocalTime,
} from "@/animation";
import { resolveTransformAtTime } from "@/rendering/animation-values";
import { buildTransformFromParams } from "@/rendering";
import { resolveTextLayout } from "@/text/primitives";
import {
buildTextBackgroundFromElement,
buildTextLayoutParamsFromElement,
} from "@/text/measure-element";
export function TextEditOverlay({
trackId,
elementId,
element,
onCommit,
}: {
trackId: string;
elementId: string;
element: TextElement;
onCommit: () => void;
}) {
const editor = useEditor();
const viewport = usePreviewViewport();
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: { params: { content: text } } }],
});
}, [editor.timeline, trackId, elementId]);
const handleKeyDown = useCallback(
({ event }: { event: React.KeyboardEvent }) => {
const { key } = event;
if (key === "Escape") {
event.preventDefault();
onCommit();
return;
}
},
[onCommit],
);
const canvasSize = editor.project.getActive().settings.canvasSize;
if (!canvasSize) return null;
const currentTime = editor.playback.getCurrentTime();
const localTime = getElementLocalTime({
timelineTime: currentTime,
elementStartTime: element.startTime,
elementDuration: element.duration,
});
const transform = resolveTransformAtTime({
baseTransform: buildTransformFromParams({ params: element.params }),
animations: element.animations,
localTime,
});
const { x: posX, y: posY } = viewport.positionToOverlay({
positionX: transform.position.x,
positionY: transform.position.y,
});
const { x: displayScaleX } = viewport.getDisplayScale();
const textParams = buildTextLayoutParamsFromElement({ element });
const resolvedTextLayout = resolveTextLayout({
text: textParams,
canvasHeight: canvasSize.height,
});
const lineHeight = textParams.lineHeight ?? DEFAULTS.text.lineHeight;
const canvasLetterSpacing = textParams.letterSpacing ?? 0;
const lineHeightPx = resolvedTextLayout.lineHeightPx;
const bg = buildTextBackgroundFromElement({ element });
const shouldShowBackground =
bg.enabled && bg.color && bg.color !== "transparent";
const fontSizeRatio = resolvedTextLayout.fontSizeRatio;
const canvasPaddingX = shouldShowBackground
? (bg.paddingX ?? DEFAULTS.text.background.paddingX) * fontSizeRatio
: 0;
const canvasPaddingY = shouldShowBackground
? (bg.paddingY ?? DEFAULTS.text.background.paddingY) * fontSizeRatio
: 0;
return (
<div
className="absolute"
style={{
left: posX,
top: posY,
transform: `translate(-50%, -50%) scale(${transform.scaleX * displayScaleX}, ${transform.scaleY * displayScaleX}) rotate(${transform.rotate}deg)`,
transformOrigin: "center center",
}}
>
<div
ref={divRef}
contentEditable
suppressContentEditableWarning
tabIndex={0}
role="textbox"
aria-label="Edit text"
className="cursor-text select-text outline-none whitespace-pre"
style={{
fontSize: resolvedTextLayout.scaledFontSize,
fontFamily: textParams.fontFamily,
fontWeight: textParams.fontWeight === "bold" ? "bold" : "normal",
fontStyle: textParams.fontStyle === "italic" ? "italic" : "normal",
textAlign: textParams.textAlign,
letterSpacing: `${canvasLetterSpacing}px`,
lineHeight,
color: "transparent",
caretColor:
typeof element.params.color === "string"
? element.params.color
: "#ffffff",
backgroundColor: shouldShowBackground ? bg.color : "transparent",
minHeight: lineHeightPx,
textDecoration: textParams.textDecoration ?? "none",
padding: shouldShowBackground
? `${canvasPaddingY}px ${canvasPaddingX}px`
: 0,
minWidth: 1,
}}
onInput={handleInput}
onBlur={onCommit}
onKeyDown={(event) => handleKeyDown({ event })}
>
{textParams.content}
</div>
</div>
);
}
|
