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feat(preview): add browser-chrome and phone-bezel frames to previews #627

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feat(preview): add browser-chrome and phone-bezel frames to previews #627

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92 changes: 72 additions & 20 deletions frontend/src/components/preview/PreviewComponent.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -24,13 +24,22 @@ interface Props {
const MOBILE_VIEWPORT_WIDTH = 375;
export const DESKTOP_VIEWPORT_WIDTH = 1366;

// Chrome dimensions, measured at the *unscaled* viewport size so they
// scale down together with the rest of the frame (a shrunk browser
// window should look like a shrunk browser window, toolbar included).
const BROWSER_TOOLBAR_HEIGHT = 36;
const PHONE_BEZEL_WIDTH = 10;
const PHONE_NOTCH_HEIGHT = 24;
const PHONE_HOME_INDICATOR_HEIGHT = 20;

function PreviewComponent({
code,
device,
onScaleChange,
viewMode,
}: Props) {
const iframeRef = useRef<HTMLIFrameElement | null>(null);
const frameRef = useRef<HTMLDivElement | null>(null);
const wrapperRef = useRef<HTMLDivElement | null>(null);

// Don't update code more often than every 200ms.
Expand Down Expand Up @@ -175,11 +184,14 @@ function PreviewComponent({
}, [inSelectAndEditMode]); // eslint-disable-line react-hooks/exhaustive-deps

// Apply a fixed viewport per device and scale to fit the available pane.
// The transform/size is applied to the *frame* (chrome + iframe together)
// so the browser toolbar / phone bezel scale down in proportion, the same
// way a real shrunk browser window looks.
useEffect(() => {
const updateScale = () => {
const wrapper = wrapperRef.current;
const iframe = iframeRef.current;
if (!wrapper || !iframe) return;
const frame = frameRef.current;
if (!wrapper || !frame) return;

const viewportWidth = wrapper.clientWidth;
const viewportHeight = wrapper.clientHeight;
Expand All @@ -189,21 +201,21 @@ function PreviewComponent({
activeMode === "fit"
? Math.min(1, viewportWidth / DESKTOP_VIEWPORT_WIDTH)
: 1;
const iframeHeight = scaleValue > 0 ? viewportHeight / scaleValue : viewportHeight;
const frameHeight = scaleValue > 0 ? viewportHeight / scaleValue : viewportHeight;

onScaleChange?.(scaleValue);
iframe.style.width = `${DESKTOP_VIEWPORT_WIDTH}px`;
iframe.style.height = `${iframeHeight}px`;
iframe.style.transform = `scale(${scaleValue})`;
iframe.style.transformOrigin = "top left";
frame.style.width = `${DESKTOP_VIEWPORT_WIDTH}px`;
frame.style.height = `${frameHeight}px`;
frame.style.transform = `scale(${scaleValue})`;
frame.style.transformOrigin = "top left";
return;
}

onScaleChange?.(1);
iframe.style.width = `${MOBILE_VIEWPORT_WIDTH}px`;
iframe.style.height = `${viewportHeight}px`;
iframe.style.transform = "scale(1)";
iframe.style.transformOrigin = "top left";
frame.style.width = `${MOBILE_VIEWPORT_WIDTH}px`;
frame.style.height = `${viewportHeight}px`;
frame.style.transform = "scale(1)";
frame.style.transformOrigin = "top left";
};

updateScale();
Expand Down Expand Up @@ -306,16 +318,56 @@ function PreviewComponent({
ref={wrapperRef}
className={`w-full h-full ${device === "mobile" ? "flex justify-center" : ""}`}
>
<iframe
id={`preview-${device}`}
ref={iframeRef}
title="Preview"
className={classNames(
{
"border-0": true,
}
<div
ref={frameRef}
className={classNames("flex flex-col", {
// Desktop: a macOS-style browser window - rounded corners,
// subtle shadow, and a traffic-light toolbar above the page.
"rounded-xl shadow-xl border border-gray-200 dark:border-zinc-700 overflow-hidden bg-white dark:bg-zinc-900":
device === "desktop",
// Mobile: a phone bezel - dark border, notch, home indicator.
"rounded-[2.5rem] shadow-xl bg-black overflow-hidden":
device === "mobile",
})}
style={
device === "mobile"
? { padding: `${PHONE_BEZEL_WIDTH}px`, boxSizing: "border-box" }
: { boxSizing: "border-box" }
}
>
{device === "desktop" && (
<div
className="shrink-0 flex items-center gap-1.5 px-3 bg-gray-100 dark:bg-zinc-800 border-b border-gray-200 dark:border-zinc-700"
style={{ height: BROWSER_TOOLBAR_HEIGHT }}
>
<span className="w-3 h-3 rounded-full bg-red-400" />
<span className="w-3 h-3 rounded-full bg-yellow-400" />
<span className="w-3 h-3 rounded-full bg-green-400" />
</div>
)}
{device === "mobile" && (
<div
className="shrink-0 mx-auto bg-black rounded-b-2xl"
style={{ height: PHONE_NOTCH_HEIGHT, width: "40%" }}
/>
)}
<iframe
id={`preview-${device}`}
ref={iframeRef}
title="Preview"
className={classNames("border-0 w-full flex-1 min-h-0", {
"rounded-b-lg": device === "mobile",
})}
></iframe>
{device === "mobile" && (
<div
className="shrink-0 flex items-center justify-center"
style={{ height: PHONE_HOME_INDICATOR_HEIGHT }}
>
<span className="w-24 h-1 rounded-full bg-white/70" />
</div>
)}
></iframe>
</div>
</div>
</div>
);
Expand Down