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fix(web): align floating browser preview corners #10915

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fix(web): align floating browser preview corners #10915

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ccb340d
fix(web): align floating browser preview corners
caezium Sep 9, 2026
82866d9
docs(web): explain floating preview radius alignment
caezium Sep 9, 2026
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22 changes: 17 additions & 5 deletions apps/web/src/components/preview/ThreadPreviewMiniPlayer.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,8 @@ interface Props {
readonly bottomInset: number;
}

const PREVIEW_MINI_PLAYER_CORNER_RADIUS = 12;

// Invisible grab zones straddling each edge; the cursor is the only affordance.
const RESIZE_HANDLES: ReadonlyArray<{
readonly direction: BrowserViewportResizeDirection;
Expand All @@ -59,6 +61,10 @@ const RESIZE_HANDLES: ReadonlyArray<{
{ direction: "southeast", className: "-bottom-2 -right-2 size-4 cursor-nwse-resize" },
];

/**
* Floats the thread's browser surface over chat. Native clipping and the DOM
* frame use the same radius so their separately composited edges stay aligned.
*/
export function ThreadPreviewMiniPlayer({ threadRef, tabId, bottomInset }: Props) {
const containerRef = useRef<HTMLDivElement | null>(null);
const gestureRef = useRef<PointerGesture | null>(null);
Expand Down Expand Up @@ -193,7 +199,13 @@ export function ThreadPreviewMiniPlayer({ threadRef, tabId, bottomInset }: Props
aria-label="Floating browser preview"
data-preview-mini-player={tabId}
className="pointer-events-none absolute select-none"
style={{ left: frame.x, top: frame.y, width: frame.width, height: frame.height }}
style={{
left: frame.x,
top: frame.y,
width: frame.width,
height: frame.height,
borderRadius: PREVIEW_MINI_PLAYER_CORNER_RADIUS,
}}
>
<div className="group pointer-events-auto absolute right-2 top-2 z-[49] size-3">
<div
Expand Down Expand Up @@ -267,19 +279,19 @@ export function ThreadPreviewMiniPlayer({ threadRef, tabId, bottomInset }: Props
</div>
</div>

<div className="absolute inset-0 z-[47] rounded-xl bg-muted shadow-2xl/35" />
<div className="absolute inset-0 z-[47] rounded-[inherit] bg-muted shadow-2xl/35" />
<BrowserSurfaceSlot
tabId={runtimeTabId}
visible={Boolean(desktopOverlay?.hasWebContents)}
cornerRadius={12}
cornerRadius={PREVIEW_MINI_PLAYER_CORNER_RADIUS}
zIndex={PREVIEW_MINI_PLAYER_WEBVIEW_Z_INDEX}
fitSourceContent
layoutVersion={`${frame.x}:${frame.y}`}
className="absolute inset-0"
/>
<div className="pointer-events-none absolute inset-0 z-[49] rounded-xl ring-1 ring-inset ring-border/80" />
<div className="pointer-events-none absolute inset-0 z-[49] rounded-[inherit] ring-1 ring-inset ring-border/80" />
{!desktopOverlay?.hasWebContents ? (
<div className="pointer-events-none absolute inset-0 z-[49] flex items-center justify-center rounded-xl bg-muted text-xs text-muted-foreground">
<div className="pointer-events-none absolute inset-0 z-[49] flex items-center justify-center rounded-[inherit] bg-muted text-xs text-muted-foreground">
Reconnecting preview…
</div>
) : null}
Expand Down
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