Fix fit-to-screen drag: use newItem.x/y grid coords instead of mouse pixels

Replace getBoundingClientRect+clientX/Y with newItem.x/y from react-grid-layout.
With noCompactor, newItem reports the free grid position where the element was
dropped — reliable across all rows without pixel math or scroll issues.

Also remove handleFitDrag/fitDragRef (no longer needed) and generate a full
snapBack layout so displaced items snap back correctly on no-op drops.

https://claude.ai/code/session_01Cu7YDRKZrYX3sBs6g9w2dy
This commit is contained in:
Claude 2026-03-22 05:37:14 +00:00
parent 8fc7f6bdb7
commit 95b9b0b7b9
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@ -468,41 +468,24 @@ export default function DraggableGridLayout({
}, [fitToScreen, fitGridParams, cameras, includeBirdseye, birdseyeConfig]);
const [fitLayoutOverride, setFitLayoutOverride] = useState<Layout | undefined>();
const fitDragRef = useRef<string | null>(null);
useEffect(() => {
setFitLayoutOverride(undefined);
}, [fitGridParams, cameras, includeBirdseye]);
const handleFitDrag = useCallback(
(
_layout: Layout,
_oldItem: LayoutItem | null,
newItem: LayoutItem | null,
) => {
if (newItem) {
fitDragRef.current = newItem.i;
}
},
[],
);
const handleFitDragStop = useCallback(
(
_layout: Layout,
_oldItem: LayoutItem | null,
newItem: LayoutItem | null,
_placeholder: LayoutItem | null,
event: Event,
_event: Event,
) => {
if (!fitToScreen || !fitGridParams) return;
if (!fitToScreen || !fitGridParams || !newItem) return;
const w = fitGridParams.gridUnitsPerCam;
const colsPerRow = fitGridParams.colsPerRow;
const draggedId = fitDragRef.current ?? newItem?.i;
fitDragRef.current = null;
if (!draggedId) return;
const draggedId = newItem.i;
const currentOrder = fitLayoutOverride ?? fitLayout ?? [];
const orderedNames = [...currentOrder]
@ -512,24 +495,11 @@ export default function DraggableGridLayout({
})
.map((item) => item.i);
const gridEl = containerRef.current?.querySelector(
".grid-layout",
) as HTMLElement | null;
if (!gridEl) return;
const mouseEvent = event as MouseEvent;
const rect = gridEl.getBoundingClientRect();
const mouseRelX = mouseEvent.clientX - rect.left;
const mouseRelY = mouseEvent.clientY - rect.top;
const cellWidthPx = rect.width / colsPerRow;
const cellHeightPx = cellHeight * w;
const targetCol = Math.max(
0,
Math.min(Math.floor(mouseRelX / cellWidthPx), colsPerRow - 1),
Math.min(Math.round(newItem.x / w), colsPerRow - 1),
);
const targetRow = Math.max(0, Math.floor(mouseRelY / cellHeightPx));
const targetRow = Math.max(0, Math.round(newItem.y / w));
const totalRows = Math.ceil(orderedNames.length / colsPerRow);
const clampedRow = Math.min(targetRow, totalRows - 1);
const targetIndex = Math.min(
@ -538,8 +508,16 @@ export default function DraggableGridLayout({
);
const sourceIndex = orderedNames.indexOf(draggedId);
const snapBack = orderedNames.map((name, index) => ({
i: name,
x: (index % colsPerRow) * w,
y: Math.floor(index / colsPerRow) * w,
w,
h: w,
}));
if (sourceIndex === -1 || sourceIndex === targetIndex) {
setFitLayoutOverride((prev) => (prev ? [...prev] : prev));
setFitLayoutOverride(snapBack);
return;
}
@ -559,7 +537,7 @@ export default function DraggableGridLayout({
setFitLayoutOverride(normalized);
},
[fitToScreen, fitGridParams, fitLayoutOverride, fitLayout, cellHeight, containerRef],
[fitToScreen, fitGridParams, fitLayoutOverride, fitLayout],
);
const activeGridLayout = useMemo(() => {
@ -941,7 +919,6 @@ export default function DraggableGridLayout({
dragConfig={{
enabled: isEditMode,
}}
onDrag={fitToScreen ? handleFitDrag : undefined}
onDragStop={fitToScreen ? handleFitDragStop : handleLayoutChange}
onResize={handleResize}
onResizeStart={() => setShowCircles(false)}