diff --git a/README.md b/README.md
index a1d06b9c..9fee03ef 100644
--- a/README.md
+++ b/README.md
@@ -73,6 +73,7 @@ const BasicFlow = () => ;
- `minZoom`: default: `0.5`
- `maxZoom`: default: `2`
- `defaultZoom`: default: `1`
+- `defaultPosition`: default: `[0, 0]`
- `snapToGrid`: default: `false`
- `snapGrid`: [x, y] array - default: `[16, 16]`
- `onlyRenderVisibleNodes`: default: `true`
@@ -88,7 +89,9 @@ const BasicFlow = () => ;
- `onNodeContextMenu(evt: MouseEvent, node: Node)`: node context menu
- `onConnect({ source, target })`: called when user connects two nodes
- `onLoad(reactFlowInstance)`: called after flow is initialized
-- `onMove()`: called when user pans or zooms
+- `onMove()`: called when user is panning or zooming
+- `onMoveStart()`: called when user starts panning or zooming
+- `onMoveEnd()`: called when user ends panning or zooming
- `onSelectionChange(elements: Elements)`: called when user selects one or multiple elements
#### Interaction
diff --git a/src/container/GraphView/index.tsx b/src/container/GraphView/index.tsx
index f174600d..080d3921 100644
--- a/src/container/GraphView/index.tsx
+++ b/src/container/GraphView/index.tsx
@@ -55,6 +55,7 @@ export interface GraphViewProps {
minZoom: number;
maxZoom: number;
defaultZoom: number;
+ defaultPosition: [number, number];
arrowHeadColor: string;
markerEndId?: string;
zoomOnScroll: boolean;
@@ -93,6 +94,7 @@ const GraphView = memo(
minZoom,
maxZoom,
defaultZoom,
+ defaultPosition,
arrowHeadColor,
markerEndId,
zoomOnScroll,
@@ -111,7 +113,7 @@ const GraphView = memo(
const setNodesDraggable = useStoreActions((actions) => actions.setNodesDraggable);
const setNodesConnectable = useStoreActions((actions) => actions.setNodesConnectable);
const setElementsSelectable = useStoreActions((actions) => actions.setElementsSelectable);
- const updateTransform = useStoreActions((actions) => actions.updateTransform);
+ const setInitTransform = useStoreActions((actions) => actions.setInitTransform);
const setMinMaxZoom = useStoreActions((actions) => actions.setMinMaxZoom);
const fitView = useStoreActions((actions) => actions.fitView);
const zoom = useStoreActions((actions) => actions.zoom);
@@ -144,10 +146,6 @@ const GraphView = memo(
setOnConnect(onConnect);
}
- if (defaultZoom !== 1) {
- updateTransform({ x: 0, y: 0, k: defaultZoom });
- }
-
if (rendererNode.current) {
resizeObserver = new ResizeObserver((entries) => {
for (let _ of entries) {
@@ -187,6 +185,18 @@ const GraphView = memo(
getElements,
});
}
+
+ if (d3Initialised) {
+ const initialTransform = {
+ x: defaultPosition[0],
+ y: defaultPosition[1],
+ k: defaultZoom,
+ };
+
+ if (initialTransform.x !== 0 || initialTransform.y !== 0 || initialTransform.k !== 1) {
+ setInitTransform(initialTransform);
+ }
+ }
}, [d3Initialised, onLoad]);
useEffect(() => {
diff --git a/src/container/ReactFlow/index.tsx b/src/container/ReactFlow/index.tsx
index d4a7f6fb..c69b4a69 100644
--- a/src/container/ReactFlow/index.tsx
+++ b/src/container/ReactFlow/index.tsx
@@ -63,6 +63,7 @@ export interface ReactFlowProps extends Omit, 'on
minZoom: number;
maxZoom: number;
defaultZoom: number;
+ defaultPosition: [number, number];
arrowHeadColor: string;
markerEndId?: string;
zoomOnScroll: boolean;
@@ -104,6 +105,7 @@ const ReactFlow = ({
minZoom,
maxZoom,
defaultZoom,
+ defaultPosition,
arrowHeadColor,
markerEndId,
zoomOnScroll,
@@ -147,6 +149,7 @@ const ReactFlow = ({
minZoom={minZoom}
maxZoom={maxZoom}
defaultZoom={defaultZoom}
+ defaultPosition={defaultPosition}
arrowHeadColor={arrowHeadColor}
markerEndId={markerEndId}
zoomOnScroll={zoomOnScroll}
@@ -186,6 +189,7 @@ ReactFlow.defaultProps = {
minZoom: 0.5,
maxZoom: 2,
defaultZoom: 1,
+ defaultPosition: [0, 0],
arrowHeadColor: '#bbb',
zoomOnScroll: true,
zoomOnDoubleClick: true,
diff --git a/src/store/index.ts b/src/store/index.ts
index 0f42280f..7729f9cd 100644
--- a/src/store/index.ts
+++ b/src/store/index.ts
@@ -105,6 +105,8 @@ export interface StoreModel {
updateTransform: Action;
+ setInitTransform: Action;
+
updateSize: Action;
initD3: Action;
@@ -342,6 +344,18 @@ export const storeModel: StoreModel = {
state.transform[2] = transform.k;
}),
+ setInitTransform: action((state, transform) => {
+ state.transform[0] = transform.x;
+ state.transform[1] = transform.y;
+ state.transform[2] = transform.k;
+
+ if (state.d3Selection) {
+ const updatedTransform = zoomIdentity.translate(transform.x, transform.y).scale(transform.k);
+ // we need to sync the d3 zoom transform with the updated transform
+ state.d3Selection.property('__zoom', updatedTransform);
+ }
+ }),
+
updateSize: action((state, size) => {
state.width = size.width;
state.height = size.height;