Rectangle
In this example, you can draw rectangles on a whiteboard. Click and drag to create a rectangle, and it will be added to the flow.
import { useCallback, useState } from 'react';
import {
ReactFlow,
useNodesState,
useEdgesState,
addEdge,
Controls,
Background,
Panel,
} from '@xyflow/react';
import { RectangleNode } from './RectangleNode';
import { RectangleTool } from './RectangleTool';
import '@xyflow/react/dist/style.css';
const initialNodes = [
{
id: '1',
type: 'rectangle',
position: { x: 250, y: 5 },
data: { color: '#ff7000' },
width: 150,
height: 100,
},
];
const initialEdges = [];
const nodeTypes = {
rectangle: RectangleNode,
};
export default function RectangleFlow() {
const [nodes, _, onNodesChange] = useNodesState(initialNodes);
const [edges, setEdges, onEdgesChange] = useEdgesState(initialEdges);
const onConnect = useCallback((params) => setEdges((els) => addEdge(params, els)), []);
const [isRectangleActive, setIsRectangleActive] = useState(true);
return (
<ReactFlow
nodes={nodes}
nodeTypes={nodeTypes}
edges={edges}
onNodesChange={onNodesChange}
onEdgesChange={onEdgesChange}
onConnect={onConnect}
fitView
>
<Controls />
<Background />
{isRectangleActive && <RectangleTool />}
<Panel position="top-left">
<div className="xy-theme__button-group">
<button
className={`xy-theme__button ${isRectangleActive ? 'active' : ''}`}
onClick={() => setIsRectangleActive(true)}
>
Rectangle Mode
</button>
<button
className={`xy-theme__button ${!isRectangleActive ? 'active' : ''}`}
onClick={() => setIsRectangleActive(false)}
>
Selection Mode
</button>
</div>
</Panel>
</ReactFlow>
);
}
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