File size: 3,144 Bytes
f56a29b | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 | import {
BaseEdge,
type EdgeProps,
getBezierPath,
getSimpleBezierPath,
type InternalNode,
type Node,
Position,
useInternalNode,
} from '@xyflow/react';
const Temporary = ({
id,
sourceX,
sourceY,
targetX,
targetY,
sourcePosition,
targetPosition,
}: EdgeProps) => {
const [edgePath] = getSimpleBezierPath({
sourceX,
sourceY,
sourcePosition,
targetX,
targetY,
targetPosition,
});
return (
<BaseEdge
className="stroke-1 stroke-ring"
id={id}
path={edgePath}
style={{
strokeDasharray: '5, 5',
}}
/>
);
};
const getHandleCoordsByPosition = (node: InternalNode<Node>, handlePosition: Position) => {
// Choose the handle type based on position - Left is for target, Right is for source
const handleType = handlePosition === Position.Left ? 'target' : 'source';
const handle = node.internals.handleBounds?.[handleType]?.find(
(h) => h.position === handlePosition,
);
if (!handle) {
return [0, 0] as const;
}
let offsetX = handle.width / 2;
let offsetY = handle.height / 2;
// this is a tiny detail to make the markerEnd of an edge visible.
// The handle position that gets calculated has the origin top-left, so depending which side we are using, we add a little offset
// when the handlePosition is Position.Right for example, we need to add an offset as big as the handle itself in order to get the correct position
switch (handlePosition) {
case Position.Left:
offsetX = 0;
break;
case Position.Right:
offsetX = handle.width;
break;
case Position.Top:
offsetY = 0;
break;
case Position.Bottom:
offsetY = handle.height;
break;
default:
throw new Error(`Invalid handle position: ${handlePosition}`);
}
const x = node.internals.positionAbsolute.x + handle.x + offsetX;
const y = node.internals.positionAbsolute.y + handle.y + offsetY;
return [x, y] as const;
};
const getEdgeParams = (source: InternalNode<Node>, target: InternalNode<Node>) => {
const sourcePos = Position.Right;
const [sx, sy] = getHandleCoordsByPosition(source, sourcePos);
const targetPos = Position.Left;
const [tx, ty] = getHandleCoordsByPosition(target, targetPos);
return {
sx,
sy,
tx,
ty,
sourcePos,
targetPos,
};
};
const Animated = ({ id, source, target, markerEnd, style }: EdgeProps) => {
const sourceNode = useInternalNode(source);
const targetNode = useInternalNode(target);
if (!(sourceNode && targetNode)) {
return null;
}
const { sx, sy, tx, ty, sourcePos, targetPos } = getEdgeParams(sourceNode, targetNode);
const [edgePath] = getBezierPath({
sourceX: sx,
sourceY: sy,
sourcePosition: sourcePos,
targetX: tx,
targetY: ty,
targetPosition: targetPos,
});
return (
<>
<BaseEdge id={id} markerEnd={markerEnd} path={edgePath} style={style} />
<circle fill="var(--primary)" r="4">
<animateMotion dur="2s" path={edgePath} repeatCount="indefinite" />
</circle>
</>
);
};
export const Edge = {
Temporary,
Animated,
};
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