99 lines
4.6 KiB
TypeScript
99 lines
4.6 KiB
TypeScript
/*
|
|
┌──────────────────────────────────────────────────────────────────────────────┐
|
|
│ @author: Davidson Gomes │
|
|
│ @file: /app/agents/workflows/HelperLines.tsx │
|
|
│ Developed by: Davidson Gomes │
|
|
│ Creation date: May 13, 2025 │
|
|
│ Contact: contato@evolution-api.com │
|
|
├──────────────────────────────────────────────────────────────────────────────┤
|
|
│ @copyright © Evolution API 2025. All rights reserved. │
|
|
│ Licensed under the Apache License, Version 2.0 │
|
|
│ │
|
|
│ You may not use this file except in compliance with the License. │
|
|
│ You may obtain a copy of the License at │
|
|
│ │
|
|
│ http://www.apache.org/licenses/LICENSE-2.0 │
|
|
│ │
|
|
│ Unless required by applicable law or agreed to in writing, software │
|
|
│ distributed under the License is distributed on an "AS IS" BASIS, │
|
|
│ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. │
|
|
│ See the License for the specific language governing permissions and │
|
|
│ limitations under the License. │
|
|
├──────────────────────────────────────────────────────────────────────────────┤
|
|
│ @important │
|
|
│ For any future changes to the code in this file, it is recommended to │
|
|
│ include, together with the modification, the information of the developer │
|
|
│ who changed it and the date of modification. │
|
|
└──────────────────────────────────────────────────────────────────────────────┘
|
|
*/
|
|
import { ReactFlowState, useStore } from "@xyflow/react";
|
|
import { CSSProperties, useEffect, useRef } from "react";
|
|
|
|
const canvasStyle: CSSProperties = {
|
|
width: "100%",
|
|
height: "100%",
|
|
position: "absolute",
|
|
zIndex: 10,
|
|
pointerEvents: "none",
|
|
};
|
|
|
|
const storeSelector = (state: ReactFlowState) => ({
|
|
width: state.width,
|
|
height: state.height,
|
|
transform: state.transform,
|
|
});
|
|
|
|
export type HelperLinesProps = {
|
|
horizontal?: number;
|
|
vertical?: number;
|
|
};
|
|
|
|
// a simple component to display the helper lines
|
|
// it puts a canvas on top of the React Flow pane and draws the lines using the canvas API
|
|
function HelperLinesRenderer({ horizontal, vertical }: HelperLinesProps) {
|
|
const { width, height, transform } = useStore(storeSelector);
|
|
|
|
const canvasRef = useRef<HTMLCanvasElement>(null);
|
|
|
|
useEffect(() => {
|
|
const canvas = canvasRef.current;
|
|
const ctx = canvas?.getContext("2d");
|
|
|
|
if (!ctx || !canvas) {
|
|
return;
|
|
}
|
|
|
|
const dpi = window.devicePixelRatio;
|
|
canvas.width = width * dpi;
|
|
canvas.height = height * dpi;
|
|
|
|
ctx.scale(dpi, dpi);
|
|
ctx.clearRect(0, 0, width, height);
|
|
ctx.strokeStyle = "#1d5ade";
|
|
ctx.lineWidth = 1;
|
|
ctx.setLineDash([5, 5]);
|
|
|
|
if (typeof vertical === "number") {
|
|
ctx.moveTo(vertical * transform[2] + transform[0], 0);
|
|
ctx.lineTo(vertical * transform[2] + transform[0], height);
|
|
ctx.stroke();
|
|
}
|
|
|
|
if (typeof horizontal === "number") {
|
|
ctx.moveTo(0, horizontal * transform[2] + transform[1]);
|
|
ctx.lineTo(width, horizontal * transform[2] + transform[1]);
|
|
ctx.stroke();
|
|
}
|
|
}, [width, height, transform, horizontal, vertical]);
|
|
|
|
return (
|
|
<canvas
|
|
ref={canvasRef}
|
|
className="react-flow__canvas"
|
|
style={canvasStyle}
|
|
/>
|
|
);
|
|
}
|
|
|
|
export default HelperLinesRenderer;
|