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--------- Signed-off-by: Joseph Chalabi <[email protected]> Co-authored-by: Felix C. Morency <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,120 @@ | ||
| import Image from 'next/image'; | ||
| import QRCodeUtil from 'qrcode'; | ||
| import React, { FunctionComponent, ReactElement, useMemo } from 'react'; | ||
|
|
||
| const generateMatrix = ( | ||
| value: string, | ||
| errorCorrectionLevel: QRCodeUtil.QRCodeErrorCorrectionLevel | ||
| ) => { | ||
| const arr = Array.prototype.slice.call( | ||
| QRCodeUtil.create(value, { errorCorrectionLevel }).modules.data, | ||
| 0 | ||
| ); | ||
| const sqrt = Math.sqrt(arr.length); | ||
| return arr.reduce( | ||
| (rows, key, index) => | ||
| (index % sqrt === 0 ? rows.push([key]) : rows[rows.length - 1].push(key)) && rows, | ||
| [] | ||
| ); | ||
| }; | ||
|
|
||
| export const QRCode: FunctionComponent<{ | ||
| errorCorrectionLevel?: QRCodeUtil.QRCodeErrorCorrectionLevel; | ||
| logoUrl?: string; | ||
| logoSize?: number; | ||
| size?: number; | ||
| value: string; | ||
| }> = ({ errorCorrectionLevel = 'M', logoSize = 50, logoUrl, size = 280, value }) => { | ||
| const dots = useMemo(() => { | ||
| const dots: ReactElement[] = []; | ||
| const matrix = generateMatrix(value, errorCorrectionLevel); | ||
| const cellSize = size / matrix.length; | ||
| let qrList = [ | ||
| { x: 0, y: 0 }, | ||
| { x: 1, y: 0 }, | ||
| { x: 0, y: 1 }, | ||
| ]; | ||
|
|
||
| qrList.forEach(({ x, y }) => { | ||
| const x1 = (matrix.length - 7) * cellSize * x; | ||
| const y1 = (matrix.length - 7) * cellSize * y; | ||
| for (let i = 0; i < 3; i++) { | ||
| dots.push( | ||
| <rect | ||
| fill={i % 2 !== 0 ? 'white' : 'black'} | ||
| height={cellSize * (7 - i * 2)} | ||
| key={`${i}-${x}-${y}`} | ||
| rx={(i - 2) * -5 + (i === 0 ? 2 : 0)} // calculated border radius for corner squares | ||
| ry={(i - 2) * -5 + (i === 0 ? 2 : 0)} // calculated border radius for corner squares | ||
| width={cellSize * (7 - i * 2)} | ||
| x={x1 + cellSize * i} | ||
| y={y1 + cellSize * i} | ||
| /> | ||
| ); | ||
| } | ||
| }); | ||
|
|
||
| const clearArenaSize = Math.floor(logoSize / cellSize); | ||
| const matrixMiddleStart = matrix.length / 2 - clearArenaSize / 2; | ||
| const matrixMiddleEnd = matrix.length / 2 + clearArenaSize / 2 - 1; | ||
|
|
||
| matrix.forEach((row: QRCodeUtil.QRCode[], i: number) => { | ||
| row.forEach((_: any, j: number) => { | ||
| if (matrix[i][j]) { | ||
| if ( | ||
| !( | ||
| (i < 7 && j < 7) || | ||
| (i > matrix.length - 8 && j < 7) || | ||
| (i < 7 && j > matrix.length - 8) | ||
| ) | ||
| ) { | ||
| if ( | ||
| !( | ||
| i > matrixMiddleStart && | ||
| i < matrixMiddleEnd && | ||
| j > matrixMiddleStart && | ||
| j < matrixMiddleEnd | ||
| ) | ||
| ) { | ||
| dots.push( | ||
| <circle | ||
| cx={i * cellSize + cellSize / 2} | ||
| cy={j * cellSize + cellSize / 2} | ||
| fill="black" | ||
| key={`circle-${i}-${j}`} | ||
| r={cellSize / 3} // calculate size of single dots | ||
| /> | ||
| ); | ||
| } | ||
| } | ||
| } | ||
| }); | ||
| }); | ||
|
|
||
| return dots; | ||
| }, [errorCorrectionLevel, logoSize, size, value]); | ||
|
|
||
| const logoPosition = size / 2 - logoSize / 2; | ||
|
|
||
| return ( | ||
| <div className="relative flex items-center justify-center rounded-xl bg-white p-4"> | ||
| <div className="relative" style={{ height: size, width: size }}> | ||
| {logoUrl && ( | ||
| <div | ||
| className="absolute flex rounded-lg justify-center" | ||
| style={{ | ||
| top: logoPosition, | ||
| width: size, | ||
| }} | ||
| > | ||
| <Image height={logoSize} src={logoUrl} width={logoSize} alt="Wallet logo" /> | ||
| </div> | ||
| )} | ||
| <svg height={size} width={size}> | ||
| <rect fill="transparent" height={size} width={size} /> | ||
| {dots} | ||
| </svg> | ||
| </div> | ||
| </div> | ||
| ); | ||
| }; |
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