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| 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 | 3x 4x 4x 4x 4x 4x 1x 1x 1x 4x 4x 4x 4x 4x 4x 4x 4x 3x 4x 3x 3x 3x 3x 4x 3x 3x | import useDrawOnCanvas from "@features/Merchants/MerchantSidePanel/hooks/useDrawOnCanvas";
import { Box } from "@mui/material";
import GiveButton from "@shared/Button/GiveButton";
import GiveText from "@shared/Text/GiveText";
import { styled, useAppTheme } from "@theme/v2/Provider";
import { useEffect, useState } from "react";
type Props = {
height: number;
width: number;
setDataURL: React.Dispatch<React.SetStateAction<string>>;
};
const SignatureCanvas = ({ height, width, setDataURL }: Props) => {
const { palette } = useAppTheme();
const [isCleared, setIsCleared] = useState(false);
const containerHeight = height + 4; // 4 is for border left + border right width
const containerWidth = width + 4; // 4 is for border left + border right width
const onSave = (canvas: HTMLCanvasElement) => {
const dataURL = canvas.toDataURL("image/png");
setDataURL(dataURL || "");
Iif (isCleared) setIsCleared(false);
};
const { canvasRef, onDrawStart, onDraw, onDrawEnd, isDrawing, clear } =
useDrawOnCanvas({ height, width, onSave });
const clearCanvas = () => {
setIsCleared(true);
clear();
setDataURL("");
};
// While drawing, if the user hovers over the clear button, we want to stop drawing so that the drawing doesn't overlap with the button
const handleMouseEnter = () => {
if (!isDrawing) return;
onDrawEnd();
};
useEffect(() => {
const t = setTimeout(() => {
setIsCleared(false);
}, 50);
return () => clearTimeout(t);
});
const isEmpty = isCanvasBlank(canvasRef.current);
return (
<Container
sx={{
height: containerHeight,
width: containerWidth,
border: `2px solid ${
isDrawing ? palette.primitive?.blue[100] : palette.border?.primary
}`,
}}
>
<canvas
onMouseDown={onDrawStart}
onMouseUp={onDrawEnd}
onMouseMove={onDraw}
onTouchStart={onDrawStart}
onTouchEnd={onDrawEnd}
onTouchMove={onDraw}
ref={canvasRef}
data-testid="signature-canvas"
/>
{!isDrawing && isEmpty && (
<BeginText variant="bodyL">Click to begin</BeginText>
)}
{(isDrawing || !isEmpty) && (
<ClearButton
variant="filled"
color="light"
label="Clear"
onClick={clearCanvas}
onMouseEnter={handleMouseEnter}
/>
)}
</Container>
);
};
const isCanvasBlank = (canvas?: HTMLCanvasElement | null) => {
if (!canvas) return true;
const blank = document.createElement("canvas");
blank.width = canvas.width;
blank.height = canvas.height;
return canvas.toDataURL() === blank.toDataURL();
};
const Container = styled(Box)(() => ({
position: "relative",
borderRadius: "12px",
}));
const ClearButton = styled(GiveButton)(() => ({
position: "absolute",
right: "16px",
bottom: "16px",
}));
const BeginText = styled(GiveText)(({ theme }) => ({
color: theme.palette.text.secondary,
position: "absolute",
top: "50%",
left: "50%",
transform: "translate(-50%, -50%)",
pointerEvents: "none",
}));
export default SignatureCanvas;
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