@grandlinex/react-components
Version:
201 lines (200 loc) • 8.46 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
const react_1 = __importStar(require("react"));
const react_icons_1 = require("@grandlinex/react-icons");
const Grid_1 = require("../Grid/Grid");
const IconButton_1 = require("../button/IconButton");
const Draw = ({ width = window.innerWidth, height = window.innerHeight, onChange, }) => {
const canvasRef = (0, react_1.useRef)(null);
const [color, setColor] = (0, react_1.useState)('blue');
const [lineWidth, setLineWidth] = (0, react_1.useState)(5);
const [data, setData] = (0, react_1.useState)([]);
const [isPainting, setIsPainting] = (0, react_1.useState)(false);
const [mousePosition, setMousePosition] = (0, react_1.useState)(undefined);
const getCoordinates = (event) => {
if (!canvasRef.current) {
return undefined;
}
const canvas = canvasRef.current;
const { left, top } = canvas.getBoundingClientRect();
const leftR = Math.round(left);
const topR = Math.round(top);
if (window.TouchEvent && event instanceof TouchEvent) {
return {
x: event.changedTouches[0].pageX - leftR,
y: event.changedTouches[0].pageY - topR,
};
}
if (event instanceof MouseEvent) {
return {
x: event.pageX - leftR,
y: event.pageY - topR,
};
}
return {
x: 0,
y: 0,
};
};
const startPaint = (0, react_1.useCallback)((event) => {
const coordinates = getCoordinates(event);
if (coordinates) {
setMousePosition(coordinates);
setIsPainting(true);
}
}, []);
(0, react_1.useEffect)(() => {
if (!canvasRef.current) {
return undefined;
}
const canvas = canvasRef.current;
canvas.addEventListener('mousedown', startPaint);
canvas.addEventListener('touchstart', startPaint);
return () => {
canvas.removeEventListener('mousedown', startPaint);
canvas.removeEventListener('touchstart', startPaint);
};
}, [startPaint]);
const drawLine = (originalMousePosition, newMousePosition) => {
if (!canvasRef.current) {
return;
}
const canvas = canvasRef.current;
const context = canvas.getContext('2d');
if (context) {
context.strokeStyle = color;
context.lineJoin = 'round';
context.lineWidth = lineWidth;
context.beginPath();
context.moveTo(originalMousePosition.x, originalMousePosition.y);
context.lineTo(newMousePosition.x, newMousePosition.y);
context.closePath();
context.stroke();
}
};
const paint = (0, react_1.useCallback)((event) => {
if (isPainting) {
const newMousePosition = getCoordinates(event);
if (mousePosition && newMousePosition) {
drawLine(mousePosition, newMousePosition);
setMousePosition(newMousePosition);
}
}
}, [isPainting, mousePosition]);
const exitPaint = (0, react_1.useCallback)(() => {
setIsPainting(false);
setMousePosition(undefined);
}, []);
(0, react_1.useEffect)(() => {
if (!isPainting && canvasRef.current) {
const dat = canvasRef.current.toDataURL();
setData(data.concat(dat));
onChange?.(dat);
}
}, [isPainting]);
(0, react_1.useEffect)(() => {
if (!canvasRef.current) {
return undefined;
}
const canvas = canvasRef.current;
canvas.addEventListener('mousemove', paint);
canvas.addEventListener('touchmove', paint);
return () => {
canvas.removeEventListener('mousemove', paint);
canvas.removeEventListener('touchmove', paint);
};
}, [paint]);
(0, react_1.useEffect)(() => {
if (!canvasRef.current) {
return undefined;
}
const canvas = canvasRef.current;
canvas.addEventListener('mouseup', exitPaint);
canvas.addEventListener('mouseleave', exitPaint);
canvas.addEventListener('touchend', exitPaint);
return () => {
canvas.removeEventListener('mouseup', exitPaint);
canvas.removeEventListener('mouseleave', exitPaint);
canvas.removeEventListener('touchend', exitPaint);
};
}, [exitPaint]);
return (react_1.default.createElement(Grid_1.Grid, { className: "glx-draw" },
react_1.default.createElement(Grid_1.Grid, { className: "glx-draw--header glx-flex-wrap", flex: true, flexR: true, gap: 8, vCenter: true, style: {
width,
} },
react_1.default.createElement(IconButton_1.IconButton, { disabled: data.length < 2, onClick: () => {
const canvas = canvasRef.current;
if (canvas) {
const context = canvas.getContext('2d');
if (context) {
const img = new Image();
img.onload = () => {
context.clearRect(0, 0, canvas.width, canvas.height);
context.drawImage(img, 0, 0);
};
const x = data.slice(0, data.length - 1);
img.src = x[x.length - 1];
onChange?.(x[x.length - 1]);
setData(x);
}
}
} },
react_1.default.createElement(react_icons_1.IOArrowUndoCircle, null)),
[
'blue',
'red',
'green',
'yellow',
'orange',
'cyan',
'pink',
'purple',
'black',
].map((x) => (react_1.default.createElement(IconButton_1.IconButton, { key: `color_${x}`, color: x, onClick: () => {
setColor(x);
} },
react_1.default.createElement(react_icons_1.IOColorFill, null)))),
react_1.default.createElement(IconButton_1.IconButton, { onClick: () => {
setColor('white');
} },
react_1.default.createElement(react_icons_1.IOColorFill, null)),
react_1.default.createElement("div", null, "Current color:"),
react_1.default.createElement("div", { style: {
width: '50px',
height: '25px',
backgroundColor: color,
} }),
react_1.default.createElement("div", null, "Line width:"),
react_1.default.createElement("div", null,
react_1.default.createElement("input", { type: "range", min: 1, step: 1, max: 40, value: lineWidth, onChange: (e) => {
setLineWidth(parseInt(e.target.value, 10));
} })),
react_1.default.createElement("div", null,
lineWidth,
"px")),
react_1.default.createElement("canvas", { style: { border: '1px solid white' }, ref: canvasRef, height: height, width: width })));
};
exports.default = Draw;