react-native-dot-typing
Version:
React-rative dot typing animation component
83 lines (82 loc) • 3.38 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (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 });
exports.DotTypingAnimation = void 0;
const React = __importStar(require("react"));
const react_native_1 = require("react-native");
function DotTypingAnimation(props) {
const { style = {}, dotStyles = {}, dotColor = "black", dotMargin = 3, dotAmplitude = 2, dotSpeed = 0.15, show = true, dotRadius = 2.5, dotY = 6, dotX = 12, } = props;
const [animationParams, setAnimationParams] = React.useState({
time: dotSpeed,
radius1: dotRadius + dotAmplitude * Math.sin(0),
radius2: dotRadius + dotAmplitude * Math.sin(-1),
radius3: dotRadius + dotAmplitude * Math.sin(-2),
});
const frameAnimationRequest = React.useRef();
const getStyles = ({ x, y, radius }) => ({
left: x,
top: y,
width: radius * 2,
height: radius * 2,
borderRadius: radius,
backgroundColor: dotColor,
});
const renderDot = (dotProps) => <react_native_1.View style={[styles.dot, dotStyles, getStyles(dotProps)]}/>;
const animation = () => {
setAnimationParams((prevAnimationParams) => ({
radius1: dotRadius + dotAmplitude * Math.sin(prevAnimationParams.time),
radius2: dotRadius + dotAmplitude * Math.sin(prevAnimationParams.time - 1),
radius3: dotRadius + dotAmplitude * Math.sin(prevAnimationParams.time - 2),
time: prevAnimationParams.time + dotSpeed,
}));
frameAnimationRequest.current = requestAnimationFrame(animation);
};
React.useEffect(() => {
frameAnimationRequest.current = requestAnimationFrame(animation);
return () => cancelAnimationFrame(frameAnimationRequest.current);
}, []);
if (!show) {
return null;
}
return (<react_native_1.View style={style}>
{renderDot({
x: dotX - dotRadius - dotMargin - animationParams.radius1,
y: dotY - animationParams.radius1,
radius: animationParams.radius1,
})}
{renderDot({
x: dotX - animationParams.radius2,
y: dotY - animationParams.radius2,
radius: animationParams.radius2,
})}
{renderDot({
x: dotX + dotRadius + dotMargin - animationParams.radius3,
y: dotY - animationParams.radius3,
radius: animationParams.radius3,
})}
</react_native_1.View>);
}
exports.DotTypingAnimation = DotTypingAnimation;
const styles = react_native_1.StyleSheet.create({
dot: {
position: "absolute",
},
});