@kirz/react-native-toolkit
Version:
Toolkit to speed up React Native development
65 lines (64 loc) • 3.67 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.SnapCarousel = SnapCarousel;
var _react = _interopRequireWildcard(require("react"));
var _reactNative = require("react-native");
var _View = require("./View");
var _scale = require("../utils/scale");
function _getRequireWildcardCache(nodeInterop) { if (typeof WeakMap !== "function") return null; var cacheBabelInterop = new WeakMap(); var cacheNodeInterop = new WeakMap(); return (_getRequireWildcardCache = function (nodeInterop) { return nodeInterop ? cacheNodeInterop : cacheBabelInterop; })(nodeInterop); }
function _interopRequireWildcard(obj, nodeInterop) { if (!nodeInterop && obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(nodeInterop); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (key !== "default" && Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
function _extends() { _extends = Object.assign ? Object.assign.bind() : function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; return _extends.apply(this, arguments); }
function SnapCarousel(_ref) {
let {
items,
renderItem: originalRenderItem,
spacing = (0, _scale.scaleX)(14),
...props
} = _ref;
const [snapToOffsets, setSnapToOffsets] = (0, _react.useState)([]);
const snapToOffsetsRef = (0, _react.useRef)([]);
const handleItemLayout = (0, _react.useCallback)((e, index) => {
const itemWidth = e.nativeEvent.layout.width;
snapToOffsetsRef.current[index] = itemWidth;
if (snapToOffsetsRef.current.filter(x => !!x).length === items.length) {
setSnapToOffsets(snapToOffsetsRef.current.reduce((acc, x, index) => {
if (index === 0) {
return [x + spacing];
}
return [...acc, acc[index - 1] + x + spacing];
}, []));
}
}, [spacing, items.length]);
const renderItem = (0, _react.useCallback)(_ref2 => {
let {
index,
item,
separators
} = _ref2;
return /*#__PURE__*/_react.default.createElement(_View.View, _extends({
style: {
marginRight: index !== items.length - 1 ? spacing : 0
}
}, snapToOffsets.length !== items.length ? {
onLayout: e => handleItemLayout(e, index)
} : {}), originalRenderItem({
index,
item,
separators
}));
}, [handleItemLayout, originalRenderItem, items.length, snapToOffsets.length]);
return /*#__PURE__*/_react.default.createElement(_reactNative.FlatList, _extends({}, props, {
renderItem: renderItem,
horizontal: true,
data: items,
showsHorizontalScrollIndicator: false,
snapToOffsets: snapToOffsets,
snapToAlignment: props.snapToAlignment ?? 'start',
decelerationRate: props.decelerationRate ?? (_reactNative.Platform.OS === 'ios' ? 0.992 : 0.985),
keyboardShouldPersistTaps: "always",
keyExtractor: props.keyExtractor ?? ((item, idx) => ((item === null || item === void 0 ? void 0 : item.id) ?? idx).toString())
}));
}
//# sourceMappingURL=SnapCarousel.js.map