antd-mobile
Version:
<div align="center">
173 lines (172 loc) • 7.51 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.Slide = void 0;
var _react = _interopRequireWildcard(require("react"));
var _web = require("@react-spring/web");
var _ahooks = require("ahooks");
var _rubberband = require("../../utils/rubberband");
var _useDragAndPinch = require("../../utils/use-drag-and-pinch");
var _bound = require("../../utils/bound");
var mat = _interopRequireWildcard(require("../../utils/matrix"));
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; }
const classPrefix = `adm-image-viewer`;
const Slide = props => {
const {
dragLockRef,
maxZoom
} = props;
const controlRef = (0, _react.useRef)(null);
const imgRef = (0, _react.useRef)(null);
const [{
matrix
}, api] = (0, _web.useSpring)(() => ({
matrix: mat.create(),
config: {
tension: 200
}
}));
const controlSize = (0, _ahooks.useSize)(controlRef);
const imgSize = (0, _ahooks.useSize)(imgRef);
const pinchLockRef = (0, _react.useRef)(false);
const boundMatrix = (nextMatrix, type, last = false) => {
if (!controlSize || !imgSize) return nextMatrix;
const controlLeft = -controlSize.width / 2;
const controlTop = -controlSize.height / 2;
const imgLeft = -imgSize.width / 2;
const imgTop = -imgSize.height / 2;
const zoom = mat.getScaleX(nextMatrix);
const scaledImgWidth = zoom * imgSize.width;
const scaledImgHeight = zoom * imgSize.height;
const [x, y] = mat.apply(nextMatrix, [imgLeft, imgTop]);
if (type === 'translate') {
let boundedX = x;
let boundedY = y;
if (scaledImgWidth > controlSize.width) {
const minX = controlLeft - (scaledImgWidth - controlSize.width);
const maxX = controlLeft;
boundedX = last ? (0, _bound.bound)(x, minX, maxX) : (0, _rubberband.rubberbandIfOutOfBounds)(x, minX, maxX, zoom * 50);
} else {
boundedX = -scaledImgWidth / 2;
}
if (scaledImgHeight > controlSize.height) {
const minY = controlTop - (scaledImgHeight - controlSize.height);
const maxY = controlTop;
boundedY = last ? (0, _bound.bound)(y, minY, maxY) : (0, _rubberband.rubberbandIfOutOfBounds)(y, minY, maxY, zoom * 50);
} else {
boundedY = -scaledImgHeight / 2;
}
return mat.translate(nextMatrix, boundedX - x, boundedY - y);
}
if (type === 'scale' && last) {
const [boundedX, boundedY] = [scaledImgWidth > controlSize.width ? (0, _bound.bound)(x, controlLeft - (scaledImgWidth - controlSize.width), controlLeft) : -scaledImgWidth / 2, scaledImgHeight > controlSize.height ? (0, _bound.bound)(y, controlTop - (scaledImgHeight - controlSize.height), controlTop) : -scaledImgHeight / 2];
return mat.translate(nextMatrix, boundedX - x, boundedY - y);
}
return nextMatrix;
};
(0, _useDragAndPinch.useDragAndPinch)({
onDrag: state => {
if (state.first) return;
if (state.pinching) return state.cancel();
if (state.tap && state.elapsedTime > 0 && state.elapsedTime < 1000) {
// 判断点击时间>0是为了过滤掉非正常操作，例如用户长按选择图片之后的取消操作（也是一次点击）
props.onTap();
return;
}
const currentZoom = mat.getScaleX(matrix.get());
if (dragLockRef) {
dragLockRef.current = currentZoom !== 1;
}
if (!pinchLockRef.current && currentZoom <= 1) {
api.start({
matrix: mat.create()
});
} else {
const currentMatrix = matrix.get();
const offset = [state.offset[0] - mat.getTranslateX(currentMatrix), state.offset[1] - mat.getTranslateY(currentMatrix)];
const nextMatrix = mat.translate(currentMatrix, ...(state.last ? [offset[0] + state.velocity[0] * state.direction[0] * 200, offset[1] + state.velocity[1] * state.direction[1] * 200] : offset));
api.start({
matrix: boundMatrix(nextMatrix, 'translate', state.last),
immediate: !state.last
});
}
},
onPinch: state => {
var _a;
pinchLockRef.current = !state.last;
const [d] = state.offset;
if (d < 0) return;
let mergedMaxZoom;
if (maxZoom === 'auto') {
mergedMaxZoom = controlSize && imgSize ? Math.max(controlSize.height / imgSize.height, controlSize.width / imgSize.width) : 1;
} else {
mergedMaxZoom = maxZoom;
}
const nextZoom = state.last ? (0, _bound.bound)(d, 1, mergedMaxZoom) : d;
(_a = props.onZoomChange) === null || _a === void 0 ? void 0 : _a.call(props, nextZoom);
if (state.last && nextZoom <= 1) {
api.start({
matrix: mat.create()
});
if (dragLockRef) {
dragLockRef.current = false;
}
} else {
if (!controlSize) return;
const currentMatrix = matrix.get();
const currentZoom = mat.getScaleX(currentMatrix);
const originOffsetX = state.origin[0] - controlSize.width / 2;
const originOffsetY = state.origin[1] - controlSize.height / 2;
let nextMatrix = mat.translate(currentMatrix, -originOffsetX, -originOffsetY);
nextMatrix = mat.scale(nextMatrix, nextZoom / currentZoom);
nextMatrix = mat.translate(nextMatrix, originOffsetX, originOffsetY);
api.start({
matrix: boundMatrix(nextMatrix, 'scale', state.last),
immediate: !state.last
});
if (dragLockRef) {
dragLockRef.current = true;
}
}
}
}, {
target: controlRef,
drag: {
// filterTaps: true,
from: () => [mat.getTranslateX(matrix.get()), mat.getTranslateY(matrix.get())],
pointer: {
touch: true
}
},
pinch: {
from: () => [mat.getScaleX(matrix.get()), 0],
pointer: {
touch: true
}
}
});
return _react.default.createElement("div", {
className: `${classPrefix}-slide`,
onPointerMove: e => {
if (mat.getScaleX(matrix.get()) !== 1) {
e.stopPropagation();
}
}
}, _react.default.createElement("div", {
className: `${classPrefix}-control`,
ref: controlRef
}, _react.default.createElement(_web.animated.div, {
className: `${classPrefix}-image-wrapper`,
style: {
matrix
}
}, _react.default.createElement("img", {
ref: imgRef,
src: props.image,
draggable: false,
alt: props.image
}))));
};
exports.Slide = Slide;