@orca-fe/pdf-viewer
Version:
PDF Viewer
956 lines (938 loc) • 50.2 kB
JavaScript
;
function _typeof(o) { "@babel/helpers - typeof"; return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) { return typeof o; } : function (o) { return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o; }, _typeof(o); }
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.usePdfViewerRef = exports.default = void 0;
var _tools = require("@orca-fe/tools");
var _ahooks = require("ahooks");
var _react = _interopRequireWildcard(require("react"));
var _hooks = require("@orca-fe/hooks");
var _classnames = _interopRequireDefault(require("classnames"));
var _pdfjsDistBrowserify = _interopRequireWildcard(require("@orca-fe/pdfjs-dist-browserify"));
var pdfjsLib = _pdfjsDistBrowserify;
var _pocket = require("@orca-fe/pocket");
var _fileSaver = require("file-saver");
var _icons = require("@ant-design/icons");
var _context6 = _interopRequireWildcard(require("./context"));
var _PDFPage = _interopRequireDefault(require("./PDFPage"));
var _utils = require("./utils");
var _ZoomAndPageController = _interopRequireDefault(require("./ZoomAndPageController"));
var _PDFToolbar = _interopRequireDefault(require("./PDFToolbar"));
var _PDFViewer = _interopRequireDefault(require("./PDFViewer.style"));
var _context7 = require("./locale/context");
var _zh_CN = _interopRequireDefault(require("./locale/zh_CN"));
var _useCollector = _interopRequireDefault(require("./useCollector"));
var _jsxRuntime = require("react/jsx-runtime");
var _excluded = ["className", "pageGap", "maxZoom", "minZoom", "renderPageCover", "onZoomChange", "onPageScroll", "children", "emptyTips", "loadingTips", "title", "hideToolbar", "defaultTitle", "defaultZoom", "dropFile", "pdfJsParams", "onPageChange", "locale", "outputScale", "renderAllPages", "workerSrc"];
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _getRequireWildcardCache(e) { if ("function" != typeof WeakMap) return null; var r = new WeakMap(), t = new WeakMap(); return (_getRequireWildcardCache = function _getRequireWildcardCache(e) { return e ? t : r; })(e); }
function _interopRequireWildcard(e, r) { if (!r && e && e.__esModule) return e; if (null === e || "object" != _typeof(e) && "function" != typeof e) return { default: e }; var t = _getRequireWildcardCache(r); if (t && t.has(e)) return t.get(e); var n = { __proto__: null }, a = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var u in e) if ("default" !== u && Object.prototype.hasOwnProperty.call(e, u)) { var i = a ? Object.getOwnPropertyDescriptor(e, u) : null; i && (i.get || i.set) ? Object.defineProperty(n, u, i) : n[u] = e[u]; } return n.default = e, t && t.set(e, n), n; }
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
function _defineProperty(obj, key, value) { key = _toPropertyKey(key); if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == _typeof(i) ? i : String(i); }
function _toPrimitive(t, r) { if ("object" != _typeof(t) || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != _typeof(i)) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
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function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }
function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }
function _objectWithoutProperties(source, excluded) { if (source == null) return {}; var target = _objectWithoutPropertiesLoose(source, excluded); var key, i; if (Object.getOwnPropertySymbols) { var sourceSymbolKeys = Object.getOwnPropertySymbols(source); for (i = 0; i < sourceSymbolKeys.length; i++) { key = sourceSymbolKeys[i]; if (excluded.indexOf(key) >= 0) continue; if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue; target[key] = source[key]; } } return target; }
function _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) arr2[i] = arr[i]; return arr2; }
function _iterableToArrayLimit(r, l) { var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (null != t) { var e, n, i, u, a = [], f = !0, o = !1; try { if (i = (t = t.call(r)).next, 0 === l) { if (Object(t) !== t) return; f = !1; } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0); } catch (r) { o = !0, n = r; } finally { try { if (!f && null != t.return && (u = t.return(), Object(u) !== u)) return; } finally { if (o) throw n; } } return a; } }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; } /* eslint-disable max-lines */ /* eslint-disable @typescript-eslint/no-explicit-any */ // import * as pdfjsWorker from '@orca-fe/pdfjs-dist-browserify/build/pdf.worker';
var ef = function ef() {
return undefined;
};
var round001 = (0, _tools.roundBy)(0.001);
var DefaultLoadingTips = function DefaultLoadingTips() {
var _useLocale = (0, _context7.useLocale)(_zh_CN.default),
_useLocale2 = _slicedToArray(_useLocale, 1),
l = _useLocale2[0];
return /*#__PURE__*/(0, _jsxRuntime.jsx)("div", {
className: "pdf-viewer-default-loading-tips",
children: l.loadingTips
});
};
var DefaultEmptyTips = function DefaultEmptyTips() {
var _useLocale3 = (0, _context7.useLocale)(_zh_CN.default),
_useLocale4 = _slicedToArray(_useLocale3, 1),
l = _useLocale4[0];
return /*#__PURE__*/(0, _jsxRuntime.jsx)("div", {
className: "pdf-viewer-default-empty-tips",
children: l.loadTips
});
};
// 使用全局变量
var isWorkerLoaded = false;
var PDFViewer = /*#__PURE__*/_react.default.forwardRef(function (props, pRef) {
var _props$className = props.className,
className = _props$className === void 0 ? '' : _props$className,
_props$pageGap = props.pageGap,
pageGap = _props$pageGap === void 0 ? 24 : _props$pageGap,
_props$maxZoom = props.maxZoom,
maxZoom = _props$maxZoom === void 0 ? 3 : _props$maxZoom,
_props$minZoom = props.minZoom,
minZoom = _props$minZoom === void 0 ? -4 : _props$minZoom,
_props$renderPageCove = props.renderPageCover,
renderPageCover = _props$renderPageCove === void 0 ? ef : _props$renderPageCove,
_props$onZoomChange = props.onZoomChange,
onZoomChange = _props$onZoomChange === void 0 ? ef : _props$onZoomChange,
onPageScroll = props.onPageScroll,
children = props.children,
_props$emptyTips = props.emptyTips,
emptyTips = _props$emptyTips === void 0 ? /*#__PURE__*/(0, _jsxRuntime.jsx)(DefaultEmptyTips, {}) : _props$emptyTips,
_props$loadingTips = props.loadingTips,
loadingTips = _props$loadingTips === void 0 ? /*#__PURE__*/(0, _jsxRuntime.jsx)(DefaultLoadingTips, {}) : _props$loadingTips,
_title = props.title,
hideToolbar = props.hideToolbar,
defaultTitle = props.defaultTitle,
_props$defaultZoom = props.defaultZoom,
defaultZoom = _props$defaultZoom === void 0 ? 'autoWidth' : _props$defaultZoom,
dropFile = props.dropFile,
pdfJsParams = props.pdfJsParams,
_props$onPageChange = props.onPageChange,
onPageChange = _props$onPageChange === void 0 ? ef : _props$onPageChange,
locale = props.locale,
outputScale = props.outputScale,
_props$renderAllPages = props.renderAllPages,
renderAllPages = _props$renderAllPages === void 0 ? false : _props$renderAllPages,
workerSrc = props.workerSrc,
otherProps = _objectWithoutProperties(props, _excluded);
(0, _react.useEffect)(function () {
if (!isWorkerLoaded) {
pdfjsLib.GlobalWorkerOptions.workerSrc = workerSrc !== null && workerSrc !== void 0 ? workerSrc : '/pdf.worker.min.js';
isWorkerLoaded = true;
}
// if (!window['pdfjsWorker']) {
// window['pdfjsWorker'] = pdfjsWorker;
// }
}, []);
var styles = (0, _PDFViewer.default)();
// 最外层的根节点
var rootRef = (0, _react.useRef)(null);
// 包裹页面部分的 body（带滚动条）
var _useState = (0, _react.useState)(null),
_useState2 = _slicedToArray(_useState, 2),
bodyRef = _useState2[0],
setBodyRef = _useState2[1];
// 页面容器（随页面长度）
var pageContainerRef = (0, _react.useRef)(null);
// 页面缓存（已经渲染过的页面进行缓存）
var pageCacheRef = (0, _react.useRef)({});
var _useGetState = (0, _hooks.useGetState)(0),
_useGetState2 = _slicedToArray(_useGetState, 3),
current = _useGetState2[0],
setCurrent = _useGetState2[1],
getCurrent = _useGetState2[2];
var _useGetState3 = (0, _hooks.useGetState)(typeof defaultZoom === 'number' ? defaultZoom : 0),
_useGetState4 = _slicedToArray(_useGetState3, 3),
zoom = _useGetState4[0],
setZoom = _useGetState4[1],
getZoom = _useGetState4[2];
var _useState3 = (0, _react.useState)(defaultTitle),
_useState4 = _slicedToArray(_useState3, 2),
__title = _useState4[0],
setTitle = _useState4[1];
var title = _title !== null && _title !== void 0 ? _title : __title;
var scale = Math.pow(2, zoom);
var _useState5 = (0, _react.useState)({
zooming: false,
contextMenu: []
}),
_useState6 = _slicedToArray(_useState5, 1),
_this = _useState6[0];
(0, _react.useEffect)(function () {
onPageChange(current);
}, [current]);
var _useState7 = (0, _react.useState)(0),
_useState8 = _slicedToArray(_useState7, 2),
setForceUpdateCount = _useState8[1];
var forceUpdate = (0, _ahooks.useMemoizedFn)(function () {
setForceUpdateCount(function (count) {
return count + 1;
});
});
(0, _ahooks.useDebounceEffect)(function () {
_this.zooming = false;
}, [zoom], {
wait: 500
});
var _useState9 = (0, _react.useState)([0, 0]),
_useState10 = _slicedToArray(_useState9, 2),
renderRange = _useState10[0],
setRenderRange = _useState10[1];
var _useGetState5 = (0, _hooks.useGetState)([]),
_useGetState6 = _slicedToArray(_useGetState5, 3),
pages = _useGetState6[0],
setPages = _useGetState6[1],
getPages = _useGetState6[2];
var _useState11 = (0, _react.useState)(false),
_useState12 = _slicedToArray(_useState11, 2),
loading = _useState12[0],
setLoading = _useState12[1];
var _useCounter = (0, _ahooks.useCounter)(0),
_useCounter2 = _slicedToArray(_useCounter, 2),
pluginLoading = _useCounter2[0],
_useCounter2$ = _useCounter2[1],
pluginLoad = _useCounter2$.inc,
pluginLoaded = _useCounter2$.dec;
var setZoomWithScrollLock = (0, _ahooks.useMemoizedFn)(function (newZoom) {
var zoom = getZoom();
if (newZoom === zoom) return;
var dom = pageContainerRef.current;
if (dom) {
var scrollTop = dom.scrollTop,
scrollLeft = dom.scrollLeft;
var zoomDiff = newZoom - zoom;
var newScrollLeft = scrollLeft * Math.pow(2, zoomDiff);
var newScrollTop = scrollTop * Math.pow(2, zoomDiff);
setZoom(newZoom);
var pageDom = pageContainerRef.current;
if (pageDom) {
pageDom.style.setProperty('--scale-factor', "".concat(Math.pow(2, newZoom) * _utils.PixelsPerInch.PDF_TO_CSS_UNITS));
}
dom.scrollTop = newScrollTop;
dom.scrollLeft = newScrollLeft;
onZoomChange(newZoom);
}
});
// 获取每一页的 viewport 信息
var viewports = (0, _react.useMemo)(function () {
return pages.map(function (page) {
var viewport = page.getViewport({
scale: 1
});
return viewport;
});
}, [pages]);
// 根据 viewport 信息生成每一页的实际位置信息
var _useMemo = (0, _react.useMemo)(function () {
var top = 0;
var maxWidth = 0;
var pageMaxWidth = 0;
var pageMaxHeight = 0;
var topArr = viewports.map(function (_ref) {
var _height = _ref.height,
_width = _ref.width;
var width = _width * _utils.PixelsPerInch.PDF_TO_CSS_UNITS;
var height = _height * _utils.PixelsPerInch.PDF_TO_CSS_UNITS;
var _top = top;
top += Math.floor(height + pageGap) * scale;
maxWidth = Math.max(width * scale, maxWidth);
pageMaxWidth = Math.max(width, pageMaxWidth);
pageMaxHeight = Math.max(height, pageMaxHeight);
return _top;
});
return {
topArr: topArr,
maxWidth: maxWidth,
pageMaxWidth: pageMaxWidth,
pageMaxHeight: pageMaxHeight
};
}, [viewports, pageGap, scale]),
pageTopArr = _useMemo.topArr,
maxWidth = _useMemo.maxWidth,
pageMaxWidth = _useMemo.pageMaxWidth,
pageMaxHeight = _useMemo.pageMaxHeight;
var _useState13 = (0, _react.useState)(typeof defaultZoom === 'number' ? false : defaultZoom),
_useState14 = _slicedToArray(_useState13, 2),
zoomMode = _useState14[0],
setZoomMode = _useState14[1];
var autoZoomDebounce = (0, _ahooks.useDebounceFn)(function () {
var newZoom = zoom;
if (zoomMode && _this.size && maxWidth && pageMaxHeight) {
if (zoomMode === 'autoWidth') {
// 调整缩放级别，使其与容器宽度匹配
newZoom = Math.log2((_this.size.width - 32) / pageMaxWidth);
} else if (zoomMode === 'autoHeight') {
newZoom = Math.log2((_this.size.height - 32) / pageMaxHeight);
}
}
newZoom = round001((0, _tools.clamp)(newZoom, -4, 3));
if (newZoom !== zoom) {
setZoomWithScrollLock(newZoom);
}
}, {
wait: 250
});
(0, _react.useEffect)(function () {
autoZoomDebounce.run();
}, [zoomMode, pageMaxHeight, pageMaxWidth]);
// 自动调整缩放级别
(0, _hooks.useSizeListener)(function (size) {
if (size.width === 0 || size.height === 0) {
autoZoomDebounce.cancel();
return;
}
_this.size = size;
autoZoomDebounce.run();
}, rootRef);
// 翻頁
var changePage = (0, _ahooks.useMemoizedFn)(function (page) {
var anim = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : false;
var dom = pageContainerRef.current;
if (dom) {
var _viewports$page;
var top = pageTopArr[page];
var height = ((_viewports$page = viewports[page]) === null || _viewports$page === void 0 ? void 0 : _viewports$page.height) * scale * _utils.PixelsPerInch.PDF_TO_CSS_UNITS;
var containerHeight = dom.getBoundingClientRect().height;
dom.scrollTo({
top: Math.min(top, top + 0.5 * (height - containerHeight)),
behavior: anim ? 'smooth' : 'auto'
});
}
});
var getPDFInstance = (0, _ahooks.useMemoizedFn)(function () {
return _this.pdfDoc;
});
var getFileSource = (0, _ahooks.useMemoizedFn)(function () {
return _this.file;
});
var close = (0, _ahooks.useMemoizedFn)( /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee() {
return _regeneratorRuntime().wrap(function _callee$(_context) {
while (1) switch (_context.prev = _context.next) {
case 0:
if (!_this.pdfDoc) {
_context.next = 12;
break;
}
_context.prev = 1;
_this.pdfLoadingKey = undefined;
_context.next = 5;
return _this.pdfDoc.destroy();
case 5:
setLoading(false);
setTitle(undefined);
_context.next = 12;
break;
case 9:
_context.prev = 9;
_context.t0 = _context["catch"](1);
console.error('pdfDoc destory failed');
case 12:
_this.file = undefined;
_this.pdfDoc = undefined;
setPages([]);
case 15:
case "end":
return _context.stop();
}
}, _callee, null, [[1, 9]]);
})));
var load = (0, _ahooks.useMemoizedFn)( /*#__PURE__*/function () {
var _ref3 = _asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee3(file) {
var _options,
options,
_ref4,
title,
_ref4$resetScrollTop,
resetScrollTop,
key,
pdfContent,
pdfJsGetDocumentParams,
pdfDoc,
pageLength,
allPages,
dom,
_args3 = arguments;
return _regeneratorRuntime().wrap(function _callee3$(_context3) {
while (1) switch (_context3.prev = _context3.next) {
case 0:
_options = _args3.length > 1 && _args3[1] !== undefined ? _args3[1] : {};
options = typeof _options === 'string' ? {
title: _options
} : _options;
_ref4 = options || {}, title = _ref4.title, _ref4$resetScrollTop = _ref4.resetScrollTop, resetScrollTop = _ref4$resetScrollTop === void 0 ? true : _ref4$resetScrollTop;
key = "".concat(Date.now(), "_").concat(Math.random());
_this.pdfLoadingKey = key;
setLoading(true);
_context3.prev = 6;
pdfContent = file;
if (!(pdfContent instanceof Promise)) {
_context3.next = 12;
break;
}
_context3.next = 11;
return pdfContent;
case 11:
pdfContent = _context3.sent;
case 12:
if (!(pdfContent instanceof Blob)) {
_context3.next = 16;
break;
}
_context3.next = 15;
return pdfContent.arrayBuffer();
case 15:
pdfContent = _context3.sent;
case 16:
if (!(key !== _this.pdfLoadingKey)) {
_context3.next = 18;
break;
}
return _context3.abrupt("return");
case 18:
pdfJsGetDocumentParams = _objectSpread({
enableXfa: true
}, pdfJsParams);
if (typeof pdfContent === 'string' || pdfContent instanceof URL) {
pdfJsGetDocumentParams.url = pdfContent;
} else {
pdfJsGetDocumentParams.data = pdfContent;
}
_context3.next = 22;
return (0, _pdfjsDistBrowserify.getDocument)(pdfJsGetDocumentParams).promise;
case 22:
pdfDoc = _context3.sent;
if (!pdfDoc) {
_context3.next = 36;
break;
}
_this.pdfDoc = pdfDoc;
pageLength = pdfDoc.numPages;
_context3.next = 28;
return Promise.all(new Array(pageLength).fill(0).map( /*#__PURE__*/function () {
var _ref5 = _asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee2(_, index) {
var pageNum, page;
return _regeneratorRuntime().wrap(function _callee2$(_context2) {
while (1) switch (_context2.prev = _context2.next) {
case 0:
pageNum = index + 1;
_context2.next = 3;
return pdfDoc.getPage(pageNum);
case 3:
page = _context2.sent;
return _context2.abrupt("return", page);
case 5:
case "end":
return _context2.stop();
}
}, _callee2);
}));
return function (_x2, _x3) {
return _ref5.apply(this, arguments);
};
}()));
case 28:
allPages = _context3.sent;
if (!(key !== _this.pdfLoadingKey)) {
_context3.next = 31;
break;
}
return _context3.abrupt("return");
case 31:
setPages(allPages);
_this.file = pdfContent;
if (title != null) {
setTitle(title);
}
dom = pageContainerRef.current;
if (dom && resetScrollTop) {
dom.scrollTop = 0;
}
case 36:
_context3.prev = 36;
if (_this.pdfLoadingKey === key) setLoading(false);
return _context3.finish(36);
case 39:
case "end":
return _context3.stop();
}
}, _callee3, null, [[6,, 36, 39]]);
}));
return function (_x) {
return _ref3.apply(this, arguments);
};
}());
var scrollTo = (0, _ahooks.useMemoizedFn)(function () {
var dom = pageContainerRef.current;
if (dom) dom.scrollTo.apply(dom, arguments);
});
var getCurrentPage = (0, _ahooks.useMemoizedFn)(function () {
return getCurrent();
});
var getPageCount = (0, _ahooks.useMemoizedFn)(function () {
return getPages().length;
});
var getRoot = (0, _ahooks.useMemoizedFn)(function () {
return rootRef.current;
});
// 獲取頁面的圖片
var getPageBlob = (0, _ahooks.useMemoizedFn)( /*#__PURE__*/function () {
var _ref6 = _asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee4(index) {
var options,
_options$scale,
scale,
_options$outputScale,
outputScale,
pages,
canvas,
_page,
viewport,
context,
task,
blob,
_args4 = arguments;
return _regeneratorRuntime().wrap(function _callee4$(_context4) {
while (1) switch (_context4.prev = _context4.next) {
case 0:
options = _args4.length > 1 && _args4[1] !== undefined ? _args4[1] : {};
_options$scale = options.scale, scale = _options$scale === void 0 ? 1 : _options$scale, _options$outputScale = options.outputScale, outputScale = _options$outputScale === void 0 ? 2 : _options$outputScale;
pages = getPages();
if (!(index < 0 || index >= pages.length)) {
_context4.next = 5;
break;
}
return _context4.abrupt("return", null);
case 5:
canvas = document.createElement('canvas');
document.body.append(canvas);
_context4.prev = 7;
canvas.style.display = 'none';
_page = pages[index];
viewport = _page.getViewport({
scale: scale
});
context = canvas.getContext('2d');
if (!context) {
_context4.next = 24;
break;
}
canvas.width = Math.floor(viewport.width * outputScale);
canvas.height = Math.floor(viewport.height * outputScale);
canvas.style.width = "".concat(Math.floor(viewport.width), "px");
canvas.style.height = "".concat(Math.floor(viewport.height), "px");
task = _page.render({
canvasContext: context,
viewport: viewport,
transform: [outputScale, 0, 0, outputScale, 0, 0]
});
_context4.next = 20;
return task.promise;
case 20:
_context4.next = 22;
return new Promise(function (resolve) {
canvas.toBlob(function (blob) {
resolve(blob);
});
});
case 22:
blob = _context4.sent;
return _context4.abrupt("return", blob);
case 24:
_context4.next = 29;
break;
case 26:
_context4.prev = 26;
_context4.t0 = _context4["catch"](7);
console.error(_context4.t0);
case 29:
_context4.prev = 29;
document.body.removeChild(canvas);
return _context4.finish(29);
case 32:
return _context4.abrupt("return", null);
case 33:
case "end":
return _context4.stop();
}
}, _callee4, null, [[7, 26, 29, 32]]);
}));
return function (_x4) {
return _ref6.apply(this, arguments);
};
}());
var updateRenderRange = (0, _ahooks.useMemoizedFn)(function () {
var dom = pageContainerRef.current;
if (dom) {
var top = dom.scrollTop;
var height = dom.clientHeight;
var currentPage = Math.max((0, _utils.findSortedArr)(pageTopArr, top + 0.5 * height) - 1, 0);
var startPage = (0, _utils.findSortedArr)(pageTopArr, top - 50);
startPage = Math.max(0, startPage - 1);
var pageBottom = pageTopArr[startPage];
var endPage = startPage;
while (viewports[endPage] && pageBottom + viewports[endPage].height * scale <= top + height + 50) {
pageBottom += (viewports[endPage].height + pageGap) * scale;
endPage += 1;
}
if (current !== currentPage) {
setCurrent(currentPage);
}
if (renderRange[0] !== startPage || renderRange[1] !== endPage) {
setRenderRange([startPage, endPage]);
}
}
});
var updateRenderRangeDebounce = (0, _ahooks.useDebounceFn)(function () {
_this.mousePositionBeforeWheel = undefined;
updateRenderRange();
}, {
wait: 280
});
var downloadPdf = (0, _ahooks.useMemoizedFn)( /*#__PURE__*/_asyncToGenerator( /*#__PURE__*/_regeneratorRuntime().mark(function _callee5() {
var doc, data, blob, fileTitle, file;
return _regeneratorRuntime().wrap(function _callee5$(_context5) {
while (1) switch (_context5.prev = _context5.next) {
case 0:
doc = _this.pdfDoc;
if (!doc) {
_context5.next = 10;
break;
}
_context5.next = 4;
return doc.getData();
case 4:
data = _context5.sent;
blob = new Blob([data.buffer], {
type: 'application/pdf'
});
fileTitle = typeof title === 'string' ? title : 'download.pdf';
if (!fileTitle.endsWith('.pdf')) fileTitle += '.pdf';
file = new File([blob], fileTitle, {
type: 'application/pdf'
});
(0, _fileSaver.saveAs)(file, fileTitle);
case 10:
case "end":
return _context5.stop();
}
}, _callee5);
})));
// 渲染完成的回调，缓存 page
var onRenderFinish = function onRenderFinish(pageIndex) {
pageCacheRef.current[pageIndex] = true;
};
// 监听滚动事件，并更新需要展示的页面范围（虚拟列表）
(0, _ahooks.useEventListener)('scroll', function (ev) {
if (_this.zooming) {
// 如果是因为正在缩放导致的滚动，则需要添加防抖
updateRenderRangeDebounce.run();
} else {
updateRenderRangeDebounce.cancel();
updateRenderRange();
}
}, {
target: pageContainerRef,
passive: true
});
(0, _react.useEffect)(function () {
updateRenderRangeDebounce.run();
}, [zoom]);
// 監聽滾輪事件，縮放頁面
(0, _ahooks.useEventListener)('wheel', function (ev) {
var zoom = getZoom();
var dom = pageContainerRef.current;
if (ev.ctrlKey && dom) {
var _dom$getBoundingClien = dom.getBoundingClientRect(),
left = _dom$getBoundingClien.left,
top = _dom$getBoundingClien.top,
width = _dom$getBoundingClien.width;
var clientX = ev.clientX,
clientY = ev.clientY;
var x = clientX - left;
var y = clientY - top;
if (!_this.mousePositionBeforeWheel) {
_this.mousePositionBeforeWheel = {
x: x + dom.scrollLeft - 0.5 * (maxWidth < width ? width - maxWidth : 0),
y: y + dom.scrollTop,
zoom: zoom
};
}
var newZoom = round001((0, _tools.clamp)(zoom - (0, _tools.clamp)(ev.deltaY, -40, 40) * 0.01, minZoom, maxZoom));
if (newZoom === zoom) return;
_this.zooming = true;
setZoomMode(false);
setZoom(newZoom);
if (_this.mousePositionBeforeWheel) {
// 更新滾動條高度
var _this$mousePositionBe = _this.mousePositionBeforeWheel,
fullScrollLeft = _this$mousePositionBe.x,
fullScrollTop = _this$mousePositionBe.y,
originZoom = _this$mousePositionBe.zoom;
var zoomDiff = newZoom - originZoom;
var newScrollLeft = fullScrollLeft * Math.pow(2, zoomDiff) - x;
var newScrollTop = fullScrollTop * Math.pow(2, zoomDiff) - y;
var pageDom = pageContainerRef.current;
if (pageDom) {
pageDom.style.setProperty('--scale-factor', "".concat(Math.pow(2, newZoom) * _utils.PixelsPerInch.PDF_TO_CSS_UNITS));
}
dom.scrollTop = newScrollTop;
dom.scrollLeft = newScrollLeft;
}
onZoomChange(newZoom);
} else {
_this.mousePositionBeforeWheel = undefined;
}
}, {
target: pageContainerRef,
passive: true
});
// 鼠标发生移动，则清空 position 信息，避免后续缩放时出现异常
(0, _ahooks.useEventListener)('mousemove', function () {
_this.mousePositionBeforeWheel = undefined;
}, {
target: pageContainerRef
});
// 禁用默认的滚轮缩放（缩放页面）
(0, _ahooks.useEventListener)('wheel', function (ev) {
if (ev.ctrlKey) {
ev.preventDefault();
}
}, {
target: pageContainerRef
});
// 拖拽并打开文件
(0, _ahooks.useEventListener)('dragenter', function (ev) {
ev.currentTarget.setAttribute('over', '1');
}, {
target: bodyRef
});
(0, _ahooks.useEventListener)('dragleave', function (ev) {
ev.currentTarget.removeAttribute('over');
}, {
target: bodyRef
});
(0, _ahooks.useEventListener)('dragover', function (ev) {
if (dropFile) {
ev.preventDefault();
ev.stopPropagation();
}
}, {
target: bodyRef
});
(0, _ahooks.useEventListener)('drop', function (ev) {
ev.currentTarget.removeAttribute('over');
if (dropFile) {
ev.preventDefault();
ev.stopPropagation();
if (ev.dataTransfer) {
var files = ev.dataTransfer.files;
if (files.length > 0) {
var _files = _slicedToArray(files, 1),
file = _files[0];
if (file.name.endsWith('.pdf')) load(file);
}
}
}
}, {
target: bodyRef
});
/* 工具栏 */
var _useState15 = (0, _react.useState)(null),
_useState16 = _slicedToArray(_useState15, 2),
toolbarLeftDom = _useState16[0],
setToolbarLeftDom = _useState16[1];
var _useState17 = (0, _react.useState)(null),
_useState18 = _slicedToArray(_useState17, 2),
toolbarRightDom = _useState18[0],
setToolbarRightDom = _useState18[1];
var _useState19 = (0, _react.useState)([]),
_useState20 = _slicedToArray(_useState19, 2),
_centerToolbarIds = _useState20[0],
setCenterToolbarIds = _useState20[1];
var centerToolbarIds = (0, _react.useMemo)(function () {
return _centerToolbarIds.map(function (_ref8) {
var _ref9 = _slicedToArray(_ref8, 1),
id = _ref9[0];
return id;
});
}, [_centerToolbarIds]);
var addCenterToolbarId = (0, _ahooks.useMemoizedFn)(function (id) {
var order = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
// 插入 toolbar id 并排序
setCenterToolbarIds(function (ids) {
return ids.filter(function (_ref10) {
var _ref11 = _slicedToArray(_ref10, 1),
_id = _ref11[0];
return _id !== id;
}).concat([[id, order]]).sort(function (a, b) {
return a[1] - b[1];
});
});
});
var removeCenterToolbarId = (0, _ahooks.useMemoizedFn)(function (id) {
setCenterToolbarIds(function (ids) {
return ids.filter(function (_ref12) {
var _ref13 = _slicedToArray(_ref12, 1),
_id = _ref13[0];
return _id !== id;
});
});
});
var pdfViewerHandle = (0, _react.useMemo)(function () {
return {
load: load,
close: close,
setZoom: setZoomWithScrollLock,
getZoom: getZoom,
changePage: changePage,
getPageBlob: getPageBlob,
getCurrentPage: getCurrentPage,
getPageCount: getPageCount,
scrollTo: scrollTo,
setTitle: setTitle,
getRoot: getRoot,
getFileSource: getFileSource,
getPDFInstance: getPDFInstance,
pluginLoad: pluginLoad,
pluginLoaded: pluginLoaded
};
}, []);
(0, _react.useImperativeHandle)(pRef, function () {
return pdfViewerHandle;
}, []);
var _useState21 = (0, _react.useState)([]),
_useState22 = _slicedToArray(_useState21, 2),
pageCoverRefs = _useState22[0],
setPageCoverRefs = _useState22[1];
(0, _react.useEffect)(function () {
setPageCoverRefs(function (l) {
return l.slice();
});
}, [renderRange[0], renderRange[1]]);
// 内部共享状态
var _useSetState = (0, _ahooks.useSetState)(function () {
return {
drawingPluginName: ''
};
}),
_useSetState2 = _slicedToArray(_useSetState, 2),
internalState = _useSetState2[0],
setInternalState = _useSetState2[1];
var menuCollector = (0, _useCollector.default)();
var mergedLocale = (0, _context7.useLocale)(_zh_CN.default, locale)[0];
return /*#__PURE__*/(0, _jsxRuntime.jsx)(_context7.LocaleContext.Provider, {
value: mergedLocale,
children: /*#__PURE__*/(0, _jsxRuntime.jsx)(_context6.default.Provider, {
value: (0, _react.useMemo)(function () {
return {
loading: loading,
pluginLoading: pluginLoading,
pages: pages,
viewports: viewports,
zoom: zoom,
current: current,
changePage: changePage,
forceUpdate: forceUpdate,
pageCoverRefs: pageCoverRefs,
pdfViewer: pdfViewerHandle,
internalState: internalState,
setInternalState: setInternalState,
bodyElement: bodyRef,
onMenuCollect: menuCollector.on,
offMenuCollect: menuCollector.off
};
}, [loading, pluginLoading, pages, viewports, zoom, current, pageCoverRefs, internalState, bodyRef]),
children: /*#__PURE__*/(0, _jsxRuntime.jsx)(_context6.PDFToolbarContext.Provider, {
value: (0, _react.useMemo)(function () {
return {
toolbarRightDom: toolbarRightDom,
toolbarLeftDom: toolbarLeftDom,
removeCenterToolbarId: removeCenterToolbarId,
centerToolbarIds: centerToolbarIds,
addCenterToolbarId: addCenterToolbarId
};
}, [toolbarRightDom, toolbarLeftDom, centerToolbarIds]),
children: /*#__PURE__*/(0, _jsxRuntime.jsxs)("div", _objectSpread(_objectSpread({
ref: rootRef,
className: "".concat(styles.root, " ").concat(className)
}, otherProps), {}, {
children: [/*#__PURE__*/(0, _jsxRuntime.jsx)(_PDFToolbar.default, {
hide: hideToolbar,
title: loading ? '' : title,
className: styles.toolbar,
leftRef: function leftRef(dom) {
setToolbarLeftDom(dom);
},
centerIds: centerToolbarIds,
rightRef: function rightRef(dom) {
setToolbarRightDom(dom);
}
}), /*#__PURE__*/(0, _jsxRuntime.jsxs)("div", {
ref: setBodyRef,
className: (0, _classnames.default)(styles.pagesOuter, _defineProperty({}, styles.droppable, dropFile)),
children: [/*#__PURE__*/(0, _jsxRuntime.jsxs)(_pocket.ContextMenu, {
ref: pageContainerRef,
className: styles.pages,
onScroll: onPageScroll,
mainMenuMinWidth: 200,
data: function data() {
return [{
key: 'download',
icon: /*#__PURE__*/(0, _jsxRuntime.jsx)(_icons.DownloadOutlined, {}),
text: mergedLocale.downloadCurrentFile || '下载当前文件',
disabled: pages.length <= 0,
onClick: function onClick() {
downloadPdf();
}
}].concat(menuCollector.collect().sort(function (a, b) {
return (a.order || 0) - (b.order || 0);
}));
},
style: {
'--scale-factor': scale * _utils.PixelsPerInch.PDF_TO_CSS_UNITS,
'--scale-factor-origin': scale,
'--pdf-viewer-page-scale': scale * _utils.PixelsPerInch.PDF_TO_CSS_UNITS
},
children: [viewports.length === 0 && !loading && !pluginLoading && emptyTips, viewports.map(function (viewport, pageIndex) {
var shouldRender = pageIndex >= renderRange[0] && pageIndex <= renderRange[1] || renderAllPages;
var width = "calc(var(--scale-factor) * ".concat(Math.floor(viewport.width), "px)");
var height = "calc(var(--scale-factor) * ".concat(Math.floor(viewport.height), "px)");
var gap = "calc(var(--scale-factor) * ".concat(pageGap, "px)");
// 已渲染好的页面，不应该卸载
if (pageCacheRef.current[pageIndex]) {
shouldRender = true;
}
return /*#__PURE__*/(0, _jsxRuntime.jsx)("div", {
className: styles.pageContainer,
style: {
width: width,
height: height,
marginBottom: gap
},
children: shouldRender && /*#__PURE__*/(0, _jsxRuntime.jsxs)(_jsxRuntime.Fragment, {
children: [/*#__PURE__*/(0, _jsxRuntime.jsx)(_PDFPage.default, {
className: styles.page,
outputScale: outputScale,
index: pageIndex,
zoom: zoom,
render: shouldRender,
onRenderFinish: onRenderFinish
}), /*#__PURE__*/(0, _jsxRuntime.jsx)("div", {
ref: function ref(node) {
return pageCoverRefs[pageIndex] = node;
},
className: styles.pageCover
}), /*#__PURE__*/(0, _jsxRuntime.jsx)("div", {
className: styles.pageCover,
children: renderPageCover(pageIndex, {
viewport: viewport,
zoom: zoom
})
})]
})
}, pageIndex);
})]
}), (loading || !!pluginLoading) && loadingTips, children]
}), pages.length > 0 && /*#__PURE__*/(0, _jsxRuntime.jsx)(_ZoomAndPageController.default, {
className: styles.pageController,
max: Math.pow(2, maxZoom),
min: Math.pow(2, minZoom),
zoomMode: zoomMode,
onZoomModeChange: setZoomMode
})]
}))
})
})
});
});
PDFViewer.displayName = 'PDFViewer';
var usePdfViewerRef = exports.usePdfViewerRef = function usePdfViewerRef() {
return (0, _react.useRef)(null);
};
var _default = exports.default = PDFViewer;