我正在尝试使用PDF.js库在React的web应用程序中呈现PDF文件。有这么多不同的信息在那里,甚至在官方的git中,所以我被困在试图呈现整个pdf文档,也有转到特定页面的功能。这就是我现在所拥有的:
import * as pdfWorker from 'pdfjs-dist/build/pdf.worker'
import PdfJsLib from 'pdfjs-dist';
import 'pdfjs-dist/web/pdf_viewer.css';
import * as pdfjsViewer from 'pdfjs-dist/web/pdf_viewer';
...
componentDidMount() {
let container = this.viewerContainer.current;
let viewer = this.viewer.current;
PdfJsLib.GlobalWorkerOptions.workerSrc = pdfWorker;
PdfJsLib.getDocument(this.props.file).then((pdf) => {
this.setState({numPages: pdf.numPages});
this.pdfLinkService = new pdfjsViewer.PDFLinkService();
this.pdfFindController = new pdfjsViewer.PDFFindController({
linkService: this.pdfLinkService,
});
this.pdfViewer = new pdfjsViewer.PDFViewer({
container,
viewer,
linkService: this.pdfLinkService,
findController: this.pdfFindController
});
this.pdfLinkService.setViewer(this.pdfViewer);
this.pdfViewer.setDocument(pdf);
this.pdfLinkService.setDocument(pdf, null);
this.pdfViewer.onePageRendered.then(() => {
pdf.getOutline().then((outline) => {
this.outline = outline || null;
if (!outline) {
return;
}
this.setState({bookmarkItems: outline});
});
});
});
}
...
onNextPageClick = () => {
if(this.state.numPages > this.state.pageNumber) {
this.setState({pageNumber: this.state.pageNumber + 1});
this.setState({pageNumberInput: this.state.pageNumber + 1});
this.pdfViewer.currentPageNumber++;
}
}
onPreviousPageClick = () => {
if(this.state.pageNumber > 1) {
this.setState({pageNumber: this.state.pageNumber - 1});
this.setState({pageNumberInput: this.state.pageNumber - 1});
this.pdfViewer.currentPageNumber--;
}
}
...
render() {
return(
...
<div className="splitToolbarButton hiddenSmallView">
<button className="toolbarButton pageUp" title="Previous Page" id="previous" tabIndex="13" data-l10n-id="previous" onClick={this.onPreviousPageClick}>
<span data-l10n-id="previous_label">Previous</span>
</button>
<div className="splitToolbarButtonSeparator" />
<button className="toolbarButton pageDown" title="Next Page" id="next" tabIndex="14" data-l10n-id="next" onClick={this.onNextPageClick}>
<span data-l10n-id="next_label">Next</span>
</button>
</div>
...
<div id="viewerContainer" ref={this.viewerContainer}>
<div id="viewer" ref={this.viewer} className="pdfViewer" />
</div>
)
}
有了所有这些代码,我能够完整地呈现我的pdf文档,但我在跳转到特定页面时遇到了问题。奇怪的是,只有当我用new pdfjsViewer.PDFViewer
呈现整个文档时,我才不能跳转到页面,但是当我使用new pdfjsViewer.PDFSinglePageViewer
一次只呈现一个页面时,我通常可以跳转到页面。有没有人知道我错过了什么,这让我头痛了好几个星期?谢谢。
发布于 2018-12-27 19:46:37
我找到了我的问题所在。我不知道id为viewerContainer
的div
元素必须有position: absolute
,这样scrollIntoView
才能真正做一些事情。div
元素mainContainer
也是如此。当然,现在它是有意义的,但我一直在寻找错误的地方,认为它必须与React或PDFLinkService
等服务一起做一些事情。
https://stackoverflow.com/questions/53913361
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