pdf.js禁止下载，打印（包括快捷键ctrl s,ctrl p）

pdf.js禁止下载，打印（包括快捷键ctrl+s,ctrl+p）

pdf.js本身功能是很完整的，但我们有需求要禁止下载和打印，所以找了网上的一些办法，综合一下。

步骤

1. 页面中先隐藏下载和打印的按钮，找到 id=“print” 和 id=“download”，在样式中添加 style=“dispaly:none”

  <!-- 打印 -->
 <button id="print" class="toolbarButton hiddenMediumView" style="dispaly:none" title="Print" tabindex="32"
       data-l10n-id="print">
 <span data-l10n-id="print_label">Print</span>
 </button>
 <!-- 下载 -->
 <button id="download" class="toolbarButton hiddenMediumView"  style="dispaly:none" title="Save" tabindex="33"
    data-l10n-id="save">
 <span data-l10n-id="save_label">Save</span>
 </button>

2. 隐藏代码中实现下载和打印的方法，防止用户使用快捷键打印下载

   bindEvents() {
          const {
            eventBus,
            _boundEvents
          } = this;
          _boundEvents.beforePrint = this.beforePrint.bind(this);
          _boundEvents.afterPrint = this.afterPrint.bind(this);
          eventBus._on("resize", webViewerResize);
          eventBus._on("hashchange", webViewerHashchange);
          // eventBus._on("beforeprint", _boundEvents.beforePrint);
          // eventBus._on("afterprint", _boundEvents.afterPrint);
          eventBus._on("pagerender", webViewerPageRender);
          eventBus._on("pagerendered", webViewerPageRendered);
          eventBus._on("updateviewarea", webViewerUpdateViewarea);
          eventBus._on("pagechanging", webViewerPageChanging);
          eventBus._on("scalechanging", webViewerScaleChanging);
          eventBus._on("rotationchanging", webViewerRotationChanging);
          eventBus._on("sidebarviewchanged", webViewerSidebarViewChanged);
          eventBus._on("pagemode", webViewerPageMode);
          eventBus._on("namedaction", webViewerNamedAction);
          eventBus._on("presentationmodechanged", webViewerPresentationModeChanged);
          eventBus._on("presentationmode", webViewerPresentationMode);
          eventBus._on("switchannotationeditormode", webViewerSwitchAnnotationEditorMode);
          eventBus._on("switchannotationeditorparams", webViewerSwitchAnnotationEditorParams);
          // eventBus._on("print", webViewerPrint);
          // eventBus._on("download", webViewerDownload);
          eventBus._on("firstpage", webViewerFirstPage);
          eventBus._on("lastpage", webViewerLastPage);
          .......

参考地址：https://blog.csdn.net/liuying93/article/details/83410405