# pdfjs

**Repository Path**: chengyaojun/pdfjs

## Basic Information

- **Project Name**: pdfjs
- **Description**: 自定义修改pdf样式，添加双指缩放功能
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 4
- **Forks**: 0
- **Created**: 2021-08-09
- **Last Updated**: 2025-04-23

## Categories & Tags

**Categories**: Uncategorized

**Tags**: pdfjs

## README

# pdfjs

#### 介绍

简化pdfjs预览样式，添加双指缩放功能， 对`viewer.html`进行了修改。

### 删除页面边距

在`viewer.js`中配置removePageBorders = true,删除页面的边距

```javascript
this.pdfViewer = new _pdf_viewer.PDFViewer({
                container: container,
                viewer: viewer,
                eventBus: eventBus,
                renderingQueue: pdfRenderingQueue,
                linkService: pdfLinkService,
                downloadManager: downloadManager,
                findController: findController,
                renderer: _app_options.AppOptions.get('renderer'),
                enableWebGL: _app_options.AppOptions.get('enableWebGL'),
                l10n: this.l10n,
                textLayerMode: _app_options.AppOptions.get('textLayerMode'),
                imageResourcesPath: _app_options.AppOptions.get('imageResourcesPath'),
                renderInteractiveForms: _app_options.AppOptions.get('renderInteractiveForms'),
                enablePrintAutoRotate: _app_options.AppOptions.get('enablePrintAutoRotate'),
                useOnlyCssZoom: _app_options.AppOptions.get('useOnlyCssZoom'),
                maxCanvasPixels: _app_options.AppOptions.get('maxCanvasPixels'),
                // 删除页面边框
                removePageBorders: true,
              });
```

### 无法显示印章

修复电子印章无法显示的问题，在`pdf.work.js`

```javascript
if (data.fieldType === 'Sig') {
      _this2.setFlags(_util.AnnotationFlag.HIDDEN); // 注释掉改代码
    }
```

### 部分鸿蒙手机滑动卡顿

部分鸿蒙手机在开启文字选择时会出现卡顿无响应的情况，需要在`viewer.js`中关闭文字选择

```javascript
function getDefaultPreferences() {
  if (!defaultPreferences) {
    defaultPreferences = Promise.resolve({
      "showPreviousViewOnLoad": true,
      "defaultZoomValue": "",
      "sidebarViewOnLoad": 0,
      "cursorToolOnLoad": 0,
      "enableWebGL": false,
      "eventBusDispatchToDOM": false,
      "pdfBugEnabled": false,
      "disableRange": false,
      "disableStream": false,
      "disableAutoFetch": false,
      "disableFontFace": false,
      "textLayerMode": 0,  // 文字选择默认开启，开始时鸿蒙系统滑动会卡顿
      "useOnlyCssZoom": false,
      "externalLinkTarget": 0,
      "renderer": "canvas",
      "renderInteractiveForms": false,
      "enablePrintAutoRotate": false,
      "disablePageMode": false,
      "disablePageLabels": false,
      "scrollModeOnLoad": 0,
      "spreadModeOnLoad": 0
    });
  }
```