# viewerpreferences

Adds the ability to set ViewerPreferences and by thus controlling the way the document is to be presented on the screen or in print.

Source:
  - modules/viewerpreferences.js, line 9

### Methods

#### (inner) viewerPreferences(options, doReset)

Source:
  - modules/viewerpreferences.js, line 18

Set the ViewerPreferences of the generated PDF

##### Example

    var doc = new jsPDF()
    doc.text('This is a test', 10, 10)
    doc.viewerPreferences({'FitWindow': true}, true)
    doc.save("viewerPreferences.pdf")

    // Example printing 10 copies, using cropbox, and hiding UI.
    doc.viewerPreferences({
      'HideWindowUI': true,
      'PrintArea': 'CropBox',
      'NumCopies': 10
    })

##### Parameters:

Name | Type | Description
--- | --- | ---
`options` | Object | Array with the ViewerPreferences Example: doc.viewerPreferences({"FitWindow":true}); You can set following preferences: HideToolbar (boolean) Default value: false HideMenubar (boolean) Default value: false. HideWindowUI (boolean) Default value: false. FitWindow (boolean) Default value: false. CenterWindow (boolean) Default value: false DisplayDocTitle (boolean) Default value: false. NonFullScreenPageMode (string) Possible values: UseNone, UseOutlines, UseThumbs, UseOC Default value: UseNone Direction (string) Possible values: L2R, R2L Default value: L2R. ViewArea (string) Possible values: MediaBox, CropBox, TrimBox, BleedBox, ArtBox Default value: CropBox. ViewClip (string) Possible values: MediaBox, CropBox, TrimBox, BleedBox, ArtBox Default value: CropBox PrintArea (string) Possible values: MediaBox, CropBox, TrimBox, BleedBox, ArtBox Default value: CropBox PrintClip (string) Possible values: MediaBox, CropBox, TrimBox, BleedBox, ArtBox Default value: CropBox. PrintScaling (string) Possible values: AppDefault, None Default value: AppDefault. Duplex (string) Possible values: Simplex, DuplexFlipLongEdge, DuplexFlipShortEdge Default value: none PickTrayByPDFSize (boolean) Default value: false PrintPageRange (Array) Example: [[1,5], [7,9]] Default value: as defined by PDF viewer application NumCopies (Number) Possible values: 1, 2, 3, 4, 5 Default value: 1 For more information see the PDF Reference, sixth edition on Page 577
`doReset` | boolean | True to reset the settings

##### Returns:

jsPDF jsPDF-instance