PDFTron pdfnet-node

Class: PDFDocViewPrefs

PDFNet. PDFDocViewPrefs

new PDFDocViewPrefs()

PDFDocViewPrefs is a high-level utility class that can be used to control the way the document is to be presented on the screen or in print. PDFDocViewPrefs class corresponds to PageMode, PageLayout, and ViewerPreferences entries in the document's catalog. For more details please refer to section 8.1 'Viewer Preferences' in PDF Reference Manual.

Members

<static> PageLayout

Type:
  • number
Properties:
Name Type Description
e_Default number
e_SinglePage number
e_OneColumn number
e_TwoColumnLeft number
e_TwoColumnRight number
e_TwoPageLeft number
e_TwoPageRight number

<static> PageMode

Type:
  • number
Properties:
Name Type Description
e_UseNone number
e_UseThumbs number
e_UseBookmarks number
e_FullScreen number
e_UseOC number
e_UseAttachments number

<static> ViewerPref

Type:
  • number
Properties:
Name Type Description
e_HideToolbar number
e_HideMenubar number
e_HideWindowUI number
e_FitWindow number
e_CenterWindow number
e_DisplayDocTitle number

Methods

<static> create(tr)

PDFDocViewPrefs constructor. Typically this constructor is never used since it is easier to obtain PDFDocViewPrefs using PDFDoc.GetViewPrefs()
Parameters:
Name Type Description
tr PDFNet.Obj
Returns:
A promise that resolves to an object of type: "PDFNet.PDFDocViewPrefs"
Type
Promise.<PDFNet.PDFDocViewPrefs>

copy()

Copy Constructor
Returns:
A promise that resolves to an object of type: "PDFNet.PDFDocViewPrefs"
Type
Promise.<PDFNet.PDFDocViewPrefs>

getDirection()

Returns:
A promise that resolves to true is the predominant reading order for text is left to right, false otherwise. See SetDirection() for more information.
Type
Promise.<boolean>

getLayoutMode()

Returns:
A promise that resolves to the value of currently selected PageLayout property.
Type
Promise.<number>
Example
Return value enum:
<pre>
PDFNet.PDFDocViewPrefs.PageLayout = {
	e_Default : 0
	e_SinglePage : 1
	e_OneColumn : 2
	e_TwoColumnLeft : 3
	e_TwoColumnRight : 4
	e_TwoPageLeft : 5
	e_TwoPageRight : 6
}
</pre>

getNonFullScreenPageMode()

Returns:
A promise that resolves to the PageMode used after exiting full-screen mode. Note: This entry is meaningful only if the value of the PageMode is set to e_FullScreen; it is ignored otherwise.
Type
Promise.<number>
Example
Return value enum:
<pre>
PDFNet.PDFDocViewPrefs.PageMode = {
	e_UseNone : 0
	e_UseThumbs : 1
	e_UseBookmarks : 2
	e_FullScreen : 3
	e_UseOC : 4
	e_UseAttachments : 5
}
</pre>

getPageMode()

Returns:
A promise that resolves to the value of currently selected PageMode property.
Type
Promise.<number>
Example
Return value enum:
<pre>
PDFNet.PDFDocViewPrefs.PageMode = {
	e_UseNone : 0
	e_UseThumbs : 1
	e_UseBookmarks : 2
	e_FullScreen : 3
	e_UseOC : 4
	e_UseAttachments : 5
}
</pre>

getPref(pref)

Parameters:
Name Type Description
pref number 
PDFNet.PDFDocViewPrefs.ViewerPref = {
	e_HideToolbar : 0
	e_HideMenubar : 1
	e_HideWindowUI : 2
	e_FitWindow : 3
	e_CenterWindow : 4
	e_DisplayDocTitle : 5
}
the ViewerPref property type to query.
Returns:
A promise that resolves to the value of given ViewerPref property.
Type
Promise.<boolean>

getPrintArea()

Returns:
A promise that resolves to the page boundary representing the area of a page to be rendered when printing the document.
Type
Promise.<number>
Example
Return value enum:
<pre>
PDFNet.Page.Box = {
	e_media : 0
	e_crop : 1
	e_bleed : 2
	e_trim : 3
	e_art : 4
	e_user_crop : 5
}
</pre>

getPrintClip()

Returns:
A promise that resolves to the page boundary to which the contents of a page are to be clipped when printing the document.
Type
Promise.<number>
Example
Return value enum:
<pre>
PDFNet.Page.Box = {
	e_media : 0
	e_crop : 1
	e_bleed : 2
	e_trim : 3
	e_art : 4
	e_user_crop : 5
}
</pre>

getSDFObj()

Returns:
A promise that resolves to document's SDF/Cos 'ViewerPreferences' dictionary or NULL if the object is not present.
Type
Promise.<PDFNet.Obj>

getViewArea()

Returns:
A promise that resolves to the page boundary representing the area of a page to be displayed when viewing the document on the screen.
Type
Promise.<number>
Example
Return value enum:
<pre>
PDFNet.Page.Box = {
	e_media : 0
	e_crop : 1
	e_bleed : 2
	e_trim : 3
	e_art : 4
	e_user_crop : 5
}
</pre>

getViewClip()

Returns:
A promise that resolves to the page boundary to which the contents of a page are to be clipped when viewing the document on the screen.
Type
Promise.<number>
Example
Return value enum:
<pre>
PDFNet.Page.Box = {
	e_media : 0
	e_crop : 1
	e_bleed : 2
	e_trim : 3
	e_art : 4
	e_user_crop : 5
}
</pre>

setDirection(left_to_right)

Sets the predominant reading order for text. This flag has no direct effect on the document's contents or page numbering but can be used to determine the relative positioning of pages when displayed side by side or printed n-up.
Parameters:
Name Type Description
left_to_right boolean true if the predominant reading order for text is from left to right and false if it is right to left (including vertical writing systems, such as Chinese, Japanese, and Korean). Default value: left_to_right is true.
Returns:
Type
Promise.<void>

setInitialPage(dest)

A utility method used to set the fist page displayed after the document is opened. This method is equivalent to PDFDoc::SetOpenAction(goto_action). If OpenAction is not specified the document should be opened to the top of the first page at the default magnification factor.
Parameters:
Name Type Description
dest PDFNet.Destination A value specifying the page destination to be displayed when the document is opened. Example: 
Destination dest = Destination::CreateFit(page);
pdfdoc.GetViewPrefs().SetInitialPage(dest);
Returns:
Type
Promise.<void>

setLayoutMode(mode)

Sets PageLayout property and change the value of the PageLayout key in the Catalog dictionary.
Parameters:
Name Type Description
mode number 
PDFNet.PDFDocViewPrefs.PageLayout = {
	e_Default : 0
	e_SinglePage : 1
	e_OneColumn : 2
	e_TwoColumnLeft : 3
	e_TwoColumnRight : 4
	e_TwoPageLeft : 5
	e_TwoPageRight : 6
}
New PageLayout setting. Default value is e_SinglePage.
Returns:
Type
Promise.<void>

setNonFullScreenPageMode(mode)

Set the document's page mode, specifying how to display the document on exiting full-screen mode.
Parameters:
Name Type Description
mode number 
PDFNet.PDFDocViewPrefs.PageMode = {
	e_UseNone : 0
	e_UseThumbs : 1
	e_UseBookmarks : 2
	e_FullScreen : 3
	e_UseOC : 4
	e_UseAttachments : 5
}
PageMode used after exiting full-screen mode. Default value: e_UseNone. Note: This entry is meaningful only if the value of the PageMode is set to e_FullScreen; it is ignored otherwise.
Returns:
Type
Promise.<void>

setPageMode(mode)

Sets PageMode property and change the value of the PageMode key in the Catalog dictionary.
Parameters:
Name Type Description
mode number 
PDFNet.PDFDocViewPrefs.PageMode = {
	e_UseNone : 0
	e_UseThumbs : 1
	e_UseBookmarks : 2
	e_FullScreen : 3
	e_UseOC : 4
	e_UseAttachments : 5
}
New PageMode setting. Default value is e_UseNone.
Returns:
Type
Promise.<void>

setPref(pref, value)

Sets the value of given ViewerPref property.
Parameters:
Name Type Description
pref number 
PDFNet.PDFDocViewPrefs.ViewerPref = {
	e_HideToolbar : 0
	e_HideMenubar : 1
	e_HideWindowUI : 2
	e_FitWindow : 3
	e_CenterWindow : 4
	e_DisplayDocTitle : 5
}
the ViewerPref property type to modify.
value boolean The new value for the property.
Returns:
Type
Promise.<void>

setPrintArea(box)

Sets the page boundary representing the area of a page to be rendered when printing the document.
Parameters:
Name Type Description
box number 
PDFNet.Page.Box = {
	e_media : 0
	e_crop : 1
	e_bleed : 2
	e_trim : 3
	e_art : 4
	e_user_crop : 5
}
printing region. The default value is page crop-box.
Returns:
Type
Promise.<void>

setPrintClip(box)

Sets the page boundary to which the contents of a page are to be clipped when printing the document.
Parameters:
Name Type Description
box number 
PDFNet.Page.Box = {
	e_media : 0
	e_crop : 1
	e_bleed : 2
	e_trim : 3
	e_art : 4
	e_user_crop : 5
}
printing clip region. The default value is page crop-box.
Returns:
Type
Promise.<void>

setViewArea(box)

Sets the page boundary representing the area of a page to be displayed when viewing the document on the screen.
Parameters:
Name Type Description
box number 
PDFNet.Page.Box = {
	e_media : 0
	e_crop : 1
	e_bleed : 2
	e_trim : 3
	e_art : 4
	e_user_crop : 5
}
page boundary displayed when viewing the document on the screen. By default, PDF viewers will display the crop-box.
Returns:
Type
Promise.<void>

setViewClip(box)

Sets the page boundary to which the contents of a page are to be clipped when viewing the document on the screen.
Parameters:
Name Type Description
box number 
PDFNet.Page.Box = {
	e_media : 0
	e_crop : 1
	e_bleed : 2
	e_trim : 3
	e_art : 4
	e_user_crop : 5
}
screen clip region. The default value is page crop-box.
Returns:
Type
Promise.<void>