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Guides
API

API for React Native PDF viewer

TypeScript

PDFTron React Native now has support for TypeScript. Since not all customers use the language, the typings used in this document will be described using normal JavaScript types. For TypeScript users, type information is automatically provided while coding. They can also be found in our TypeScript source files.

RNPdftron

RNPdftron contains static methods for global library initialization, configuration, and utility methods.

initialize

Initializes PDFTron SDK with your PDFTron commercial license key. You can run PDFTron in demo mode by passing an empty string.

Parameters:

NameTypeDescription
licenseKeystringyour PDFTron license key
RNPdftron.initialize('your_license_key');

enableJavaScript

Enables JavaScript for PDFTron SDK, by default it is enabled.

Parameters:

NameTypeDescription
enabledboolwhether to enable or disable JavaScript
RNPdftron.enableJavaScript(true);

getVersion

Gets the current PDFNet version.

Returns a Promise.

Promise Parameters:

NameTypeDescription
versionstringcurrent PDFNet version
RNPdftron.getVersion().then((version) => {
  console.log("Current PDFNet version:", version);
});

getPlatformVersion

Gets the version of current platform (Android/iOS).

Returns a Promise.

Promise Parameters:

NameTypeDescription
platformVersionstringcurrent platform version (Android/iOS)
RNPdftron.getPlatformVersion().then((platformVersion) => {
  console.log("App currently running on:", platformVersion);
});

getSystemFontList

Gets the font list available on the OS (Android only). This is typically useful when you are mostly working with non-ASCII characters in the viewer.

Returns a Promise.

Promise Parameters:

NameTypeDescription
fontListstringthe font list available on Android
RNPdftron.getSystemFontList().then((fontList) => {
  console.log("OS font list:", fontList);
});

clearRubberStampCache

Clear the information and bitmap cache for rubber stamps (Android only). This is typically useful when the content of rubber stamps has been changed in the viewer.

Returns a promise.

RNPdftron.clearRubberStampCache().then(() => {
  console.log("Rubber stamp cache cleared");
});

encryptDocument

Encrypts (password-protects) a document. Note: This function does not lock the document and cannot be used while the document is opened in the viewer.

Parameters:

NameTypeDescription
file pathstringthe local file path to the file
passwordstringthe password you would like to set
current passwordstringthe current password, use empty string if no password

Returns a promise.

Example:

RNPdftron.encryptDocument("/sdcard/Download/new.pdf", "1111", "").then(() => {
  console.log("done password");
});

pdfFromOfficeTemplate

Generates a PDF using a template in the form of an Office document and replacement data in the form of a JSON object. For more information please see our template guide.

Parameters:

NameTypeDescription
docxPathstringthe local file path to the template file
jsonobjectthe replacement data in the form of a JSON object

Returns a Promise.

Promise Parameters:

NameTypeDescription
resultPdfPathstringthe local file path to the generated PDF

The user is responsible for cleaning up the temporary file that is generated.

Example:

RNPdftron.pdfFromOfficeTemplate("/sdcard/Download/red.docx", json).then((resultPdfPath) => {
  console.log(resultPdfPath);
});

DocumentView - Props

A React component for displaying documents of different types such as PDF, docx, pptx, xlsx and various image formats.

Open a Document

document

string, required

The path or url to the document.

Example:

<DocumentView
  document={'https://pdftron.s3.amazonaws.com/downloads/pl/PDFTRON_about.pdf'}
/>

password

string, optional

The password of the document, if any.

Example:

<DocumentView
  password={'password'}
/>

isBase64String

bool, optional, defaults to false

If true, document prop will be treated as a base64 string. If it is not the base64 string of a pdf file, base64FileExtension is required.

When viewing a document initialized with a base64 string (i.e. a memory buffer), a temporary file is created on Android and iOS.

<DocumentView
  isBase64String={true}
  document={'...'} // base 64 string
/>

base64FileExtension

string, required if using base64 string of a non-pdf file, defaults to ".pdf"

The file extension for the base64 string in document, if isBase64String is true.

<DocumentView
  isBase64String={true}
  document={'...'} // base 64 string
  base64FileExtension={'.jpeg'}
/>

customHeaders

object, optional

Defines custom headers to use with HTTP/HTTPS requests.

<DocumentView
  customHeaders={{headerKey: 'headerValue'}}
/>

readOnly

bool, optional, defaults to false

Defines whether the viewer is read-only. If true, the UI will not allow the user to change the document.

<DocumentView
  readOnly={true}
/>

onDocumentLoaded

function, optional

This function is called when the document finishes loading.

<DocumentView
  onDocumentLoaded = {(path) => { 
    console.log('The document has finished loading:', path); 
  }}
/>

onDocumentError

function, optional

This function is called when document opening encounters an error.

<DocumentView
  onDocumentError = {(error) => { 
    console.log('Error occured during document opening:', error); 
  }}
/>

UI Customization

disabledElements

array of string, optional, defaults to none

Defines buttons to be disabled for the viewer. Strings should be Config.Buttons constants.

<DocumentView
  disabledElements={[Config.Buttons.userBookmarkListButton]}
/>

disabledTools

array of string, optional, defaults to none

Defines tools to be disabled for the viewer. Strings should be Config.Tools constants.

<DocumentView
  disabledTools={[Config.Tools.annotationCreateLine, Config.Tools.annotationCreateRectangle]}
/>

onToolChanged

function, optional

This function is called when the current tool changes to a new tool

Parameters:

NameTypeDescription
previousToolstringthe previous tool (one of the Config.Tools constants or "unknown tool"), representing the tool before change
toolstringthe current tool (one of the Config.Tools constants or "unknown tool"), representing the current tool
<DocumentView
  onToolChanged = {({previousTool, tool}) => {
    console.log('Tool has been changed from', previousTool, 'to', tool);
  }}
/>

leadingNavButtonIcon

string, optional

The file name of the icon to be used for the leading navigation button. The button will use the specified icon if it is valid, and the default icon otherwise.

Example:

<DocumentView
  leadingNavButtonIcon={Platform.OS === 'ios' ? 'ic_close_black_24px.png' : 'ic_arrow_back_white_24dp'}
/>

Note: to add the image file to your application, please follow the steps below:

Android
  1. Add the image resource to the drawable directory in example/android/app/src/main/res. For details about supported file types and potential compression, check out this guide.
demo-android
  1. Now you can use the image in the viewer. For example, if you add button_close.png to drawable, you could use 'button_close' in leadingNavButtonIcon.
iOS
  1. After pods has been installed, open the .xcworkspace file for this application in Xcode (in this case, it's example.xcworkspace), and navigate through the list below. This would allow you to add resources, in this case, an image, to your project.
  • "Project navigator"
  • "example" (or the app name)
  • "Build Phases"
  • "Copy Bundle Resources"
  • "+".
demo-ios
  1. Now you can use the image in the viewer. For example, if you add button_open.png to the bundle, you could use 'button_open.png' in leadingNavButtonIcon.

showLeadingNavButton

bool, optional, defaults to true

Defines whether to show the leading navigation button.

<DocumentView
  showLeadingNavButton={true}
/>

onLeadingNavButtonPressed

function, optional

This function is called when the leading navigation button is pressed.

<DocumentView
  onLeadingNavButtonPressed = {() => {
    console.log('The leading nav has been pressed');
  }}
/>

documentSliderEnabled

bool, optional, defaults to true

Defines whether the document slider of the viewer is enabled.

<DocumentView
  documentSliderEnabled={false}
/>

hideViewModeItems

array of string, optional, defaults to none.

Defines view mode items to be hidden in the view mode dialog. Strings should be [Config.ViewModePickerItem]((https://github.com/PDFTron/pdftron-react-native/blob/master/src/Config/Config.js) constants.

<DocumentView
  hideViewModeItems={[
    Config.ViewModePickerItem.Crop,
    Config.ViewModePickerItem.Rotation,
    Config.ViewModePickerItem.ColorMode
  ]}
/>

Toolbar Customization

topToolbarEnabled

bool, optional, defaults to true

Deprecated. Use hideTopAppNavBar prop instead.

bottomToolbarEnabled

bool, optional, defaults to true

Defines whether the bottom toolbar of the viewer is enabled.

<DocumentView
  bottomToolbarEnabled={false}
/>

annotationToolbars

array of objects, options (one of Config.DefaultToolbars constants or custom toolbar object)

Defines custom toolbars. If passed in, the default toolbars will no longer appear. It is possible to mix and match with default toolbars. See example below:

const myToolbar = {
  [Config.CustomToolbarKey.Id]: 'myToolbar',
  [Config.CustomToolbarKey.Name]: 'myToolbar', 
  [Config.CustomToolbarKey.Icon]: Config.ToolbarIcons.FillAndSign,
  [Config.CustomToolbarKey.Items]: [Config.Tools.annotationCreateArrow, Config.Tools.annotationCreateCallout, Config.Buttons.undo]
};

...
<DocumentView
  annotationToolbars={[Config.DefaultToolbars.Annotate, myToolbar]}
/>

hideDefaultAnnotationToolbars

array of strings, optional, defaults to none

Defines which default annotation toolbars should be hidden. Note that this prop should be used when annotationToolbars is not defined. Strings should be Config.DefaultToolbars constants.

<DocumentView
  hideDefaultAnnotationToolbars={[Config.DefaultToolbars.Annotate, Config.DefaultToolbars.Favorite]}
/>

hideAnnotationToolbarSwitcher

bool, optional, defaults to false

Defines whether to show the toolbar switcher in the top toolbar.

<DocumentView
  hideAnnotationToolbarSwitcher={false}
/>

hideTopToolbars

bool, optional, defaults to false

Defines whether to hide both the top app nav bar and the annotation toolbar.

<DocumentView
  hideTopToolbars={false}
/>

hideTopAppNavBar

bool, optional, defaults to false

Defines whether to hide the top navigation app bar.

<DocumentView
  hideTopAppNavBar={true}
/>

hideToolbarsOnTap

bool, optional, defaults to true

Defines whether an unhandled tap in the viewer should toggle the visibility of the top and bottom toolbars. When false, the top and bottom toolbar visibility will not be toggled and the page content will fit between the bars, if any.

<DocumentView
  hideToolbarsOnTap={false}
/>

topAppNavBarRightBar

array of strings, optional, iOS only

Customizes the right bar section of the top app nav bar. If passed in, the default right bar section will not be used. Strings should be [Config.Buttons]((https://github.com/PDFTron/pdftron-react-native/blob/master/src/Config/Config.js) constants.

<DocumentView
  topAppNavBarRightBar={[Config.Buttons.reflowButton, Config.Buttons.outlineListButton]}
/>

bottomToolbar

array of strings, optional, only the outline list, thumbnail list, share, view mode, search, and reflow buttons are supported on Android

Defines a custom bottom toolbar. If passed in, the default bottom toolbar will not be used. Strings should be [Config.Buttons]((https://github.com/PDFTron/pdftron-react-native/blob/master/src/Config/Config.js) constants.

<DocumentView
  bottomToolbar={[Config.Buttons.reflowButton, Config.Buttons.outlineListButton]}
/>

padStatusBar

bool, optional, defaults to false, Android only

Defines whether the viewer will add padding to take account of the system status bar.

<DocumentView
  padStatusBar={true}
/>

Layout

fitMode

string, optional, default value is 'FitWidth'

Defines the fit mode (default zoom level) of the viewer. String should be one of Config.FitMode constants.

<DocumentView
  fitMode={Config.FitMode.FitPage}
/>

layoutMode

string, optional, default value is 'Continuous'

Defines the layout mode of the viewer. String should be one of Config.LayoutMode constants.

<DocumentView
  layoutMode={Config.LayoutMode.FacingContinuous}
/>

onLayoutChanged

function, optional

This function is called when the layout of the viewer has been changed.

<DocumentView
  onLayoutChanged = {() => {
    console.log('Layout has been updated.');
  }}
/>

Page

initialPageNumber

number, optional

Defines the initial page number that viewer displays when the document is opened. Note that page numbers are 1-indexed.

<DocumentView
  initialPageNumber={5}
/>

pageNumber

number, optional

Defines the currently displayed page number. Different from initialPageNumber, changing this prop value at runtime will change the page accordingly.

<DocumentView
  pageNumber={5}
/>

pageChangeOnTap

bool, optional, defaults to true

Defines whether the viewer should change pages when the user taps the edge of a page, when the viewer is in a horizontal viewing mode.

<DocumentView
  pageChangeOnTap={true}
/>

pageIndicatorEnabled

bool, optional, defaults to true

Defines whether to show the page indicator for the viewer.

<DocumentView
  pageIndicatorEnabled={true}
/>

keyboardShortcutsEnabled

bool, optional, defaults to true, iOS only

Defines whether the keyboard shortcuts of the viewer are enabled.

<DocumentView
  keyboardShortcutsEnabled={false}
/>

onPageChanged

function, optional

This function is called when the page number has been changed.

Parameters:

NameTypeDescription
previousPageNumberintthe previous page number
pageNumberintthe current page number
<DocumentView
  onPageChanged = {({previousPageNumber, pageNumber}) => {
    console.log('Page number changes from', previousPageNumber, 'to', pageNumber); 
  }}
/>

Zoom

onZoomChanged

function, optional

This function is called when the zoom scale has been changed.

Parameters:

NameTypeDescription
zoomdoublethe current zoom ratio of the document
<DocumentView
  onZoomChanged = {(zoom) => {
    console.log('Current zoom ratio is', zoom); 
  }}
/>

onZoomFinished

function, optional

This function is called when a zooming has been finished. For example, if zoom via gesture, this is called on gesture release.

Parameters:

NameTypeDescription
zoomdoublethe current zoom ratio of the document
<DocumentView
  onZoomFinished = {(zoom) => {
    console.log('Current zoom ratio is', zoom);
  }}

Scroll

horizontalScrollPos

number, optional

Defines the horizontal scroll position in the current document viewer.

<DocumentView
  horizontalScrollPos={50}
/>

verticalScrollPos

number, optional

Defines the vertical scroll position in the current document viewer.

<DocumentView
  verticalScrollPos={50}
/>

onScrollChanged

function, optional

This function is called when the scroll position has been changed.

Parameters:

NameTypeDescription
horizontalnumberthe horizontal position of the scroll
verticalnumberthe vertical position of the scroll
<DocumentView
  onScrollChanged = {({horizontal, vertical}) => {
    console.log('Current scroll position is', horizontal, 'horizontally, and', vertical, 'vertically.');
  }}

Reflow

imageInReflowEnabled

bool, optional, defaults to true

Whether to show images in reflow mode.

<DocumentView
  imageInReflowEnabled={false}
/>

reflowOrientation

string, optional, default value is 'Horizontal'. Android only.

Sets the scrolling direction of the reflow control. Strings should be Config.ReflowOrientation constants.

<DocumentView
  reflowOrientation={Config.ReflowOrientation.Vertical} 
/>

Annotation Menu

hideAnnotationMenu

array of strings, optional, defaults to none

Defines annotation types that will not show in the annotation (long-press) menu. Strings should be Config.Tools constants.

<DocumentView
  hideAnnotationMenu={[Config.Tools.annotationCreateArrow, Config.Tools.annotationEraserTool]}
/>

annotationMenuItems

array of strings, optional, default contains all the items

Defines the menu items that can show when an annotation is selected. Strings should be Config.AnnotationMenu constants.

<DocumentView
  annotationMenuItems={[Config.AnnotationMenu.search, Config.AnnotationMenu.share]}
/>

overrideAnnotationMenuBehavior

array of strings, optional, defaults to none

Defines the menu items that will skip default behavior when pressed. Strings should be Config.AnnotationMenu constants. They will still be displayed in the annotation menu, and the function onAnnotationMenuPress will be called where custom behavior can be implemented.

<DocumentView
  overrideAnnotationMenuBehavior={[Config.AnnotationMenu.copy]}
/>

onAnnotationMenuPress

function, optional

This function is called when an annotation menu item passed in to overrideAnnotationMenuBehavior is pressed.

Parameters:

NameTypeDescription
annotationMenustringOne of Config.AnnotationMenu constants, representing which item has been pressed
annotationsarrayAn array of {id: string, pageNumber: number, type: string, rect: object} objects, where id is the annotation identifier, pageNumber is the page number, type is one of the Config.Tools constants and rect={x1, y1, x2, y2} specifies the annotation's screen rect
<DocumentView
  onAnnotationMenuPress = {({annotationMenu, annotations}) => {
    console.log('Annotation menu item', annotationMenu, 'has been pressed');
    annotations.forEach(annotation => {
      console.log('The id of selected annotation is', annotation.id);
      console.log('The page number of selected annotation is', annotation.pageNumber);
      console.log('The type of selected annotation is', annotation.type);
      console.log('The lower left corner of selected annotation is', annotation.x1, annotation.y1);
    });
  }}
/>

Long Press Menu

longPressMenuEnabled

bool, optional, defaults to true

Defines whether to show the popup menu of options when the user long presses on text or blank space on the document.

<DocumentView
  longPressMenuEnabled={true}
/>

longPressMenuItems

array of strings, optional, default contains all the items

Defines menu items that can be shown when long pressing on text or blank space. Strings should be Config.LongPressMenu constants.

<DocumentView
  longPressMenuItems={[Config.LongPressMenu.copy, Config.LongPressMenu.read]}
/>

overrideLongPressMenuBehavior

array of strings, optional, defaults to none

Defines the menu items on long press that will skip default behavior when pressed. Strings should be Config.LongPressMenu constants. They will still be displayed in the long press menu, and the function onLongPressMenuPress will be called where custom behavior can be implemented.

<DocumentView
  overrideLongPressMenuBehavior={[Config.LongPressMenu.search]}
/>

onLongPressMenuPress

function, optional

This function is called if the pressed long press menu item is passed in to overrideLongPressMenuBehavior

Parameters:

NameTypeDescription
longPressMenustringOne of Config.LongPressMenu constants, representing which item has been pressed
longPressTextstringthe selected text if pressed on text, empty otherwise
<DocumentView
  onLongPressMenuPress = {({longPressMenu, longPressText}) => {
    console.log('Long press menu item', longPressMenu, 'has been pressed');
    if (longPressText !== '') {
      console.log('The selected text is', longPressText);
    }
  }}
/>

Custom Behavior

overrideBehavior

array of string, optional, defaults to none

Defines actions that will skip default behavior, such as external link click. Strings should be Config.Actions constants. The function onBehaviorActivated will be called where custom behavior can be implemented, whenever the defined actions occur.

<DocumentView
  overrideBehavior={[Config.Actions.linkPress]}
/>

onBehaviorActivated

function, optional

This function is called if the activated behavior is passed in to overrideBehavior

Parameters:

NameTypeDescription
actionstringOne of Config.Actions constants, representing which action has been activated
dataobjectA JSON object that varies depending on the action

Data param table:

ActionData param
Config.Actions.linkPress{url: string}
Config.Actions.stickyNoteShowPopUp{id: string, pageNumber: number, type: string, rect: {x1: number, y1: number, x2: number, y2: number}}
<DocumentView
  onBehaviorActivated = {({action, data}) => {
    console.log('Activated action is', action);
    if (action === Config.Actions.linkPress) {
      console.log('The external link pressed is', data.url);
    } else if (action === Config.Actions.stickyNoteShowPopUp) {
      console.log('Sticky note has been activated, but it would not show a pop up window.');
    }
  }}
/>

Multi-tab

multiTabEnabled

bool, optional, defaults to false

Defines whether viewer will use tabs in order to have more than one document open simultaneously (like a web browser). Changing the document prop value will cause a new tab to be opened with the associated file.

<DocumentView
  multiTabEnabled={true}
/>

tabTitle

string, optional, default is the file name

Set the tab title if multiTabEnabled is true.

<DocumentView
  multiTabEnabled={true} // requirement
  tabTitle={'tab1'}
/>

maxTabCount

number, optional, defaults to unlimited

Sets the limit on the maximum number of tabs that the viewer could have at a time. Open more documents after reaching this limit will overwrite the old tabs.

<DocumentView
  multiTabEnabled={true} // requirement
  maxTabCount={5}
/>

Collaboration

collabEnabled

bool, optional, defaults to false

Defines whether to enable realtime collaboration. If true then currentUser must be set as well for collaboration mode to work. Feature set may vary between local and collaboration mode

<DocumentView
  collabEnabled={true}
  currentUser={'Pdftron'}
/>

currentUser

string, required if collabEnabled is set to true

Defines the current user. Created annotations will have their title (author) set to this string.

<DocumentView
  collabEnabled={true}
  currentUser={'Pdftron'}
/>

currentUserName

string, optional

Defines the current user name. Will set the user name only if collabEnabled is true and currentUser is defined. This should be used only if you want the user's display name to be different than the annotation's title/author (in the case that currentUser is an ID rather than a human-friendly name.)

<DocumentView
  collabEnabled={true}
  currentUser={'Pdftron'}
  currentUserName={'Hello_World'}
/>

Annotations

annotationPermissionCheckEnabled

bool, optional, defaults to false

Defines whether an annotation's permission flags will be respected when it is selected. For example, a locked annotation can not be resized or moved.

<DocumentView
  annotationPermissionCheckEnabled={true}
/>

annotationAuthor

string, optional

Defines the author name for all annotations created on the current document. Exported xfdfCommand will include this piece of information.

<DocumentView
  annotationAuthor={'PDFTron'}
/>

continuousAnnotationEditing

bool, optional, defaults to true

If true, the active annotation creation tool will remain in the current annotation creation tool. Otherwise, it will revert to the "pan tool" after an annotation is created.

<DocumentView
  continuousAnnotationEditing={true}
/>

selectAnnotationAfterCreation

bool, optional, defaults to true

Defines whether an annotation is selected after it is created. On iOS, this functions for shape and text markup annotations only.

<DocumentView
  selectAnnotationAfterCreation={true}
/>

onExportAnnotationCommand

function, optional

This function is called if a change has been made to annotations in the current document. Unlike onAnnotationChanged, this function has an XFDF command string as its parameter. If you are modifying or deleting multiple annotations, then on Android the function is only called once, and on iOS it is called for each annotation.

Parameters:

NameTypeDescription
actionstringthe action that occurred (add, delete, modify)
xfdfCommandstringan xfdf string containing info about the edit
annotationsarrayan array of annotation data. When collaboration is enabled data comes in the format {id: string}, otherwise the format is {id: string, pageNumber: number, type: string}. In both cases, the data represents the annotations that have been changed. Type is one of the Config.Tools constants

Known Issues
On iOS, there is currently a bug that prevents the last XFDF from being retrieved when modifying annotations while collaboration mode is enabled.

<DocumentView
  onExportAnnotationCommand = {({action, xfdfCommand, annotations}) => {
    console.log('Annotation edit action is', action);
    console.log('The exported xfdfCommand is', xfdfCommand);
    annotations.forEach((annotation) => {
      console.log('Annotation id is', annotation.id);
      if (!this.state.collabEnabled) {
        console.log('Annotation pageNumber is', annotation.pageNumber);
        console.log('Annotation type is', annotation.type);
      }
    });
  }}
  collabEnabled={this.state.collabEnabled}
  currentUser={'Pdftron'}
/>

onAnnotationsSelected

function, optional

This function is called when an annotation(s) is selected.

Parameters:

NameTypeDescription
annotationsarrayarray of annotation data in the format {id: string, pageNumber: number, type: string, rect: {x1: number, y1: number, x2: number, y2: number}}, representing the selected annotations. Type is one of the Config.Tools constants
<DocumentView
  onAnnotationsSelected = {({annotations}) => {
    annotations.forEach(annotation => {
      console.log('The id of selected annotation is', annotation.id);
      console.log('It is in page', annotation.pageNumber);
      console.log('Its type is', annotation.type);
      console.log('Its lower left corner has coordinate', annotation.rect.x1, annotation.rect.y1);
    });
  }}
/>

onAnnotationChanged

function, optional

This function is called if a change has been made to an annotation(s) in the current document.

Parameters:

NameTypeDescription
actionstringthe action that occurred (add, delete, modify)
annotationsarrayarray of annotation data in the format {id: string, pageNumber: number, type: string}, representing the annotations that have been changed. Type is one of the Config.Tools constants
<DocumentView
  onAnnotationChanged = {({action, annotations}) => {
    console.log('Annotation edit action is', action);
    annotations.forEach(annotation => {
      console.log('The id of changed annotation is', annotation.id);
      console.log('It is in page', annotation.pageNumber);
      console.log('Its type is', annotation.type);
    });
  }}
/>

onFormFieldValueChanged

function, optional

This function is called if a change has been made to form field values.

Parameters:

NameTypeDescription
fieldsarrayarray of field data in the format {fieldName: string, fieldValue: string}, representing the fields that have been changed
<DocumentView
  onFormFieldValueChanged = {({fields}) => {
    console.log('Annotation edit action is', action);
    annotations.forEach(annotation => {
      console.log('The id of changed annotation is', annotation.id);
      console.log('It is in page', annotation.pageNumber);
    });
  }}
/>

annotationListEditingEnabled

bool, optional, Android only, default value is true

If document editing is enabled, then this value determines if the annotation list is editable.

<DocumentView
  annotationListEditingEnabled={true}
/>

Bookmark

onBookmarkChanged

function, optional

This function is called if a change has been made to user bookmarks.

Parameters:

NameTypeDescription
bookmarkJsonstringthe list of current bookmarks in JSON format
<DocumentView
  onBookmarkChanged = {({bookmarkJson}) => {
    console.log('Bookmarks have been changed. Current bookmark collection is', bookmarkJson);
  }}
/>

userBookmarksListEditingEnabled

bool, optional, default value is true

Defines whether the bookmark list can be edited. If the viewer is readonly then bookmarks on Android are still editable but are saved to the device rather than the PDF.

<DocumentView
  userBookmarksListEditingEnabled={true}
/>

Signature

signSignatureFieldsWithStamps

bool, optional, defaults to false

Defines whether signature fields will be signed with image stamps. This is useful if you are saving XFDF to remote source.

<DocumentView
  signSignatureFieldsWithStamps={true}
/>

showSavedSignatures

bool, optional, defaults to true

Defines whether to show saved signatures for re-use when using the signing tool.

<DocumentView
  showSavedSignatures={true}
/>

Thumbnail Browser

hideThumbnailFilterModes

array of strings, optional

Defines filter modes that should be hidden in the thumbnails browser. Strings should be Config.ThumbnailFilterMode constants

<DocumentView
  hideThumbnailFilterModes={[Config.ThumbnailFilterMode.Annotated]}
/>

thumbnailViewEditingEnabled

bool, optional, defaults to true

Defines whether user can modify the document using the thumbnail view (e.g. add/remove/rotate pages).

<DocumentView
  thumbnailViewEditingEnabled={true}
/>

Text Selection

onTextSearchStart

function, optional

This function is called immediately before a text search begins, either through user actions, or function calls such as findText.

<DocumentView
  onTextSearchStart = {() => {
    console.log('Text search has started');
  }}
/>

onTextSearchResult

function, optional

This function is called after a text search is finished or canceled.

Parameters:

NameTypeDescription
foundboolwhether a result is found. If no, it could be caused by not finding a matching result in the document, invalid text input, or action cancellation (user actions or cancelFindText)
textSelectionobjectthe text selection, in the format {html: string, unicode: string, pageNumber: number, quads: [[{x: number, y: number}, {x: number, y: number}, {x: number, y: number}, {x: number, y: number}], ...]}. If no such selection could be found, this would be null

quads indicate the quad boundary boxes for the selection, which could have a size larger than 1 if selection spans across different lines. Each quad have 4 points with x, y coordinates specified in number, representing a boundary box. The 4 points are in counter-clockwise order, though the first point is not guaranteed to be on lower-left relatively to the box.

<DocumentView
  onTextSearchResult = {({found, textSelection}) => {
    if (found) {
      console.log('Found selection on page', textSelection.pageNumber);
      for (let i = 0; i < textSelection.quads.length; i ++) {
        const quad = textSelection.quads[i];
        console.log('selection boundary quad', i);
        for (const quadPoint of quad) {
          console.log('A quad point has coordinates', quadPoint.x, quadPoint.y);
        }
      }
    }
  }}
/>

Others

useStylusAsPen

bool, optional, defaults to true

Defines whether a stylus should act as a pen when in pan mode. If false, it will act as a finger.

<DocumentView
  useStylusAsPen={true}
/>

followSystemDarkMode

bool, optional, Android and iOS 13+ only, defaults to true

Defines whether the UI will appear in a dark color when the system is dark mode. If false, it will use viewer setting instead.

<DocumentView
  followSystemDarkMode={false}
/>

autoSaveEnabled

bool, optional, defaults to true

Defines whether document is automatically saved by the viewer.

<DocumentView
  autoSaveEnabled={true}
/>

restrictDownloadUsage

bool, optional, defaults to false

Defines whether to restrict data usage when viewing online PDFs.

<DocumentView
  restrictDownloadUsage={true}
/>

Navigation

pageStackEnabled

bool, optional, defaults to true, Android only

Defines whether the page stack navigation buttons will appear in the viewer.

<DocumentView
  pageStackEnabled={false}
/>

showQuickNavigationButton

bool, optional, defaults to true, Android only

Defines whether the quick navigation buttons will appear in the viewer.

<DocumentView
  showQuickNavigationButton={false}
/>

showNavigationListAsSidePanelOnLargeDevices

bool, optional, defaults to true on Android and false on iOS

Defines whether the navigation list will be displayed as a side panel on large devices such as iPads and tablets.

<DocumentView
  showNavigationListAsSidePanelOnLargeDevices={true}
/>

DocumentView - Methods

Document

getDocumentPath

Returns the path of the current document. If isBase64String is true, this would be the path to the temporary pdf file converted from the base64 string in document.

Returns a Promise.

Promise Parameters:

NameTypeDescription
pathstringthe document path
this._viewer.getDocumentPath().then((path) => {
  console.log('The path to current document is: ' + path);
});

saveDocument

Saves the current document. If isBase64String is true, this would be the base64 string encoded from the temporary pdf file, which is created from the base64 string in document.

Returns a Promise.

Promise Parameters:

NameTypeDescription
filePathstringthe location of the saved document, or the base64 string of the pdf in the case of base64
this._viewer.saveDocument().then((filePath) => {
  console.log('saveDocument:', filePath);
});

UI Customization

setColorPostProcessMode

Sets the color post processing transformation mode for the viewer.

Parameters:

NameTypeDescription
colorPostProcessModestringcolor post processing transformation mode, should be a Config.ColorPostProcessMode constant
this._viewer.setColorPostProcessMode(Config.ColorPostProcessMode.NightMode);

setColorPostProcessColors

Sets the white and black color for the color post processing transformation.

Parameters:

NameTypeDescription
whiteColorobjectthe white color for the color post processing transformation, in the format {red: number, green: number, blue: number}. alpha could be optionally included (only Android would apply alpha), and all numbers should be in range [0, 255]
blackColorobjectthe black color for the color post processing transformation, in the same format as whiteColor
const whiteColor = {"red": 0, "green": 0, "blue": 255};
const blackColor = {"red": 255, "green": 0, "blue": 0};
this._viewer.setColorPostProcessColors(whiteColor, blackColor);

Annotation Tools

setToolMode

Sets the current tool mode.

Parameters:

NameTypeDescription
toolModestringOne of Config.Tools string constants, representing the tool mode to set
this._viewer.setToolMode(Config.Tools.annotationCreateFreeHand);

commitTool

Commits the current tool, only available for multi-stroke ink and poly-shape.

Returns a Promise.

Promise Parameters:

NameTypeDescription
committedbooltrue if either ink or poly-shape tool is committed, false otherwise
this._viewer.commitTool().then((committed) => {
  // committed: true if either ink or poly-shape tool is committed, false otherwise
});

Page

getPageCount

Gets the total number of pages in the currently displayed document.

Returns a Promise.

Promise Parameters:

NameTypeDescription
pageCountintthe current page count of the document
this._viewer.getPageCount().then((pageCount) => {
  console.log('pageCount', pageCount);
});

setCurrentPage

Sets current page of the document.

Parameters:

NameTypeDescription
pageNumberintegerthe page number for the target crop box; 1-indexed

Returns a Promise.

Promise Parameters:

NameTypeDescription
successboolwhether the setting process was successful
this._viewer.setCurrentPage(4).then((success) => {
  if (success) {
    console.log("Current page is set to 4.");
  }
});

gotoPreviousPage

Go to the previous page of the document. If on first page, it would stay on first page.

Returns a Promise.

Promise Parameters:

NameTypeDescription
successboolwhether the setting process was successful (no change due to staying in first page counts as being successful)
this._viewer.gotoPreviousPage().then((success) => {
  if (success) {
    console.log("Go to previous page.");
  }
});

gotoNextPage

Go to the next page of the document. If on last page, it would stay on last page.

Returns a Promise.

Promise Parameters:

NameTypeDescription
successboolwhether the setting process was successful (no change due to staying in last page counts as being successful)
this._viewer.gotoNextPage().then((success) => {
  if (success) {
    console.log("Go to next page.");
  }
});

gotoFirstPage

Go to the first page of the document.

Returns a Promise.

Promise Parameters:

NameTypeDescription
successboolwhether the setting process was successful
this._viewer.gotoFirstPage().then((success) => {
  if (success) {
    console.log("Go to first page.");
  }
});

gotoLastPage

Go to the last page of the document.

Returns a Promise.

Promise Parameters:

NameTypeDescription
successboolwhether the setting process was successful
this._viewer.gotoLastPage().then((success) => {
  if (success) {
    console.log("Go to last page.");
  }
});

getPageCropBox

Gets the crop box for specified page as a JSON object.

Parameters:

NameTypeDescription
pageNumberintegerthe page number for the target crop box. It is 1-indexed

Returns a Promise.

Promise Parameters:

NameTypeDescription
cropBoxobjectan object with information about position (x1, y1, x2 and y2) and size (width and height)
this._viewer.getPageCropBox(1).then((cropBox) => {
  console.log('bottom-left coordinate:', cropBox.x1, cropBox.y1);
  console.log('top-right coordinate:', cropBox.x2, cropBox.y2);
  console.log('width and height:', cropBox.width, cropBox.height);
});

getVisiblePages

Gets the visible pages in the current viewer as an array.

Returns a Promise.

Promise Parameters:

NameTypeDescription
visiblePagesarraya list of visible pages in the current viewer
this._viewer.getVisiblePages().then((visiblePages) => {
  for (const page of visiblePages) {
    console.log('page', page, 'is visible.')
  }
});

getPageRotation

Gets the rotation value of all pages in the current document.

Returns a Promise.

Promise Parameters:

NameTypeDescription
pageRotationnumberthe rotation degree of all pages, one of 0, 90, 180 or 270 (clockwise).
this._viewer.getPageRotation().then((pageRotation) => {
  console.log('The current page rotation degree is' + pageRotation);
});

rotateClockwise

Rotates all pages in the current document in clockwise direction (by 90 degrees).

Returns a Promise.

this._viewer.rotateClockwise();

rotateCounterClockwise

Rotates all pages in the current document in counter-clockwise direction (by 90 degrees).

Returns a Promise.

this._viewer.rotateCounterClockwise();

Import/Export Annotations

importAnnotationCommand

Imports remote annotation command to local document.

Parameters:

NameTypeDescription
xfdfCommandstringthe XFDF command string
initialLoadboolwhether this is for initial load; false by default

Returns a Promise.

const xfdfCommand = 'xfdfCommand <?xml version="1.0" encoding="UTF-8"?><xfdf xmlns="http://ns.adobe.com/xfdf/" xml:space="preserve"><add><circle style="solid" width="5" color="#E44234" opacity="1" creationdate="D:20201218025606Z" flags="print" date="D:20201218025606Z" name="9d0f2d63-a0cc-4f06-b786-58178c4bd2b1" page="0" rect="56.4793,584.496,208.849,739.369" title="PDF" /></add><modify /><delete /><pdf-info import-version="3" version="2" xmlns="http://www.pdftron.com/pdfinfo" /></xfdf>';
this._viewer.importAnnotationCommand(xfdf);

importAnnotations

Imports XFDF annotation string to the current document.

Parameters:

NameTypeDescription
xfdfstringannotation string in XFDF format for import

Returns a Promise.

const xfdf = '<?xml version="1.0" encoding="UTF-8"?>\n<xfdf xmlns="http://ns.adobe.com/xfdf/" xml:space="preserve">\n\t<annots>\n\t\t<circle style="solid" width="5" color="#E44234" opacity="1" creationdate="D:20190729202215Z" flags="print" date="D:20190729202215Z" page="0" rect="138.824,653.226,236.28,725.159" title="" /></annots>\n\t<pages>\n\t\t<defmtx matrix="1.333333,0.000000,0.000000,-1.333333,0.000000,1056.000000" />\n\t</pages>\n\t<pdf-info version="2" xmlns="http://www.pdftron.com/pdfinfo" />\n</xfdf>';
this._viewer.importAnnotations(xfdf);

exportAnnotations

Extracts XFDF from the current document.

Parameters:

NameTypeDescription
optionsobjectkey: annotList, type: array. If specified, annotations with the matching id and pageNumber will be exported; otherwise, all annotations in the current document will be exported.

Returns a Promise.

Promise Parameters:

NameTypeDescription
xfdfstringannotation string in XFDF format

Without options:

this._viewer.exportAnnotations().then((xfdf) => {
  console.log('XFDF for all annotations:', xfdf);
});

With options:

// annotList is an array of annotation data in the format {id: string, pageNumber: int}
const annotations = [{id: 'annot1', pageNumber: 1}, {id: 'annot2', pageNumber: 3}];
this._viewer.exportAnnotations({annotList: annotations}).then((xfdf) => {
  console.log('XFDF for 2 specified annotations', xfdf);
});

Annotations

flattenAnnotations

Flattens the forms and (optionally) annotations in the current document.

Parameters:

NameTypeDescription
formsOnlyboolDefines whether only forms are flattened. If false, all annotations will be flattened

Returns a Promise.

// flatten forms and annotations in the current document.
this._viewer.flattenAnnotations(false);

deleteAnnotations

Deletes the specified annotations in the current document.

Parameters:

NameTypeDescription
annotationsarrayDefines which annotations to be deleted. Each element is in the format {id: string, pageNumber: int}

Returns a Promise.

// delete annotations in the current document.
this._viewer.deleteAnnotations([
    {
        id: 'annotId1',
        pageNumber: 1,
    },
    {
        id: 'annotId2',
        pageNumber: 2,
    }
]);

selectAnnotation

Selects the specified annotation in the current document.

Parameters:

NameTypeDescription
idstringthe id of the target annotation
pageNumberintegerthe page number where the targe annotation is located. It is 1-indexed

Returns a Promise.

// select annotation in the current document.
this._viewer.selectAnnotation('annotId1', 1);

setFlagsForAnnotations

Sets flags for specified annotations in the current document. The flagValue controls whether a flag will be set to or removed from the annotation.

Note: the old function setFlagForAnnotations is deprecated. Please use this one.

Parameters:

NameTypeDescription
annotationFlagListarrayA list of annotation flag operations. Each element is in the format {id: string, pageNumber: int, flag: Config.AnnotationFlags constants, flagValue: bool}

Returns a Promise.

//  Set flag for annotations in the current document.
this._viewer.setFlagsForAnnotations([
    {
        id: 'annotId1',
        pageNumber: 1,
        flag: Config.AnnotationFlags.noView,
        flagValue: true
    },
    {
        id: 'annotId2',
        pageNumber: 5,
        flag: Config.AnnotationFlags.lockedContents,
        flagValue: false
    }
]);

setPropertiesForAnnotation

Sets properties for specified annotation in the current document, if it is valid.

Note: the old function setPropertyForAnnotation is deprecated. Please use this one.

Parameters:

NameTypeDescription
annotationIdstringthe unique id of the annotation
pageNumberintegerthe page number where annotation is located. It is 1-indexed
propertyMapobjectan object containing properties to be set. Available properties are listed below

Properties in propertyMap:

NameTypeMarkup exclusiveExample
rectobjectno{x1: 1, y1: 2, x2: 3, y2: 4}
contentsstringno"contents"
subjectstringyes"subject"
titlestringyes"title"
contentRectobjectyes{x1: 1, y1: 2, x2: 3, y2: 4}
customDataobjectno{key: value}
strokeColorobjectno{red: 255, green: 0, blue: 0}

Returns a promise.

// Set properties for annotation in the current document.
this._viewer.setPropertiesForAnnotation('Pdftron', 1, {
  rect: {
    x1: 1.1,    // left
    y1: 3,      // bottom
    x2: 100.9,  // right
    y2: 99.8    // top
  },
  contents: 'Hello World',
  subject: 'Sample',
  title: 'set-prop-for-annot',
  customData: {
    key1: 'value1',
    key2: 'value2',
    key3: 'value3'
  },
  strokeColor: {
    "red": 255,
    "green": 0,
    "blue": 0
  }
});

getPropertiesForAnnotation

Gets properties for specified annotation in the current document, if it is valid.

Parameters:

NameTypeDescription
annotationIdstringthe unique id of the annotation
pageNumberintegerthe page number where annotation is located. It is 1-indexed

Available Properties:

NameTypeMarkup exclusiveExample
rectobjectno{x1: 1, y1: 1, x2: 2, y2: 2, width: 1, height: 1}
contentsstringno"Contents"
subjectstringyes"Subject"
titlestringyes"Title"
contentRectobjectyes{x1: 1, y1: 1, x2: 2, y2: 2, width: 1, height: 1}
strokeColorobjectno{red: 255, green: 0, blue: 0}

Returns a promise.

Promise Parameters:

NameTypeDescriptionExample
propertyMapobjectthe non-null properties of the annotation{contents: 'Contents', strokeColor: {red: 255, green: 0, blue: 0}, rect: {x1: 1, y1: 1, x2: 2, y2: 2, width: 1, height: 1}}
// Get properties for annotation in the current document.
this._viewer.getPropertiesForAnnotation('Pdftron', 1).then((properties) => {
  if (properties) {
    console.log('Properties for annotation: ', properties);
  }
})

setDrawAnnotations

Sets whether all annotations and forms should be rendered in the viewer.

Parameters:

NameTypeDescription
drawAnnotationsboolwhether all annotations and forms should be rendered

Returns a promise.

this._viewer.setDrawAnnotations(false);

setVisibilityForAnnotation

Sets visibility for specified annotation in the current document, if it is valid. Note that if drawAnnotations is set to false in the viewer, this function would not render the annotation even if visibility is true.

Parameters:

NameTypeDescription
annotationIdstringthe unique id of the annotation
pageNumberintegerthe page number where annotation is located. It is 1-indexed
visibilityboolwhether the annotation should be visible

Returns a promise.

this._viewer.setVisibilityForAnnotation('Pdftron', 1, true);

setHighlightFields

Enables or disables highlighting form fields. It is disabled by default.

Parameters:

NameTypeDescription
highlightFieldsboolwhether form fields should be highlighted
this._viewer.setHighlightFields(true);

getAnnotationAt

Gets an annotation at the (x, y) position in screen coordinates, if any.

Parameters:

NameTypeDescription
xintegerthe x-coordinate of the point
yintegerthe y-coordinate of the point
distanceThresholddoublemaximum distance from the point (x, y) to the annotation for it to be considered a hit (in dp)
minimumLineWeightdoubleFor very thin lines, it is almost impossible to hit the actual line. This specifies a minimum line thickness (in screen coordinates) for the purpose of calculating whether a point is inside the annotation or not (in dp)

Returns a Promise.

Promise Parameters:

NameTypeDescription
annotationobjectthe annotation found in the format of {id: string, pageNumber: number, type: string, rect: {x1: number, y1: number, x2: number, y2: number}}
this._viewer.getAnnotationAt(167, 287, 100, 10).then((annotation) => {
  if (annotation) {
    console.log('Annotation found at point (167, 287) has id:', annotation.id);
  }
})

getAnnotationListAt

Gets the list of annotations at a given line in screen coordinates. Note that this is not an area selection. It should be used similar to getAnnotationAt, except that this should be used when you want to get multiple annotations which are overlaying with each other.

Parameters:

NameTypeDescription
x1integerthe x-coordinate of an endpoint on the line
y1integerthe y-coordinate of an endpoint on the line
x2integerthe x-coordinate of the other endpoint on the line, usually used as a threshold
y2integerthe y-coordinate of the other endpoint on the line, usually used as a threshold

Returns a Promise.

Promise Parameters:

NameTypeDescription
annotationsarraylist of annotations at the target line, each in the format of {id: string, pageNumber: number, type: string, rect: {x1: number, y1: number, x2: number, y2: number}}
this._viewer.getAnnotationListAt(0, 0, 200, 200).then((annotations) => {
  for (const annotation of annotations) {
    console.log('Annotation found at line has id:', annotation.id);
  }
})

getAnnotationListOnPage

Gets the list of annotations on a given page.

Parameters:

NameTypeDescription
pageNumberintegerthe page number where annotations are located. It is 1-indexed

Returns a Promise.

Promise Parameters:

NameTypeDescription
annotationsarraylist of annotations on the target page, each in the format of {id: string, pageNumber: number, type: string, rect: {x1: number, y1: number, x2: number, y2: number}}
this._viewer.getAnnotationListOnPage(2).then((annotations) => {
  for (const annotation of annotations) {
    console.log('Annotation found on page 2 has id:', annotation.id);
  }
})

getCustomDataForAnnotation

Gets an annotation's customData property.

Parameters:

NameTypeDescription
annotationIdstringthe unique id of the annotation
pageNumberintegerthe page number where annotation is located. It is 1-indexed
keystringthe unique key associated with the customData property

Returns a Promise.

Promise Parameters:

NameTypeDescription
valuestringthe customData property associated with the given key
this._viewer.setPropertiesForAnnotation("annotation1", 2, {
  customData: {
    data: "Nice annotation"
  }
}).then(() => {
  this._viewer.getCustomDataForAnnotation("annotation1", 2, "data").then((value) => {
    console.log(value === "Nice annotation");
  })
})

setFlagForFields

Sets a field flag value on one or more form fields.

Parameters:

NameTypeDescription
fieldsarraylist of field names for which the flag should be set
flagintflag to be set. Number should be a Config.FieldFlags constant
valueboolvalue to set for flag

Returns a Promise.

this._viewer.setFlagForFields(['First Name', 'Last Name'], Config.FieldFlags.ReadOnly, true);

setValuesForFields

Sets field values on one or more form fields.

Note: the old function setValueForFields is deprecated. Please use this one instead.

Parameters:

NameTypeDescription
fieldsMapobjectmap of field names and values which should be set

Returns a Promise.

this._viewer.setValuesForFields({
  'textField1': 'Test',
  'textField2': 1234,
  'checkboxField1': true,
  'checkboxField2': false,
  'radioButton1': 'Yes',
  'radioButton2': 'No'
});

getField

Get type and value information of a field using its name.

Parameters:

NameTypeDescription
fieldNamestringname of the field

Returns a Promise.

Promise Parameters:

NameTypeDescription
fieldobjectan object with information key fieldName, fieldValue (undefined for fields with no values) and fieldType(one of button, checkbox, radio, text, choice, signature and unknown), or undefined if such field does not exist
this._viewer.getField('someFieldName').then((field) => {
  if (field !== undefined) {
    console.log('field name:', field.fieldName);
    console.log('field value:', field.fieldValue);
    console.log('field type:', field.fieldType);
  }
});

Navigation

handleBackButton

Handles the back button in search mode. Android only.

Returns a Promise.

Promise Parameters:

NameTypeDescription
handledboolwhether the back button is handled successfully
this._viewer.handleBackButton().then((handled) => {
  if (!handled) {
    BackHandler.exitApp();
  }
});

Bookmark

importBookmarkJson

Imports user bookmarks into the document. The input needs to be a valid bookmark JSON format.

Parameters:

NameTypeDescription
bookmarkJsonStringneeds to be in valid bookmark JSON format, for example {"0": "Page 1"}. The page numbers are 1-indexed

Returns a Promise.

this._viewer.importBookmarkJson("{\"0\": \"Page 1\", \"3\": \"Page 4\"}");

Multi-tab

closeAllTabs

Closes all tabs in multi-tab environment.

Returns a Promise.

// Do this only when DocumentView has multiTabEnabled = true
this._viewer.closeAllTabs();

Zoom

getZoom

Returns the current zoom scale of current document viewer.

Returns a Promise.

Promise Parameters:

NameTypeDescription
zoomdoublecurrent zoom scale in the viewer
this._viewer.getZoom().then((zoom) => {
  console.log('Zoom scale of the current document is:', zoom);
});

setZoomLimits

Sets the minimum and maximum zoom bounds of current viewer.

Parameters:

NameTypeDescription
zoomLimitModeStringone of the constants in Config.ZoomLimitMode, defines whether bounds are relative to the standard zoom scale in the current viewer or absolute
minimumdoublethe lower bound of the zoom limit range
maximumdoublethe upper bound of the zoom limit range

Returns a Promise.

this._viewer.setZoomLimits(Config.ZoomLimitMode.Absolute, 1.0, 3.5);

zoomWithCenter

Sets the zoom scale in the current document viewer with a zoom center.

Parameters:

NameTypeDescription
zoomdoublethe zoom ratio to be set
xintthe x-coordinate of the zoom center
yintthe y-coordinate of the zoom center

Returns a Promise.

this._viewer.zoomWithCenter(3.0, 100, 300);

zoomToRect

Zoom the viewer to a specific rectangular area in a page.

Parameters:

NameTypeDescription
pageNumberintthe page number of the zooming area (1-indexed)
rectmapThe rectangular area with keys x1 (left), y1(bottom), y1(right), y2(top). Coordinates are in double

Returns a Promise.

this._viewer.zoomToRect(3, {'x1': 1.0, 'y1': 2.0, 'x2': 3.0, 'y2': 4.0});

smartZoom

Zoom to a paragraph that contains the specified coordinate. If no paragraph contains the coordinate, the zooming would not happen.

Parameters:

NameTypeDescription
xintthe x-coordinate of the target coordinate
yintthe y-coordinate of the target coordinate
animatedboolwhether the transition is animated

Returns a Promise.

this._viewer.smartZoom(100, 200, true);

Scroll

getScrollPos

Returns the horizontal and vertical scroll position of current document viewer.

Returns a Promise.

Promise Parameters:

NameTypeDescription
horizontalnumbercurrent horizontal scroll position
verticalnumbercurrent vertical scroll position
this._viewer.getScrollPos().then(({horizontal, vertical}) => {
  console.log('Current horizontal scroll position is:', horizontal);
  console.log('Current vertical scroll position is:', vertical);
});

Canvas

getCanvasSize

Returns the canvas size of current document viewer.

Returns a Promise.

Promise Parameters:

NameTypeDescription
widthnumbercurrent width of canvas
heightnumbercurrent height of canvas
this._viewer.getCanvasSize().then(({width, height}) => {
  console.log('Current canvas width is:', width);
  console.log('Current canvas height is:', height);
});

Coordinate

convertPagePointsToScreenPoints

Converts points from page coordinates to screen coordinates in the viewer.

Parameters:

NameTypeDescription
pointsarraylist of points, each in the format {x: number, y: number}. You could optionally have a pageNumber: number in the object. Without specifying, the page system is referring to the current page

Returns a Promise.

Promise Parameters:

NameTypeDescription
convertedPointsarraylist of converted points in screen system, each in the format {x: number, y: number}. It would be empty if conversion is unsuccessful
// convert (50, 50) on current page and (100, 100) on page 1 from page system to screen system
this._viewer.convertPagePointsToScreenPoints([{x: 50, y: 50}, {x: 100, y:100, pageNumber: 1}]).then((convertedPoints) => {
  convertedPoints.forEach(point => {
    console.log(point);
  })
});

convertScreenPointsToPagePoints

Converts points from screen coordinates to page coordinates in the viewer.

Parameters:

NameTypeDescription
pointsarraylist of points, each in the format {x: number, y: number}. You could optionally have a pageNumber: number in the object. Without specifying, the page system is referring to the current page

Returns a Promise.

Promise Parameters:

NameTypeDescription
convertedPointsarraylist of converted points in page system, each in the format {x: number, y: number}. It would be empty if conversion is unsuccessful
// convert (50, 50) and (100, 100) from screen system to page system, on current page and page 1 respectively
this._viewer.convertScreenPointsToPagePoints([{x: 50, y: 50}, {x: 100, y:100, pageNumber: 1}]).then((convertedPoints) => {
  convertedPoints.forEach(point => {
    console.log(point);
  })
});

getPageNumberFromScreenPoint

Returns the page number that contains the point on screen.

Parameters:

NameTypeDescription
xnumberthe x-coordinate of the screen point
ynumberthe y-coordinate of the screen point

Returns a Promise.

Promise Parameters:

NameTypeDescription
pageNumbernumberthe page number of the screen point
this._viewer.getPageNumberFromScreenPoint(10.0,50.5).then((pageNumber) => {
  console.log('The page number of the screen point is', pageNumber);
});

Rendering Options

setProgressiveRendering

Sets whether the control will render progressively or will just draw once the entire view has been rendered.

Parameters:

NameTypeDescription
progressiveRenderingboolwhether to render progressively
initialDelaynumberdelay before the progressive rendering timer is started, in milliseconds
intervalnumberdelay between refreshes, in milliseconds

Returns a Promise.

// delay for 10s before start, and refresh every 1s
this._viewer.setProgressiveRendering(true, 10000, 1000);

setImageSmoothing

Enables or disables image smoothing. The rasterizer allows a trade-off between rendering quality and rendering speed. This function can be used to indicate the preference between rendering speed and quality.

Parameters:

NameTypeDescription
imageSmoothingboolwhether to enable image smoothing

Returns a Promise.

this._viewer.setImageSmoothing(false);

setOverprint

Enables or disables support for overprint and overprint simulation. Overprint is a device dependent feature and the results will vary depending on the output color space and supported colorants (i.e. CMYK, CMYK+spot, RGB, etc).

Parameters:

NameTypeDescription
overprintstringthe mode of overprint, should be a Config.OverprintMode constant

Returns a Promise.

this._viewer.setOverprint(Config.OverprintMode.Off);

Viewer Options

setUrlExtraction

Sets whether to extract urls from the current document, which is disabled by default. It is recommended to set this value before document is opened.

Parameters:

NameTypeDescription
urlExtractionboolwhether to extract urls from the current document
this._viewer.setUrlExtraction(true);

setPageBorderVisibility

Sets whether borders of each page are visible in the viewer, which is disabled by default.

Parameters:

NameTypeDescription
pageBorderVisibilityboolwhether borders of each page are visible in the viewer
this._viewer.setPageBorderVisibility(true);

setPageTransparencyGrid

Enables or disables transparency grid (check board pattern) to reflect page transparency, which is disabled by default.

Parameters:

NameTypeDescription
pageTransparencyGridboolwhether to use the transpareny grid
this._viewer.setPageTransparencyGrid(true);

setBackgroundColor

Sets the background color of the viewer.

Parameters:

NameTypeDescription
backgroundColorobjectthe background color, in the format {red: number, green: number, blue: number}, each number in range [0, 255]
this._viewer.setBackgroundColor({red: 0, green: 0, blue: 255}); // blue color

setDefaultPageColor

Sets the default page color of the viewer.

Parameters:

NameTypeDescription
defaultPageColorobjectthe default page color, in the format {red: number, green: number, blue: number}, each number in range [0, 255]
this._viewer.setDefaultPageColor({red: 0, green: 255, blue: 0}); // green color

Text Selection

findText

Searches asynchronously, starting from the current page, for the given text. PDFViewCtrl automatically scrolls to the position so that the found text is visible.

Returns a Promise.

Promise Parameters:

NameTypeDescription
searchStringstringthe text to search for
matchCaseboolindicates if it is case sensitive
matchWholeWordboolindicates if it matches an entire word only
searchUpboolindicates if it searches upward
regExpboolindicates if searchString is a regular expression
this._viewer.findText('PDFTron', false, false, true, false);

cancelFindText

Cancels the current text search thread, if exists.

Returns a Promise.

this._viewer.cancelFindText();

getSelection

Returns the text selection on a given page, if any.

Returns a Promise.

Promise Parameters:

NameTypeDescription
selectionobjectthe text selection, in the format {html: string, unicode: string, pageNumber: number, quads: [[{x: number, y: number}, {x: number, y: number}, {x: number, y: number}, {x: number, y: number}], ...]}. If no such selection could be found, this would be null

quads indicate the quad boundary boxes for the selection, which could have a size larger than 1 if selection spans across different lines. Each quad have 4 points with x, y coordinates specified in number, representing a boundary box. The 4 points are in counter-clockwise order, though the first point is not guaranteed to be on lower-left relatively to the box.

this._viewer.getSelection(2).then((selection) => {
  if (selection) {
    console.log('Found selection on page', selection.pageNumber);
    for (let i = 0; i < selection.quads.length; i ++) {
      const quad = selection.quads[i];
      console.log('selection boundary quad', i);
      for (const quadPoint of quad) {
        console.log('A quad point has coordinates', quadPoint.x, quadPoint.y);
      }
    }
  }
});

hasSelection

Returns whether there is a text selection in the current document.

Returns a Promise.

Promise Parameters:

NameTypeDescription
hasSelectionboolwhether a text selection exists
this._viewer.hasSelection().then((hasSelection) => {
  console.log('There is a selection in the document.');
});

clearSelection

Clears any text selection in the current document.

Returns a Promise.

this._viewer.clearSelection();

getPageSelectionRange

Returns the page range (beginning and end) that has text selection on it.

Returns a Promise.

Promise Parameters:

NameTypeDescription
beginnumberthe first page to have selection, -1 if there are no selections
endnumberthe last page to have selection, -1 if there are no selections
this._viewer.getPageSelectionRange().then(({begin, end}) => {
  if (begin === -1) {
    console.log('There is no selection');
  } else {
    console.log('The selection range is from', begin, 'to', end);
  }
});

hasSelectionOnPage

Returns whether there is a text selection on the specified page in the current document.

Parameters:

NameTypeDescription
pageNumbernumberthe specified page number. It is 1-indexed

Returns a Promise.

Promise Parameters:

NameTypeDescription
hasSelectionboolwhether a text selection exists on the specified page
this._viewer.hasSelectionOnPage(5).then((hasSelection) => {
  if (hasSelection) {
    console.log('There is a selection on page 5 in the document.');
  }
});

selectInRect

Selects the text within the given rectangle region.

Parameters:

NameTypeDescription
rectobjectthe rectangle region in the format of x1: number, x2: number, y1: number, y2: number

Returns a Promise.

Promise Parameters:

NameTypeDescription
selectedboolwhether there is text selected
this._viewer.selectInRect({x1: 0, y1: 0, x2: 200.5, y2: 200.5}).then((selected) => {
        console.log(selected);
});

isThereTextInRect

Returns whether there is text in given rectangle region.

Parameters:

NameTypeDescription
rectobjectthe rectangle region in the format of x1: number, x2: number, y1: number, y2: number

Returns a Promise.

Promise Parameters:

NameTypeDescription
hasTextboolwhether there is text in the region
this._viewer.isThereTextInRect({x1: 0, y1: 0, x2: 200, y2: 200}).then((hasText) => {
        console.log(hasText);
});

selectAll

Selects all text on the page.

Returns a Promise.

this._viewer.selectAll();
});

exportAsImage

Export a PDF page to image format defined in Config.ExportFormat.

Parameters:

NameTypeDescription
pageNumberintthe page to be converted
dpidoublethe output image resolution
exportFormatstringone of Config.ExportFormat

Returns a Promise.

NameTypeDescription
pathstringthe temp path of the created image, user is responsible for clean up the cache
this._viewer.exportToImage(1, 92, Config.ExportFormat.BMP).then((path) => {
  console.log('export', path);
});

undo

Undo the last modification.

Returns a Promise.

this._viewer.undo();

redo

Redo the last modification.

Returns a Promise.

this._viewer.redo();

showCrop

Displays the page crop option. Android only.

Returns a Promise.

this._viewer.showCrop();

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