NAME

       PDF::Builder::ViewerPreferences - How the PDF should be displayed or printed

METHODS

       This has been split out from "preferences()" in PDF::Builder.

       $self = $class->new($pdf)
           Creates a new ViewerPreferences object from a PDF::Builder object.

       %preferences = $self->get_preferences()
           Returns a hash containing all of the viewer preferences that are defined in the PDF.

       $value = $self->get_preference($name)
           Returns the value of the specified viewer preference if present, or "undef" if not.

       $self->set_preferences(%values)
           Sets one or more viewer preferences, as described in the preferences section below.

PREFERENCES

       Viewer Preferences describe how the document should be presented on screen or in print.
       Not all PDF viewers will respect these preferences.

       Boolean preferences default to false and take (or return) 0 or 1 as arguments.

       Bounding Box preferences take (or return) one of "media_box", "crop_box", "bleed_box",
       "trim_box", or "art_box".

       hide_toolbar (boolean)
           A flag specifying whether to hide the tool bars when the document is active.

       hide_menubar (boolean)
           A flag specifying whether to hide the menu bar when the document is active.

       hide_window_ui (boolean)
           A flag specifying whether to hide the user interface elements in the document's window
           (such as scroll bars and navigation controls), leaving only the document's contents
           displayed.

       fit_window (boolean)
           A flag specifying whether to resize the document's window to fit the size of the first
           displayed page.

       center_window (boolean)
           A flag specifying whether to position the document's window in the center of the
           screen.

       display_doc_title (boolean)
           A flag specifying whether the window's title bar should display the document title
           taken from the Title entry of the document information directory.  If false, the title
           bar should instead display the name of the PDF file containing the document.

       non_full_screen_page_mode (name)
           The document's page mode, specifying how to display the document on exiting full-
           screen mode.  Options are the same as "page_mode" in PDF::Builder, except that the
           "attachments" and "full_screen" options aren't supported.

       direction ('l2r' or 'r2l')
           The predominant reading order for text (left-to-right or right-to-left).

           This entry has no direct effect on the document's contents or page numbering but may
           be used to determine the relative positioning of pages when displayed side-by-side or
           printed n-up.

       view_area (bounding box)
           The name of the page boundary representing the area of a page that shall be displayed
           when viewing the document on the screen.

       view_clip (bounding box)
           The name of the page boundary to which the contents of a page shall be clipped when
           viewing the document on the screen.

       print_area (bounding box)
           The name of the page boundary representing the area of a page that shall be rendered
           when printing the document.

       print_clip (bounding box)
           The name of the page boundary to which the contents of a page shall be clipped when
           printing the document.

       print_scaling ('none' or 'app_default')
           The page scaling option that shall be selected when a print dialog is displayed for
           this document.  "none" represents no page scaling, and "app_default" represents the
           reader's default print scaling.

       duplex ('simplex', 'duplex_short', or 'duplex_long')
           The paper handling option that shall be used when printing the file from the print
           dialog.  The duplex values represent whether the page should be flipped on its short
           edge or long edge, respectively.

       pick_tray_by_pdf_size (boolean)
           A flag specifying whether the PDF page size shall be used to select the input paper
           tray.  This setting influences only the preset values used to populate the print
           dialog presented by the reader.

       print_page_rage (an array of integer pairs)
           The page numbers used to initialize the print dialog box when the file is printed.
           The array shall contain an even number of integers to be interpreted in pairs, with
           each pair specifying the first and last pages in a sub-range of pages to be printed.
           The first page of the PDF file shall be denoted by 1.

       num_copies (integer)
           The number of copies that shall be printed when the print dialog is opened for this
           file.