Class: Rpdfium::TextPage

Inherits:
Object
  • Object
show all
Defined in:
lib/rpdfium/page.rb

Overview

Wrapper for FPDF_TEXTPAGE

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(page) ⇒ TextPage

Returns a new instance of TextPage.

Raises:



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# File 'lib/rpdfium/page.rb', line 1643

def initialize(page)
  handle = Raw.FPDFText_LoadPage(page.handle)
  raise PageError, 'Could not load text page' if handle.null?

  @state = { handle: handle, closed: false }
  ObjectSpace.define_finalizer(self, self.class.finalizer(@state))
end

Class Method Details

.finalizer(state) ⇒ Object 



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# File 'lib/rpdfium/page.rb', line 1651

def self.finalizer(state)
  proc do
    next if state[:closed]
    next if state[:handle].null?

    Raw.FPDFText_ClosePage(state[:handle])
    state[:closed] = true
  end
end

Instance Method Details

#char_count ⇒ Object 



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# File 'lib/rpdfium/page.rb', line 1665

def char_count
  Raw.FPDFText_CountChars(@state[:handle])
end

#close ⇒ Object 



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# File 'lib/rpdfium/page.rb', line 1669

def close
  return if @state[:closed]

  Raw.FPDFText_ClosePage(@state[:handle]) unless @state[:handle].null?
  @state[:handle] = FFI::Pointer::NULL
  @state[:closed] = true
  ObjectSpace.undefine_finalizer(self)
end

#handle ⇒ Object 



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# File 'lib/rpdfium/page.rb', line 1661

def handle
  @state[:handle]
end