Class: Rpdfium::TextPage

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

Overview

Wrapper per FPDF_TEXTPAGE

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(page) ⇒ TextPage

Returns a new instance of TextPage.

Raises:



1588
1589
1590
1591
1592
1593
1594
 
# File 'lib/rpdfium/page.rb', line 1588

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 



1596
1597
1598
1599
1600
1601
1602
1603
1604
 
# File 'lib/rpdfium/page.rb', line 1596

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 



1610
1611
1612
 
# File 'lib/rpdfium/page.rb', line 1610

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

#close ⇒ Object 



1614
1615
1616
1617
1618
1619
1620
1621
 
# File 'lib/rpdfium/page.rb', line 1614

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 



1606
1607
1608
 
# File 'lib/rpdfium/page.rb', line 1606

def handle
  @state[:handle]
end