Class: Win32::Clipboard

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

Class Method Summary collapse

Class Method Details

.registerHTML ⇒ Object 



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# File 'lib/htmlclipboard.rb', line 11

def self.registerHTML
  if not @cfHTML
    @cfHTML = Win32::Clipboard.RegisterClipboardFormat("HTML Format")
  end
end

.set_html_data(clip_data) ⇒ Object 



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# File 'lib/htmlclipboard.rb', line 29

def self.set_html_data(clip_data)
  sDataStart  = "<HTML><BODY>\n<!--StartFragment -->"
  sDataEnd = "<!--EndFragment -->\n</BODY></HTML>"
  sData = ""
  #

  # Clipboard Header:   looks like ->

  # Version: 1.0

  #    StartHTML:0000000000

  #    EndHTML:0000000000

  #    StartFragment:0000000000

  #    EndFragment:0000000000

  sDataHdr = "Version:1.0\r\nStartHTML:aaaaaaaaaa\r\nEndHTML:bbbbbbbbbb\r\n"
  sDataHdr += "StartFragment:cccccccccc\r\nEndFragment:dddddddddd\r\n"
  sData = sDataHdr + sDataStart + clip_data + sDataEnd

  sData = sData.gsub(/aaaaaaaaaa/) { zeroFmt(sDataHdr.length) }
  sData = sData.gsub(/bbbbbbbbbb/) { zeroFmt(sData.length) }
  sData = sData.gsub(/cccccccccc/) { zeroFmt(sDataHdr.length + sDataStart.length) }
  sData = sData.gsub(/dddddddddd/) { zeroFmt(sDataHdr.length + sDataStart.length + clip_data.length) }

  if not @cfHTML
    self.registerHTML
  end

  self.open
  EmptyClipboard()
  hmem = GlobalAlloc(GHND, sData.length + 10)
  mem  = GlobalLock(hmem)
  memcpy(mem, sData, sData.length)
  begin
    if SetClipboardData(@cfHTML, hmem) == 0
      raise Error, "SetClipboardData() failed; " + get_last_error
    end
  ensure
   GlobalFree(hmem)
   self.close
  end
  self
end

.zeroFmt(nbr) ⇒ Object

zeroFmt(nbr)

--  Takes a number and formats with zero's in front.
    1234 => "0000001234"
    23   => "0000000023"



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# File 'lib/htmlclipboard.rb', line 23

def self.zeroFmt(nbr)
  zeros = "0"*10
  len = nbr.to_s.length        # this is the number of digits in the number  2784 => 4

  return zeros.slice(0..(zeros.length - len - 1)) + nbr.to_s
end