Method: Exerb::Win32::IconFile#read

Defined in:
lib/exerb/win32/icon_file.rb

#read(io) ⇒ Object 



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# File 'lib/exerb/win32/icon_file.rb', line 34

def read(io)
  base = io.pos
  icon_header = Exerb::Win32::Struct::IconHeader.read(io)

  @entries = (1..icon_header.count).collect {
    Exerb::Win32::Struct::IconDirEntry.read(io)
  }.collect { |icon_dir_entry|
    io.seek(base + icon_dir_entry.image_offset)
    icon_image_header = Exerb::Win32::Struct::IconImageHeader.read(io)
    io.seek(icon_image_header.position)

    entry = Exerb::Win32::IconFile::Entry.new
    entry.width     = icon_dir_entry.width
    entry.height    = icon_dir_entry.height
    entry.bit_count = icon_image_header.bit_count
    entry.value     = io.read(icon_dir_entry.bytes_in_res)
    if entry.width == 0
      entry.bit_count = icon_dir_entry.bit_count
      entry.width = entry.height = 256
    end
    entry
  }

  return self
end