module GLFW

# File lib/glfw.rb, line 462
def self.create_callback( sym, proc=nil, &blk )
  return self.create_callback_closure( sym, proc, &blk )
end

# File lib/glfw.rb, line 451
def self.create_callback_closure( sym, proc=nil, &blk )
  cb_retval = @@glfw_cb_closure_signature[sym][0]
  cb_args   = @@glfw_cb_closure_signature[sym][1]
  if block_given?
    return Fiddle::Closure::BlockCaller.new( cb_retval, cb_args, Fiddle::Function::DEFAULT, &blk )
  else
    return Fiddle::Closure::BlockCaller.new( cb_retval, cb_args, Fiddle::Function::DEFAULT, &proc )
  end
end

# File lib/glfw.rb, line 381
def self.create_callback_function( sym, proc=nil, &blk )
  if block_given?
    return bind( @@glfw_cb_function_signature[sym], nil, &blk )
  else
    return bind( @@glfw_cb_function_signature[sym], nil, &proc )
  end
end

# File lib/glfw.rb, line 14
  def self.extern(signature, *opts)
    symname, ctype, argtype = parse_signature(signature, @type_alias)
    opt = parse_bind_options(opts)
    f = import_function(symname, ctype, argtype, opt[:call_type])
    name = symname.gsub(/@.+/,'')
    GLFW_FUNCTIONS_MAP[name] = f
    begin
      /^(.+?):(\d+)/ =~ caller.first
      file, line = $1, $2.to_i
    rescue
      file, line = __FILE__, __LINE__+3
    end
    args_str="*args"
    module_eval(<<-EOS, file, line)
      def #{name}(*args, &block)
        GLFW_FUNCTIONS_MAP['#{name}'].call(*args,&block)
      end
    EOS
    module_function(name)
    f
  end

# File lib/glfw.rb, line 661
def self.import_symbols(output_error = false)
  typealias 'GLFWuint64', 'unsigned long long' # Available since GLFW 3.2

  # function
  @@lib_signature.each do |sig|
    begin
      extern sig
    rescue
      $stderr.puts("[Warning] Failed to import #{sig}.") if output_error
    end
  end

  ver_major = ' ' * 4
  ver_minor = ' ' * 4
  ver_rev   = ' ' * 4
  glfwGetVersion(ver_major, ver_minor, ver_rev)

  GLFW.const_set('GLFW_VERSION_MAJOR',  ver_major.unpack('L')[0])
  GLFW.const_set('GLFW_VERSION_MINOR',  ver_minor.unpack('L')[0])
  GLFW.const_set('GLFW_VERSION_REVISION', ver_rev.unpack('L')[0])

  @@glfw_import_done = true
end

# File lib/glfw.rb, line 511
def self.load_dll(lib = nil, path = nil)
  puts "Warning GLFW.load_dll is deprecated, use GLFW.load_lib instead"
  self.load_lib(lib, path)
end

# File lib/glfw.rb, line 491
def self.load_lib(lib = nil, path = nil, output_error = false)
  if lib == nil && path == nil
    case OpenGL.get_platform
    when :OPENGL_PLATFORM_WINDOWS
      lib, path = 'GLFW3.dll', Dir.pwd
    when :OPENGL_PLATFORM_MACOSX
      lib, path = 'libglfw.dylib', Dir.pwd
    else
      lib = 'libglfw.so.3'
    end
  end

  if path
    dlload (path + '/' + lib)
  else
    dlload (lib)
  end
  import_symbols(output_error) unless @@glfw_import_done
end