module DiscreetProxy

The whole module for making and reading Flame proxy icon files

Constants

DEFAULT_HEIGHT
DEFAULT_WIDTH
MAGIC
PROXY_DEPTH
PROXY_VERSION
VERSION
VERSION_BSWAP

Public Class Methods

from_file(path) click to toggle source

Parse a .p file and return a Proxy

# File lib/discreet_proxy.rb, line 8
def self.from_file(path)
  File.open(path, "rb") {|f| from_io(f) }
end

from_io(io) click to toggle source

Parses out the proxy contained in the passed IO object

# File lib/discreet_proxy.rb, line 24
def self.from_io(io)
  pat = "na6nnn"
  
  magik, version_bswap, width, height, depth, _ = io.read(40).unpack(pat)
  raise "The passed data did not start with the magic bytes #{MAGIC}" if magik != MAGIC
  
  # This version check is busted for now, somehow
  ver = version_bswap.reverse.unpack("e").pop
  $stderr.puts "The passed version #{ver} is suspicious" if (ver - PROXY_VERSION).abs > 0.0001
  raise "Unknown proxy depth #{depth}" if depth != PROXY_DEPTH
  
  p = Proxy.new(width, height)
  p.fill_pixbuf(io)
  return p
end

from_png(png) click to toggle source

Creates a proxy object from a passed ChunkyPNG

# File lib/discreet_proxy.rb, line 13
def self.from_png(png)
  p = Proxy.new(png.width, png.height)
  (0...png.width).each do | x |
    (0...png.height).each do | y |
      p[x,y] = png[x,y]
    end
  end
  p
end