Trim some whitespace
This commit is contained in:
parent
4fe8e25edd
commit
13425f3e4b
@ -5,22 +5,22 @@ module Compass
|
||||
# A simple class to represent and create a PNG-File
|
||||
# No drawing features given
|
||||
# Just subclass and write [R,G,B]-Byte-Values into the <tt>@data</tt> matrix
|
||||
# Build for compactness, so not much error checking!
|
||||
# Build for compactness, so not much error checking!
|
||||
#
|
||||
# Code based on seattlerb's png, see http://seattlerb.rubyforge.org/png/
|
||||
class PNG
|
||||
CRC_TABLE = (0..255).map do |n|
|
||||
CRC_TABLE = (0..255).map do |n|
|
||||
8.times.inject(n){|x,i| x = ((x & 1) == 1) ? 0xedb88320 ^ (x >> 1) : x >> 1}
|
||||
end
|
||||
end
|
||||
|
||||
class << self
|
||||
def crc(chunkdata='')
|
||||
def crc(chunkdata='')
|
||||
chunkdata.bytes.to_a.inject(0xffffffff){|crc, byte| CRC_TABLE[(crc ^ byte) & 0xff] ^ (crc >> 8) } ^ 0xffffffff
|
||||
end
|
||||
|
||||
def chunk(type, data="")
|
||||
[data.size, type, data, crc(type + data)].pack("Na*a*N")
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
# Initiates a new PNG-Object
|
||||
@ -30,13 +30,13 @@ module Compass
|
||||
def initialize(width, height, background = [255,255,255])
|
||||
@height = height
|
||||
@width = width
|
||||
@data = Array.new(@height) { |x| Array.new(@width, background) }
|
||||
@data = Array.new(@height) { |x| Array.new(@width, background) }
|
||||
end
|
||||
|
||||
|
||||
BITS = 8
|
||||
RGB = 2 # Color Types ( RGBA = 6)
|
||||
NONE = 0 # Filter
|
||||
|
||||
|
||||
# binary representation of the PNG, write to file with binary mode
|
||||
def to_blob
|
||||
blob = []
|
||||
@ -51,7 +51,7 @@ module Compass
|
||||
@data.map { |row| "\0" + row.map { |p| "%c%c%c" % p}.join }.join
|
||||
end
|
||||
end
|
||||
|
||||
|
||||
class GridBuilder < PNG
|
||||
include Actions
|
||||
|
||||
@ -70,18 +70,18 @@ module Compass
|
||||
height = options[:height] || 20
|
||||
@filename = options[:filename]
|
||||
@options = options
|
||||
|
||||
super(@column_width + gutter_width, height, [0xe9,0xe9,0xe9])
|
||||
|
||||
super(@column_width + gutter_width, height, [0xe9,0xe9,0xe9])
|
||||
end
|
||||
|
||||
def working_path
|
||||
options[:working_path]
|
||||
end
|
||||
|
||||
|
||||
# generates (overwriting if necessary) grid.png image to be tiled in background
|
||||
def generate!
|
||||
(0...@height-1).each do |line|
|
||||
@data[line] = Array.new(@width){|x| x < @column_width ? [0xe8, 0xef, 0xfb] : [0xff,0xff,0xff] }
|
||||
@data[line] = Array.new(@width){|x| x < @column_width ? [0xe8, 0xef, 0xfb] : [0xff,0xff,0xff] }
|
||||
end
|
||||
|
||||
if File.exists?(filename)
|
||||
|
Loading…
Reference in New Issue
Block a user