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Versions: 26
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Contents
begin
require 'rubygems'
gem 'rmagick'
require 'rvg/rvg'
rescue Exception => e
end
module Blueprint
# Uses ImageMagick and RMagick to generate grid.png file
class GridBuilder
begin
include Magick
rescue Exception => e
end
attr_reader :column_width, :gutter_width, :output_path, :able_to_generate
# ==== Options
# * <tt>options</tt>
# * <tt>:column_width</tt> -- Width (in pixels) of current grid column
# * <tt>:gutter_width</tt> -- Width (in pixels) of current grid gutter
# * <tt>:output_path</tt> -- Output path of grid.png file
def initialize(options={})
@able_to_generate = Magick::Long_version rescue false
return unless @able_to_generate
@column_width = options[:column_width] || Blueprint::COLUMN_WIDTH
@gutter_width = options[:gutter_width] || Blueprint::GUTTER_WIDTH
@output_path = options[:output_path] || Blueprint::SOURCE_PATH
end
# generates (overwriting if necessary) grid.png image to be tiled in background
def generate!
return false unless self.able_to_generate
total_width = self.column_width + self.gutter_width
height = 20
RVG::dpi = 100
rvg = RVG.new((total_width.to_f/RVG::dpi).in, (height.to_f/RVG::dpi).in).viewbox(0, 0, total_width, height) do |canvas|
canvas.background_fill = 'white'
canvas.g do |column|
column.rect(self.column_width, height).styles(:fill => "#e8effb")
end
canvas.g do |baseline|
baseline.line(0, (height - 1), total_width, (height- 1)).styles(:fill => "#e9e9e9")
end
end
FileUtils.mkdir self.output_path unless File.exists? self.output_path
rvg.draw.write(File.join(self.output_path, "grid.png"))
end
end
end
Version data entries
26 entries across 26 versions & 6 rubygems