Class: ResizeCss

Inherits:
Object
  • Object
show all
Defined in:
lib/world_flags/tools/resize_css.rb

Overview

TODO: Needs some heavy refactoring and cleaning up!

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(base_size, new_size, options) ⇒ ResizeCss

Returns a new instance of ResizeCss.



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# File 'lib/world_flags/tools/resize_css.rb', line 14

def initialize base_size, new_size, options
  @base_size  = base_size
  @new_size   = new_size
  @options    = options

  @stylesheet_folder = options[:stylesheet_folder]  if options[:stylesheet_folder]
  @stylesheet_name   = options[:stylesheet_name]    if options[:stylesheet_name]
  @sprite_name       = options[:sprite_name]        if options[:sprite_name]
  @template_lang     = options[:template_lang]      if options[:template_lang]
  @size_prefix       = options[:size_prefix]        if options[:size_prefix]
  
  resize = "convert #{sprite_name}#{base_size}.png -resize #{factor * 100}%"
  new_file_name = "#{sprite_name}#{new_size}"

  command_resize = "#{resize} #{new_file_name}.png"
  command_resize_light = "#{resize} #{lighten} #{new_file_name}_light.png"
  command_resize_dark  = "#{resize} #{darken} #{new_file_name}_dark.png"
  command_resize_gray  = "#{resize} #{grayscale} #{new_file_name}_gray.png"

  if auto_exec?
    Open3.popen3("pwd") do |stdin, stdout, e, t|
      base_dir = stdout
      Open3.popen3 "cd #{images_dir}"

      Open3.popen3 command_resize
      Open3.popen3 command_resize_light if lighten?
      Open3.popen3 command_resize_dark if darken?
      Open3.popen3 command_resize_gray if gray? 

      Open3.popen3 "cd #{base_dir}"
    end
  else
    puts "Use ImageMagick to resize #{sprite_name} sprites:"  
    puts command_resize
    puts command_resize_light if lighten?
    puts command_resize_dark if darken?
    puts command_resize_gray if gray? 
  end
end

Instance Attribute Details

#base_size ⇒ Object (readonly)

Returns the value of attribute base_size.



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# File 'lib/world_flags/tools/resize_css.rb', line 11

def base_size
  @base_size
end

#new_size ⇒ Object (readonly)

Returns the value of attribute new_size.



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# File 'lib/world_flags/tools/resize_css.rb', line 11

def new_size
  @new_size
end

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/world_flags/tools/resize_css.rb', line 12

def options
  @options
end

#size_prefix ⇒ Object (readonly)

Returns the value of attribute size_prefix.



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# File 'lib/world_flags/tools/resize_css.rb', line 12

def size_prefix
  @size_prefix
end

#sprite_name ⇒ Object (readonly)

Returns the value of attribute sprite_name.



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# File 'lib/world_flags/tools/resize_css.rb', line 11

def sprite_name
  @sprite_name
end

#stylesheet_folder ⇒ Object (readonly)

Returns the value of attribute stylesheet_folder.



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# File 'lib/world_flags/tools/resize_css.rb', line 11

def stylesheet_folder
  @stylesheet_folder
end

#stylesheet_name ⇒ Object (readonly)

Returns the value of attribute stylesheet_name.



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# File 'lib/world_flags/tools/resize_css.rb', line 11

def stylesheet_name
  @stylesheet_name
end

#template_lang ⇒ Object (readonly)

Returns the value of attribute template_lang.



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# File 'lib/world_flags/tools/resize_css.rb', line 12

def template_lang
  @template_lang
end

Instance Method Details

#auto_exec? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/world_flags/tools/resize_css.rb', line 78

def auto_exec?
  options[:auto_exec]
end

#blank?(txt) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/world_flags/tools/resize_css.rb', line 122

def blank? txt
  !txt || txt.empty?
end

#darken ⇒ Object 



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# File 'lib/world_flags/tools/resize_css.rb', line 70

def darken
  "-level 0%,100%,0.5"
end

#darken? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/world_flags/tools/resize_css.rb', line 58

def darken?
  options[:dark]
end

#execute(options = {:ext => 'css', :semi => false}) ⇒ Object 



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# File 'lib/world_flags/tools/resize_css.rb', line 126

def execute options = {:ext => 'css', :semi => false}
  semi = options[:semi] ? '-semi': ''
  ext = options[:ext] ? options[:ext] : 'css'
  src_file_path = File.expand_path "#{stylesheet_full_path}/#{stylesheet_name}#{base_size}#{semi}.#{ext}#{template_ext}", File.dirname(__FILE__)
  target_file_path = File.expand_path "#{stylesheet_full_path}/#{stylesheet_name}#{new_size}#{semi}.#{ext}#{template_ext}", File.dirname(__FILE__)

  puts "src: #{src_file_path} -> #{target_file_path}"

  lines = File.open(src_file_path).readlines

  img_exp = "#{sprite_name}-#{base_size}"
  replace_img = "#{sprite_name}-#{new_size}"

  # puts "img_exp: #{img_exp}"
  # puts "replace_img: #{replace_img}"

  repositioned_css = lines.map do |line|
    pos_match = line.match /.+position:\s-?(\d+)(px)?\s-?(\d+)(px)?/
    # puts "pos_match: #{line} - #{pos_match.inspect}"
    img_match = line.match /#{img_exp}/
    new_line = line.sub(/#{img_exp}/, replace_img) if img_match
    new_line = replace_pos pos_match, line if pos_match
    # puts "line: #{line} -> #{new_line}"
    new_line ||= line
    new_line
  end.join("")

  puts "Write new CSS:"
  puts repositioned_css
  
  File.open(target_file_path, 'w') do |f|
    f.puts repositioned_css.gsub ".#{size_prefix}#{base_size}", ".#{size_prefix}#{new_size}"
  end
end

#factor ⇒ Object 



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# File 'lib/world_flags/tools/resize_css.rb', line 161

def factor
  @factor ||= new_size / base_size.to_f
end

#gray? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/world_flags/tools/resize_css.rb', line 62

def gray?
  options[:gray]
end

#grayscale ⇒ Object 



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# File 'lib/world_flags/tools/resize_css.rb', line 74

def grayscale
  "-colorspace Gray"
end

#images_dir ⇒ Object 



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# File 'lib/world_flags/tools/resize_css.rb', line 90

def images_dir
  @images_dir ||= File.join(vendor_assets_path, 'images')
end

#lighten ⇒ Object 



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# File 'lib/world_flags/tools/resize_css.rb', line 66

def lighten
  "-level 0%,100%,2.0"
end

#lighten? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/world_flags/tools/resize_css.rb', line 54

def lighten?
  options[:light]
end

#replace_pos(pos_match, line) ⇒ Object 



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# File 'lib/world_flags/tools/resize_css.rb', line 165

def replace_pos pos_match, line
  pos_x = pos_match[1].to_i        
  new_pos_x = (pos_x * factor).to_i.to_s

  pos_y = pos_match[3].to_i        
  new_pos_y = (pos_y * factor).to_i.to_s
  
  # puts "new pos: #{new_pos_x}, #{new_pos_y}"
  
  rest = line[6..-1]
  rest = rest.sub /#{pos_x}/, new_pos_x.to_s
  rest = rest.sub /#{pos_y}/, new_pos_y.to_s

  rest = rest.gsub /#{base_size}px;/, "#{new_size}px;"

  # first = line[0..10].sub(".f#{base_size}", ".f#{newsize}") 
  line[0..5] + rest
end

#stylesheet_full_path ⇒ Object 



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# File 'lib/world_flags/tools/resize_css.rb', line 102

def stylesheet_full_path
  @stylesheet_full_path ||= File.join(stylesheets_dir, stylesheets_folder)
end

#stylesheets_dir ⇒ Object 



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# File 'lib/world_flags/tools/resize_css.rb', line 94

def stylesheets_dir
  @stylesheets_dir ||= File.join(vendor_assets_path, 'stylesheets')
end

#stylesheets_folder ⇒ Object 



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# File 'lib/world_flags/tools/resize_css.rb', line 98

def stylesheets_folder
  @stylesheets_folder ||= "flags"
end

#template_ext ⇒ Object 



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# File 'lib/world_flags/tools/resize_css.rb', line 118

def template_ext
  !blank?(template_lang) ? ".#{template_lang}" : ''
end

#vendor_assets_path ⇒ Object 



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# File 'lib/world_flags/tools/resize_css.rb', line 86

def vendor_assets_path
  "../../../vendor/assets/"
end