Class: Styles

Inherits:
Object show all
Defined in:
lib/xiki/styles.rb

Class Method Summary collapse

Class Method Details

.apply(pattern, *styles) ⇒ Object 



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# File 'lib/xiki/styles.rb', line 152

def self.apply(pattern, *styles)
  # Make back-slashes double
  pattern.gsub!("\\", '\\\\\\\\')
  code = "(font-lock-add-keywords nil '(( \"#{pattern}\"\n"
  styles.each_with_index do |f, i|
    code << "  (#{i} '#{f.to_s.gsub("_", "-")})\n" if f
  end
  code << "  )))"
  $el.el4r_lisp_eval code
  $el.font_lock_mode 1
  nil
end

.attribute(style, attribute) ⇒ Object

Styles.attribute “mode-line”, “background” Styles.attribute “mode-line”, “box”



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# File 'lib/xiki/styles.rb', line 198

def self.attribute style, attribute
  $el.el4r_lisp_eval "(face-attribute '#{style} :#{attribute})"
end

.clear ⇒ Object

Don’t format quotes (it can override other styles)



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# File 'lib/xiki/styles.rb', line 186

def self.clear
  $el.el4r_lisp_eval "(setq font-lock-defaults '(nil t))"
end

.dark_bg? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/xiki/styles.rb', line 97

def self.dark_bg?
  Styles.attribute(:default, :background)[1..1][/[0-7]/]
end

.define(name, options) ⇒ Object 



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# File 'lib/xiki/styles.rb', line 113

def self.define name, options

  return if ! $el

  self.exand_colors options, [:bg, :fg]

  code = "(set-face-attribute (make-face '#{name.to_s.gsub("_", "-")}) nil\n"
  code << "  :background \"##{options[:bg]}\"\n" if options[:bg]
  code << "  :foreground \"##{options[:fg]}\"\n" if options[:fg]
  code << "  :family \"#{options[:face]}\"\n" if options[:face]

  if options[:size]
    size = options[:size]
    size = self.size(size.to_i) if size.is_a? String   # If a string, convert to relative size
    code << "  :height #{size}\n"
  end

  code += options[:strike] ? "  :strike-through t\n" : "  :strike-through nil\n" if options.has_key?(:strike)

  code += options[:underline] ? "  :underline t\n" : "  :underline nil\n" if options.has_key?(:underline)
  code += options[:overline] ? "  :overline t\n" : "  :overline nil\n" if options.has_key?(:overline)

  code += options[:bold] ? "  :weight 'bold\n" : "  :weight 'normal\n" if options.has_key?(:bold)
  if options[:border]
    border = options[:border]
    code <<
      if border.class == Symbol
        ":box nil\n"
      elsif border.class == String
        ":box '(:line-width 1 :color \"##{border}\")\n"
      elsif border.class == Array
        ":box '(:line-width #{border[1]} :color \"##{border[0]}\" :style #{border[2] || 'nil'})\n"
      end
  end
  code << "  )"

  $el.el4r_lisp_eval code
end

.exand_colors(options, keys) ⇒ Object 



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# File 'lib/xiki/styles.rb', line 101

def self.exand_colors options, keys
  keys.each do |key|
    next if ! options[key]
    options[key].sub! /^#/, ''
    options[key].sub! /^(.)(.)(.)$/, "\\1\\1\\2\\2\\3\\3"
  end
end

.font_size(size = nil) ⇒ Object 



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# File 'lib/xiki/styles.rb', line 44

def self.font_size size=nil

  # If nothing passed, show default sizes

  if ! size
    return "
      - original) #{Styles.height}
      - 110
      - 120
      - 135
      - 160
      - 200
      - 250
      "
  end

  Styles.define :default, :size=>size.to_i

  # To resize mode lines
  Notes.define_styles
  FileTree.define_styles

  nil
end

.height ⇒ Object 



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# File 'lib/xiki/styles.rb', line 190

def self.height
  $el.el4r_lisp_eval "(face-attribute 'default :height)"
end

.init ⇒ Object 



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# File 'lib/xiki/styles.rb', line 165

def self.init
  return if ! $el

  # Make 'arial black' work in Linux
  $el.el4r_lisp_eval %`
    (custom-set-variables
      '(face-font-family-alternatives '(
        ("arial black" "arial" "DejaVu Sans")
        ("arial" "DejaVu Sans")
        ("verdana" "DejaVu Sans")
        ;("verdana" "arial")
        ))
      '(global-font-lock-mode t nil (font-lock))
      ;'(font-lock-defaults '(nil t))  ; messes up Open List Faces
      '(show-trailing-whitespace t)
      '(font-lock-keywords-case-fold-search t)
      )
    `
end

.list_faces ⇒ Object 



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# File 'lib/xiki/styles.rb', line 88

def self.list_faces
  $el.with(:save_window_excursion) do
    $el.list_faces_display
  end
  View.to_buffer "*Faces*"

  nil
end

.menu ⇒ Object 



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# File 'lib/xiki/styles.rb', line 3

def self.menu

  '
  - .font size/
  - .list faces/
  - api/
    > Summary
    | How to use the Styles class.  You can change the color and font of text.
    | You define styles, then make them apply to the text that matches
    | regular expression.
    |
    > Define
    | Styles.define :red, :bg => "d77"
    |
    > Apply
    | Styles.apply "apply", :red
    |
    > Define more complex font
    | Styles.define :blueish,
    |   :fg => "99e",
    |   :face => "verdana",
    |   :size => 90,
    |   :bold => true
    |
    > See
    | For styling specific text (not just a pattern):
    <<< @overlay/
  - see/
    <<< @css/list/
    <<< @themes/
  '
  #       > Apply multiple fonts and groups

end

.method_missing(*args) ⇒ Object 



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# File 'lib/xiki/styles.rb', line 109

def self.method_missing *args
  self.define *args
end

.reload_styles ⇒ Object 



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# File 'lib/xiki/styles.rb', line 38

def self.reload_styles
  Notes.define_styles
  FileTree.define_styles
  Color.define_styles
end

.size(relative = 0) ⇒ Object 



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# File 'lib/xiki/styles.rb', line 202

def self.size relative=0
  # Cache so subsequent calls don't have to look up from elisp
  size = $el.el4r_lisp_eval "(face-attribute 'default :height)"
  size ||= 90
  size + relative * 5
end

.toggle ⇒ Object 



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# File 'lib/xiki/styles.rb', line 80

def self.toggle
  $el.elvar.font_lock_mode ?
    $el.font_lock_mode(0) :   # plain text
    $el.font_lock_mode(true)   # stylized text

  nil
end

.zoom(options = {}) ⇒ Object 



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# File 'lib/xiki/styles.rb', line 69

def self.zoom options={}

  increment = options[:out] ? -10 : 10
  increment *= 10 if Keys.prefix_u

  height = self.height
  height += increment
  self.font_size height
end