Class: Cosmos::RubyEditor::RubySyntax

Inherits:
Qt::SyntaxHighlighter
  • Object
show all
Defined in:
lib/cosmos/gui/text/ruby_editor.rb

Overview

This works but slows down the GUI significantly when pasting a large (10k line) block of code into the editor

Constant Summary collapse

RUBY_KEYWORDS =

Ruby keywords - www.ruby-doc.org/docs/keywords/1.9/ Also include some common methods that are typically called by themselves like puts, print, sleep

%w(BEGIN END __ENCODING__ __END__ __FILE__ __LINE__ \
alias and begin break case class def defined? do \
else elsif end ensure false for if in module \
next nil not or raise redo rescue retry return \
self super then true undef unless until when while yield \
puts print sleep)
STYLES =

Syntax styles - refer to the ruby.properties in Scite

{
  'normal' => create_format('black'),
  'ruby_keyword' => create_format('darkBlue','bold'),
  'cosmos_keyword' => create_format('blue','bold'),
  'operator' => create_format('red'),
  'brace' => create_format('black','bold'),
  'class' => create_format('blue', 'bold'),
  'method' => create_format(Cosmos::getColor(0, 127, 127), 'bold'),
  'string' => create_format(Cosmos::getColor(127, 0, 127)),
  'symbol' => create_format(Cosmos::getColor(192,160,48)),
  'comment' => create_format('green'),
}
BRACES =

Ruby braces

['\{', '\}', '\(', '\)', '\[', '\]','\|']
RULES = 
[]
RULES_INFO =

Build a QRegExp for each pattern

[]

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.create_format(color = Cosmos::BLACK, style = '') ⇒ Object

common stand alone methods



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# File 'lib/cosmos/gui/text/ruby_editor.rb', line 43

def self.create_format(color = Cosmos::BLACK, style='')
  color = Cosmos::getColor(color)
  brush = Cosmos::getBrush(color)

  format = Qt::TextCharFormat.new
  format.setForeground(brush)
  if style == 'bold'
    format.setFontWeight(Qt::Font::Bold)
  end
  if style == 'italic'
    format.setFontItalic(true)
  end
  format
end

Instance Method Details

#highlightBlock(text) ⇒ Object 



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# File 'lib/cosmos/gui/text/ruby_editor.rb', line 118

def highlightBlock(text)
  # Do other syntax formatting
  RULES_INFO.each do |expression, nth, format|
    index = expression.indexIn(text, 0)
    last_index = index
    last_length = -1
    while index >= 0
      # We actually want the index of the nth match
      index = expression.pos(nth)
      # Bail if the index goes negative because it means
      # we won't have a valid capture
      break if index < 0
      length = expression.cap(nth).length()
      break if length <= 0
      # Break if we're in an endless loop
      break if (last_index == index and last_length == length)
      last_length = length
      last_index = index
      self.setFormat(index, length, format)
      index = expression.indexIn(text, index + length)
    end
  end
end