Module: DXRubyEditor::Core::Renderer

Defined in:
lib/dxruby_editor/core/renderer.rb

Constant Summary collapse

@@font21 = 
Font.new(21)
@@font_ = 
Font.new(14)
@@font10 = 
Font.new(10)
@@editor_main_y = 
20

Class Method Summary collapse

Class Method Details

.draw_cursor(target, context, theme) ⇒ Object 



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# File 'lib/dxruby_editor/core/renderer.rb', line 110

def draw_cursor(target, context, theme)
  _w = @@font21.get_width(context.text[context.cursor_y - 1][0..context.cursor_x - 2])
  _w = 0 if context.cursor_x == 1

  if theme[:cursor].length == 3
    _alpha = Math.sin(context.tick / 20.0).abs * 255
    _color = theme[:cursor].dup
    _color.unshift(_alpha)
  else
    _alpha = Math.sin(context.tick / 20.0).abs * theme[:cursor][0]
    _color = theme[:cursor].dup
    _color[0] = _alpha
  end
  target.draw_box_fill(@editor_main_x + _w, @@editor_main_y + @@font21.size * (context.cursor_y - 1),
                       @editor_main_x + _w + 1, @@editor_main_y + @@font21.size * context.cursor_y,
                       _color)
end

.draw_footer(_target, context, _theme) ⇒ Object 



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# File 'lib/dxruby_editor/core/renderer.rb', line 135

def draw_footer(_target, context, _theme)
  Window.draw_font(Window.width - 300, Window.height - 20,
                   "行 #{context.cursor_y}、列 #{context.cursor_x}", @@font10)
end

.draw_lineno(target, context, theme) ⇒ Object 



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# File 'lib/dxruby_editor/core/renderer.rb', line 22

def draw_lineno(target, context, theme)
  context.text.length.times do |i|
    if i + 1 == context.cursor_y
      _color = theme[:lineno_active]

      # draw line highlight
      target.draw_box_fill(0, @@editor_main_y + @@font21.size * i,
                           target.width, @@editor_main_y + @@font21.size * (i + 1), theme[:line_highlight])
    else
      _color = theme[:lineno]
    end
    target.draw_font(@editor_main_x - 10 - @@font21.get_width((i + 1).to_s),
                     @@editor_main_y + @@font21.size * i, (i + 1).to_s, @@font21, color: _color)
  end
end

.draw_notifications(target, _context, _theme) ⇒ Object 



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# File 'lib/dxruby_editor/core/renderer.rb', line 128

def draw_notifications(target, _context, _theme)
  @notifications.each_with_index do |msg, i|
    # target.draw_box_fill()
    target.draw_font(240, 300 + i * (@@font_.size + 10), msg, @@font_)
  end
end

.draw_text(target, context, theme) ⇒ Object 



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# File 'lib/dxruby_editor/core/renderer.rb', line 38

def draw_text(target, context, theme)
  context.text.each_with_index do |str, i|
    target.draw_font(@editor_main_x, @@editor_main_y + i * @@font21.size, str.chomp, @@font21,
                     color: theme[:font])
  end
end

.draw_text_syntax(target, context, theme) ⇒ Object 



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# File 'lib/dxruby_editor/core/renderer.rb', line 45

def draw_text_syntax(target, context, theme)
  # TODO: シンタックスハイライト機能
  # pp Ripper.lex(context.string) if context.tick % 100 == 0
  _width = 0
  before_line = -1
  str = ''
  context.text.each { |_| str << _ << "\n" }
  Ripper.lex(str).each do |_|
    line = _[0][0]
    column = _[0][1]
    symbol = _[1]
    char = _[2]
    lexer_state = _[3]

    if before_line != line
      _width = 0
      before_line = line
    end

    # Ref https://github.com/ruby/ruby/blob/master/ext/ripper/eventids2.c#L83
    _color =
      case symbol
      when :on_comment # comment
        theme[:syntax_comment] || theme[:font]
      when :on_kw # keyword ( class, def, end ... )
        theme[:syntax_keyword] || theme[:font]
      when :on_op # operator
        theme[:syntax_op] || theme[:font]
      when :on_const # CONSTANT, ClassName
        theme[:syntax_constant] || theme[:font]
      when :on_label, :symbeg # symbol
        theme[:syntax_constant] || theme[:font]
      when :on_int, :on_float # integer
        theme[:syntax_numeric] || theme[:font]
      when :on_ident, :on_ivar, :on_cvar, :on_gvar, :on_backref # variable
        theme[:syntax_variable] || theme[:font]
      when :on_tstring_beg, :on_tstring_text, :on_tstring_end # string
        theme[:syntax_string] || theme[:font]
      when :on_regexp_beg, :on_regexp_end # regex
        theme[:syntax_regex] || theme[:font]
      # when :on_comma # comma
      #   theme[:font]
      # when :on_period # period
      #   theme[:font]
      # when :on_semicolon # semicolon
      #   theme[:font]
      # when :on_lparen, :on_rparen # ()
      #   C_WHITE
      # when :on_lbracket, :on_rbracket # []
      #   C_WHITE
      # when :on_lbrace, :on_rbrace # {}
      #   C_WHITE
      else
        theme[:font]
      end

    target.draw_font(@editor_main_x + _width, @@editor_main_y + (line - 1) * @@font21.size,
                     char.chomp, @@font21, color: _color)
    _width += @@font21.get_width(char)
  end
  # context.text.each_with_index do |c, i|
  #   draw_font_ex(@editor_main_x, @@editor_main_y + i * @@font21.size, c, @@font21)
  # end
end

.update(target, context, theme) ⇒ Object 



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# File 'lib/dxruby_editor/core/renderer.rb', line 4

def update(target, context, theme)
  draw_lineno(target, context, theme)
  # draw_text(target, context, theme)
  draw_text_syntax(target, context, theme)
  draw_cursor(target, context, theme)
  # draw_scrollbar(target, context, theme)
  # draw_notifications(target, context, theme)
  draw_footer(target, context, theme)
end