Class: RubyJard::RowRenderer

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby_jard/row_renderer.rb

Overview

Generate bitmap lines from a row’s data

Constant Summary collapse

ELLIPSIS = 
' »'

Instance Method Summary collapse

Constructor Details

#initialize(row:, width:, height:, color_scheme:) ⇒ RowRenderer

Returns a new instance of RowRenderer.



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# File 'lib/ruby_jard/row_renderer.rb', line 9

def initialize(row:, width:, height:, color_scheme:)
  @row = row
  @width = width
  @height = height
  @color_decorator = RubyJard::Decorators::ColorDecorator.new(color_scheme)
end

Instance Method Details

#draw_content(drawing_content, styles) ⇒ Object

rubocop:enable Metrics/MethodLength



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# File 'lib/ruby_jard/row_renderer.rb', line 86

def draw_content(drawing_content, styles)
  return if @y < 0 || @y >= @height

  @content_map[@y] ||= []
  @content_map[@y][@x] = [styles, drawing_content]
  @x += drawing_content.length
end

#generate_bitmap ⇒ Object 



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# File 'lib/ruby_jard/row_renderer.rb', line 94

def generate_bitmap
  @row.content = []
  @content_map.each do |line|
    line_content = ''
    pending_content = ''

    cell_index = 0
    while cell_index < @width
      cell = line[cell_index]
      if cell.nil? || cell[1].empty?
        pending_content += ' '
        cell_index += 1
      else
        line_content += @color_decorator.decorate(:background, pending_content)
        line_content += @color_decorator.decorate(cell[0], cell[1])
        pending_content = ''
        cell_index += cell[1].length
      end
    end

    line_content += @color_decorator.decorate(:background, pending_content) unless pending_content.empty?
    @row.content << line_content
  end
end

#render ⇒ Object 



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# File 'lib/ruby_jard/row_renderer.rb', line 16

def render
  @row.reset_rendered

  @x = 0
  @y = 0
  @original_x = 0
  @original_y = 0
  @content_map = []

  @row.columns.each do |column|
    @x = @original_x
    @y = @original_y

    @drawing_width = 0
    @drawing_lines = 1

    column.spans.each do |span|
      to_continue = render_span(column, span)
      break unless to_continue
    end

    @original_x += column.width
  end

  generate_bitmap

  @row.mark_rendered
end

#render_span(column, span) ⇒ Object

rubocop:disable Metrics/MethodLength



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# File 'lib/ruby_jard/row_renderer.rb', line 46

def render_span(column, span)
  line_content = span.content

  until line_content.nil? || line_content.empty?
    if column.word_wrap == RubyJard::Column::WORD_WRAP_NORMAL
      if column.content_width - @drawing_width < line_content.length && @drawing_width != 0
        @drawing_width = 0
        @drawing_lines += 1
        @y += 1
        @x = @original_x
      end
    elsif column.word_wrap == RubyJard::Column::WORD_WRAP_BREAK_WORD
      if column.content_width - @drawing_width <= 0
        @drawing_width = 0
        @drawing_lines += 1
        @y += 1
        @x = @original_x
      end
    elsif column.content_width - @drawing_width <= 0
      return false
    end
    drawing_content = line_content[0..column.content_width - @drawing_width - 1]
    line_content = line_content[column.content_width - @drawing_width..-1]
    @drawing_width += drawing_content.length

    if !@row.line_limit.nil? &&
       @drawing_lines >= @row.line_limit &&
       !line_content.nil? &&
       !line_content.empty?
      drawing_content[drawing_content.length - ELLIPSIS.length..-1] = ELLIPSIS
      draw_content(drawing_content, span.styles)
      return false
    else
      draw_content(drawing_content, span.styles)
    end
  end
  true
end