Class: RubyJard::BoxDrawer

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

Overview

Drawer to draw a nice single-line box that maximize screen area

Each screen has 4 corners and clock-wise corresponding ID:

  • Top-left => 1

  • Top-right => 2

  • Bottom-right => 3

  • Bottom-left => 4

For each screen, add each point to a coordinator hash.

  • If a point is occupied by 1 screen, draw normal box corner symbol.

  • If a point is occupied by 2 screens, look up in a map, and draw corresponding intersection corner symbol.

  • If a point is occupied by 3 or more screens, it’s definitely a + symbol.

The corner list at each point (x, y) is unique. If 2 screens overlap a point with same corner ID, it means 2 screens overlap, and have same corner symbol.

Constant Summary collapse

CORNERS = 
[
  TOP_LEFT = 1,
  TOP_RIGHT = 2,
  BOTTOM_RIGHT = 3,
  BOTTOM_LEFT = 4
].freeze
HORIZONTAL_LINE = 
'─'
VERTICAL_LINE = 
'│'
CROSS_CORNER = 
'┼'
NORMALS_CORNERS = 
{
  TOP_LEFT => '┌',
  TOP_RIGHT => '┐',
  BOTTOM_RIGHT => '┘',
  BOTTOM_LEFT => '└'
}.freeze
OVERLAPPED_CORNERS = 
{
  [TOP_LEFT, TOP_RIGHT] => '┬',
  [TOP_LEFT, BOTTOM_RIGHT] => '┼',
  [TOP_LEFT, BOTTOM_LEFT] => '├',
  [TOP_RIGHT, BOTTOM_RIGHT] => '┤',
  [TOP_RIGHT, BOTTOM_LEFT] => '┼',
  [BOTTOM_RIGHT, BOTTOM_LEFT] => '┴'
}.freeze

Instance Method Summary collapse

Constructor Details

#initialize(output:, screens:, color_scheme:) ⇒ BoxDrawer

Returns a new instance of BoxDrawer.



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# File 'lib/ruby_jard/box_drawer.rb', line 48

def initialize(output:, screens:, color_scheme:)
  @output = output
  @screens = screens
  @color_decorator = RubyJard::Decorators::ColorDecorator.new(color_scheme)
end

Instance Method Details

#draw ⇒ Object 



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# File 'lib/ruby_jard/box_drawer.rb', line 54

def draw
  draw_basic_lines
  corners = calculate_corners
  draw_corners(corners)
  draw_titles
end