Class: Charming::UI::BorderPainter

Inherits:
Object
  • Object
show all
Defined in:
lib/charming/presentation/ui/border_painter.rb

Overview

BorderPainter draws a Border's glyphs around content lines, optionally coloring the border. foreground is a single color or a per-side hash ({top:, right:, bottom:, left:}); corners take the top/bottom row's color. background colors border cells; when it merely inherits the box background (background_explicit: false) it only paints alongside a foreground, preserving unstyled borders on unstyled boxes.

Constant Summary collapse

DEFAULT_SIDES = 
%i[top right bottom left].freeze

Instance Method Summary collapse

Constructor Details

#initialize(border:, sides: nil, foreground: nil, background: nil, background_explicit: false) ⇒ BorderPainter

Returns a new instance of BorderPainter.



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# File 'lib/charming/presentation/ui/border_painter.rb', line 14

def initialize(border:, sides: nil, foreground: nil, background: nil, background_explicit: false)
  @border = border
  @sides = Array(sides || DEFAULT_SIDES).map(&:to_sym)
  @foreground = foreground
  @background = background
  @background_explicit = background_explicit
end

Instance Method Details

#paint(lines, inner_width) ⇒ Object 



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# File 'lib/charming/presentation/ui/border_painter.rb', line 22

def paint(lines, inner_width)
  horizontal = @border.horizontal * inner_width
  body = lines.map { |line| border_line(line, inner_width) }

  [top_border(horizontal), *body, bottom_border(horizontal)].compact
end