Module: TTY::Box

Defined in:
lib/tty/box.rb,
lib/tty/box/border.rb,
lib/tty/box/version.rb

Defined Under Namespace

Classes: Border

Constant Summary collapse

NEWLINE = 
"\n"
SPACE = 
" "
LINE_BREAK = 
%r{\r\n|\r|\n}.freeze
BOX_CHARS = 
{
  ascii: %w[+ + + + + + + + - | +],
  light: %w[┘ ┐ ┌ └ ┤ ┴ ┬ ├ ─ │ ┼],
  thick: %w[╝ ╗ ╔ ╚ ╣ ╩ ╦ ╠ ═ ║ ╬]
}.freeze
VERSION = 
"0.7.0"

Class Method Summary collapse

Class Method Details

.color(enabled: nil) ⇒ Object 


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# File 'lib/tty/box.rb', line 73

def color(enabled: nil)
  @color ||= Pastel.new(enabled: enabled)
end

.corner_bottom_left_char(border = :light) ⇒ Object 


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# File 'lib/tty/box.rb', line 37

def corner_bottom_left_char(border = :light)
  BOX_CHARS[border][3]
end

.corner_bottom_right_char(border = :light) ⇒ Object 


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# File 'lib/tty/box.rb', line 25

def corner_bottom_right_char(border = :light)
  BOX_CHARS[border][0]
end

.corner_top_left_char(border = :light) ⇒ Object 


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# File 'lib/tty/box.rb', line 33

def corner_top_left_char(border = :light)
  BOX_CHARS[border][2]
end

.corner_top_right_char(border = :light) ⇒ Object 


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# File 'lib/tty/box.rb', line 29

def corner_top_right_char(border = :light)
  BOX_CHARS[border][1]
end

.cross_char(border = :light) ⇒ Object 


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# File 'lib/tty/box.rb', line 65

def cross_char(border = :light)
  BOX_CHARS[border][10]
end

.cursor ⇒ Object 


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# File 'lib/tty/box.rb', line 69

def cursor
  TTY::Cursor
end

.divider_down_char(border = :light) ⇒ Object 


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# File 'lib/tty/box.rb', line 49

def divider_down_char(border = :light)
  BOX_CHARS[border][6]
end

.divider_left_char(border = :light) ⇒ Object 


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# File 'lib/tty/box.rb', line 41

def divider_left_char(border = :light)
  BOX_CHARS[border][4]
end

.divider_right_char(border = :light) ⇒ Object 


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# File 'lib/tty/box.rb', line 53

def divider_right_char(border = :light)
  BOX_CHARS[border][7]
end

.divider_up_char(border = :light) ⇒ Object 


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# File 'lib/tty/box.rb', line 45

def divider_up_char(border = :light)
  BOX_CHARS[border][5]
end

.error(message, **opts) ⇒ Object

A frame for error type message

Parameters:

  • message (String) —

    the message to display


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# File 'lib/tty/box.rb', line 152

def error(message, **opts)
  new_opts = {
    title: { top_left: " ⨯ ERROR " },
    border: { type: :thick },
    padding: 1,
    style: {
      fg: :bright_white,
      bg: :red,
      border: {
        fg: :bright_white,
        bg: :red
      }
    }
  }.merge(opts)
  frame(**new_opts) { message }
end

.frame(*content, top: nil, left: nil, width: nil, height: nil, align: :left, padding: 0, title: {}, border: :light, style: {}, enable_color: nil) ⇒ Object

Create a frame

Parameters:

  • top (Integer) (defaults to: nil) —

    the offset from the terminal top

  • left (Integer) (defaults to: nil) —

    the offset from the terminal left

  • width (Integer) (defaults to: nil) —

    the width of the box

  • height (Integer) (defaults to: nil) —

    the height of the box

  • align (Symbol) (defaults to: :left) —

    the content alignment

  • padding (Integer, Array[Integer]) (defaults to: 0) —

    the padding around content

  • title (Hash) (defaults to: {}) —

    the title for top or bottom border

  • border (Hash, Symbol) (defaults to: :light) —

    the border type

  • style (Hash) (defaults to: {}) —

    the styling for the front and background


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# File 'lib/tty/box.rb', line 191

def frame(*content, top: nil, left: nil, width: nil, height: nil,
          align: :left, padding: 0, title: {}, border: :light, style: {},
          enable_color: nil)
  @color = nil
  color(enabled: enable_color)
  output = []
  sep = NEWLINE
  position = top && left

  border = Border.parse(border)
  top_size    = border.top? ? 1 : 0
  bottom_size = border.bottom? ? 1 : 0
  left_size   = border.left? ? 1 : 0
  right_size  = border.right ? 1 : 0

  str = block_given? ? yield : content_to_str(content)
  sep = str[LINE_BREAK] || NEWLINE # infer line break
  content_lines = str.split(sep)

  # infer dimensions
  dimensions = infer_dimensions(content_lines, padding)
  width ||= left_size + dimensions[0] + right_size
  width = [width,
           top_space_taken(title, border),
           bottom_space_taken(title, border)].max
  height ||= top_size + dimensions[1] + bottom_size

  # apply formatting to content
  formatted_lines = format(content_lines, width, padding, align, sep)

  # infer styling
  fg, bg = *extract_style(style)
  border_fg, border_bg = *extract_style(style[:border] || {})

  if border.top?
    output << cursor.move_to(left, top) if position
    output << top_border(title, width, border, style)
    output << sep unless position
  end

  (height - top_size - bottom_size).times do |i|
    output << cursor.move_to(left, top + i + top_size) if position
    if border.left?
      output << border_bg.(border_fg.(pipe_char(border.type)))
    end

    filler_size = width - left_size - right_size
    if formatted_line = formatted_lines[i]
      output << bg.(fg.(formatted_line))
      line_content_size = Strings::ANSI.sanitize(formatted_line)
                                       .scan(/[[:print:]]/).join.size
      filler_size = [filler_size - line_content_size, 0].max
    end

    if style[:fg] || style[:bg] || !position # something to color
      output << bg.(fg.(SPACE * filler_size))
    end

    if border.right?
      if position
        output << cursor.move_to(left + width - right_size,
                                 top + i + top_size)
      end
      output << border_bg.(border_fg.(pipe_char(border.type)))
    end
    output << sep unless position
  end

  if border.bottom?
    output << cursor.move_to(left, top + height - bottom_size) if position
    output << bottom_border(title, width, border, style)
    output << sep unless position
  end

  output.join
end

.info(message, **opts) ⇒ Object

A frame for info type message

Parameters:

  • message (String) —

    the message to display


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# File 'lib/tty/box.rb', line 83

def info(message, **opts)
  new_opts = {
    title: { top_left: " ℹ INFO " },
    border: { type: :thick },
    padding: 1,
    style: {
      fg: :black,
      bg: :bright_blue,
      border: {
        fg: :black,
        bg: :bright_blue
      }
    }
  }.merge(opts)
  frame(**new_opts) { message }
end

.line_char(border = :light) ⇒ Object 


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# File 'lib/tty/box.rb', line 57

def line_char(border = :light)
  BOX_CHARS[border][8]
end

.pipe_char(border = :light) ⇒ Object 


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# File 'lib/tty/box.rb', line 61

def pipe_char(border = :light)
  BOX_CHARS[border][9]
end

.success(message, **opts) ⇒ Object

A frame for for success type message

Parameters:

  • message (String) —

    the message to display


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# File 'lib/tty/box.rb', line 129

def success(message, **opts)
  new_opts = {
    title: { top_left: " ✔ OK " },
    border: { type: :thick },
    padding: 1,
    style: {
      fg: :black,
      bg: :bright_green,
      border: {
        fg: :black,
        bg: :bright_green
      }
    }
  }.merge(opts)
  frame(**new_opts) { message }
end

.warn(message, **opts) ⇒ Object

A frame for warning type message

Parameters:

  • message (String) —

    the message to display


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# File 'lib/tty/box.rb', line 106

def warn(message, **opts)
  new_opts = {
    title: { top_left: " ⚠ WARNING " },
    border: { type: :thick },
    padding: 1,
    style: {
      fg: :black,
      bg: :bright_yellow,
      border: {
        fg: :black,
        bg: :bright_yellow
      }
    }
  }.merge(opts)
  frame(**new_opts) { message }
end