Class: Panes

Inherits:
Object show all
Defined in:
lib/muflax/panes.rb

Defined Under Namespace

Classes: Section

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(columns: 2, separator: "|", divider: "=") ⇒ Panes

Returns a new instance of Panes.



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# File 'lib/muflax/panes.rb', line 36

def initialize columns: 2, separator: "|", divider: "="
  # can't be bigger than the terminal
  @width, @height = HighLine::SystemExtensions.terminal_size
  @separator      = separator
  @divider        = divider
  seps            = (columns-1) * separator.size
  @columns        = columns
  @column_width   = @width / columns - seps
  @column_height  = @height
  @sections       = []

  # keep track of drawing positions
  @used_lines   = 0
  @need_divider = false
end

Instance Attribute Details

#column_height ⇒ Object (readonly)

Returns the value of attribute column_height.



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# File 'lib/muflax/panes.rb', line 32

def column_height
  @column_height
end

#column_width ⇒ Object (readonly)

Returns the value of attribute column_width.



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# File 'lib/muflax/panes.rb', line 32

def column_width
  @column_width
end

#columns ⇒ Object (readonly)

Returns the value of attribute columns.



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# File 'lib/muflax/panes.rb', line 31

def columns
  @columns
end

#height ⇒ Object (readonly)

Returns the value of attribute height.



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# File 'lib/muflax/panes.rb', line 31

def height
  @height
end

#remaining_columns ⇒ Object (readonly)

Returns the value of attribute remaining_columns.



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# File 'lib/muflax/panes.rb', line 33

def remaining_columns
  @remaining_columns
end

#remaining_lines ⇒ Object (readonly)

Returns the value of attribute remaining_lines.



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# File 'lib/muflax/panes.rb', line 33

def remaining_lines
  @remaining_lines
end

#sections ⇒ Object (readonly)

Returns the value of attribute sections.



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# File 'lib/muflax/panes.rb', line 34

def sections
  @sections
end

#width ⇒ Object (readonly)

Returns the value of attribute width.



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# File 'lib/muflax/panes.rb', line 31

def width
  @width
end

Instance Method Details

#column_full? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/muflax/panes.rb', line 67

def column_full?              ; remaining_lines_on_column <= 0                                ; end

#last_section ⇒ Object 



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# File 'lib/muflax/panes.rb', line 52

def last_section
  @sections << Section.new if @sections.empty?
  @sections.last
end

#new_column ⇒ Object 



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# File 'lib/muflax/panes.rb', line 69

def new_column
  unless column_full?
    section [""]* remaining_lines_on_column
    last_section.divider = false
    last_section.lines << ""
  end
end

#new_section ⇒ Object 



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# File 'lib/muflax/panes.rb', line 57

def new_section
  @sections << Section.new unless last_section.empty?
  @sections.last
end

#remaining_lines_on_column ⇒ Object 



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# File 'lib/muflax/panes.rb', line 64

def remaining_lines_on_column ; remaining_lines <= 0 ? 0 : (remaining_lines % @column_height) ; end

#section(*lines, max: :all, tail: false, header: false) ⇒ Object 



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# File 'lib/muflax/panes.rb', line 77

def section *lines, max: :all, tail: false, header: false
  lines   = [*lines].flatten
  section = new_section
  left    = remaining_lines_on_column
  rem     = remaining_lines

  num = case max
        when :all             ; lines.size
        when :column          ; left == 0 ? @column_height : left
          # when :full_column ; @column_height
        else                  ; raise "unknown: #{max}"
        end

  num = [num, remaining_lines].min
  @used_lines += num

  case
  when header
    h               = lines.first
    lines           = lines[1..-1]
    div             = h.sub(/^\s+/){|s| @divider*s.size}.sub(/\s+$/){|s| @divider*s.size}
    section.divider = div + @divider * (@column_width - div.str_length)

  when @need_divider
    @used_lines     += 1
    num             -= 1 if max != :all or num >= rem # compensate for the divider
    section.divider = @divider * @column_width
  end

  num           = [num, rem].min
  to_print      = tail ? lines.last(num) : lines.first(num)
  @need_divider = ! column_full?

  # ap(
  #   height:     @height,
  #   total:      total_lines,
  #   rem:        rem,
  #   left:       left,
  #   rem_lines:  remaining_lines,
  #   rem_column: remaining_lines_on_column,
  #   lines:      lines,
  #   num:        num
  #   )

  to_print.each do |line|
    section << line.truncate(@column_width, omission: "⇏")
  end
end

#show! ⇒ Object 



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# File 'lib/muflax/panes.rb', line 126

def show!
  output = []
  @sections.each do |s|
    output << s.divider unless s.divider.nil?
    output += s.lines
  end

  # ap w: @width, h: @height, cw: @column_width, ch: @column_height, c: @columns
  # ap ul: @used_lines, os: output.size
  # ap output

  max_row = @column_height - 1
  max_col = @columns - 1

  clear_screen

  (0..max_row).each do |row|
    (0..max_col).each do |col|
      i   = col * @column_height + row
      out = output[i]&.rstrip || ""
      print out
      print " " * (@column_width - out.str_length)
      print HighLine.color("", :reset)

      if col < max_col    ; print @separator
      elsif row < max_row ; print "\n"
      else                ; # skip
      end
    end
  end
end

#total_lines ⇒ Object 



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# File 'lib/muflax/panes.rb', line 62

def total_lines               ; @height * @columns                                            ; end

#used_columns ⇒ Object 



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# File 'lib/muflax/panes.rb', line 65

def used_columns              ; @used_lines / @height                                         ; end