Method: AbstractLayout#_init_layout

Defined in:
lib/canis/core/include/layouts/abstractlayout.rb

#_init_layout ⇒ Object

does some initial common calculations that hopefully should be common across layouters so that do_layout can be ovveridden while calling this.



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# File 'lib/canis/core/include/layouts/abstractlayout.rb', line 114

def _init_layout
  # when user gives a negative value, we recalc and overwrite so the need to save, for a redraw.
  @saved_width ||= @width
  @saved_height ||= @height

  lines = Ncurses.LINES - 1
  columns = Ncurses.COLS - 1
  if @height_pc
    @height = ((lines - @top_margin - @bottom_margin) * @height_pc).floor
  elsif @saved_height <= 0
    @height = lines - @saved_height - @top_margin - @bottom_margin
  end
  $log.debug "  layout height = #{@height} "
  if @width_pc
    @width = ((columns - @left_margin - @right_margin) * width_pc).floor
  elsif @saved_width <= 0
    # if width was -1 we have overwritten it so now we cannot recalc it. it remains the same
    @width = columns - @saved_width - @left_margin - @right_margin
  end
  $log.debug "  layout wid = #{@width} "
  # if user has not specified, then get all the objects
  @components ||= @form.widgets.select do |w| w.visible != false && !@ignore_list.include?(w.class.to_s.downcase); end
  $log.debug "  components #{@components.count} "
end