Class: RSyntaxTree::BaseGraph

Inherits:
Object
  • Object
show all
Defined in:
lib/rsyntaxtree/base_graph.rb

Direct Known Subclasses

SVGGraph

Instance Method Summary collapse

Constructor Details

#initialize(element_list, params, global) ⇒ BaseGraph

Returns a new instance of BaseGraph.



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# File 'lib/rsyntaxtree/base_graph.rb', line 14

def initialize(element_list, params, global)
  @global = global
  @element_list = element_list
  @symmetrize = params[:symmetrize]

  case params[:color]
  # Okabe-Ito Color
  when "modern"
    @col_node = "#0072B2" # blue
    @col_leaf = "#009E73" # bluishgreen
    @col_path = "#CC79A7" # reddishpurple
    @col_extra = "#CC79A7" # orange
    @col_emph = "#D55E00" # vermillion
    # "#000000" black
    # "#56B4E9" skyblue
    # "#F0E442" yellow
    # "#999999" grey
  when "traditional"
    @col_node  = "blue"
    @col_leaf  = "green"
    @col_path = "purple"
    @col_extra = "purple"
    @col_emph = "red"
  else
    @col_node  = "black"
    @col_leaf  = "black"
    @col_path = "black"
    @col_extra = "black"
  end

  @col_bg   = "none"
  @col_fg   = "black"

  @col_line = if params[:hide_default_connectors]
                "none"
              else
                "black"
              end

  @leafstyle = params[:leafstyle]
  @fontset = params[:fontset]
  @fontsize = params[:fontsize]
end

Instance Method Details

#calculate_height(id = 1) ⇒ Object 



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# File 'lib/rsyntaxtree/base_graph.rb', line 94

def calculate_height(id = 1)
  target = @element_list.get_id(id)
  if id == 1
    target.vertical_indent = 0
  else
    parent = @element_list.get_id(target.parent)

    vertical_indent = if !target.triangle &&
                         (@leafstyle == "nothing" || @leafstyle == "none") &&
                         ETYPE_LEAF == target.type && parent.children.size == 1
                        parent.vertical_indent + parent.content_height
                      else
                        parent.vertical_indent + parent.content_height + @global[:height_connector]
                      end
    target.vertical_indent = vertical_indent
  end

  if target.children.empty?
    target.height = target.content_height
    target.vertical_indent + target.content_height
  else
    accum_array = []
    target.children.each do |c|
      accum_array << calculate_height(c)
    end
    target.height = accum_array.max - target.vertical_indent
    accum_array.max
  end
end

#calculate_indent ⇒ Object 



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# File 'lib/rsyntaxtree/base_graph.rb', line 151

def calculate_indent
  node_groups = @element_list.get_elements.group_by(&:parent)
  node_groups.each do |k, v|
    next if k.zero?

    parent = @element_list.get_id(k)
    if @symmetrize
      num_leaves = v.size
      partition_width = parent.width / num_leaves
      left_offset = parent.horizontal_indent + parent.content_width / 2.0 - parent.width / 2.0
      v.each do |e|
        indent = left_offset + (partition_width - e.content_width) / 2.0
        e.horizontal_indent = indent
        left_offset += partition_width
      end
    else
      left_offset = parent.horizontal_indent + parent.content_width / 2.0 - parent.width / 2.0
      v.each do |e|
        indent = left_offset + (e.width - e.content_width) / 2.0
        e.horizontal_indent = indent
        left_offset += e.width
      end
    end
  end
end

#calculate_level ⇒ Object 



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# File 'lib/rsyntaxtree/base_graph.rb', line 58

def calculate_level
  @element_list.get_elements.select { |e| e.type == 2 }.each do |e|
    parent = @element_list.get_id(e.parent)
    e.level = @element_list.get_id(e.parent).level + 1 if parent
  end
end

#calculate_width(id = 1) ⇒ Object 



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# File 'lib/rsyntaxtree/base_graph.rb', line 65

def calculate_width(id = 1)
  target = @element_list.get_id(id)
  if target.children.empty?
    target.width = target.content_width + @global[:h_gap_between_nodes] * 4

    parent = @element_list.get_id(target.parent)
    while parent && parent.children.size == 1
      w = parent.content_width
      target.width = w + @global[:h_gap_between_nodes] * 4 if w > target.content_width
      parent = @element_list.get_id(parent.parent)
    end
    target.width
  else
    return target.width if target.width != 0

    accum_array = []
    target.children.each do |c|
      accum_array << calculate_width(c)
    end
    accum_width = if @symmetrize
                    accum_array.max * target.children.size
                  else
                    accum_array.sum
                  end

    target.width = [accum_width, target.content_width].max
  end
end

#draw_connector(id = 1) ⇒ Object 



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# File 'lib/rsyntaxtree/base_graph.rb', line 183

def draw_connector(id = 1)
  parent = @element_list.get_id(id)
  children = parent.children.map { |c| @element_list.get_id(c) }

  if children.size == 1
    child = children[0]
    case @leafstyle
    when "auto"
      if child.contains_phrase || child.triangle
        triangle_to_parent(parent, child)
      else
        line_to_parent(parent, child)
      end
    when "bar"
      if child.triangle
        triangle_to_parent(parent, child)
      else
        line_to_parent(parent, child)
      end
    when "nothing", "none"
      if child.triangle
        triangle_to_parent(parent, child)
      elsif ETYPE_LEAF != child.type
        line_to_parent(parent, child)
      end
    end
  else
    children.each do |child|
      line_to_parent(parent, child)
    end
  end

  parent.children.each do |c|
    draw_connector(c)
  end
end

#draw_elements ⇒ Object 



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# File 'lib/rsyntaxtree/base_graph.rb', line 177

def draw_elements
  @element_list.get_elements.each do |element|
    draw_element(element)
  end
end

#get_leftmost(id = 1) ⇒ Object 



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# File 'lib/rsyntaxtree/base_graph.rb', line 220

def get_leftmost(id = 1)
  target = @element_list.get_id(id)
  target_indent = target.horizontal_indent
  children_indent = target.children.map { |c| get_leftmost(c) }
  (children_indent << target_indent).min
end

#get_rightmost(id = 1) ⇒ Object 



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# File 'lib/rsyntaxtree/base_graph.rb', line 227

def get_rightmost(id = 1)
  target = @element_list.get_id(id)
  target_right_end = target.horizontal_indent + target.content_width
  children_right_end = target.children.map { |c| get_rightmost(c) }
  (children_right_end << target_right_end).max
end

#make_balance(id = 1) ⇒ Object 



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# File 'lib/rsyntaxtree/base_graph.rb', line 124

def make_balance(id = 1)
  target = @element_list.get_id(id)
  if target.children.empty?
    parent = @element_list.get_id(target.parent)
    accum_array = []
    parent.children.each do |c|
      accum_array << @element_list.get_id(c).width
    end
    max = accum_array.max
    parent.children.each do |c|
      @element_list.get_id(c).width = max
    end
    max
  else
    accum_array = []
    target.children.each do |c|
      accum_array << make_balance(c)
    end
    accum_width = accum_array.max
    max = [accum_width, target.content_width].max
    target.children.each do |c|
      @element_list.get_id(c).width = max
    end
    target.width
  end
end

#node_centering ⇒ Object 



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# File 'lib/rsyntaxtree/base_graph.rb', line 234

def node_centering
  node_groups = @element_list.get_elements.group_by(&:parent)
  node_groups.sort_by { |k, _v| -k }.each do |k, v|
    next if k.zero?

    parent = @element_list.get_id(k)
    child_positions = v.map { |child| child.horizontal_indent + child.content_width / 2 }
    parent.horizontal_indent = child_positions.min + (child_positions.max - child_positions.min - parent.content_width) / 2
  end
end

#parse_list ⇒ Object 



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# File 'lib/rsyntaxtree/base_graph.rb', line 245

def parse_list
  if @element_list.elements.size > 1
    calculate_level
    calculate_width
    make_balance if @symmetrize
    calculate_indent
    node_centering
  end

  top = @element_list.get_id(1)
  diff = top.horizontal_indent
  @element_list.get_elements.each do |e|
    e.horizontal_indent -= diff
  end

  offset_l = (top.horizontal_indent - get_leftmost) + @global[:h_gap_between_nodes]

  @element_list.get_elements.each do |e|
    e.horizontal_indent += offset_l
  end

  calculate_height
  draw_elements
  draw_connector
  draw_paths

  width = get_rightmost - get_leftmost + @global[:h_gap_between_nodes]
  height = @element_list.get_id(1).height
  height = @height if @height > height
  { height: height, width: width }
end