Class: BracketNotation::View::Node

Inherits:
Object
  • Object
show all
Defined in:
lib/bracket_notation/views/node.rb

Direct Known Subclasses

Branch, Leaf

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(tree, content) ⇒ Node

Returns a new instance of Node.



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# File 'lib/bracket_notation/views/node.rb', line 36

def initialize(tree, content)
  @tree = tree
  @content = content
  @parent = nil
  @children = []
  @rect = BracketNotation::Geometry::Rect.new
  @align_to_grid = true
end

Instance Attribute Details

#align_to_grid ⇒ Object

Returns the value of attribute align_to_grid.



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# File 'lib/bracket_notation/views/node.rb', line 34

def align_to_grid
  @align_to_grid
end

#children ⇒ Object

Returns the value of attribute children.



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# File 'lib/bracket_notation/views/node.rb', line 34

def children
  @children
end

#content ⇒ Object

Returns the value of attribute content.



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# File 'lib/bracket_notation/views/node.rb', line 34

def content
  @content
end

#parent ⇒ Object

Returns the value of attribute parent.



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# File 'lib/bracket_notation/views/node.rb', line 34

def parent
  @parent
end

#rect ⇒ Object

Returns the value of attribute rect.



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# File 'lib/bracket_notation/views/node.rb', line 34

def rect
  @rect
end

#tree ⇒ Object

Returns the value of attribute tree.



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# File 'lib/bracket_notation/views/node.rb', line 34

def tree
  @tree
end

Instance Method Details

#ancestors ⇒ Object

Return the list of nodes leading from the current node to the tree root, starting with the current node’s parent.



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# File 'lib/bracket_notation/views/node.rb', line 84

def ancestors
  node_list = []
  next_up = self
  node_list << next_up while next_up = next_up.parent
  
  return node_list
end

#corner_bottom_left ⇒ Object

Return the coordinates of the node’s bottom left corner.



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# File 'lib/bracket_notation/views/node.rb', line 127

def corner_bottom_left
  BracketNotation::Geometry::Point.new(@rect.origin.x, @rect.origin.y + @rect.size.height)
end

#corner_bottom_right ⇒ Object

Return the coordinates of the node’s bottom right corner.



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# File 'lib/bracket_notation/views/node.rb', line 122

def corner_bottom_right
  BracketNotation::Geometry::Point.new(@rect.origin.x + @rect.size.width, @rect.origin.y + @rect.size.height)
end

#corner_top_left ⇒ Object

Return the coordinates of the node’s top left corner.



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# File 'lib/bracket_notation/views/node.rb', line 112

def corner_top_left
  @rect.origin
end

#corner_top_right ⇒ Object

Return the coordinates of the node’s top right corner.



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# File 'lib/bracket_notation/views/node.rb', line 117

def corner_top_right
  BracketNotation::Geometry::Point.new(@rect.origin.x + @rect.size.width, @rect.origin.y)
end

#left_sibling ⇒ Object

Return the node’s left sibling, or nil if the node is the leftmost child of its parent.



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# File 'lib/bracket_notation/views/node.rb', line 61

def left_sibling
  return nil if @parent.nil?
  
  left_sibling = nil
  self_index = @parent.children.index(self)
  left_sibling = @parent.children[self_index - 1] if self_index > 0
  
  return left_sibling
end

#right_sibling ⇒ Object

Return the node’s right sibling, or nil if the node is the rightmost child of its parent.



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# File 'lib/bracket_notation/views/node.rb', line 73

def right_sibling
  return nil if @parent.nil?
  
  self_index = @parent.children.index(self)
  right_sibling = @parent.children[self_index + 1]
  
  return right_sibling
end

#side_middle_bottom ⇒ Object

Return the coordinates of the middle of the node’s bottom side.



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# File 'lib/bracket_notation/views/node.rb', line 142

def side_middle_bottom
  BracketNotation::Geometry::Point.new(@rect.origin.x + (@rect.size.width / 2), @rect.origin.y + @rect.size.height)
end

#side_middle_left ⇒ Object

Return the coordinates of the middle of the node’s left side.



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# File 'lib/bracket_notation/views/node.rb', line 147

def side_middle_left
  BracketNotation::Geometry::Point.new(@rect.origin.x, @rect.origin.y + (@rect.size.height / 2))
end

#side_middle_right ⇒ Object

Return the coordinates of the middle of the node’s right side.



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# File 'lib/bracket_notation/views/node.rb', line 137

def side_middle_right
  BracketNotation::Geometry::Point.new(@rect.origin.x + @rect.size.width, @rect.origin.y + (@rect.size.height / 2))
end

#side_middle_top ⇒ Object

Return the coordinates of the middle of the node’s top side.



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# File 'lib/bracket_notation/views/node.rb', line 132

def side_middle_top
  BracketNotation::Geometry::Point.new(@rect.origin.x + (@rect.size.width / 2), @rect.origin.y)
end

#subtree_size ⇒ Object

Return the dimensions of the rect that contains the nod and all of its descendants



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# File 'lib/bracket_notation/views/node.rb', line 94

def subtree_size
  return @rect.size if kind_of? Leaf or @children.count == 0
  
  new_subtree_size = BracketNotation::Geometry::Size.new(0, @rect.size.height)
  subtree_widths = []
  subtree_heights = []
  
  @children.each do |child|
    child_subtree_size = child.subtree_size
    new_subtree_size = new_subtree_size.size_by_adding_to_width(child_subtree_size.width)
    subtree_heights << child_subtree_size.height
  end
  
  new_subtree_size = new_subtree_size.size_by_adding_to_width_and_height(@tree.node_h_margin * (children.count - 1), @tree.node_v_margin + subtree_heights.sort.last)
  return BracketNotation::Geometry::Size.new(@rect.size.width > new_subtree_size.width ? @rect.size.width : new_subtree_size.width, new_subtree_size.height)
end