Class: RSyntaxTree::Element

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(id, parent, content, level, fontset, fontsize, global) ⇒ Element

Returns a new instance of Element.



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# File 'lib/rsyntaxtree/element.rb', line 17

def initialize(id, parent, content, level, fontset, fontsize, global)
  @global = global
  @type = ETYPE_LEAF
  @id = id                 # Unique element id
  @parent = parent         # Parent element id
  @children = []           # Child element ids
  @level = level           # Element level in the tree (0=top etc...)
  @width = 0               # Width of the part of the tree including itself and it governs
  @content_width = 0       # Width of the content
  @horizontal_indent = 0   # Drawing offset
  @vertical_indent = 0     # Drawing offset
  content = content.strip

  @path = if /.+?\^?((?:\+-?>?<?\d+)+)\^?\z/m =~ content
            $1.sub(/\A\+/, "").split("+")
          else
            []
          end

  @fontset = fontset
  @fontsize = fontsize

  parsed = Markup.parse(content)

  if parsed[:status] == :success
    results = parsed[:results]
  else
    error_text = +"Error: input text contains an invalid string"
    error_text += "\n > " + content
    raise RSTError, error_text
  end
  @content = results[:contents]
  @paths = results[:paths]
  @enclosure = results[:enclosure]
  @triangle = results[:triangle]

  @contains_phrase = false
  setup
end

Instance Attribute Details

#children ⇒ Object

Returns the value of attribute children.



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# File 'lib/rsyntaxtree/element.rb', line 15

def children
  @children
end

#contains_phrase ⇒ Object

Returns the value of attribute contains_phrase.



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# File 'lib/rsyntaxtree/element.rb', line 15

def contains_phrase
  @contains_phrase
end

#content ⇒ Object

Returns the value of attribute content.



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# File 'lib/rsyntaxtree/element.rb', line 15

def content
  @content
end

#content_height ⇒ Object

Returns the value of attribute content_height.



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# File 'lib/rsyntaxtree/element.rb', line 15

def content_height
  @content_height
end

#content_width ⇒ Object

Returns the value of attribute content_width.



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# File 'lib/rsyntaxtree/element.rb', line 15

def content_width
  @content_width
end

#enclosure ⇒ Object

Returns the value of attribute enclosure.



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# File 'lib/rsyntaxtree/element.rb', line 15

def enclosure
  @enclosure
end

#font ⇒ Object

Returns the value of attribute font.



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# File 'lib/rsyntaxtree/element.rb', line 15

def font
  @font
end

#fontsize ⇒ Object

Returns the value of attribute fontsize.



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# File 'lib/rsyntaxtree/element.rb', line 15

def fontsize
  @fontsize
end

#height ⇒ Object

Returns the value of attribute height.



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# File 'lib/rsyntaxtree/element.rb', line 15

def height
  @height
end

#horizontal_indent ⇒ Object

Returns the value of attribute horizontal_indent.



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# File 'lib/rsyntaxtree/element.rb', line 15

def horizontal_indent
  @horizontal_indent
end

#id ⇒ Object

Returns the value of attribute id.



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# File 'lib/rsyntaxtree/element.rb', line 15

def id
  @id
end

#level ⇒ Object

Returns the value of attribute level.



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# File 'lib/rsyntaxtree/element.rb', line 15

def level
  @level
end

#parent ⇒ Object

Returns the value of attribute parent.



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# File 'lib/rsyntaxtree/element.rb', line 15

def parent
  @parent
end

#path ⇒ Object

Returns the value of attribute path.



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# File 'lib/rsyntaxtree/element.rb', line 15

def path
  @path
end

#triangle ⇒ Object

Returns the value of attribute triangle.



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# File 'lib/rsyntaxtree/element.rb', line 15

def triangle
  @triangle
end

#type ⇒ Object

Returns the value of attribute type.



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# File 'lib/rsyntaxtree/element.rb', line 15

def type
  @type
end

#vertical_indent ⇒ Object

Returns the value of attribute vertical_indent.



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# File 'lib/rsyntaxtree/element.rb', line 15

def vertical_indent
  @vertical_indent
end

#width ⇒ Object

Returns the value of attribute width.



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# File 'lib/rsyntaxtree/element.rb', line 15

def width
  @width
end

Instance Method Details

#add_child(child_id) ⇒ Object 



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# File 'lib/rsyntaxtree/element.rb', line 158

def add_child(child_id)
  @children << child_id
end

#setup ⇒ Object 



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# File 'lib/rsyntaxtree/element.rb', line 57

def setup
  total_width = 0
  total_height = 0
  one_bvm_given = false
  @content.each do |content|
    content_width = 0
    case content[:type]
    when :border, :bborder
      height = @global[:single_line_height] / 2
      content[:height] = height
      total_height += height
    when :text
      row_width = 0
      elements_height = []
      content[:elements].each do |e|
        text = e[:text]
        e[:text] = text.gsub(" ", WHITESPACE_BLOCK).gsub(">", '&#62;').gsub("<", '&#60;')

        @contains_phrase = true if text.include?(" ")
        decoration = e[:decoration]
        fontsize = decoration.include?(:small) ? @fontsize * SUBSCRIPT_CONST : @fontsize
        fontsize = decoration.include?(:subscript) || decoration.include?(:superscript) ? fontsize * SUBSCRIPT_CONST : fontsize
        style    = decoration.include?(:italic) || decoration.include?(:bolditalic) ? :italic : :normal
        weight   = decoration.include?(:bold) || decoration.include?(:bolditalic) ? :bold : :normal
        font = if decoration.include? :bolditalic
                 @fontset[:bolditalic]
               elsif decoration.include? :bold
                 @fontset[:bold]
               elsif decoration.include? :italic
                 @fontset[:italic]
               else
                 @fontset[:normal]
               end

        standard_metrics = FontMetrics.get_metrics('X', @fontset[:normal], fontsize, :normal, :normal)

        height = standard_metrics.height
        if /\A[<>]+\z/ =~ text
          width = standard_metrics.width * text.size / 2
        elsif text.contains_emoji?
          segments = text.split_by_emoji
          width = 0
          segments.each do |seg|
            ch = if /\s/ =~ seg[:char]
                   't'
                 else
                   seg[:char]
                 end
            this_font = if seg[:type] == :emoji
                          @fontset[:emoji]
                        else
                          font
                        end
            metrics = FontMetrics.get_metrics(ch, this_font, fontsize, style, weight)
            width += metrics.width
          end
        else
          text.gsub!("\\\\", 'i')
          text.gsub!("\\", "")
          text.gsub!(" ", "x")
          text.gsub!("%", "X")
          metrics = FontMetrics.get_metrics(text, font, fontsize, style, weight)
          width = metrics.width
        end

        if e[:decoration].include?(:box) || e[:decoration].include?(:circle) || e[:decoration].include?(:bar)
          e[:content_width] = width
          width += if e[:text].size == 1
                     height - width
                   else
                     @global[:width_half_x]
                   end
        end

        if e[:decoration].include?(:whitespace)
          width = @global[:width_half_x] / 2 * e[:text].size / 4
          e[:text] = ""
        end

        e[:height] = height

        if one_bvm_given
          elements_height << height
        else
          one_bvm_given = true
          elements_height << height + @global[:box_vertical_margin]
        end

        e[:width] = width
        row_width += width
      end

      total_height += elements_height.max
      content_width += row_width
    end
    total_width = content_width if total_width < content_width
  end
  @content_width = total_width
  @content_height = total_height
end