Class: NSLayoutConstraint

Inherits:
Object show all
Defined in:
lib/sugarcube/to_s/nslayoutconstraint.rb

Constant Summary collapse

Relationships = 
{
  equal: NSLayoutRelationEqual,
  lte: NSLayoutRelationLessThanOrEqual,
  gte: NSLayoutRelationGreaterThanOrEqual,
}
Attributes = 
{
  left: NSLayoutAttributeLeft,
  right: NSLayoutAttributeRight,
  top: NSLayoutAttributeTop,
  bottom: NSLayoutAttributeBottom,
  leading: NSLayoutAttributeLeading,
  trailing: NSLayoutAttributeTrailing,
  width: NSLayoutAttributeWidth,
  height: NSLayoutAttributeHeight,
  center_x: NSLayoutAttributeCenterX,
  center_y: NSLayoutAttributeCenterY,
  baseline: NSLayoutAttributeBaseline,
}

Instance Method Summary collapse

Instance Method Details

#to_s ⇒ Object 



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# File 'lib/sugarcube/to_s/nslayoutconstraint.rb', line 22

def to_s
  target = firstItem
  relative_to = secondItem

  if firstItem and secondItem
    if secondItem == firstItem
      relative_to = :self
    elsif firstItem.superview and secondItem == firstItem.superview
      relative_to = :superview
    elsif secondItem.respond_to?(:stylename) and secondItem.stylename
      relative_to = secondItem.stylename
    end

    if secondItem.superview and firstItem == secondItem.superview
      target = :superview
    elsif firstItem.respond_to?(:stylename) and firstItem.stylename
      target = firstItem.stylename
    end
  elsif firstItem
    if firstItem.respond_to?(:stylename) and firstItem.stylename
      target = firstItem.stylename
    end
  elsif secondItem
    if secondItem.respond_to?(:stylename) and secondItem.stylename
      target = secondItem.stylename
    end
  end

  op = case _to_s_relationship_reverse relation
       when :equal
         '=='
       when :gte
         '>='
       when :lte
         '<='
       end
  formula = 'first.'
  formula << _to_s_attribute_reverse(firstAttribute).to_s
  formula << ' ' << op << ' '
  if multiplier != 1
    formula << multiplier.to_s << ' × '
  end
  if secondItem
    if firstItem == secondItem
      formula << 'first.'
    else
      formula << 'second.'
    end
    formula << _to_s_attribute_reverse(secondAttribute).to_s
  end
  if constant != 0
    if secondItem
      formula << ' + '
    end
    formula << constant.to_s
  end

  return "#<#{self.class}:##{object_id.to_s(16)}" +
         " firstItem=#{target.inspect}" +
         " secondItem=#{relative_to.inspect}" +
         " priority=#{priority.inspect}" +
         " formula=#{formula.inspect}" +
         ">"
end