Specifies how the image within a viewport should be scaled.
align
a combination of 'xMin', 'xMid', or 'xMax', followed by 'YMin', 'YMid', or 'YMax'
meet_or_slice
one of 'meet' or 'slice'
# File lib/rvg/stretchable.rb, line 16 def preserve_aspect_ratio(align, meet_or_slice='meet') @align = align.to_s if @align != 'none' m = /\A(xMin|xMid|xMax)(YMin|YMid|YMax)\z/.match(@align) fail(ArgumentError, "unknown alignment specifier: #{@align}") unless m end if meet_or_slice meet_or_slice = meet_or_slice.to_s.downcase if meet_or_slice == 'meet' || meet_or_slice == 'slice' @meet_or_slice = meet_or_slice else fail(ArgumentError, "specifier must be `meet' or `slice' (got #{meet_or_slice})") end end yield(self) if block_given? self end