examples/multi_page_layout.rb @@ -20,6 +20,7 @@ module Prawn include PageGeometry attr_accessor :page_size, :page_layout, :y, :margin_box + attr_reader :margins # Creates and renders a PDF document. @@ -78,29 +79,38 @@ module Prawn @page_size = options[:page_size] || "LETTER" @page_layout = options[:page_layout] || :portrait - ml = options[:left_margin] || 36 - mr = options[:right_margin] || 36 - mt = options[:top_margin] || 36 - mb = options[:bottom_margin] || 36 + @margins = { :left => options[:left_margin] || 36, + :right => options[:right_margin] || 36, + :top => options[:top_margin] || 36, + :bottom => options[:bottom_margin] || 36 } - @margin_box = BoundingBox.new( - self, - [ ml, page_dimensions[-1] - mt ] , - :width => page_dimensions[-2] - (ml + mr), - :height => page_dimensions[-1] - (mt + mb) - ) + generate_margin_box @bounding_box = @margin_box start_new_page - end + end + + def generate_margin_box + old_margin_box = @margin_box + @margin_box = BoundingBox.new( + self, + [ @margins[:left], page_dimensions[-1] - @margins[:top] ] , + :width => page_dimensions[-2] - (@margins[:left] + @margins[:right]), + :height => page_dimensions[-1] - (@margins[:top] + @margins[:bottom]) + ) + + # update bounding box if not flowing from the previous page + @bounding_box = @margin_box if old_margin_box == @bounding_box + end # Creates and advances to a new page in the document. # Runs the <tt>:on_page_start</tt> lambda if one was provided at # document creation time (See Document.new). # def start_new_page - finish_page_content if @page_content + finish_page_content if @page_content + generate_margin_box @page_content = ref(:Length => 0) @current_page = ref(:Type => :Page, lib/prawn/document.rb 10a88748e633e236f20928517cedee7c4c23b0d1 Gregory Brown gregory.t.brown@gmail.com http://github.com/sandal/prawn/commit/cca72f343055c1e514159006aaf6a5c485e53692 cca72f343055c1e514159006aaf6a5c485e53692 2008-07-02T14:32:25-07:00 2008-07-02T14:32:25-07:00 Low level support for multiple page layouts / sizes. Ineffecient, and needing tests, and probably needs a higher level interface d393d5abda80bf5f1d8ab03647b88182bb5e801d Gregory Brown gregory.t.brown@gmail.com