a4纸标签自定义打印排版

class PrintBase
  # 默认现在只有a4纸大小
  PaperType = {1=>[210,297]}
  # 标签尺寸
  TagType = {0=>[100,40],1=>[60,40],2=>[150,60]}

  attr_accessor :id,:tag_type_x,:tag_type_y,:print_size,:print_x_size,:print_y_size,:print_page

  def initialize(tag_type=0, obj_size=nil , paper_type=1)
    @paper_type_x = PaperType[paper_type][0]
    @paper_type_y = PaperType[paper_type][1]
    @tag_type_x = TagType[tag_type][0]
    @tag_type_y = TagType[tag_type][1]
    @id = tag_type

    # 纸张可用面积
    @paper_type_area = @paper_type_x * @paper_type_y 
    # 标签面积
    @tag_type_area = @tag_type_x * @tag_type_y
    # 每行打印张数
    @print_x_size = @paper_type_x / @tag_type_x
    # 每列打印张数
    @print_y_size = @paper_type_y / @tag_type_y

    # 每页纸打印标签张数
    @print_size = @paper_type_area / @tag_type_area
    @print_size = @print_x_size * @print_y_size < @print_size ? @print_x_size * 
    @print_y_size : @print_size
    # 需打印纸张数
    @print_page = obj_size ? ( obj_size / @print_size + (obj_size % @print_size == 0 ? 0 : 1) ) : 1
  end

end    

class Admin::Print::WhmallTagsController <  Admin::BaseController
    layout:false
	def print
      @tag = PrintBase.new(params[:tag_id].to_i)
      @chemical = ::Chemical.find(params[:chemical_id]|| 25)
	end
end

[align=center]

   

     

       <% ([email protected]_size).each do |i|%>
          <%if i == 1 %>
            
            
 
            
 
               
<%= image_tag "4-10cm.jpg", style: 'width: 100%;height: 100%; ' %>[/align]
               
<%= image_tag "https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1494828228049&di=7219b7547575eadb65d32b7ba61af822&imgtype=0&src=http%3A%2F%2Fico.ooopic.com%2Ficonset02%2F6%2Fgif%2F53757.gif", style: 'width: 100%;height: 100%; ' %>
            
 
          <% elsif i  == @tag.print_size %>
            
            

              <%= render :partial => "print" , :locals => { :i => i }%> 
              
<%= image_tag "https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1494828228049&di=7219b7547575eadb65d32b7ba61af822&imgtype=0&src=http%3A%2F%2Fico.ooopic.com%2Ficonset02%2F6%2Fgif%2F53757.gif", style: 'width: 100%;height: 100%; ' %>
            
   
          <% elsif i % @tag.print_x_size == 0 %>
            
            

             
<%= image_tag "4-10cm.jpg", style: 'width: 100%;height: 100%; ' %>
               
<%= image_tag "https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1494828228049&di=7219b7547575eadb65d32b7ba61af822&imgtype=0&src=http%3A%2F%2Fico.ooopic.com%2Ficonset02%2F6%2Fgif%2F53757.gif", style: 'width: 100%;height: 100%; ' %>
            
 
            
 
            
 
 
          <% else %>
            

              
<%= image_tag "4-10cm.jpg", style: 'width: 100%;height: 100%; ' %>
               
<%= image_tag "https://timgsa.baidu.com/timg?image&quality=80&size=b9999_10000&sec=1494828228049&di=7219b7547575eadb65d32b7ba61af822&imgtype=0&src=http%3A%2F%2Fico.ooopic.com%2Ficonset02%2F6%2Fgif%2F53757.gif", style: 'width: 100%;height: 100%; ' %>
            
         
          <% end %>
       <% end %>