Class: Preflight::Rules::BoxNesting

Inherits:
Object
  • Object
show all
Defined in:
lib/preflight/rules/box_nesting.rb

Overview

For each page MediaBox must be the biggest box, followed by the BleedBox or ArtBox, followed by the TrimBox.

Boxes may be omitted, but if they’re provided they must be correctly nested.

Arguments: none

Usage:

class MyPreflight
  include Preflight::Profile

  rule Preflight::Rules::BoxNesting
end

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#issues ⇒ Object (readonly)

Returns the value of attribute issues.



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# File 'lib/preflight/rules/box_nesting.rb', line 23

def issues
  @issues
end

Instance Method Details

#page=(page) ⇒ Object 



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# File 'lib/preflight/rules/box_nesting.rb', line 25

def page=(page)
  media  = page.attributes[:MediaBox]
  bleed  = page.attributes[:BleedBox]
  trim   = page.attributes[:TrimBox]
  art    = page.attributes[:ArtBox]

  if media && bleed && (bleed[2] > media[2] || bleed[3] > media[3])
    @issues = [Issue.new("BleedBox must be smaller than MediaBox", self, :page      => page.number,
                                                                         :large_box => "BleedBox",
                                                                         :small_box => "MediaBox")]
  elsif trim && bleed && (trim[2] > bleed[2] || trim[3] > bleed[3])
    @issues = [Issue.new("TrimBox must be smaller than BleedBox", self, :page      => page.number,
                                                                        :large_box => "TrimBox",
                                                                        :small_box => "BleedBox")]
  elsif art && bleed && (art[2] > bleed[2] || art[3] > bleed[3])
    @issues = [Issue.new("ArtBox must be smaller than BleedBox", self, :page       => page.number,
                                                                       :large_box => "ArtBox",
                                                                       :small_box => "BleedBox")]
  elsif trim && media && (trim[2] > media[2] || trim[3] > media[3])
    @issues = [Issue.new("TrimBox must be smaller than MediaBox", self, :page      => page.number,
                                                                        :large_box => "TrimBox",
                                                                        :small_box => "MediaBox")]
  elsif art && media && (art[2] > media[2] || art[3] > media[3])
    @issues = [Issue.new("ArtBox must be smaller than MediaBox", self, :page      => page.number,
                                                                       :large_box => "ArtBox",
                                                                       :small_box => "MediaBox")]
  else
    @issues = []
  end
end