Class: Preflight::Rules::MinPpi
- Inherits:
-
Object
- Object
- Preflight::Rules::MinPpi
- Extended by:
- Forwardable
- Includes:
- Measurements
- Defined in:
- lib/preflight/rules/min_ppi.rb
Overview
Instance Attribute Summary collapse
-
#issues ⇒ Object
readonly
Returns the value of attribute issues.
Instance Method Summary collapse
-
#initialize(min_ppi) ⇒ MinPpi
constructor
A new instance of MinPpi.
-
#invoke_xobject(label) ⇒ Object
As each image is drawn on the canvas, determine the amount of device space it’s being crammed into and therefore the PPI.
-
#page=(page) ⇒ Object
we’re about to start a new page, reset state.
Constructor Details
#initialize(min_ppi) ⇒ MinPpi
Returns a new instance of MinPpi.
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# File 'lib/preflight/rules/min_ppi.rb', line 34 def initialize(min_ppi) @min_ppi = min_ppi.to_i end |
Instance Attribute Details
#issues ⇒ Object (readonly)
Returns the value of attribute issues.
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# File 'lib/preflight/rules/min_ppi.rb', line 26 def issues @issues end |
Instance Method Details
#invoke_xobject(label) ⇒ Object
As each image is drawn on the canvas, determine the amount of device space it’s being crammed into and therefore the PPI.
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# File 'lib/preflight/rules/min_ppi.rb', line 49 def invoke_xobject(label) @state.invoke_xobject(label) do |xobj| case xobj when PDF::Reader::FormXObject then xobj.walk(self) when PDF::Reader::Stream invoke_image_xobject(xobj) if xobj.hash[:Subtype] == :Image end end end |
#page=(page) ⇒ Object
we’re about to start a new page, reset state
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# File 'lib/preflight/rules/min_ppi.rb', line 40 def page=(page) @page = page @state = PDF::Reader::PageState.new(page) @issues = [] end |