102 lines
3.2 KiB
Ruby
102 lines
3.2 KiB
Ruby
# coding: utf-8
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# typed: strict
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# frozen_string_literal: true
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module PDF
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class Reader
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# mixin for common methods in Page and FormXobjects
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#
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class Resources
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def initialize(objects, resources)
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@objects = objects
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@resources = resources
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end
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# Returns a Hash of color spaces that are available to this page
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#
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# NOTE: this method de-serialise objects from the underlying PDF
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# with no caching. You will want to cache the results instead
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# of calling it over and over.
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#
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def color_spaces
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@objects.deref_hash!(@resources[:ColorSpace]) || {}
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end
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# Returns a Hash of fonts that are available to this page
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#
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# NOTE: this method de-serialise objects from the underlying PDF
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# with no caching. You will want to cache the results instead
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# of calling it over and over.
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#
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def fonts
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@objects.deref_hash!(@resources[:Font]) || {}
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end
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# Returns a Hash of external graphic states that are available to this
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# page
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#
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# NOTE: this method de-serialise objects from the underlying PDF
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# with no caching. You will want to cache the results instead
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# of calling it over and over.
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#
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def graphic_states
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@objects.deref_hash!(@resources[:ExtGState]) || {}
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end
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# Returns a Hash of patterns that are available to this page
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#
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# NOTE: this method de-serialise objects from the underlying PDF
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# with no caching. You will want to cache the results instead
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# of calling it over and over.
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#
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def patterns
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@objects.deref_hash!(@resources[:Pattern]) || {}
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end
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# Returns an Array of procedure sets that are available to this page
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#
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# NOTE: this method de-serialise objects from the underlying PDF
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# with no caching. You will want to cache the results instead
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# of calling it over and over.
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#
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def procedure_sets
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@objects.deref_array!(@resources[:ProcSet]) || []
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end
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# Returns a Hash of properties sets that are available to this page
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#
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# NOTE: this method de-serialise objects from the underlying PDF
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# with no caching. You will want to cache the results instead
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# of calling it over and over.
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#
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def properties
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@objects.deref_hash!(@resources[:Properties]) || {}
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end
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# Returns a Hash of shadings that are available to this page
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#
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# NOTE: this method de-serialise objects from the underlying PDF
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# with no caching. You will want to cache the results instead
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# of calling it over and over.
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#
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def shadings
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@objects.deref_hash!(@resources[:Shading]) || {}
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end
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# Returns a Hash of XObjects that are available to this page
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#
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# NOTE: this method de-serialise objects from the underlying PDF
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# with no caching. You will want to cache the results instead
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# of calling it over and over.
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#
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def xobjects
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dict = @objects.deref_hash!(@resources[:XObject]) || {}
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TypeCheck.cast_to_pdf_dict_with_stream_values!(dict)
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end
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end
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end
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end
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