Class: PDFWalker::Walker::ObjectView

Inherits:
Notebook
  • Object
show all
Defined in:
lib/pdfwalker/textview.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(parent) ⇒ ObjectView

Returns a new instance of ObjectView.



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# File 'lib/pdfwalker/textview.rb', line 35

def initialize(parent)
    @parent = parent
    super()

    @pdfbuffer = TextBuffer.new
    @pdfview = TextView.new(@pdfbuffer).set_editable(false).set_cursor_visible(false).set_left_margin(5)

    @pdfpanel = ScrolledWindow.new.set_policy(POLICY_AUTOMATIC, POLICY_AUTOMATIC)
    @pdfpanel.add_with_viewport @pdfview
    append_page(@pdfpanel, Label.new("PDF Code"))

    @pdfbuffer.create_tag("Default",
        weight: Pango::Weight::BOLD,
        family: "monospace",
        scale: Pango::Scale::LARGE
    )
end

Instance Attribute Details

#parent ⇒ Object (readonly)

Returns the value of attribute parent.



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# File 'lib/pdfwalker/textview.rb', line 32

def parent
  @parent
end

#pdfpanel ⇒ Object (readonly)

Returns the value of attribute pdfpanel.



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# File 'lib/pdfwalker/textview.rb', line 33

def pdfpanel
  @pdfpanel
end

#valuepanel ⇒ Object (readonly)

Returns the value of attribute valuepanel.



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# File 'lib/pdfwalker/textview.rb', line 33

def valuepanel
  @valuepanel
end

Instance Method Details

#clear ⇒ Object 



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# File 'lib/pdfwalker/textview.rb', line 82

def clear
    @pdfbuffer.set_text("")
end

#load(object) ⇒ Object 



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# File 'lib/pdfwalker/textview.rb', line 53

def load(object)
    begin
        self.clear

        case object
        when Origami::PDF::Header, Origami::FDF::Header, Origami::PPKLite::Header
            text = object.to_s
            @pdfbuffer.set_text(text)
            @pdfbuffer.apply_tag("Default", @pdfbuffer.start_iter, @pdfbuffer.end_iter)

        when Origami::Object
            if object.is_a?(Origami::Stream)
                text = [ "#{object.no} #{object.generation} obj", object.dictionary ].join($/)
            else
                text = object.to_s
            end

            text.encode!("UTF-8", replace: '.')
                .tr!("\x00", '.')

            @pdfbuffer.set_text(text)
            @pdfbuffer.apply_tag("Default", @pdfbuffer.start_iter, @pdfbuffer.end_iter)
        end

    rescue
        @parent.error("An error occured while loading this object.\n#{$!} (#{$!.class})")
    end
end