Class: DragonflyPhantomjs::Processors::Rasterize

Inherits:
Object
  • Object
show all
Defined in:
lib/dragonfly_phantomjs/processors/rasterize.rb

Overview

This processor uses PhantomJs to convert .html or .svg documents to .gif, .jpeg, .pdf or .png

Incase of .svg file, the viewport_size is automatically set to the dimensions in the .svg file, unless explicitly specified in options

IMPORTANT: Requires phantomjs (~> 1.9)

Defined Under Namespace

Classes: UnsupportedFormat

Instance Method Summary collapse

Instance Method Details

#call(content, format = :pdf, options = {}) ⇒ Object

:margin - string, defaults to 0, supported units are ‘mm’, ‘cm’, ‘in’, ‘px’ :format - string, defaults to ‘A4’, supported formats are ‘A4’, ‘A3’, ‘A5’, ‘Legal’, ‘Letter’, ‘Tabloid’ :paper_size - string, ‘width*height’, ‘300mm*300mm’, supported units are ‘mm’, ‘cm’, ‘in’, ‘px’ :viewport_size - string, ‘width*height’, ‘1440*900’ :zoom_factor - number, defaults to 1 :header - hash, {height: ‘10mm’, contents: ‘foo’, hide_on: [1] } :footer - hash, {height: ‘10mm’, contents: ‘foo’, hide_on: [1] }

Raises:



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# File 'lib/dragonfly_phantomjs/processors/rasterize.rb', line 28

def call content, format=:pdf, options={}
  raise UnsupportedFormat unless %w(gif jpeg pdf png).include?(format.to_s)
  content.shell_update(ext: format) do |old_path, new_path|
    if File.extname(old_path) == 'svg' && options[:viewport_size].blank?
      width = Dragonfly::Analysers::SvgAnalyser.new(content)[:width]
      height = Dragonfly::Analysers::SvgAnalyser.new.(content)[:height]
      options[:viewport_size] = "#{width.to_i}*#{height.to_i}"
    end
    "#{phantomjs_command} #{rasterize_script} #{old_path} #{new_path} '#{options.to_json}'"
  end
end

#update_url(attrs, format, args = "") ⇒ Object 



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# File 'lib/dragonfly_phantomjs/processors/rasterize.rb', line 40

def update_url attrs, format, args=""
  attrs.ext = format.to_s
end