Class: RenderPDF

Inherits:
Prawn::Document
  • Object
show all
Includes:
ActionView::Helpers::NumberHelper, ApplicationHelper
Defined in:
lib/render_pdf.rb

Direct Known Subclasses

OrderPdf

Constant Summary collapse

TOP_MARGIN = 
36
BOTTOM_MARGIN = 
23
HEADER_SPACE = 
9
3
HEADER_FONT_SIZE = 
16
8
DEFAULT_FONT = 
'OpenSans'

Instance Method Summary collapse

Methods included from ApplicationHelper

#base_errors, #bootstrap_flash_patched, #close_button, #expand, #foodcoop_css_path, #foodcoop_css_tag, #format_currency, #format_date, #format_datetime, #format_datetime_timespec, #format_roles, #format_time, #heading_helper, #icon, #items_per_page, #link_to_gmaps, #link_to_top, #pagination_links_remote, #remote_link_to, #show_title?, #show_user, #show_user_link, #sort_link_helper, #tab_is_active?, #truncate, #weekday

Constructor Details

#initialize(options = {}) ⇒ RenderPDF

Returns a new instance of RenderPDF.


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# File 'lib/render_pdf.rb', line 69

def initialize(options = {})
  options[:font_size] ||= FoodsoftConfig[:pdf_font_size].try(:to_f) || 12
  options[:page_size] ||= FoodsoftConfig[:pdf_page_size] || 'A4'
  options[:skip_page_creation] = true
  @options = options
  @first_page = true

  super(options)

  # Use ttf for better utf-8 compability
  font_families.update(
    'OpenSans' => {
      bold: font_path('OpenSans-Bold.ttf'),
      italic: font_path('OpenSans-Italic.ttf'),
      bold_italic: font_path('OpenSans-BoldItalic.ttf'),
      normal: font_path('OpenSans-Regular.ttf')
    }
  )

  header = options[:title] || title
  footer = I18n.l(Time.now, format: :long)

  header_size = 0
  header_size = height_of(header, size: HEADER_FONT_SIZE, font: DEFAULT_FONT) + HEADER_SPACE if header
  footer_size = height_of(footer, size: FOOTER_FONT_SIZE, font: DEFAULT_FONT) + FOOTER_SPACE

  start_new_page(top_margin: TOP_MARGIN + header_size, bottom_margin: BOTTOM_MARGIN + footer_size)

  font DEFAULT_FONT

  repeat :all, dynamic: true do
    bounding_box [bounds.left, bounds.top + header_size], width: bounds.width, height: header_size do
      text header, size: HEADER_FONT_SIZE, align: :center, overflow: :shrink_to_fit if header
    end
    font_size FOOTER_FONT_SIZE do
      bounding_box [bounds.left, bounds.bottom - FOOTER_SPACE], width: bounds.width, height: footer_size do
        text footer, align: :left, valign: :bottom
      end
      bounding_box [bounds.left, bounds.bottom - FOOTER_SPACE], width: bounds.width, height: footer_size do
        text I18n.t('lib.render_pdf.page', number: page_number, count: page_count), align: :right, valign: :bottom
      end
    end
  end
end

Instance Method Details

#down_or_page(space = 10) ⇒ Object

add pagebreak or vertical whitespace, depending on configuration


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# File 'lib/render_pdf.rb', line 139

def down_or_page(space=10)
  if @first_page
    @first_page = false
    return
  end
  if pdf_add_page_breaks?
    start_new_page
  else
    move_down space
  end
end

#font_path(name) ⇒ Object (protected) 


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# File 'lib/render_pdf.rb', line 170

def font_path(name)
  File.join(Rails.root, 'vendor', 'assets', 'fonts', name)
end

#font_size(points = nil, &block) ⇒ Object 


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# File 'lib/render_pdf.rb', line 133

def font_size(points = nil, &block)
  points *= @options[:font_size] / 12 if points
  super(points, &block)
end

#fontsize(n) ⇒ Object (protected) 


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# File 'lib/render_pdf.rb', line 153

def fontsize(n)
  n
end

#number_to_currency(number, options = {}) ⇒ Object

TODO:

avoid underscore instead of unicode whitespace in pdf :/


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# File 'lib/render_pdf.rb', line 129

def number_to_currency(number, options={})
  super(number, options).gsub("\u202f", ' ') if number
end

#pdf_add_page_breaks?(docid = nil) ⇒ Boolean (protected)

return whether pagebreak or vertical whitespace is used for breaks

Returns:

  • (Boolean) 

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# File 'lib/render_pdf.rb', line 158

def pdf_add_page_breaks?(docid=nil)
  docid ||= self.class.name.underscore
  cfg = FoodsoftConfig[:pdf_add_page_breaks]
  if cfg.is_a? Array
    cfg.index(docid.to_s).any?
  elsif cfg.is_a? Hash
    cfg[docid.to_s]
  else
    cfg
  end
end

#save_tmp ⇒ Object

Helper method to test pdf via rails console: OrderByGroups.new(order).save_tmp


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# File 'lib/render_pdf.rb', line 124

def save_tmp
  File.open("#{Rails.root}/tmp/#{self.class.to_s.underscore}.pdf", 'w') {|f| f.write(to_pdf.force_encoding("UTF-8")) }
end

#title ⇒ Object 


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# File 'lib/render_pdf.rb', line 114

def title
  nil
end

#to_pdf ⇒ Object 


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# File 'lib/render_pdf.rb', line 118

def to_pdf
  body  # Add content, which is defined in subclasses
  render  # Render pdf
end