Class: Bread::Basket::Poster::HeaderCallback

Inherits:
Object
  • Object
show all
Defined in:
lib/bread/basket/poster/header_callback.rb

Instance Method Summary collapse

Constructor Details

#initialize(document, options) ⇒ HeaderCallback

Returns a new instance of HeaderCallback.



5
6
7
8
9
10
11
 
# File 'lib/bread/basket/poster/header_callback.rb', line 5

def initialize(document, options)
  @color = options['background-color']
  @document = document
  @radius = options['radius']
  @height = options['height']
  @width = options['width']
end

Instance Method Details

#render_behind(fragment) ⇒ Object 



13
14
15
16
17
18
19
20
21
22
23
24
25
 
# File 'lib/bread/basket/poster/header_callback.rb', line 13

def render_behind(fragment)
  original_color = @document.fill_color
  vert_dist = (@height - fragment.height) / 2

  # TODO: If you want to get real picky, the vertical centering should
  # be aware of whether the text has ascenders or descenders, there's
  # a prawn method for calculating that sort of thing precisely.
  left_top = [@document.bounds.left, fragment.top + vert_dist]

  @document.fill_color = @color.sub('#', '')
  @document.fill_rounded_rectangle(left_top, @width, @height, @radius)
  @document.fill_color = original_color
end