Module: Bulldog::Attachment::HasDimensions

Included in:
Image, Pdf, Video
Defined in:
lib/bulldog/attachment/has_dimensions.rb

Overview

Module for dealing with dimensions.

Note that due to the way stored attributes are implemented, this module must be included after the definition of #dimensions.

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



10
11
12
13
14
15
16
 
# File 'lib/bulldog/attachment/has_dimensions.rb', line 10

def self.included(base)
  super
  base.class_eval do
    storable_attribute :width , :per_style => true, :memoize => true
    storable_attribute :height, :per_style => true, :memoize => true
  end
end

Instance Method Details

#aspect_ratio(style_name = nil) ⇒ Object

Return the aspect ratio of the named style.

style_name defaults to the attribute’s #default_style.



51
52
53
54
55
56
57
58
59
60
61
 
# File 'lib/bulldog/attachment/has_dimensions.rb', line 51

def aspect_ratio(style_name=nil)
  style_name ||= reflection.default_style
  if style_name.equal?(:original)
    original_width = from_examination(:@original_width)
    original_height = from_examination(:@original_height)
    original_width.to_f / original_height
  else
    w, h = *dimensions(style_name)
    w.to_f / h
  end
end

#dimensions(style_name = nil) ⇒ Object

Return the width and height of the named style, as a 2-element array.



67
68
69
70
71
72
73
74
75
76
 
# File 'lib/bulldog/attachment/has_dimensions.rb', line 67

def dimensions(style_name=nil)
  style_name ||= reflection.default_style
  if style_name.equal?(:original)
    original_width = from_examination(:@original_width)
    original_height = from_examination(:@original_height)
    [original_width, original_height]
  else
    resize_dimensions(dimensions(:original), reflection.styles[style_name])
  end
end

#height(style_name = nil) ⇒ Object

Return the height of the named style.

style_name defaults to the attribute’s #default_style.



37
38
39
40
41
42
43
44
 
# File 'lib/bulldog/attachment/has_dimensions.rb', line 37

def height(style_name=nil)
  style_name ||= reflection.default_style
  if style_name.equal?(:original)
    from_examination :@original_height
  else
    dimensions(style_name).at(1)
  end
end

#width(style_name = nil) ⇒ Object

Return the width of the named style.

style_name defaults to the attribute’s #default_style.



23
24
25
26
27
28
29
30
 
# File 'lib/bulldog/attachment/has_dimensions.rb', line 23

def width(style_name=nil)
  style_name ||= reflection.default_style
  if style_name.equal?(:original)
    from_examination :@original_width
  else
    dimensions(style_name).at(0)
  end
end