Class: Rainbow::OpacityRange

Inherits:
Object
  • Object
show all
Defined in:
lib/rainbow/opacity_range.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(from_opacity, to_opacity, mid_point) ⇒ OpacityRange

Returns a new instance of OpacityRange.



9
10
11
12
13
14
15
 
# File 'lib/rainbow/opacity_range.rb', line 9

def initialize(from_opacity, to_opacity, mid_point)
  @from_opacity = from_opacity
  @to_opacity   = to_opacity
  @mid_point    = mid_point

  @mid_opacity  = from_opacity.value + (to_opacity.value - from_opacity.value) / 2
end

Instance Attribute Details

#first_width ⇒ Object (readonly)

Returns the value of attribute first_width.



4
5
6
 
# File 'lib/rainbow/opacity_range.rb', line 4

def first_width
  @first_width
end

#from_location_in_pixel ⇒ Object (readonly)

Returns the value of attribute from_location_in_pixel.



5
6
7
 
# File 'lib/rainbow/opacity_range.rb', line 5

def from_location_in_pixel
  @from_location_in_pixel
end

#from_opacity ⇒ Object (readonly)

Returns the value of attribute from_opacity.



3
4
5
 
# File 'lib/rainbow/opacity_range.rb', line 3

def from_opacity
  @from_opacity
end

#gradient ⇒ Object

Returns the value of attribute gradient.



3
4
5
 
# File 'lib/rainbow/opacity_range.rb', line 3

def gradient
  @gradient
end

#leftover_width ⇒ Object (readonly)

Returns the value of attribute leftover_width.



4
5
6
 
# File 'lib/rainbow/opacity_range.rb', line 4

def leftover_width
  @leftover_width
end

#mid_location_in_pixel ⇒ Object (readonly)

Returns the value of attribute mid_location_in_pixel.



5
6
7
 
# File 'lib/rainbow/opacity_range.rb', line 5

def mid_location_in_pixel
  @mid_location_in_pixel
end

#mid_opacity ⇒ Object (readonly)

Returns the value of attribute mid_opacity.



3
4
5
 
# File 'lib/rainbow/opacity_range.rb', line 3

def mid_opacity
  @mid_opacity
end

#mid_point ⇒ Object (readonly)

Returns the value of attribute mid_point.



3
4
5
 
# File 'lib/rainbow/opacity_range.rb', line 3

def mid_point
  @mid_point
end

#scale_end_in_pixel ⇒ Object (readonly)

Returns the value of attribute scale_end_in_pixel.



7
8
9
 
# File 'lib/rainbow/opacity_range.rb', line 7

def scale_end_in_pixel
  @scale_end_in_pixel
end

#scale_mid_in_pixel ⇒ Object (readonly)

Returns the value of attribute scale_mid_in_pixel.



7
8
9
 
# File 'lib/rainbow/opacity_range.rb', line 7

def scale_mid_in_pixel
  @scale_mid_in_pixel
end

#scale_start_in_pixel ⇒ Object (readonly)

Returns the value of attribute scale_start_in_pixel.



7
8
9
 
# File 'lib/rainbow/opacity_range.rb', line 7

def scale_start_in_pixel
  @scale_start_in_pixel
end

#second_width ⇒ Object (readonly)

Returns the value of attribute second_width.



4
5
6
 
# File 'lib/rainbow/opacity_range.rb', line 4

def second_width
  @second_width
end

#tmp_current_x ⇒ Object (readonly)

Returns the value of attribute tmp_current_x.



6
7
8
 
# File 'lib/rainbow/opacity_range.rb', line 6

def tmp_current_x
  @tmp_current_x
end

#tmp_diff ⇒ Object (readonly)

Returns the value of attribute tmp_diff.



6
7
8
 
# File 'lib/rainbow/opacity_range.rb', line 6

def tmp_diff
  @tmp_diff
end

#tmp_distance_in_pixel ⇒ Object (readonly)

Returns the value of attribute tmp_distance_in_pixel.



6
7
8
 
# File 'lib/rainbow/opacity_range.rb', line 6

def tmp_distance_in_pixel
  @tmp_distance_in_pixel
end

#tmp_from ⇒ Object (readonly)

Returns the value of attribute tmp_from.



6
7
8
 
# File 'lib/rainbow/opacity_range.rb', line 6

def tmp_from
  @tmp_from
end

#tmp_to ⇒ Object (readonly)

Returns the value of attribute tmp_to.



6
7
8
 
# File 'lib/rainbow/opacity_range.rb', line 6

def tmp_to
  @tmp_to
end

#to_location_in_pixel ⇒ Object (readonly)

Returns the value of attribute to_location_in_pixel.



5
6
7
 
# File 'lib/rainbow/opacity_range.rb', line 5

def to_location_in_pixel
  @to_location_in_pixel
end

#to_opacity ⇒ Object (readonly)

Returns the value of attribute to_opacity.



3
4
5
 
# File 'lib/rainbow/opacity_range.rb', line 3

def to_opacity
  @to_opacity
end

#width ⇒ Object (readonly)

Returns the value of attribute width.



4
5
6
 
# File 'lib/rainbow/opacity_range.rb', line 4

def width
  @width
end

Instance Method Details

#current_x=(x) ⇒ Object 



26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
 
# File 'lib/rainbow/opacity_range.rb', line 26

def current_x=(x)
  if x == 0 && from_opacity.location > 0
    @tmp_current_x         = 0.0
    @tmp_diff              = 0
    @tmp_from              = from_opacity.value
    @tmp_to                = from_opacity.value
    @tmp_distance_in_pixel = from_location_in_pixel
  elsif x == to_location_in_pixel && to_opacity.location < 100
    @tmp_current_x         = 0.0
    @tmp_diff              = 0
    @tmp_from              = to_opacity.value
    @tmp_to                = to_opacity.value
    @tmp_distance_in_pixel = leftover_width
  elsif x == from_location_in_pixel && gradient.scale_100?
    @tmp_current_x         = 0.0
    @tmp_diff              = mid_opacity - from_opacity.value
    @tmp_from              = from_opacity.value
    @tmp_to                = mid_opacity
    @tmp_distance_in_pixel = first_width
  elsif x == mid_location_in_pixel && gradient.scale_100?
    @tmp_current_x         = 0.0
    @tmp_diff              = to_opacity.value - mid_opacity
    @tmp_from              = mid_opacity
    @tmp_to                = to_opacity.value
    @tmp_distance_in_pixel = second_width
  elsif x == from_location_in_pixel && !gradient.scale_100?
    @tmp_current_x         = 0.0
    @tmp_diff              = 0
    @tmp_from              = from_opacity.value
    @tmp_to                = from_opacity.value
    @tmp_distance_in_pixel = 1
  elsif x == gradient.scale_start_location_in_pixel && !gradient.scale_100?
    @tmp_current_x         = 0.0
    @tmp_diff              = mid_opacity - from_opacity.value
    @tmp_from              = from_opacity.value
    @tmp_to                = from_opacity.value
    @tmp_distance_in_pixel = gradient.scale_half_distance_in_pixel
  elsif x == gradient.scale_mid_location_in_pixel && !gradient.scale_100?
    @tmp_current_x         = 0.0
    @tmp_diff              = to_opacity.value - mid_opacity
    @tmp_from              = mid_opacity
    @tmp_to                = to_opacity.value
    @tmp_distance_in_pixel = gradient.scale_half_distance_in_pixel
  else
    @tmp_current_x += 1
  end
end

#included?(x) ⇒ Boolean

Returns:

  • (Boolean) 


17
18
19
 
# File 'lib/rainbow/opacity_range.rb', line 17

def included?(x)
  @from_location_in_pixel <= x && x <= @to_location_in_pixel
end