Module: Prawn::Graphics::Color
- Included in:
- Prawn::Graphics
- Defined in:
- lib/prawn/graphics/color.rb
Class Method Summary collapse
-
.hex2rgb(hex) ⇒ Object
Converts hex string into RGB value array:.
-
.rgb2hex(rgb) ⇒ Object
Converts RGB value array to hex string suitable for use with fill_color and stroke_color.
Instance Method Summary collapse
-
#fill_color(*color) ⇒ Object
(also: #fill_color=)
Sets or returns the fill color.
-
#stroke_color(*color) ⇒ Object
(also: #stroke_color=)
Sets or returns the line stroking color.
Class Method Details
.hex2rgb(hex) ⇒ Object
Converts hex string into RGB value array:
>> Prawn::Graphics::Color.hex2rgb("ff7808")
=> [255, 120, 8]
75 76 77 78 |
# File 'lib/prawn/graphics/color.rb', line 75 def hex2rgb(hex) r,g,b = hex[0..1], hex[2..3], hex[4..5] [r,g,b].map { |e| e.to_i(16) } end |
.rgb2hex(rgb) ⇒ Object
Converts RGB value array to hex string suitable for use with fill_color and stroke_color
>> Prawn::Graphics::Color.rgb2hex([255,120,8])
=> "ff7808"
66 67 68 |
# File 'lib/prawn/graphics/color.rb', line 66 def rgb2hex(rgb) rgb.map { |e| "%02x" % e }.join end |
Instance Method Details
#fill_color(*color) ⇒ Object Also known as: fill_color=
Sets or returns the fill color.
When called with no argument, it returns the current fill color.
If a single argument is provided, it should be a 6 digit HTML color code.
pdf.fill_color "f0ffc1"
If 4 arguments are provided, the color is assumed to be a CMYK value Values range from 0 - 100.
pdf.fill_color 0, 99, 95, 0
27 28 29 30 31 |
# File 'lib/prawn/graphics/color.rb', line 27 def fill_color(*color) return current_fill_color if color.empty? self.current_fill_color = process_color(*color) set_fill_color end |
#stroke_color(*color) ⇒ Object Also known as: stroke_color=
Sets or returns the line stroking color.
When called with no argument, it returns the current stroking color.
If a single argument is provided, it should be a 6 digit HTML color code.
pdf.stroke_color "f0ffc1"
If 4 arguments are provided, the color is assumed to be a CMYK value Values range from 0 - 100.
pdf.stroke_color 0, 99, 95, 0
49 50 51 52 53 54 |
# File 'lib/prawn/graphics/color.rb', line 49 def stroke_color(*color) return current_stroke_color if color.empty? color = process_color(*color) self.current_stroke_color = color set_stroke_color(color) end |