class Rabbit::Renderer::Color
Constants
- GDK_COLOR_NORMALIZE
- HEX
Public Instance Methods
new_from_gdk_color(color, have_alpha=false)
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# File lib/rabbit/renderer/color.rb, line 12 def new_from_gdk_color(color, have_alpha=false) red = color.red / GDK_COLOR_NORMALIZE green = color.green / GDK_COLOR_NORMALIZE blue = color.blue / GDK_COLOR_NORMALIZE alpha = 1.0 new(red, green, blue, alpha, have_alpha) end
normalize(r, g, b, a, max)
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# File lib/rabbit/renderer/color.rb, line 36 def normalize(r, g, b, a, max) red = r.hex / max.to_f green = g.hex / max.to_f blue = b.hex / max.to_f have_alpha = !a.nil? alpha = have_alpha ? a.hex / max.to_f : 1.0 [red, green, blue, alpha, have_alpha] end
parse(spec)
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# File lib/rabbit/renderer/color.rb, line 21 def parse(spec) case spec when Array new(*spec) when /\A\#(#{HEX})(#{HEX})(#{HEX})(#{HEX})?\z/ new(*normalize($1, $2, $3, $4, 16 ** 1 - 1)) when /\A\#(#{HEX}{2})(#{HEX}{2})(#{HEX}{2})(#{HEX}{2})?\z/ new(*normalize($1, $2, $3, $4, 16 ** 2 - 1)) when /\A\#(#{HEX}{4})(#{HEX}{4})(#{HEX}{4})(#{HEX}{4})?\z/ new(*normalize($1, $2, $3, $4, 16 ** 4 - 1)) else new_from_gdk_color(Gdk::Color.parse(spec)) end end
to_a()
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# File lib/rabbit/renderer/color.rb, line 52 def to_a if have_alpha? [red, green, blue, alpha] else [red, green, blue] end end
to_gdk_color()
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# File lib/rabbit/renderer/color.rb, line 74 def to_gdk_color Gdk::Color.new(*to_gdk_rgb) end
to_gdk_format()
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# File lib/rabbit/renderer/color.rb, line 70 def to_gdk_format to_s.gsub(/[a-z0-9]{4}\z/i, '') end
to_gdk_rgb()
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# File lib/rabbit/renderer/color.rb, line 60 def to_gdk_rgb to_gdk_rgba[0..-2] end
to_gdk_rgba()
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# File lib/rabbit/renderer/color.rb, line 64 def to_gdk_rgba [red, green, blue, alpha || 1.0].collect do |color| (color * GDK_COLOR_NORMALIZE).truncate end end
to_s()
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# File lib/rabbit/renderer/color.rb, line 48 def to_s "#%04X%04X%04X%04X" % to_gdk_rgba end