Class: UIColor
- Defined in:
- lib/ios/sugarcube-to_s/uicolor.rb,
lib/ios/sugarcube-color/uicolor.rb,
lib/ios/sugarcube-image/uicolor.rb
Instance Method Summary collapse
-
#+(color) ⇒ Object
blends two colors by averaging the RGB and alpha components.
-
#<<(color) ⇒ Object
blends two colors by adding the colors, with an upper maximum of 255.
- #alpha ⇒ Object
- #blue ⇒ Object
- #brightness ⇒ Object
- #cgcolor(alpha = nil) ⇒ Object
- #cicolor ⇒ Object
-
#css_name ⇒ Object
returns the closest css name.
- #green ⇒ Object
- #hex ⇒ Object
- #hue ⇒ Object
-
#invert ⇒ Object
inverts the RGB channel.
-
#mix_with(color, amount) ⇒ Object
a more generic color mixing method.
- #red ⇒ Object
- #saturation ⇒ Object
- #skcolor(alpha = nil) ⇒ Object
- #system_name ⇒ Object
-
#to_a ⇒ Object
returns the components as an array of 32 bit RGB values.
-
#to_i ⇒ Object
returns the components OR’d together, as 32 bit RGB integer.
- #to_s ⇒ Object
- #uicolor(alpha = nil) ⇒ Object
Instance Method Details
#+(color) ⇒ Object
blends two colors by averaging the RGB and alpha components.
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# File 'lib/ios/sugarcube-color/uicolor.rb', line 22 def +(color) mix_with(color.uicolor, 0.5) end |
#<<(color) ⇒ Object
blends two colors by adding the colors, with an upper maximum of 255. Adding white to any color will create white, adding black will do nothing. Also takes transparency into account; adding a transparent color has no effect, adding an opaque color has the most effect.
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# File 'lib/ios/sugarcube-color/uicolor.rb', line 33 def <<(color) r = [1.0, color.red * color.alpha + self.red].min g = [1.0, color.green * color.alpha + self.green].min b = [1.0, color.blue * color.alpha + self.blue].min a = self.alpha UIColor.colorWithRed(r, green:g, blue:b, alpha:a) end |
#alpha ⇒ Object
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# File 'lib/ios/sugarcube-color/uicolor.rb', line 113 def alpha if @sugarcube_hsb_colors @sugarcube_hsb_colors[:alpha] elsif _sugarcube_rgb_colors _sugarcube_rgb_colors[:alpha] end end |
#blue ⇒ Object
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# File 'lib/ios/sugarcube-color/uicolor.rb', line 109 def blue _sugarcube_rgb_colors && _sugarcube_rgb_colors[:blue] end |
#brightness ⇒ Object
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# File 'lib/ios/sugarcube-color/uicolor.rb', line 97 def brightness _sugarcube_hsb_colors && _sugarcube_hsb_colors[:brightness] end |
#cgcolor(alpha = nil) ⇒ Object
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# File 'lib/ios/sugarcube-color/uicolor.rb', line 11 def cgcolor(alpha=nil) uicolor(alpha).CGColor end |
#cicolor ⇒ Object
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# File 'lib/ios/sugarcube-image/uicolor.rb', line 3 def cicolor self.CIColor end |
#css_name ⇒ Object
returns the closest css name
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# File 'lib/ios/sugarcube-color/uicolor.rb', line 157 def css_name my_color = self.to_i css_name = nil Symbol.css_colors.each do |color, hex| if hex == my_color css_name = color break end end return css_name end |
#green ⇒ Object
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# File 'lib/ios/sugarcube-color/uicolor.rb', line 105 def green _sugarcube_rgb_colors && _sugarcube_rgb_colors[:green] end |
#hex ⇒ Object
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# File 'lib/ios/sugarcube-color/uicolor.rb', line 147 def hex my_color = self.to_i if my_color return '#' + my_color.to_s(16).rjust(6, '0') else nil end end |
#hue ⇒ Object
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# File 'lib/ios/sugarcube-color/uicolor.rb', line 89 def hue _sugarcube_hsb_colors && _sugarcube_hsb_colors[:hue] end |
#invert ⇒ Object
inverts the RGB channel. keeps the alpha channel unchanged
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# File 'lib/ios/sugarcube-color/uicolor.rb', line 81 def invert r = 1.0 - self.red g = 1.0 - self.green b = 1.0 - self.blue a = self.alpha UIColor.colorWithRed(r, green:g, blue:b, alpha:a) end |
#mix_with(color, amount) ⇒ Object
a more generic color mixing method. mixes two colors, but a second parameter determines how much of each. 0.5 means equal parts, 0.0 means use all of the first, and 1.0 means use all of the second
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# File 'lib/ios/sugarcube-color/uicolor.rb', line 44 def mix_with(color, amount) color = color.uicolor # make amount between 0 and 1 amount = [[0, amount].max, 1].min # start with precise amounts: 0, 0.5, and 1. if amount == 0 && self.alpha == color.alpha self elsif amount == 1 && self.alpha == color.alpha color elsif amount == 0.5 && self.alpha == color.alpha r = (self.red + color.red) / 2 g = (self.green + color.green) / 2 b = (self.blue + color.blue) / 2 a = self.alpha UIColor.colorWithRed(r, green:g, blue:b, alpha:a) else a = (color.alpha - self.alpha) * amount + self.alpha return UIColor.clearColor if a == 0 color_red = color.red * color.alpha + self.red * (1 - color.alpha) self_red = self.red * self.alpha + color.red * (1 - self.alpha) color_green = color.green * color.alpha + self.green * (1 - color.alpha) self_green = self.green * self.alpha + color.green * (1 - self.alpha) color_blue = color.blue * color.alpha + self.blue * (1 - color.alpha) self_blue = self.blue * self.alpha + color.blue * (1 - self.alpha) r = (color_red - self_red) * amount + self_red g = (color_green - self_green) * amount + self_green b = (color_blue - self_blue) * amount + self_blue UIColor.colorWithRed(r, green:g, blue:b, alpha:a) end end |
#red ⇒ Object
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# File 'lib/ios/sugarcube-color/uicolor.rb', line 101 def red _sugarcube_rgb_colors && _sugarcube_rgb_colors[:red] end |
#saturation ⇒ Object
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# File 'lib/ios/sugarcube-color/uicolor.rb', line 93 def saturation _sugarcube_hsb_colors && _sugarcube_hsb_colors[:saturation] end |
#skcolor(alpha = nil) ⇒ Object
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# File 'lib/ios/sugarcube-color/uicolor.rb', line 15 def skcolor(alpha=nil) uicolor(alpha) end |
#system_name ⇒ Object
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# File 'lib/ios/sugarcube-color/uicolor.rb', line 169 def system_name system_color = nil without_alpha = self.uicolor(1) Symbol.uicolors.each do |color, method| if UIColor.send(method) == without_alpha system_color = method break end end return system_color end |
#to_a ⇒ Object
returns the components as an array of 32 bit RGB values. alpha channel is dropped
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# File 'lib/ios/sugarcube-color/uicolor.rb', line 136 def to_a if self.red && self.green && self.blue red = (self.red * 255).round green = (self.green * 255).round blue = (self.blue * 255).round return [red, green, blue] else return nil end end |
#to_i ⇒ Object
returns the components OR’d together, as 32 bit RGB integer. alpha channel is dropped
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# File 'lib/ios/sugarcube-color/uicolor.rb', line 123 def to_i if self.red && self.green && self.blue red = (self.red * 255).round << 16 green = (self.green * 255).round << 8 blue = (self.blue * 255).round return red + green + blue else return nil end end |
#to_s ⇒ Object
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# File 'lib/ios/sugarcube-to_s/uicolor.rb', line 3 def to_s return super unless self.respond_to?(:alpha) alpha_s = ((alpha || 1) < 1 ? "(#{alpha})" : '') if system_name return "UIColor.#{system_name}#{alpha_s.length > 0 ? '.colorWithAlphaComponent' + alpha_s : ''}" elsif css_name return ":#{css_name}.uicolor#{alpha_s}" elsif hex return "'#{hex}'.uicolor#{alpha_s}" else super end end |
#uicolor(alpha = nil) ⇒ Object
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# File 'lib/ios/sugarcube-color/uicolor.rb', line 3 def uicolor(alpha=nil) if alpha self.colorWithAlphaComponent(alpha.to_f) else self end end |