287 lines
5.5 KiB
Stylus
287 lines
5.5 KiB
Stylus
called-from = ()
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vendors = moz webkit o ms official
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// stringify the given arg
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-string(arg)
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type(arg) + ' ' + arg
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// require a color
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require-color(color)
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unless color is a 'color'
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error('RGB or HSL value expected, got a ' + -string(color))
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// require a unit
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require-unit(n)
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unless n is a 'unit'
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error('unit expected, got a ' + -string(n))
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// require a string
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require-string(str)
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unless str is a 'string' or str is a 'ident'
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error('string expected, got a ' + -string(str))
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// Math functions
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abs(n) { math(n, 'abs') }
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min(a, b) { a < b ? a : b }
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max(a, b) { a > b ? a : b }
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// Trigonometrics
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PI = -math-prop('PI')
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radians-to-degrees(angle)
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angle * (180 / PI)
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degrees-to-radians(angle)
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unit(angle * (PI / 180),'')
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sin(n)
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n = degrees-to-radians(n) if unit(n) == 'deg'
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round(math(n, 'sin'), 9)
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cos(n)
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n = degrees-to-radians(n) if unit(n) == 'deg'
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round(math(n, 'cos'), 9)
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// Rounding Math functions
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ceil(n, precision = 0)
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multiplier = 10 ** precision
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math(n * multiplier, 'ceil') / multiplier
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floor(n, precision = 0)
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multiplier = 10 ** precision
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math(n * multiplier, 'floor') / multiplier
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round(n, precision = 0)
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multiplier = 10 ** precision
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math(n * multiplier, 'round') / multiplier
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// return the sum of the given numbers
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sum(nums)
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sum = 0
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sum += n for n in nums
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// return the average of the given numbers
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avg(nums)
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sum(nums) / length(nums)
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// return a unitless number, or pass through
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remove-unit(n)
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if typeof(n) is "unit"
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unit(n, "")
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else
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n
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// convert a percent to a decimal, or pass through
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percent-to-decimal(n)
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if unit(n) is "%"
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remove-unit(n) / 100
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else
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n
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// check if n is an odd number
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odd(n)
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1 == n % 2
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// check if n is an even number
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even(n)
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0 == n % 2
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// check if color is light
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light(color)
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lightness(color) >= 50%
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// check if color is dark
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dark(color)
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lightness(color) < 50%
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// desaturate color by amount
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desaturate(color, amount)
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adjust(color, 'saturation', - amount)
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// saturate color by amount
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saturate(color = '', amount = 100%)
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if color is a 'color'
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adjust(color, 'saturation', amount)
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else
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unquote( "saturate(" + color + ")" )
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// darken by the given amount
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darken(color, amount)
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adjust(color, 'lightness', - amount)
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// lighten by the given amount
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lighten(color, amount)
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adjust(color, 'lightness', amount)
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// decrease opacity by amount
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fade-out(color, amount)
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color - rgba(black, percent-to-decimal(amount))
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// increase opacity by amount
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fade-in(color, amount)
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color + rgba(black, percent-to-decimal(amount))
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// spin hue by a given amount
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spin(color, amount)
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color + unit(amount, deg)
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// mix two colors by a given amount
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mix(color1, color2, weight = 50%)
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unless weight in 0..100
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error("Weight must be between 0% and 100%")
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if length(color1) == 2
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weight = color1[0]
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color1 = color1[1]
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else if length(color2) == 2
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weight = 100 - color2[0]
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color2 = color2[1]
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require-color(color1)
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require-color(color2)
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p = unit(weight / 100, '')
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w = p * 2 - 1
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a = alpha(color1) - alpha(color2)
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w1 = (((w * a == -1) ? w : (w + a) / (1 + w * a)) + 1) / 2
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w2 = 1 - w1
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channels = (red(color1) red(color2)) (green(color1) green(color2)) (blue(color1) blue(color2))
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rgb = ()
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for pair in channels
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push(rgb, floor(pair[0] * w1 + pair[1] * w2))
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a1 = alpha(color1) * p
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a2 = alpha(color2) * (1 - p)
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alpha = a1 + a2
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rgba(rgb[0], rgb[1], rgb[2], alpha)
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// invert colors, leave alpha intact
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invert(color = '')
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if color is a 'color'
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rgba(#fff - color, alpha(color))
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else
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unquote( "invert(" + color + ")" )
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// give complement of the given color
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complement( color )
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spin( color, 180 )
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// give grayscale of the given color
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grayscale( color = '' )
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if color is a 'color'
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desaturate( color, 100% )
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else
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unquote( "grayscale(" + color + ")" )
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// mix the given color with white
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tint( color, percent )
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mix( white, color, percent )
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// mix the given color with black
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shade( color, percent )
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mix( black, color, percent )
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// return the last value in the given expr
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last(expr)
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expr[length(expr) - 1]
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// return keys in the given pairs or object
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keys(pairs)
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ret = ()
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if type(pairs) == 'object'
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for key in pairs
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push(ret, key)
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else
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for pair in pairs
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push(ret, pair[0]);
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ret
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// return values in the given pairs or object
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values(pairs)
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ret = ()
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if type(pairs) == 'object'
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for key, val in pairs
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push(ret, val)
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else
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for pair in pairs
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push(ret, pair[1]);
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ret
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// join values with the given delimiter
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join(delim, vals...)
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buf = ''
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vals = vals[0] if length(vals) == 1
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for val, i in vals
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buf += i ? delim + val : val
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// add a CSS rule to the containing block
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// - This definition allows add-property to be used as a mixin
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// - It has the same effect as interpolation but allows users
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// to opt for a functional style
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add-property-function = add-property
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add-property(name, expr)
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if mixin
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{name} expr
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else
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add-property-function(name, expr)
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prefix-classes(prefix)
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-prefix-classes(prefix, block)
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// Caching mixin, use inside your functions to enable caching by extending.
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$stylus_mixin_cache = {}
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cache()
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$key = (current-media() or 'no-media') + '__' + called-from[0] + '__' + arguments
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if $key in $stylus_mixin_cache
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@extend {"$cache_placeholder_for_" + $stylus_mixin_cache[$key]}
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else if 'cache' in called-from
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{block}
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else
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$id = length($stylus_mixin_cache)
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&,
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/$cache_placeholder_for_{$id}
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$stylus_mixin_cache[$key] = $id
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{block}
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