pre-css-lib/lib.styl at master · pvalentim/pre-css-lib · GitHub

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//
// Create triangle shape
//
// Parameters:
// - width (px)
// - height (px)
// - colour
// - direction (top/bottom/left/right)
//

triangle(w, h, c, d='top')
  width 0px
  height 0px
  border-style solid
  if d == 'top'
    border-width 0 (w/2) h (w/2)
    border-color transparent transparent c transparent
  if d == 'bottom'
    border-width h (w/2) 0 (w/2)
    border-color c transparent transparent transparent
  if d == 'left'
    border-width (h/2) w (h/2) 0
    border-color transparent c transparent transparent
  if d == 'right'
    border-width (h/2) 0 (h/2) w
    border-color transparent transparent transparent c

//
// Create paper shadow like effect
//
// Parameters:
// - bottom (px)
// - height (px)
// - colour
//

paper-shadow(bottom = 20px, height = 15px, color=#333333)
  display block
  position relative
  &:after, &:before
    z-index -1
    content ''
    width 50%
    position absolute
    top 80%
    bottom bottom
    box-shadow 0 height 8px color
    background white

  &:after
    transform rotate(3deg)
    right 10px
    left auto
  &:before
    transform rotate(-3deg)
    left 10px
    right auto

//
// Image replacement
//

ir()
  &:before
    content ''
    display block
    width 0
    height 150%
  background-color transparent
  border 0
  overflow hidden
  *text-indent -9999px


//
// Media Queries with fallback for IE
//
//  Parameteres:
//  - media (media query string)
//  - content (mixin)
//

respond-to(media, content, args...)
  if $oldie
    content(args)
  else
    @media media
      content(args)

//
// Borders
//
//  Parameteres:
//  - sides (top/left/bottom/right)
//  - args (border styles) ex: 1px solid red
//

border-sides(sides, args...)
  for side in sides
    border-{side} args

//
// MATH Utils
//

// Converts degrees to radians

toRad(degrees)
  degrees * PI / 180

// Finds X,Y points based on radius and angle

circleEquationX(start, radius, angle)
  start + radius * cos(toRad(angle))
circleEquationY(start, radius, angle)
  start + radius * sin(toRad(angle))