@import "shared";

// CSS Transform and Transform-Origin

// Apply a transform sent as a complete string.

@mixin apply-transform($transform) {
  @include experimental(transform, $transform);
}

// Apply a transform-origin sent as a complete string.

@mixin apply-origin($origin) {
  @include experimental(transform-origin, $origin);
}

// transform-origin requires x and y coordinates
//
// * only applies the coordinates if they are there so that it can be called by scale, rotate and skew safely

@mixin transform-origin($originx: 50%, $originy: 50%) {
  @if $originx or $originy {
    @if $originy {
       @include apply-origin($originx or 50% $originy);
     } @else {
       @include apply-origin($originx);
     }
  }
} 

// A full transform mixin with everything you could want
//
// * including origin adjustments if you want them
// * scale, rotate and skew require units of degrees(deg)
// * scale takes a multiplier, rotate and skew take degrees

@mixin transform(
  $scale: 1,
  $rotate: 0deg,
  $transx: 0,
  $transy: 0,
  $skewx: 0deg,
  $skewy: 0deg,
  $originx: false,
  $originy: false
) {
  $transform : scale($scale) rotate($rotate) translate($transx, $transy) skew($skewx, $skewy);
  @include apply-transform($transform);
  @include transform-origin($originx, $originy);
}

// Transform Partials
//
// These work well on their own, but they don't add to each other, they override.
// Use them with extra origin args, or along side +transform-origin

// Adjust only the scale, with optional origin coordinates

@mixin scale($scale: 1.25, $originx: false, $originy: false) {
  @include apply-transform(scale($scale));
  @include transform-origin($originx, $originy);
}

// Adjust only the rotation, with optional origin coordinates

@mixin rotate($rotate: 45deg, $originx: false, $originy: false) {
  @include apply-transform(rotate($rotate));
  @include transform-origin($originx, $originy);
}

// Adjust only the translation

@mixin translate($transx: 0, $transy: 0) {
  @include apply-transform(translate($transx, $transy));
}

// Adjust only the skew, with optional origin coordinates
@mixin skew($skewx: 0deg, $skewy: 0deg, $originx: false, $originy: false) {
  @include apply-transform(skew($skewx, $skewy));
  @include transform-origin($originx, $originy);
}