datat.fi/docs/_sass/basically-basic/vendor/breakpoint/_helpers.scss

152 lines
4.2 KiB
SCSS

//////////////////////////////
// Converts the input value to Base EMs
//////////////////////////////
@function breakpoint-to-base-em($value) {
$value-unit: unit($value);
// Will convert relative EMs into root EMs.
@if breakpoint-get('base font size') and type-of(breakpoint-get('base font size')) == 'number' and $value-unit == 'em' {
$base-unit: unit(breakpoint-get('base font size'));
@if $base-unit == 'px' or $base-unit == '%' or $base-unit == 'em' or $base-unit == 'pt' {
@return base-conversion($value) / base-conversion(breakpoint-get('base font size')) * 1em;
}
@else {
@warn '#{breakpoint-get(\'base font size\')} is not set in valid units for font size!';
@return false;
}
}
@else {
@return base-conversion($value);
}
}
@function base-conversion($value) {
$unit: unit($value);
@if $unit == 'px' {
@return $value / 16px * 1em;
}
@else if $unit == '%' {
@return $value / 100% * 1em;
}
@else if $unit == 'em' {
@return $value;
}
@else if $unit == 'pt' {
@return $value / 12pt * 1em;
}
@else {
@return $value;
// @warn 'Everything is terrible! What have you done?!';
}
}
//////////////////////////////
// Returns whether the feature can have a min/max pair
//////////////////////////////
$breakpoint-min-max-features: 'color',
'color-index',
'aspect-ratio',
'device-aspect-ratio',
'device-height',
'device-width',
'height',
'monochrome',
'resolution',
'width';
@function breakpoint-min-max($feature) {
@each $item in $breakpoint-min-max-features {
@if $feature == $item {
@return true;
}
}
@return false;
}
//////////////////////////////
// Returns whether the feature can have a string value
//////////////////////////////
$breakpoint-string-features: 'orientation',
'scan',
'color',
'aspect-ratio',
'device-aspect-ratio',
'pointer',
'luminosity';
@function breakpoint-string-value($feature) {
@each $item in $breakpoint-string-features {
@if breakpoint-min-max($item) {
@if $feature == 'min-#{$item}' or $feature == 'max-#{$item}' {
@return true;
}
}
@else if $feature == $item {
@return true;
}
}
@return false;
}
//////////////////////////////
// Returns whether the feature is a media type
//////////////////////////////
$breakpoint-media-types: 'all',
'braille',
'embossed',
'handheld',
'print',
'projection',
'screen',
'speech',
'tty',
'tv';
@function breakpoint-is-media($feature) {
@each $media in $breakpoint-media-types {
@if ($feature == $media) or ($feature == 'not #{$media}') or ($feature == 'only #{$media}') {
@return true;
}
}
@return false;
}
//////////////////////////////
// Returns whether the feature can stand alone
//////////////////////////////
$breakpoint-single-string-features: 'color',
'color-index',
'grid',
'monochrome';
@function breakpoint-single-string($feature) {
@each $item in $breakpoint-single-string-features {
@if $feature == $item {
@return true;
}
}
@return false;
}
//////////////////////////////
// Returns whether the feature
//////////////////////////////
@function breakpoint-is-resolution($feature) {
$resolutions: 'device-pixel-ratio', 'dpr';
@if breakpoint-get('transform resolutions') {
$resolutions: append($resolutions, 'resolution');
}
@each $reso in $resolutions {
@if index($feature, $reso) or index($feature, 'min-#{$reso}') or index($feature, 'max-#{$reso}') {
@return true;
}
}
@return false;
}