_mixins.scss

/**
 * Breakpoint mixins
 */

@mixin break-huge() {
	@media (min-width: #{ ($break-huge) }) {
		@content;
	}
}

@mixin break-wide() {
	@media (min-width: #{ ($break-wide) }) {
		@content;
	}
}

@mixin break-xlarge() {
	@media (min-width: #{ ($break-xlarge) }) {
		@content;
	}
}

@mixin break-large() {
	@media (min-width: #{ ($break-large) }) {
		@content;
	}
}

@mixin break-medium() {
	@media (min-width: #{ ($break-medium) }) {
		@content;
	}
}

@mixin break-small() {
	@media (min-width: #{ ($break-small) }) {
		@content;
	}
}

@mixin break-mobile() {
	@media (min-width: #{ ($break-mobile) }) {
		@content;
	}
}

@mixin break-zoomed-in() {
	@media (min-width: #{ ($break-zoomed-in) }) {
		@content;
	}
}


/**
 * Long content fade mixin
 *
 * Creates a fading overlay to signify that the content is longer
 * than the space allows.
 */

@mixin long-content-fade($direction: right, $size: 20%, $color: #fff, $edge: 0, $z-index: false) {
	content: "";
	display: block;
	position: absolute;
	-webkit-touch-callout: none;
	-webkit-user-select: none;
	-khtml-user-select: none;
	-moz-user-select: none;
	-ms-user-select: none;
	user-select: none;
	pointer-events: none;

	@if $z-index {
		z-index: $z-index;
	}

	@if $direction == "bottom" {
		background: linear-gradient(to top, rgba($color, 0), $color 90%);
		left: $edge;
		right: $edge;
		top: $edge;
		bottom: calc(100% - $size);
		width: auto;
	}

	@if $direction == "top" {
		background: linear-gradient(to bottom, rgba($color, 0), $color 90%);
		top: calc(100% - $size);
		left: $edge;
		right: $edge;
		bottom: $edge;
		width: auto;
	}

	@if $direction == "left" {
		background: linear-gradient(to left, rgba($color, 0), $color 90%);
		top: $edge;
		left: $edge;
		bottom: $edge;
		right: auto;
		width: $size;
		height: auto;
	}

	@if $direction == "right" {
		background: linear-gradient(to right, rgba($color, 0), $color 90%);
		top: $edge;
		bottom: $edge;
		right: $edge;
		left: auto;
		width: $size;
		height: auto;
	}
}

/**
 * Focus styles.
 */

@mixin block-toolbar-button-style__focus() {
	box-shadow: inset 0 0 0 var(--wp-admin-border-width-focus) var(--wp-admin-theme-color), inset 0 0 0 4px $white;

	// Windows High Contrast mode will show this outline, but not the box-shadow.
	outline: 2px solid transparent;
}

// Tabs, Inputs, Square buttons.
@mixin input-style__neutral() {
	box-shadow: 0 0 0 transparent;
	transition: box-shadow 0.1s linear;
	border-radius: $radius-block-ui;
	border: $border-width solid $gray-700;
	@include reduce-motion("transition");
}


@mixin input-style__focus() {
	border-color: var(--wp-admin-theme-color);
	box-shadow: 0 0 0 ($border-width-focus - $border-width) var(--wp-admin-theme-color);

	// Windows High Contrast mode will show this outline, but not the box-shadow.
	outline: 2px solid transparent;
}


/**
 * Applies editor left position to the selector passed as argument
 */

@mixin editor-left($selector) {
	#{$selector} { /* Set left position when auto-fold is not on the body element. */
		left: 0;

		@media (min-width: #{ ($break-medium + 1) }) {
			left: $admin-sidebar-width;
		}
	}

	.auto-fold #{$selector} { /* Auto fold is when on smaller breakpoints, nav menu auto collapses. */
		@media (min-width: #{ ($break-medium + 1) }) {
			left: $admin-sidebar-width-collapsed;
		}

		@media (min-width: #{ ($break-large + 1) }) {
			left: $admin-sidebar-width;
		}
	}

	/* Sidebar manually collapsed. */
	.folded #{$selector} {
		left: 0;

		@media (min-width: #{ ($break-medium + 1) }) {
			left: $admin-sidebar-width-collapsed;
		}
	}

	body.is-fullscreen-mode #{$selector} {
		left: 0 !important;
	}
}

/**
 * Styles that are reused verbatim in a few places
 */

// These are additional styles for all captions, when the theme opts in to block styles.
@mixin caption-style() {
	margin-top: 0.5em;
	margin-bottom: 1em;
}

@mixin caption-style-theme() {
	color: #555;
	font-size: $default-font-size;
	text-align: center;

	.is-dark-theme & {
		color: $light-gray-placeholder;
	}
}


/**
 * Allows users to opt-out of animations via OS-level preferences.
 */

@mixin reduce-motion($property: "") {

	@if $property == "transition" {
		@media (prefers-reduced-motion: reduce) {
			transition-duration: 0s;
			transition-delay: 0s;
		}
	}

	@else if $property == "animation" {
		@media (prefers-reduced-motion: reduce) {
			animation-duration: 1ms;
			animation-delay: 0s;
		}
	}

	@else {
		@media (prefers-reduced-motion: reduce) {
			transition-duration: 0s;
			transition-delay: 0s;
			animation-duration: 1ms;
			animation-delay: 0s;
		}
	}

}

@mixin input-control {
	font-family: $default-font;
	padding: 6px 8px;
	@include input-style__neutral();

	/* Fonts smaller than 16px causes mobile safari to zoom. */
	font-size: $mobile-text-min-font-size;
	/* Override core line-height. To be reviewed. */
	line-height: normal;
	@include break-small {
		font-size: $default-font-size;
		/* Override core line-height. To be reviewed. */
		line-height: normal;
	}

	&:focus {
		@include input-style__focus();
	}

	// Use opacity to work in various editor styles.
	&::-webkit-input-placeholder {
		color: $dark-gray-placeholder;
	}

	&::-moz-placeholder {
		opacity: 1; // Necessary because Firefox reduces this from 1.
		color: $dark-gray-placeholder;
	}

	&:-ms-input-placeholder {
		color: $dark-gray-placeholder;
	}

	.is-dark-theme & {
		&::-webkit-input-placeholder {
			color: $light-gray-placeholder;
		}

		&::-moz-placeholder {
			opacity: 1; // Necessary because Firefox reduces this from 1.
			color: $light-gray-placeholder;
		}

		&:-ms-input-placeholder {
			color: $light-gray-placeholder;
		}
	}
}

@mixin checkbox-control {
	@include input-control;
	border: $border-width solid $gray-900;
	margin-right: $grid-unit-15;
	transition: none;
	border-radius: $radius-block-ui;

	&:focus {
		box-shadow: 0 0 0 ($border-width * 2) $white, 0 0 0 ($border-width * 2 + $border-width-focus) var(--wp-admin-theme-color);

		// Only visible in Windows High Contrast mode.
		outline: 2px solid transparent;
	}

	&:checked {
		background: var(--wp-admin-theme-color);
		border-color: var(--wp-admin-theme-color);

		// Hide default checkbox styles in IE.
		&::-ms-check {
			opacity: 0;
		}
	}

	&:checked::before,
	&[aria-checked="mixed"]::before {
		margin: -3px -5px;
		color: $white;

		@include break-medium() {
			margin: -4px 0 0 -5px;
		}
	}

	&[aria-checked="mixed"] {
		background: var(--wp-admin-theme-color);
		border-color: var(--wp-admin-theme-color);

		&::before {
			// Inherited from `forms.css`.
			// See: https://github.com/WordPress/wordpress-develop/tree/5.1.1/src/wp-admin/css/forms.css#L122-L132
			content: "\f460";
			float: left;
			display: inline-block;
			vertical-align: middle;
			width: 16px;
			/* stylelint-disable */
			font: normal 30px/1 dashicons;
			/* stylelint-enable */
			speak: none;
			-webkit-font-smoothing: antialiased;
			-moz-osx-font-smoothing: grayscale;

			@include break-medium() {
				float: none;
				font-size: 21px;
			}
		}
	}
}

@mixin radio-control {
	@include input-control;
	border: $border-width solid $gray-900;
	margin-right: $grid-unit-15;
	transition: none;
	border-radius: $radius-round;
	width: $radio-input-size-sm;
	height: $radio-input-size-sm;

	@include break-small() {
		height: $radio-input-size;
		width: $radio-input-size;
	}

	&:checked::before {
		width: 8px;
		height: 8px;
		transform: translate(7px, 7px);
		margin: 0;
		background-color: $white;

		// This border serves as a background color in Windows High Contrast mode.
		border: 4px solid $white;

		@include break-small() {
			transform: translate(5px, 5px);
		}
	}

	&:focus {
		box-shadow: 0 0 0 ($border-width * 2) $white, 0 0 0 ($border-width * 2 + $border-width-focus) var(--wp-admin-theme-color);

		// Only visible in Windows High Contrast mode.
		outline: 2px solid transparent;
	}

	&:checked {
		background: var(--wp-admin-theme-color);
		border-color: var(--wp-admin-theme-color);
	}
}

/**
 * Reset default styles for JavaScript UI based pages.
 * This is a WP-admin agnostic reset
 */
@mixin reset {
	box-sizing: border-box;

	*,
	*::before,
	*::after {
		box-sizing: inherit;
	}
}

/**
 * Reset the WP Admin page styles for Gutenberg-like pages.
 */
@mixin wp-admin-reset( $content-container ) {
	background: $white;

	#wpcontent {
		padding-left: 0;
	}

	#wpbody-content {
		padding-bottom: 0;
	}

	/* We hide legacy notices in Gutenberg Based Pages, because they were not designed in a way that scaled well.
	   Plugins can use Gutenberg notices if they need to pass on information to the user when they are editing. */
	#wpbody-content > div:not(#{ $content-container }):not(#screen-meta) {
		display: none;
	}

	#wpfooter {
		display: none;
	}

	.a11y-speak-region {
		left: -1px;
		top: -1px;
	}

	ul#adminmenu a.wp-has-current-submenu::after,
	ul#adminmenu > li.current > a.current::after {
		border-right-color: $white;
	}

	.media-frame select.attachment-filters:last-of-type {
		width: auto;
		max-width: 100%;
	}
}

@mixin admin-scheme($color-primary) {
	--wp-admin-theme-color: #{$color-primary};

	// Darker shades.
	--wp-admin-theme-color-darker-10: #{darken($color-primary, 5%)};
	--wp-admin-theme-color-darker-20: #{darken($color-primary, 10%)};

	// Focus style width.
	// Avoid rounding issues by showing a whole 2px for 1x screens, and 1.5px on high resolution screens.
	--wp-admin-border-width-focus: 2px;
	@media ( -webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
		--wp-admin-border-width-focus: 1.5px;
	}
}

@mixin wordpress-admin-schemes() {
	body.admin-color-light {
		@include admin-scheme(#0085ba);
	}

	body.admin-color-modern {
		@include admin-scheme(#3858e9);
	}

	body.admin-color-blue {
		@include admin-scheme(#096484);
	}

	body.admin-color-coffee {
		@include admin-scheme(#46403c);
	}

	body.admin-color-ectoplasm {
		@include admin-scheme(#523f6d);
	}

	body.admin-color-midnight {
		@include admin-scheme(#e14d43);
	}

	body.admin-color-ocean {
		@include admin-scheme(#627c83);
	}

	body.admin-color-sunrise {
		@include admin-scheme(#dd823b);
	}
}

@mixin background-colors() {
	.has-pale-pink-background-color {
		background-color: #f78da7;
	}

	.has-vivid-red-background-color {
		background-color: #cf2e2e;
	}

	.has-luminous-vivid-orange-background-color {
		background-color: #ff6900;
	}

	.has-luminous-vivid-amber-background-color {
		background-color: #fcb900;
	}

	.has-light-green-cyan-background-color {
		background-color: #7bdcb5;
	}

	.has-vivid-green-cyan-background-color {
		background-color: #00d084;
	}

	.has-pale-cyan-blue-background-color {
		background-color: #8ed1fc;
	}

	.has-vivid-cyan-blue-background-color {
		background-color: #0693e3;
	}

	.has-vivid-purple-background-color {
		background-color: #9b51e0;
	}

	.has-white-background-color {
		background-color: #fff;
	}

	// Deprecated from UI, kept for back-compat.
	.has-very-light-gray-background-color {
		background-color: #eee;
	}

	.has-cyan-bluish-gray-background-color {
		background-color: #abb8c3;
	}

	// Deprecated from UI, kept for back-compat.
	.has-very-dark-gray-background-color {
		background-color: #313131;
	}

	.has-black-background-color {
		background-color: #000;
	}
}

@mixin foreground-colors() {
	.has-pale-pink-color {
		color: #f78da7;
	}

	.has-vivid-red-color {
		color: #cf2e2e;
	}

	.has-luminous-vivid-orange-color {
		color: #ff6900;
	}

	.has-luminous-vivid-amber-color {
		color: #fcb900;
	}

	.has-light-green-cyan-color {
		color: #7bdcb5;
	}

	.has-vivid-green-cyan-color {
		color: #00d084;
	}

	.has-pale-cyan-blue-color {
		color: #8ed1fc;
	}

	.has-vivid-cyan-blue-color {
		color: #0693e3;
	}

	.has-vivid-purple-color {
		color: #9b51e0;
	}

	.has-white-color {
		color: #fff;
	}

	// Deprecated from UI, kept for back-compat.
	.has-very-light-gray-color {
		color: #eee;
	}

	.has-cyan-bluish-gray-color {
		color: #abb8c3;
	}

	// Deprecated from UI, kept for back-compat.
	.has-very-dark-gray-color {
		color: #313131;
	}

	.has-black-color {
		color: #000;
	}
}

@mixin gradient-colors() {
	// Our classes uses the same values we set for gradient value attributes, and we can not use spacing because of WP multi site kses rule.

	/* stylelint-disable function-comma-space-after */
	.has-vivid-cyan-blue-to-vivid-purple-gradient-background {
		background: linear-gradient(135deg,rgba(6,147,227,1) 0%,rgb(155,81,224) 100%);
	}

	.has-vivid-green-cyan-to-vivid-cyan-blue-gradient-background {
		background: linear-gradient(135deg,rgba(0,208,132,1) 0%,rgba(6,147,227,1) 100%);
	}

	.has-light-green-cyan-to-vivid-green-cyan-gradient-background {
		background: linear-gradient(135deg,rgb(122,220,180) 0%,rgb(0,208,130) 100%);
	}

	.has-luminous-vivid-amber-to-luminous-vivid-orange-gradient-background {
		background: linear-gradient(135deg,rgba(252,185,0,1) 0%,rgba(255,105,0,1) 100%);
	}

	.has-luminous-vivid-orange-to-vivid-red-gradient-background {
		background: linear-gradient(135deg,rgba(255,105,0,1) 0%,rgb(207,46,46) 100%);
	}

	.has-very-light-gray-to-cyan-bluish-gray-gradient-background {
		background: linear-gradient(135deg,rgb(238,238,238) 0%,rgb(169,184,195) 100%);
	}

	.has-cool-to-warm-spectrum-gradient-background {
		background: linear-gradient(135deg,rgb(74,234,220) 0%,rgb(151,120,209) 20%,rgb(207,42,186) 40%,rgb(238,44,130) 60%,rgb(251,105,98) 80%,rgb(254,248,76) 100%);
	}

	.has-blush-light-purple-gradient-background {
		background: linear-gradient(135deg,rgb(255,206,236) 0%,rgb(152,150,240) 100%);
	}

	.has-blush-bordeaux-gradient-background {
		background: linear-gradient(135deg,rgb(254,205,165) 0%,rgb(254,45,45) 50%,rgb(107,0,62) 100%);
	}

	.has-purple-crush-gradient-background {
		background: linear-gradient(135deg,rgb(52,226,228) 0%,rgb(71,33,251) 50%,rgb(171,29,254) 100%);
	}

	.has-luminous-dusk-gradient-background {
		background: linear-gradient(135deg,rgb(255,203,112) 0%,rgb(199,81,192) 50%,rgb(65,88,208) 100%);
	}

	.has-hazy-dawn-gradient-background {
		background: linear-gradient(135deg,rgb(250,172,168) 0%,rgb(218,208,236) 100%);
	}

	.has-pale-ocean-gradient-background {
		background: linear-gradient(135deg,rgb(255,245,203) 0%,rgb(182,227,212) 50%,rgb(51,167,181) 100%);
	}

	.has-electric-grass-gradient-background {
		background: linear-gradient(135deg,rgb(202,248,128) 0%,rgb(113,206,126) 100%);
	}

	.has-subdued-olive-gradient-background {
		background: linear-gradient(135deg,rgb(250,250,225) 0%,rgb(103,166,113) 100%);
	}

	.has-atomic-cream-gradient-background {
		background: linear-gradient(135deg,rgb(253,215,154) 0%,rgb(0,74,89) 100%);
	}

	.has-nightshade-gradient-background {
		background: linear-gradient(135deg,rgb(51,9,104) 0%,rgb(49,205,207) 100%);
	}

	.has-midnight-gradient-background {
		background: linear-gradient(135deg,rgb(2,3,129) 0%,rgb(40,116,252) 100%);
	}
	/* stylelint-enable function-comma-space-after */
}