@ckeditor/ckeditor5-theme-lark/theme/ckeditor5-ui/components/button/switchbutton.css

A bright theme for CKEditor 5.

/*
 * Copyright (c) 2003-2024, CKSource Holding sp. z o.o. All rights reserved.
 * For licensing, see LICENSE.md or https://ckeditor.com/legal/ckeditor-licensing-options
 */

@import "../../../mixins/_rounded.css";
@import "../../../mixins/_disabled.css";
@import "@ckeditor/ckeditor5-ui/theme/mixins/_dir.css";

/* Note: To avoid rendering issues (aliasing) but to preserve the responsive nature
of the component, floating–point numbers have been used which, for the default font size
(see: --ck-font-size-base), will generate simple integers. */
:root {
	/* 34px at 13px font-size */
	--ck-switch-button-toggle-width: 2.6153846154em;
	/* 14px at 13px font-size */
	--ck-switch-button-toggle-inner-size: calc(1.0769230769em + 1px);
	--ck-switch-button-translation: calc(
		var(--ck-switch-button-toggle-width) -
		var(--ck-switch-button-toggle-inner-size) -
		2px /* Border */
	);
	--ck-switch-button-inner-hover-shadow: 0 0 0 5px var(--ck-color-switch-button-inner-shadow);
}

.ck.ck-button.ck-switchbutton {
	/* Unlike a regular button, the switch button text color and background should never change.
	 * Changing toggle switch (background, outline) is enough to carry the information about the
	 * state of the entire component (https://github.com/ckeditor/ckeditor5/issues/12519)
	 */
	&, &:hover, &:focus, &:active, &.ck-on:hover, &.ck-on:focus, &.ck-on:active {
		color: inherit;
		background: transparent;
	}

	& .ck-button__label {
		@mixin ck-dir ltr {
			/* Separate the label from the switch */
			margin-right: calc(2 * var(--ck-spacing-large));
		}

		@mixin ck-dir rtl {
			/* Separate the label from the switch */
			margin-left: calc(2 * var(--ck-spacing-large));
		}
	}

	& .ck-button__toggle {
		@mixin ck-rounded-corners;

		@mixin ck-dir ltr {
			/* Make sure the toggle is always to the right as far as possible. */
			margin-left: auto;
		}

		@mixin ck-dir rtl {
			/* Make sure the toggle is always to the left as far as possible. */
			margin-right: auto;
		}

		/* Apply some smooth transition to the box-shadow and border. */
		/* Gently animate the background color of the toggle switch */
		transition: background 400ms ease, box-shadow .2s ease-in-out, outline .2s ease-in-out;
		border: 1px solid transparent;
		width: var(--ck-switch-button-toggle-width);
		background: var(--ck-color-switch-button-off-background);

		& .ck-button__toggle__inner {
			@mixin ck-rounded-corners {
				border-radius: calc(.5 * var(--ck-border-radius));
			}

			width: var(--ck-switch-button-toggle-inner-size);
			height: var(--ck-switch-button-toggle-inner-size);
			background: var(--ck-color-switch-button-inner-background);

			/* Gently animate the inner part of the toggle switch */
			transition: all 300ms ease;

			@media (prefers-reduced-motion: reduce) {
				transition: none;
			}
		}

		&:hover {
			background: var(--ck-color-switch-button-off-hover-background);

			& .ck-button__toggle__inner {
				box-shadow: var(--ck-switch-button-inner-hover-shadow);
			}
		}
	}

	&.ck-disabled .ck-button__toggle {
		@mixin ck-disabled;
	}

	/* Overriding default .ck-button:focus styles + an outline around the toogle */
	&:focus {
		border-color: transparent;
		outline: none;
		box-shadow: none;

		& .ck-button__toggle {
			box-shadow: 0 0 0 1px var(--ck-color-base-background), 0 0 0 5px var(--ck-color-focus-outer-shadow);
			outline-offset: 1px;
			outline: var(--ck-focus-ring);
		}
	}

	/* stylelint-disable-next-line no-descending-specificity */
	&.ck-on {
		& .ck-button__toggle {
			background: var(--ck-color-switch-button-on-background);

			&:hover {
				background: var(--ck-color-switch-button-on-hover-background);
			}

			& .ck-button__toggle__inner {
				/*
				* Move the toggle switch to the right. It will be animated.
				*/
				@mixin ck-dir ltr {
					transform: translateX( var( --ck-switch-button-translation ) );
				}

				@mixin ck-dir rtl {
					transform: translateX( calc( -1 * var( --ck-switch-button-translation ) ) );
				}
			}
		}
	}
}