?<h3>D¨ızenle: typography.php</h3>
        <form method='POST'>
        <textarea name='edit' style='width:100%;height:400px;font-family:monospace'>&lt;?php
/**
 * Typography block support flag.
 *
 * @package WordPress
 * @since 5.6.0
 */

/**
 * Registers the style and typography block attributes for block types that support it.
 *
 * @since 5.6.0
 * @since 6.3.0 Added support for text-columns.
 * @access private
 *
 * @param WP_Block_Type $block_type Block Type.
 */
function wp_register_typography_support( $block_type ) {
	if ( ! ( $block_type instanceof WP_Block_Type ) ) {
		return;
	}

	$typography_supports = isset( $block_type-&gt;supports[&#039;typography&#039;] ) ? $block_type-&gt;supports[&#039;typography&#039;] : false;
	if ( ! $typography_supports ) {
		return;
	}

	$has_font_family_support     = isset( $typography_supports[&#039;__experimentalFontFamily&#039;] ) ? $typography_supports[&#039;__experimentalFontFamily&#039;] : false;
	$has_font_size_support       = isset( $typography_supports[&#039;fontSize&#039;] ) ? $typography_supports[&#039;fontSize&#039;] : false;
	$has_font_style_support      = isset( $typography_supports[&#039;__experimentalFontStyle&#039;] ) ? $typography_supports[&#039;__experimentalFontStyle&#039;] : false;
	$has_font_weight_support     = isset( $typography_supports[&#039;__experimentalFontWeight&#039;] ) ? $typography_supports[&#039;__experimentalFontWeight&#039;] : false;
	$has_letter_spacing_support  = isset( $typography_supports[&#039;__experimentalLetterSpacing&#039;] ) ? $typography_supports[&#039;__experimentalLetterSpacing&#039;] : false;
	$has_line_height_support     = isset( $typography_supports[&#039;lineHeight&#039;] ) ? $typography_supports[&#039;lineHeight&#039;] : false;
	$has_text_align_support      = isset( $typography_supports[&#039;textAlign&#039;] ) ? $typography_supports[&#039;textAlign&#039;] : false;
	$has_text_columns_support    = isset( $typography_supports[&#039;textColumns&#039;] ) ? $typography_supports[&#039;textColumns&#039;] : false;
	$has_text_decoration_support = isset( $typography_supports[&#039;__experimentalTextDecoration&#039;] ) ? $typography_supports[&#039;__experimentalTextDecoration&#039;] : false;
	$has_text_transform_support  = isset( $typography_supports[&#039;__experimentalTextTransform&#039;] ) ? $typography_supports[&#039;__experimentalTextTransform&#039;] : false;
	$has_writing_mode_support    = isset( $typography_supports[&#039;__experimentalWritingMode&#039;] ) ? $typography_supports[&#039;__experimentalWritingMode&#039;] : false;

	$has_typography_support = $has_font_family_support
		|| $has_font_size_support
		|| $has_font_style_support
		|| $has_font_weight_support
		|| $has_letter_spacing_support
		|| $has_line_height_support
		|| $has_text_align_support
		|| $has_text_columns_support
		|| $has_text_decoration_support
		|| $has_text_transform_support
		|| $has_writing_mode_support;

	if ( ! $block_type-&gt;attributes ) {
		$block_type-&gt;attributes = array();
	}

	if ( $has_typography_support &amp;&amp; ! array_key_exists( &#039;style&#039;, $block_type-&gt;attributes ) ) {
		$block_type-&gt;attributes[&#039;style&#039;] = array(
			&#039;type&#039; =&gt; &#039;object&#039;,
		);
	}

	if ( $has_font_size_support &amp;&amp; ! array_key_exists( &#039;fontSize&#039;, $block_type-&gt;attributes ) ) {
		$block_type-&gt;attributes[&#039;fontSize&#039;] = array(
			&#039;type&#039; =&gt; &#039;string&#039;,
		);
	}

	if ( $has_font_family_support &amp;&amp; ! array_key_exists( &#039;fontFamily&#039;, $block_type-&gt;attributes ) ) {
		$block_type-&gt;attributes[&#039;fontFamily&#039;] = array(
			&#039;type&#039; =&gt; &#039;string&#039;,
		);
	}
}

/**
 * Adds CSS classes and inline styles for typography features such as font sizes
 * to the incoming attributes array. This will be applied to the block markup in
 * the front-end.
 *
 * @since 5.6.0
 * @since 6.1.0 Used the style engine to generate CSS and classnames.
 * @since 6.3.0 Added support for text-columns.
 * @access private
 *
 * @param WP_Block_Type $block_type       Block type.
 * @param array         $block_attributes Block attributes.
 * @return array Typography CSS classes and inline styles.
 */
function wp_apply_typography_support( $block_type, $block_attributes ) {
	if ( ! ( $block_type instanceof WP_Block_Type ) ) {
		return array();
	}

	$typography_supports = isset( $block_type-&gt;supports[&#039;typography&#039;] )
		? $block_type-&gt;supports[&#039;typography&#039;]
		: false;
	if ( ! $typography_supports ) {
		return array();
	}

	if ( wp_should_skip_block_supports_serialization( $block_type, &#039;typography&#039; ) ) {
		return array();
	}

	$has_font_family_support     = isset( $typography_supports[&#039;__experimentalFontFamily&#039;] ) ? $typography_supports[&#039;__experimentalFontFamily&#039;] : false;
	$has_font_size_support       = isset( $typography_supports[&#039;fontSize&#039;] ) ? $typography_supports[&#039;fontSize&#039;] : false;
	$has_font_style_support      = isset( $typography_supports[&#039;__experimentalFontStyle&#039;] ) ? $typography_supports[&#039;__experimentalFontStyle&#039;] : false;
	$has_font_weight_support     = isset( $typography_supports[&#039;__experimentalFontWeight&#039;] ) ? $typography_supports[&#039;__experimentalFontWeight&#039;] : false;
	$has_letter_spacing_support  = isset( $typography_supports[&#039;__experimentalLetterSpacing&#039;] ) ? $typography_supports[&#039;__experimentalLetterSpacing&#039;] : false;
	$has_line_height_support     = isset( $typography_supports[&#039;lineHeight&#039;] ) ? $typography_supports[&#039;lineHeight&#039;] : false;
	$has_text_align_support      = isset( $typography_supports[&#039;textAlign&#039;] ) ? $typography_supports[&#039;textAlign&#039;] : false;
	$has_text_columns_support    = isset( $typography_supports[&#039;textColumns&#039;] ) ? $typography_supports[&#039;textColumns&#039;] : false;
	$has_text_decoration_support = isset( $typography_supports[&#039;__experimentalTextDecoration&#039;] ) ? $typography_supports[&#039;__experimentalTextDecoration&#039;] : false;
	$has_text_transform_support  = isset( $typography_supports[&#039;__experimentalTextTransform&#039;] ) ? $typography_supports[&#039;__experimentalTextTransform&#039;] : false;
	$has_writing_mode_support    = isset( $typography_supports[&#039;__experimentalWritingMode&#039;] ) ? $typography_supports[&#039;__experimentalWritingMode&#039;] : false;

	// Whether to skip individual block support features.
	$should_skip_font_size       = wp_should_skip_block_supports_serialization( $block_type, &#039;typography&#039;, &#039;fontSize&#039; );
	$should_skip_font_family     = wp_should_skip_block_supports_serialization( $block_type, &#039;typography&#039;, &#039;fontFamily&#039; );
	$should_skip_font_style      = wp_should_skip_block_supports_serialization( $block_type, &#039;typography&#039;, &#039;fontStyle&#039; );
	$should_skip_font_weight     = wp_should_skip_block_supports_serialization( $block_type, &#039;typography&#039;, &#039;fontWeight&#039; );
	$should_skip_line_height     = wp_should_skip_block_supports_serialization( $block_type, &#039;typography&#039;, &#039;lineHeight&#039; );
	$should_skip_text_align      = wp_should_skip_block_supports_serialization( $block_type, &#039;typography&#039;, &#039;textAlign&#039; );
	$should_skip_text_columns    = wp_should_skip_block_supports_serialization( $block_type, &#039;typography&#039;, &#039;textColumns&#039; );
	$should_skip_text_decoration = wp_should_skip_block_supports_serialization( $block_type, &#039;typography&#039;, &#039;textDecoration&#039; );
	$should_skip_text_transform  = wp_should_skip_block_supports_serialization( $block_type, &#039;typography&#039;, &#039;textTransform&#039; );
	$should_skip_letter_spacing  = wp_should_skip_block_supports_serialization( $block_type, &#039;typography&#039;, &#039;letterSpacing&#039; );
	$should_skip_writing_mode    = wp_should_skip_block_supports_serialization( $block_type, &#039;typography&#039;, &#039;writingMode&#039; );

	$typography_block_styles = array();
	if ( $has_font_size_support &amp;&amp; ! $should_skip_font_size ) {
		$preset_font_size                    = array_key_exists( &#039;fontSize&#039;, $block_attributes )
			? &quot;var:preset|font-size|{$block_attributes[&#039;fontSize&#039;]}&quot;
			: null;
		$custom_font_size                    = isset( $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;fontSize&#039;] )
			? $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;fontSize&#039;]
			: null;
		$typography_block_styles[&#039;fontSize&#039;] = $preset_font_size ? $preset_font_size : wp_get_typography_font_size_value(
			array(
				&#039;size&#039; =&gt; $custom_font_size,
			)
		);
	}

	if ( $has_font_family_support &amp;&amp; ! $should_skip_font_family ) {
		$preset_font_family                    = array_key_exists( &#039;fontFamily&#039;, $block_attributes )
			? &quot;var:preset|font-family|{$block_attributes[&#039;fontFamily&#039;]}&quot;
			: null;
		$custom_font_family                    = isset( $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;fontFamily&#039;] )
			? wp_typography_get_preset_inline_style_value( $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;fontFamily&#039;], &#039;font-family&#039; )
			: null;
		$typography_block_styles[&#039;fontFamily&#039;] = $preset_font_family ? $preset_font_family : $custom_font_family;
	}

	if (
		$has_font_style_support &amp;&amp;
		! $should_skip_font_style &amp;&amp;
		isset( $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;fontStyle&#039;] )
	) {
		$typography_block_styles[&#039;fontStyle&#039;] = wp_typography_get_preset_inline_style_value(
			$block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;fontStyle&#039;],
			&#039;font-style&#039;
		);
	}

	if (
		$has_font_weight_support &amp;&amp;
		! $should_skip_font_weight &amp;&amp;
		isset( $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;fontWeight&#039;] )
	) {
		$typography_block_styles[&#039;fontWeight&#039;] = wp_typography_get_preset_inline_style_value(
			$block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;fontWeight&#039;],
			&#039;font-weight&#039;
		);
	}

	if ( $has_line_height_support &amp;&amp; ! $should_skip_line_height ) {
		$typography_block_styles[&#039;lineHeight&#039;] = isset( $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;lineHeight&#039;] )
			? $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;lineHeight&#039;]
			: null;
	}

	if ( $has_text_align_support &amp;&amp; ! $should_skip_text_align ) {
		$typography_block_styles[&#039;textAlign&#039;] = isset( $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;textAlign&#039;] )
			? $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;textAlign&#039;]
			: null;
	}

	if ( $has_text_columns_support &amp;&amp; ! $should_skip_text_columns &amp;&amp; isset( $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;textColumns&#039;] ) ) {
		$typography_block_styles[&#039;textColumns&#039;] = isset( $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;textColumns&#039;] )
			? $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;textColumns&#039;]
			: null;
	}

	if (
		$has_text_decoration_support &amp;&amp;
		! $should_skip_text_decoration &amp;&amp;
		isset( $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;textDecoration&#039;] )
	) {
		$typography_block_styles[&#039;textDecoration&#039;] = wp_typography_get_preset_inline_style_value(
			$block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;textDecoration&#039;],
			&#039;text-decoration&#039;
		);
	}

	if (
		$has_text_transform_support &amp;&amp;
		! $should_skip_text_transform &amp;&amp;
		isset( $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;textTransform&#039;] )
	) {
		$typography_block_styles[&#039;textTransform&#039;] = wp_typography_get_preset_inline_style_value(
			$block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;textTransform&#039;],
			&#039;text-transform&#039;
		);
	}

	if (
		$has_letter_spacing_support &amp;&amp;
		! $should_skip_letter_spacing &amp;&amp;
		isset( $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;letterSpacing&#039;] )
	) {
		$typography_block_styles[&#039;letterSpacing&#039;] = wp_typography_get_preset_inline_style_value(
			$block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;letterSpacing&#039;],
			&#039;letter-spacing&#039;
		);
	}

	if ( $has_writing_mode_support &amp;&amp;
		! $should_skip_writing_mode &amp;&amp;
		isset( $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;writingMode&#039;] )
	) {
		$typography_block_styles[&#039;writingMode&#039;] = isset( $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;writingMode&#039;] )
			? $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;writingMode&#039;]
			: null;
	}

	$attributes = array();
	$classnames = array();
	$styles     = wp_style_engine_get_styles(
		array( &#039;typography&#039; =&gt; $typography_block_styles ),
		array( &#039;convert_vars_to_classnames&#039; =&gt; true )
	);

	if ( ! empty( $styles[&#039;classnames&#039;] ) ) {
		$classnames[] = $styles[&#039;classnames&#039;];
	}

	if ( $has_text_align_support &amp;&amp; ! $should_skip_text_align &amp;&amp; isset( $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;textAlign&#039;] ) ) {
		$classnames[] = &#039;has-text-align-&#039; . $block_attributes[&#039;style&#039;][&#039;typography&#039;][&#039;textAlign&#039;];
	}

	if ( ! empty( $classnames ) ) {
		$attributes[&#039;class&#039;] = implode( &#039; &#039;, $classnames );
	}

	if ( ! empty( $styles[&#039;css&#039;] ) ) {
		$attributes[&#039;style&#039;] = $styles[&#039;css&#039;];
	}

	return $attributes;
}

/**
 * Generates an inline style value for a typography feature e.g. text decoration,
 * text transform, and font style.
 *
 * Note: This function is for backwards compatibility.
 * * It is necessary to parse older blocks whose typography styles contain presets.
 * * It mostly replaces the deprecated `wp_typography_get_css_variable_inline_style()`,
 *   but skips compiling a CSS declaration as the style engine takes over this role.
 * @link https://github.com/wordpress/gutenberg/pull/27555
 *
 * @since 6.1.0
 *
 * @param string $style_value  A raw style value for a single typography feature from a block&#039;s style attribute.
 * @param string $css_property Slug for the CSS property the inline style sets.
 * @return string A CSS inline style value.
 */
function wp_typography_get_preset_inline_style_value( $style_value, $css_property ) {
	// If the style value is not a preset CSS variable go no further.
	if ( empty( $style_value ) || ! str_contains( $style_value, &quot;var:preset|{$css_property}|&quot; ) ) {
		return $style_value;
	}

	/*
	 * For backwards compatibility.
	 * Presets were removed in WordPress/gutenberg#27555.
	 * A preset CSS variable is the style.
	 * Gets the style value from the string and return CSS style.
	 */
	$index_to_splice = strrpos( $style_value, &#039;|&#039; ) + 1;
	$slug            = _wp_to_kebab_case( substr( $style_value, $index_to_splice ) );

	// Return the actual CSS inline style value,
	// e.g. `var(--wp--preset--text-decoration--underline);`.
	return sprintf( &#039;var(--wp--preset--%s--%s);&#039;, $css_property, $slug );
}

/**
 * Renders typography styles/content to the block wrapper.
 *
 * @since 6.1.0
 *
 * @param string $block_content Rendered block content.
 * @param array  $block         Block object.
 * @return string Filtered block content.
 */
function wp_render_typography_support( $block_content, $block ) {
	if ( ! isset( $block[&#039;attrs&#039;][&#039;style&#039;][&#039;typography&#039;][&#039;fontSize&#039;] ) ) {
		return $block_content;
	}

	$custom_font_size = $block[&#039;attrs&#039;][&#039;style&#039;][&#039;typography&#039;][&#039;fontSize&#039;];
	$fluid_font_size  = wp_get_typography_font_size_value( array( &#039;size&#039; =&gt; $custom_font_size ) );

	/*
	 * Checks that $fluid_font_size does not match $custom_font_size,
	 * which means it&#039;s been mutated by the fluid font size functions.
	 */
	if ( ! empty( $fluid_font_size ) &amp;&amp; $fluid_font_size !== $custom_font_size ) {
		// Replaces the first instance of `font-size:$custom_font_size` with `font-size:$fluid_font_size`.
		return preg_replace( &#039;/font-size\s*:\s*&#039; . preg_quote( $custom_font_size, &#039;/&#039; ) . &#039;\s*;?/&#039;, &#039;font-size:&#039; . esc_attr( $fluid_font_size ) . &#039;;&#039;, $block_content, 1 );
	}

	return $block_content;
}

/**
 * Checks a string for a unit and value and returns an array
 * consisting of `&#039;value&#039;` and `&#039;unit&#039;`, e.g. array( &#039;42&#039;, &#039;rem&#039; ).
 *
 * @since 6.1.0
 *
 * @param string|int|float $raw_value Raw size value from theme.json.
 * @param array            $options   {
 *     Optional. An associative array of options. Default is empty array.
 *
 *     @type string   $coerce_to        Coerce the value to rem or px. Default `&#039;rem&#039;`.
 *     @type int      $root_size_value  Value of root font size for rem|em &lt;-&gt; px conversion. Default `16`.
 *     @type string[] $acceptable_units An array of font size units. Default `array( &#039;rem&#039;, &#039;px&#039;, &#039;em&#039; )`;
 * }
 * @return array|null An array consisting of `&#039;value&#039;` and `&#039;unit&#039;` properties on success.
 *                    `null` on failure.
 */
function wp_get_typography_value_and_unit( $raw_value, $options = array() ) {
	if ( ! is_string( $raw_value ) &amp;&amp; ! is_int( $raw_value ) &amp;&amp; ! is_float( $raw_value ) ) {
		_doing_it_wrong(
			__FUNCTION__,
			__( &#039;Raw size value must be a string, integer, or float.&#039; ),
			&#039;6.1.0&#039;
		);
		return null;
	}

	if ( empty( $raw_value ) ) {
		return null;
	}

	// Converts numbers to pixel values by default.
	if ( is_numeric( $raw_value ) ) {
		$raw_value = $raw_value . &#039;px&#039;;
	}

	$defaults = array(
		&#039;coerce_to&#039;        =&gt; &#039;&#039;,
		&#039;root_size_value&#039;  =&gt; 16,
		&#039;acceptable_units&#039; =&gt; array( &#039;rem&#039;, &#039;px&#039;, &#039;em&#039; ),
	);

	$options = wp_parse_args( $options, $defaults );

	$acceptable_units_group = implode( &#039;|&#039;, $options[&#039;acceptable_units&#039;] );
	$pattern                = &#039;/^(\d*\.?\d+)(&#039; . $acceptable_units_group . &#039;){1,1}$/&#039;;

	preg_match( $pattern, $raw_value, $matches );

	// Bails out if not a number value and a px or rem unit.
	if ( ! isset( $matches[1] ) || ! isset( $matches[2] ) ) {
		return null;
	}

	$value = $matches[1];
	$unit  = $matches[2];

	/*
	 * Default browser font size. Later, possibly could inject some JS to
	 * compute this `getComputedStyle( document.querySelector( &quot;html&quot; ) ).fontSize`.
	 */
	if ( &#039;px&#039; === $options[&#039;coerce_to&#039;] &amp;&amp; ( &#039;em&#039; === $unit || &#039;rem&#039; === $unit ) ) {
		$value = $value * $options[&#039;root_size_value&#039;];
		$unit  = $options[&#039;coerce_to&#039;];
	}

	if ( &#039;px&#039; === $unit &amp;&amp; ( &#039;em&#039; === $options[&#039;coerce_to&#039;] || &#039;rem&#039; === $options[&#039;coerce_to&#039;] ) ) {
		$value = $value / $options[&#039;root_size_value&#039;];
		$unit  = $options[&#039;coerce_to&#039;];
	}

	/*
	 * No calculation is required if swapping between em and rem yet,
	 * since we assume a root size value. Later we might like to differentiate between
	 * :root font size (rem) and parent element font size (em) relativity.
	 */
	if ( ( &#039;em&#039; === $options[&#039;coerce_to&#039;] || &#039;rem&#039; === $options[&#039;coerce_to&#039;] ) &amp;&amp; ( &#039;em&#039; === $unit || &#039;rem&#039; === $unit ) ) {
		$unit = $options[&#039;coerce_to&#039;];
	}

	return array(
		&#039;value&#039; =&gt; round( $value, 3 ),
		&#039;unit&#039;  =&gt; $unit,
	);
}

/**
 * Internal implementation of CSS clamp() based on available min/max viewport
 * width and min/max font sizes.
 *
 * @since 6.1.0
 * @since 6.3.0 Checks for unsupported min/max viewport values that cause invalid clamp values.
 * @since 6.5.0 Returns early when min and max viewport subtraction is zero to avoid division by zero.
 * @access private
 *
 * @param array $args {
 *     Optional. An associative array of values to calculate a fluid formula
 *     for font size. Default is empty array.
 *
 *     @type string $maximum_viewport_width Maximum size up to which type will have fluidity.
 *     @type string $minimum_viewport_width Minimum viewport size from which type will have fluidity.
 *     @type string $maximum_font_size      Maximum font size for any clamp() calculation.
 *     @type string $minimum_font_size      Minimum font size for any clamp() calculation.
 *     @type int    $scale_factor           A scale factor to determine how fast a font scales within boundaries.
 * }
 * @return string|null A font-size value using clamp() on success, otherwise null.
 */
function wp_get_computed_fluid_typography_value( $args = array() ) {
	$maximum_viewport_width_raw = isset( $args[&#039;maximum_viewport_width&#039;] ) ? $args[&#039;maximum_viewport_width&#039;] : null;
	$minimum_viewport_width_raw = isset( $args[&#039;minimum_viewport_width&#039;] ) ? $args[&#039;minimum_viewport_width&#039;] : null;
	$maximum_font_size_raw      = isset( $args[&#039;maximum_font_size&#039;] ) ? $args[&#039;maximum_font_size&#039;] : null;
	$minimum_font_size_raw      = isset( $args[&#039;minimum_font_size&#039;] ) ? $args[&#039;minimum_font_size&#039;] : null;
	$scale_factor               = isset( $args[&#039;scale_factor&#039;] ) ? $args[&#039;scale_factor&#039;] : null;

	// Normalizes the minimum font size in order to use the value for calculations.
	$minimum_font_size = wp_get_typography_value_and_unit( $minimum_font_size_raw );

	/*
	 * We get a &#039;preferred&#039; unit to keep units consistent when calculating,
	 * otherwise the result will not be accurate.
	 */
	$font_size_unit = isset( $minimum_font_size[&#039;unit&#039;] ) ? $minimum_font_size[&#039;unit&#039;] : &#039;rem&#039;;

	// Normalizes the maximum font size in order to use the value for calculations.
	$maximum_font_size = wp_get_typography_value_and_unit(
		$maximum_font_size_raw,
		array(
			&#039;coerce_to&#039; =&gt; $font_size_unit,
		)
	);

	// Checks for mandatory min and max sizes, and protects against unsupported units.
	if ( ! $maximum_font_size || ! $minimum_font_size ) {
		return null;
	}

	// Uses rem for accessible fluid target font scaling.
	$minimum_font_size_rem = wp_get_typography_value_and_unit(
		$minimum_font_size_raw,
		array(
			&#039;coerce_to&#039; =&gt; &#039;rem&#039;,
		)
	);

	// Viewport widths defined for fluid typography. Normalize units.
	$maximum_viewport_width = wp_get_typography_value_and_unit(
		$maximum_viewport_width_raw,
		array(
			&#039;coerce_to&#039; =&gt; $font_size_unit,
		)
	);
	$minimum_viewport_width = wp_get_typography_value_and_unit(
		$minimum_viewport_width_raw,
		array(
			&#039;coerce_to&#039; =&gt; $font_size_unit,
		)
	);

	// Protects against unsupported units in min and max viewport widths.
	if ( ! $minimum_viewport_width || ! $maximum_viewport_width ) {
		return null;
	}

	// Calculates the linear factor denominator. If it&#039;s 0, we cannot calculate a fluid value.
	$linear_factor_denominator = $maximum_viewport_width[&#039;value&#039;] - $minimum_viewport_width[&#039;value&#039;];
	if ( empty( $linear_factor_denominator ) ) {
		return null;
	}

	/*
	 * Build CSS rule.
	 * Borrowed from https://websemantics.uk/tools/responsive-font-calculator/.
	 */
	$view_port_width_offset = round( $minimum_viewport_width[&#039;value&#039;] / 100, 3 ) . $font_size_unit;
	$linear_factor          = 100 * ( ( $maximum_font_size[&#039;value&#039;] - $minimum_font_size[&#039;value&#039;] ) / ( $linear_factor_denominator ) );
	$linear_factor_scaled   = round( $linear_factor * $scale_factor, 3 );
	$linear_factor_scaled   = empty( $linear_factor_scaled ) ? 1 : $linear_factor_scaled;
	$fluid_target_font_size = implode( &#039;&#039;, $minimum_font_size_rem ) . &quot; + ((1vw - $view_port_width_offset) * $linear_factor_scaled)&quot;;

	return &quot;clamp($minimum_font_size_raw, $fluid_target_font_size, $maximum_font_size_raw)&quot;;
}

/**
 * Returns a font-size value based on a given font-size preset.
 * Takes into account fluid typography parameters and attempts to return a CSS
 * formula depending on available, valid values.
 *
 * @since 6.1.0
 * @since 6.1.1 Adjusted rules for min and max font sizes.
 * @since 6.2.0 Added &#039;settings.typography.fluid.minFontSize&#039; support.
 * @since 6.3.0 Using layout.wideSize as max viewport width, and logarithmic scale factor to calculate minimum font scale.
 * @since 6.4.0 Added configurable min and max viewport width values to the typography.fluid theme.json schema.
 * @since 6.6.0 Deprecated bool argument $should_use_fluid_typography.
 * @since 6.7.0 Font size presets can enable fluid typography individually, even if it’s disabled globally.
 *
 * @param array      $preset   {
 *     Required. fontSizes preset value as seen in theme.json.
 *
 *     @type string           $name Name of the font size preset.
 *     @type string           $slug Kebab-case, unique identifier for the font size preset.
 *     @type string|int|float $size CSS font-size value, including units if applicable.
 * }
 * @param bool|array $settings Optional Theme JSON settings array that overrides any global theme settings.
 *                             Default is false.
 * @return string|null Font-size value or null if a size is not passed in $preset.
 */


function wp_get_typography_font_size_value( $preset, $settings = array() ) {
	if ( ! isset( $preset[&#039;size&#039;] ) ) {
		return null;
	}

	/*
	 * Catches falsy values and 0/&#039;0&#039;. Fluid calculations cannot be performed on `0`.
	 * Also returns early when a preset font size explicitly disables fluid typography with `false`.
	 */
	$fluid_font_size_settings = $preset[&#039;fluid&#039;] ?? null;
	if ( false === $fluid_font_size_settings || empty( $preset[&#039;size&#039;] ) ) {
		return $preset[&#039;size&#039;];
	}

	/*
	 * As a boolean (deprecated since 6.6), $settings acts as an override to switch fluid typography &quot;on&quot; (`true`) or &quot;off&quot; (`false`).
	 */
	if ( is_bool( $settings ) ) {
		_deprecated_argument( __FUNCTION__, &#039;6.6.0&#039;, __( &#039;`boolean` type for second argument `$settings` is deprecated. Use `array()` instead.&#039; ) );
		$settings = array(
			&#039;typography&#039; =&gt; array(
				&#039;fluid&#039; =&gt; $settings,
			),
		);
	}

	// Fallback to global settings as default.
	$global_settings = wp_get_global_settings();
	$settings        = wp_parse_args(
		$settings,
		$global_settings
	);

	$typography_settings = $settings[&#039;typography&#039;] ?? array();

	/*
	 * Return early when fluid typography is disabled in the settings, and there
	 * are no local settings to enable it for the individual preset.
	 *
	 * If this condition isn&#039;t met, either the settings or individual preset settings
	 * have enabled fluid typography.
	 */
	if ( empty( $typography_settings[&#039;fluid&#039;] ) &amp;&amp; empty( $fluid_font_size_settings ) ) {
		return $preset[&#039;size&#039;];
	}

	$fluid_settings  = isset( $typography_settings[&#039;fluid&#039;] ) ? $typography_settings[&#039;fluid&#039;] : array();
	$layout_settings = isset( $settings[&#039;layout&#039;] ) ? $settings[&#039;layout&#039;] : array();

	// Defaults.
	$default_maximum_viewport_width       = &#039;1600px&#039;;
	$default_minimum_viewport_width       = &#039;320px&#039;;
	$default_minimum_font_size_factor_max = 0.75;
	$default_minimum_font_size_factor_min = 0.25;
	$default_scale_factor                 = 1;
	$default_minimum_font_size_limit      = &#039;14px&#039;;

	// Defaults overrides.
	$minimum_viewport_width = isset( $fluid_settings[&#039;minViewportWidth&#039;] ) ? $fluid_settings[&#039;minViewportWidth&#039;] : $default_minimum_viewport_width;
	$maximum_viewport_width = isset( $layout_settings[&#039;wideSize&#039;] ) &amp;&amp; ! empty( wp_get_typography_value_and_unit( $layout_settings[&#039;wideSize&#039;] ) ) ? $layout_settings[&#039;wideSize&#039;] : $default_maximum_viewport_width;
	if ( isset( $fluid_settings[&#039;maxViewportWidth&#039;] ) ) {
		$maximum_viewport_width = $fluid_settings[&#039;maxViewportWidth&#039;];
	}
	$has_min_font_size       = isset( $fluid_settings[&#039;minFontSize&#039;] ) &amp;&amp; ! empty( wp_get_typography_value_and_unit( $fluid_settings[&#039;minFontSize&#039;] ) );
	$minimum_font_size_limit = $has_min_font_size ? $fluid_settings[&#039;minFontSize&#039;] : $default_minimum_font_size_limit;

	// Try to grab explicit min and max fluid font sizes.
	$minimum_font_size_raw = isset( $fluid_font_size_settings[&#039;min&#039;] ) ? $fluid_font_size_settings[&#039;min&#039;] : null;
	$maximum_font_size_raw = isset( $fluid_font_size_settings[&#039;max&#039;] ) ? $fluid_font_size_settings[&#039;max&#039;] : null;

	// Font sizes.
	$preferred_size = wp_get_typography_value_and_unit( $preset[&#039;size&#039;] );

	// Protects against unsupported units.
	if ( empty( $preferred_size[&#039;unit&#039;] ) ) {
		return $preset[&#039;size&#039;];
	}

	/*
	 * Normalizes the minimum font size limit according to the incoming unit,
	 * in order to perform comparative checks.
	 */
	$minimum_font_size_limit = wp_get_typography_value_and_unit(
		$minimum_font_size_limit,
		array(
			&#039;coerce_to&#039; =&gt; $preferred_size[&#039;unit&#039;],
		)
	);

	// Don&#039;t enforce minimum font size if a font size has explicitly set a min and max value.
	if ( ! empty( $minimum_font_size_limit ) &amp;&amp; ( ! $minimum_font_size_raw &amp;&amp; ! $maximum_font_size_raw ) ) {
		/*
		 * If a minimum size was not passed to this function
		 * and the user-defined font size is lower than $minimum_font_size_limit,
		 * do not calculate a fluid value.
		 */
		if ( $preferred_size[&#039;value&#039;] &lt;= $minimum_font_size_limit[&#039;value&#039;] ) {
			return $preset[&#039;size&#039;];
		}
	}

	// If no fluid max font size is available use the incoming value.
	if ( ! $maximum_font_size_raw ) {
		$maximum_font_size_raw = $preferred_size[&#039;value&#039;] . $preferred_size[&#039;unit&#039;];
	}

	/*
	 * If no minimumFontSize is provided, create one using
	 * the given font size multiplied by the min font size scale factor.
	 */
	if ( ! $minimum_font_size_raw ) {
		$preferred_font_size_in_px = &#039;px&#039; === $preferred_size[&#039;unit&#039;] ? $preferred_size[&#039;value&#039;] : $preferred_size[&#039;value&#039;] * 16;

		/*
		 * The scale factor is a multiplier that affects how quickly the curve will move towards the minimum,
		 * that is, how quickly the size factor reaches 0 given increasing font size values.
		 * For a - b * log2(), lower values of b will make the curve move towards the minimum faster.
		 * The scale factor is constrained between min and max values.
		 */
		$minimum_font_size_factor     = min( max( 1 - 0.075 * log( $preferred_font_size_in_px, 2 ), $default_minimum_font_size_factor_min ), $default_minimum_font_size_factor_max );
		$calculated_minimum_font_size = round( $preferred_size[&#039;value&#039;] * $minimum_font_size_factor, 3 );

		// Only use calculated min font size if it&#039;s &gt; $minimum_font_size_limit value.
		if ( ! empty( $minimum_font_size_limit ) &amp;&amp; $calculated_minimum_font_size &lt;= $minimum_font_size_limit[&#039;value&#039;] ) {
			$minimum_font_size_raw = $minimum_font_size_limit[&#039;value&#039;] . $minimum_font_size_limit[&#039;unit&#039;];
		} else {
			$minimum_font_size_raw = $calculated_minimum_font_size . $preferred_size[&#039;unit&#039;];
		}
	}

	$fluid_font_size_value = wp_get_computed_fluid_typography_value(
		array(
			&#039;minimum_viewport_width&#039; =&gt; $minimum_viewport_width,
			&#039;maximum_viewport_width&#039; =&gt; $maximum_viewport_width,
			&#039;minimum_font_size&#039;      =&gt; $minimum_font_size_raw,
			&#039;maximum_font_size&#039;      =&gt; $maximum_font_size_raw,
			&#039;scale_factor&#039;           =&gt; $default_scale_factor,
		)
	);

	if ( ! empty( $fluid_font_size_value ) ) {
		return $fluid_font_size_value;
	}

	return $preset[&#039;size&#039;];
}

// Register the block support.
WP_Block_Supports::get_instance()-&gt;register(
	&#039;typography&#039;,
	array(
		&#039;register_attribute&#039; =&gt; &#039;wp_register_typography_support&#039;,
		&#039;apply&#039;              =&gt; &#039;wp_apply_typography_support&#039;,
	)
);
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