WordPress/wp-content/themes/twentyseventeen/inc/custom-header.php

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<?php
/**
* Custom header implementation
*
* @link https://codex.wordpress.org/Custom_Headers
*
* @package WordPress
* @subpackage Twenty_Seventeen
* @since Twenty Seventeen 1.0
*/
/**
* Set up the WordPress core custom header feature.
*
* @uses twentyseventeen_header_style()
*/
function twentyseventeen_custom_header_setup() {
add_theme_support(
'custom-header',
/**
* Filters Twenty Seventeen custom-header support arguments.
*
* @since Twenty Seventeen 1.0
*
* @param array $args {
* An array of custom-header support arguments.
*
* @type string $default-image Default image of the header.
* @type int $width Width in pixels of the custom header image. Default 954.
* @type int $height Height in pixels of the custom header image. Default 1300.
* @type string $flex-height Flex support for height of header.
* @type string $video Video support for header.
* @type string $wp-head-callback Callback function used to styles the header image and text
* displayed on the blog.
* }
*/
apply_filters(
'twentyseventeen_custom_header_args',
array(
'default-image' => get_parent_theme_file_uri( '/assets/images/header.jpg' ),
'width' => 2000,
'height' => 1200,
'flex-height' => true,
'video' => true,
'wp-head-callback' => 'twentyseventeen_header_style',
)
)
);
register_default_headers(
array(
'default-image' => array(
'url' => '%s/assets/images/header.jpg',
'thumbnail_url' => '%s/assets/images/header.jpg',
'description' => __( 'Default Header Image', 'twentyseventeen' ),
),
)
);
}
add_action( 'after_setup_theme', 'twentyseventeen_custom_header_setup' );
if ( ! function_exists( 'twentyseventeen_header_style' ) ) :
/**
* Styles the header image and text displayed on the blog.
*
* @see twentyseventeen_custom_header_setup().
*/
function twentyseventeen_header_style() {
$header_text_color = get_header_textcolor();
// If no custom options for text are set, let's bail.
// get_header_textcolor() options: add_theme_support( 'custom-header' ) is default, hide text (returns 'blank') or any hex value.
if ( get_theme_support( 'custom-header', 'default-text-color' ) === $header_text_color ) {
return;
}
// If we get this far, we have custom styles. Let's do this.
?>
<style id="twentyseventeen-custom-header-styles" type="text/css">
<?php
// Has the text been hidden?
if ( 'blank' === $header_text_color ) :
?>
.site-title,
.site-description {
position: absolute;
clip: rect(1px, 1px, 1px, 1px);
}
<?php
// If the user has set a custom color for the text use that.
else :
?>
.site-title a,
.colors-dark .site-title a,
.colors-custom .site-title a,
body.has-header-image .site-title a,
body.has-header-video .site-title a,
body.has-header-image.colors-dark .site-title a,
body.has-header-video.colors-dark .site-title a,
body.has-header-image.colors-custom .site-title a,
body.has-header-video.colors-custom .site-title a,
.site-description,
.colors-dark .site-description,
.colors-custom .site-description,
body.has-header-image .site-description,
body.has-header-video .site-description,
body.has-header-image.colors-dark .site-description,
body.has-header-video.colors-dark .site-description,
body.has-header-image.colors-custom .site-description,
body.has-header-video.colors-custom .site-description {
color: #<?php echo esc_attr( $header_text_color ); ?>;
}
<?php endif; ?>
</style>
<?php
}
endif; // End of twentyseventeen_header_style().
/**
* Customize video play/pause button in the custom header.
*
* @param array $settings Video settings.
* @return array The filtered video settings.
*/
function twentyseventeen_video_controls( $settings ) {
$settings['l10n']['play'] = '<span class="screen-reader-text">' . __( 'Play background video', 'twentyseventeen' ) . '</span>' . twentyseventeen_get_svg( array( 'icon' => 'play' ) );
$settings['l10n']['pause'] = '<span class="screen-reader-text">' . __( 'Pause background video', 'twentyseventeen' ) . '</span>' . twentyseventeen_get_svg( array( 'icon' => 'pause' ) );
return $settings;
}
add_filter( 'header_video_settings', 'twentyseventeen_video_controls' );