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   1  <?php
   2  /**
   3   * Custom header implementation
   4   *
   5   * @link https://codex.wordpress.org/Custom_Headers
   6   *
   7   * @package WordPress
   8   * @subpackage Twenty_Seventeen
   9   * @since Twenty Seventeen 1.0
  10   */
  11  
  12  /**
  13   * Set up the WordPress core custom header feature.
  14   *
  15   * @uses twentyseventeen_header_style()
  16   */
  17  function twentyseventeen_custom_header_setup() {
  18  
  19      add_theme_support(
  20          'custom-header',
  21          /**
  22           * Filters Twenty Seventeen custom-header support arguments.
  23           *
  24           * @since Twenty Seventeen 1.0
  25           *
  26           * @param array $args {
  27           *     An array of custom-header support arguments.
  28           *
  29           *     @type string $default-image    Default image of the header.
  30           *     @type int    $width            Width in pixels of the custom header image. Default 954.
  31           *     @type int    $height           Height in pixels of the custom header image. Default 1300.
  32           *     @type string $flex-height      Flex support for height of header.
  33           *     @type string $video            Video support for header.
  34           *     @type string $wp-head-callback Callback function used to styles the header image and text
  35           *                                    displayed on the blog.
  36           * }
  37           */
  38          apply_filters(
  39              'twentyseventeen_custom_header_args',
  40              array(
  41                  'default-image'    => get_parent_theme_file_uri( '/assets/images/header.jpg' ),
  42                  'width'            => 2000,
  43                  'height'           => 1200,
  44                  'flex-height'      => true,
  45                  'video'            => true,
  46                  'wp-head-callback' => 'twentyseventeen_header_style',
  47              )
  48          )
  49      );
  50  
  51      register_default_headers(
  52          array(
  53              'default-image' => array(
  54                  'url'           => '%s/assets/images/header.jpg',
  55                  'thumbnail_url' => '%s/assets/images/header.jpg',
  56                  'description'   => __( 'Default Header Image', 'twentyseventeen' ),
  57              ),
  58          )
  59      );
  60  }
  61  add_action( 'after_setup_theme', 'twentyseventeen_custom_header_setup' );
  62  
  63  if ( ! function_exists( 'twentyseventeen_header_style' ) ) :
  64      /**
  65       * Styles the header image and text displayed on the blog.
  66       *
  67       * @see twentyseventeen_custom_header_setup().
  68       */
  69  	function twentyseventeen_header_style() {
  70          $header_text_color = get_header_textcolor();
  71  
  72          // If no custom options for text are set, let's bail.
  73          // get_header_textcolor() options: add_theme_support( 'custom-header' ) is default, hide text (returns 'blank') or any hex value.
  74          if ( get_theme_support( 'custom-header', 'default-text-color' ) === $header_text_color ) {
  75              return;
  76          }
  77  
  78          // If we get this far, we have custom styles. Let's do this.
  79          ?>
  80          <style id="twentyseventeen-custom-header-styles" type="text/css">
  81          <?php
  82          // Has the text been hidden?
  83          if ( 'blank' === $header_text_color ) :
  84              ?>
  85          .site-title,
  86          .site-description {
  87              position: absolute;
  88              clip: rect(1px, 1px, 1px, 1px);
  89          }
  90              <?php
  91              // If the user has set a custom color for the text use that.
  92          else :
  93              ?>
  94          .site-title a,
  95          .colors-dark .site-title a,
  96          .colors-custom .site-title a,
  97          body.has-header-image .site-title a,
  98          body.has-header-video .site-title a,
  99          body.has-header-image.colors-dark .site-title a,
 100          body.has-header-video.colors-dark .site-title a,
 101          body.has-header-image.colors-custom .site-title a,
 102          body.has-header-video.colors-custom .site-title a,
 103          .site-description,
 104          .colors-dark .site-description,
 105          .colors-custom .site-description,
 106          body.has-header-image .site-description,
 107          body.has-header-video .site-description,
 108          body.has-header-image.colors-dark .site-description,
 109          body.has-header-video.colors-dark .site-description,
 110          body.has-header-image.colors-custom .site-description,
 111          body.has-header-video.colors-custom .site-description {
 112              color: #<?php echo esc_attr( $header_text_color ); ?>;
 113          }
 114      <?php endif; ?>
 115      </style>
 116          <?php
 117      }
 118  endif; // End of twentyseventeen_header_style().
 119  
 120  /**
 121   * Customize video play/pause button in the custom header.
 122   *
 123   * @param array $settings Video settings.
 124   * @return array The filtered video settings.
 125   */
 126  function twentyseventeen_video_controls( $settings ) {
 127      /* translators: Hidden accessibility text. */
 128      $settings['l10n']['play'] = '<span class="screen-reader-text">' . __( 'Play background video', 'twentyseventeen' ) . '</span>' . twentyseventeen_get_svg( array( 'icon' => 'play' ) );
 129      /* translators: Hidden accessibility text. */
 130      $settings['l10n']['pause'] = '<span class="screen-reader-text">' . __( 'Pause background video', 'twentyseventeen' ) . '</span>' . twentyseventeen_get_svg( array( 'icon' => 'pause' ) );
 131      return $settings;
 132  }
 133  add_filter( 'header_video_settings', 'twentyseventeen_video_controls' );