esc_url( home_url( '/' ) ) ) ); } /** * Set the image property for all templates that display a single post object. * * Hooks into the "template_redirect" action. * * @since Duotone v2.0 */ public static function setup_single_post_template() { global $wp_query; if ( 0 == $wp_query->post_count ) return; if ( is_archive() || is_search() || is_404() ) return; self::$image = self::get_image_data(); self::set_themecolors(); add_action( 'wp_head', array( __class__, 'styles' ) ); } /** * Return an image tag for display in archive templates. * * @since Duotone v2.0 */ public static function get_archive_image() { $url = self::get_the_image_url_for_display(); $url = apply_filters( 'duotone_archive_image_url', $url, self::$image ); // VideoPress images don't support ImgPress if ( self::is_videopress_image( $url ) ) { $url = remove_query_arg( 'w', $url ); $url = remove_query_arg( 'h', $url ); } if ( ! empty( $url ) ) return ''; return ''; } /** * Return an image tag for display in templates that display a single post object. * * @since Duotone v2.0 */ public static function get_singular_image() { $url = self::get_the_image_url_for_display(); $url = apply_filters( 'duotone_singular_image_url', $url, self::$image ); if ( ! empty( $url ) ) { if ( self::is_videopress_image( $url ) ) { // It's a VideoPress image - replace with the video $html = self::get_videopress_html( $url ); if ( ! empty( $html ) ) return $html; } return ''; } return ''; } public static function is_videopress_image( $url ) { $vp = strpos( $url, 'http://videos.videopress.com/' ); $vps = strpos( $url, 'https://videos.files.wordpress.com/' ); return ( 0 === $vp || 0 === $vps ); } public static function get_videopress_html( $url ) { $matches = array(); preg_match( '#^http(s)?://videos.(files.word|video)press.com/([[:alnum:]]+)/#i', $url, $matches ); if ( empty( $matches[3] ) ) return ''; $guid = $matches[3] ; $style = ''; return $style . do_shortcode( "[wpvideo $guid]" ); } /** * Get the image url for display in a template. * * Since the url is being plucked from the post_content we * need to ensure that it is only displayed where appropriate. * * @since Duotone v2.0 */ private static function get_the_image_url_for_display() { if ( post_password_required() ) return ''; if ( is_home() || is_singular() ) { $image = self::$image; $size = 'duotone_singular'; } else { $image = self::get_image_data( 0, false ); $size = 'duotone_archive'; } $url = ''; if ( ! empty( $image['image_id'] ) ) { $src = wp_get_attachment_image_src( $image['image_id'], $size ); if ( isset( $src[0] ) ) $url = $src[0]; } if ( empty( $url ) && ! empty( $image['url'] ) ) $url = $image['url']; return $url; } /** * Remove the first image from the post_content. * * Hooks into the "the_content" filter as early as possible. */ public static function content_setup( $entry ) { if ( is_feed() ) return $entry; if ( 0 != get_query_var( 'page' ) ) return $entry; /* Remove first image tag. */ $count = 0; $entry = preg_replace( '/]*src=(\"|\').+?(\1)[^>]*\/*>/','', $entry, 1, $count ); // If no image was removed, remove the first video instead if ( ! $count ) { $regex = get_shortcode_regex( array( 'wpvideo', 'videopress' ) ); $entry = preg_replace( '/'. $regex .'/s','', $entry, 1, $count ); } $entry = wp_kses_post( $entry ); return $entry; } /** * Adjust the main query. * * Show only a single post where is_home() returns true. * Show 27 posts in archive and search results. * * Hooks into the "request" action. * * @since Duotone v2.0 */ public static function modify_request( $request ) { $q = new WP_Query(); $q->parse_query( $request ); if ( $q->is_home() ) { $request['posts_per_page'] = 1; $request['post__not_in'] = get_option( 'sticky_posts' ); } else if ( $q->is_archive() || $q->is_search() ) { $request['posts_per_page'] = 27; } return $request; } /** * @since Duotone v2.0 */ public static function styles() { extract( self::$image ); $background_color = get_background_color(); if ( empty( $background_color ) && isset( $background['+2'] ) ) $background_color = $background['+2']; ?> ]*src=(\"|\')(.+?)(\1)[^>]*\/*>/i', $content, $matches ) ) return $matches[2]; if( preg_match( '/\[(wpvideo|videopress) ([[:alnum:]]+)/', $content, $matches ) && function_exists( 'video_image_url_by_guid' ) ) return video_image_url_by_guid( $matches[2] ); return ''; } /** * Save Image Data. * * @since Duotone v2.0 */ public static function save_image_data( $ID ) { $post = get_post( $ID ); $image_url = self::scrape_first_image_url( $post->post_content ); /* * If there is no img tag in the post_content we will * clear all image related post meta data and return early. */ if ( empty( $image_url ) ) { self::flush_image_data( $ID ); return false; } $saved = self::get_image_data( $ID ); if ( $image_url == $saved['url'] && ! empty( $saved['image_url'] ) ) return false; self::flush_image_data( $ID ); include_once( get_template_directory() . '/inc/csscolor.php' ); $color = new Duotone_CSS_Color( self::best_color( $image_url ) ); $image_id = self::get_the_image_id( $image_url, $ID ); if ( ! empty( $image_id ) ) { $image_meta = wp_get_attachment_metadata( $image_id ); $image_meta = wp_parse_args( $image_meta, array( 'width' => 0, 'height' => 0, ) ); $size = array( $image_meta['width'], $image_meta['height'] ); } else { $image_path = self::get_image_path( $image_url ); $size = self::is_file( $image_path ) ? getimagesize( $image_path ) : array(); } $is_vertical = ( self::is_vertical( $size ) ) ? 1 : 0; $post_meta = array( 'background' => $color->bg, 'foreground' => $color->fg, 'url' => esc_url_raw( $image_url ), 'is_vertical' => absint( $is_vertical ), 'image_id' => absint( $image_id ), ); add_post_meta( $ID, '_duotone', $post_meta ); } /** * Return the ID of the first image in a post. * * First check to see if the image is already stored in * the Media Library. If so, this ID will be returned. * * If the image cannot be found in the Media Library it * will be added as an attachment to the post represented * by the $ID parameter. * * Always return zero on WordPress.com. * * @uses Duotone::sideload_image() * * @param string $url Full url to the image. * @param int $ID Post ID. * @return int Image $ID. * * @access private * @since Duotone v2.0 */ private static function get_the_image_id( $url, $ID ) { $image_id = 0; if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) return $image_id; $cached = get_children( array( 'numberposts' => 1, 'meta_compare' => 'LIKE', 'meta_key' => '_wp_attachment_metadata', 'meta_value' => basename( $url ), 'post_mime_type' => 'image', 'post_parent' => null, 'post_status' => null, 'post_type' => 'attachment', ) ); if ( $cached ) { $cached = array_shift( $cached ); $image_id = $cached->ID; } else { $image_id = self::sideload_image( $url, $ID ); } return $image_id; } /** * Download an image from the specified URL and attach it to a post. * * This is a reworked version of WordPress core function * media_sideload_image(). The core version returns a html * tag representing the image but Duotone requires the image's * ID to be returned. * * @param string $file The URL of the image to download * @param int $ID The post ID the media is to be associated with * @param string $desc Optional. Description of the image * @return string|WP_Error Populated HTML img tag on success * * @since Duotone v2.0 */ private function sideload_image( $file, $ID, $desc = null ) { $file_array = []; if ( empty( $file ) ) return 0; /* Download file to temp location. */ $tmp = download_url( $file ); /* fix file filename for query strings. */ preg_match( '/[^\?]+\.(jpg|JPG|jpe|JPE|jpeg|JPEG|gif|GIF|png|PNG)/', $file, $matches ); /* Set variables for storage */ $file_array['name'] = basename( $matches[0] ); $file_array['tmp_name'] = $tmp; /* If error storing temporarily, unlink */ if ( is_wp_error( $tmp ) ) { @unlink( $file_array['tmp_name'] ); $file_array['tmp_name'] = ''; } /* do the validation and storage stuff */ $id = media_handle_sideload( $file_array, $ID, $desc ); /* Image cound not be stored. Delete the temporary image. */ if ( is_wp_error( $id ) ) { @unlink( $file_array['tmp_name'] ); return 0; } return $id; } /** * Get Image Data. * * Retrives postmeta from database, merged with default values. * This function cas the potential to be pretty resource intensive * and therefore should only be called once per document. * * @since Duotone v2.0 */ public static function get_image_data( $ID = 0, $scan_image = true ) { $defaults = array( 'background' => array(), 'foreground' => array(), 'url' => '', 'is_vertical' => 0, 'image_id' => 0, ); if ( empty( $ID ) ) $ID = get_the_ID(); $meta = get_post_meta( $ID, '_duotone', true ); /* * COMPAT: Allow deprecated post meta to override defaults. */ if ( empty( $meta ) ) $defaults = wp_parse_args( self::get_deprecated_meta( $ID ), $defaults ); /* * Scrape first image if no value for url is stored. */ if ( empty( $defaults['url'] ) ) { $current_post = get_post( $ID ); $scraped = self::scrape_first_image_url( $current_post->post_content ); if ( ! empty( $scraped ) ) $defaults['url'] = $scraped; } /* * Return early in cases where multiple images are * displayed: search, category, archives. */ if ( ! $scan_image ) { $data = wp_parse_args( $meta, $defaults ); return $data; } /* * Generate Colors. */ if ( ! empty( $defaults['url'] ) && ( empty( $defaults['background'] ) || empty( $defaults['background'] ) ) ) { include_once( get_template_directory() . '/inc/csscolor.php' ); $path = self::get_image_path( $defaults['url'] ); $colors = new Duotone_CSS_Color( self::best_color( $path ) ); if ( empty( $defaults['background'] ) ) $defaults['background'] = $colors->bg; if ( empty( $defaults['foreground'] ) ) $defaults['foreground'] = $colors->fg; } /* * Still no colors? Use default values. */ if ( empty( $defaults['background'] ) ) $defaults['background'] = self::get_colors( 'background' ); if ( empty( $defaults['foreground'] ) ) $defaults['foreground'] = self::get_colors( 'foreground' ); if ( ! isset( $meta['is_vertical'] ) ) { $image_path = self::get_image_path( $defaults['url'] ); $size = self::is_file( $image_path ) ? getimagesize( $image_path ) : array(); if ( self::is_vertical( $size ) ) $defaults['is_vertical'] = 1; } $data = wp_parse_args( $meta, $defaults ); return $data; } /** * Checks whether a file exists. Accounts for both files and URLs. * * @param string $file Path or URL to file. * @return boolean Whether file exists. */ private static function is_file( $file ) { if ( is_file( $file ) ) { return true; } else { $response = wp_remote_head( $file ); return 200 == wp_remote_retrieve_response_code( $response ); } } public static function get_image_path( $url ) { $uploads = wp_get_upload_dir(); $path = str_replace( $uploads['baseurl'], $uploads['basedir'], $url ); list( $path ) = explode( '?', $path ); return $path; } /** * Get deprecated meta data stored by Duotone v1.1. * * @param int $ID Unique id of a WordPress post object. * @return array * * @since Duotone v2.0 */ private static function get_deprecated_meta( $ID ) { $defaults = []; $meta = array(); $background = get_post_meta( $ID, 'image_colors_bg', true ); if ( is_array( $background ) ) $meta['background'] = $background; $foreground = get_post_meta( $ID, 'image_colors_fg', true ); if ( is_array( $foreground ) ) $meta['foreground'] = $foreground; $url = get_post_meta( $ID, 'url', true ); if ( ! empty( $url ) ) $meta['url'] = esc_url_raw( $url ); $size = get_post_meta( $ID, 'image_size', true ); if ( self::is_vertical( $size ) ) $defaults['is_vertical'] = 1; return $meta; } /** * Get colors. * * The color arrays returned by Duotone_CSS_Color possess * keys with both numeric and string types making it inappropriate * to merge it's values with wp_parse_args(). This function will * manually merge it's values with defaults. * * @since Duotone v2.0 */ public static function get_colors( $area = 'background', $merge = array() ) { include_once( get_template_directory() . '/inc/csscolor.php' ); $defaults = new Duotone_CSS_Color( 'ffffff' ); if ( 'background' == $area ) $colors = $defaults->bg; else $colors = $defaults->fg; foreach ( $colors as $k => $color ) { if ( isset( $merge[$k] ) ) $colors[$k] = $merge[$k]; } return $colors; } /** * Flush post meta. * * Delete all post metadata that this theme may have * ever stored for a post including currently supported * and deprecated keys. * * @param int $ID Unique id of a WordPress post object. * * @since Duotone v2.0 */ public static function flush_image_data( $ID ) { delete_post_meta( $ID, '_duotone' ); $deprecated = array( 'image_url', 'image_size', 'image_tag', 'image_colors_bg', 'image_colors_fg', 'image_md5', 'image_colors', 'image_color_base' ); foreach ( $deprecated as $key ) { delete_post_meta( $ID, $key ); } } /** * DEBUG: Dump Image Data. * * @since Duotone v2.0 */ public static function dump_image_data( $ID = 0 ) { if ( empty( $ID ) ) $ID = get_the_ID(); $meta = self::get_image_data( $ID ); self::dump_colors( __( 'Foreground' , 'duotone' ), $meta['foreground'] ); self::dump_colors( __( 'Background' , 'duotone' ), $meta['background'] ); echo '
';
		echo 'image_id: ' . absint( $meta['image_id'] );
		echo "\n" . 'is_vertical: ' . absint( $meta['is_vertical'] );
		echo "\n" . 'url: ' . esc_url( $meta['url'] );
		echo '
'; } /** * DEBUG: Dump Colors. * * @since Duotone v2.0 */ public static function dump_colors( $label, $color ) { echo "\n\n" . '' . esc_html( $label ) . ''; if ( empty( $color ) ) { echo '

' . __( 'empty', 'duotone' ) . '

'; return; } echo "\n" . '

'; echo "\n\t" . '-5'; echo "\n\t" . '-4'; echo "\n\t" . '-3'; echo "\n\t" . '-2'; echo "\n\t" . '-1'; echo "\n\t" . '0'; echo "\n\t" . '+1'; echo "\n\t" . '+2'; echo "\n\t" . '+3'; echo "\n\t" . '+4'; echo "\n\t" . '+5'; echo "\n" . '

'; } /** * @since Duotone v2.0 */ public static function is_vertical( $size ) { if ( ! isset( $size[0] ) && ! isset( $size[1] ) ) return false; else if ( $size[0] <= $size[1] || $size[0] < MIN_WIDTH ) return true; return false; } /** * @since Duotone v2.0 */ public static function rgbhex( $red, $green, $blue ) { return sprintf( '%02X%02X%02X', $red, $green, $blue ); } /** * @since Duotone v2.0 */ public static function hsv( $r, $g, $b ) { $h = null; $max = max( $r, $g, $b ); $min = min( $r, $g, $b ); $delta = $max - $min; $v = round( ( $max / 255 ) * 100 ); $s = ( $max != 0 ) ? ( round( $delta / $max * 100 ) ) : 0; if ( $s == 0 ) { $h = false; } else { if ( $r == $max ) $h = ( $g - $b ) / $delta; else if ( $g == $max ) $h = 2 + ( $b - $r ) / $delta; else if ( $b == $max ) $h = 4 + ( $r - $g ) / $delta; $h = round( $h * 60 ); if ( $h > 360 ) $h = 360; if ( $h < 0 ) $h += 360; } return array( $h, $s, $v ); } private static function best_color( $url ) { $r = []; $g = []; $b = []; $colors = []; $default = 'ffffff'; $url = trim( $url ); global $current_blog; if ( defined( 'IS_WPCOM' ) && IS_WPCOM && $current_blog->public == -1 ) { $url = apply_filters( 'wpcom_get_private_file', $url ); // VideoPress images don't support ImgPress if ( ! self::is_videopress_image( $url ) ) $url = add_query_arg( array( 'w' => 300 ), $url ); } else { $url = self::get_image_path( $url ); } $ext = strtolower( pathinfo( $url, PATHINFO_EXTENSION ) ); $ext = explode( '?', $ext ); $ext = $ext[0]; if ( ! self::is_file( $url ) ) return $default; switch ( $ext ) { case 'gif' : $im = imagecreatefromgif( $url ); break; case 'png' : $im = imagecreatefrompng( $url ); break; case 'jpg' : case 'jpeg' : $im = imagecreatefromjpeg( $url ); break; default: return $default; } if ( false === $im ) return $default; $height = imagesy( $im ); $width = imagesx( $im ); // sample five points in the image, based on rule of thirds and center $topy = round( $height / 3 ); $bottomy = round( ( $height / 3 ) * 2 ); $leftx = round( $width / 3 ); $rightx = round( ( $width / 3 ) * 2 ); $centery = round( $height / 2 ); $centerx = round( $width / 2 ); // grab those colors $rgb = array( imagecolorat( $im, $leftx, $topy ), imagecolorat( $im, $rightx, $topy ), imagecolorat( $im, $leftx, $bottomy ), imagecolorat( $im, $rightx, $bottomy ), imagecolorat( $im, $centerx, $centery ), ); // process points for ( $i = 0; $i <= count( $rgb ) - 1; $i++ ) { $r[$i] = ( $rgb[$i] >> 16 ) & 0xFF; $g[$i] = ( $rgb[$i] >> 8 ) & 0xFF; $b[$i] = $rgb[$i] & 0xFF; /* rgb */ list( $colors[$i]['r'], $colors[$i]['g'], $colors[$i]['b'] ) = array( $r[$i], $g[$i], $b[$i] ); /* hsv */ list( $colors[$i]['h'], $colors[$i]['s'], $colors[$i]['v']) = Duotone::hsv( $r[$i], $g[$i], $b[$i] ); /* hex */ $colors[$i]['hex'] = Duotone::rgbhex( $r[$i], $g[$i], $b[$i] ); } $best_saturation = $best_brightness = 0; $the_best_s = $the_best_v = array( 'v' => 0 ); foreach ( $colors as $color => $value ) { if ( $value['s'] > $best_saturation ) { $best_saturation = $value['s']; $the_best_s = $value; } if ( $value['v'] > $best_brightness ) { $best_brightness = $value['v']; $the_best_v = $value; } } // is brightest the same as most saturated? $the_best = ( $the_best_s['v'] >= ( $the_best_v['v'] - ( $the_best_v['v'] / 2 ) ) ) ? $the_best_s : $the_best_v; return $the_best['hex']; } /** * @todo Use sideloaded image instead of first attached image if possible. */ public static function exif_table() { $images = array_values( get_children( array( 'post_parent' => get_the_ID(), 'post_status' => 'inherit', 'post_type' => 'attachment', 'post_mime_type' => 'image' ) ) ); if ( ! $images ) return; $image = array_shift( $images ); $meta = wp_get_attachment_metadata( $image->ID ); if ( ! isset( $meta['image_meta'] ) ) return; $exif = wp_parse_args( $meta['image_meta'], array( 'aperture' => '', 'focal_length' => '', 'iso' => '', 'shutter_speed' => '', 'camera' => '', ) ); $rows = array(); if ( ! empty( $exif['aperture'] ) ) $rows[] = '' . __( 'Aperture:', 'duotone' ) . '' . sprintf( __( 'f/%1$s', 'duotone' ), esc_html( $exif['aperture'] ) ) . ''; if ( ! empty( $exif['focal_length'] ) ) $rows[] = '' . __( 'Focal Length:', 'duotone' ) . '' . sprintf( __( '%1$smm', 'duotone' ), esc_html( $exif['focal_length'] ) ) . ''; if ( ! empty( $exif['iso'] ) ) $rows[] = '' . __( 'ISO:', 'duotone' ) . '' . esc_html( $exif['iso'] ) . ''; if ( ! empty( $exif['shutter_speed'] ) ) $rows[] = '' . __( 'Shutter:', 'duotone' ) . '' . sprintf( __( '%1$s sec', 'duotone' ), esc_html( self::dec2frac( $exif['shutter_speed'] ) ) ) . ''; if ( ! empty( $exif['iso'] ) ) $rows[] = '' . __( 'Camera:', 'duotone' ) . '' . esc_html( $exif['camera'] ) . ''; if ( empty( $rows ) ) return; echo "\n" . ''; foreach ( $rows as $row ) { echo "\n\t" . '' . $row . ''; } echo "\n" . '
'; } /** * Used only by Duotone::exif_table(). */ public static function dec2frac( $dec ) { global $duotone_result; if ( (int) $dec > 1 ) return $dec; $count = 0; $duotone_result = array(); self::decimalToFraction( $dec, $count, $duotone_result ); # $count = count( $dec ); return self::simplifyFraction( $duotone_result, $count, 1, $duotone_result[$count] ?? null ); } /** * Used only by Duotone::dec2frac(). */ public static function decimalToFraction( $decimal, $count, $duotone_result ) { global $duotone_result; $a = 0; if ( is_numeric( $decimal ) ) { $a = ( 1 / $decimal ); } $b = ( $a - floor( $a ) ); $count++; if ( $b > .01 && $count <= 5 ) self::decimalToFraction( $b, $count, $duotone_result ); $duotone_result[$count] = floor( $a ); } /* * Simplifies a fraction in an array form that is returned from * Duotone::decimalToFraction() * * Used only by Duotone::decimalToFraction(). */ public static function simplifyFraction( $fraction, $count, $top, $bottom ) { $next = 0; if ( isset( $fraction[$count-1] ) ) $next = $fraction[$count-1]; $a = ( $bottom * $next ) + $top; $top = $bottom; $bottom = $a; $count--; if ( $count > 0 ) self::simplifyFraction( $fraction, $count, $top, $bottom ); else return sprintf( __( '%1$d/%2$d', 'duotone' ), $bottom, $top ); } /** * Ensure that a string representing a color in hexadecimal * notation is safe for use in css and database saves. * * @param string Color in hexadecimal notation. "#" may or may not be prepended to the string. * @return string Color in hexadecimal notation on success - the string "transparent" otherwise. * * @since Duotone v2.0 */ public static function sanitize_color_hex( $hex, $prefix = '#' ) { $hex = trim( $hex ); /* Strip recognized prefixes. */ if ( 0 === strpos( $hex, '#' ) ) $hex = substr( $hex, 1 ); elseif ( 0 === strpos( $hex, '%23' ) ) $hex = substr( $hex, 3 ); if ( 0 !== preg_match( '/^[0-9a-fA-F]{6}$/', $hex ) ) return $prefix . $hex; return 'transparent'; } /** * COMPAT: Allow deprecated `background_color` option to temporarily sub for theme modification. * * Prior to version 2.0, Duotone had a custom Theme Options screen * which allowed users to define a custom background color to override * automatic color generation. For complinace with the WPTRT guidelines, * this custom implementation has been replaced with WordPress core * background functionality. * * Users should see the deprecated background color in Appearance -> Background * as well as in all template files. We will need to override get_theme_mod() * when used by get_background_color(). * * Hooks in the `theme_mod_background_color` filter. * * @since Duotone v2.0 */ public static function deprecated_background_color_override( $color ) { $deprecated_color = self::sanitize_color_hex( get_option( 'background_color' ), '' ); if ( 'transparent' != $deprecated_color ) { set_theme_mod( 'background_color', $deprecated_color ); return $deprecated_color; } return $color; } /** * WPCOM: Add crop parameters to image urls for archive templates. * * @since Duotone v2.0 */ public static function wpcom_archive_image_url( $url ) { if ( empty( $url ) ) return $url; if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) $url = add_query_arg( array( 'w' => 75, 'h' => 75, 'crop' => 1 ), $url ); return $url; } /** * WPCOM: Add width query arg to image urls for singular templates. * * @since Duotone v2.0 */ public static function wpcom_singular_image_url( $url, $image ) { if ( empty( $url ) ) return $url; if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) { $is_vertical = ( isset( $image['is_vertical'] ) ) ? $image['is_vertical'] : 1; $new_width = ( $image['is_vertical'] ) ? MIN_WIDTH : MAX_WIDTH; $url = add_query_arg( array( 'w' => absint( $new_width ) ), $url ); } return $url; } /** * WPCOM: Set $themecolors global. * * @since Duotone v2.0 */ public static function set_themecolors() { $background = []; $foreground = []; if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) { extract( self::$image ); global $themecolors; $themecolors = array( 'bg' => self::sanitize_color_hex( $background['-2'], '' ), 'border' => self::sanitize_color_hex( $background['-1'], '' ), 'text' => self::sanitize_color_hex( $foreground['-2'], '' ), 'link' => self::sanitize_color_hex( $foreground['-3'], '' ), 'url' => self::sanitize_color_hex( $foreground['-4'], '' ), ); } } }