<?php
/**
* @package Duotone
* @since Duotone v2.0
*/
class Duotone {
static $image = false;
/**
* @since Duotone v2.0
*/
public static function init() {
add_action( 'publish_post', array( __class__, 'save_image_data' ) );
add_action( 'publish_page', array( __class__, 'save_image_data' ) );
add_action( 'request', array( __class__, 'modify_request' ) );
add_action( 'template_redirect', array( __class__, 'setup_single_post_template' ) );
add_action( 'wp_print_scripts', array( __class__, 'enqueue_scripts' ) );
add_filter( 'theme_mod_background_color', array( __class__, 'deprecated_background_color_override' ) );
add_filter( 'duotone_archive_image_url', array( __class__, 'wpcom_archive_image_url' ) );
add_filter( 'duotone_singular_image_url', array( __class__, 'wpcom_singular_image_url' ), 10, 2 );
add_filter( 'body_class', array( __class__, 'body_class' ), 0 );
add_filter( 'the_content', array( __class__, 'content_setup' ), 0 );
}
public static function body_class( $classes ) {
$orientation = 'horizontal';
if ( 1 == absint( self::$image['is_vertical'] ?? 0 ) && ! is_archive() && ! is_search() )
$orientation = 'vertical';
$classes[] = $orientation;
if ( is_search() )
$classes[] = 'archive';
return $classes;
}
public static function enqueue_scripts() {
if ( is_singular() && comments_open() && get_option( 'thread_comments' ) )
wp_enqueue_script( 'comment-reply' );
wp_enqueue_script( 'duotone', get_template_directory_uri() . '/inc/duotone.js', array( 'jquery' ), '20111219' );
wp_localize_script( 'duotone', 'Duotone', array( 'homeUrl' => 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 '<img class="archive-image" src="' . esc_url( $url ) . '" alt="" />';
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 '<img src="' . esc_url( $url ) . '" alt="" />';
}
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 = '<style type="text/css"> .image .nav {z-index: auto !important} #image .video-player {z-index: 1; position: relative}</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( '/<img [^>]*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'];
?>
<style type="text/css" media="screen">
body {
background-color: <?php echo self::sanitize_color_hex( $background_color ); ?>;
}
#page {
background-color: <?php echo self::sanitize_color_hex( $background['-2'] ); ?>;
color: <?php echo self::sanitize_color_hex( $foreground['-2'] ); ?>;
}
#menu a, #menu a:link, #menu a:visited {
color: <?php echo self::sanitize_color_hex( $background['-3'] ); ?>;
}
#menu a:hover, #menu a:active {
color: <?php echo self::sanitize_color_hex( $foreground['-3'] ); ?>;
}
a,a:link, a:visited {
color: <?php echo self::sanitize_color_hex( $foreground['-3'] ); ?>;
}
a:hover, a:active {
color: <?php echo self::sanitize_color_hex( $background['+2'] ); ?>;
}
#header h1,
#header h1 a,
#header h1 a:link,
#header h1 a:visited,
#header h1 a:active {
color: <?php echo self::sanitize_color_hex( $background['+3'] ); ?>;
}
#header h1 a:hover {
color: <?php echo self::sanitize_color_hex( $background['+2'] ); ?>;
}
.navigation a,
.navigation a:link,
.navigation a:visited,
.navigation a:active {
color: <?php echo self::sanitize_color_hex( $foreground['-1'] ); ?>;
}
h1:hover,
h2:hover,
h3:hover,
h4:hover,
h5:hover,
h6:hover,
.navigation a:hover {
color: <?php echo self::sanitize_color_hex( $foreground['-2'] ); ?>;
}
.description,
h3#reply-title,
#comments,
#content #sidebar h2,
h2, h2 a, h2 a:link, h2 a:visited, h2 a:active,
h3, h3 a, h3 a:link, h3 a:visited, h3 a:active,
h4, h4 a, h4 a:link, h4 a:visited, h4 a:active,
h5, h5 a, h5 a:link, h5 a:visited, h5 a:active,
h6, h6 a, h6 a:link, h6 a:visited, h6 a:active {
color: <?php echo self::sanitize_color_hex( $background['+3'] ); ?> !important;
border-color: <?php echo self::sanitize_color_hex( $background['+2'] ); ?> !important;
}
#content #sidebar {
border-top: 1px solid <?php echo self::sanitize_color_hex( $background['+3'] ); ?>;
}
#postmetadata, #commentform p, .commentlist li, #post, #postmetadata .sleeve, #post .sleeve,
#content {
color: <?php echo self::sanitize_color_hex( $background['+3'] ); ?>;
border-color: <?php echo self::sanitize_color_hex( $background['+3'] ); ?>;
}
</style><?php
}
public static function scrape_first_image_url( $content ) {
if ( preg_match( '/<img [^>]*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 '<pre>';
echo 'image_id: ' . absint( $meta['image_id'] );
echo "\n" . 'is_vertical: ' . absint( $meta['is_vertical'] );
echo "\n" . 'url: ' . esc_url( $meta['url'] );
echo '</pre>';
}
/**
* DEBUG: Dump Colors.
*
* @since Duotone v2.0
*/
public static function dump_colors( $label, $color ) {
echo "\n\n" . '<strong>' . esc_html( $label ) . '</strong>';
if ( empty( $color ) ) {
echo '<p>' . __( 'empty', 'duotone' ) . '</p>';
return;
}
echo "\n" . '<p>';
echo "\n\t" . '<span style="background-color:' . self::sanitize_color_hex( $color['-5'] ) . ';">-5</span>';
echo "\n\t" . '<span style="background-color:' . self::sanitize_color_hex( $color['-4'] ) . ';">-4</span>';
echo "\n\t" . '<span style="background-color:' . self::sanitize_color_hex( $color['-3'] ) . ';">-3</span>';
echo "\n\t" . '<span style="background-color:' . self::sanitize_color_hex( $color['-2'] ) . ';">-2</span>';
echo "\n\t" . '<span style="background-color:' . self::sanitize_color_hex( $color['-1'] ) . ';">-1</span>';
echo "\n\t" . '<span style="background-color:' . self::sanitize_color_hex( $color[0] ) . ';">0</span>';
echo "\n\t" . '<span style="background-color:' . self::sanitize_color_hex( $color['+1'] ) . ';">+1</span>';
echo "\n\t" . '<span style="background-color:' . self::sanitize_color_hex( $color['+2'] ) . ';">+2</span>';
echo "\n\t" . '<span style="background-color:' . self::sanitize_color_hex( $color['+3'] ) . ';">+3</span>';
echo "\n\t" . '<span style="background-color:' . self::sanitize_color_hex( $color['+4'] ) . ';">+4</span>';
echo "\n\t" . '<span style="background-color:' . self::sanitize_color_hex( $color['+5'] ) . ';">+5</span>';
echo "\n" . '</p>';
}
/**
* @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'] ) )
$rows[] = '<th>' . __( 'Aperture:', 'duotone' ) . '</th><td>' . sprintf( __( 'f/%1$s', 'duotone' ), esc_html( $exif['aperture'] ) ) . '</td>';
if ( ! empty( $exif['focal_length'] ) )
$rows[] = '<th>' . __( 'Focal Length:', 'duotone' ) . '</th><td>' . sprintf( __( '%1$smm', 'duotone' ), esc_html( $exif['focal_length'] ) ) . '</td>';
if ( ! empty( $exif['iso'] ) )
$rows[] = '<th>' . __( 'ISO:', 'duotone' ) . '</th><td>' . esc_html( $exif['iso'] ) . '</td>';
if ( ! empty( $exif['shutter_speed'] ) )
$rows[] = '<th>' . __( 'Shutter:', 'duotone' ) . '</th><td>' . sprintf( __( '%1$s sec', 'duotone' ), esc_html( self::dec2frac( $exif['shutter_speed'] ) ) ) . '</td>';
if ( ! empty( $exif['iso'] ) )
$rows[] = '<th>' . __( 'Camera:', 'duotone' ) . '</th><td>' . esc_html( $exif['camera'] ) . '</td>';
if ( empty( $rows ) )
return;
echo "\n" . '<table class="photo-tech">';
foreach ( $rows as $row ) {
echo "\n\t" . '<tr>' . $row . '</tr>';
}
echo "\n" . '</table>';
}
/**
* 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'], '' ),
);
}
}
}