628 lines
18 KiB
PHP
628 lines
18 KiB
PHP
<?php
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/**
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* Class WP_Site_Icon.
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*
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* @since 4.3.0
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*/
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class WP_Site_Icon {
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/**
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* The minimum size of the site icon.
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*
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* @since 4.3.0
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*
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* @var int
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*/
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public $min_size = 512;
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/**
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* The size to which to crop the image so that we can display it in the UI nicely.
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*
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* @since 4.3.0
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*
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* @var int
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*/
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public $page_crop = 512;
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/**
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*
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* @since 4.3.0
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*
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* @var array
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*/
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public $site_icon_sizes = array(
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/**
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* Square, medium sized tiles for IE11+.
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*
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* @link https://msdn.microsoft.com/library/dn455106(v=vs.85).aspx
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*/
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270,
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/**
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* App icons up to iPhone 6 Plus.
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*
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* @link https://developer.apple.com/library/prerelease/ios/documentation/UserExperience/Conceptual/MobileHIG/IconMatrix.html
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*/
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180,
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// Our regular Favicon.
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32,
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);
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/**
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* Register our actions and filters.
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*
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* @since 4.3.0
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*/
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public function __construct() {
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// Add the favicon to the backend.
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add_action( 'admin_menu', array( $this, 'admin_menu_upload_site_icon' ) );
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add_action( 'admin_action_set_site_icon', array( $this, 'set_site_icon' ) );
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add_action( 'admin_action_remove_site_icon', array( $this, 'remove_site_icon' ) );
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add_action( 'delete_attachment', array( $this, 'delete_attachment_data' ), 10, 1 );
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add_filter( 'get_post_metadata', array( $this, 'get_post_metadata' ), 10, 4 );
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}
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/**
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* Add a hidden upload page.
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*
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* There is no need to access it directly.
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*
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* @since 4.3.0
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*/
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public function admin_menu_upload_site_icon() {
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$hook = add_submenu_page( null, __( 'Site Icon' ), __( 'Site Icon' ), 'manage_options', 'site-icon', array( $this, 'upload_site_icon_page' ) );
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add_action( "load-$hook", array( $this, 'add_upload_settings' ) );
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add_action( "load-$hook", array( $this, 'maybe_skip_cropping' ) );
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add_action( "admin_print_scripts-$hook", array( $this, 'enqueue_scripts' ) );
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}
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/**
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* Add scripts to admin settings pages.
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*
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* @since 4.3.0
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*/
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public function enqueue_scripts() {
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wp_enqueue_style( 'jcrop' );
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wp_enqueue_script( 'site-icon-crop' );
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}
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/**
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* Load on when the admin is initialized.
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*
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* @since 4.3.0
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*/
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public function add_upload_settings() {
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add_settings_section( 'site-icon-upload', false, false, 'site-icon-upload' );
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add_settings_field( 'site-icon-upload', __( 'Upload Image' ), array( $this, 'upload_field' ), 'site-icon-upload', 'site-icon-upload', array(
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'label_for' => 'site-icon-upload',
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) );
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}
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/**
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* Removes site icon.
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*
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* @since 4.3.0
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*/
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public function remove_site_icon() {
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check_admin_referer( 'remove-site-icon' );
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$this->delete_site_icon();
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add_settings_error( 'site-icon', 'icon-removed', __( 'Site Icon removed.' ), 'updated' );
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}
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/**
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* Uploading a site_icon is a 3 step process
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*
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* 1. Select the file to upload
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* 2. Crop the file
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* 3. Confirmation
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*
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* @since 4.3.0
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*/
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public function upload_site_icon_page() {
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$action = isset( $_REQUEST['action'] ) ? $_REQUEST['action'] : 'select_site_icon';
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switch ( $action ) {
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case 'select_site_icon':
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$this->select_page();
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break;
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case 'crop_site_icon':
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$this->crop_page();
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break;
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default:
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wp_safe_redirect( admin_url( 'options-general.php#site-icon' ) );
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exit;
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}
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}
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/**
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* Displays the site_icon form to upload the image.
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*
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* @since 4.3.0
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*/
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public function select_page() {
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?>
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<div class="wrap">
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<h2><?php _e( 'Add Site Icon' ); ?></h2>
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<?php settings_errors( 'site-icon' ); ?>
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<?php do_settings_sections( 'site-icon-upload' ); ?>
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</div>
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<?php
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}
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/**
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* Settings field for file upload.
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*
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* @since 4.3.0
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*/
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public function upload_field() {
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wp_enqueue_media();
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wp_enqueue_script( 'site-icon' );
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wp_dequeue_script( 'site-icon-crop' );
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$update_url = esc_url( add_query_arg( array(
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'page' => 'site-icon',
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'action' => 'crop_site_icon',
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), wp_nonce_url( admin_url( 'options-general.php' ), 'crop-site-icon' ) ) );
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?>
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<p class="hide-if-no-js">
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<label class="screen-reader-text" for="choose-from-library-link"><?php _e( 'Choose an image from your media library:' ); ?></label>
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<button type="button" id="choose-from-library-link" class="button" data-size="<?php echo absint( $this->min_size ); ?>" data-update-link="<?php echo esc_attr( $update_url ); ?>" data-choose="<?php esc_attr_e( 'Choose a Site Icon' ); ?>" data-update="<?php esc_attr_e( 'Set as Site Icon' ); ?>"><?php _e( 'Choose Image' ); ?></button>
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</p>
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<form class="hide-if-js" action="<?php echo esc_url( admin_url( 'options-general.php?page=site-icon' ) ); ?>" method="post" enctype="multipart/form-data">
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<input name="action" value="crop_site_icon" type="hidden" />
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<input name="site-icon" type="file" />
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<input name="submit" value="<?php esc_attr_e( 'Upload Image' ); ?>" type="submit" class="button button-primary" />
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<p class="description">
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<?php printf( __( 'The image is recommended to be a square image of at least %spx in both width and height.' ), "<strong>$this->min_size</strong>" ); ?>
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</p>
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<?php wp_nonce_field( 'crop-site-icon' ); ?>
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</form>
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<?php
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}
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/**
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* Check if the image needs cropping.
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*
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* If it doesn't need cropping, proceed to set the icon.
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*
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* @since 4.3.0
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*/
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public function maybe_skip_cropping() {
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if ( empty( $_REQUEST['action'] ) || 'crop_site_icon' !== $_REQUEST['action'] ) {
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return;
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}
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check_admin_referer( 'crop-site-icon' );
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list( $attachment_id, $url, $image_size ) = $this->get_upload_data();
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if ( $image_size[0] == $image_size[1] && $image_size[0] == $this->min_size ) {
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// No cropping required.
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$url = add_query_arg( array(
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'attachment_id' => $attachment_id,
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'skip-cropping' => true,
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'create-new-attachment' => true,
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'action' => 'set_site_icon',
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), wp_nonce_url( admin_url( 'options-general.php' ), 'set-site-icon' ) );
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wp_safe_redirect( $url );
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die();
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}
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}
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/**
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* Crop a the image admin view.
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*
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* @since 4.3.0
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*/
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public function crop_page() {
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check_admin_referer( 'crop-site-icon' );
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list( $attachment_id, $url, $image_size ) = $this->get_upload_data();
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if ( $image_size[0] < $this->min_size ) {
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add_settings_error( 'site-icon', 'too-small', sprintf( __( 'The selected image is smaller than %upx in width.' ), $this->min_size ) );
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// back to step one
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$this->select_page();
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return;
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}
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if ( $image_size[1] < $this->min_size ) {
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add_settings_error( 'site-icon', 'too-small', sprintf( __( 'The selected image is smaller than %upx in height.' ), $this->min_size ) );
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// Back to step one.
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$this->select_page();
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return;
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}
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wp_localize_script( 'site-icon-crop', 'wpSiteIconCropData', array(
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'init_x' => 0,
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'init_y' => 0,
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'init_size' => $this->min_size,
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'min_size' => $this->min_size,
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'width' => $image_size[0],
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'height' => $image_size[1],
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) );
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?>
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<div class="wrap">
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<h2 class="site-icon-title"><?php _e( 'Site Icon' ); ?></h2>
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<?php settings_errors( 'site-icon' ); ?>
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<div class="site-icon-crop-shell">
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<form action="options-general.php" method="post" enctype="multipart/form-data">
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<p class="hide-if-no-js description"><?php _e('Choose the part of the image you want to use as your site icon.'); ?></p>
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<p class="hide-if-js description"><strong><?php _e( 'You need Javascript to choose a part of the image.'); ?></strong></p>
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<div class="site-icon-crop-wrapper">
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<img src="<?php echo esc_url( $url ); ?>" id="crop-image" class="site-icon-crop-image" width="512" height="" alt="<?php esc_attr_e( 'Image to be cropped' ); ?>"/>
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</div>
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<div class="site-icon-crop-preview-shell hide-if-no-js">
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<h3><?php _e( 'Preview' ); ?></h3>
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<strong><?php _e( 'As your favicon' ); ?></strong>
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<div class="site-icon-crop-favicon-preview-shell">
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<img src="images/browser.png" class="site-icon-browser-preview" width="182" height="" alt="<?php esc_attr_e( 'Browser Chrome' ); ?>"/>
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<div class="site-icon-crop-preview-favicon">
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<img src="<?php echo esc_url( $url ); ?>" id="preview-favicon" alt="<?php esc_attr_e( 'Preview Favicon' ); ?>"/>
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</div>
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<span class="site-icon-browser-title"><?php bloginfo( 'name' ); ?></span>
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</div>
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<strong><?php _e( 'As a mobile icon' ); ?></strong>
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<div class="site-icon-crop-preview-homeicon">
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<img src="<?php echo esc_url( $url ); ?>" id="preview-homeicon" alt="<?php esc_attr_e( 'Preview Home Icon' ); ?>"/>
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</div>
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</div>
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<input type="hidden" id="crop-x" name="crop-x" value="0" />
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<input type="hidden" id="crop-y" name="crop-y" value="0" />
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<input type="hidden" id="crop-width" name="crop-w" value="<?php echo esc_attr( $this->min_size ); ?>" />
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<input type="hidden" id="crop-height" name="crop-h" value="<?php echo esc_attr( $this->min_size ); ?>" />
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<input type="hidden" name="action" value="set_site_icon" />
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<input type="hidden" name="attachment_id" value="<?php echo esc_attr( $attachment_id ); ?>" />
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<?php if ( empty( $_POST ) && isset( $_GET['file'] ) ) : ?>
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<input type="hidden" name="create-new-attachment" value="true" />
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<?php endif; ?>
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<?php wp_nonce_field( 'set-site-icon' ); ?>
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<p class="submit">
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<?php submit_button( __( 'Crop and Publish' ), 'primary hide-if-no-js', 'submit', false ); ?>
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<?php submit_button( __( 'Publish' ), 'primary hide-if-js', 'submit', false ); ?>
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<a class="button secondary" href="options-general.php"><?php _e( 'Cancel' ); ?></a>
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</p>
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</form>
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</div>
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</div>
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<?php
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}
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/**
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* Saves a new Site Icon.
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*
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* @since 4.3.0
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*/
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public function set_site_icon() {
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check_admin_referer( 'set-site-icon' );
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$attachment_id = absint( $_REQUEST['attachment_id'] );
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$create_new_attachement = ! empty( $_REQUEST['create-new-attachment'] );
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/*
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* If the current attachment as been set as site icon don't delete it.
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*/
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if ( get_option( 'site_icon' ) == $attachment_id ) {
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// Get the file path.
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$image_url = get_attached_file( $attachment_id );
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// Update meta data and possibly regenerate intermediate sizes.
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add_filter( 'intermediate_image_sizes_advanced', array( $this, 'additional_sizes' ) );
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$this->update_attachment_metadata( $attachment_id, $image_url );
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remove_filter( 'intermediate_image_sizes_advanced', array( $this, 'additional_sizes' ) );
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} else {
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// Delete any existing site icon images.
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$this->delete_site_icon();
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if ( empty( $_REQUEST['skip-cropping'] ) ) {
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$cropped = wp_crop_image( $attachment_id, $_REQUEST['crop-x'], $_REQUEST['crop-y'], $_REQUEST['crop-w'], $_REQUEST['crop-h'], $this->min_size, $this->min_size );
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} elseif ( $create_new_attachement ) {
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$cropped = _copy_image_file( $attachment_id );
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} else {
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$cropped = get_attached_file( $attachment_id );
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}
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if ( ! $cropped || is_wp_error( $cropped ) ) {
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wp_die( __( 'Image could not be processed. Please go back and try again.' ), __( 'Image Processing Error' ) );
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}
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$object = $this->create_attachment_object( $cropped, $attachment_id );
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if ( $create_new_attachement ) {
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unset( $object['ID'] );
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}
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// Update the attachment.
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add_filter( 'intermediate_image_sizes_advanced', array( $this, 'additional_sizes' ) );
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$attachment_id = $this->insert_attachment( $object, $cropped );
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remove_filter( 'intermediate_image_sizes_advanced', array( $this, 'additional_sizes' ) );
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// Save the site_icon data into option
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update_option( 'site_icon', $attachment_id );
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}
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add_settings_error( 'site-icon', 'icon-updated', __( 'Site Icon updated.' ), 'updated' );
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}
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/**
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* Upload the file to be cropped in the second step.
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*
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* @since 4.3.0
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*/
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public function handle_upload() {
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$uploaded_file = $_FILES['site-icon'];
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$file_type = wp_check_filetype_and_ext( $uploaded_file['tmp_name'], $uploaded_file['name'] );
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if ( ! wp_match_mime_types( 'image', $file_type['type'] ) ) {
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wp_die( __( 'The uploaded file is not a valid image. Please try again.' ) );
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}
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$file = wp_handle_upload( $uploaded_file, array( 'test_form' => false ) );
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if ( isset( $file['error'] ) ) {
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wp_die( $file['error'], __( 'Image Upload Error' ) );
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}
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$url = $file['url'];
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$type = $file['type'];
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$file = $file['file'];
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$filename = basename( $file );
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// Construct the object array
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$object = array(
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'post_title' => $filename,
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'post_content' => $url,
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'post_mime_type' => $type,
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'guid' => $url,
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'context' => 'site-icon',
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);
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// Save the data
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$attachment_id = wp_insert_attachment( $object, $file );
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return compact( 'attachment_id', 'file', 'filename', 'url', 'type' );
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}
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/**
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* Create an attachment 'object'.
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*
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* @since 4.3.0
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*
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* @param string $cropped Cropped image URL.
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* @param int $parent_attachment_id Attachment ID of parent image.
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* @return array Attachment object.
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*/
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public function create_attachment_object( $cropped, $parent_attachment_id ) {
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$parent = get_post( $parent_attachment_id );
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$parent_url = $parent->guid;
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$url = str_replace( basename( $parent_url ), basename( $cropped ), $parent_url );
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$size = @getimagesize( $cropped );
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$image_type = ( $size ) ? $size['mime'] : 'image/jpeg';
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$object = array(
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'ID' => $parent_attachment_id,
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'post_title' => basename( $cropped ),
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'post_content' => $url,
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'post_mime_type' => $image_type,
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'guid' => $url,
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'context' => 'site-icon'
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);
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return $object;
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}
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/**
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* Insert an attachment.
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*
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* @since 4.3.0
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*
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* @param array $object Attachment object.
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* @param string $file File path of the attached image.
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* @return int Attachment ID
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*/
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public function insert_attachment( $object, $file ) {
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$attachment_id = wp_insert_attachment( $object, $file );
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$this->update_attachment_metadata( $attachment_id, $file );
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return $attachment_id;
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}
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/**
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* Update the metadata of an attachment.
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*
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* @since 4.3.0
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*
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* @param int $attachment_id Attachment ID
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* @param string $file File path of the attached image.
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*/
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public function update_attachment_metadata( $attachment_id, $file ) {
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$metadata = wp_generate_attachment_metadata( $attachment_id, $file );
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/**
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* Filter the site icon attachment metadata.
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*
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* @since 4.3.0
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*
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* @see wp_generate_attachment_metadata()
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*
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* @param array $metadata Attachment metadata.
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*/
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$metadata = apply_filters( 'site_icon_attachment_metadata', $metadata );
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wp_update_attachment_metadata( $attachment_id, $metadata );
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}
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/**
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* Add additional sizes to be made when creating the site_icon images.
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*
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* @since 4.3.0
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|
*
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|
* @param array $sizes
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|
* @return array
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|
*/
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public function additional_sizes( $sizes = array() ) {
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|
$only_crop_sizes = array();
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|
|
|
/**
|
|
* Filter the different dimensions that a site icon is saved in.
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|
*
|
|
* @since 4.3.0
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|
*
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|
* @param array $site_icon_sizes Sizes available for the Site Icon.
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|
*/
|
|
$this->site_icon_sizes = apply_filters( 'site_icon_image_sizes', $this->site_icon_sizes );
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|
|
|
// Use a natural sort of numbers.
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|
natsort( $this->site_icon_sizes );
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|
$this->site_icon_sizes = array_reverse( $this->site_icon_sizes );
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|
|
|
// ensure that we only resize the image into
|
|
foreach ( $sizes as $name => $size_array ) {
|
|
if ( $size_array['crop'] ) {
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|
$only_crop_sizes[ $name ] = $size_array;
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|
}
|
|
}
|
|
|
|
foreach ( $this->site_icon_sizes as $size ) {
|
|
if ( $size < $this->min_size ) {
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|
$only_crop_sizes[ 'site_icon-' . $size ] = array(
|
|
'width ' => $size,
|
|
'height' => $size,
|
|
'crop' => true,
|
|
);
|
|
}
|
|
}
|
|
|
|
return $only_crop_sizes;
|
|
}
|
|
|
|
/**
|
|
* Add Site Icon sizes to the array of image sizes on demand.
|
|
*
|
|
* @since 4.3.0
|
|
*
|
|
* @param array $sizes
|
|
* @return array
|
|
*/
|
|
public function intermediate_image_sizes( $sizes = array() ) {
|
|
/** This filter is documented in wp-admin/includes/site-icon.php */
|
|
$this->site_icon_sizes = apply_filters( 'site_icon_image_sizes', $this->site_icon_sizes );
|
|
foreach ( $this->site_icon_sizes as $size ) {
|
|
$sizes[] = 'site_icon-' . $size;
|
|
}
|
|
|
|
return $sizes;
|
|
}
|
|
|
|
/**
|
|
* Deletes all additional image sizes, used for site icons.
|
|
*
|
|
* @since 4.3.0
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function delete_site_icon() {
|
|
// We add the filter to make sure that we also delete all the added images.
|
|
add_filter( 'intermediate_image_sizes', array( $this, 'intermediate_image_sizes' ) );
|
|
wp_delete_attachment( get_option( 'site_icon' ), true );
|
|
remove_filter( 'intermediate_image_sizes', array( $this, 'intermediate_image_sizes' ) );
|
|
|
|
return delete_option( 'site_icon' );
|
|
}
|
|
|
|
/**
|
|
* Deletes the Site Icon when the image file is deleted.
|
|
*
|
|
* @since 4.3.0
|
|
*
|
|
* @param int $post_id Attachment ID.
|
|
*/
|
|
public function delete_attachment_data( $post_id ) {
|
|
$site_icon_id = get_option( 'site_icon' );
|
|
|
|
if ( $site_icon_id && $post_id == $site_icon_id ) {
|
|
delete_option( 'site_icon' );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Adds custom image sizes when meta data for an image is requested, that happens to be used as Site Icon.
|
|
*
|
|
* @since 4.3.0
|
|
*
|
|
* @param null|array|string $value The value get_metadata() should
|
|
* return - a single metadata value,
|
|
* or an array of values.
|
|
* @param int $post_id Post ID.
|
|
* @param string $meta_key Meta key.
|
|
* @param string|array $single Meta value, or an array of values.
|
|
* @return array|null|string
|
|
*/
|
|
public function get_post_metadata( $value, $post_id, $meta_key, $single ) {
|
|
$site_icon_id = get_option( 'site_icon' );
|
|
|
|
if ( $post_id == $site_icon_id && '_wp_attachment_backup_sizes' == $meta_key && $single ) {
|
|
add_filter( 'intermediate_image_sizes', array( $this, 'intermediate_image_sizes' ) );
|
|
}
|
|
|
|
return $value;
|
|
}
|
|
|
|
/**
|
|
* Get the data required to work with the uploaded image
|
|
*
|
|
* @since 4.3.0
|
|
*
|
|
* @return array containing the collected data
|
|
*/
|
|
private function get_upload_data() {
|
|
if ( isset( $_GET['file'] ) ) {
|
|
$attachment_id = absint( $_GET['file'] );
|
|
$file = get_attached_file( $attachment_id, true );
|
|
$url = wp_get_attachment_image_src( $attachment_id, 'full' );
|
|
$url = $url[0];
|
|
} else {
|
|
$upload = $this->handle_upload();
|
|
$attachment_id = $upload['attachment_id'];
|
|
$file = $upload['file'];
|
|
$url = $upload['url'];
|
|
}
|
|
|
|
$image_size = getimagesize( $file );
|
|
|
|
return array( $attachment_id, $url, $image_size );
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @global WP_Site_Icon $wp_site_icon
|
|
*/
|
|
$GLOBALS['wp_site_icon'] = new WP_Site_Icon;
|