Compartir: imagen automática para redes y carteles con QR
- Imagen 1200×630 por animal (foto, nombre, estado, logo), en su idioma y con los colores del tema; se regenera sola si cambia la foto o el nombre. Se usa en og:image/twitter (con Yoast o sin él) y se puede descargar desde la ficha del panel. - Cartel A4 imprimible con QR a la ficha (acción de fila y acción en bloque). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
317
wp-content/mu-plugins/gure-ametsa/share.php
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317
wp-content/mu-plugins/gure-ametsa/share.php
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<?php
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/**
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* Compartir: imagen automática para redes (1200×630) y carteles imprimibles con QR.
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*/
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defined( 'ABSPATH' ) || exit;
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define( 'GA_SHARE_VERSION', 2 );
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define( 'GA_QR_JS', 'https://cdn.jsdelivr.net/npm/qrcode-generator@2.0.4/dist/qrcode.js' );
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define( 'GA_QR_SRI', 'sha384-e9EFD6BGC90bkW9aDV5xbbBfzwN7G8YImHao2lfLVKV/hPB0E0go+H3I64h7oHtA' );
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/* -------------------------------------------------------------------------
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* Imagen para redes
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* ---------------------------------------------------------------------- */
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/** Ruta y URL de la imagen de un animal (el nombre cambia si cambia la foto, el nombre o el diseño). */
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function ga_share_image_paths( $post_id ) {
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$uploads = wp_upload_dir();
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$lang = function_exists( 'pll_get_post_language' ) ? pll_get_post_language( $post_id ) : 'es';
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$hash = substr( md5( implode( '|', array(
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GA_SHARE_VERSION, get_the_title( $post_id ), get_post_thumbnail_id( $post_id ), $lang, ga_status( $post_id ),
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function_exists( 'ga_color' ) ? ga_color( 'primary' ) . ga_color( 'accent' ) : '',
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) ) ), 0, 10 );
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$name = "animal-$post_id-$hash.jpg";
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return array(
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'dir' => trailingslashit( $uploads['basedir'] ) . 'ga-share',
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'file' => trailingslashit( $uploads['basedir'] ) . "ga-share/$name",
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'url' => trailingslashit( $uploads['baseurl'] ) . "ga-share/$name",
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'glob' => trailingslashit( $uploads['basedir'] ) . "ga-share/animal-$post_id-*.jpg",
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);
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}
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/** Devuelve la URL de la imagen para redes, generándola si hace falta. */
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function ga_share_image_url( $post_id ) {
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$p = ga_share_image_paths( $post_id );
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if ( ! file_exists( $p['file'] ) && ! ga_generate_share_image( $post_id ) ) {
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return '';
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}
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return $p['url'];
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}
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function ga_hex_color( $img, $hex ) {
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$hex = ltrim( $hex, '#' );
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return imagecolorallocate( $img, hexdec( substr( $hex, 0, 2 ) ), hexdec( substr( $hex, 2, 2 ) ), hexdec( substr( $hex, 4, 2 ) ) );
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}
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/** Carga una imagen de la biblioteca (JPEG, PNG o WebP) como recurso GD. */
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function ga_gd_load( $path ) {
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$type = wp_check_filetype( $path )['type'] ?? '';
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return match ( $type ) {
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'image/jpeg' => @imagecreatefromjpeg( $path ),
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'image/png' => @imagecreatefrompng( $path ),
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'image/webp' => function_exists( 'imagecreatefromwebp' ) ? @imagecreatefromwebp( $path ) : false,
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default => false,
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};
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}
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/** Parte un texto en líneas que quepan en $width con la fuente y tamaño dados. */
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function ga_gd_wrap( $text, $font, $size, $width ) {
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$lines = array( '' );
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foreach ( preg_split( '/\s+/u', $text ) as $word ) {
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$try = trim( end( $lines ) . ' ' . $word );
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$box = imagettfbbox( $size, 0, $font, $try );
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if ( $box[2] - $box[0] > $width && '' !== end( $lines ) ) {
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$lines[] = $word;
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} else {
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$lines[ count( $lines ) - 1 ] = $try;
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}
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}
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return $lines;
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}
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function ga_generate_share_image( $post_id ) {
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if ( ! function_exists( 'imagettftext' ) ) {
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return false;
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}
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$p = ga_share_image_paths( $post_id );
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wp_mkdir_p( $p['dir'] );
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foreach ( glob( $p['glob'] ) ?: array() as $old ) {
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@unlink( $old ); // Versiones anteriores de este animal.
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}
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$w = 1200;
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$h = 630;
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$split = 630; // Ancho de la foto (cuadrada, a la izquierda).
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$img = imagecreatetruecolor( $w, $h );
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$primary = function_exists( 'ga_color' ) ? ga_color( 'primary' ) : '#401f0c';
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$accent = function_exists( 'ga_color' ) ? ga_color( 'accent' ) : '#bd8537';
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$surface = function_exists( 'ga_color' ) ? ga_color( 'surface' ) : '#f3ecdc';
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$bg = ga_hex_color( $img, $primary );
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imagefilledrectangle( $img, 0, 0, $w, $h, $bg );
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// Foto (recorte cuadrado centrado) o, si no hay, el símbolo del logo sobre fondo claro.
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$photo = get_post_thumbnail_id( $post_id ) ? get_attached_file( get_post_thumbnail_id( $post_id ) ) : '';
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$src = $photo ? ga_gd_load( $photo ) : false;
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if ( $src ) {
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$sw = imagesx( $src );
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$sh = imagesy( $src );
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$side = min( $sw, $sh );
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imagecopyresampled( $img, $src, 0, 0, (int) ( ( $sw - $side ) / 2 ), (int) ( ( $sh - $side ) / 3 ), $split, $h, $side, $side );
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imagedestroy( $src );
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} else {
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imagefilledrectangle( $img, 0, 0, $split, $h, ga_hex_color( $img, $surface ) );
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$mark = @imagecreatefrompng( __DIR__ . '/assets/logo-mark.png' );
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if ( $mark ) {
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$mw = 380;
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$mh = (int) ( imagesy( $mark ) * $mw / imagesx( $mark ) );
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imagecopyresampled( $img, $mark, (int) ( ( $split - $mw ) / 2 ), (int) ( ( $h - $mh ) / 2 ), 0, 0, $mw, $mh, imagesx( $mark ), imagesy( $mark ) );
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imagedestroy( $mark );
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}
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}
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// Texto a la derecha.
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$serif = __DIR__ . '/assets/fraunces-800.ttf';
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$sans = __DIR__ . '/assets/karla-600.ttf';
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$white = imagecolorallocate( $img, 255, 255, 255 );
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$gold = ga_hex_color( $img, $accent );
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$soft = ga_hex_color( $img, $surface );
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$x = $split + 56;
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$max = $w - $x - 50;
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$lang = function_exists( 'pll_get_post_language' ) ? pll_get_post_language( $post_id ) : 'es';
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$eu = 'eu' === $lang;
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imagettftext( $img, 17, 0, $x, 92, $gold, $sans, $eu ? 'BILAGUN · ADOPZIOA' : 'BILAGUN · ADOPCIÓN' );
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$name = get_the_title( $post_id );
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$size = 64;
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do {
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$lines = ga_gd_wrap( $name, $serif, $size, $max );
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$size -= 4;
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} while ( ( count( $lines ) > 2 ) && $size > 30 );
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$size += 4;
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$y = 190;
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foreach ( array_slice( $lines, 0, 3 ) as $line ) {
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imagettftext( $img, $size, 0, $x, $y, $white, $serif, $line );
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$y += (int) ( $size * 1.25 );
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}
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$status = ga_status( $post_id );
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$tag = 'proceso' === $status ? ( $eu ? 'Prozesuan' : 'En proceso de adopción' ) : ( $eu ? 'Familia bila' : 'Busca familia' );
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imagettftext( $img, 28, 0, $x, $y + 20, $soft, $sans, $tag );
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$host = wp_parse_url( home_url(), PHP_URL_HOST );
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imagettftext( $img, 18, 0, $x, $h - 60, $gold, $sans, $host );
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$mark = @imagecreatefrompng( __DIR__ . '/assets/logo-mark.png' );
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if ( $mark ) {
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$mw = 96;
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$mh = (int) ( imagesy( $mark ) * $mw / imagesx( $mark ) );
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imagecopyresampled( $img, $mark, $w - $mw - 44, $h - $mh - 44, 0, 0, $mw, $mh, imagesx( $mark ), imagesy( $mark ) );
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imagedestroy( $mark );
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}
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$ok = imagejpeg( $img, $p['file'], 86 );
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imagedestroy( $img );
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return $ok;
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}
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/* Se regenera al guardar (si cambió la foto o el nombre, cambia el nombre de archivo). */
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add_action( 'save_post_animal', function ( $post_id ) {
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if ( ! wp_is_post_revision( $post_id ) && 'publish' === get_post_status( $post_id ) ) {
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ga_share_image_url( $post_id );
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}
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}, 30 );
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/* Etiquetas Open Graph / Twitter con la imagen generada */
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add_action( 'wpseo_add_opengraph_images', function ( $container ) {
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if ( is_singular( 'animal' ) && ( $url = ga_share_image_url( get_queried_object_id() ) ) ) {
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$container->add_image( array( 'url' => $url, 'width' => 1200, 'height' => 630, 'type' => 'image/jpeg' ) );
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}
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} );
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add_filter( 'wpseo_opengraph_image', fn( $url ) => is_singular( 'animal' ) ? ( ga_share_image_url( get_queried_object_id() ) ?: $url ) : $url );
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add_filter( 'wpseo_twitter_image', fn( $url ) => is_singular( 'animal' ) ? ( ga_share_image_url( get_queried_object_id() ) ?: $url ) : $url );
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add_filter( 'wpseo_opengraph_image_width', fn( $v ) => is_singular( 'animal' ) ? 1200 : $v );
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add_filter( 'wpseo_opengraph_image_height', fn( $v ) => is_singular( 'animal' ) ? 630 : $v );
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add_filter( 'wpseo_twitter_card_type', fn( $v ) => is_singular( 'animal' ) ? 'summary_large_image' : $v );
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/* Sin Yoast: etiquetas mínimas propias */
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add_action( 'wp_head', function () {
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if ( defined( 'WPSEO_VERSION' ) || ! is_singular( 'animal' ) ) {
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return;
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}
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$id = get_queried_object_id();
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printf( '<meta property="og:title" content="%s">' . "\n", esc_attr( get_the_title( $id ) ) );
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printf( '<meta property="og:url" content="%s">' . "\n", esc_url( get_permalink( $id ) ) );
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printf( '<meta property="og:image" content="%s">' . "\n", esc_url( ga_share_image_url( $id ) ) );
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echo '<meta property="og:image:width" content="1200"><meta property="og:image:height" content="630"><meta name="twitter:card" content="summary_large_image">' . "\n";
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}, 5 );
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/* En la ficha del panel: vista previa y descarga (para publicarla en Instagram, etc.) */
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add_action( 'add_meta_boxes_animal', function ( $post ) {
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add_meta_box( 'ga_share', 'Compartir', function ( $post ) {
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if ( 'publish' !== $post->post_status ) {
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echo '<p class="description">Disponible cuando el animal esté publicado.</p>';
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return;
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}
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$url = ga_share_image_url( $post->ID );
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if ( $url ) {
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printf( '<p><img src="%1$s" alt="" style="width:100%%;height:auto;border-radius:4px"></p><p><a class="button" href="%1$s" download>Descargar imagen para redes</a></p>', esc_url( $url ) );
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}
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printf(
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'<p><a class="button" href="%s" target="_blank">Imprimir cartel con QR</a></p><p class="description">La imagen se crea sola con la foto principal y el nombre, y es la que aparece al compartir el enlace en WhatsApp o redes.</p>',
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esc_url( ga_poster_url( array( $post->ID ) ) )
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);
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}, 'animal', 'side', 'default' );
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} );
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/* -------------------------------------------------------------------------
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* Carteles con QR (para las jaulas, jornadas de adopción, etc.)
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* ---------------------------------------------------------------------- */
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function ga_poster_url( array $ids ) {
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return wp_nonce_url( admin_url( 'admin-post.php?action=ga_poster&ids=' . implode( ',', array_map( 'absint', $ids ) ) ), 'ga_poster' );
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}
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add_filter( 'post_row_actions', function ( $actions, $post ) {
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if ( 'animal' === $post->post_type && 'publish' === $post->post_status ) {
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$actions['ga_poster'] = sprintf( '<a href="%s" target="_blank">Cartel QR</a>', esc_url( ga_poster_url( array( $post->ID ) ) ) );
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}
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return $actions;
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}, 10, 2 );
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add_filter( 'bulk_actions-edit-animal', function ( $actions ) {
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$actions['ga_posters'] = 'Imprimir carteles con QR';
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return $actions;
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} );
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add_filter( 'handle_bulk_actions-edit-animal', function ( $redirect, $action, $ids ) {
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return 'ga_posters' === $action ? ga_poster_url( $ids ) : $redirect;
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}, 10, 3 );
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add_action( 'admin_post_ga_poster', function () {
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check_admin_referer( 'ga_poster' );
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if ( ! current_user_can( 'edit_posts' ) ) {
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wp_die( 'Sin permiso.' );
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}
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$ids = array_filter( array_map( 'absint', explode( ',', (string) ( $_GET['ids'] ?? '' ) ) ) );
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$ids = array_filter( $ids, fn( $id ) => 'animal' === get_post_type( $id ) && 'publish' === get_post_status( $id ) );
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if ( ! $ids ) {
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wp_die( 'No hay animales publicados seleccionados.' );
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}
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$primary = function_exists( 'ga_color' ) ? ga_color( 'primary' ) : '#401f0c';
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$accent = function_exists( 'ga_color' ) ? ga_color( 'accent' ) : '#bd8537';
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$logo = function_exists( 'ga_logo_svg' ) ? ga_logo_svg( 'full' ) : '';
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$fonts = content_url( 'themes/gure-ametsa/assets/fonts/' );
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?>
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<!doctype html>
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<html lang="es">
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<head>
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<meta charset="utf-8">
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<title>Carteles · Bilagun</title>
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<style>
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@font-face { font-family: Fraunces; src: url("<?php echo esc_url( $fonts . 'fraunces.woff2' ); ?>") format("woff2"); font-weight: 100 900; }
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@font-face { font-family: Karla; src: url("<?php echo esc_url( $fonts . 'karla.woff2' ); ?>") format("woff2"); font-weight: 100 900; }
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@page { size: A4; margin: 0; }
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* { box-sizing: border-box; }
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body { margin: 0; font-family: Karla, sans-serif; color: <?php echo esc_html( $primary ); ?>; background: #eee; }
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.bar { padding: 12px 20px; background: <?php echo esc_html( $primary ); ?>; color: #fff; display: flex; gap: 16px; align-items: center; }
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.bar button { font: 700 15px Karla, sans-serif; padding: 8px 18px; border-radius: 999px; border: 0; background: <?php echo esc_html( $accent ); ?>; cursor: pointer; }
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.poster { width: 210mm; height: 297mm; margin: 10mm auto; background: #fff; padding: 16mm; display: flex; flex-direction: column; page-break-after: always; }
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.photo { flex: 1; min-height: 0; border-radius: 6mm; overflow: hidden; background: #f3ecdc; display: grid; place-items: center; }
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.photo img { width: 100%; height: 100%; object-fit: cover; }
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.photo svg { width: 60%; height: auto; }
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h1 { font: 800 30mm/1 Fraunces, serif; margin: 9mm 0 3mm; letter-spacing: -0.02em; }
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.lead { font-size: 6mm; margin: 0 0 6mm; }
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.foot { display: flex; align-items: center; gap: 8mm; border-top: 0.6mm solid #e6d9b7; padding-top: 7mm; }
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.qr svg { width: 48mm; height: 48mm; display: block; }
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.cta { flex: 1; }
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.cta strong { display: block; font: 800 9mm/1.1 Fraunces, serif; }
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.cta span { display: block; font-size: 5mm; margin-top: 2mm; color: <?php echo esc_html( $accent ); ?>; word-break: break-all; }
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.logo svg { width: 34mm; height: auto; }
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@media print { body { background: #fff; } .bar { display: none; } .poster { margin: 0; } }
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</style>
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</head>
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<body>
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<div class="bar"><button onclick="window.print()">Imprimir</button> <?php echo count( $ids ); ?> cartel(es) · A4</div>
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<?php foreach ( $ids as $id ) : ?>
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<?php
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$photo = get_the_post_thumbnail_url( $id, 'large' );
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$lead = has_excerpt( $id ) ? get_the_excerpt( $id ) : '';
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?>
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<section class="poster">
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<div class="photo">
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<?php if ( $photo ) : ?>
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<img src="<?php echo esc_url( $photo ); ?>" alt="">
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<?php else : ?>
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<?php echo function_exists( 'ga_logo_svg' ) ? ga_logo_svg( 'mark' ) : ''; ?>
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<?php endif; ?>
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</div>
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<h1><?php echo esc_html( get_the_title( $id ) ); ?></h1>
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<?php if ( $lead ) : ?>
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<p class="lead"><?php echo esc_html( $lead ); ?></p>
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<?php endif; ?>
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<div class="foot">
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<div class="qr" data-qr="<?php echo esc_url( get_permalink( $id ) ); ?>"></div>
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<div class="cta">
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<strong>¿Quieres conocerme?<br>Ezagutu nahi nauzu?</strong>
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<span><?php echo esc_html( preg_replace( '#^https?://#', '', get_permalink( $id ) ) ); ?></span>
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</div>
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<div class="logo"><?php echo $logo; // SVG del tema. ?></div>
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</div>
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</section>
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<?php endforeach; ?>
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<script src="<?php echo esc_url( GA_QR_JS ); ?>" integrity="<?php echo esc_attr( GA_QR_SRI ); ?>" crossorigin="anonymous"></script>
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<script>
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document.querySelectorAll( '[data-qr]' ).forEach( function ( el ) {
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var qr = qrcode( 0, 'M' );
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qr.addData( el.dataset.qr );
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qr.make();
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el.innerHTML = qr.createSvgTag( { cellSize: 4, margin: 0, scalable: true } );
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} );
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</script>
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</body>
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</html>
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<?php
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exit;
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} );
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Reference in New Issue
Block a user