📋 复制代码

<?php
/**
 * 图片圆角处理工具 - WordPress 后台插件版
 * 通过 WPCode 添加，支持圆角调整、WebP 保存
 */

if ( ! defined( 'ABSPATH' ) ) {
    exit;
}

add_action( 'admin_menu', 'rt_add_image_rounder_menu' );
function rt_add_image_rounder_menu() {
    add_menu_page(
        '图片圆角处理',
        '图片圆角',
        'upload_files',
        'rt-image-rounder',
        'rt_render_image_rounder_page',
        'dashicons-format-image',
        30
    );
}

add_action( 'wp_ajax_rt_save_rounded_image', 'rt_handle_save_rounded_image' );
function rt_handle_save_rounded_image() {
    if ( ! current_user_can( 'upload_files' ) ) {
        wp_send_json_error( [ 'message' => '无上传权限' ] );
    }

    if ( empty( $_FILES['rounded_image'] ) ) {
        wp_send_json_error( [ 'message' => '未收到图片文件' ] );
    }

    $file = $_FILES['rounded_image'];
    $file_name = sanitize_file_name( $_POST['filename'] ?? 'rounded_image.png' );

    $upload = wp_handle_upload( $file, [ 'test_form' => false, 'test_type' => false ] );

    if ( isset( $upload['error'] ) ) {
        wp_send_json_error( [ 'message' => $upload['error'] ] );
    }

    $uploaded_file = $upload['file'];
    $final_file    = $uploaded_file;
    $final_name    = $file_name;
    $final_type    = $upload['type'];
    $final_url     = $upload['url'];
    $converted     = false;

    // 尝试转换为 WebP
    $editor = wp_get_image_editor( $uploaded_file );
    if ( ! is_wp_error( $editor ) ) {
        $webp_upload = wp_upload_dir();
        $new_name    = pathinfo( $file_name, PATHINFO_FILENAME ) . '.webp';
        $new_path    = trailingslashit( $webp_upload['path'] ) . $new_name;

        $saved = $editor->save( $new_path, 'image/webp' );
        if ( ! is_wp_error( $saved ) && file_exists( $saved['path'] ) ) {
            @unlink( $uploaded_file );
            $final_file = $saved['path'];
            $final_name = $new_name;
            $final_type = 'image/webp';
            $final_url  = trailingslashit( $webp_upload['url'] ) . $new_name;
            $converted  = true;
        }
    }

    $attachment = [
        'guid'           => $final_url,
        'post_mime_type' => $final_type,
        'post_title'     => pathinfo( $final_name, PATHINFO_FILENAME ),
        'post_content'   => '',
        'post_status'    => 'inherit',
    ];

    $attach_id = wp_insert_attachment( $attachment, $final_file );
    if ( is_wp_error( $attach_id ) ) {
        wp_send_json_error( [ 'message' => $attach_id->get_error_message() ] );
    }

    require_once( ABSPATH . 'wp-admin/includes/image.php' );
    $attach_data = wp_generate_attachment_metadata( $attach_id, $final_file );
    wp_update_attachment_metadata( $attach_id, $attach_data );

    $msg = '图片已保存到媒体库';
    if ( $converted ) {
        $msg .= '（已自动转为 WebP 格式）';
    }

    wp_send_json_success( [
        'attach_id' => $attach_id,
        'url'       => $final_url,
        'message'   => $msg,
    ] );
}

function rt_render_image_rounder_page() {
    if ( ! current_user_can( 'upload_files' ) ) {
        wp_die( __( '您没有权限访问此页面。' ) );
    }

    wp_enqueue_media();
    ?>
    <div id="rt-wrapper" style="margin: 20px 20px 20px 0;">
        <!-- 样式与脚本省略，请使用完整代码 -->
    </div>
    <?php
}