/**
* Process Imagick image stream request, e.g., for a PDF thumbnail
*
* Requires mla_stream_file (relative to wp_upload_dir ) in $_REQUEST;
* optional $_REQUEST parameters are:
* mla_stream_width, mla_stream_height, mla_stream_frame, mla_stream_resolution,
* mla_stream_quality, mla_stream_type, mla_stream_fit, mla_ghostscript_path
*
* @since 2.10
*
* @return void echos image content and calls exit();
*/
public static function mla_process_stream_image()
{
self::_mla_debug_add('MLAImageProcessor::mla_process_stream_image REQUEST = ' . var_export($_REQUEST, true));
if (!class_exists('Imagick')) {
self::_mla_die('Imagick not installed', __LINE__, 500);
}
if (ini_get('zlib.output_compression')) {
ini_set('zlib.output_compression', 'Off');
}
$file = $_REQUEST['mla_stream_file'];
if (!is_file($file)) {
self::_mla_die('File not found', __LINE__, 404);
}
$use_mutex = isset($_REQUEST['mla_single_thread']);
$width = isset($_REQUEST['mla_stream_width']) ? abs(intval($_REQUEST['mla_stream_width'])) : 0;
$height = isset($_REQUEST['mla_stream_height']) ? abs(intval($_REQUEST['mla_stream_height'])) : 0;
$type = isset($_REQUEST['mla_stream_type']) ? $_REQUEST['mla_stream_type'] : 'image/jpeg';
$quality = isset($_REQUEST['mla_stream_quality']) ? abs(intval($_REQUEST['mla_stream_quality'])) : 0;
$frame = isset($_REQUEST['mla_stream_frame']) ? abs(intval($_REQUEST['mla_stream_frame'])) : 0;
$resolution = isset($_REQUEST['mla_stream_resolution']) ? abs(intval($_REQUEST['mla_stream_resolution'])) : 72;
/*
* If mla_ghostscript_path is present, a non-standard GS location can be found in a file written by
* the [mla_gallery] shortcode processor.
*/
$ghostscript_path = isset($_REQUEST['mla_ghostscript_path']) ? $_REQUEST['mla_ghostscript_path'] : '';
if (!empty($ghostscript_path)) {
$ghostscript_path = @file_get_contents(dirname(__FILE__) . '/' . 'mla-ghostscript-path.txt');
}
if ($use_mutex) {
$temp_file = self::_get_temp_file();
@unlink($temp_file);
$temp_file = pathinfo($temp_file, PATHINFO_DIRNAME) . '/mla-mutex.txt';
$mutex = new MLAMutex();
$mutex->init(1, $temp_file);
$mutex->acquire();
self::_mla_debug_add('MLAImageProcessor::mla_process_stream_image begin file = ' . var_export($file, true));
}
/*
* Convert the file to an image format and load it
*/
try {
self::$image = new Imagick();
/*
* this must be called before reading the image, otherwise has no effect -
* "-density {$x_resolution}x{$y_resolution}"
* this is important to give good quality output, otherwise text might be unclear
* default resolution is 72,72
*/
self::$image->setResolution($resolution, $resolution);
//$result = false;
$result = self::_ghostscript_convert($file, $frame, $resolution, $type, $ghostscript_path);
if (false === $result) {
try {
self::$image->readImage($file . '[' . $frame . ']');
} catch (Exception $e) {
self::$image->readImage($file . '[0]');
}
if ('image/jpeg' == $type) {
$extension = 'JPG';
} else {
$extension = 'PNG';
}
self::$image->setImageFormat($extension);
}
if (!self::$image->valid()) {
self::_mla_die('File not loaded', __LINE__, 404);
}
} catch (Exception $e) {
self::_mla_die('Image load exception: ' . $e->getMessage(), __LINE__, 404);
}
/*
* Prepare the output image; resize and flatten, if necessary
*/
try {
if (isset($_REQUEST['mla_stream_fit'])) {
$best_fit = '1' == $_REQUEST['mla_stream_fit'];
} else {
$best_fit = false;
}
self::_prepare_image($width, $height, $best_fit, $type, $quality);
} catch (Exception $e) {
self::_mla_die('_prepare_image exception: ' . $e->getMessage(), __LINE__, 500);
}
/*
* Stream the image back to the requestor
*/
try {
header("Content-Type: {$type}");
echo self::$image->getImageBlob();
} catch (Exception $e) {
self::_mla_die('Image stream exception: ' . $e->getMessage(), __LINE__, 500);
}
if ($use_mutex) {
$mutex->release();
}
exit;
}
/**
* Process an MLA_List_Table custom bulk action
*
* Creates new items from the "Bulk Translate" list.
*
* @since 2.13
*
* @param array $item_content NULL, to indicate no handler.
* @param string $bulk_action the requested action.
* @param integer $post_id the affected attachment.
*
* @return object updated $item_content. NULL if no handler, otherwise
* ( 'message' => error or status message(s), 'body' => '' )
*/
public static function mla_list_table_custom_bulk_action($item_content, $bulk_action, $post_id)
{
if (self::MLA_GFI_ACTION != $bulk_action) {
return $item_content;
}
/* translators: 1: post ID */
$item_prefix = sprintf(__('Item %1$d', 'media-library-assistant'), $post_id) . ', ';
/*
* If there is a real thumbnail image, no generation is required or allowed
*/
$thumbnail = wp_get_attachment_image($post_id);
if (!empty($thumbnail)) {
return array('message' => $item_prefix . __('has native thumbnail.', 'media-library-assistant'));
}
/*
* Look for the "Featured Image" as an alternate thumbnail for PDFs, etc.
*/
$thumbnail = get_post_thumbnail_id($post_id);
if (!empty($thumbnail)) {
switch (self::$bulk_action_options['existing_thumbnails']) {
case 'ignore':
break;
case 'trash':
delete_post_thumbnail($post_id);
wp_delete_post(absint($thumbnail), false);
break;
case 'delete':
delete_post_thumbnail($post_id);
wp_delete_post(absint($thumbnail), true);
break;
case 'keep':
default:
return array('message' => $item_prefix . __('Featured Image retained.', 'media-library-assistant'));
}
}
/*
* Validate the file existance and type
*/
$file = get_attached_file($post_id);
if (empty($file)) {
/* translators: 1: ERROR tag 2: Item post ID */
return array('message' => sprintf(__('%1$s: %2$sno attached file.', 'media-library-assistant'), __('ERROR', 'media-library-assistant'), $item_prefix));
}
if (!in_array(strtolower(pathinfo($file, PATHINFO_EXTENSION)), array('ai', 'eps', 'pdf', 'ps'))) {
return array('message' => $item_prefix . __('unsupported file type.', 'media-library-assistant'));
}
/*
* Generate a thumbnail
*/
require_once MLA_PLUGIN_PATH . 'includes/class-mla-image-processor.php';
$results = MLAImageProcessor::mla_handle_thumbnail_sideload($file, self::$bulk_action_options);
if (!empty($results['error'])) {
/* translators: 1: ERROR tag 2: Item post ID */
return array('message' => sprintf(__('%1$s: %2$sthumbnail generation failed', 'media-library-assistant'), __('ERROR', 'media-library-assistant'), $item_prefix) . ' - ' . $results['error']);
}
/*
* Adjust the file name for the new item
*/
$pathinfo = pathinfo($results['name']);
if (isset(self::$bulk_action_options['suffix'])) {
$pathinfo['filename'] = sanitize_file_name($pathinfo['filename'] . strtolower(self::$bulk_action_options['suffix']));
}
$pathinfo['extension'] = 'image/jpeg' == $results['type'] ? 'jpg' : 'png';
$results['name'] = $pathinfo['filename'] . '.' . $pathinfo['extension'];
$overrides = array('test_form' => false, 'test_size' => true, 'test_upload' => true);
// move the temporary file into the uploads directory
$results = wp_handle_sideload($results, $overrides);
$item_data = get_post($post_id, ARRAY_A);
unset($item_data['ID']);
unset($item_data['post_author']);
unset($item_data['post_date']);
unset($item_data['post_date_gmt']);
if (isset(self::$bulk_action_options['suffix'])) {
$item_data['post_title'] .= self::$bulk_action_options['suffix'];
}
unset($item_data['post_name']);
unset($item_data['post_modified']);
unset($item_data['post_modified_gmt']);
$item_parent = $item_data['post_parent'];
unset($item_data['post_parent']);
$item_data['guid'] = $results['url'];
$item_data['post_mime_type'] = $results['type'];
unset($item_data['comment_count']);
unset($item_data['ancestors']);
unset($item_data['post_category']);
unset($item_data['tags_input']);
// Insert the attachment.
$item_id = wp_insert_attachment($item_data, $results['file'], $item_parent);
if (empty($item_id)) {
/* translators: 1: ERROR tag 2: Item post ID */
return array('message' => sprintf(__('%1$s: %2$swp_insert_attachment failed.', 'media-library-assistant'), __('ERROR', 'media-library-assistant'), $item_prefix));
}
// Make sure that this file is included, as wp_generate_attachment_metadata() depends on it.
require_once ABSPATH . 'wp-admin/includes/image.php';
// Generate the metadata for the attachment, and update the database record.
$item_data = wp_generate_attachment_metadata($item_id, $results['file']);
wp_update_attachment_metadata($item_id, $item_data);
// Assign the new item as the source item's Featured Image
delete_post_thumbnail($post_id);
set_post_thumbnail($post_id, $item_id);
MLA_Thumbnail::$bulk_action_includes[] = $item_id;
/* translators: 1: Item post ID, 2: new thumbnail item ID */
$item_content = array('message' => sprintf(__('%1$sthumbnail generated as new item %2$s.', 'media-library-assistant'), $item_prefix, $item_id));
return $item_content;
}
<?php
/**
* Stand-alone stream image handler for the mla_viewer
*
* @package Media Library Assistant
* @since 2.10
*/
/*
* Process mla_viewer image stream requests
*/
//@ini_set('error_log','C:\Program Files (x86)\Apache Software Foundation\Apache2.2\logs\php-errors.log');
require_once pathinfo(__FILE__, PATHINFO_DIRNAME) . '/class-mla-image-processor.php';
if (isset($_REQUEST['mla_stream_file'])) {
MLAImageProcessor::$mla_debug = isset($_REQUEST['mla_debug']) && 'log' == $_REQUEST['mla_debug'];
MLAImageProcessor::mla_process_stream_image();
}
MLAImageProcessor::_mla_die('mla_stream_file not set', __LINE__, 500);
