/**
* Resizes the image with the given id according to the configured max width and height settings
* renders a json response indicating success/failure and dies
*/
function bulk_resize_resize_image()
{
bulk_resize_verify_permission();
global $wpdb;
$id = intval($_POST['id']);
if (!$id) {
$results = array('success' => false, 'message' => 'Missing ID Parameter');
echo json_encode($results);
die;
}
// @TODO: probably doesn't need the join...?
$query = $wpdb->prepare("select\n\t\t\t\t\t{$wpdb->posts}.ID as ID,\n\t\t\t\t\t{$wpdb->posts}.guid as guid,\n\t\t\t\t\t{$wpdb->postmeta}.meta_value as file_meta\n\t\t\t\t\tfrom {$wpdb->posts}\n\t\t\t\t\tinner join {$wpdb->postmeta} on {$wpdb->posts}.ID = {$wpdb->postmeta}.post_id and {$wpdb->postmeta}.meta_key = %s\n\t\t\t\t\twhere {$wpdb->posts}.ID = %d\n\t\t\t\t\tand {$wpdb->posts}.post_type = %s\n\t\t\t\t\tand {$wpdb->posts}.post_mime_type like %s", array('_wp_attachment_metadata', $id, 'attachment', 'image%'));
$images = $wpdb->get_results($query);
if ($images) {
$image = $images[0];
$meta = unserialize($image->file_meta);
$uploads = wp_upload_dir();
$oldPath = $uploads['basedir'] . "/" . $meta['file'];
$maxW = bulk_resize_get_option('bulk_resize_max_width', _DEFAULT_MAX_WIDTH);
$maxH = bulk_resize_get_option('bulk_resize_max_height', _DEFAULT_MAX_HEIGHT);
if (file_exists($oldPath)) {
list($oldW, $oldH) = @getimagesize($oldPath);
}
if ($oldW > $maxW && $maxW > 0 || $oldH > $maxH && $maxH > 0) {
$quality = bulk_resize_get_option('bulk_resize_quality', _DEFAULT_QUALITY);
list($newW, $newH) = wp_constrain_dimensions($oldW, $oldH, $maxW, $maxH);
$resizeResult = image_resize($oldPath, $newW, $newH, false, null, null, $quality);
// $resizeResult = new WP_Error('invalid_image', __('Could not read image size'), $oldPath); // uncommend to debug fail condition
if (!is_wp_error($resizeResult)) {
$newPath = $resizeResult;
if ($newPath != $oldPath && file_exists($oldPath) && !is_dir($oldPath)) {
// remove original and replace with re-sized image
unlink($oldPath);
rename($newPath, $oldPath);
$meta['width'] = $newW;
$meta['height'] = $newH;
update_post_meta($image->ID, '_wp_attachment_metadata', $meta);
$results = array('success' => true, 'id' => $id, 'message' => '<strong>OK:</strong> ' . $oldPath);
}
} else {
$results = array('success' => false, 'id' => $id, 'message' => '<strong>ERROR:</strong> ' . $oldPath . ' (' . htmlentities($resizeResult->get_error_message()) . ')');
}
} else {
$results = array('success' => true, 'id' => $id, 'message' => '<strong>SKIPPED:</strong> <span style="color:#777;">' . $oldPath . '</span> <em style="color:#21759B">(Resize not required)</em>');
}
} else {
$results = array('success' => false, 'id' => $id, 'message' => '<strong>ERROR:</strong> (Attachment with ID of ' . htmlentities($id) . ' not found)');
}
echo json_encode($results);
die;
// required by wordpress
}
/**
* Render the site settings form. This is processed by
* WordPress built-in options persistance mechanism
*/
function bulk_resize_settings_page_form()
{
?>
<form method="post" action="options.php" style="width:300px; padding: 0 20px; margin: 20px 20px 0 0 ; float: left; background: #f6f6f6; border: 1px solid #e5e5e5; ">
<h2 style="margin-top: 0px;">Settings</h2>
<?php
settings_fields('bulk-resize-settings-group');
?>
<h4>Posts, Pages, Custom Post Types</h4>
W: <input type="text" style="width:40px;" name="bulk_resize_max_width" value="<?php
echo bulk_resize_get_option('bulk_resize_max_width', _DEFAULT_MAX_WIDTH);
?>
" />
/ H: <input type="text" style="width:40px;" name="bulk_resize_max_height" value="<?php
echo bulk_resize_get_option('bulk_resize_max_height', _DEFAULT_MAX_HEIGHT);
?>
" /> (Enter 0 to disable)
<h4>Images uploaded directly to the Media Library</h4>
W: <input type="text" style="width:40px;" name="bulk_resize_max_width_library" value="<?php
echo bulk_resize_get_option('bulk_resize_max_width_library', _DEFAULT_MAX_WIDTH);
?>
" />
/ H: <input type="text" style="width:40px;" name="bulk_resize_max_height_library" value="<?php
echo bulk_resize_get_option('bulk_resize_max_height_library', _DEFAULT_MAX_HEIGHT);
?>
" /> (Enter 0 to disable)
<h4>Images uploaded elsewhere (Theme headers, backgrounds, logos, etc)</h4>
W: <input type="text" style="width:40px;" name="bulk_resize_max_width_other" value="<?php
echo bulk_resize_get_option('bulk_resize_max_width_other', _DEFAULT_MAX_WIDTH);
?>
" />
/ H: <input type="text" style="width:40px;" name="bulk_resize_max_height_other" value="<?php
echo bulk_resize_get_option('bulk_resize_max_height_other', _DEFAULT_MAX_HEIGHT);
?>
" /> (Enter 0 to disable)
<h4>JPG image quality</h4>
<select name="bulk_resize_quality">
<?php
$q = bulk_resize_get_option('bulk_resize_quality', _DEFAULT_QUALITY);
for ($x = 50; $x <= 100; $x = $x + 10) {
echo "<option" . ($q == $x ? " selected='selected'" : "") . ">{$x}</option>";
}
?>
</select> (WordPress default is 90)
<h4>Convert BMP To JPG</h4>
<select name="bulk_resize_bmp_to_jpg">
<option <?php
if (bulk_resize_get_option('bulk_resize_bmp_to_jpg', _DEFAULT_BMP_TO_JPG) == "1") {
echo "selected='selected'";
}
?>
value="1">Yes</option>
<option <?php
if (bulk_resize_get_option('bulk_resize_bmp_to_jpg', _DEFAULT_BMP_TO_JPG) == "0") {
echo "selected='selected'";
}
?>
value="0">No</option>
</select>
<p class="submit"><input type="submit" class="button-primary" value="<?php
_e('Save Changes');
?>
" /></p>
</form>
<?php
}
/**
* If the uploaded image is a bmp this function handles the details of converting
* the bmp to a jpg, saves the new file and adjusts the params array as necessary
*
* @param array $params
*/
function bulk_resize_bmp_to_jpg($params)
{
include_once 'functions/imagecreatefrombmp.php';
$bmp = imagecreatefrombmp($params['file']);
// we need to change the extension from .bmp to .jpg so we have to ensure it will be a unique filename
$uploads = wp_upload_dir();
$oldFileName = basename($params['file']);
$newFileName = basename(str_ireplace(".bmp", ".jpg", $oldFileName));
$newFileName = wp_unique_filename($uploads['path'], $newFileName);
$quality = bulk_resize_get_option('bulk_resize_quality', _DEFAULT_QUALITY);
if (imagejpeg($bmp, $uploads['path'] . '/' . $newFileName, $quality)) {
// conversion succeeded. remove the original bmp & remap the params
unlink($params['file']);
$params['file'] = $uploads['path'] . '/' . $newFileName;
$params['url'] = $uploads['url'] . '/' . $newFileName;
$params['type'] = 'image/jpeg';
} else {
unlink($params['file']);
return wp_handle_upload_error($oldPath, "Oh Snap! Bulk Resize Media was Unable to process the BMP file. " . "If you continue to see this error you may need to disable the BMP-To-JPG " . "feature in Bulk Resize Media settings.");
}
return $params;
}
