in Admin: Metabox with thumbnail or medium image

I’ll look into switching over. I need to overhaul the css that controls it anywhere. Weird proportions can cause it to look odd.

// Made it work when commented out some css attributes
// Plus php, js changes bellow

#featuredgallerydiv ul li {
	margin:10px 10px 0 0;
	position:relative;
	/* width:100%; */
}

#featuredgallerydiv ul li {
	/* width:32%; */
/* 	margin-right:1%; */
	float:left;
}

#featuredgallerydiv ul li img {
	/* width:100%; */
	height:auto;
	display:block;
}

// PHP changes in metabox.php function fg_display_metabox()
// replace $galleryHTML lines with two lines, see

// $galleryHTML .= '<li>'.$button.'<img id="'.$id.'" src="'.wp_get_attachment_url( $id ).'"></li> ';
$image_attributes = wp_get_attachment_image_src( $id,'thumbnail' );
$galleryHTML .= '<li>'.$button.'<img id="'.$id.'" src="'. $image_attributes[0].'"></li> ';

// JS changes in admin.js#L79
// replace imageHTML

// imageHTML += '<li>'+button+'<img id="'+attachment.attributes.id+'" src="'+attachment.attributes.url+'"></li>';
imageHTML += '<li>'+button+'<img id="'+attachment.attributes.id+'" src="'+attachment.attributes.sizes.thumbnail.url+'"></li>';

I’ve made changes recently to the styling of the images to help things look better, but I am going to leave it using large images for now, because they look better in my opinion on high resolution screens. I may add a filter for this in the next release though.

I appreciate the feedback and the actual code suggestions.

Do you have the filter to the image size?
– ps: large images are too large ( ~1600px width..) for the admin display.