function avia_backend_counter_color($color)
{
$color = avia_backend_hex_to_rgb_array($color);
foreach ($color as $key => $value) {
$color[$key] = (int) (255 - $value);
}
return avia_backend_get_hex_from_rgb($color[0], $color[1], $color[2]);
}
function avia_ajax_get_image_color()
{
#backend single post/page/portfolio item: add multiple preview pictures. get a preview picture via ajax request and display it
$colorString = "";
$attachment_id = (int) $_POST['attachment_id'];
if ($attachment_id != 0) {
$src = wp_get_attachment_image_src($attachment_id, array(5500, 5500));
$src = $src[0];
} else {
$src = $_POST['attachment_id'];
}
if (function_exists('imagecolorat')) {
$extension = substr($src, strrpos($src, '.') + 1);
switch ($extension) {
case 'jpeg':
$image = imagecreatefromjpeg($src);
break;
case 'jpg':
$image = imagecreatefromjpeg($src);
break;
case 'png':
$image = imagecreatefrompng($src);
break;
case 'gif':
$image = imagecreatefromgif($src);
break;
default:
die;
}
$rgb = imagecolorat($image, 0, 0);
$colors = imagecolorsforindex($image, $rgb);
$colorString = avia_backend_get_hex_from_rgb($colors['red'], $colors['green'], $colors['blue']);
}
die($colorString);
}
