/**
* @return IMAGE_METRICS
*/
public function metrics()
{
$Result = new IMAGE_METRICS();
$Result->set_image($this);
return $Result;
}
/**
* Return the width to use for the tag.
* @param MUNGER $munger The transformation context.
* @param string[] $attributes List of attributes for the tag
* (retrieved from the token).
* @return string
* @access private
*/
protected function _calculate_width($munger, $attributes)
{
/* Prefer scale over width, discarding invalid scale values.
* Retrieve width from the image only if scale is set or
* width is not set and an outer area was generated (we want
* to constrain the caption to the width of the image). */
$scale = read_array_index($attributes, 'scale');
$Result = read_array_index($attributes, 'width');
if ($scale) {
if (substr($scale, -1, 1) == '%') {
$scale = substr($scale, 0, -1);
}
if (!is_numeric($scale)) {
$scale = '';
}
}
if ($scale || !$Result && $this->_has_outer_area()) {
$attachment_name = read_array_index($attributes, 'attachment');
if ($attachment_name) {
$src = '{att_thumb}/' . $attachment_name;
} else {
$src = read_array_index($attributes, 'src');
}
$url = new URL($munger->resolve_url($src, Force_root_on));
if (!$url->has_domain() || $url->has_local_domain()) {
include_once 'webcore/util/image.php';
$metrics = new IMAGE_METRICS();
$metrics->set_url($url->as_text());
if ($metrics->loaded()) {
if ($scale) {
$Result = ceil($metrics->original_width * $scale / 100) . 'px';
} else {
$Result = $metrics->original_width . 'px';
}
} elseif ($scale) {
$Result = $scale . '%';
}
}
}
return $Result;
}
