public static function getScaleForCrop(PhabricatorFile $file, $des_width, $des_height)
{
$metadata = $file->getMetadata();
$width = $metadata[PhabricatorFile::METADATA_IMAGE_WIDTH];
$height = $metadata[PhabricatorFile::METADATA_IMAGE_HEIGHT];
if ($height < $des_height) {
$scale = $height / $des_height;
} else {
if ($width < $des_width) {
$scale = $width / $des_width;
} else {
$scale_x = $des_width / $width;
$scale_y = $des_height / $height;
$scale = max($scale_x, $scale_y);
}
}
return $scale;
}
public function copyDimensions(PhabricatorFile $file)
{
$metadata = $file->getMetadata();
$width = idx($metadata, self::METADATA_IMAGE_WIDTH);
if ($width) {
$this->metadata[self::METADATA_IMAGE_WIDTH] = $width;
}
$height = idx($metadata, self::METADATA_IMAGE_HEIGHT);
if ($height) {
$this->metadata[self::METADATA_IMAGE_HEIGHT] = $height;
}
return $this;
}