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<?php
/**
* @package dompdf
* @link https://github.com/dompdf/dompdf
* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
*/
namespace Dompdf\FrameDecorator;
use Dompdf\Dompdf;
use Dompdf\Frame;
use Dompdf\Helpers;
use Dompdf\Image\Cache;
/**
* Decorates frames for image layout and rendering
*
* @package dompdf
*/
class Image extends AbstractFrameDecorator
{
/**
* The path to the image file (note that remote images are
* downloaded locally to Options:tempDir).
*
* @var string
*/
protected $_image_url;
/**
* The image's file error message
*
* @var string
*/
protected $_image_msg;
/**
* Class constructor
*
* @param Frame $frame the frame to decorate
* @param DOMPDF $dompdf the document's dompdf object (required to resolve relative & remote urls)
*/
function __construct(Frame $frame, Dompdf $dompdf)
{
parent::__construct($frame, $dompdf);
$url = $frame->get_node()->getAttribute("src");
$debug_png = $dompdf->getOptions()->getDebugPng();
if ($debug_png) {
print '[__construct ' . $url . ']';
}
list($this->_image_url, /*$type*/, $this->_image_msg) = Cache::resolve_url(
$url,
$dompdf->getProtocol(),
$dompdf->getBaseHost(),
$dompdf->getBasePath(),
$dompdf->getOptions()
);
if (Cache::is_broken($this->_image_url) &&
$alt = $frame->get_node()->getAttribute("alt")
) {
$fontMetrics = $dompdf->getFontMetrics();
$style = $frame->get_style();
$font = $style->font_family;
$size = $style->font_size;
$word_spacing = $style->word_spacing;
$letter_spacing = $style->letter_spacing;
$style->width = (4 / 3) * $fontMetrics->getTextWidth($alt, $font, $size, $word_spacing, $letter_spacing);
$style->height = $fontMetrics->getFontHeight($font, $size);
}
}
/**
* Get the intrinsic pixel dimensions of the image.
*
* @return array Width and height as `float|int`.
*/
public function get_intrinsic_dimensions(): array
{
[$width, $height] = Helpers::dompdf_getimagesize($this->_image_url, $this->_dompdf->getHttpContext());
return [$width, $height];
}
/**
* Resample the given pixel length according to dpi.
*
* @param float|int $length
* @return float
*/
public function resample($length): float
{
$dpi = $this->_dompdf->getOptions()->getDpi();
return ($length * 72) / $dpi;
}
/**
* Return the image's url
*
* @return string The url of this image
*/
function get_image_url()
{
return $this->_image_url;
}
/**
* Return the image's error message
*
* @return string The image's error message
*/
function get_image_msg()
{
return $this->_image_msg;
}
}
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