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<?php
namespace Icinga\Module\Graphite\Web\Widget;
use Icinga\Module\Graphite\Graphing\Chart;
use Icinga\Web\Widget\AbstractWidget;
class InlineGraphImage extends AbstractWidget
{
/**
* The image to be rendered
*
* @var GraphImage
*/
protected $image;
/**
* The rendered <img>
*
* @var string|null
*/
protected $rendered;
/**
* Constructor
*
* @param Chart $chart The chart to be rendered
*/
public function __construct(Chart $chart)
{
$this->image = new GraphImage($chart);
}
/**
* Render the graph lazily
*
* @return string
*/
public function render()
{
if ($this->rendered === null) {
$this->rendered = '<img src="data:image/png;base64,'
. implode("\n", str_split(base64_encode($this->image->render()), 76))
. '">';
}
return $this->rendered;
}
}
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