/**
* Import file into a new layer
*
* @param string $file
* @param int $mode
* @return \Phower\Image\Image
* @throws InvalidArgumentException
*/
public function import($file, $mode = LayersStack::APPEND_TOP, $position = LayerInterface::POSITION_MIDDLE_CENTER)
{
if (!is_readable($file)) {
throw new InvalidArgumentException('Unable to import source: ' . $file);
}
/* @var $adapter \Phower\Image\Adapter\AdapterInterface */
$callback = $this->getDefaultAdapter() . '::fromFile';
$adapter = call_user_func_array($callback, [$file]);
$layer = new Layer($adapter);
if (($this->width === null || $this->height === null) && $this->layers->count() === 0) {
$this->width = $layer->getWidth();
$this->height = $layer->getHeight();
} else {
$layer->align($this->width, $this->height, $position);
}
$this->layers->append($layer, $mode);
return $this;
}
public function testMoveDownMethodMovesCurrentLayerOnePositionDown()
{
$adapter = $this->getMockBuilder('Phower\\Image\\Adapter\\AdapterInterface')->getMock();
$layer1 = new Layer($adapter);
$layer1->setName('Layer 1');
$layer2 = new Layer($adapter);
$layer2->setName('Layer 2');
$layer3 = new Layer($adapter);
$layer3->setName('Layer 3');
$layers = new LayersStack();
$layers->append($layer1)->append($layer2)->append($layer3);
$this->assertEquals(0, $layers->key());
$this->assertEquals('Layer 3', $layers->current()->getName());
$layers->moveDown();
$this->assertEquals(1, $layers->key());
$this->assertEquals('Layer 3', $layers->current()->getName());
}
