/**
* Calculate elements position using parent and posref
*
* @param ElementInterface $elm
*/
public function placeElement(ElementInterface $elm)
{
// element real bbox
$bbox = $elm->getBbox();
// element requested pos and size
list($nodeX, $nodeY) = $elm->getPos();
list($nodeW, $nodeH) = $elm->getSize();
if ($nodeW === null) {
$nodeW = $bbox[2];
}
if ($nodeH === null) {
$nodeH = $bbox[3];
}
// final size (only image is resized,
// text/polygon will not be clipped or resized)
$elm->setSize($nodeW, $nodeH);
$parent = $this->getParent($elm);
if (!empty($parent)) {
list($parentX, $parentY) = $parent->getPos();
list($parentW, $parentH) = $parent->getSize();
} else {
// root element
$parentX = 0;
$parentY = 0;
$parentW = $this->width;
$parentH = $this->height;
}
// first is parent, second is node
$posref = explode(' ', $elm->getPosref());
if (empty($posref)) {
$posref = array('TL', 'TL');
} elseif (empty($posref[1])) {
$posref[1] = 'TL';
}
// modify parent x/y so that x/y points to anchor
list($offsetX, $offsetY) = $this->evalPosref($posref[0], $parentW, $parentH);
$parentX += $offsetX;
$parentY += $offsetY;
// modify element x/y so that x/y points to anchor
list($offsetX, $offsetY) = $this->evalPosref($posref[1], $nodeW, $nodeH);
$x = $nodeX - $offsetX + $parentX;
$y = $nodeY - $offsetY + $parentY;
// final position
$elm->setPos($x, $y);
}
/**
* {@inheritdoc}
*/
public function add(ElementInterface $elm)
{
$id = $elm->getId();
$this->elements[$id] = $elm;
}