/**
* Resize the layer
*
* @param string $unit
* @param float $pourcentWidth
* @param float $pourcentHeight
* @param boolean $converseProportion
* @param integer $positionX
* @param integer $positionY
* @param string $position
*
* $position: http://phpimageworkshop.com/doc/22/corners-positions-schema-of-an-image.html
*
* $positionX, $positionY, $position can be ignored unless you choose a new width AND a new height AND to conserve proportion.
*/
public function resize($unit = "pixel", $newWidth = null, $newHeight = null, $converseProportion = false, $positionX = 0, $positionY = 0, $position = 'MM')
{
if ($newWidth || $newHeight) {
if ($unit == 'pourcent') {
if ($newWidth) {
$newWidth = round($newWidth / 100 * $this->width);
}
if ($newHeight) {
$newHeight = round($newHeight / 100 * $this->height);
}
}
if ($converseProportion) {
// Proportion are conserved
if ($newWidth && $newHeight) {
// Proportions + $newWidth + $newHeight
if ($this->getWidth() > $this->getHeight()) {
$this->resizeInPixel($newWidth, null, true);
if ($this->getHeight() > $newHeight) {
$this->resizeInPixel(null, $newHeight, true);
}
} else {
$this->resizeInPixel(null, $newHeight, true);
if ($this->getWidth() > $newWidth) {
$this->resizeInPixel($newWidth, null, true);
}
}
if ($this->getWidth() != $newWidth || $this->getHeight() != $newHeight) {
$layerTmp = new self(array('width' => $newWidth, 'height' => $newHeight));
$layerTmp->addLayer(1, $this, round($positionX * ($newWidth / 100)), round($positionY * ($newHeight / 100)), $position);
$this->width = $layerTmp->getWidth();
$this->height = $layerTmp->getHeight();
unset($this->image);
unset($this->layerLevels);
unset($this->layerPositions);
unset($this->layers);
$this->image = $layerTmp->getImage();
$this->layerLevels = $layerTmp->getLayerLevels();
$this->layerPositions = $layerTmp->getLayerPositions();
$this->layers = $layerTmp->getLayers();
unset($layerTmp);
}
return;
} elseif ($newWidth) {
$widthResizePourcent = $newWidth / ($this->width / 100);
$newHeight = round($widthResizePourcent / 100 * $this->height);
$heightResizePourcent = $widthResizePourcent;
} elseif ($newHeight) {
$heightResizePourcent = $newHeight / ($this->height / 100);
$newWidth = round($heightResizePourcent / 100 * $this->width);
$widthResizePourcent = $heightResizePourcent;
}
} elseif ($newWidth && !$newHeight || !$newWidth && $newHeight) {
// New width OR new height is given
if ($newWidth) {
$widthResizePourcent = $newWidth / ($this->width / 100);
$heightResizePourcent = 100;
$newHeight = $this->height;
} else {
$heightResizePourcent = $newHeight / ($this->height / 100);
$widthResizePourcent = 100;
$newWidth = $this->width;
}
} else {
// New width AND new height are given
$widthResizePourcent = $newWidth / ($this->width / 100);
$heightResizePourcent = $newHeight / ($this->height / 100);
}
// Update the layer positions in the stack
foreach ($this->layerPositions as $layerId => $layerPosition) {
$newPosX = round($widthResizePourcent / 100 * $layerPosition['x']);
$newPosY = round($heightResizePourcent / 100 * $layerPosition['y']);
$this->layerPositions[$layerId] = array("x" => $newPosX, "y" => $newPosY);
}
// Resize layers in the stack
$layers = $this->layers;
foreach ($layers as $key => $layer) {
$layer->resizeInPourcent($widthResizePourcent, $heightResizePourcent);
$this->layers[$key] = $layer;
}
// Resize the layer
$this->resizeBackground($newWidth, $newHeight);
}
}
