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<?php
namespace League\Glide\Manipulators;
use Intervention\Image\Image;
/**
* @property string $dpr
* @property string|null $fit
* @property string $h
* @property string $w
*/
class Size extends BaseManipulator
{
/**
* Maximum image size in pixels.
*
* @var int|null
*/
protected $maxImageSize;
/**
* Create Size instance.
*
* @param int|null $maxImageSize Maximum image size in pixels.
*/
public function __construct($maxImageSize = null)
{
$this->maxImageSize = $maxImageSize;
}
/**
* Set the maximum image size.
*
* @param int|null Maximum image size in pixels.
*
* @return void
*/
public function setMaxImageSize($maxImageSize)
{
$this->maxImageSize = $maxImageSize;
}
/**
* Get the maximum image size.
*
* @return int|null Maximum image size in pixels.
*/
public function getMaxImageSize()
{
return $this->maxImageSize;
}
/**
* Perform size image manipulation.
*
* @param Image $image The source image.
*
* @return Image The manipulated image.
*/
public function run(Image $image)
{
$width = $this->getWidth();
$height = $this->getHeight();
$fit = $this->getFit();
$dpr = $this->getDpr();
list($width, $height) = $this->resolveMissingDimensions($image, $width, $height);
list($width, $height) = $this->applyDpr($width, $height, $dpr);
list($width, $height) = $this->limitImageSize($width, $height);
if ((int) $width !== (int) $image->width() || (int) $height !== (int) $image->height() || 1.0 !== $this->getCrop()[2]) {
$image = $this->runResize($image, $fit, (int) $width, (int) $height);
}
return $image;
}
/**
* Resolve width.
*
* @return int|null The resolved width.
*/
public function getWidth()
{
if (!is_numeric($this->w)) {
return;
}
if ($this->w <= 0) {
return;
}
return (int) $this->w;
}
/**
* Resolve height.
*
* @return int|null The resolved height.
*/
public function getHeight()
{
if (!is_numeric($this->h)) {
return;
}
if ($this->h <= 0) {
return;
}
return (int) $this->h;
}
/**
* Resolve fit.
*
* @return string The resolved fit.
*/
public function getFit()
{
if (null === $this->fit) {
return 'contain';
}
if (in_array($this->fit, ['contain', 'fill', 'max', 'stretch', 'fill-max'], true)) {
return $this->fit;
}
if (preg_match('/^(crop)(-top-left|-top|-top-right|-left|-center|-right|-bottom-left|-bottom|-bottom-right|-[\d]{1,3}-[\d]{1,3}(?:-[\d]{1,3}(?:\.\d+)?)?)*$/', $this->fit)) {
return 'crop';
}
return 'contain';
}
/**
* Resolve the device pixel ratio.
*
* @return float The device pixel ratio.
*/
public function getDpr()
{
if (!is_numeric($this->dpr)) {
return 1.0;
}
if ($this->dpr < 0 or $this->dpr > 8) {
return 1.0;
}
return (float) $this->dpr;
}
/**
* Resolve missing image dimensions.
*
* @param Image $image The source image.
* @param int|null $width The image width.
* @param int|null $height The image height.
*
* @return int[] The resolved width and height.
*/
public function resolveMissingDimensions(Image $image, $width, $height)
{
if (is_null($width) and is_null($height)) {
$width = $image->width();
$height = $image->height();
}
if (is_null($width) || is_null($height)) {
$size = (new \Intervention\Image\Size($image->width(), $image->height()))
->resize($width, $height, function ($constraint) {
$constraint->aspectRatio();
});
$width = $size->getWidth();
$height = $size->getHeight();
}
return [
(int) $width,
(int) $height,
];
}
/**
* Apply the device pixel ratio.
*
* @param int $width The target image width.
* @param int $height The target image height.
* @param float $dpr The device pixel ratio.
*
* @return int[] The modified width and height.
*/
public function applyDpr($width, $height, $dpr)
{
$width = $width * $dpr;
$height = $height * $dpr;
return [
(int) round($width),
(int) round($height),
];
}
/**
* Limit image size to maximum allowed image size.
*
* @param int $width The image width.
* @param int $height The image height.
*
* @return int[] The limited width and height.
*/
public function limitImageSize($width, $height)
{
if (null !== $this->maxImageSize) {
$imageSize = $width * $height;
if ($imageSize > $this->maxImageSize) {
$width = $width / sqrt($imageSize / $this->maxImageSize);
$height = $height / sqrt($imageSize / $this->maxImageSize);
}
}
return [
(int) $width,
(int) $height,
];
}
/**
* Perform resize image manipulation.
*
* @param Image $image The source image.
* @param string $fit The fit.
* @param int $width The width.
* @param int $height The height.
*
* @return Image The manipulated image.
*/
public function runResize(Image $image, $fit, $width, $height)
{
if ('contain' === $fit) {
return $this->runContainResize($image, $width, $height);
}
if ('fill' === $fit) {
return $this->runFillResize($image, $width, $height);
}
if ('fill-max' === $fit) {
return $this->runFillMaxResize($image, $width, $height);
}
if ('max' === $fit) {
return $this->runMaxResize($image, $width, $height);
}
if ('stretch' === $fit) {
return $this->runStretchResize($image, $width, $height);
}
if ('crop' === $fit) {
return $this->runCropResize($image, $width, $height);
}
return $image;
}
/**
* Perform contain resize image manipulation.
*
* @param Image $image The source image.
* @param int $width The width.
* @param int $height The height.
*
* @return Image The manipulated image.
*/
public function runContainResize(Image $image, $width, $height)
{
return $image->resize($width, $height, function ($constraint) {
$constraint->aspectRatio();
});
}
/**
* Perform max resize image manipulation.
*
* @param Image $image The source image.
* @param int $width The width.
* @param int $height The height.
*
* @return Image The manipulated image.
*/
public function runMaxResize(Image $image, $width, $height)
{
return $image->resize($width, $height, function ($constraint) {
$constraint->aspectRatio();
$constraint->upsize();
});
}
/**
* Perform fill resize image manipulation.
*
* @param Image $image The source image.
* @param int $width The width.
* @param int $height The height.
*
* @return Image The manipulated image.
*/
public function runFillResize($image, $width, $height)
{
$image = $this->runMaxResize($image, $width, $height);
return $image->resizeCanvas($width, $height, 'center');
}
/**
* Perform fill-max resize image manipulation.
*
* @param Image $image The source image.
* @param int $width The width.
* @param int $height The height.
*
* @return Image The manipulated image.
*/
public function runFillMaxResize(Image $image, $width, $height)
{
$image = $image->resize($width, $height, function ($constraint) {
$constraint->aspectRatio();
});
return $image->resizeCanvas($width, $height, 'center');
}
/**
* Perform stretch resize image manipulation.
*
* @param Image $image The source image.
* @param int $width The width.
* @param int $height The height.
*
* @return Image The manipulated image.
*/
public function runStretchResize(Image $image, $width, $height)
{
return $image->resize($width, $height);
}
/**
* Perform crop resize image manipulation.
*
* @param Image $image The source image.
* @param int $width The width.
* @param int $height The height.
*
* @return Image The manipulated image.
*/
public function runCropResize(Image $image, $width, $height)
{
list($resize_width, $resize_height) = $this->resolveCropResizeDimensions($image, $width, $height);
$zoom = $this->getCrop()[2];
$image->resize($resize_width * $zoom, $resize_height * $zoom, function ($constraint) {
$constraint->aspectRatio();
});
list($offset_x, $offset_y) = $this->resolveCropOffset($image, $width, $height);
return $image->crop($width, $height, $offset_x, $offset_y);
}
/**
* Resolve the crop resize dimensions.
*
* @param Image $image The source image.
* @param int $width The width.
* @param int $height The height.
*
* @return array The resize dimensions.
*/
public function resolveCropResizeDimensions(Image $image, $width, $height)
{
if ($height > $width * ($image->height() / $image->width())) {
return [$height * ($image->width() / $image->height()), $height];
}
return [$width, $width * ($image->height() / $image->width())];
}
/**
* Resolve the crop offset.
*
* @param Image $image The source image.
* @param int $width The width.
* @param int $height The height.
*
* @return array The crop offset.
*/
public function resolveCropOffset(Image $image, $width, $height)
{
list($offset_percentage_x, $offset_percentage_y) = $this->getCrop();
$offset_x = (int) (($image->width() * $offset_percentage_x / 100) - ($width / 2));
$offset_y = (int) (($image->height() * $offset_percentage_y / 100) - ($height / 2));
$max_offset_x = $image->width() - $width;
$max_offset_y = $image->height() - $height;
if ($offset_x < 0) {
$offset_x = 0;
}
if ($offset_y < 0) {
$offset_y = 0;
}
if ($offset_x > $max_offset_x) {
$offset_x = $max_offset_x;
}
if ($offset_y > $max_offset_y) {
$offset_y = $max_offset_y;
}
return [$offset_x, $offset_y];
}
/**
* Resolve crop with zoom.
*
* @return (float|int)[] The resolved crop.
*
* @psalm-return array{0: int, 1: int, 2: float}
*/
public function getCrop()
{
$cropMethods = [
'crop-top-left' => [0, 0, 1.0],
'crop-top' => [50, 0, 1.0],
'crop-top-right' => [100, 0, 1.0],
'crop-left' => [0, 50, 1.0],
'crop-center' => [50, 50, 1.0],
'crop-right' => [100, 50, 1.0],
'crop-bottom-left' => [0, 100, 1.0],
'crop-bottom' => [50, 100, 1.0],
'crop-bottom-right' => [100, 100, 1.0],
];
if (null === $this->fit) {
return [50, 50, 1.0];
}
if (array_key_exists($this->fit, $cropMethods)) {
return $cropMethods[$this->fit];
}
if (preg_match('/^crop-([\d]{1,3})-([\d]{1,3})(?:-([\d]{1,3}(?:\.\d+)?))*$/', $this->fit, $matches)) {
$matches[3] = isset($matches[3]) ? $matches[3] : 1;
if ($matches[1] > 100 or $matches[2] > 100 or $matches[3] > 100) {
return [50, 50, 1.0];
}
return [
(int) $matches[1],
(int) $matches[2],
(float) $matches[3],
];
}
return [50, 50, 1.0];
}
}
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