Viewing file:  ImagickImageBackEnd.php (10.11 KB) -rwxr-x---
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<?php
declare(strict_types = 1);
namespace BaconQrCode\Renderer\Image;
use BaconQrCode\Exception\RuntimeException;
use BaconQrCode\Renderer\Color\Alpha;
use BaconQrCode\Renderer\Color\Cmyk;
use BaconQrCode\Renderer\Color\ColorInterface;
use BaconQrCode\Renderer\Color\Gray;
use BaconQrCode\Renderer\Color\Rgb;
use BaconQrCode\Renderer\Path\Close;
use BaconQrCode\Renderer\Path\Curve;
use BaconQrCode\Renderer\Path\EllipticArc;
use BaconQrCode\Renderer\Path\Line;
use BaconQrCode\Renderer\Path\Move;
use BaconQrCode\Renderer\Path\Path;
use BaconQrCode\Renderer\RendererStyle\Gradient;
use BaconQrCode\Renderer\RendererStyle\GradientType;
use Imagick;
use ImagickDraw;
use ImagickPixel;
final class ImagickImageBackEnd implements ImageBackEndInterface
{
/**
* @var string
*/
private $imageFormat;
/**
* @var int
*/
private $compressionQuality;
/**
* @var Imagick|null
*/
private $image;
/**
* @var ImagickDraw|null
*/
private $draw;
/**
* @var int|null
*/
private $gradientCount;
/**
* @var TransformationMatrix[]|null
*/
private $matrices;
/**
* @var int|null
*/
private $matrixIndex;
public function __construct(string $imageFormat = 'png', int $compressionQuality = 100)
{
if (! class_exists(Imagick::class)) {
throw new RuntimeException('You need to install the imagick extension to use this back end');
}
$this->imageFormat = $imageFormat;
$this->compressionQuality = $compressionQuality;
}
public function new(int $size, ColorInterface $backgroundColor) : void
{
$this->image = new Imagick();
$this->image->newImage($size, $size, $this->getColorPixel($backgroundColor));
$this->image->setImageFormat($this->imageFormat);
$this->image->setCompressionQuality($this->compressionQuality);
$this->draw = new ImagickDraw();
$this->gradientCount = 0;
$this->matrices = [new TransformationMatrix()];
$this->matrixIndex = 0;
}
public function scale(float $size) : void
{
if (null === $this->draw) {
throw new RuntimeException('No image has been started');
}
$this->draw->scale($size, $size);
$this->matrices[$this->matrixIndex] = $this->matrices[$this->matrixIndex]
->multiply(TransformationMatrix::scale($size));
}
public function translate(float $x, float $y) : void
{
if (null === $this->draw) {
throw new RuntimeException('No image has been started');
}
$this->draw->translate($x, $y);
$this->matrices[$this->matrixIndex] = $this->matrices[$this->matrixIndex]
->multiply(TransformationMatrix::translate($x, $y));
}
public function rotate(int $degrees) : void
{
if (null === $this->draw) {
throw new RuntimeException('No image has been started');
}
$this->draw->rotate($degrees);
$this->matrices[$this->matrixIndex] = $this->matrices[$this->matrixIndex]
->multiply(TransformationMatrix::rotate($degrees));
}
public function push() : void
{
if (null === $this->draw) {
throw new RuntimeException('No image has been started');
}
$this->draw->push();
$this->matrices[++$this->matrixIndex] = $this->matrices[$this->matrixIndex - 1];
}
public function pop() : void
{
if (null === $this->draw) {
throw new RuntimeException('No image has been started');
}
$this->draw->pop();
unset($this->matrices[$this->matrixIndex--]);
}
public function drawPathWithColor(Path $path, ColorInterface $color) : void
{
if (null === $this->draw) {
throw new RuntimeException('No image has been started');
}
$this->draw->setFillColor($this->getColorPixel($color));
$this->drawPath($path);
}
public function drawPathWithGradient(
Path $path,
Gradient $gradient,
float $x,
float $y,
float $width,
float $height
) : void {
if (null === $this->draw) {
throw new RuntimeException('No image has been started');
}
$this->draw->setFillPatternURL('#' . $this->createGradientFill($gradient, $x, $y, $width, $height));
$this->drawPath($path);
}
public function done() : string
{
if (null === $this->draw) {
throw new RuntimeException('No image has been started');
}
$this->image->drawImage($this->draw);
$blob = $this->image->getImageBlob();
$this->draw->clear();
$this->image->clear();
$this->draw = null;
$this->image = null;
$this->gradientCount = null;
return $blob;
}
private function drawPath(Path $path) : void
{
$this->draw->pathStart();
foreach ($path as $op) {
switch (true) {
case $op instanceof Move:
$this->draw->pathMoveToAbsolute($op->getX(), $op->getY());
break;
case $op instanceof Line:
$this->draw->pathLineToAbsolute($op->getX(), $op->getY());
break;
case $op instanceof EllipticArc:
$this->draw->pathEllipticArcAbsolute(
$op->getXRadius(),
$op->getYRadius(),
$op->getXAxisAngle(),
$op->isLargeArc(),
$op->isSweep(),
$op->getX(),
$op->getY()
);
break;
case $op instanceof Curve:
$this->draw->pathCurveToAbsolute(
$op->getX1(),
$op->getY1(),
$op->getX2(),
$op->getY2(),
$op->getX3(),
$op->getY3()
);
break;
case $op instanceof Close:
$this->draw->pathClose();
break;
default:
throw new RuntimeException('Unexpected draw operation: ' . get_class($op));
}
}
$this->draw->pathFinish();
}
private function createGradientFill(Gradient $gradient, float $x, float $y, float $width, float $height) : string
{
list($width, $height) = $this->matrices[$this->matrixIndex]->apply($width, $height);
$startColor = $this->getColorPixel($gradient->getStartColor())->getColorAsString();
$endColor = $this->getColorPixel($gradient->getEndColor())->getColorAsString();
$gradientImage = new Imagick();
switch ($gradient->getType()) {
case GradientType::HORIZONTAL():
$gradientImage->newPseudoImage((int) $height, (int) $width, sprintf(
'gradient:%s-%s',
$startColor,
$endColor
));
$gradientImage->rotateImage('transparent', -90);
break;
case GradientType::VERTICAL():
$gradientImage->newPseudoImage((int) $width, (int) $height, sprintf(
'gradient:%s-%s',
$startColor,
$endColor
));
break;
case GradientType::DIAGONAL():
case GradientType::INVERSE_DIAGONAL():
$gradientImage->newPseudoImage((int) ($width * sqrt(2)), (int) ($height * sqrt(2)), sprintf(
'gradient:%s-%s',
$startColor,
$endColor
));
if (GradientType::DIAGONAL() === $gradient->getType()) {
$gradientImage->rotateImage('transparent', -45);
} else {
$gradientImage->rotateImage('transparent', -135);
}
$rotatedWidth = $gradientImage->getImageWidth();
$rotatedHeight = $gradientImage->getImageHeight();
$gradientImage->setImagePage($rotatedWidth, $rotatedHeight, 0, 0);
$gradientImage->cropImage(
intdiv($rotatedWidth, 2) - 2,
intdiv($rotatedHeight, 2) - 2,
intdiv($rotatedWidth, 4) + 1,
intdiv($rotatedWidth, 4) + 1
);
break;
case GradientType::RADIAL():
$gradientImage->newPseudoImage((int) $width, (int) $height, sprintf(
'radial-gradient:%s-%s',
$startColor,
$endColor
));
break;
}
$id = sprintf('g%d', ++$this->gradientCount);
$this->draw->pushPattern($id, 0, 0, $width, $height);
$this->draw->composite(Imagick::COMPOSITE_COPY, 0, 0, $width, $height, $gradientImage);
$this->draw->popPattern();
return $id;
}
private function getColorPixel(ColorInterface $color) : ImagickPixel
{
$alpha = 100;
if ($color instanceof Alpha) {
$alpha = $color->getAlpha();
$color = $color->getBaseColor();
}
if ($color instanceof Rgb) {
return new ImagickPixel(sprintf(
'rgba(%d, %d, %d, %F)',
$color->getRed(),
$color->getGreen(),
$color->getBlue(),
$alpha / 100
));
}
if ($color instanceof Cmyk) {
return new ImagickPixel(sprintf(
'cmyka(%d, %d, %d, %d, %F)',
$color->getCyan(),
$color->getMagenta(),
$color->getYellow(),
$color->getBlack(),
$alpha / 100
));
}
if ($color instanceof Gray) {
return new ImagickPixel(sprintf(
'graya(%d%%, %F)',
$color->getGray(),
$alpha / 100
));
}
return $this->getColorPixel(new Alpha($alpha, $color->toRgb()));
}
}
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