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Directory >> /home/softsuitetech/public_html/demoConstruction/vendor/bacon/bacon-qr-code/src/Renderer/Image/

File / Folder	Size	Action
.	-
EpsImageBackEnd.php	11.683KB	edt ren
ImageBackEndInterface.php	2.457KB	edt ren
ImagickImageBackEnd.php	10.112KB	edt ren
SvgImageBackEnd.php	12.314KB	edt ren
TransformationMatrix.php	1.993KB	edt ren

<?php
declare(strict_types = 1);

namespace BaconQrCode\Renderer\Image;

use BaconQrCode\Exception\RuntimeException;
use BaconQrCode\Renderer\Color\Alpha;
use BaconQrCode\Renderer\Color\ColorInterface;
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 XMLWriter;

final class SvgImageBackEnd implements ImageBackEndInterface
{
    private const PRECISION = 3;

/**
     * @var XMLWriter|null
     */
    private $xmlWriter;

/**
     * @var int[]|null
     */
    private $stack;

/**
     * @var int|null
     */
    private $currentStack;

/**
     * @var int|null
     */
    private $gradientCount;

public function __construct()
    {
        if (! class_exists(XMLWriter::class)) {
            throw new RuntimeException('You need to install the libxml extension to use this back end');
        }
    }

public function new(int $size, ColorInterface $backgroundColor) : void
    {
        $this->xmlWriter = new XMLWriter();
        $this->xmlWriter->openMemory();

$this->xmlWriter->startDocument('1.0', 'UTF-8');
        $this->xmlWriter->startElement('svg');
        $this->xmlWriter->writeAttribute('xmlns', 'http://www.w3.org/2000/svg');
        $this->xmlWriter->writeAttribute('version', '1.1');
        $this->xmlWriter->writeAttribute('width', (string) $size);
        $this->xmlWriter->writeAttribute('height', (string) $size);
        $this->xmlWriter->writeAttribute('viewBox', '0 0 '. $size . ' ' . $size);

$this->gradientCount = 0;
        $this->currentStack = 0;
        $this->stack[0] = 0;

$alpha = 1;

if ($backgroundColor instanceof Alpha) {
            $alpha = $backgroundColor->getAlpha() / 100;
        }

if (0 === $alpha) {
            return;
        }

$this->xmlWriter->startElement('rect');
        $this->xmlWriter->writeAttribute('x', '0');
        $this->xmlWriter->writeAttribute('y', '0');
        $this->xmlWriter->writeAttribute('width', (string) $size);
        $this->xmlWriter->writeAttribute('height', (string) $size);
        $this->xmlWriter->writeAttribute('fill', $this->getColorString($backgroundColor));

if ($alpha < 1) {
            $this->xmlWriter->writeAttribute('fill-opacity', (string) $alpha);
        }

$this->xmlWriter->endElement();
    }

public function scale(float $size) : void
    {
        if (null === $this->xmlWriter) {
            throw new RuntimeException('No image has been started');
        }

$this->xmlWriter->startElement('g');
        $this->xmlWriter->writeAttribute(
            'transform',
            sprintf('scale(%s)', round($size, self::PRECISION))
        );
        ++$this->stack[$this->currentStack];
    }

public function translate(float $x, float $y) : void
    {
        if (null === $this->xmlWriter) {
            throw new RuntimeException('No image has been started');
        }

$this->xmlWriter->startElement('g');
        $this->xmlWriter->writeAttribute(
            'transform',
            sprintf('translate(%s,%s)', round($x, self::PRECISION), round($y, self::PRECISION))
        );
        ++$this->stack[$this->currentStack];
    }

public function rotate(int $degrees) : void
    {
        if (null === $this->xmlWriter) {
            throw new RuntimeException('No image has been started');
        }

$this->xmlWriter->startElement('g');
        $this->xmlWriter->writeAttribute('transform', sprintf('rotate(%d)', $degrees));
        ++$this->stack[$this->currentStack];
    }

public function push() : void
    {
        if (null === $this->xmlWriter) {
            throw new RuntimeException('No image has been started');
        }

$this->xmlWriter->startElement('g');
        $this->stack[] = 1;
        ++$this->currentStack;
    }

public function pop() : void
    {
        if (null === $this->xmlWriter) {
            throw new RuntimeException('No image has been started');
        }

for ($i = 0; $i < $this->stack[$this->currentStack]; ++$i) {
            $this->xmlWriter->endElement();
        }

array_pop($this->stack);
        --$this->currentStack;
    }

public function drawPathWithColor(Path $path, ColorInterface $color) : void
    {
        if (null === $this->xmlWriter) {
            throw new RuntimeException('No image has been started');
        }

$alpha = 1;

if ($color instanceof Alpha) {
            $alpha = $color->getAlpha() / 100;
        }

$this->startPathElement($path);
        $this->xmlWriter->writeAttribute('fill', $this->getColorString($color));

if ($alpha < 1) {
            $this->xmlWriter->writeAttribute('fill-opacity', (string) $alpha);
        }

$this->xmlWriter->endElement();
    }

public function drawPathWithGradient(
        Path $path,
        Gradient $gradient,
        float $x,
        float $y,
        float $width,
        float $height
    ) : void {
        if (null === $this->xmlWriter) {
            throw new RuntimeException('No image has been started');
        }

$gradientId = $this->createGradientFill($gradient, $x, $y, $width, $height);
        $this->startPathElement($path);
        $this->xmlWriter->writeAttribute('fill', 'url(#' . $gradientId . ')');
        $this->xmlWriter->endElement();
    }

public function done() : string
    {
        if (null === $this->xmlWriter) {
            throw new RuntimeException('No image has been started');
        }

foreach ($this->stack as $openElements) {
            for ($i = $openElements; $i > 0; --$i) {
                $this->xmlWriter->endElement();
            }
        }

$this->xmlWriter->endDocument();
        $blob = $this->xmlWriter->outputMemory(true);
        $this->xmlWriter = null;
        $this->stack = null;
        $this->currentStack = null;
        $this->gradientCount = null;

return $blob;
    }

private function startPathElement(Path $path) : void
    {
        $pathData = [];

foreach ($path as $op) {
            switch (true) {
                case $op instanceof Move:
                    $pathData[] = sprintf(
                        'M%s %s',
                        round($op->getX(), self::PRECISION),
                        round($op->getY(), self::PRECISION)
                    );
                    break;

case $op instanceof Line:
                    $pathData[] = sprintf(
                        'L%s %s',
                        round($op->getX(), self::PRECISION),
                        round($op->getY(), self::PRECISION)
                    );
                    break;

case $op instanceof EllipticArc:
                    $pathData[] = sprintf(
                        'A%s %s %s %u %u %s %s',
                        round($op->getXRadius(), self::PRECISION),
                        round($op->getYRadius(), self::PRECISION),
                        round($op->getXAxisAngle(), self::PRECISION),
                        $op->isLargeArc(),
                        $op->isSweep(),
                        round($op->getX(), self::PRECISION),
                        round($op->getY(), self::PRECISION)
                    );
                    break;

case $op instanceof Curve:
                    $pathData[] = sprintf(
                        'C%s %s %s %s %s %s',
                        round($op->getX1(), self::PRECISION),
                        round($op->getY1(), self::PRECISION),
                        round($op->getX2(), self::PRECISION),
                        round($op->getY2(), self::PRECISION),
                        round($op->getX3(), self::PRECISION),
                        round($op->getY3(), self::PRECISION)
                    );
                    break;

case $op instanceof Close:
                    $pathData[] = 'Z';
                    break;

default:
                    throw new RuntimeException('Unexpected draw operation: ' . get_class($op));
            }
        }

$this->xmlWriter->startElement('path');
        $this->xmlWriter->writeAttribute('fill-rule', 'evenodd');
        $this->xmlWriter->writeAttribute('d', implode('', $pathData));
    }

private function createGradientFill(Gradient $gradient, float $x, float $y, float $width, float $height) : string
    {
        $this->xmlWriter->startElement('defs');

$startColor = $gradient->getStartColor();
        $endColor = $gradient->getEndColor();

if ($gradient->getType() === GradientType::RADIAL()) {
            $this->xmlWriter->startElement('radialGradient');
        } else {
            $this->xmlWriter->startElement('linearGradient');
        }

$this->xmlWriter->writeAttribute('gradientUnits', 'userSpaceOnUse');

switch ($gradient->getType()) {
            case GradientType::HORIZONTAL():
                $this->xmlWriter->writeAttribute('x1', (string) round($x, self::PRECISION));
                $this->xmlWriter->writeAttribute('y1', (string) round($y, self::PRECISION));
                $this->xmlWriter->writeAttribute('x2', (string) round($x + $width, self::PRECISION));
                $this->xmlWriter->writeAttribute('y2', (string) round($y, self::PRECISION));
                break;

case GradientType::VERTICAL():
                $this->xmlWriter->writeAttribute('x1', (string) round($x, self::PRECISION));
                $this->xmlWriter->writeAttribute('y1', (string) round($y, self::PRECISION));
                $this->xmlWriter->writeAttribute('x2', (string) round($x, self::PRECISION));
                $this->xmlWriter->writeAttribute('y2', (string) round($y + $height, self::PRECISION));
                break;

case GradientType::DIAGONAL():
                $this->xmlWriter->writeAttribute('x1', (string) round($x, self::PRECISION));
                $this->xmlWriter->writeAttribute('y1', (string) round($y, self::PRECISION));
                $this->xmlWriter->writeAttribute('x2', (string) round($x + $width, self::PRECISION));
                $this->xmlWriter->writeAttribute('y2', (string) round($y + $height, self::PRECISION));
                break;

case GradientType::INVERSE_DIAGONAL():
                $this->xmlWriter->writeAttribute('x1', (string) round($x, self::PRECISION));
                $this->xmlWriter->writeAttribute('y1', (string) round($y + $height, self::PRECISION));
                $this->xmlWriter->writeAttribute('x2', (string) round($x + $width, self::PRECISION));
                $this->xmlWriter->writeAttribute('y2', (string) round($y, self::PRECISION));
                break;

case GradientType::RADIAL():
                $this->xmlWriter->writeAttribute('cx', (string) round(($x + $width) / 2, self::PRECISION));
                $this->xmlWriter->writeAttribute('cy', (string) round(($y + $height) / 2, self::PRECISION));
                $this->xmlWriter->writeAttribute('r', (string) round(max($width, $height) / 2, self::PRECISION));
                break;
        }

$id = sprintf('g%d', ++$this->gradientCount);
        $this->xmlWriter->writeAttribute('id', $id);

$this->xmlWriter->startElement('stop');
        $this->xmlWriter->writeAttribute('offset', '0%');
        $this->xmlWriter->writeAttribute('stop-color', $this->getColorString($startColor));

if ($startColor instanceof Alpha) {
            $this->xmlWriter->writeAttribute('stop-opacity', $startColor->getAlpha());
        }

$this->xmlWriter->endElement();

$this->xmlWriter->startElement('stop');
        $this->xmlWriter->writeAttribute('offset', '100%');
        $this->xmlWriter->writeAttribute('stop-color', $this->getColorString($endColor));

if ($endColor instanceof Alpha) {
            $this->xmlWriter->writeAttribute('stop-opacity', $endColor->getAlpha());
        }

$this->xmlWriter->endElement();

$this->xmlWriter->endElement();
        $this->xmlWriter->endElement();

return $id;
    }

private function getColorString(ColorInterface $color) : string
    {
        $color = $color->toRgb();

return sprintf(
            '#%02x%02x%02x',
            $color->getRed(),
            $color->getGreen(),
            $color->getBlue()
        );
    }
}

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