142 lines
4.0 KiB
PHP
Executable File
142 lines
4.0 KiB
PHP
Executable File
<?php
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namespace AgeekDev\Barcode\Drivers;
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use AgeekDev\Barcode\AbstractGenerator;
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use AgeekDev\Barcode\BarcodeBar;
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use AgeekDev\Barcode\Exceptions\BarcodeException;
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use Imagick;
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use imagickdraw;
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use imagickpixel;
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use Spatie\Color\Hex;
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class PNG extends AbstractGenerator
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{
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protected bool $useImagick = true;
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/**
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* @throws BarcodeException
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*/
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public function __construct()
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{
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parent::__construct();
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// Auto switch between GD and Imagick based on what is installed
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if (extension_loaded('imagick')) {
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$this->useImagick = true;
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} elseif (function_exists('imagecreate')) {
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$this->useImagick = false;
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} else {
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throw new BarcodeException('Neither gd-lib or imagick are installed!');
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}
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}
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/**
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* Force the use of Imagick image extension.
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*/
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public function useImagick(): self
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{
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$this->useImagick = true;
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return $this;
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}
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/**
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* Force the use of the GD image library.
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*/
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public function useGd(): self
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{
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$this->useImagick = false;
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return $this;
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}
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/**
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* @param string $text code to print
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*
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* @throws \ImagickDrawException
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* @throws \ImagickException
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* @throws \ImagickPixelException
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*/
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public function generate(string $text): string
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{
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$barcodeData = $this->getBarcodeData($text, $this->type);
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$width = round($barcodeData->getWidth() * $this->widthFactor);
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$foregroundColor = $this->getForegroundColor();
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if ($this->useImagick) {
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$imagickBarsShape = new imagickdraw;
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$imagickBarsShape->setFillColor(new imagickpixel('rgb('.implode(',', $foregroundColor).')'));
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} else {
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$image = $this->createGdImageObject($width, $this->height);
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$gdForegroundColor = imagecolorallocate($image, $foregroundColor[0], $foregroundColor[1], $foregroundColor[2]);
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}
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// print bars
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$positionHorizontal = 0;
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/** @var BarcodeBar $bar */
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foreach ($barcodeData->getBars() as $bar) {
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$barWidth = round(($bar->getWidth() * $this->widthFactor), 3);
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if ($barWidth > 0 && $bar->isBar()) {
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$y = round(($bar->getPositionVertical() * $this->height / $barcodeData->getHeight()), 3);
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$barHeight = round(($bar->getHeight() * $this->height / $barcodeData->getHeight()), 3);
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// draw a vertical bar
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if ($this->useImagick) {
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$imagickBarsShape->rectangle($positionHorizontal, $y, ($positionHorizontal + $barWidth - 1), ($y + $barHeight));
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} else {
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imagefilledrectangle($image, $positionHorizontal, $y, ($positionHorizontal + $barWidth - 1), ($y + $barHeight), $gdForegroundColor);
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}
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}
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$positionHorizontal += $barWidth;
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}
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if ($this->useImagick) {
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$image = $this->createImagickImageObject($width, $this->height);
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$image->drawImage($imagickBarsShape);
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return $image->getImageBlob();
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}
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ob_start();
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$this->generateGdImage($image);
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return ob_get_clean();
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}
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public function getForegroundColor(): string|array
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{
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$color = Hex::fromString($this->foregroundColor)->toRgba();
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return [$color->red(), $color->blue(), $color->green()];
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}
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protected function createGdImageObject(int $width, int $height)
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{
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$image = imagecreate($width, $height);
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$colorBackground = imagecolorallocate($image, 255, 255, 255);
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imagecolortransparent($image, $colorBackground);
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return $image;
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}
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/**
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* @throws \ImagickException
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*/
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protected function createImagickImageObject(int $width, int $height): Imagick
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{
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$image = new Imagick;
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$image->newImage($width, $height, 'none', 'PNG');
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return $image;
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}
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protected function generateGdImage($image): void
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{
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imagepng($image);
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imagedestroy($image);
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}
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}
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