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<?php
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namespace App\Http\Controllers\Api;
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use App\Http\Controllers\Controller;
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use BaconQrCode\Renderer\ImageRenderer;
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use BaconQrCode\Renderer\RendererStyle\RendererStyle;
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use BaconQrCode\Writer;
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use karmabunny\BaconBackends\GdImageBackEnd;
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use setasign\Fpdi\Fpdi;
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use SimpleSoftwareIO\QrCode\Facades\QrCode;
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class ToolController extends Controller
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{
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/**
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* @param array $data
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* @param string $message
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* @param int $status
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* @return string
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*/
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protected function success($data = [], $message = 'success', $status = 200)
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{
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$array = compact('status', 'message', 'data');
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return json_encode($array, JSON_UNESCAPED_UNICODE);
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}
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/**
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* @param int $status
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* @param string $message
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* @param array $data
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* @return string
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*/
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protected function error($message = 'error', $status = 400, $data = [])
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{
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$array = compact('status', 'message', 'data');
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return json_encode($array, JSON_UNESCAPED_UNICODE);
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}
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public function addQrToPdf()
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{
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$sourceFile = public_path('original.pdf');
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$qrText = 'https://www.bing.com';
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// 生成二维码图片
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$qrImage = public_path('qrcode_temp.png');
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$renderer = new ImageRenderer(
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new RendererStyle(300, 0),
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new GdImageBackEnd() // 使用 GD 后端
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);
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$writer = new Writer($renderer);
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// 生成 PNG 图片数据
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$writer->writeFile($qrText, $qrImage);
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$pdf = new Fpdi();
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$pageCount = $pdf->setSourceFile($sourceFile);
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for ($i = 1; $i <= $pageCount; $i++) {
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$tpl = $pdf->importPage($i);
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$size = $pdf->getTemplateSize($tpl);
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$pdf->AddPage($size['orientation'], [$size['width'], $size['height']]);
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$pdf->useTemplate($tpl);
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// ✅ 只在第一页添加二维码
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if ($i === 1) {
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$qrWidth = 30; // 二维码宽度（单位：mm）
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$margin = 5; // 距离边缘间距（mm）
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$x = $size['width'] - $qrWidth - $margin;
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$y = $margin;
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$pdf->Image($qrImage, $x, $y, $qrWidth);
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$text = 'Scan to verify the original MTC on official website';
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// 设置字体（必须设置，否则不显示）
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$pdf->SetFont('Arial', '', 8);
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// 计算文字位置
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$textY = $y + $qrWidth + 2; // 二维码下方2mm
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// 设置光标位置
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$pdf->SetXY($x - 1, $textY);
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// 固定宽度，自动换行
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$pdf->MultiCell($qrWidth + 10, 4, $text, 0, 'L');
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}
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}
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$outputFile = public_path('output.pdf');
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$pdf->Output('F', $outputFile);
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// 删除临时二维码图片
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unlink($qrImage);
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return $this->success(['pdf_file' => $outputFile]);
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}
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} |
...
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...
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