Initial Ladill Give extraction — online giving pages at give.ladill.com.

Donation checkout via Ladill Pay (9% fee), church/giving QR pages, SSO, and platform scan forwarding. Co-authored-by: Cursor <cursoragent@cursor.com>
2026-06-09 07:25:49 +00:00
commit 0860b08af7
295 changed files with 37190 additions and 0 deletions
@@ -0,0 +1,93 @@
+<?php
+
+namespace App\Services\Qr;
+
+class QrPdfExporter
+{
+    public function fromPng(string $pngBinary, string $title): string
+    {
+        if (! extension_loaded('gd')) {
+            throw new \RuntimeException('PDF export requires the GD extension.');
+        }
+
+        $image = imagecreatefromstring($pngBinary);
+        if ($image === false) {
+            throw new \RuntimeException('Could not read QR image for PDF export.');
+        }
+
+        $width = imagesx($image);
+        $height = imagesy($image);
+        $canvas = imagecreatetruecolor($width, $height);
+        $white = imagecolorallocate($canvas, 255, 255, 255);
+        imagefilledrectangle($canvas, 0, 0, $width, $height, $white);
+        imagecopy($canvas, $image, 0, 0, 0, 0, $width, $height);
+        imagedestroy($image);
+
+        ob_start();
+        imagejpeg($canvas, null, 95);
+        $jpeg = (string) ob_get_clean();
+        imagedestroy($canvas);
+
+        return $this->buildPdf($jpeg, $title, $width, $height);
+    }
+
+    private function buildPdf(string $jpeg, string $title, int $imgW, int $imgH): string
+    {
+        $pageW = 595.28;
+        $pageH = 841.89;
+        $margin = 48;
+        $maxQr = min($pageW - ($margin * 2), 320);
+        $scale = min($maxQr / max(1, $imgW), $maxQr / max(1, $imgH));
+        $drawW = $imgW * $scale;
+        $drawH = $imgH * $scale;
+        $x = ($pageW - $drawW) / 2;
+        $y = 120;
+        $safeTitle = $this->pdfEscape(substr($title, 0, 80));
+
+        $objects = [];
+        $objects[] = "1 0 obj << /Type /Catalog /Pages 2 0 R >> endobj\n";
+        $objects[] = "2 0 obj << /Type /Pages /Kids [3 0 R] /Count 1 >> endobj\n";
+        $objects[] = sprintf(
+            "3 0 obj << /Type /Page /Parent 2 0 R /MediaBox [0 0 %.2F %.2F] /Resources << /Font << /F1 4 0 R >> /XObject << /Im1 5 0 R >> >> /Contents 6 0 R >> endobj\n",
+            $pageW,
+            $pageH,
+        );
+        $objects[] = "4 0 obj << /Type /Font /Subtype /Type1 /BaseFont /Helvetica-Bold >> endobj\n";
+        $objects[] = sprintf(
+            "5 0 obj << /Type /XObject /Subtype /Image /Width %d /Height %d /ColorSpace /DeviceRGB /BitsPerComponent 8 /Filter /DCTDecode /Length %d >> stream\n%s\nendstream\nendobj\n",
+            $imgW,
+            $imgH,
+            strlen($jpeg),
+            $jpeg,
+        );
+
+        $content = "BT /F1 16 Tf 48 " . ($pageH - 72) . " Td ({$safeTitle}) Tj ET\n";
+        $content .= sprintf("q %.4F 0 0 %.4F %.2F %.2F cm /Im1 Do Q\n", $drawW, $drawH, $x, $pageH - $y - $drawH);
+        $content .= "BT /F1 10 Tf 48 48 Td (Generated by Ladill QR Codes) Tj ET\n";
+        $objects[] = sprintf("6 0 obj << /Length %d >> stream\n%s\nendstream\nendobj\n", strlen($content), $content);
+
+        $pdf = "%PDF-1.4\n";
+        $offsets = [0];
+
+        foreach ($objects as $object) {
+            $offsets[] = strlen($pdf);
+            $pdf .= $object;
+        }
+
+        $xrefPos = strlen($pdf);
+        $pdf .= "xref\n0 " . count($offsets) . "\n";
+        $pdf .= "0000000000 65535 f \n";
+        for ($i = 1; $i < count($offsets); $i++) {
+            $pdf .= sprintf("%010d 00000 n \n", $offsets[$i]);
+        }
+        $pdf .= "trailer << /Size " . count($offsets) . " /Root 1 0 R >>\n";
+        $pdf .= "startxref\n{$xrefPos}\n%%EOF";
+
+        return $pdf;
+    }
+
+    private function pdfEscape(string $text): string
+    {
+        return str_replace(['\\', '(', ')'], ['\\\\', '\\(', '\\)'], $text);
+    }
+}