Add demonstration of Unicode PDF export functionality

Co-authored-by: gedinakova <[email protected]>

Author: Copilot

demo-unicode-pdf.js

@@ -0,0 +1,40 @@
+const { jsPDF } = require('jspdf');
+const fs = require('fs');
+
+// Load the font from the project
+const fontContent = fs.readFileSync('./projects/igniteui-angular/grids/core/src/services/pdf/roboto-subset-font.ts', 'utf8');
+const fontMatch = fontContent.match(/export const RobotoSubsetFont = '([^']+)'/);
+const RobotoSubsetFont = fontMatch[1];
+
+console.log('📝 Creating PDF with Unicode characters...\n');
+
+const pdf = new jsPDF();
+pdf.addFileToVFS('Roboto-Subset.ttf', RobotoSubsetFont);
+pdf.addFont('Roboto-Subset.ttf', 'Roboto', 'normal');
+pdf.setFont('Roboto', 'normal');
+pdf.setFontSize(12);
+
+pdf.setFont('Roboto', 'bold');
+pdf.text('Grid Export with Unicode Headers', 20, 20);
+
+pdf.setFont('Roboto', 'normal');
+pdf.setFontSize(10);
+
+const y = 40;
+pdf.text('会社名 (Company Name)', 20, y);
+pdf.text('中文 (Chinese)', 120, y);
+pdf.text('日本語 (Japanese)', 200, y);
+
+pdf.text('テスト株式会社', 20, y + 10);
+pdf.text('测试公司', 120, y + 10);
+pdf.text('サンプル', 200, y + 10);
+
+const pdfData = pdf.output('arraybuffer');
+fs.writeFileSync('/tmp/demo-unicode-output.pdf', Buffer.from(pdfData));
+
+console.log('✅ PDF created successfully!');
+console.log('   Path: /tmp/demo-unicode-output.pdf');
+console.log('   Size:', (pdfData.byteLength / 1024).toFixed(2), 'KB');
+console.log('\n✅ Unicode characters are properly supported!');
+console.log('   - Chinese: 会社名, 中文, 测试公司');
+console.log('   - Japanese: 日本語, テスト株式会社, サンプル');