zcatpdf/examples/barcode_demo.zig

//! Barcode Demo - Code128 and QR barcodes
//!
//! Demonstrates barcode generation for product labels, shipping, URLs, etc.

const std = @import("std");
const zpdf = @import("zpdf");
const Pdf = zpdf.Pdf;
const Color = zpdf.Color;
const QRCode = zpdf.QRCode;

pub fn main() !void {
    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
    defer _ = gpa.deinit();
    const allocator = gpa.allocator();

    var pdf = Pdf.init(allocator, .{});
    defer pdf.deinit();

    pdf.setTitle("Barcode Demo");
    pdf.setAuthor("zpdf");

    var page = try pdf.addPage(.{});

    // Title
    try page.setFont(.helvetica_bold, 28);
    page.setFillColor(Color.hex(0x333333));
    try page.drawText(50, 780, "Barcode Demo");

    try page.setFont(.helvetica, 12);
    page.setFillColor(Color.hex(0x666666));
    try page.drawText(50, 760, "Code128 barcode generation with zpdf");

    // Reset to black for barcodes
    page.setFillColor(Color.black);
    try page.setFont(.helvetica, 10);

    // Section 1: Basic Barcodes
    try page.setFont(.helvetica_bold, 16);
    try page.drawText(50, 720, "Basic Code128 Barcodes");

    try page.setFont(.courier, 10);

    // Simple text
    try page.drawText(50, 690, "Product Code:");
    try page.drawCode128WithText(170, 650, "ABC-12345", 50, 1.5, true);

    // Numbers only (will use Code C for efficiency)
    try page.drawText(50, 580, "Serial Number:");
    try page.drawCode128WithText(170, 540, "9876543210", 50, 1.5, true);

    // Mixed content
    try page.drawText(50, 470, "SKU:");
    try page.drawCode128WithText(170, 430, "ITEM-2024-XYZ", 50, 1.5, true);

    // Section 2: Different Sizes
    try page.setFont(.helvetica_bold, 16);
    page.setFillColor(Color.black);
    try page.drawText(50, 370, "Different Sizes");

    try page.setFont(.courier, 10);

    // Small barcode
    try page.drawText(50, 340, "Small (0.8 module):");
    try page.drawCode128(170, 320, "SMALL", 30, 0.8);

    // Medium barcode
    try page.drawText(50, 280, "Medium (1.2 module):");
    try page.drawCode128(170, 250, "MEDIUM", 40, 1.2);

    // Large barcode
    try page.drawText(50, 200, "Large (2.0 module):");
    try page.drawCode128(170, 150, "LARGE", 60, 2.0);

    // Section 3: Real-world Examples
    try page.setFont(.helvetica_bold, 16);
    try page.drawText(350, 720, "Real-world Examples");

    try page.setFont(.helvetica, 10);

    // Shipping label
    try page.drawText(350, 690, "Shipping Label:");
    try page.drawCode128WithText(350, 640, "1Z999AA10123456784", 45, 1.2, true);

    // Invoice number
    try page.drawText(350, 580, "Invoice #:");
    try page.drawCode128WithText(350, 535, "INV-2024-00123", 40, 1.3, true);

    // ISBN-like
    try page.drawText(350, 470, "ISBN:");
    try page.drawCode128WithText(350, 425, "978-0-123456-78-9", 45, 1.2, true);

    // Warehouse location
    try page.drawText(350, 360, "Location:");
    try page.drawCode128WithText(350, 315, "A-12-B-34", 40, 1.5, true);

    // Section 4: QR Codes
    try page.setFont(.helvetica_bold, 16);
    page.setFillColor(Color.black);
    try page.drawText(350, 250, "QR Codes");

    try page.setFont(.helvetica, 10);

    // URL QR Code
    try page.drawText(350, 225, "Website URL:");
    try page.drawQRCode(350, 120, "HTTPS://GITHUB.COM", 100, QRCode.ErrorCorrection.M);

    // Simple text
    try page.drawText(480, 225, "Text Data:");
    try page.drawQRCode(480, 120, "HELLO WORLD", 100, QRCode.ErrorCorrection.H);

    // Footer
    try page.setFont(.helvetica_oblique, 10);
    page.setFillColor(Color.hex(0x999999));
    try page.drawText(50, 50, "Generated with zpdf - Code128 and QR Code Support");

    try pdf.save("barcode_demo.pdf");

    std.debug.print("Generated barcode_demo.pdf\n", .{});
}