Barcode PDF component — renders Code 128 barcodes onto a PDF.

This is a thin renderer. All encoding logic (standard and shaped) lives in ex_barcode. This component only scales and draws.

Standard barcode

Pdf.Component.Barcode.render(doc, {50, 700}, %{data: "ABC-12345", width: 200})

Shape barcode (creative barcode with silhouette + decorations)

Pdf.Component.Barcode.render(doc, {50, 700}, %{
  data: "SPOT2NITE", width: 250, height: 100, shape: :rv
})

Style options

Core

• :data — the string to encode (required)
• :width — barcode width in points (default 200)
• :height — bar height in points (default 50, or auto from aspect ratio)
• :color — bar color (default {0, 0, 0})
• :background — optional background color (standard barcodes only)
• :quiet_zone — modules of white space (default 10 standard, 2 shaped)

Text

• :show_text — render data below bars (default true)
• :font / :font_size / :text_color — text styling
• :label — optional title above barcode
• :label_font_size / :label_color — label styling

Image

• :image — path, URL, or {:binary, data}
• :image_size — {w, h} (default {40, 40})
• :image_position — :left, :right, :top (default :left)
• :image_gap — gap between image and barcode (default 8)
• :image_border_radius — rounded clip (default 0)

Shape (delegated to ExBarcode.Shape)

• :shape — predefined shape: :rv, :camper, :city, :wave, :diamond, :hill
• :contour_top — custom top contour [{x_pct, y_pct}, ...]
• :contour_bottom — custom bottom contour
• :bar_min_height — minimum bar fraction (default 0.0)
• :decoration_color — color for decorations (default same as :color)
• :decoration_stroke_color — stroke color for stroke decorations (default lighter)