View Source Pdf.Layout (ExPDF v1.0.1)

Layout helpers for positioning content in PDF documents.

Provides box/4, row/4, and column/4 containers that manage coordinates, padding, margin, and borders based on Pdf.Style.

Summary

Functions

box(page, arg1, arg2, opts \\ [], callback)

Render content inside a box with padding, margin, border, and optional background.

column(page, arg1, arg2, rows, opts \\ [])

Stack content vertically.

row(page, arg1, arg2, columns, opts \\ [])

Distribute content horizontally in columns.

Functions

Link to this function

box(page, arg1, arg2, opts \\ [], callback)

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Render content inside a box with padding, margin, border, and optional background.

The callback receives (page, %{x, y, width, height}) with the inner content area (after padding/margin are applied) and must return the updated page.

Example 

Layout.box(page, {50, 700}, {200, 100}, style: %{padding: 10, border: 1}, fn page, area ->
  Page.text_at(page, {area.x, area.y - 12}, "Inside box")
end)
Link to this function

column(page, arg1, arg2, rows, opts \\ [])

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Stack content vertically.

Takes a list of {height, callback} tuples. Each item is placed below the previous one.

Example 

Layout.column(page, {50, 700}, {400, 300}, [
  {20, fn page, area -> Page.text_at(page, {area.x, area.y - 12}, "Row 1") end},
  {20, fn page, area -> Page.text_at(page, {area.x, area.y - 12}, "Row 2") end}
])
Link to this function

row(page, arg1, arg2, columns, opts \\ [])

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Distribute content horizontally in columns.

Takes a list of {weight, callback} tuples. The available width is split proportionally by weight.

Example 

Layout.row(page, {50, 700}, {400, 100}, [
  {1, fn page, area -> Page.text_at(page, {area.x, area.y - 12}, "Left") end},
  {2, fn page, area -> Page.text_at(page, {area.x, area.y - 12}, "Center (2x wide)") end},
  {1, fn page, area -> Page.text_at(page, {area.x, area.y - 12}, "Right") end}
])