Module pdf 

A tiny, self-contained PDF 1.7 writer for GridCraft’s print and PDF export.

• The 14 standard fonts (no embedding) with WinAnsiEncoding, plus approximate width tables (text_width) so callers can measure, align and wrap text. Characters outside WinAnsiEncoding (CJK and other scripts) are set in a predefined, non-embedded Adobe-GB1 CID font with the UniGB-UTF16-H CMap instead of being replaced by ?. Symbol uses its own built-in encoding (symbol_code), for Greek letters and mathematical operators.
• Vector drawing: rectangles, lines (solid or dashed), polygons, circles (Bézier), clipping.
• RGBA images as RGB image XObjects with a soft mask for alpha (run-length encoded).
• Coordinates are points with a top-left origin (y grows down); text y is the baseline.

Streams are written uncompressed (images use the trivial RunLengthDecode filter) so the crate needs no dependencies.

Structs

Info

Document metadata.

Page

A page under construction. Obtain one with PdfDoc::add_page.

PdfDoc

A PDF document under construction.

Point

A point in page coordinates, measured from the top-left corner.

Rect

A page-space rectangle described by its top-left corner and extent.

Enums

Family

A font family for Font::styled.

Font

The standard 14 fonts minus ZapfDingbats.

Functions

symbol_code

The Symbol-encoding code for c, or None when Symbol has no such glyph.

symbol_width

The advance width of code code in 1/1000 em, or None for an empty slot.

text_width

Width of text in points when set in font at size points.

win_ansi

Unicode → WinAnsiEncoding (CP1252) byte; unmappable characters become ?.

Type Aliases

Rgb

RGB colour, 0–255 per channel.