Files
pdfcraft/crates/create
a047c6ba09 chore: resolve SonarCloud maintainability issues (#4356)
* chore: resolve SonarCloud maintainability issues

* fix(packaging): use verify_sha256 helper function

* style: cargo fmt

* fix: restore wildcard imports and fix method-reference type errors

Revert the glob-import expansions (they missed SomIndices and left unused
imports), revert char::is_ascii_digit where the iterator yields char by
value, and pass the content slice to prune_doomed_xobjects as &[Vec<u8>].

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

* Keep XObject decodability check without binding content in interp

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
Co-authored-by: Dylan Taylor <dylan@craftmaker.dev>
2026-10-23 23:28:18 -04:00
..

pdfcraft-create

Layer L4. Create a PDF (Acrobat's Create a PDF tool), execution plan M10.2:

  • blank(width, height, pages): an empty document;
  • from_images(&[(name, bytes)]): one page per image, sized from the image's resolution (PNG pHYs, JPEG JFIF density; 72 dpi when absent). JPEG data is embedded as is (/DCTDecode, grey, RGB or Adobe-inverted CMYK); PNG is decoded and stored with Flate, with transparency as a soft mask. An ICC profile in the file (JPEG APP2 ICC_PROFILE, PNG iCCP) that matches the image's colour space is kept as an /ICCBased colour space with the device space as /Alternate; images with the same profile share one profile object. JPEG metadata scanning skips marker fill bytes and reads application segments after the frame header, stopping at the first scan or end marker. Broken or mismatched ICC profiles still fall back to the device colour space;
  • from_images_with_resolution(images, ImageResolution::Dpi(dpi)): override the page resolution (1–1200 dpi), without resampling or recompressing image pixels. Use 72 dpi for one point per pixel, or ImageResolution::Embedded for the same behavior as from_images. The largest page side is still capped at 14,400 points;
  • from_text(text, …): plain text set in Helvetica, wrapped and paginated. Text Helvetica can't draw is refused, naming the line and the character, never set as ?.
  • from_text_escaped(text, …): the same for reports PdfCraft generates from documents (comment summaries, compare reports): such characters are written as [U+XXXX] and the first line says so (ESCAPED_NOTE).

Every function returns a pdfcraft_cos::Document; the caller writes it.

Image export and Save Image As apply each lossless image's Decode pair before converting its color components. Indexed Decode values select palette entries after rounding and clipping. Color-key masks compare the original samples. Missing, null or malformed Decode arrays keep the default mapping. The existing 16-bit path still uses each sample's high byte. JPEG and mask Decode handling remain limited. ICC transforms and calibrated color conversion remain outside this export path.