mupdf-1.24.0

[Bruce Dubbs]

New minor version.

[Bruce Dubbs]

List of changes in MuPDF 1.24 Error handling changes:

• You must call pdf_report_error in the final fz_catch. Any unreported errors will be automatically reported when a new error is raised, or when closing the fitz context.

New formats:

• Read Office (XML) files! We internally open and convert docx/pptx/xlsx documents to HTML to allow reading the plain text content. The exact layout will NOT be preserved.

• Optional compile time option to use libarchive for reading CBR and other archive formats.

• Read plain text documents.

• Read gzipped files directly.

• Open and read FDF files to support importing annotations or form data using the low-level PDF functions. There are no tools for this yet.

• Read CFB (Compound File Binary) format archives -- used for the Office formats.

• Write images as JPEG2000.

New tools and features:

• mutool bake (and associated functions) to bake appearance of annotations and forms into static content.

• Font subsetting flag to mutool clean (EXPERIMENTAL FEATURE).

• Option to use ObjStms when writing PDF files.

• Compression effort option when writing PDF files.

• Add option to control how line art is affected by redaction.

• Add more options to control how images are affected by redaction (remove-unless-invisible).

• Fix up q/Q gstate balance when cleaning content streams. New functions and types:

• pdf_rearrange_pages to subset or re-order pages in a PDF file.

• fz_invert_bitmap to invert monochrome bitmaps.

• fz_compressed_image_type to query the format of a compressed image.

• fz_text_decoder to convert various legacy and CJK encodings into UTF-8.

• More helper functions to easily manipulate PDF objects in C.

• Add flag to control fz_place_story overflow behavior when the text doesn't fit into the box.

• New archive handlers can be added at runtime.

Major bug fixes and improvements:

• Support using Art, Bleed, Media, and Trim boxes for PDF page size.

• Support ActualText in PDF! No more strange text extraction when the file uses ActualText to patch over bad font encodings.

• Add special TrueType fallback encoding CMap for a specific flavor of broken PDF files that use an "identity" encoding without embedding the font.

• Limited "transfer function" support in PDF. Transfer functions are a deprecated legacy PDF feature that predates proper color management. They were intended to provide limited color management such as applying a gamma curve. Transfer functions have often been (ab)-used to invert images, and many PDF creators use them when writing softmask images. We have added support for this case only.

• Box drawing characters added to fonts for HTML and plain text documents.

• Write more compact PDF files (removed some unneccessary whitespace).

• Improved selection behavior for non-axis aligned text.

• Improved heuristics for detecting the logical and visual order of RTL text in PDF.

• Improved heuristics for inserting missing spaces in PDF text.

• Improved handling of CMYK JPEG files (which ones are inverted and which are not).

• Improved content type detection. Don't assume everything is PDF when we can't recognize it.

Removed deprecated functions:

• pdf_check_signature

[Bruce Dubbs]

Fixed at commits

c9d29e2434 Update to mupdf-1.24.0.
0a889d4597 Update to SPIRV-Headers-1.3.280.0.