v0.0.3

Blanket 0.0.3 adds drawing and text, image expressions, public color helpers, and runtime codec diagnostics. It also expands the Image API and improves native processing across image modes.

New features

• ImageDraw: Draw points, lines, rectangles, rounded rectangles, ellipses, arcs, chords, pieslices, and polygons. Includes optional antialiasing, translucent drawing on RGB images, bitmap drawing, and flood fill.
• Text drawing: Measure and draw single-line and multiline text with anchors, alignment, spacing, and strokes. A built-in bitmap font works without extra dependencies; compatible font objects, including explicitly supplied Pillow fonts, are also supported.
• ImageMath: Evaluate arithmetic, bitwise operations, comparisons, and conversions over single-band images with lambda_eval() and unsafe_eval(). Pixel calculations run in Rust, with parallel execution for large images.
• ImageColor: Use getrgb() and getcolor() to turn CSS color strings into RGB/RGBA tuples or mode-specific pixel values.
• Runtime diagnostics: The new features module provides check(), version(), get_supported(), and blanketinfo() to inspect codec availability, backend versions, and HEIF encoder/decoder support.
• More Image methods: Adds show(), verify(), draft(), getim(), im, remap_palette(), tobitmap(), and effect_spread(). show() supports a custom viewer through BLANKET_IMAGE_VIEWER.

Fixes and processing improvements

• Correct integer and floating-point conversions, including full-precision grayscale samples, 16-bit saturation and byte order, and independent output storage.
• Correct cropped scalar-image resizing and vertical reduction so intermediate results do not include unrelated rows or previous row sums.
• Improve neighborhood filtering across channels, large windows, image edges, and custom filter subclasses.
• Improve flood-fill coverage and drawing on independent images from multiple threads.
• Keep earlier winning PNG candidates during extended lossy-compression searches.
• Reduce metadata parsing allocations by skipping large pixel payloads in JPEG, PNG, and JPEG XL files.
• Expand portable SIMD kernels and parallel integer conversions; optimize packed-pixel operations, image math, resampling, filtering, and quantization.

Build and compatibility notes

• Source builds now require the nightly Rust toolchain pinned in rust-toolchain.toml for portable SIMD. Native operations, codecs, and compression are split into focused workspace crates.
• Update PyO3 to 0.30 and refresh native dependencies. Fix macOS linking by removing an unsupported linker flag.
• Drawing rasterization and the built-in font can differ from Pillow. draft() is a compatibility no-op because decoding is eager; getim() and im expose Blanket's native image object.
• ImageMath.unsafe_eval() and its eval() alias evaluate Python expressions and require trusted input. Prefer lambda_eval() for callable expressions.

Installation

Requires Python 3.12+:

pip install --upgrade pyblanket==0.0.3

Release assets include wheels for Linux x86_64 and ARM64 (glibc 2.39+), macOS 26+ on Apple Silicon, and a source distribution.

Full changelog: v0.0.2...v0.0.3