cosmic-text/CHANGELOG.md

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

[0.17.0] - 2026-01-29

Fixed

• Fix variable font weight for SwashCache::get_outline_commands()
• Allow fallback to fonts with mismatched stretch or style
• Shape as fake italic if no matching italic font exists
• Prevent line break opportunities from splitting ligatures

Changed

• Update all dependencies to latest versions

Removed

• Attrs::matches was removed as it is not compatible with new fallback logic

[0.16.0] - 2025-12-29

Added

• Add Renderer trait for more flexible rendering of buffers and editors
• Make hinting configurable with Hinting enum

Fixed

• Fix bench compilation
• Round x_advance to nearest monospace width when requested
• Do not use ASCII fast path when a word has incompatible spans

Changed

• Update harfrust to 0.4.1
• Update skrifa to 0.39.0

[0.15.0] - 2025-10-30

Added

• Add DISABLE_HINTING cache flag
• Variable font support
• Add pixel font flag
• Add ASCII fast path optimization to ShapeWord::build
• Optimize BidiParagraphs with ASCII fast path
• Add explicit lifetimes to borrowed return types
• Implement pixel-based scrolling for the Editor
• Add alignment paramater to set_text

Fixed

• Clip based on ascent and descent, not baseline
• Fix scroll when vertical offset is exactly layout_height
• Do not ignore font family
• Transform outline if fake italic provided
• Fixed Tab indenting the line instead of adding Tab or spaces
• Update and fix cargo-deny
• Fix UDHR link
• If buffer is empty, do not set line ending
• Better handling of newlines in editor insert and delete
• Improve handling of non-existant files in load_text
• Fix delete ranges removing interior newlines

Changed

• fontdb updated to 0.23
• Replace rustybuzz with HarfRust
• Use linebender_resource_handle instead of peniko
• Upgrade skrifa to 0.37

[0.14.2] - 2025-04-14

Fixed

• Ensure MSRV of 1.75.0

[0.14.1] - 2025-04-04

Added

• Allow font to be stored as peniko::Font with peniko feature

[0.14.0] - 2025-03-31

Added

• Add configurable font fallback lists using Fallback trait
• Add letter spacing support in Attrs
• Add arbitrary variable font features in Attrs

[0.13.2] - 2025-03-11

Fixed

• Fix build for Android targets

[0.13.1] - 2025-03-10

Fixed

• Fix glyph start+end indices in Basic shaping

[0.13.0] - 2025-03-10

Added

• Add Buffer::set_tab_width function
• Add AttrsList::spans_iter and use it in Buffer::append
• Add alignment option to Buffer::set_rich_text
• Add SwashCache::get_outline_commands_uncached

Fixed

• Fix typo in fallback font name Noto Sans CJK JP
• Fix the character index used for getting a glyph attribute in basic shaping
• Avoid debug assertion when handling Motion::BufferEnd
• Handle single wrapped line scrolling
• Reduce memory usage and loading time of FontSystem
• Resolve lints
• Use FreeMono as Braille script fallback
• Load fonts prior to setting defaults

Changed

• Use smol_str for family name in FamilyOwned
• Optimize Buffer::set_rich_text for when the buffer is reconstructed
• Move ShapeBuffer to FontSystem
• Cache the monospace fallbacks buffer in FontSystem
• Apply fallback font to more Unix-like operating systems
• Use hinting for swash_outline_commands
• Update swash to 0.2.0 and hook up std feature
• Update minimum supported Rust version to 1.75
• Update default fonts (for COSMIC, users should set their own as desired)

Removed

• Drop ShapePlanCache

[0.12.1] - 2024-06-31

Changed

• Make collection of monospace fallback information optional

[0.12.0] - 2024-06-18

Added

• Cache codepoint support info for monospace fonts
• Store a sorted list of monospace font ids in font system
• Add line ending abstraction
• Horizontal scroll support in Buffer
• Concurrently load and parse fonts
• Add metrics to attributes
• Support expanding tabs
• Add an option to set selected text color
• Add Edit::cursor_position
• Allow layout to be calculated without specifying width
• Allow for undefined buffer width and/or height
• Add method to set syntax highlighting by file extension

Fixed

• Fix no_std build
• Handle inverted Ranges in add_span
• Fix undo and redo updating editor modified status
• Ensure at least one line is in Buffer

Changed

• Enable vi feature for docs.rs build
• Convert editor example to winit
• Refactor scrollbar width handling for editor example
• Convert rich-text example to winit
• Only try monospace fonts that support at least one requested script
• Skip trying monospace fallbacks if default font supports all codepoints
• Make vertical scroll by pixels instead of layout lines
• Upgrade dependencies and re-export ttf-parser

[0.11.2] - 2024-02-08

Fixed

• Fix glyph start and end when using shape-run-cache

[0.11.1] - 2024-02-08

Added

• Add shape-run-cache feature, that can significantly improve shaping performance

Removed

• Remove editor-libcosmic, see cosmic-edit instead

[0.11.0] - 2024-02-07

Added

• Add function to set metrics and size simultaneously
• Cache rustybuzz shape plans
• Add capability to synthesize italic
• New wrapping option WordOrGlyph to allow word to glyph fallback

Fixed

• Buffer::set_rich_text: Only add attrs if they do not match the defaults
• Do not use Emoji fonts as monospace fallback
• Refresh the attrs more often in basic shaping
• Buffer: fix max scroll going one line beyond end
• Improve reliability of layout_cursor
• Handle multiple BiDi paragraphs in ShapeLine gracefully
• Improved monospace font fallback
• Only commit a previous word range if we had an existing visual line

Changed

• Update terminal example using colored
• Significant improvements for Editor, SyntaxEditor, and ViEditor
• Require default Attrs to be specified in Buffer::set_rich_text
• Bump fontdb to 0.16
• Allow Clone of layout structs
• Move cursor motions to new Motion enum, move handling to Buffer
• Ensure that all shaping and layout uses scratch buffer
• BufferLine: user layout_in_buffer to implement layout
• BufferLine: remove wrap from struct, as wrap is passed to layout
• Refactor of scroll and shaping
• Move color and x_opt out of Cursor
• Add size limit to font_matches_cache and clear it when it is reached
• Update swash to 0.1.12
• Set default buffer wrap to WordOrGlyph

Removed

• Remove patch to load Redox system fonts, as fontdb does it now

[0.10.0] - 2023-10-19

Added

• Added Buffer::set_rich_text method
• Add Align::End for end-based alignment
• Add more Debug implementations
• Add feature to warn on missing glyphs
• Add easy conversions for tuples/arrays for Color
• Derive Clone for AttrsList
• Add feature to allow fontdb to get fontconfig information
• Add benchmarks to accurately gauge improvements
• Add image render tests
• Allow BSD-2-Clause and BSD-3-Clause licneses in cargo-deny

Fixed

• Fix no_std build
• Fix BufferLine::set_align docs to not mention shape reset is performed
• Fix width computed during unconstrained layout and add test for it
• Set cursor_moved to true in Editor::insert_string
• Fix NextWord action in Editor when line ends with word boundaries
• Fix building editor-libcosmic with vi feature
• Respect fontconfig font aliases when enabled
• Fix rendering of RTL words

Changed

• Unify no_std and std impls of FontSystem
• Move hashbrown behind no_std feature
• Require either std or no_std feature to be specified
• Use a scratch buffer to reduce allocations
• Enable std feature with fontconfig feature
• Enable fontconfig feature by default
• Refactor code in ShapeLine::layout
• Set MSRV to 1.65
• Make Edit::copy_selection immutable
• Rewrite PreviousWord logic in Editor with iterators
• Use attributes at cursor position for insertions in Editor
• Update all dependencies
• Use self_cell for creating self-referential struct

[0.9.0] - 2023-07-06

Added

• Add Shaping enum to allow selecting the shaping strategy
• Add Buffer::new_empty to create Buffer without FontSystem
• Add BidiParagraphs iterator
• Allow setting Cursor color
• Allow setting Editor cursor
• Add PhysicalGlyph that allows computing CacheKey after layout
• Add light syntax highlighter to libcosmic example

Fixed

• Fix WebAssembly support
• Fix alignment when not wrapping
• Fallback to monospaced font if Monospace family is not found
• Align glyphs in a LayoutRun to baseline

Changed

• Update fontdb to 0.14.1
• Replace ouroboros with aliasable
• Use BidiParagraphs iterator instead of str::Lines
• Update libcosmic version

Removed

• LayoutGlyph no longer has x_int and y_int, use PhysicalGlyph instead

[0.8.0] - 2023-04-03

Added

• FontSystem::new_with_fonts helper
• Alignment and justification
• FontSystem::db_mut provides mutable access to fontdb database
• rustybuzz is re-exported

Fixed

• Fix some divide by zero panics
• Redox now uses std FontSystem
• Layout system improvements
• BufferLinke::set_text has been made more efficient
• Fix potential panic on window resize

Changed

• Use f32 instead of i32 for lengths
• FontSystem no longer self-referencing
• SwashCash no longer keeps reference to FontSystem

Removed

• Attrs::monospaced is removed, use Family::Monospace instead