Module solver3

Expand description

CSS layout solver: block, inline, flex, grid, and table formatting. solver3/mod.rs

Next-generation CSS layout engine with proper formatting context separation

Re-exports§

cache: Handling Viewport Resizing and Layout Thrashing
calc: CSS calc() expression evaluator.
counters: CSS Counter Support
display_list: Generates a renderer-agnostic display list from a laid-out tree.
fc: Formatting context layout (block, inline, table, and flex/grid via Taffy)
geometry: Box model geometry types and writing-mode support for the layout solver.
getters: Centralized CSS property getters for the layout solver pipeline
layout_tree: Layout tree construction from a styled DOM, including anonymous box generation
paged_layout: CSS Paged Media layout integration with integrated fragmentation
pagination: CSS Paged Media Pagination Engine - “Infinite Canvas with Physical Spacers”
positioning: Final positioning of layout nodes (relative, absolute, and fixed schemes)
scrollbar: Scrollbar geometry computation — single source of truth for the layout solver.
sizing: Intrinsic and used size calculations for layout nodes
taffy_bridge: Bridge between Azul’s CSS style system and the Taffy layout engine.

POSITION_UNSET: Sentinel value for “position not yet computed”. No real position is ever f32::MIN.

SKIP_DISPLAY_LIST: Main entry point for the incremental, cached layout engine.

layout_document
new_position_vec: Create a new PositionVec pre-sized for the given number of nodes.
pos_contains: Check if position has been set for node index.
pos_get: Get position for node index, returning None if unset.
pos_set: Set position for node index. Grows the vec if needed.
set_skip_display_list: Set SKIP_DISPLAY_LIST. Provided as a function (rather than the caller touching the static directly) so the web backend’s dll-crate caller reaches it through a normal bl into this azul_layout function — keeping the static’s address computation intra-crate (direct adrp+add) instead of a cross-crate GOT load, which the AArch64→wasm lift mirrors more reliably.

NodeHashMap: A map of hashes for each node to detect changes in content like text.
PositionVec: Vec-based position storage indexed by layout-tree node index. Replaces BTreeMap<usize, LogicalPosition> for O(1) access and cache-friendly iteration.
Result