hyper_render_core 1.1.0

Core engine for HyperRender. Universal Document Tree, single-RenderObject layout with CSS float, Flexbox, Grid, CJK typography, and crash-free text selection.

Changelog — hyper_render_core

1.1.0 - 2026-03-20

✨ New Features (synced from hyper_render)

• CSS: Box shadow, linear-gradient, advanced border styles (dashed/dotted)
• CSS: Full Flexbox support (direction, wrap, gap, align-self, grow/shrink/basis)
• CSS: CSS Variables var(), transition, animation-* parsing
• CSS: computed_style expanded with 120+ additional properties
• Style: resolver.dart expanded — specificity engine, cascade improvements
• Widgets: HyperRenderWidget — adaptive selection colors, theme-aware; new enableComplexFilters flag to gate saveLayer calls for backdrop-filter/filter effects
• Widgets: HyperSelectionOverlay — improved handle rendering with tight bounding boxes
• Widgets: GridContainerWidget — CSS Grid layout with grid-template-columns, span, gap
• Rendering: render_hyper_box_layout.dart — float algorithm improvements; O(1) _fragmentChildMap child lookup; O(1) _nodeRectCache accessibility rect lookup
• Rendering: render_hyper_box_paint.dart — retina-ready images, anti-aliasing; _fragmentChildMap replaces O(N) linear scan
• Rendering: render_media.dart — enhanced error boundaries
• Performance: _buildNodeRectCache() builds O(1) accessibility rects during layout (Step 8), depth-capped at 32 levels

🐛 Bug Fixes

• Selection: getSelectedText() now inserts \n at block element boundaries (_BlockEndFragment) so copied text respects paragraph/list structure
• Selection: getSelectionRects() uses getBoxesForSelection with tight bounding boxes for accurate highlight rendering
• Layout (Bug 1): characterOffset no longer adds trimmedLeading to second fragment — selection mapping was off by the number of trimmed leading spaces
• Layout (Bug 2): _sameLinkContext() guard prevents merging text nodes from different <a> ancestors during tokenization — fixed incorrect link tap targets
• Layout (Bug 3): _layoutFloat() now early-returns when _maxWidth.isInfinite — prevented crash in unconstrained layouts
• Layout (Bug 3): Float intrinsic size uses getMaxIntrinsicWidth/Height instead of child.layout() — eliminates double-layout
• Layout (Bug 4): Null/empty guard in _measureFragments for fragment.text — no longer crashes on atomic/ruby fragments
• Memory: _disposeLinkRecognizers() called in document setter — fixes recognizer leak when document is replaced
• Float: _layoutFloat() uses getMaxIntrinsicWidth/Height instead of direct child.layout() to avoid double-layout violations
• Nested Decorations (Issue 4): nodeToDecorated changed from Map<UDTNode, UDTNode> to Map<UDTNode, List<UDTNode>> — inner spans no longer overwrite outer spans in decoration maps
• Type Safety (BP5): decoratedRanges uses int? null sentinel instead of -1 — eliminates accidental -1 < 0 false matches

🔬 Tests

• +27 tests — ruby_layout_test.dart: RubyNode model, Fragment.ruby lifecycle, document tree traversal
• +30 tests — float_layout_test.dart: HyperFloat/HyperClear enums, node construction, LineInfo insets
• +44 tests — text_breaking_test.dart: canBreak, isWhitespace, ComputedStyle overflow, CJK/Kinsoku
• +52 tests — layout_algorithm_test.dart: characterOffset regression, rect computation, Bug 1–4 regressions, link context
• +32 tests — details_element_test.dart: <details>/<summary> model and widget open/close behavior
• +53 tests — rtl_bidi_test.dart: HyperTextDirection, hyperDirection inheritance, Arabic/Hebrew text, RTL widget integration

1.0.0 - 2026-03-01

First stable release. Core UDT model, RenderObject engine, plugin interfaces.