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nx_paint_walk_layout.nx

buildroot/runtime/nx_paint_walk_layout.nx

30524 B665 linesdepth 6pulls 12 transitivereach 85 importersview sourcekind librarytopic paint

docs dependencies structs consts functions

about

nx_paint_walk_layout.nx -- walk a laid-out LayoutBox tree and paint each box's `background-color` declaration into a Framebuffer. Phase 4 second primitive of NISHI_BROWSER_ROADMAP. THE integration primitive that proves the full bits-up pipeline composes end-to-end: CSS bytes -> nx_css_tokenize -> nx_css_parse -> nx_css_apply (cascade -> per-box decls) HTML tree -> nx_layout_box -> nx_layout_block (per-box x, y, w, h) Cascade -> nx_css_lookup_property -> nx_css_color_decode (per-box CssColor) Box+color -> nx_paint_solid_rect (pixels into Framebuffer) This primitive owns the walk + per-box lookup + color decode + paint orchestration. Each individual step is a sovereign primitive shipped prior; this is the connective tissue. What it does NOT handle yet (Phase 4b queued, explicit in header): - background-image / gradient backgrounds - foreground text rendering (waits for nx_paint_text + nx_font_bitmap glyph rasterizer) - border-color / border-style / border-width stroke - box-shadow / outline / drop shadow - opacity / alpha blending (currently solid overwrite) - z-index stacking contexts (currently document-order paint) - overflow:hidden clip-rect propagation to children - sub-pixel positioning Per cardinal feedback-honest-perf-verdict-no-aspirational-claims: gap list is EXACT. genealogy_id: w3c_css_backgrounds_module_level_3 + substrate_browser_phase_4_walk_paint lineage_id: nishi_browser_paint_walk_layout_v1

dependencies 8 imports · 8 importers

imports: nx_syscalls.nxnx_css_tokenize.nxnx_css_apply.nxnx_css_color_decode.nxnx_layout_box.nxnx_paint_solid_rect.nxnx_paint_text.nxnx_text_wrap.nx

imported by: nx_browser_demo_html.nxnx_browser_demo_html_nishi.nxnx_browser_demo_styled.nxnx_paint_walk_layout_test.nxnx_paint_walk_layout_text_test.nxnx_render_ascii.nxnx_render_html.nxnx_render_wiki_bmp.nx

structs

53	struct PaintPropTable
71	struct PaintCtx

consts

46	const NX_MAGIC_100000: i64 = 100000
47	const NX_MAGIC_65536: i64 = 65536
59	const NX_PAINT_PROP_TABLE_BYTES: i64 = 24
83	const NX_PAINT_CTX_BYTES: i64 = 72

functions

87	func _paint_put_byte(buf: *u8, i: i64, v: i64) -> i64 called by 1: nx_paint_prop_table_init
95	func nx_paint_prop_table_init(t: PaintPropTable, buf: u8) -> i64 called by 8: main main main main main main+2 calls 1: _paint_put_byte
123	func _paint_bytes_equal(a_src: *u8, a_off: i64, a_len: i64, called by 1: _paint_lookup_decl
139	func _paint_lookup_decl(ctx: *PaintCtx, called by 1: _paint_box_background calls 1: _paint_bytes_equal
160	func _bg_extract_color(src: u8, off: i64, len: i64, out: CssColor) -> i64 called by 1: _paint_box_background calls 3: nx_css_color_decode nx_css_color_named nx_css_color_rgb_func
181	func _paint_lookup_bg(ctx: PaintCtx, element_idx: i64) -> CssComputedDecl called by 1: _paint_box_background
202	func _paint_box_background(ctx: *PaintCtx, box_idx: i64) -> i64 called by 1: nx_paint_walk_layout calls 8: sys_mmap _paint_lookup_decl nx_css_color_decode nx_css_color_named nx_css_color_rgb_func _paint_lookup_bg+2
230	func _paint_color_decl(ctx: PaintCtx, element_idx: i64) -> CssComputedDecl called by 1: _paint_text_color
253	func _paint_text_color(ctx: PaintCtx, box_idx: i64, out: CssColor) -> i64 called by 1: _paint_box_text calls 4: _paint_color_decl nx_css_color_decode nx_css_color_named nx_css_color_rgb_func
278	func _paint_fontsize_decl_px(ctx: *PaintCtx, element_idx: i64) -> i64 called by 1: _paint_fontsize_px
310	func _paint_fontsize_px(ctx: *PaintCtx, box_idx: i64) -> i64 called by 1: _paint_box_text calls 1: _paint_fontsize_decl_px
326	func _paint_scale_for_px(px: i64) -> i64 called by 1: _paint_box_text
334	func _paint_display_none(ctx: *PaintCtx, box_idx: i64) -> i64 called by 1: nx_paint_walk_layout
362	func _paint_prop_ident_is(ctx: PaintCtx, box_idx: i64, prop: u8, prop_len: i64, val: *u8, val_len: i64) -> i64 called by 1: _paint_inherited_style
390	func _paint_inherited_style(ctx: PaintCtx, box_idx: i64, prop: u8, prop_len: i64, val: *u8, val_len: i64) -> i64 called by 1: _paint_box_text calls 1: _paint_prop_ident_is
405	func _paint_box_text(ctx: *PaintCtx, box_idx: i64) -> i64 called by 1: nx_paint_walk_layout calls 7: sys_mmap _paint_text_color _paint_scale_for_px _paint_fontsize_px _paint_inherited_style tw_next_break+1
448	func nx_paint_ctx_init(ctx: *PaintCtx, called by 8: main main main main main main+2
469	func nx_paint_ctx_set_boxel(ctx: PaintCtx, boxel: CssElement) -> i64 called by 1: _rh_to_fb
479	func nx_paint_ctx_set_text(ctx: *PaintCtx, called by 7: main main main main main _rh_to_fb+1
489	func _paint_li_marker(ctx: *PaintCtx, box_idx: i64) -> i64 called by 1: nx_paint_walk_layout calls 3: sys_mmap nx_paint_solid_rect nx_paint_text
546	func _paint_border_lookup(ctx: PaintCtx, box_idx: i64) -> CssComputedDecl called by 1: _paint_box_border
563	func _hex_is(c: i64) -> i64 called by 1: _paint_box_border
573	func _paint_box_border(ctx: *PaintCtx, box_idx: i64) -> i64 called by 1: nx_paint_walk_layout calls 6: _paint_border_lookup sys_mmap _hex_is nx_css_color_decode nx_css_color_named nx_paint_solid_rect
635	func nx_paint_walk_layout(ctx: *PaintCtx, root_idx: i64) -> i64 called by 9: main main main nx_paint_walk_layout main main+3 calls 6: _paint_display_none _paint_box_background _paint_box_border _paint_box_text _paint_li_marker nx_paint_walk_layout