Merge grouped Thai text editing (#6249)

# Conflicts:
#	parity/acrobat-features.toml
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bflatastic committed 2026-11-08 22:31:13 +07:00
commit 4444355446
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@@ -1894,9 +1894,9 @@ tier = "P0"
milestone = "M7"
status = "partial"
commands = ["edit.edit_text"]
tools = ["text_lines", "text_paragraphs", "text_edit", "text_edit_layout", "text_font_files", "text_font_import", "text_fonts"]
evidence = ["crates/edit/src/tests.rs::paragraphs_are_found_and_rewrapped", "crates/edit/src/tests.rs::text_lines_are_found_and_replaced_in_place", "crates/ui-egui/tests/it/editing.rs::editing_existing_text_in_place", "crates/automation/tests/it/automation.rs::editing_existing_text_through_tools", "crates/edit/src/tests.rs::a_line_whose_operator_starts_the_next_stream_can_be_edited", "crates/automation/tests/it/automation.rs::a_line_split_across_content_streams_is_listed_and_edited", "crates/ui-egui/tests/it/editing.rs::selected_text_formatting_keeps_the_rest_of_the_paragraph_and_reopens", "crates/edit/src/tests.rs::marked_paragraph_boundaries_and_cross_stream_transforms_survive_rewrite", "crates/automation/tests/it/automation.rs::explicit_font_and_disjoint_ranges_save_reopen_through_tools", "crates/edit/src/tests.rs::disjoint_style_ranges_preserve_unselected_runs_and_validate_utf8_atomically", "crates/engine/tests/it/document_fonts.rs::opentype_cff_document_font_preserves_program_codes_and_rendering_after_reopen", "crates/ui-egui/tests/it/editing.rs::cropped_images_do_not_intercept_text_and_stay_inside_each_page", "crates/automation/tests/it/automation.rs::clipped_image_bounds_and_text_edit_save_reopen_through_tools", "crates/edit/src/tests.rs::mixed_styles_and_matrix_sizes_form_visual_regions_without_merging_columns", "crates/edit/src/tests.rs::rich_region_edits_preserve_styles_positions_and_delete_all_runs_after_reopen", "crates/ui-egui/tests/it/editing.rs::one_editor_contains_mixed_styles_and_visual_rows", "crates/ui-egui/tests/it/editing.rs::inline_editor_preserves_source_font_and_previews_live_bounds", "crates/fonts/src/pdf/tests.rs::mac_subset_cmap_uses_pdf_unicode_without_changing_source_program", "crates/automation/tests/it/automation.rs::mixed_visual_region_edit_preview_save_reopen_and_undo_through_tools", "crates/ui-egui/tests/it/ui.rs::the_edit_tab_turns_on_edit_text_and_images", "crates/ui-egui/tests/it/editing.rs::the_caret_on_a_small_row_is_as_tall_as_that_row", "crates/edit/src/tests.rs::uzbek_and_kazakh_cyrillic_use_the_bundled_latin_face", "crates/automation/tests/it/automation.rs::editing_uzbek_and_kazakh_cyrillic_through_tools", "crates/edit/src/tests.rs::styled_paragraph_batches_cyrillic_without_changing_source_fonts", "crates/edit/src/tests.rs::styled_paragraph_over_240_fallback_glyphs_splits_and_refuses_atomically", "crates/edit/src/tests.rs::styled_fallback_batches_keep_face_choices_and_range_styles", "crates/edit/src/tests.rs::styled_fallback_shards_keep_text_advances_and_alignment", "crates/edit/src/tests.rs::styled_fallback_budget_is_enforced_before_objects_are_written", "crates/edit/src/tests.rs::styled_fallback_same_base_font_and_character_keep_both_weights", "crates/automation/tests/it/automation.rs::styled_cyrillic_fallback_is_batched_through_tools_and_reopen", "crates/ui-egui/tests/it/editing.rs::escape_in_an_open_paragraph_selects_its_box_for_delete", "crates/edit/src/tests.rs::ungrouping_form_artwork_makes_its_text_editable", "crates/automation/tests/it/automation.rs::ungrouping_a_table_drawn_in_a_form_makes_its_text_editable", "crates/ui-egui/tests/it/editing.rs::ungroup_in_the_artwork_menu_makes_a_forms_text_editable", "crates/edit/src/tests.rs::ungroup_carries_the_placement_into_the_patterns_it_selects", "crates/automation/tests/it/automation.rs::ungrouping_keeps_patterns_where_the_forms_placement_put_them", "crates/edit/src/tests.rs::ungroup_refuses_a_form_with_its_own_default_colour_space", "crates/edit/src/tests.rs::ungroup_renames_the_name_operand_the_renderer_reads"]
notes = "The Edit tab turns Edit text & images on at once, as in Acrobat (leaving the tab puts the tool down and applies an edit in progress); Esc in an open paragraph leaves its text and selects its box, so Delete removes it (the unapplied draft is discarded); click a paragraph box and retype it in place (font reused or Helvetica substituted, colour and spacing kept, rewrapped); a page's /Contents pieces are parsed joined, so a line whose operands and operator sit in different pieces is listed and edited (lines and paragraphs still don't join across pieces; Edit image still parses each piece alone); drag a box to move it or its right-edge handle to rewrap it (edit.text-move-resize); per-character formatting changes are next Since #1116: mixed-style visual regions retain source rows, subset encodings, colour and baseline anchors in one textless-background editor. Explicit paragraph/heading scopes constrain grouping; compatible graphics planes permit cross-stream regions. Full matching document fonts complete absent subset glyphs; installed/file selection, TrueType/OpenType-CFF embedding and disjoint UTF-8 range styles have save/reopen coverage. Single-face OpenType shaping/bidi retains logical text through ToUnicode/ActualText. Replacement text the paragraph's font can't show takes the craft-fonts Japanese faces when they draw all of it (Uzbek қ, Kazakh ә are in none of them), else the bundled Inter face, so those letters write in every build (#2593). Legacy non-SFNT preview, mixed-font/style contextual runs, full structure-tree preservation and author intent in untagged PDFs remain limited; Styled-path outline fallback batches by actual face with 240 glyphs per font and preserves source styles; adjacent equal-font/style characters form runs. At most 15360 distinct fallback glyphs per styled paragraph; missing glyphs are refused before fallback objects are written. Glyph coverage, mixed contextual shaping, single-style fallback and stale-font cleanup are unchanged; see docs/editing-existing-text.md. Text drawn inside a Form XObject (HTML-to-PDF output, stamped or imposed pages) is grouped artwork until Ungroup (artwork right-click menu; image_edit action ungroup) draws that placement in place with its resources merged; knockout groups and transparency groups that blend inside, are drawn translucent or blend in a colour space other than the page's are refused, as are forms whose /DefaultGray, /DefaultRGB or /DefaultCMYK the page doesn't share (ISO 32000-2 §8.6.5.6), each resource name is read from the operand the renderer uses (a surplus operand before it is ignored; an operator whose operands can't be read is refused), and a pattern the form fills with is drawn from a copy whose /Matrix carries the placement (ISO 32000-2 §8.7.2), so ungrouping never changes the pixels."
tools = ["text_prepare", "text_lines", "text_paragraphs", "text_edit", "text_edit_layout", "text_font_files", "text_font_import", "text_fonts"]
evidence = ["crates/edit/src/tests.rs::editing_legacy_thai_keeps_the_embedded_face_weight_size_spacing_and_paint_after_reopen", "crates/edit/src/tests.rs::editing_legacy_thai_shapes_a_run_across_subsets_of_the_same_face", "crates/edit/src/tests.rs::grouped_text_nested_past_the_level_limit_is_reported", "crates/edit/src/tests.rs::grouped_image_artwork_is_not_prepared", "crates/edit/src/tests.rs::grouped_text_in_an_rgb_group_needs_a_page_that_blends_in_rgb", "crates/fonts/src/pdf/thai.rs::recovered_thai_map_checks_every_kept_glyph_against_the_font_program", "crates/automation/tests/it/automation.rs::text_prepare_refuses_pages_without_grouped_text", "crates/fonts/src/pdf/tests.rs::composite_subset_without_cmap_uses_pdf_glyph_ids_in_editor_and_shaper_without_replacing_the_program", "crates/automation/tests/it/automation.rs::grouped_existing_thai_body_edits_saves_reopens_and_undo_restores_original_glyphs", "crates/edit/src/tests.rs::grouped_text_preparation_keeps_unsafe_compositing_paths_and_malformed_forms_intact", "crates/automation/tests/it/automation.rs::explicit_bundled_thai_font_choice_layout_edit_undo_and_reopen", "crates/edit/src/tests.rs::existing_thai_subset_uses_shaped_matching_face_without_embedding_variable_font", "crates/edit/src/tests.rs::paragraphs_are_found_and_rewrapped", "crates/edit/src/tests.rs::text_lines_are_found_and_replaced_in_place", "crates/ui-egui/tests/it/editing.rs::editing_existing_text_in_place", "crates/automation/tests/it/automation.rs::editing_existing_text_through_tools", "crates/edit/src/tests.rs::a_line_whose_operator_starts_the_next_stream_can_be_edited", "crates/automation/tests/it/automation.rs::a_line_split_across_content_streams_is_listed_and_edited", "crates/ui-egui/tests/it/editing.rs::selected_text_formatting_keeps_the_rest_of_the_paragraph_and_reopens", "crates/edit/src/tests.rs::marked_paragraph_boundaries_and_cross_stream_transforms_survive_rewrite", "crates/automation/tests/it/automation.rs::explicit_font_and_disjoint_ranges_save_reopen_through_tools", "crates/edit/src/tests.rs::disjoint_style_ranges_preserve_unselected_runs_and_validate_utf8_atomically", "crates/engine/tests/it/document_fonts.rs::opentype_cff_document_font_preserves_program_codes_and_rendering_after_reopen", "crates/ui-egui/tests/it/editing.rs::cropped_images_do_not_intercept_text_and_stay_inside_each_page", "crates/automation/tests/it/automation.rs::clipped_image_bounds_and_text_edit_save_reopen_through_tools", "crates/edit/src/tests.rs::mixed_styles_and_matrix_sizes_form_visual_regions_without_merging_columns", "crates/edit/src/tests.rs::rich_region_edits_preserve_styles_positions_and_delete_all_runs_after_reopen", "crates/ui-egui/tests/it/editing.rs::one_editor_contains_mixed_styles_and_visual_rows", "crates/ui-egui/tests/it/editing.rs::inline_editor_preserves_source_font_and_previews_live_bounds", "crates/fonts/src/pdf/tests.rs::mac_subset_cmap_uses_pdf_unicode_without_changing_source_program", "crates/automation/tests/it/automation.rs::mixed_visual_region_edit_preview_save_reopen_and_undo_through_tools", "crates/ui-egui/tests/it/ui.rs::the_edit_tab_turns_on_edit_text_and_images", "crates/ui-egui/tests/it/editing.rs::the_caret_on_a_small_row_is_as_tall_as_that_row", "crates/edit/src/tests.rs::uzbek_and_kazakh_cyrillic_use_the_bundled_latin_face", "crates/automation/tests/it/automation.rs::editing_uzbek_and_kazakh_cyrillic_through_tools", "crates/edit/src/tests.rs::styled_paragraph_batches_cyrillic_without_changing_source_fonts", "crates/edit/src/tests.rs::styled_paragraph_over_240_fallback_glyphs_splits_and_refuses_atomically", "crates/edit/src/tests.rs::styled_fallback_batches_keep_face_choices_and_range_styles", "crates/edit/src/tests.rs::styled_fallback_shards_keep_text_advances_and_alignment", "crates/edit/src/tests.rs::styled_fallback_budget_is_enforced_before_objects_are_written", "crates/edit/src/tests.rs::styled_fallback_same_base_font_and_character_keep_both_weights", "crates/automation/tests/it/automation.rs::styled_cyrillic_fallback_is_batched_through_tools_and_reopen", "crates/ui-egui/tests/it/editing.rs::escape_in_an_open_paragraph_selects_its_box_for_delete", "crates/edit/src/tests.rs::ungrouping_form_artwork_makes_its_text_editable", "crates/automation/tests/it/automation.rs::ungrouping_a_table_drawn_in_a_form_makes_its_text_editable", "crates/ui-egui/tests/it/editing.rs::ungroup_in_the_artwork_menu_makes_a_forms_text_editable", "crates/edit/src/tests.rs::ungroup_carries_the_placement_into_the_patterns_it_selects", "crates/automation/tests/it/automation.rs::ungrouping_keeps_patterns_where_the_forms_placement_put_them", "crates/edit/src/tests.rs::ungroup_refuses_a_form_with_its_own_default_colour_space", "crates/edit/src/tests.rs::ungroup_renames_the_name_operand_the_renderer_reads"]
notes = "Supported grouped Forms are prepared on entering Edit text, or via text_prepare, so their existing source glyphs can be edited directly. Unsafe groups (including RGB-blended groups on a page that names no blending space) remain intact and are reported by text_prepare (the app records them in the repair log only when it prepares other groups on the page, and says nothing when it can prepare none), as is text grouped more than eight levels deep; image-only forms are left grouped. Narrow legacy THSarabunPSK character-map recovery, checked glyph by glyph against the subset's own advances, is recorded. Legacy Thai source editing reuses original font programs, positional glyphs and same-face subsets (a Thai run split across subsets is shaped cluster by cluster; what no subset can show in its codes is shaped whole by a complete program of the face, such as one from Load font), preserving Regular/Bold, point size, spacing and paint. A different Thai family requires explicit selection; the Noto replacement is Regular only; mixed contextual style runs remain limited. The Edit tab turns Edit text & images on at once, as in Acrobat (leaving the tab puts the tool down and applies an edit in progress); Esc in an open paragraph leaves its text and selects its box, so Delete removes it (the unapplied draft is discarded); click a paragraph box and retype it in place (font reused or Helvetica substituted, colour and spacing kept, rewrapped); a page's /Contents pieces are parsed joined, so a line whose operands and operator sit in different pieces is listed and edited (lines and paragraphs still don't join across pieces; Edit image still parses each piece alone); drag a box to move it or its right-edge handle to rewrap it (edit.text-move-resize); per-character formatting changes are next Since #1116: mixed-style visual regions retain source rows, subset encodings, colour and baseline anchors in one textless-background editor. Explicit paragraph/heading scopes constrain grouping; compatible graphics planes permit cross-stream regions. Full matching document fonts complete absent subset glyphs; installed/file selection, TrueType/OpenType-CFF embedding and disjoint UTF-8 range styles have save/reopen coverage. Single-face OpenType shaping/bidi retains logical text through ToUnicode/ActualText. Replacement text the paragraph's font can't show takes the craft-fonts Japanese faces when they draw all of it (Uzbek қ, Kazakh ә are in none of them), else the bundled Inter face, so those letters write in every build (#2593). Legacy non-SFNT preview, mixed-font/style contextual runs, full structure-tree preservation and author intent in untagged PDFs remain limited; Styled-path outline fallback batches by actual face with 240 glyphs per font and preserves source styles; adjacent equal-font/style characters form runs. At most 15360 distinct fallback glyphs per styled paragraph; missing glyphs are refused before fallback objects are written. Glyph coverage, mixed contextual shaping, single-style fallback and stale-font cleanup are unchanged; see docs/editing-existing-text.md. Text drawn inside a Form XObject (HTML-to-PDF output, stamped or imposed pages) is grouped artwork until Ungroup (artwork right-click menu; image_edit action ungroup) draws that placement in place with its resources merged; knockout groups and transparency groups that blend inside, are drawn translucent or blend in a colour space other than the page's are refused, as are forms whose /DefaultGray, /DefaultRGB or /DefaultCMYK the page doesn't share (ISO 32000-2 §8.6.5.6), each resource name is read from the operand the renderer uses (a surplus operand before it is ignored; an operator whose operands can't be read is refused), and a pattern the form fills with is drawn from a copy whose /Matrix carries the placement (ISO 32000-2 §8.7.2), so ungrouping never changes the pixels."
[[feature]]
id = "edit.text-reflow"