Edit a PDF: select all, copy, cut and paste page objects within and between documents (#6639)

Refs #5989. Ctrl/Cmd+A selects every object on the page; copied objects paste as page content that draws the same, within a document or into another, with organize's bounded deep copy across documents. Headless: object_copy, object_paste, object_move all.

parity/acrobat-features.toml

@@ -1561,9 +1561,9 @@ tier = "P1"
 milestone = "M3"
 status = "shipped"
 commands = []
-tools = []
-evidence = ["crates/ui-egui/tests/it/viewer.rs::view_history_select_all_and_find_options", "crates/ui-egui/src/canvas/tests.rs::select_all_copies_the_whole_document_while_scrolling_continuously", "crates/ui-egui/src/canvas/tests.rs::select_all_of_the_document_only_while_scrolling_through_several_pages"]
-notes = "⌘A: the current page one page at a time; the whole document scrolling continuously (#2639), copied whole"
+tools = ["object_copy", "object_move"]
+evidence = ["crates/ui-egui/tests/it/viewer.rs::view_history_select_all_and_find_options", "crates/ui-egui/src/canvas/tests.rs::select_all_copies_the_whole_document_while_scrolling_continuously", "crates/ui-egui/src/canvas/tests.rs::select_all_of_the_document_only_while_scrolling_through_several_pages", "crates/ui-egui/tests/it/object_selection.rs::command_a_selects_every_object_on_the_page_to_move_and_delete_together", "crates/ui-egui/tests/it/object_selection.rs::command_a_in_an_open_paragraph_selects_its_text_not_the_objects", "crates/automation/tests/it/automation.rs::objects_copy_cut_and_paste_through_tools_within_and_across_documents"]
+notes = "⌘A: the current page one page at a time; the whole document scrolling continuously (#2639), copied whole. In Edit text & images (Acrobat's Edit PDF) ⌘A selects every object on the current page together instead (paragraphs, artwork, added content), to move with the arrows or a drag, delete or copy as one step; inside a paragraph open for typing it selects that text. Headless: `all: true` in object_move and object_copy. Not observed against Acrobat: whether its ⌘A there also reaches paths and inline images (not selectable here)."
 
 [[feature]]
 id = "view.copy-with-layout"
@@ -2117,9 +2117,9 @@ area = "C"
 tier = "P1"
 milestone = "M7"
 status = "partial"
-tools = ["content_copy"]
-evidence = ["crates/automation/tests/it/automation.rs::copying_added_content_through_tools", "crates/engine/src/tests.rs::pasted_added_content_keeps_its_style_and_picture", "crates/engine/src/tests.rs::an_added_jpeg_2000_image_is_copied_as_its_file", "crates/edit/src/tests.rs::a_paste_lands_where_the_copy_was_offset_per_paste_and_stays_on_the_page", "crates/edit/src/tests.rs::a_paste_steps_past_copies_of_itself_only"]
-notes = "Issue #2636, engine and automation part. Edit::PasteContent pastes an added text box or image copied in the same document or another, as one undo step, and `content_copy` drives it headlessly. A copy keeps a text box's text, font, size, colour, alignment and box, and an image's picture, box, turns, flips and crop. It lands where the item was, stepped 18 pt down and to the right past each copy already on the page, or at a given point, and stays on the page. Within a document a pasted image draws the same image object; into another document its picture goes as its JPEG or JPEG 2000 file, or else a PNG, so a colour profile is dropped and CMYK colours in a PNG are turned to RGB, and later pastes there reuse the first one's picture. The copy permission is honoured. Missing: the desktop app's ⌘X / ⌘C / ⌘V, Edit ▸ Cut and Paste and the right-click menu (follow-up PRs), the original document's paragraphs and images (open PRs #1625 and #2251), several items at once, and a check of Acrobat's own clipboard format (not observed)."
+tools = ["content_copy", "object_copy", "object_paste"]
+evidence = ["crates/ui-egui/tests/it/object_selection.rs::objects_copy_cut_and_paste_with_the_keys_on_the_page_and_into_another_document", "crates/ui-egui/tests/it/object_selection.rs::a_newer_copy_elsewhere_wins_over_the_copied_objects", "crates/automation/tests/it/automation.rs::objects_copy_cut_and_paste_through_tools_within_and_across_documents", "crates/engine/src/object_clip_tests.rs::objects_copied_from_one_document_paste_into_another_and_draw_the_same", "crates/engine/src/object_clip_tests.rs::pasting_into_another_document_follows_cycles_and_refuses_past_its_limit", "crates/edit/src/objects/clip_tests.rs::pasted_objects_draw_the_same_on_another_page_under_renamed_resources", "crates/edit/src/objects/clip_tests.rs::a_paste_onto_its_own_page_moves_by_the_offset_and_draws_the_same", "crates/automation/tests/it/automation.rs::copying_added_content_through_tools", "crates/engine/src/tests.rs::pasted_added_content_keeps_its_style_and_picture", "crates/engine/src/tests.rs::an_added_jpeg_2000_image_is_copied_as_its_file", "crates/edit/src/tests.rs::a_paste_lands_where_the_copy_was_offset_per_paste_and_stays_on_the_page", "crates/edit/src/tests.rs::a_paste_steps_past_copies_of_itself_only"]
+notes = "Existing page objects (#5989): in Edit text & images, ⌘C / ⌘X / ⌘V and Edit ▸ Copy, Cut and Paste act on the objects selected together (⌘A, a marquee, modifier-clicks, a paragraph's frame): paragraphs, Image and Form artwork and added content. Edit::PasteObjects pastes them onto the current page of any open document as one undo step, selected: onto their own page 18 pt down and right, elsewhere where they were, each further paste a step more, centred when off the page. The paste draws the same pixels (raster-compared in tests): their content operators with the graphics state they had, and every resource they use (fonts, XObjects, ExtGStates, colour spaces, patterns, shadings) merged into the page's under names that don't clash, as Ungroup merges them; into another document the objects they refer to are copied once each, through cycles, sharing what is there, refused past 20,000 objects or 256 MB. Cut deletes as one step. The system clipboard gets their text (or the first picture) for other applications, and a newer copy wins ⌘V. Headless: object_copy (all, cut) and object_paste. Limits: pasted content is untagged and in no layer, an added text box pastes as page text, text clipping what follows and artwork that inherits resources it names are refused, no right-click Cut/Copy/Paste for these objects yet, and Acrobat's own clipboard format was not observed. Issue #2636, engine and automation part. Edit::PasteContent pastes an added text box or image copied in the same document or another, as one undo step, and `content_copy` drives it headlessly. A copy keeps a text box's text, font, size, colour, alignment and box, and an image's picture, box, turns, flips and crop. It lands where the item was, stepped 18 pt down and to the right past each copy already on the page, or at a given point, and stays on the page. Within a document a pasted image draws the same image object; into another document its picture goes as its JPEG or JPEG 2000 file, or else a PNG, so a colour profile is dropped and CMYK colours in a PNG are turned to RGB, and later pastes there reuse the first one's picture. The copy permission is honoured. Missing: the desktop app's ⌘X / ⌘C / ⌘V, Edit ▸ Cut and Paste and the right-click menu (follow-up PRs), the original document's paragraphs and images (open PRs #1625 and #2251), several items at once, and a check of Acrobat's own clipboard format (not observed)."
 
 [[feature]]
 id = "edit.image-replace"