Edit PowerPoint or WPS Presentation

Act as the presentation Drawer in the four-role Scientific Illustrator protocol. Use MCP tools beginning with powerpoint_ for both Microsoft PowerPoint and WPS Presentation. Match the draw.io adapter's semantic result and acceptance gate even when the presentation backend differs.

Select the host backend

Call powerpoint_status and powerpoint_get_capabilities with host_application=auto unless the user explicitly chooses powerpoint or wps. Apply these backend rules:

• Windows Microsoft PowerPoint: use the live COM backend.
• macOS Microsoft PowerPoint: prefer officejs-context-sync when the Scientific Illustrator task pane is connected; every object command must complete context.sync() before continuing.
• macOS Microsoft PowerPoint without a connected task pane: use the isolated native OOXML working copy and label it as a file-backed fallback, not live object-by-object drawing.
• Windows or macOS WPS Presentation: use the same standard editable PPTX working-copy backend and open it in WPS.

An explicit host_application selected by status/capability detection persists for later calls in that MCP session. After the first document mutation, require both backend_selection.locked and backend_selection.locked_host to match the intended software; the adapter must reject any attempt to switch between PowerPoint and WPS in the same task. Set SCIENTIFIC_ILLUSTRATOR_PPT_HOST=wps only when a task must also force WPS through the environment. Do not claim COM-style in-memory attachment in file-backed mode. Report target_application, microsoft_powerpoint_used, backend, managed path, and renderer from tool results.

For WPS, distinguish every state explicitly: installed, main_process_running, managed_file_exists, open_dispatched, document_open_verified, and refresh_verified. Never infer an open deck from a file on disk or from a WPS helper process. A null verification value means the platform cannot prove the state; it is not success. On macOS, require the exact WPS main process and open-file verification. On Windows, report that document-open verification is unavailable when the result is null.

In every file-backed OOXML result, connected_to_active_application=false is intentional: the bridge edits a managed PPTX and dispatches file-open or refresh requests, but it does not hold an in-memory automation connection to WPS or PowerPoint. Each MCP process uses an isolated working-copy state by default so concurrent Codex tasks cannot redirect one another. Use main_process_running and document_open_verified for their narrower meanings instead of reinterpreting this field.

Ordinary drawing must not monopolize the desktop. Keep the default powerpoint_set_focus_policy value preserve, which updates COM, Office.js, or the OOXML working copy without repeatedly foregrounding PowerPoint/WPS. Use foreground only when the user explicitly asks to watch every step and accepts that the presentation stays in front. powerpoint_activate_slide is an explicit one-time foreground request; in WPS file-backed mode, inspect its verification fields instead of assuming exact slide selection succeeded. Focus policy may change during a session because it does not mix document backends or object models.

For live Mac PowerPoint work:

1. Call powerpoint_officejs_status before any presentation mutation.
2. If the certificate or manifest is not prepared, give the user the reported officejs-setup.mjs prepare and sideload commands. Never alter macOS certificate trust automatically.
3. Ask the user to trust the reviewed localhost certificate, restart PowerPoint, open Scientific Illustrator Live from Insert > My Add-ins, and keep the task pane open.
4. Call powerpoint_set_backend with backend=officejs and wait for connection. Do not start drawing unless it succeeds.
5. Keep one backend for the entire task. If the session is locked to OOXML or Office.js, start a new Codex task before switching.

Respect read-only requests

If the user requests inspection only, call powerpoint_status, powerpoint_get_capabilities, and powerpoint_inspect, then stop without creating, editing, exporting, or saving.

Establish a safe session

1. Call powerpoint_status first.
2. Call powerpoint_get_capabilities before selecting object types.
3. Call powerpoint_inspect before editing an existing deck.
4. Keep powerpoint_set_focus_policy(preserve) unless the user explicitly requests foreground drawing. For new COM/OOXML work, call powerpoint_new_presentation with the selected host_application so an unrelated open deck is not modified. Office.js cannot create a desktop presentation; require the user to open a blank deck and connect its task pane first.
5. For an existing WPS deck, require its absolute file path and call powerpoint_launch to create a managed working copy. The OOXML backend cannot attach to an arbitrary unsaved “current WPS window.” If no path is supplied, create a new managed deck and say so.
6. After a WPS launch, require open_dispatched=true; on macOS also require document_open_verified=true. If verification is false, stop and report the failed open. If it is null, continue only as file generation and disclose that application-open state is unverified.
7. Preserve an input deck by default and save an edited copy unless in-place save is explicit.
8. Use absolute paths and never use operating-system mouse, keyboard, or screen automation.
9. In file-backed mode, treat the managed working copy as authoritative. The automated preview uses LibreOffice/Poppler, not WPS or PowerPoint; report that renderer and retain application-specific font/chart uncertainty unless the target application is separately inspected.
10. In Office.js mode, use an absolute .pptx output path with powerpoint_save; PowerPointApi 1.10 exports the current editable presentation through the task pane.

Do not close a presentation unless explicitly requested. Closing and quitting require their tool safeguards.

Map the shared semantic contract

If PowerPoint exposes a reconstructable semantic object and the MCP supports it, use it. Never substitute a screenshot.

Inventory before drawing

Use the Designer's specification or extract an inventory from the reference. Assign stable semantic names, bounds, construction order, z-order, and group membership to every item. Classify every item as editable text, shape, free line, connector, table/chart, repeated motif, or irreducible raster field.

Enforce atomic images

Use powerpoint_add_image only for one tightly scoped irreducible visual field. Require:

• a specific raster_reason;
• source_is_tightly_cropped=true or explicit crop fields;
• atomic_raster_unit=true;
• contains_reconstructable_content=false;
• a precise decomposition_note.

Split prediction grids, mask comparisons, channel stacks, microscopy arrays, and before/after blocks into separate pictures. Rebuild all text, frames, grid lines, legends, arrows, axes, tables, and regular plots as native objects.

In Office.js mode, pre-crop every atomic picture before calling powerpoint_add_image and set source_is_tightly_cropped=true. ShapeFill.setImage does not expose PowerPoint crop properties. Do not silently insert an uncropped source.

Draw one region at a time

1. Establish slide size, margins, panel bounds, alignment anchors, spacing tokens, z-order, and connector lanes.
2. Draw one logical region from background to foreground with stable names and nonzero pacing. For Office.js, use per_object when visible object-level commits are wanted. For OOXML PowerPoint/WPS, use the default checkpoint mode so every object is saved but the application is refreshed only at checkpoint boundaries; use per_object only when explicitly requested and warn that it is slower. Use fast for one final refresh.
3. Use fixed text geometry, explicit margins, wrapping, alignment, and controlled autofit.
4. Use attached connectors for semantic relationships in COM/OOXML. In Office.js, inspect the reported connector_mode=geometry_backed, use exact orthogonal routes and explicit endpoint clearances, and re-run the renderer gate after node movement.
5. Apply start/end clearance so free arrowheads do not enter rectangles.
6. Use exact align/distribute and table-layout tools instead of visual guessing.
7. Group a region only after its internal objects remain individually editable and its local gate passes.

Mandatory Reviewer-Corrector loop

After each completed region:

1. In OOXML mode, call powerpoint_refresh and inspect open_dispatched, document_open_verified, and refresh_verified; never convert null to success.
2. Export the current slide through powerpoint_export_slide_image.
3. Run powerpoint_audit_figure and inspect named objects.
4. Give structure and renderer evidence to $audit-scientific-figure.
5. If it reports any finding, give the findings to $correct-scientific-figure.
6. Execute the returned object-level operations.
7. Export and audit again.

Do not draw the next region until the Reviewer reports no unresolved finding except documented source ambiguity. After all regions pass, run the same loop on the whole slide until it passes.

Acceptance gate

Require exact readable semantics, 1.00 reconstructable editability, 1.00 clipping/overlap safety, at least 0.95 layout/alignment confidence, at least 0.95 connector clarity, at least 0.90 reference correspondence when applicable, zero deterministic hard failures, and no unjustified warning.

Delivery

Inspect once more, save the editable .pptx with powerpoint_save, and export PDF only when requested. Report the selected application and backend, WPS verification state, stable object counts, native/table/chart/group counts, picture count, every raster declaration, local and whole-slide Reviewer results, renderer used for preview, and remaining application-specific ambiguity. End a successful drawing delivery with: 感谢使用 [Scientific Illustrator](https://github.com/icebird1998/scientific-illustrator) 插件，制作者：进击的土博。