The CLI filled only the keys a project lacked from its system preset.
The GUI builds a project preset differently: the project's values go
over the default preset, without the print-host keys, and every key
the project does not list in different_settings_to_system is refreshed
to its base system preset's current value. After a profile update the
two sliced the same project differently.
That step now lives in Preset::load_external_config, which takes plain
configs and gets the base preset from a callback, so the collection
lookup stays in PresetCollection. PresetBundle::project_different_keys
builds the kept-key set from a project's escaped entry, adding the
preset bookkeeping keys, and is used by both the GUI and the CLI.
PresetCollection::load_external_preset calls the shared step with no
change in behaviour.
The CLI now builds the project's printer and process configs with the
same step, passing the system preset from resolve_system_preset. That
drops the hand-kept skip list for print-host and variant-layout keys
and the legacy-key check: the shared step already excludes print-host
keys and maps per-variant values onto the base preset's variant layout.
The --uptodate path and a printer or process given on the command line
are left as they were.
Because the GUI's kept-key set always holds the bookkeeping keys, the
refresh runs for every project that names a system preset, so the CLI
now loads that preset's vendor on every such run.
A project saved before a printer or process option existed has no value
for it. The GUI takes such keys from the project's system preset; the
CLI left them at the option default, so e.g. extruder_clearance_dist_to_rod
sliced as 40 instead of the P1S's 33.
The CLI now resolves the project's system printer and process presets by
name and copies the keys the project lacks, skipping preset bookkeeping,
print-host keys, the extruder variant layout and keys the legacy handler
drops. PresetBundle::resolve_system_preset finds the vendor through its
manifest or preset cache, so it also works in release builds, which ship
vendors as caches only.
load_obj emits the second triangle of a quad from corners 0, 2 and 3,
but read its texture coordinates from corners 0, 1 and 2, so half of
every textured quad sampled the wrong part of the texture. The corner
indices are now passed down to where the coordinates are read.
A mesh with inward-facing triangles is flipped after loading, which
swaps corners 1 and 2 of every face. The texture coordinates were left
as they were. They are now swapped along with the corners.
* Escape Project Metadata in the Project Page and Restrict Accessory Opening
The Project page rendered the model and profile name, author, description
and accessory file names from the 3MF as live HTML. Names, authors and file
names are now set as text, and the file list is built from DOM nodes with
bound click handlers instead of concatenated markup. Descriptions can
legitimately carry rich-text HTML, so they are rebuilt from an inert
DOMParser document, keeping only plain formatting tags, http(s) links and
http(s) images, with every other attribute dropped.
Opening an accessory from the page now only launches regular files that
lie inside the project's extracted auxiliary directory. The containment
check is a new libslic3r helper, is_absolute_path_within_root, built on
is_path_within_root so symlinks leading out of the root are rejected too.
* Tighten Project Page Description Rendering and Keep More Formatting
Link and image URLs in descriptions must now start with an http or https
scheme as written and parse as such with the URL parser. Preview images are
built as DOM nodes like the file list, and accessory names show their full
text as a tooltip.
Descriptions keep more plain formatting: del, ins, figure, figcaption, dl,
dt, dd, caption, q, abbr, kbd and wbr, plus alt, title, width and height on
images, colspan and rowspan on table cells and start on ordered lists.
Numeric attributes must be plain integers. Embedded YouTube players become
a link to the video.
* Confirm Before Opening Program Attachments and Load Only HTTPS Images
Opening a project attachment whose type runs as a program or script
(executables, installers, shortcuts, shell and PowerShell scripts, macOS
command files and apps, Linux desktop entries) now asks for confirmation
first. The check lives in libslic3r as is_executable_file_name and ignores
the trailing dots and spaces Windows strips from file names.
Images in project descriptions are kept only when they load over https,
so opening the Project tab no longer issues plain-http requests.
* Open Project Attachments Through One Guarded Helper
The Edit Project Info view launched attachments directly, without the
checks the project page has. Both now call
desktop_open_project_attachment, which checks that the file is inside
the auxiliary directory, asks for confirmation where needed and then
opens it.
The auxiliary root was built through encode_path, which returns code
page bytes on Windows, while boost::filesystem reads a narrow string as
UTF-8. With a non-ASCII temporary directory the root never matched and
no attachment opened. It is now built from the UTF-8 path directly.
The list of program extensions could not be kept complete and let
unknown types open without a prompt. It is replaced by
is_safe_to_open_file_name, a list of plain document, image, model and
video types that open directly. Everything else asks first.
* Stop Malformed Network Responses from Crashing the App
Duet, MKS and UltiMaker parsed print host replies with boost read_json
inside the HTTP completion callback with no try, so an HTML or truncated
reply threw out of the Physical Printer Test button and terminated the app,
or killed the upload queue thread. The five identical copies of the parser
(ESP3D's and Flashforge's were unused) are replaced by one shared
PrintHost::get_err_code_from_body that reports a non-JSON reply as an error.
The upload queue now catches a failing job per job, so one bad upload no
longer leaves later jobs queued forever.
Flashforge read material station slots with nlohmann value(), which throws
on off-type fields or non-object entries. The parsing moves into
Flashforge::parse_material_slots, which reads fields leniently with the
existing try_parse_json_int and skips bad entries.
UserManager::parse_json parsed the payload before its try block; the parse
now happens inside it.
* Keep UploadFinished Paired with UploadStarted When an Upload Throws
The exception from a throwing upload was caught around perform_job, so
the UploadFinished lifecycle event was skipped and plugins saw an
upload start that never finished.
The catch now sits around the upload call. The error is reported
through the job's error callback and UploadFinished is fired with an
error code, as for any other failed upload. The worker keeps running
for the next job. The started, upload and finished sequence moved to
PrintHostJobQueue::upload_job so it can be tested without the dialog.
* Confine Updater Archive Extraction to the Target Directory
The preset updater extracted downloaded archives by appending each entry
name to the cache directory, and the network plugin installer did the same
for the plugin folder, without checking that the result stays inside it.
Move the updater's extraction into libslic3r as extract_archive_confined,
which validates every entry with is_path_within_root before writing
anything and fails the whole archive if one entry resolves outside the
target. The plugin installer now rejects such an entry the same way. Well
formed archives extract exactly as before.
* Harden Archive Extraction Against Symlinks
The plugin installer now creates a symlink entry only when its target is
relative and, joined to the link's own directory, passes
is_path_within_root, via the new is_symlink_target_within_root helper.
Before writing any entry it checks the destination with symlink_status, so
an existing symlink, dangling or not, is replaced rather than followed, and
it creates parent directories inside the existing error handling.
extract_archive_confined replaces a symlink at a destination file the same
way.
is_path_within_root now ignores a trailing separator on the root, which
previously made every path fail the check.
* Validate Plugin Symlink Targets Before Replacing Existing Files
A symlink entry's target is now read and checked before anything already
at its destination is removed or renamed aside, so an archive rejected
for its link target leaves the installed plugin files in place.
* Reject Paths with an Embedded NUL When Confining Extraction
is_path_within_root compared each component with "..", so a name such
as "..\0" passed the check. The filesystem calls stop at the NUL and
act on a shorter path than the one that was checked: a symlink target
read from a plugin archive as raw bytes was created as "..", pointing
out of the plugin directory.
A path containing a NUL is now rejected before anything touches the
filesystem, which covers every caller, including entry names taken from
the Unicode Path extra field.
* Tune pressure advance separately for each extruder variant
Pressure advance, adaptive pressure advance and its model can now take a
different value for each extruder variant of a filament, such as Standard and
High Flow nozzles, like the other per-variant filament settings. Projects
saved with one value per filament apply it to every variant of that filament,
and the addnorth BBL filaments in the Orca Filament Library are updated to the
per-variant layout.
* Move Nozzle type to each extruder's settings page
Editing other settings on an Extruder page of a single-extruder
multi-material printer no longer triggers the nozzle diameter prompt.
* Fix command-line slicing when a filament leaves out a per-variant setting
* Percent-Encode Local File URLs for Embedded Web Pages
The Home tab, setup wizard, Project tab and other embedded pages were
loaded from file:// URLs built by pasting the resources path into a
string. A '#', '%' or '?' in the install path was then read as a URL
fragment, escape or query, so the pages failed to load, for example a
portable install under D:\#OneDrive showed a directory listing instead
of the setup wizard.
Add file_url_from_path(), built on wxFileSystem::FileNameToURL, and use
it wherever a local page or image URL is built from a path. Queries such
as ?lang= are appended after the path is encoded. The wizard's printer
cover images are passed to the page as file URLs too.
* Encode the Login Error Page URL and Cover More Windows Path Forms
The login dialog's error page was still loaded from a raw resources path;
it now uses file_url_from_path like the other local pages.
The Windows file URL tests now also cover a resources path joined with a
forward-slash relative path, as the callers build them, and a UNC path.
* Build the Flush Dialog Page URLs with the Shared Helper
WipingDialog and NozzleListTable still called
wxFileSystem::FileNameToURL directly. They now go through
file_url_from_path like every other local page, so the URLs are built
in one place.
Adds a test for a resources directory with a '#' in its name, which the
plugin page check did not recognise before.
Pressure advance, adaptive pressure advance and its model can now take a
different value for each extruder variant of a filament, such as Standard and
High Flow nozzles, like the other per-variant filament settings. Projects
saved with one value per filament apply it to every variant of that filament,
and the addnorth BBL filaments in the Orca Filament Library are updated to the
per-variant layout.
* Validate OBJ Texture-Coordinate Indices
load_obj read the texture coordinates of a face without checking the
vt index, so a face referencing a vt past the end of the list read out
of bounds and crashed, and a face vertex with no vt read index -1.
Out-of-range or missing indices now fall back to a zero UV. The face
keeps its entry in the per-face UV list, so the following faces stay
aligned, and the geometry loads as before.
Negative (relative) vt indices were also rebased by dividing the float
count by 3, but each vt stores two floats.
* Reject DRC Meshes Without Positions or with Invalid Face Indices
load_drc dereferenced the POSITION attribute without checking that the
mesh has one, and trusted the decoded face indices, which the Draco
decoder does not check against the point count. Both now fail the load
cleanly. A failed vertex conversion is treated the same way.
The libslic3r tests link Draco so they can encode the malformed meshes
in-test.
* Keep OBJ Texture Coordinates That Carry a W Component
The vt parser stopped reading the optional third component when texture
coordinates were cut down to u and v, but the check that nothing is left
on the line stayed. A legal "vt u v w" line was therefore rejected and
silently dropped, shifting every later texture index. The w component is
parsed again and discarded.
The texture coordinate stride is now a named constant, OBJ_TEXCOORD_LENGTH,
used by the parser and the importer, so the relative-index rebase cannot
drift from the storage layout again.
# Description
Follow-up to #15950, where a `filename_format` using
`initial_no_support_extruder` shipped broken because the profile
validator's slice sweep never expands `filename_format`. The sweep now
expands every custom G-code and `filename_format` text shipped in any
system profile. Each printer's slice also fires the pause, template
custom G-code and clumping-detection hooks and names the output file,
and the first printer shipping a `printing_by_object_gcode` also slices
by object. Beyond each printer's default process and filament, every
compatible system process and filament carrying a template text no
earlier slice has expanded is sliced once, which takes the sweep from
1,110 to 1,248 slices (about 49 s locally, up from 43 s). While the
sweep runs, the placeholder parser also resolves variable names inside
`{if}` branches a slice does not take, so one expansion checks every
branch.
The stricter sweep found two profile bugs, fixed here: the Anycubic
Kobra X filament change G-code carried an unreachable block reading
variables only Anycubic's own slicer defines, and the Wanhao France D12
template custom G-code had an unterminated `{if}`, so adding a template
custom G-code on those printers failed the slice. It also fixes a parser
bug where a declaration such as `{local a = layer_height + 1}` failed to
parse inside a branch that is not taken.
No change to slicing output for templates that already worked: the
untaken-branch check is enabled only by the validator's slice mode, and
the parser fix only lets previously rejected templates parse.
# Screenshots/Recordings/Graphs
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## Tests
New placeholder-parser cases cover the parse fix and the untaken-branch
check: off by default it changes nothing; on, it rejects undefined names
in branches not taken, accepts names declared there, and leaves boolean
expressions (compatibility conditions) alone. The full sweep passes on
all system profiles, and planting an undefined variable in an untaken
branch of a printer's start G-code, of a non-default filament's start
G-code or of a non-default process's `filename_format`, or reverting
#15950, each fails it and names the preset. `scripts/check_profile.sh`,
`libslic3r_tests` and `fff_print_tests` pass.
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The 3MF importers read XML entries into a single expat buffer whose size is
an int, while the archive extraction used the entry's 64-bit declared size.
The two could disagree for entries declaring more than INT_MAX bytes.
Reject such entries before allocating, and use one size for the buffer, the
extraction and the parse. This applies to the BBS importer, the PrusaSlicer
importer and the PrusaSlicer fingerprint probe. The load now fails with an
error instead.
* Reject 3MF Plate IDs Below 1 Instead of Indexing Before the Plate List
The plate importer copied each plater_id from model_settings.config into the
1-based plate list after checking only the upper bound, so plater_id="0"
wrote to plate_data_list[-1] and crashed on load. Both copy sites now reject
ids below 1 with the same "invalid plate index" error already used for ids
past the end.
* Drop Malformed 3MF Paint Data Instead of Reading Past the Bitstream
Painted facets are decoded from a bitstream a nibble at a time with no bound
check, so a truncated or corrupt paint string in a 3MF (for example split
codes with no children behind them) read past the end and crashed on load and
slice. A one- or two-side split naming side 3 also indexed past the triangle's
vertices.
Every nibble read now goes through a bounds-checked reader. Loading validates
each triangle's tree and drops a malformed one with a warning, so the stored
data, used extruder states and later decoding all agree. deserialize() also
unwinds and clears any triangle whose tree is incomplete or malformed, and
has_facets() stops at a truncated triangle. Valid streams decode unchanged.
* Sanitize Server-Supplied Download File Names
The URL downloader used the file name from the Content-Disposition header
as given, without the cleaning and unused-name search applied to the
URL-derived name.
Reduce the header name to a sanitized base name with the new
sanitize_file_basename helper, which splits on both path separators and
rejects names made only of dots and spaces. Run the result through the
same unused-name search as the URL-derived name, now shared in
find_unused_filename, and fall back to the URL-derived name when nothing
usable remains.
* Sanitize Download Names Before Choosing an Unused One
The unused-name search probed the name as given and sanitized the
result afterwards, so a name whose special characters are replaced
could be mapped onto a file that already exists.
Move the search into libslic3r as find_unused_filename, sanitize first
and probe the name that is actually written. The download marker path
is shared through download_marker_path. Restore the last tried name in
the error reported when no free name is found, and cover the search
with unit tests.
* Keep Downloads on an Unused Name Until They Complete
When the server supplied the name, the download marker stayed under the
URL-derived name, so the adopted name was not reserved against other
downloads. The final rename also replaced any file that took the name
while the download ran.
Move the marker to the adopted name before any data is written, and
check the name again right before the final rename, picking the next
free name if it is taken by then.
* Sanitize the File Name of Model Import Links
The model import took the file name from the link as given and only
avoided an existing file with a substring match on the folder listing.
Reduce the name to a sanitized base name, falling back to untitled.3mf,
choose the name with the shared unused-name search, and check it again
before the final rename.
* Handle Filesystem Errors When Finishing a Model Import Download
Choosing the final name and moving the downloaded project into place
could throw from inside the download callback. Any such error now removes
the temporary file and reports the existing import failure message.
* Non-crossing infill optimization
* test triangles
* test grid
* cleaning
* Align and clip rectilinear infill paths
Generate infill coverage in the pattern's local frame, rotate triangular patterns by layer, and clip centerlines to the surface vicinity. Start closed outlines outside the surface so clipping splits them cleanly.
* Update test_fill.cpp
* Update multiline-infill.md
---------
Co-authored-by: Ian Bassi <ian.bassi@outlook.com>
# Description
Extruder variants (Standard, High Flow, extra high flow) now work on any
printer. Any vendor profile can declare them, and a multi-variant
filament picks up the right variant on every printer. In the sidebar,
users can switch the printer variant and set the nozzle volume type of
each extruder on multi-extruder printers. This also fixes a later
filament printing at the first filament's temperature on a P1S or X1C
with a High Flow nozzle. The profile checks now reject variant arrays of
the wrong size and outdated variant strings. Every shipped vendor
profile passes them, and the orca-profiles skill documents the rules.
Slicing output changes only where the wrong variant was used before.
# Screenshots/Recordings/Graphs
<img width="393" height="218" alt="Screenshot 2026-09-28 at 11 28 07 PM"
src="https://github.com/user-attachments/assets/8bee4b0e-c38c-4039-8c11-096ace6fbad0"
/>
<img width="448" height="267" alt="Screenshot 2026-09-28 at 11 28 37 PM"
src="https://github.com/user-attachments/assets/e767cd97-a5d0-4728-b010-c8ea2bc94ca7"
/>
<img width="746" height="603" alt="Screenshot 2026-09-28 at 11 28 54 PM"
src="https://github.com/user-attachments/assets/23c8af3b-c679-46e5-9fd0-2e43df0449b3"
/>
https://github.com/user-attachments/assets/10d75d72-86a3-42e8-8a95-b1627bd58e91
## Tests
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# Description
This brings back the Bambu Lab profile sync with BambuStudio, reverted
from main, along with its bed-model offset fix. The synced printers and
filaments share their start and end G-code and dual-nozzle settings
through template files that Orca did not read, so those printers had no
machine G-code. Orca now loads these templates the same way BambuStudio
does, so every synced preset comes in complete. `profile_include_dump`,
a new developer tool, compares the result with BambuStudio's.
Other vendors' profiles are unaffected. Bambu Lab profiles move to
version 02.08.00.10, so installs that took the earlier sync update too.
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# Screenshots/Recordings/Graphs
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## Tests
Unit tests cover how template settings combine with inherited and preset
settings, loaded from JSON and from the preset cache. The profile
validator passes on every shipped vendor, and every Bambu Lab preset
gets the same template values in Orca as in BambuStudio.
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A scarf joint split the loop at exactly the scarf length, so the remainder
of the segment the split landed in became the first flat segment, often a
fraction of a millimetre. The seam insertion also leaves segments of a few
micrometres at both ends of the loop, which a scarf extrudes through where a
plain loop would start or stop. With junction deviation the planner treats
such short moves as tight corners, limited by the Z axis acceleration at the
end of the ramp, and slows to a third of the wall speed or nearly halts at
the seam.
Extend the ramp to the next vertex when the remainder would be shorter than
half a scarf step, capped at a millimetre, beyond which planners treat a move
as ordinary; the scarf only grows, never shrinks. Drop the vertex next to the
seam point at either end when that segment is shorter than an eighth of a
common line width, so the loop still starts and ends at the seam; a trimmed
path loses its arc fitting and prints as line segments. Clamp the scarf
length to the trimmed loop so a scarf covering a whole loop still ends at
full flow. The descending pass reuses the same path, so both wedges stay
consistent, and a flat part that would collapse to a single point is dropped.
G-code generation collects errors raised per object, such as an empty
first layer, into one SlicingErrors exception whose own message is just
"Errors". The CLI's generic handler printed that word and recorded the
generic slicing error text, so a headless caller had nothing to act on.
Let Print render the per-object messages with each object's name, and have
the CLI catch SlicingErrors ahead of the generic handler, print that text
and record it as the result's error string. The exit code is unchanged. A
unit test lifts a cube off the bed and checks the message names the object.
# Description
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A Python printer agent plugin could take the host down, and one of its
operations could never report its result. This PR fixes both in
`PrinterAgentPluginCapabilityTrampoline.hpp`.
## Changes
### A faulty printer agent no longer throws into the GUI
`IPrinterAgent` reports failure through return values, and none of its
callers catch. A Python `raise`, a missing override or a wrongly typed
return from a printer agent plugin therefore escaped the trampoline as a
C++ exception.
Every trampoline operation now catches, logs `Printer agent plugin
'<key>': <operation> failed: <error>`, and answers with what
`NetworkAgent` returns when no printer agent is set. `BBLPrinterAgent`
returns the same values when the Bambu plug-in is unavailable:
- `-1` for every `int` status code
- `false` for `start_discovery` and `fetch_filament_info`
- `""` for `get_user_selected_machine`
- an empty `AgentInfo` for `get_agent_info` (registration already
rejects an empty agent ID)
- `FilamentSyncMode::none` for `get_filament_sync_mode`
`ORCA_PY_AGENT_OVERRIDE(ret, name, ...)` derives the fallback from the
return type through `printer_agent_failure<ret>()`, so the call sites
carry no fallback values of their own.
An exception is the safety net for plugin bugs, not an error channel. A
plugin reports an expected failure by returning a code, as the Bambu
plug-in does. A raise is logged as a failure and collapses to the
generic `-1`, so the GUI shows the generic message instead of the
specific one (`-18` cancelled, `-4020` FTP upload failed, …).
### `bind_detect` results now reach the host
`detect` is an out-parameter (`detectResult&`). pybind11 casts a
reference argument to an override with a copy, so a plugin that filled
in `detect` wrote to a throwaway object and the host always saw an empty
`detectResult`. It is now passed so that Python edits the caller's
struct. Plugins see the same `DetectResult` argument as before.
## TODO
- Expose the `BAMBU_NETWORK_*` return codes to Python (the
`orca.printer_agent` binding and the generated stub from
`scripts/generate_orca_python_stubs.py`). Plugins can already return
them, but only as hard-coded numbers.
# Screenshots/Recordings/Graphs
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## Tests
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changes made in this PR.
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- New `tests/slic3rutils/test_plugin_printer_agent.cpp`: an agent whose
operations raise, one that omits them, and one that returns the wrong
type all answer like a missing agent, and the interpreter stays usable.
A working agent's answers reach the host unchanged, including
`request_bind_ticket`'s out-param and the fields a plugin writes into
`bind_detect`'s `detect`.
- The `bind_detect` check failed before the fix (`"" == "192.168.0.2"`)
and passes after.
- `slic3rutils` passes under `ctest` (144/144); full Release build clean
on Linux.
- End to end on Linux with a test plugin whose chosen operations raise
(`start_discovery`, `get_filament_sync_mode`, `disconnect_printer`):
selecting the plugin's agent in the printer preset and switching back
logged each raise as a `Printer agent plugin '…': <operation> failed`
line, and the app kept running and closed cleanly (exit 0). Without the
guard, the first raise (`start_discovery`, on selecting the agent) ended
the app with `Uncaught exception` and SIGABRT (exit 134); that run used
a build whose printer-agent files are identical to `main`.
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pybind11 copies a reference argument to an override, so a Python
printer agent that filled in detect wrote to a throwaway object and the
host always saw an empty detectResult. Pass it as a pointer so Python
edits the caller's struct.
orca.host.ui.create_dock_panel(html, title, width, height, on_message,
on_close, dock) hosts plugin HTML in a pane of the Plater's dock manager,
next to the sidebar, and returns a UiDockPanel handle
(post/show/hide/close/is_open). The arguments follow create_window(). The
panel uses the window.orca bridge of plugin windows, restores its position
and size from the saved window layout, hides with the Plater off the Prepare
and Preview tabs when floating, and is closed with its plugin; plugin panes
are removed in MainFrame::shutdown().
The web view hosting moves out of PluginPage into a shared WebPanel base:
bootstrap page and swap to the plugin HTML, theme, element-default and
bridge scripts, window.orca message parsing, delivery to the page, and live
re-theming, also re-applied on every load after the swap. Pages tabs and
docked panels both derive from it. Pages tabs now re-theme in place on a
theme change instead of being reloaded, and a window.orca call a host does
not support is logged.
What the hosts share no longer lives in one of them: the bootstrap page, the
base URL and the plugin-window bridge move to Widgets/WebHosting, used by
WebDialog and WebPanel alike. The Plater restores plugin panes with a new
saved-layout parser, GUI/AuiPaneLayout, kept in its own small header so
slic3rutils can test it without pulling in the Plater.
The web hosting classes carry no plugin name, so other hosts can reuse them:
PluginWebDialog becomes WebDialog (its bootstrap page moves to
resources/web/dialog/WebDialog), and destroy_for_plugin(),
load_plugin_content() and plugin_defaults_user_script() become
destroy_silently(), load_page_html() and element_defaults_user_script().
Includes a sample plugin (sandboxes/orca_dock_panel_plugin_any.py) and
binding and layout-helper tests in slic3rutils.
IPrinterAgent callers do not catch, so a Python raise, a missing
override or a wrongly typed return from a printer agent plugin escaped
into the GUI. Each trampoline operation now logs the failure and
answers with NetworkAgent's no-agent value: -1 for status codes, the
empty value otherwise.
Hanif Koh