More Controlled 3MF Import: Printer Preset Handling & Filament Mapping For Color Zones #988

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MrUnknownDE · 2026-04-05T16:40:03+02:00

MrUnknownDE commented

2026-04-05 16:40:03 +02:00

Originally created by @Clonephaze on 1/23/2026

Multi-color FDM projects can be frustrating to import because original printer and filament presets often overwrite a user’s setup, causing color zones to be lost. This PR adds flexible import modes and filament color mapping so users can preserve their workspace while retaining multi-color designs. Optional dialog checkboxes and preference settings give control over which project settings are applied, improving usability for shared 3MF files and complex multi-color prints.

Main Points

Flexible Import Modes

Open as Project: Import geometry, printer, and filament settings (original behavior)
Import Geometry Only: Load models without touching any presets
Selective Preset Import: Skip printer settings, filament settings, or both via dialog checkboxes
Print settings automatically skip when printer is skipped to maintain preset compatibility

Filament Color Mapping

Visual mapping interface displays project colors alongside user's compatible filament presets
Dropdowns filtered by visibility and compatibility (matches sidebar behavior)
Grouped by vendor with split headers for better organization
Hex color validation and robust fallback handling

Preferences Integration

New checkboxes under Preferences → Project to skip printer/filament presets when "Load All" is selected
Dialog respects preference defaults while remaining fully interactive
Per-import overrides available for workflow flexibility

More details

Modified Files

Import3mfDialog.hpp / .cpp: New import dialog with radio options, checkboxes, and filament mapping UI
Plater.cpp: Skip logic, preset save/restore, validation gating, bed recentering
PresetBundle.cpp: Config loading with skip flags; embedded preset filtering
bbs_3mf.cpp: Pre-parse project info (filament colors, preset names)
Preferences.cpp: Added skip checkboxes in Project section
WebViewDialog.cpp: Deferred file loading to avoid modal reentrancy

LoadStrategy Flags

SkipPrinterConfig (256): Skip printer and print presets
SkipFilamentConfig (512): Skip filament presets; enables color mapping

Testing

Manual testing across all import modes and preference combinations
Verified filament mapping with multi-color projects
Confirmed preset save/restore and validation suppression
Tested WebView-driven imports (no reentrancy warnings)

Screenshots/Videos

3mfImportOverhaul.webm

*Originally created by @Clonephaze on 1/23/2026* Multi-color FDM projects can be frustrating to import because original printer and filament presets often overwrite a user’s setup, causing color zones to be lost. This PR adds flexible import modes and filament color mapping so users can preserve their workspace while retaining multi-color designs. Optional dialog checkboxes and preference settings give control over which project settings are applied, improving usability for shared 3MF files and complex multi-color prints. ### Main Points **Flexible Import Modes** - **Open as Project**: Import geometry, printer, and filament settings (original behavior) - **Import Geometry Only**: Load models without touching any presets - **Selective Preset Import**: Skip printer settings, filament settings, or both via dialog checkboxes - Print settings automatically skip when printer is skipped to maintain preset compatibility **Filament Color Mapping** - Visual mapping interface displays project colors alongside user's compatible filament presets - Dropdowns filtered by visibility and compatibility (matches sidebar behavior) - Grouped by vendor with split headers for better organization - Hex color validation and robust fallback handling **Preferences Integration** - New checkboxes under Preferences → Project to skip printer/filament presets when "Load All" is selected - Dialog respects preference defaults while remaining fully interactive - Per-import overrides available for workflow flexibility ### More details **Modified Files** - Import3mfDialog.hpp / .cpp: New import dialog with radio options, checkboxes, and filament mapping UI - Plater.cpp: Skip logic, preset save/restore, validation gating, bed recentering - PresetBundle.cpp: Config loading with skip flags; embedded preset filtering - bbs_3mf.cpp: Pre-parse project info (filament colors, preset names) - Preferences.cpp: Added skip checkboxes in Project section - WebViewDialog.cpp: Deferred file loading to avoid modal reentrancy **LoadStrategy Flags** - `SkipPrinterConfig` (256): Skip printer and print presets - `SkipFilamentConfig` (512): Skip filament presets; enables color mapping **Testing** - Manual testing across all import modes and preference combinations - Verified filament mapping with multi-color projects - Confirmed preset save/restore and validation suppression - Tested WebView-driven imports (no reentrancy warnings) **Screenshots/Videos**  <img width="379" height="318" alt="image" src="https://github.com/user-attachments/assets/6185eb9c-3836-4419-8fc9-6f7c78df8729" /> <img width="718" height="599" alt="image" src="https://github.com/user-attachments/assets/5b57b9eb-e67d-4ff4-909a-4c4393cbdab4" /> <img width="479" height="137" alt="image" src="https://github.com/user-attachments/assets/22105025-3fa2-439f-8b9d-423c459201c1" /> [3mfImportOverhaul.webm](https://github.com/user-attachments/assets/818b05fc-72f5-4f18-9693-811360295158)

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Reference: github/OrcaSlicer#988