FreeCAD/FreeCAD

VarSet: Drag-n-drop properties between Groups

Open

#28578 opened on Mar 23, 2026

View on GitHub
 (1 comment) (0 reactions) (0 assignees)C++ (30,913 stars) (5,550 forks)batch import
Good first issueMod: CoreTopic: User InterfaceTopic: VarSetType: Feature

Description

Problem description

Ability to hold left mouse button on a property and drag it into another group. Also, add ability to manually reorder items inside each group and reorder whole groups as well

Workbench affected?

None

Steps to reproduce

Expected behavior

Basic UX works in varset data view

Actual behavior

Useless selection happens when dragging items in the VarSet Data View

Development version About Info (in Safe Mode)

OS: Windows 11 build 26200
Architecture: x86_64
Version: 1.1.0rc3.20260223 (Git shallow)
Build date: 2026/02/23 23:43:19
Build type: Release
Branch: (HEAD detached at adf7760)
Hash: adf77600e2526bf02804524f0d1991ab1c534abe
Python 3.11.14, Qt 6.8.3, Coin 4.0.3, Vtk 9.3.1, boost 1_86, Eigen3 3.4.0, PySide 6.8.3
shiboken 6.8.3, xerces-c 3.3.0, IfcOpenShell 0.8.4, OCC 7.8.1
Locale: Russian/Russia (ru_RU)
Navigation Style/Orbit Style/Rotation Mode: CAD/Rounded Arcball/Window center
Stylesheet/Theme/QtStyle: FreeCAD.qss/FreeCAD Dark/
Logical DPI/Physical DPI/Pixel Ratio: 96/108.888/1

Last known good version (optional)

Contributor guide

Tech stack
cpp
Domain
desktop
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
C++QtFreeCAD VarSet internalsdrag and drop UI patterns
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
First, examine the VarSet data view implementation in FreeCAD, likely in `src/Mod/Start/App/VarSet.cpp` or similar. Study Qt's drag and drop framework, focusing on QDrag and QDropEvent. Look at existing drag and drop examples in FreeCAD, such as the Tree view or property editor, for patterns. The feature requires enabling drag on property items and drop on group headers, supporting reordering within and between groups. A good starting point is to add simple reordering within a single group, then extend to cross group drag. Check comments for any additional requirements.