Awesome

Interactive Qt graphViz display

Features :

• Use cgraph lib (C++ API wrapper)
• Support edges : label on edge, simple arrow both direction
• Support Nodes : box or ellipse shape, image on Node
• Support subGraphs
• Interactions with node and edge (context menu and double click)
• Zoom/move on graph
• Tested only on dot engine
• Only 6 headers/sources files to add

Screen capture :

• Windows binairies demo here : https://github.com/nbergont/qgv/releases

Installation :

• Download qgv sources from GIT : git clone https://github.com/nbergont/qgv.git
• Download graphViz librairie : http://www.graphviz.org/Download.php
• Configure GRAPHVIZ_PATH in QGraphViz.pro
• Open with Qt Creator & compile

For macOS :

• Download qgv sources from GIT : git clone https://github.com/nbergont/qgv.git
• Install Brew packet manager : https://brew.sh
• Install Graphviz via brew : $ brew install graphviz
• Install pkg-config via brew : $ brew install pkg-config
• Open with Qt Creator & compile

TODO :

• Support more attributes of Graphviz
• Add more comments
• Support head/tail label on edge
• Fully support layout from dot language (may be works...)
• Dynamicaly move node and redraw layout ? (I dont know if it's possible) : not possible

Good lecture on subject :

• Steve Dodier-Lazaro : http://www.mupuf.org/blog/2010/07/08/how_to_use_graphviz_to_draw_graphs_in_a_qt_graphics_scene/
• Arvin Schnell : http://arvin.schnell-web.net/qgraph/

Other similar projects (you must look before lose time with GraphViz) :

• Constraint-based diagram editor : https://github.com/mjwybrow/dunnart (Probably best one ! Awesome work ...)
• OGDF - Open Graph Drawing Framework : http://www.ogdf.net/doku.php (Very good library, better than GraphViz !)