openswmmvisgraphicsview.h File Reference

Transparent QGraphicsView overlay that sits on top of the MapCanvas raster buffer, hosting interactive vector items in scene coordinates. More...

#include <QGraphicsView>

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Classes
class	OpenSWMMVisGraphicsView
	Transparent QGraphicsView overlay for interactive vector content in the MapCanvas. More...

Detailed Description

Transparent QGraphicsView overlay that sits on top of the MapCanvas raster buffer, hosting interactive vector items in scene coordinates.

Author

Caleb Buahin caleb.nosp@m..bua.nosp@m.hin@g.nosp@m.mail.nosp@m..com

Date

2026

License\n GPL-3.0-or-later

OpenSWMMVisGraphicsView is a thin subclass of QGraphicsView used by the MapCanvas two-layer compositing strategy. It is made transparent (Qt::WA_TranslucentBackground) so the raster buffer painted in the parent widget remains visible underneath. Mouse and keyboard events are forwarded to the active map tool rather than processed directly by the view.