annotationlayer.h File Reference

Layer holding user-placed text annotations. More...

#include "layers/openswmmvislayer.h"
#include <QHash>
#include <QJsonArray>
#include <QString>
#include <QVector>

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Classes
class	OpenSWMMVisAnnotationLayer

Detailed Description

Layer holding user-placed text annotations.

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

Mirrors GISVectorLayer's populate / depopulate / refresh pattern: the data model (AnnotationTextItem*'s) is persistent across scene rebuilds; the QGraphicsItem instances are throwaway, recreated on canvas CRS change.

Positions are stored in the layer's CRS (typically inherited from the SWMM model layer). On populate, each position is reprojected to canvas CRS so the annotation stays pinned to its map location.