sectionpreviewwidget.h File Reference

QWidget host that paints one SectionDiagramModel. More...

#include <QPointF>
#include <QRectF>
#include <QWidget>
#include "ui/sectionview/sectiondiagram.h"

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Classes
class	openswmmvis::sectionview::SectionPreviewWidget

Namespaces
namespace	openswmmvis
namespace	openswmmvis::sectionview

Detailed Description

QWidget host that paints one SectionDiagramModel.

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

Slice SP.2 (workplans/SECTION_PREVIEW_WORKPLAN.md).

Deliberately dumb: it owns a model, repaints when the model is replaced, and nothing else. Every surface that shows a section diagram — the Section View dock, the cross-section editor, the LID editor — hosts one of these and feeds it from its own builder, so the drawing code exists once.

Follows the StreetSectionPreview / StylePreviewSwatch idiom already in the codebase (plain QWidget + paintEvent, palette-driven colours).