interactivechartview.h File Reference

Slice AT.2 — QChartView subclass with Select / Pan / ZoomIn / ZoomOut modes mirroring ProfilePlotDialog's QActionGroup pattern. More...

#include <QChartView>
#include <QDateTime>
#include <QPoint>
#include <QRect>
#include <QTimer>

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Classes
class	openswmmvis::ui::InteractiveChartView

Namespaces
namespace	openswmmvis
namespace	openswmmvis::ui

Detailed Description

Slice AT.2 — QChartView subclass with Select / Pan / ZoomIn / ZoomOut modes mirroring ProfilePlotDialog's QActionGroup pattern.

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

ComparisonPlotDialog uses Qt Charts for its chart rows. Qt Charts ships with a default rubber-band-zoom hook (setRubberBand) but the semantics are too narrow for our needs:

• rubber-band only zooms IN; we want OUT too,
• pan defaults to middle-button only / no left-button-pan mode,
• no first-class concept of a "Select" mode that just passes events through for cursor read-out.

InteractiveChartView handles all four modes uniformly via overridden mouse events that drive QChart::scroll(dx, dy), QChart::zoomIn(rect), and QChart::zoomReset(). Wheel scroll is mode-agnostic — always zooms about the cursor.

The widget emits chartContextMenuRequested(globalPos) instead of popping its own menu so the dialog can build a row-aware context menu (Copy as Image / Reset Zoom / Hide Cursor / Remove Row / Options …).