Plugins

PyStream’s core plugins for viewing, measuring, and processing image data.

• HDF5 Viewer — view HDF5 image stacks with flat-field correction.

• Rectangle ROI, Ellipse ROI, Line Profile — region selection and intensity profiles.

• Scale Bar — calibrated scale-bar overlay.

• Python Console — run Python on the live image.

• Image Metrics — live image-quality metrics.

• Mosaic Alignment — 2D motor scan with stitched preview.

Adding a plugin

1. Add a Python module under src/pystream/plugins/.

2. Define a QDialog or QWidget class with class attribute BUTTON_TEXT = "...". Most plugins also set HANDLER_TYPE = 'singleton'.

3. Wire the button into the main toolbar in src/pystream/pystream.py — copy an existing handler such as _open_metrics() and adapt.