ft.py

# coding: utf-8
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__authors__ = ["H. Payno"]
__license__ = "MIT"
__date__ = "06/07/2019"


import logging
from Orange.widgets import gui
from PyMca5.PyMcaGui.physics.xas.XASFourierTransformParameters import (
    XASFourierTransformParameters,
)
from silx.gui import qt
from silx.gui.plot import LegendSelector
import est.core.process.pymca.ft
from orangecontrib.est.process import _ProcessForOrangeMixIn
from est.gui.XasObjectViewer import XasObjectViewer, ViewType
from est.gui.XasObjectViewer import _normalized_exafs, _ft_window_plot
from est.gui.XasObjectViewer import _ft_intensity_plot, _ft_imaginary_plot
from ewokscore.hashing import MissingData


from orangecontrib.est.widgets.container import _ParameterWindowContainer

_logger = logging.getLogger(__file__)


class FTWindow(qt.QMainWindow):
    def __init__(self, parent=None):
        qt.QMainWindow.__init__(self, parent)

        # xas object viewer
        self.xasObjViewer = XasObjectViewer(
            mapKeys=["Mu"], spectrumPlots=("FTWindow", "FTIntensity")
        )
        self.xasObjViewer._spectrumViews[0]._plotWidget.getXAxis().setLabel("K")

        self.xasObjViewer._spectrumViews[1]._plotWidget.getXAxis().setLabel(
            "R (Angstrom)"
        )
        self.xasObjViewer._spectrumViews[1]._plotWidget.getYAxis().setLabel(
            "Arbitrary Units"
        )
        self.setCentralWidget(self.xasObjViewer)
        self._pymcaWindow = _ParameterWindowContainer(
            parent=self, parametersWindow=XASFourierTransformParameters
        )
        dockWidget = qt.QDockWidget(parent=self)

        # pymca window
        dockWidget.setWidget(self._pymcaWindow)
        self.addDockWidget(qt.Qt.RightDockWidgetArea, dockWidget)
        dockWidget.setAllowedAreas(qt.Qt.RightDockWidgetArea | qt.Qt.LeftDockWidgetArea)
        dockWidget.setFeatures(qt.QDockWidget.NoDockWidgetFeatures)

        # legend selectors
        self.legendDockWidget1 = LegendSelector.LegendsDockWidget(
            parent=self, plot=self.xasObjViewer._spectrumViews[0]._plotWidget
        )
        self.legendDockWidget1.setAllowedAreas(
            qt.Qt.RightDockWidgetArea | qt.Qt.LeftDockWidgetArea
        )
        self.legendDockWidget1.setFeatures(qt.QDockWidget.NoDockWidgetFeatures)
        self.addDockWidget(qt.Qt.RightDockWidgetArea, self.legendDockWidget1)

        self.legendDockWidget2 = LegendSelector.LegendsDockWidget(
            parent=self, plot=self.xasObjViewer._spectrumViews[1]._plotWidget
        )
        self.legendDockWidget2.setAllowedAreas(
            qt.Qt.RightDockWidgetArea | qt.Qt.LeftDockWidgetArea
        )
        self.legendDockWidget2.setFeatures(qt.QDockWidget.NoDockWidgetFeatures)
        self.addDockWidget(qt.Qt.RightDockWidgetArea, self.legendDockWidget2)

        # volume key selection
        self.addDockWidget(
            qt.Qt.RightDockWidgetArea, self.xasObjViewer._mapView.keySelectionDocker
        )

        # plot settings
        for ope in (_normalized_exafs, _ft_window_plot):
            self.xasObjViewer._spectrumViews[0].addCurveOperation(ope)

        for ope in (_ft_intensity_plot, _ft_imaginary_plot):
            self.xasObjViewer._spectrumViews[1].addCurveOperation(ope)

        self.setWindowFlags(qt.Qt.Widget)

        # connect signal / slot
        self.xasObjViewer.viewTypeChanged.connect(self._updateLegendView)

        # set up
        self._updateLegendView()

    def getNCurves(self):
        return len(self.plot.getAllCurves())

    def _updateLegendView(self):
        index, viewType = self.xasObjViewer.getViewType()
        self.legendDockWidget1.setVisible(viewType is ViewType.spectrum and index == 0)
        self.legendDockWidget2.setVisible(viewType is ViewType.spectrum and index == 1)
        self.xasObjViewer._mapView.keySelectionDocker.setVisible(
            viewType is ViewType.map
        )


class FTOW(_ProcessForOrangeMixIn, ewokstaskclass=est.core.process.pymca.ft.PyMca_ft):
    """
    Widget used for signal extraction
    """

    name = "fourier transform"
    id = "orange.widgets.est.pymca.ft"
    description = "Progress fourier transform"
    icon = "icons/ft.png"
    priority = 4
    category = "esrfWidgets"
    keywords = ["spectroscopy", "signal", "fourier", "transform", "fourier transform"]

    want_main_area = True
    resizing_enabled = True

    def __init__(self):
        super().__init__()
        self._window = FTWindow(parent=self)
        layout = gui.vBox(self.mainArea, "fourier transform").layout()
        layout.addWidget(self._window)

        ft_params = self.task_input_values.get("ft", MissingData)
        if ft_params is not MissingData:
            self._window._pymcaWindow.setParameters(ft_params)

        # signal / slot connection
        self._window._pymcaWindow.sigChanged.connect(self._updateProcess)

    def _updateProcess(self, *arv, **kwargs):
        self.receiveDynamicInputs("ft", self._window._pymcaWindow.getParameters())
        self.handleNewSignals()