add new class pyInstrumentView providing access to qt instrumentview

qt/python/mantidqt/widgets/instrumentview/instrument_view.py

+#!/usr/bin/env python
+
+import functools
+from enum import IntEnum
+from mantidqt.utils.qt.qappthreadcall import QAppThreadCall
+from mantidqt.widgets.instrumentview.presenter import InstrumentViewPresenter
+
+
+def safe_qthread(func):
+    @functools.wraps(func)
+    def _wrapped(*args, **kwargs):
+        return QAppThreadCall(func)(*args, **kwargs)
+
+    return _wrapped
+
+
+class SurfaceType(IntEnum):
+    Full3D = 0
+    CylindricalX = 1
+    CylindricalY = 2
+    CylindricalZ = 3
+    SphericalX = 4
+    SphericalY = 5
+    SphericalZ = 6
+    SideBySide = 7
+
+
+class TabName(IntEnum):
+    Render = 0
+    Pick = 1
+    Draw = 2
+    Instrument = 3
+
+
+class pyInstrumentView:
+    def __init__(self, workspace):
+        self._ws = workspace
+        self.presenter = self._get_presenter()
+        self.rendertab = self._get_rendertab()
+
+    @safe_qthread
+    def show_view(self):
+        return self.presenter.show_view()
+
+    @safe_qthread
+    def _get_presenter(self):
+        return InstrumentViewPresenter(self._ws)
+
+    @safe_qthread
+    def _get_rendertab(self):
+        return self.presenter.get_render_tab()
+
+    @safe_qthread
+    def _turn_off_autoscaling(self):
+        return self.rendertab.setColorMapAutoscaling(False)
+
+    @safe_qthread
+    def set_axis(self, newaxis):
+        return self.rendertab.setAxis(newaxis)
+
+    @safe_qthread
+    def set_tof_range(self, minval, maxval):
+        return self.presenter.container.set_range(minval, maxval)
+
+    @safe_qthread
+    def set_intensity_min(self, val):
+        self._turn_off_autoscaling()
+        return self.rendertab.setMinValue(val, True)
+
+    @safe_qthread
+    def set_intensity_max(self, val):
+        self._turn_off_autoscaling()
+        return self.rendertab.setMaxValue(val, True)
+
+    def set_intensity_range(self, minval, maxval):
+        self.set_intensity_min(minval)
+        self.set_intensity_max(maxval)
+
+    @safe_qthread
+    def select_tab(self, tab_name):
+        assert isinstance(tab_name, TabName)
+        return self.presenter.container.select_tab(int(tab_name))
+
+    @safe_qthread
+    def select_surface_type(self, surface_type):
+        assert isinstance(surface_type, SurfaceType)
+        return self.rendertab.setSurfaceType(int(surface_type))
+
+
+if __name__ == "__main__":
+    from mantid.simpleapi import LoadEventNexus, mtd
+
+    nexus_path = (
+        "/SNS/EQSANS/shared/sans-backend/data/new/ornl/sans/hfir/gpsans/CG2_9177.nxs.h5"
+    )
+    ws = LoadEventNexus(Filename=nexus_path, NumberOfBins=10)
+
+    myiv = pyInstrumentView(ws)
+    myiv.show_view()