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Split up mantidplot.py and move it into a directory. Re #1037.
mantidplot.py is starting to get big, and once all the proxy business for qti objects is added is will really swell. So the proxy objects will go in a separate file and everything is in a mantidplot directory that is imported. It shouldn't matter if an old mantidplot.py is lying around in the old place - python will prefer to import the directory. Fingers crossed that I've got the installation settings right.
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| from mantidplot import * |
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| """ | ||
| Module containing classes that act as proxies to the various MantidPlot gui objects that are | ||
| accessible from python. They listen for the QObject 'destroyed' signal and set the wrapped | ||
| reference to None, thus ensuring that further attempts at access do not cause a crash. | ||
| """ | ||
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| from PyQt4 import QtCore | ||
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| #----------------------------------------------------------------------------- | ||
| #--------------------------- Proxy Objects ----------------------------------- | ||
| #----------------------------------------------------------------------------- | ||
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| #----------------------------------------------------------------------------- | ||
| class QtProxyObject(QtCore.QObject): | ||
| """Generic Proxy object for wrapping Qt C++ Qobjects. | ||
| This holds the QObject internally and passes methods to it. | ||
| When the underlying object is deleted, the reference is set | ||
| to None to avoid segfaults. | ||
| """ | ||
| def __init__(self, toproxy): | ||
| QtCore.QObject.__init__(self) | ||
| self.__obj = toproxy | ||
| # Connect to track the destroyed | ||
| QtCore.QObject.connect( self.__obj, QtCore.SIGNAL("destroyed()"), | ||
| self._heldObjectDestroyed) | ||
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| def _heldObjectDestroyed(self): | ||
| """Slot called when the held object is destroyed. | ||
| Sets it to None, preventing segfaults """ | ||
| self._kill_object() | ||
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| def __getattr__(self, attr): | ||
| """ | ||
| Reroute a method call to the the stored object | ||
| """ | ||
| return getattr(self._getHeldObject(), attr) | ||
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| def __str__(self): | ||
| """ | ||
| Return a string representation of the proxied object | ||
| """ | ||
| return str(self._getHeldObject()) | ||
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| def __repr__(self): | ||
| """ | ||
| Return a string representation of the proxied object | ||
| """ | ||
| return `self._getHeldObject()` | ||
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| def _getHeldObject(self): | ||
| """ | ||
| Returns a reference to the held object | ||
| """ | ||
| return self.__obj | ||
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| def _kill_object(self): | ||
| """ | ||
| Release the stored instance | ||
| """ | ||
| self.__obj = None | ||
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| def _swap(self, obj): | ||
| """ | ||
| Swap an object so that the proxy now refers to this object | ||
| """ | ||
| self.__obj = obj | ||
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| #----------------------------------------------------------------------------- | ||
| class SliceViewerWindowProxy(QtProxyObject): | ||
| """Proxy for a C++ SliceViewerWindow object. | ||
| It will pass-through method calls that can be applied to the | ||
| SliceViewer widget contained within. | ||
| """ | ||
| def __init__(self, toproxy): | ||
| QtProxyObject.__init__(self, toproxy) | ||
| # List of methods in slicer to pass-through | ||
| self.slicer_methods = ["setWorkspace", "getWorkspaceName", "showControls", "openFromXML", "saveImage", "setXYDim", "setXYDim", "getDimX", "getDimY", "setSlicePoint", "setSlicePoint", "getSlicePoint", "getSlicePoint", "setXYLimits", "getXLimits", "getYLimits", "zoomBy", "setXYCenter", "resetZoom", "loadColorMap", "setColorScale", "setColorScaleMin", "setColorScaleMax", "setColorScaleLog", "getColorScaleMin", "getColorScaleMax", "getColorScaleLog", "setColorScaleAutoFull", "setColorScaleAutoSlice", "setFastRender", "getFastRender"] | ||
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| def __getattr__(self, attr): | ||
| """ | ||
| Reroute a method call to the the stored object | ||
| """ | ||
| if self._getHeldObject() is None: | ||
| raise Exception("Error! The SliceViewerWindow has been deleted.") | ||
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| # Pass-through to the contained SliceViewer widget. | ||
| sv = self._getHeldObject().getSlicer() | ||
| if attr in self.slicer_methods: | ||
| return getattr(sv, attr) | ||
| else: | ||
| return getattr(self._getHeldObject(), attr) | ||
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| def __str__(self): | ||
| """ | ||
| Return a string representation of the proxied object | ||
| """ | ||
| if self._getHeldObject() is None: | ||
| return "None" | ||
| else: | ||
| return 'SliceViewerWindow(workspace="%s")' % self._getHeldObject().getSlicer().getWorkspaceName() | ||
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| def __repr__(self): | ||
| """ | ||
| Return a string representation of the proxied object | ||
| """ | ||
| return `self._getHeldObject()` | ||
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| def __dir__(self): | ||
| """ | ||
| Returns the list of attributes for this object. | ||
| Might allow tab-completion to work under ipython | ||
| """ | ||
| return self.slicer_methods | ||
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