def OnPaint(self, event): """This method is overridden temporarily in order to create the light manager. This is necessary because it makes sense to create the light manager only when the widget is realized. Only when the widget is realized is the VTK render window created and only then are the default lights all setup correctly. This handler is removed on the first Paint event and the default paint handler of the wxVTKRenderWindowInteractor is used instead.""" # Call the original handler (this will Show the widget) self._vtk_control.OnPaint(event) if len(self.renderer.lights) == 0: # The renderer is not ready yet, we do not do anything, and # we do not remove this callback, so that it will be called # later. return # Now create the light manager. self.light_manager = light_manager.LightManager(self) renwin = self._renwin renwin.update_traits() vtk_rw = tvtk.to_vtk(renwin) renwin.add_observer('StartEvent', messenger.send) messenger.connect(vtk_rw, 'StartEvent', self._start_event_callback) renwin.add_observer('EndEvent', messenger.send) messenger.connect(vtk_rw, 'EndEvent', self._end_event_callback) # Reset the event handler to the default since our job is done. wx.EVT_PAINT(self._vtk_control, None) # Remove the default handler. wx.EVT_PAINT(self._vtk_control, self._vtk_control.OnPaint)
def test_send_on_dead_ref(self): """Test if sending to a gc'd callback works gracefully.""" class C: def foo(self, o, e): pass c = C() c1 = C() messenger.connect(c1, 'foo', c.foo) messenger.send(c1, 'foo') # Test if things behave sanely if a message was sent and one # of the callbacks has been gc'd. m = messenger.Messenger() l1 = len(m._signals[hash(c1)]['foo']) # del c messenger.send(c1, 'foo') # l2 = len(m._signals[hash(c1)]['foo']) # Since 'c' is gc'd this callback should have been cleared # out. self.assertEqual(l2, l1 - 1) # Clean up. messenger.disconnect(c1)
def _data_changed(self, old, new): """When the vtk dataset changes, adjust the pipeline accordingly so that we sync against the new dataset""" if has_attributes(self.data): aa = self._assign_attribute self.configure_input_data(aa, new) self._update_vtk_dataset_content() aa.update() self.outputs = [aa.output] else: self.outputs = [self.data] # Notify the pipeline to refresh against the new data. self.data_changed = True self.output_info.datasets = \ [get_tvtk_dataset_name(self.outputs[0])] # Add an observer to the VTK dataset after removing the one # for the old dataset. We use the messenger to avoid an # uncollectable reference cycle. See the # tvtk.messenger module documentation for details. if old is not None: old.remove_observer(self._observer_id) self._observer_id = new.add_observer('ModifiedEvent', messenger.send) new_vtk = tvtk.to_vtk(new) messenger.connect(new_vtk, 'ModifiedEvent', self._fire_data_changed)
def _data_changed(self, old, new): if has_attributes(self.data): aa = self._assign_attribute self.configure_input_data(aa, new) self._update_data() aa.update() self.outputs = [aa.output] else: self.outputs = [self.data] self.data_changed = True self.output_info.datasets = \ [get_tvtk_dataset_name(self.outputs[0])] # Add an observer to the VTK dataset after removing the one # for the old dataset. We use the messenger to avoid an # uncollectable reference cycle. See the # tvtk.messenger module documentation for details. if old is not None: old.remove_observer(self._observer_id) self._observer_id = new.add_observer('ModifiedEvent', messenger.send) new_vtk = tvtk.to_vtk(new) messenger.connect(new_vtk, 'ModifiedEvent', self._fire_data_changed) # Change our name so that our label on the tree is updated. self.name = self._get_name()
def _setup_listners(self): object = self.object kids = self.children_cache for key, val in kids.items(): if isinstance(val, tvtk.Collection): vtk_obj = tvtk.to_vtk(val) messenger.connect(vtk_obj, 'ModifiedEvent', self._notify_children) else: object.on_trait_change(self._notify_children, key)
def _object_changed(self, old, new): self.outputs = [new] self.browser.root_object = [new] self.output_info.datasets = get_tvtk_dataset_name(new) if old is not None: old.remove_observer(self._observer_id) self._observer_id = new.add_observer('ModifiedEvent', messenger.send) new_vtk = tvtk.to_vtk(new) messenger.connect(new_vtk, 'ModifiedEvent', self._fire_data_changed) self.name = self._get_name()
def _recorder_changed(self, r): """When the recorder is set we add an event handler so we can record the change to the camera position after the interaction. """ iren = self._interactor if r is not None: self._script_id = r.get_script_id(self) id = iren.add_observer("EndInteractionEvent", messenger.send) self._camera_observer_id = id i_vtk = tvtk.to_vtk(iren) messenger.connect(i_vtk, "EndInteractionEvent", self._record_camera_position) else: self._script_id = "" iren.remove_observer(self._camera_observer_id) i_vtk = tvtk.to_vtk(iren) messenger.disconnect(i_vtk, "EndInteractionEvent", self._record_camera_position)
def test_catchall(self): """Tests if catch all handlers are called.""" b = B() b.send() self.assertEqual(b.a.event, 'method') self.assertEqual(b.a.args, ()) self.assertEqual(b.a.kw, {}) self.assertEqual(b.a.did_catch_all, 0) messenger.connect(b, 'AnyEvent', b.a.catch_all_cb) b.send(1, test=1) self.assertEqual(b.a.event, 'method') self.assertEqual(b.a.args, (1, )) self.assertEqual(b.a.kw, {'test': 1}) self.assertEqual(b.a.did_catch_all, 1) b.a.did_catch_all = 0 messenger.disconnect(b, 'AnyEvent') b.send(1, test=1) self.assertEqual(b.a.did_catch_all, 0)
def test_catchall(self): """Tests if catch all handlers are called.""" b = B() b.send() self.assertEqual(b.a.event, 'method') self.assertEqual(b.a.args, ()) self.assertEqual(b.a.kw, {}) self.assertEqual(b.a.did_catch_all, 0) messenger.connect(b, 'AnyEvent', b.a.catch_all_cb) b.send(1, test=1) self.assertEqual(b.a.event, 'method') self.assertEqual(b.a.args, (1,)) self.assertEqual(b.a.kw, {'test':1}) self.assertEqual(b.a.did_catch_all, 1) b.a.did_catch_all = 0 messenger.disconnect(b, 'AnyEvent') b.send(1, test=1) self.assertEqual(b.a.did_catch_all, 0)
def _recorder_changed(self, r): """When the recorder is set we add an event handler so we can record the change to the camera position after the interaction. """ iren = self._interactor if r is not None: self._script_id = r.get_script_id(self) id = iren.add_observer('EndInteractionEvent', messenger.send) self._camera_observer_id = id i_vtk = tvtk.to_vtk(iren) messenger.connect(i_vtk, 'EndInteractionEvent', self._record_camera_position) else: self._script_id = '' iren.remove_observer(self._camera_observer_id) i_vtk = tvtk.to_vtk(iren) messenger.disconnect(i_vtk, 'EndInteractionEvent', self._record_camera_position)
def paintEvent(self, e): """ Reimplemented to create the light manager only when needed. This is necessary because it makes sense to create the light manager only when the widget is realized. Only when the widget is realized is the VTK render window created and only then are the default lights all setup correctly. """ QVTKRenderWindowInteractor.paintEvent(self, e) scene = self._scene if scene.light_manager is None: scene.light_manager = light_manager.LightManager(scene) renwin = scene._renwin renwin.update_traits() vtk_rw = tvtk.to_vtk(renwin) renwin.add_observer('StartEvent', messenger.send) messenger.connect(vtk_rw, 'StartEvent', self._start_event_callback) renwin.add_observer('EndEvent', messenger.send) messenger.connect(vtk_rw, 'EndEvent', self._end_event_callback)
def __init__(self, parent=None, **kw): # the current button self._ActiveButton = Qt.NoButton # private attributes self.__saveX = 0 self.__saveY = 0 self.__saveModifiers = Qt.NoModifier self.__saveButtons = Qt.NoButton self.__wheelDelta = 0 # do special handling of some keywords: # stereo, rw try: stereo = bool(kw['stereo']) except KeyError: stereo = False try: rw = kw['rw'] except KeyError: rw = None # create qt-level widget if QVTKRWIBase == "QWidget": QWidget.__init__(self, parent) elif QVTKRWIBase == "QGLWidget": QGLWidget.__init__(self, parent) if rw: # user-supplied render window self._RenderWindow = rw else: self._RenderWindow = vtk.vtkRenderWindow() wid = self._get_win_id() self._RenderWindow.SetWindowInfo(wid) self._should_set_parent_info = (sys.platform == 'win32') if stereo: # stereo mode self._RenderWindow.StereoCapableWindowOn() self._RenderWindow.SetStereoTypeToCrystalEyes() try: self._Iren = kw['iren'] except KeyError: self._Iren = vtk.vtkGenericRenderWindowInteractor() self._Iren.SetRenderWindow(self._RenderWindow) # do all the necessary qt setup self.setAttribute(Qt.WA_OpaquePaintEvent) self.setAttribute(Qt.WA_PaintOnScreen) self.setMouseTracking(True) # get all mouse events self.setFocusPolicy(Qt.WheelFocus) self.setSizePolicy( QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)) self._Timer = QTimer(self) self._Timer.timeout.connect(self.TimerEvent) # add wheel timer to fix scrolling issue with trackpad self.wheel_timer = None if PyQtImpl != 'PyQt5': self.wheel_timer = QTimer() self.wheel_timer.setSingleShot(True) self.wheel_timer.setInterval(25) self.wheel_timer.timeout.connect(self._emit_wheel_event) self._saved_wheel_event_info = () self._Iren.AddObserver('CreateTimerEvent', messenger.send) messenger.connect(self._Iren, 'CreateTimerEvent', self.CreateTimer) self._Iren.AddObserver('DestroyTimerEvent', messenger.send) messenger.connect(self._Iren, 'DestroyTimerEvent', self.DestroyTimer) self._RenderWindow.AddObserver('CursorChangedEvent', messenger.send) messenger.connect(self._RenderWindow, 'CursorChangedEvent', self.CursorChangedEvent) # Create a hidden child widget and connect its destroyed signal to its # parent ``Finalize`` slot. The hidden children will be destroyed # before its parent thus allowing cleanup of VTK elements. self._hidden = QWidget(self) self._hidden.hide() self._hidden.destroyed.connect(self.Finalize)
def __init__(self): self.a = A() messenger.connect(self, 'method', self.a.callback) messenger.connect(self, 'function', callback)
def _add_observer(self, obj, event, cb): """ Adds a vtk observer using messenger to avoid generating uncollectable objects. """ obj.add_observer(event, messenger.send) messenger.connect(tvtk.to_vtk(obj), event, cb)
def __init__(self, parent=None, wflags=QtCore.Qt.WindowFlags(), **kw): # the current button self._ActiveButton = QtCore.Qt.NoButton # private attributes self.__oldFocus = None self.__saveX = 0 self.__saveY = 0 self.__saveModifiers = QtCore.Qt.NoModifier self.__saveButtons = QtCore.Qt.NoButton # do special handling of some keywords: # stereo, rw stereo = 0 if kw.has_key('stereo'): if kw['stereo']: stereo = 1 rw = None if kw.has_key('rw'): rw = kw['rw'] # create qt-level widget QtGui.QWidget.__init__(self, parent, wflags | QtCore.Qt.MSWindowsOwnDC) if rw: # user-supplied render window self._RenderWindow = rw else: self._RenderWindow = vtk.vtkRenderWindow() if qt_api == 'pyqt' or sys.platform != 'win32': self._RenderWindow.SetWindowInfo(str(int(self.winId()))) else: # On Windows PySide has a bug with winID() function, so this is fix: self._RenderWindow.SetWindowInfo( str(int(pythonapi.PyCObject_AsVoidPtr(self.winId())))) self._should_set_parent_info = (sys.platform == 'win32') if stereo: # stereo mode self._RenderWindow.StereoCapableWindowOn() self._RenderWindow.SetStereoTypeToCrystalEyes() self._Iren = vtk.vtkGenericRenderWindowInteractor() self._Iren.SetRenderWindow(self._RenderWindow) # do all the necessary qt setup self.setAttribute(QtCore.Qt.WA_OpaquePaintEvent) self.setAttribute(QtCore.Qt.WA_PaintOnScreen) self.setMouseTracking(True) # get all mouse events self.setFocusPolicy(QtCore.Qt.WheelFocus) self.setSizePolicy( QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Expanding)) self._Timer = QtCore.QTimer(self) self.connect(self._Timer, QtCore.SIGNAL('timeout()'), self.TimerEvent) self._Iren.AddObserver('CreateTimerEvent', messenger.send) messenger.connect(self._Iren, 'CreateTimerEvent', self.CreateTimer) self._Iren.AddObserver('DestroyTimerEvent', messenger.send) messenger.connect(self._Iren, 'DestroyTimerEvent', self.DestroyTimer) render_window = self._Iren.GetRenderWindow() render_window.AddObserver('CursorChangedEvent', messenger.send) messenger.connect(render_window, 'CursorChangedEvent', self.CursorChangedEvent)
def __init__(self, parent=None, wflags=Qt.WindowFlags(), **kw): # the current button self._ActiveButton = Qt.NoButton # private attributes self.__oldFocus = None self.__saveX = 0 self.__saveY = 0 self.__saveModifiers = Qt.NoModifier self.__saveButtons = Qt.NoButton # do special handling of some keywords: # stereo, rw try: stereo = bool(kw['stereo']) except KeyError: stereo = False try: rw = kw['rw'] except KeyError: rw = None # create qt-level widget QWidget.__init__(self, parent, wflags|Qt.MSWindowsOwnDC) if rw: # user-supplied render window self._RenderWindow = rw else: self._RenderWindow = vtk.vtkRenderWindow() wid = self._get_win_id() self._RenderWindow.SetWindowInfo(wid) self._should_set_parent_info = (sys.platform == 'win32') if stereo: # stereo mode self._RenderWindow.StereoCapableWindowOn() self._RenderWindow.SetStereoTypeToCrystalEyes() try: self._Iren = kw['iren'] except KeyError: self._Iren = vtk.vtkGenericRenderWindowInteractor() self._Iren.SetRenderWindow(self._RenderWindow) # do all the necessary qt setup self.setAttribute(Qt.WA_OpaquePaintEvent) self.setAttribute(Qt.WA_PaintOnScreen) self.setMouseTracking(True) # get all mouse events self.setFocusPolicy(Qt.WheelFocus) self.setSizePolicy(QSizePolicy(QSizePolicy.Expanding, QSizePolicy.Expanding)) self._Timer = QTimer(self) self._Timer.timeout.connect(self.TimerEvent) # add wheel timer to fix scrolling issue with trackpad self.wheel_timer = QTimer() self.wheel_timer.setSingleShot(True) self.wheel_timer.setInterval(25) self.wheel_timer.timeout.connect(self._emit_wheel_event) self.wheel_accumulator = 0 self._saved_wheel_event_info = () self._Iren.AddObserver('CreateTimerEvent', messenger.send) messenger.connect(self._Iren, 'CreateTimerEvent', self.CreateTimer) self._Iren.AddObserver('DestroyTimerEvent', messenger.send) messenger.connect(self._Iren, 'DestroyTimerEvent', self.DestroyTimer) self._RenderWindow.AddObserver('CursorChangedEvent', messenger.send) messenger.connect(self._RenderWindow, 'CursorChangedEvent', self.CursorChangedEvent) # Create a hidden child widget and connect its destroyed signal to its # parent ``Finalize`` slot. The hidden children will be destroyed # before its parent thus allowing cleanup of VTK elements. self._hidden = QWidget(self) self._hidden.hide() self._hidden.destroyed.connect(self.Finalize)
def __init__(self, parent=None, wflags=QtCore.Qt.WindowFlags(), **kw): # the current button self._ActiveButton = QtCore.Qt.NoButton # private attributes self.__oldFocus = None self.__saveX = 0 self.__saveY = 0 self.__saveModifiers = QtCore.Qt.NoModifier self.__saveButtons = QtCore.Qt.NoButton # do special handling of some keywords: # stereo, rw stereo = 0 if kw.has_key('stereo'): if kw['stereo']: stereo = 1 rw = None if kw.has_key('rw'): rw = kw['rw'] # create qt-level widget QtGui.QWidget.__init__(self, parent, wflags|QtCore.Qt.MSWindowsOwnDC) if rw: # user-supplied render window self._RenderWindow = rw else: self._RenderWindow = vtk.vtkRenderWindow() if qt_api == 'pyqt' or sys.platform != 'win32': self._RenderWindow.SetWindowInfo(str(int(self.winId()))) else: # On Windows PySide has a bug with winID() function, so this is fix: self._RenderWindow.SetWindowInfo( str(int(pythonapi.PyCObject_AsVoidPtr(self.winId())))) self._should_set_parent_info = (sys.platform == 'win32') if stereo: # stereo mode self._RenderWindow.StereoCapableWindowOn() self._RenderWindow.SetStereoTypeToCrystalEyes() self._Iren = vtk.vtkGenericRenderWindowInteractor() self._Iren.SetRenderWindow(self._RenderWindow) # do all the necessary qt setup self.setAttribute(QtCore.Qt.WA_OpaquePaintEvent) self.setAttribute(QtCore.Qt.WA_PaintOnScreen) self.setMouseTracking(True) # get all mouse events self.setFocusPolicy(QtCore.Qt.WheelFocus) self.setSizePolicy(QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Expanding)) self._Timer = QtCore.QTimer(self) self.connect(self._Timer, QtCore.SIGNAL('timeout()'), self.TimerEvent) self._Iren.AddObserver('CreateTimerEvent', messenger.send) messenger.connect(self._Iren, 'CreateTimerEvent', self.CreateTimer) self._Iren.AddObserver('DestroyTimerEvent', messenger.send) messenger.connect(self._Iren, 'DestroyTimerEvent', self.DestroyTimer) render_window = self._Iren.GetRenderWindow() render_window.AddObserver('CursorChangedEvent', messenger.send) messenger.connect(render_window, 'CursorChangedEvent', self.CursorChangedEvent)