[vtkusers] QVTKWidget is flickering

[Clinton Stimpson]

Which platform... VTK version ?

On Monday, June 04, 2012 12:55:34 PM José M. Rodriguez Bacallao wrote:
> hi folks, as I posted previously, I am trying to use QVTKWidget with
> QStackedWidget, I have two QStackedWidget nested one inside the other.
> For examples, I have a QMainWindow and as central widget is a
> QStackWidget that manage what I call "applications". An application is
> a simple QWidget, and, in my case, is a QWidget with a QStackWidget
> inside it that manage QVTKWidget's (image viewers). The problem arise
> when I add a QVTKWidget to the internal QStackedWidget, it show ok
> but, has an annoying flickering and I canot allow this in a medical
> application, here I post an example code to demostrate what I mean:
> 
> 
> from PyQt4 import QtGui, QtCore
> import images, vtk
> 
> 
> class Workspace(QtGui.QMainWindow):
> 
>     def __init__(self, parent=None):
>         super(Workspace, self).__init__(parent)
> 
>         self.main_tb = self.addToolBar('main')
>         self.add_action = self.main_tb.addAction('Add viewer')
>         self.add_action.triggered.connect(self.add_viewer)
> 
>         self.app_manager = QtGui.QStackedWidget(self)
>         self.app_manager.setStyleSheet('background: red;')
>         self.setCentralWidget(self.app_manager)
> 
>         self.workspace_app = QtGui.QWidget(self.app_manager)
>         self.view_manager = QtGui.QStackedWidget(self.workspace_app)
>         self.view_manager.setStyleSheet('background: blue;')
>         self.workspace_app_layout = QtGui.QHBoxLayout(self.workspace_app)
>         self.workspace_app_layout.addWidget(self.view_manager)
> 
>         self.app_manager.addWidget(self.workspace_app)
>         self.app_manager.setCurrentWidget(self.workspace_app)
> 
>     def add_viewer(self):
>         viewer = vtk.QVTKWidget(self)
>         self.renderer = vtk.vtkRenderer()
>         self.renderer.SetBackground(0, 0, 0)
>         viewer.GetRenderWindow().AddRenderer(self.renderer)
>         self.view_manager.addWidget(viewer)
>         self.view_manager.setCurrentWidget(viewer)
> 
> 
> if __name__ == '__main__':
>     app = QtGui.QApplication([])
>     w = Workspace()
>     w.showFullScreen()
>     app.exec_()
> 
> any ideas please, I need to solve this issue as quickly as possible
> because of my deadline!!!.
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-- 
Clinton Stimpson
Elemental Technologies, Inc
Computational Simulation Software, LLC
www.csimsoft.com