[vtkusers] QVTKWidget is flickering

[José M. Rodriguez Bacallao]

by the way, this need to be done in the parent of QVTKWidget? it's not
possible to do it in QVTKWidget?

On 6/4/12, José M. Rodriguez Bacallao <jmrbcu at gmail.com> wrote:
> thanks very much, it work like a charm!!!
>
> On Mon, Jun 4, 2012 at 3:05 PM, Clinton Stimpson <clinton at elemtech.com>
> wrote:
>>
>> The flicker comes from converting the parent widget of QVTKWidget (in
>> this
>> case, your view manager) from an alien widget to a native one.
>>
>> In your Workspace.__init__, you can call
>> self.view_manager.setAttribute(QtCore.Qt.WA_NativeWindow)
>> so its a native window from the start.
>>
>> Clint
>>
>> On Monday, June 04, 2012 01:17:37 PM José M. Rodriguez Bacallao wrote:
>>> I am using Archlinux, 64 and 32 bits, and using vtk 5.10.
>>> I also tried setting self.view_manager.setUpdatesEnabled(False/True)
>>> but nothing happens
>>>
>>> On Mon, Jun 4, 2012 at 1:04 PM, Clinton Stimpson <clinton at elemtech.com>
>> wrote:
>>> > 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!!!.
>>> >> _______________________________________________
>>> >> Powered by www.kitware.com
>>> >>
>>> >> Visit other Kitware open-source projects at
>>> >> http://www.kitware.com/opensource/opensource.html
>>> >>
>>> >> Please keep messages on-topic and check the VTK FAQ at:
>>> >> http://www.vtk.org/Wiki/VTK_FAQ
>>> >>
>>> >> Follow this link to subscribe/unsubscribe:
>>> >> http://www.vtk.org/mailman/listinfo/vtkusers
>>> >
>>> > --
>>> > Clinton Stimpson
>>> > Elemental Technologies, Inc
>>> > Computational Simulation Software, LLC
>>> > www.csimsoft.com
>>>
>>> _______________________________________________
>>> Powered by www.kitware.com
>>>
>>> Visit other Kitware open-source projects at
>>> http://www.kitware.com/opensource/opensource.html
>>>
>>> Please keep messages on-topic and check the VTK FAQ at:
>>> http://www.vtk.org/Wiki/VTK_FAQ
>>>
>>> Follow this link to subscribe/unsubscribe:
>>> http://www.vtk.org/mailman/listinfo/vtkusers
>> --
>> Clinton Stimpson
>> Elemental Technologies, Inc
>> Computational Simulation Software, LLC
>> www.csimsoft.com
>