it is pyvista compatible with pyside2? about pyvista-support

[ezalorpro]

Hello, thanks for the quick answer, indeed it is possible, i figure it out like 20 minuts ago, i am currently expertimenting, but in breef it is just like you said, just replace PyQt5 import for PySide2 and replace pyqtsignal and pyqtslot for Signal and Slot.

My only problem it is with the scalars and cmap, you can see in the imagen that dont correspond with the height, but that's another topic. i have intendet to release the code eventually, but i cant do it right now, since it is a work for university stuff.

btw, after making those changes, the basic example of PyVista + PyQt5 works with pyside2 changing Qt for QtWidgets.

from PySide2 import QtWidgets
import numpy as np
import pyvista as pv

class MainWindow(QtWidgets.QMainWindow):

    def __init__(self, parent=None, show=True):
        super(MainWindow, self).__init__(parent)

        # create the frame
        self.frame = QtWidgets.QFrame()
        vlayout = QtWidgets.QVBoxLayout()

        # add the pyvista interactor object
        self.vtk_widget = pv.QtInteractor(self.frame)
        vlayout.addWidget(self.vtk_widget)

        self.frame.setLayout(vlayout)
        self.setCentralWidget(self.frame)

        # simple menu to demo functions
        mainMenu = self.menuBar()
        fileMenu = mainMenu.addMenu('File')
        exitButton = QtWidgets.QAction('Exit', self)
        exitButton.setShortcut('Ctrl+Q')
        exitButton.triggered.connect(self.close)
        fileMenu.addAction(exitButton)

        # allow adding a sphere
        meshMenu = mainMenu.addMenu('Mesh')
        self.add_sphere_action = QtWidgets.QAction('Add Sphere', self)
        self.add_sphere_action.triggered.connect(self.add_sphere)
        meshMenu.addAction(self.add_sphere_action)

        if show:
            self.show()

    def add_sphere(self):
        """ add a sphere to the pyqt frame """
        sphere = pv.Sphere()
        self.vtk_widget.add_mesh(sphere)
        self.vtk_widget.reset_camera()

[banesullivan]

Yes, it is possible to embed a PyVista render window in a pyside2 app! This requires a bit of hacking but we could likely get a branch going in the main repo for this. I think simply replacing PyQt5 imports with PySide2 will do the trick

Are you familiar with PyVista’s BackgroundPlotter class and the internalQtInteractorclass it inherits?

https://github.com/pyvista/pyvista/blob/66e9495273adb0ca4fc5441e913d239837543140/pyvista/plotting/qt_plotting.py#L270

You’d likely need to inherit the QtInteractor class and embed that after replacing the PyQt5 imports for PySide2

Is this GUI app you’re making open source? If so maybe we could collaborate and get a general template for embedding pyvista in PySide2 apps...

_{Sent with GitHawk}

[banesullivan]

Excellent work! I'm glad you were able to figure out how to get this working so quickly!

It'd be nice if we could set up PyVista to work with both. PyQt5 and PySide2 - I'll think about how we could make this work

My only problem it is with the scalars and cmap, you can see in the imagen that don't correspond with the height, but that's another topic.

Feel free to open another issue if you need help with this

[ezalorpro]

It'd be nice if we could set up PyVista to work with both. PyQt5 and PySide2 - I'll think about how we could make this work

about that, perhaps you can find inspiration in the Qt.py file of pyqtgraph, it deals with the same problem, kinda.

https://github.com/pyqtgraph/pyqtgraph/blob/develop/pyqtgraph/Qt.py

[banesullivan]

Nice find, thanks for sharing!

[banesullivan]

@ezalorpro - I actually cannot get the script you shared above to work... Am I missing something?:

from PySide2 import QtWidgets
import numpy as np
import pyvista as pv
import sys

class MainWindow(QtWidgets.QMainWindow):

    def __init__(self, parent=None, show=True):
        super(MainWindow, self).__init__(parent)

        # create the frame
        self.frame = QtWidgets.QFrame()
        vlayout = QtWidgets.QVBoxLayout()

        # add the pyvista interactor object
        self.vtk_widget = pv.QtInteractor(self.frame)
        vlayout.addWidget(self.vtk_widget)

        self.frame.setLayout(vlayout)
        self.setCentralWidget(self.frame)

        # simple menu to demo functions
        mainMenu = self.menuBar()
        fileMenu = mainMenu.addMenu('File')
        exitButton = QtWidgets.QAction('Exit', self)
        exitButton.setShortcut('Ctrl+Q')
        exitButton.triggered.connect(self.close)
        fileMenu.addAction(exitButton)

        # allow adding a sphere
        meshMenu = mainMenu.addMenu('Mesh')
        self.add_sphere_action = QtWidgets.QAction('Add Sphere', self)
        self.add_sphere_action.triggered.connect(self.add_sphere)
        meshMenu.addAction(self.add_sphere_action)

        if show:
            self.show()

    def add_sphere(self):
        """ add a sphere to the pyqt frame """
        sphere = pv.Sphere()
        self.vtk_widget.add_mesh(sphere)
        self.vtk_widget.reset_camera()


if __name__ == '__main__':
    app = QtWidgets.QApplication(sys.argv)
    window = MainWindow()
    sys.exit(app.exec_())

Then I get the error:

Traceback (most recent call last):
  File "test.py", line 48, in <module>
    window = MainWindow()
  File "test.py", line 16, in __init__
    self.vtk_widget = pv.QtInteractor(self.frame)
  File "/Users/bane/Documents/OpenGeoVis/Software/pyvista/pyvista/plotting/qt_plotting.py", line 290, in __init__
    QVTKRenderWindowInteractor.__init__(self, parent)
  File "/Users/bane/anaconda3/envs/fras/lib/python3.7/site-packages/vtk/qt/QVTKRenderWindowInteractor.py", line 235, in __init__
    QGLWidget.__init__(self, parent)
TypeError: arguments did not match any overloaded call:
  QGLWidget(parent: QWidget = None, shareWidget: QGLWidget = None, flags: Union[Qt.WindowFlags, Qt.WindowType] = Qt.WindowFlags()): argument 1 has unexpected type 'PySide2.QtWidgets.QFrame'
  QGLWidget(QGLContext, parent: QWidget = None, shareWidget: QGLWidget = None, flags: Union[Qt.WindowFlags, Qt.WindowType] = Qt.WindowFlags()): argument 1 has unexpected type 'PySide2.QtWidgets.QFrame'
  QGLWidget(QGLFormat, parent: QWidget = None, shareWidget: QGLWidget = None, flags: Union[Qt.WindowFlags, Qt.WindowType] = Qt.WindowFlags()): argument 1 has unexpected type 'PySide2.QtWidgets.QFrame'
Exception ignored in: <function BasePlotter.__del__ at 0x7fcd604de620>
Traceback (most recent call last):
  File "/Users/bane/Documents/OpenGeoVis/Software/pyvista/pyvista/plotting/plotting.py", line 3375, in __del__
    self.close()
RuntimeError: super-class __init__() of type QtInteractor was never called

[banesullivan]

I have version 5.13.0 of PyQt5 and version 5.13.0 of PySide2

[ezalorpro]

i am using:

python -> 3.7.3 - 32 bits
pyvista -> 0.21.4
PySide2 -> 5.13.0
VTK -> 8.2.0

No PyQt5 since it is a virtual enviroment, the only thing worth mentioning is that the line 235 of my QVTKRenderWindowInteractor.py is not that one the show the error, so maybe it is the VTK version?

I try the replace PySide2 thing cuz i read this in the QVTKRenderWindowInteractor.py :

Changes by Tobias Hänel, Sep. 2018
Support for PySide2

[banesullivan]

Ah yep - I had VTK 8.1.2 in that virtual env. VTK 8.2.0 resolves the issue