Cura plugins + beginner Python + out dated QT= ishhh!

Fleuve

Hello,
I'm face a little problem and before we start, I'm a Assembler/C++/DirectX programmer. Python was really not my cup of tea, but don't worry about technical. The problem come went a decide to buy a FDM printer and after installing Cura, I realize that plugins was supported by the program. Then after 2 hours, I have a sort of plugins. But this one crash in a lot of circumstance. Now, What I've done.

I've already contact Ultimaker forum and Cura Working on python 3.10.4.
Also Cura use PyQt 6.6. I use Pip Install to setup QT.

pip install PyQt6-Qt6==6.6.0
pip install PyQt6-WebEngine-Qt6==6.6.0
pip install PyQt6_sip==13.6.0
pip install PyQt6==6.6.0
pip install PyQt6-WebEngine==6.6.0

Now before integrate everything into the plugins, I've made a little demo version with Python IDLE.

import sys
from PyQt6.QtWidgets import QApplication
from PyQt6.QtCore import QUrl
from PyQt6.QtWebEngineWidgets import QWebEngineView

if __name__ == "__main__":
    app = QApplication(sys.argv)
    web_view = QWebEngineView()
    web_view.load(QUrl("http://192.168.1.69"))
    web_view.show()
    sys.exit(app.exec())

For the moment, this version work. but I can't make work into the plugins. And it's understandable, because plugins connect cura interface thru a instance.
CURA PLUGINS

class FluiddStage(CuraStage):
    """Stage for web Interface"""

    def __init__(self, parent = None):
        super().__init__(parent)
        Application.getInstance().engineCreatedSignal.connect(self._engineCreated)

    def _engineCreated(self):
        self.addDisplayComponent("menu", os.path.join(PluginRegistry.getInstance().getPluginPath("FluiddStage"), "FluiddMenu.qml"))
        self.addDisplayComponent("main", os.path.join(PluginRegistry.getInstance().getPluginPath("FluiddStage"), "FluiddMain.qml"))

Now it's here I crash... I can't create a qml version.
WebInterface.Py

from PyQt6.QtGui import QGuiApplication
from PyQt6.QtQml import QQmlApplicationEngine
from PyQt6.QtWebEngineWidgets import QWebEngineView

if __name__ == "__main__":
    app = QGuiApplication(sys.argv)
    engine = QQmlApplicationEngine()
    engine.quit.connect(app.quit)
    engine.load('WebInterfaceMain.qml')
    sys.exit(app.exec())

WebInterfaceMain.qml

import QtQuick 2.15
import QtQuick.Controls 2.15

ApplicationWindow {
    visible: true
    width: 600
    height: 500
    title: "HelloApp"

    Text {
        anchors.centerIn: parent
        text: "Hello World"
        font.pixelSize: 24
    }
}

I try, and try and try... to insert WebEngineView into QML file nothing work... with different import to. Have you idea.... I need something like

WebView {
        id: webView
        anchors.fill: parent
        url: "http://192.168.1.69"
    }

thanks.

SGaist

Hi and welcome to devnet,

Can you share the crash stack trace ?
Your skills hint to Windows but which OS are you using ?

Fleuve

@SGaist

Thanks for the reply. I forgot how qt was multi-platform/multi-os. But yeah you have right, I'm running on Windows 10. Now for the crash, it's pretty funny actually. After I've move qt/bin dll into Cura root folder and some Pyd/Pyi... I didn't remember which one, i've to create a kind of cura patch file for.. but anyway.... To say after i've modified cura, i've the same bug into PythonDemo and CuraPlugins.

import os.path
from UM.Application import Application
from UM.PluginRegistry import PluginRegistry
from cura.Stages.CuraStage import CuraStage

from PyQt6.QtCore import QUrl
#from PyQt6.QtWebEngineWidgets import QWebEngineView
	
class FluiddStage(CuraStage):
    """Stage for web Interface"""
    #view = QWebEngineView()
  
    def __init__(self, parent = None):
        super().__init__(parent)
        Application.getInstance().engineCreatedSignal.connect(self._engineCreated)
	
    def _engineCreated(self):
        self.addDisplayComponent("menu", os.path.join(PluginRegistry.getInstance().getPluginPath("FluiddStage"), "FluiddMenu.qml"))
        self.addDisplayComponent("main", os.path.join(PluginRegistry.getInstance().getPluginPath("FluiddStage"), "FluiddMain.qml"))

My first plugins crash was that I cannot import QWebEngineView and I cannot create QWebEngineView() class instance. Now with cura file patch, I can. Of course I cannot use view.show() it's crash the plugins.

The second plugins crash was about QML file. I cannot import nothing, except maybe QtQuick/UM/Cura. And it's where is funny... I seem to have the same problem with my QML demo version since i try to QML the demo. I Cannot import QtWebEngine/QtWebView or whatever into QML file. it's crash demo and plugins.

Does I miss something into init.py? Remark demo folder doesn't have.