Séparer les QWidget du QMainWindow ?

Version imprimable

Hello,

Avec les codes ci-dessous, j'ai bien une fenêtre qui s'ouvre, mais rien ne s'affiche. Savez-vous pourquoi?

app.py

Code:

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#!/usr/bin/env python
import sys
 
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QApplication, QWidget, QMainWindow, QGridLayout
 
from views import Main
 
class TerraSoft(QMainWindow):
    def __init__(self, parent=None):
        super(TerraSoft, self).__init__(parent)
        self.setWindowTitle('TerraSoft')
        self.setWindowState(Qt.WindowMaximized)
 
        # load ihm
        self.main = Main(self)
        # Place ihm
        self._widget = QWidget()
        self._layout = QGridLayout(self._widget)
        self._layout.addWidget(self.main)
        self.setCentralWidget(self._widget)
 
if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = TerraSoft()
    ex.show()
    sys.exit(app.exec_())

views.py

Code:

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import sys
 
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QIcon
from PyQt5.QtWidgets import QApplication, QWidget, qApp, QAction, QSplitter, QMenuBar, QToolBar, QGridLayout, QStatusBar
 
from Family.views import FamilyTreeView
from Specie.views import EventsTableView
 
class Main(QWidget):
    """description of class"""
    def __init__(self, parent):
        super(Main, self).__init__(parent)
 
        # init menu
        menubar = QMenuBar()
        fileMenu = menubar.addMenu('File')
 
        #init toolbar
        exitAct = QAction(QIcon('exit24.png'), 'Exit', self)
        exitAct.setShortcut('Ctrl+Q')
        exitAct.triggered.connect(qApp.quit)
 
        toolbar = QToolBar()
 
        # init elements of widget
        familyTreeView = FamilyTreeView(self)
        eventsTableView = EventsTableView(self)
 
        #init splitters
        HSplitter = QSplitter(Qt.Horizontal)
        VSplitter = QSplitter(Qt.Vertical)
 
        # add elements to splitters
        HSplitter.addWidget(familyTreeView)
        HSplitter.addWidget(eventsTableView)
 
 
        grid = QGridLayout()
        grid.addWidget(HSplitter)
 
        #status bar
        statusBar = QStatusBar().showMessage('Bienvenue dans TerraSoft')

module: family/views.py

Code:

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import sys
 
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QStandardItemModel, QStandardItem
from PyQt5.QtWidgets import QApplication, QWidget, QTreeView
 
families = [
    ("Craspedocephalus", [
        ("puniceus", []),
        ("trigonocephalus", [])
    ]),
    ("Trimeresurus", [
        ("albolabris", [])
    ]),
    ("Elapidé", [])
]
 
class FamilyTreeView(QWidget):
    """description of class"""
    def __init__(self, parent):
        super(FamilyTreeView, self).__init__(parent)
 
        self.familyList = QTreeView()
        self.familyList.setMaximumWidth(300)
 
        self.model = QStandardItemModel()
        self.addItems(self.model, families)
        self.familyList.setModel(self.model)
 
        self.model.setHorizontalHeaderLabels([self.tr("Familles")])
 
    def addItems(self, parent, elements):     
        for text, children in elements:
            item = QStandardItem(text)
            parent.appendRow(item)
            if children:
                self.addItems(item, children)

module: Specie/views.py

Code:

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import sys
 
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QStandardItemModel, QStandardItem
from PyQt5.QtWidgets import QApplication, QWidget, QTableWidget, QTreeView
 
class EventsTableView(QWidget):
    """description of class"""
    def __init__(self, parent):
        super(EventsTableView, self).__init__(parent)
 
        self.eventsTable = QTableWidget()
        self.eventsTable.setColumnCount(3)
        self.eventsTable.setHorizontalHeaderLabels(('Date', 'Catégorie', 'Description'))

Je n'ai pas d'erreur en soit.

Par avance, merci :)

01/11/2017, 10h54
VinsS
Salut,
Code:

1 2 3 grid = QGridLayout() grid.addWidget(HSplitter)
Si ce QGridLayout reste sans parent, ça ne pourra jamais marcher.

Je pense que tu auras le même problème avec les QTreeView et QTableView des autres fichiers, ils semblent orphelins eux aussi.

Je te recommande d'utiliser le Designer pour voir comment on dispose les objets. Après, si tu veux séparer tes widgets, tu pourras toujours le faire.

Ah oui, seule une QMainWindow peut avoir une QMenuBar et une QStatusBar, pas un widget.

Salut,

merci de ta réponse.

J'ai apporté quelques modifications depuis (mais sans différence visuelle), voici mes nouveaux fichiers:

app.py

Code:

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#!/usr/bin/env python
import sys
 
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QIcon
from PyQt5.QtWidgets import QApplication, qApp, QWidget, QMainWindow, QGridLayout, QMenuBar, QAction, QToolBar, QStatusBar
 
from views import Main
 
class TerraSoft(QMainWindow):
    def __init__(self):
        QMainWindow.__init__(self)
        self.setWindowTitle('TerraSoft')
        self.setWindowState(Qt.WindowMaximized)
 
        # init menu
        menubar = QMenuBar()
        fileMenu = menubar.addMenu('File')
 
        #init toolbar
        exitAct = QAction(QIcon('exit24.png'), 'Exit', self)
        exitAct.setShortcut('Ctrl+Q')
        exitAct.triggered.connect(qApp.quit)
 
        toolbar = QToolBar()
 
        # load ihm
        main = Main()
        centWidget = QWidget()
 
        # widget centralizer
        window = QGridLayout()
        window.addWidget(main, 0, 0)
        centWidget.setLayout(window)
 
        self.setCentralWidget(centWidget)
 
        #status bar
        statusBar = QStatusBar().showMessage('Bienvenue dans TerraSoft')
 
        # show ihm
        self.show()
        main.show()
 
if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = TerraSoft()
    ex.show()
    sys.exit(app.exec_())

views.py

Code:

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import sys
 
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QIcon
from PyQt5.QtWidgets import QApplication, QWidget, qApp, QAction, QSplitter, QMenuBar, QToolBar, QGridLayout, QStatusBar
 
from Family.views import FamilyTreeView
from Specie.views import EventsTableView
 
class Main(QWidget):
    """description of class"""
    def __init__(self, *args):
        QWidget.__init__(self, *args)
 
        # init elements of widget
        familyTreeView = FamilyTreeView(self)
        eventsTableView = EventsTableView(self)
 
        #init splitters
        HSplitter = QSplitter(Qt.Horizontal)
        VSplitter = QSplitter(Qt.Vertical)
 
        # add elements to splitters
        HSplitter.addWidget(familyTreeView)
        HSplitter.addWidget(eventsTableView)
 
 
        grid = QGridLayout()
        grid.addWidget(HSplitter)

Family/views.py

Code:

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import sys
 
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QStandardItemModel, QStandardItem
from PyQt5.QtWidgets import QApplication, QWidget, QTreeView
 
families = [
    ("Craspedocephalus", [
        ("puniceus", []),
        ("trigonocephalus", [])
    ]),
    ("Trimeresurus", [
        ("albolabris", [])
    ]),
    ("Elapidé", [])
]
 
class FamilyTreeView(QWidget):
    """description of class"""
    def __init__(self, *args):
        QWidget.__init__(self, *args)
 
        self.familyList = QTreeView()
        self.familyList.setMaximumWidth(300)
 
        self.model = QStandardItemModel()
        self.addItems(self.model, families)
        self.familyList.setModel(self.model)
 
        self.model.setHorizontalHeaderLabels([self.tr("Familles")])
 
    def addItems(self, parent, elements):     
        for text, children in elements:
            item = QStandardItem(text)
            parent.appendRow(item)
            if children:
                self.addItems(item, children)

specie/views.py

Code:

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import sys
 
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QStandardItemModel, QStandardItem
from PyQt5.QtWidgets import QApplication, QWidget, QTableWidget, QTreeView
 
class EventsTableView(QTableWidget):
    """description of class"""
    def __init__(self, *args):
        QTableWidget.__init__(self, *args)
 
        self.eventsTable = QTableWidget()
        self.eventsTable.setColumnCount(3)
        self.eventsTable.setHorizontalHeaderLabels(('Date', 'Catégorie', 'Description'))

À ce stade, je ne vois vraiment pas ce que je fais de faux ^^

Il manque toujours beaucoup de choses.

Quelque chose comme ceci sera plus fonctionnel:

Code:

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from PyQt5.QtCore import Qt
from PyQt5.QtGui import QIcon
from PyQt5.QtWidgets import (QApplication, qApp, QWidget, QMainWindow, 
                             QGridLayout, QMenuBar, QAction, QToolBar, 
                             QStatusBar)
 
from views import Main
 
class TerraSoft(QMainWindow):
    def __init__(self):
        QMainWindow.__init__(self)
        self.setWindowTitle('TerraSoft')
        self.setWindowState(Qt.WindowMaximized)
        centWidget = QWidget()
        self.main = Main(self)
        window = QGridLayout(centWidget)
        window.addWidget(self.main, 0, 0)
        self.setCentralWidget(centWidget)
 
        self.menubar = QMenuBar()
        self.fileMenu = menubar.addMenu('File')
        exitAct = QAction(QIcon('exit24.png'), 'Exit', self)
        exitAct.setShortcut('Ctrl+Q')
        exitAct.triggered.connect(qApp.quit)
        self.fileMenu.addAction(exitAct)
        self.setMenuBar(self.menubar)
 
        self.toolbar = QToolBar()
        self.setToolBar(self.toolbar)
 
        self.statusBar = QStatusBar()
        self.setStatusBar(self.statusBar)
        self.statusBar.showMessage('Bienvenue dans TerraSoft')
 
        self.show()
 
if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = TerraSoft()
    ex.show()
    sys.exit(app.exec_())

Il faut absolument garder référence des widgets auquel tu devras accéder plus tard, le QTreeView et leQTableView par exemple.