I have a mainwindow containing many dockwidget, toolbars,and menubars. I am able to toggle the visibility of dockwidgets and toolbars but not the menubars. Why does not the below code work?
Is it possible to view only the central widget of a QMainWindow as full screen in PyQt by hiding the menubars?
class MainWindow(QMainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.local_grview = QGraphicsView()
self.local_grview.setSceneRect(0,0,200,200)
self.setCentralWidget(self.local_grview)
def fullscreen(self):
self.hide()
self.setParent(None)
self.local_grview.showFullScreen()
self.local_grview.show()
Related
I am learning PyQt5 recently and have problems when I want to delete a widget in QScrollArea. Is there an elegant way to visit the element in QScrollArea and delete it when the "delete" button in that element is clicked? Thank you for any help!
class MyWidget(QWidget):
def __init__(self, id):
super().__init__()
self.layout = QHBoxLayout()
self.layout.addWidget(QPlainTextEdit(id))
self.layout.addWidget(QPushButton('Delete'))
self.setLayout(self.layout)
# connect options
connect_options()
def connect_options(self):
pass
class MyList(QScrollArea):
def __init__(self):
super().__init__()
self.layout = QVBoxLayout()
self.widget = QWidget()
for x in range(10):
self.layout.addWidget(MyWidget(str(x)))
self.widget.setLayout(self.layout)
self.setMinimumSize(1024, 500)
self.setWidget(self.widget)
First I would suggest you look into QListWidget, It will provide you various functions to handle situations like this.
for your problem, you will need to delete the widget from its parent layout & then delete it from the GUI
class MyWidget(QWidget):
def __init__(self, id):
super().__init__()
self.layout = QHBoxLayout()
self.layout.addWidget(QPlainTextEdit(id))
del_btn = QPushButton('Delete')
del_btn.clicked.connect(self._delete) # connect the click event to your delete function
self.layout.addWidget(del_btn)
self.setLayout(self.layout)
# connect options
self.connect_options()
def connect_options(self):
pass
def _delete(self):
# here you will delete your widget
parent_layout = self.parent().layout()
parent_layout.removeWidget(self) # remove the widget from its parent layout
self.deleteLater() # lets Qt knows it needs to delete this widget from the GUI
del self
When I load a dialog (QMainWindow) window from within my mainwindow (QMainWindow), it loads without layout, even though the setupUi() function is called.
The important pieces of code are here below, click here for pastebin link to full code
class Ui_Dialog(QMainWindow):
def __init__(self, parent=None):
super(Ui_Dialog, self).__init__(parent)
self.setupUi(self)
def setupUi(self, Dialog):
...
class MainWindow(QMainWindow):
def __init__(self):
super(MainWindow, self).__init__()
self.setupUi(self)
self.show()
....
def setupUi(self, Form):
...
self.auto_sap_btn = QPushButton(Form)
self.auto_sap_btn.setGeometry(QRect(0, 0, 61, 25))
self.auto_sap_btn.setObjectName('auto_sap_btn')
self.auto_sap_btn.clicked.connect(self.openDialog)
def openDialog(self):
self.window = Ui_Dialog(self)
self.window.setupUi(self.window)
self.window.move(600, 500)
self.window.show()
Right now my dialog looks like this:
Failed dialog layout
When I load the dialog on its own from its own script created by:
pyuic5 -x dialog.ui -o dialog.py
it looks like this:
Proper dialog layout
What am I missing?
When you create a design based on a Template in Qt Designer, then when you have to pass the appropriate widget, when you created Ui_Dialog you surely used Dialog with Buttons Right so in this case you should use a QDialog instead of QMainWindow:
class Ui_Dialog(QDialog): # change QMainWindow to QDialog
def __init__(self, parent=None):
super(Ui_Dialog, self).__init__(parent)
self.setupUi(self)
[...]
Another mistake is to use the setupUi() method a second time since this method is responsible for filling in the widget, by calling it 2 times you will be adding more widgets unnecessarily:
def openDialog(self):
self.window = Ui_Dialog(self)
self.window.move(600, 500)
self.window.show()
Hello I'm trying to embbed a qtableview in a qvbox layout
But I do not manage to keep the qtableview in the qvboxlayout
The code below gives me two windows I do not know why layout.addwidget does not behave as expected.
class QMT(QtGui.QMainWindow):
def __init__(self, parent=None):
super(QMT, self).__init__(parent)
layout=QVBoxLayout(self)
self.view = QtGui.QTableView()
self.name = QtGui.QLabel("Name:")
layout.addWidget(self.view)
layout.addWidget(self.name)
self.initUI() #Windows stuff + show()
self.setLayout(layout)
I answer myself and found basic statement I did not understand about PyQt:
There are 2 steps to using the layout system in Qt: organizing widgets into a layout, and applying a layout to a widget.
So here is something that work :
class QMT(QtGui.QMainWindow):
def __init__(self, parent=None):
super(QMT, self).__init__(parent)
# Create Qtable view widget
self.view = QtGui.QTableView(self)
# Create Canvas for graph
self.fig=Figure(figsize=(5,5), dpi=100)
self.canvas=FigureCanvas(self.fig)
self.graph=self.fig.add_subplot(111)
#Layout management
#Initiate splitter (more convenient for end user)
splitter1 = QtGui.QSplitter(QtCore.Qt.Horizontal)
splitter1.addWidget(self.view)
splitter1.addWidget(self.canvas)
# Create Horizontal Layout Box
hbox = QtGui.QHBoxLayout()
# Add the splitter to the hbox
hbox.addWidget(splitter1)
#initiate widget to be shown
widget = QtGui.QWidget(self)
widget.setLayout(hbox)
#Set widget as central widget
self.setCentralWidget(widget)
# Windows & Menu stuff
self.initUI()
I have a simple example of of a dialog window that has the keyPressEvent method. However, no matter what is typed when the sub window has focus, the event is not triggered.
import sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *
import PyQt4.Qt
class KpeWindow(QDialog):
def __init__(self, parent=None):
super().__init__(parent)
main = QVBoxLayout(self)
label = QLabel(self)
label.setText('Test the keyPressEvent')
self.adjustSize()
self.setLayout(main)
def keyPressEvent(self, event):
QMessageBox.warning(self, 'MDI', 'keyPressEvent')
super().keyPressEvent(event)
class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
self.setWindowTitle('KeyPressEvent Test')
child = KpeWindow()
self.setCentralWidget(child)
if __name__ == '__main__':
app = QApplication(sys.argv)
mainWin = MainWindow()
mainWin.show()
sys.exit(app.exec_())
The following code works:
class KpeWindow(QWidget):
def __init__(self, parent=None):
QWidget.__init__(self,parent)
main = QVBoxLayout(self)
label = QLabel(self)
label.setText('Test the keyPressEvent')
main.addWidget(label)
self.adjustSize()
self.setLayout(main)
def keyPressEvent(self, event):
QMessageBox.warning(self, 'MDI', 'keyPressEvent')
self.parent().keyPressEvent(event)
class MainWindow(QMainWindow):
def __init__(self):
QMainWindow.__init__(self)
self.setWindowTitle('KeyPressEvent Test')
main = QVBoxLayout(self)
child = KpeWindow(self)
child.setFocusPolicy(Qt.StrongFocus)
self.setFocusProxy(child)
main.addWidget(child)
child.setFocus(True)
self.adjustSize()
self.setLayout(main)
I am not sure which of my changes work, I suspect setFocusProxy. In general I would recommend using QWidget as the child, and putting things into layouts even when there are no siblings.
The keyPressEvent is sensitive to the focus policy. In your example, the event is going to the QMainWindow (if you move the keyPressEvent to there, it does receive key events).
Is there any reason to have a dialog within a window? If you launch the dialog in the usual way, using child.show(), child.exec_() instead of setCentralWidget, it shows in a separate window and captures the key event.
This fairly minimal code creates a systray item with three right click options. One is an instance of QDialog, another QMainWindow, and also Quit. It's for a systray-driven app that will have some qdialogs and also a qmainwindow containing a table widget (or, is it possible to create a table into a qdialog?). I've been stuck on this for a week or so, read a lot of related materials and do not understand how to resolve it.
From the systray icon menu, clicking on QDialog, the dialog opens, waits for user action, and clicking the Ok or Cancel buttons will print which one was clicked. It would seem this works because QDialog has its own exec_(). Great so far.
However, clicking on the QMainWindow menu option, the main window dialog appears briefly and disappears with no chance for user input, of course. Maybe instead, the qmainwindow dialog would need to rely on the QApplication's exec_() where the object would instead be initialized just before app.exec_() perhaps? If that would work, I'm not clear on how def qmainwindow() would retrieve the information back from the user.
Hopefully a simple matter for someone who knows, a few changes, bingo.
Current environment: Windows 7 or XP, Python 2.7, Pyside
If you run this, there will be a blank place-holder in the systray that is clickable (right click), or you can also give it an actual image in place of 'sample.png'.
#!python
from PySide import QtGui, QtCore
from PySide.QtGui import QApplication, QDialog, QMainWindow
def qdialog():
qdialog_class_obj = TestClassQDialog()
qdialog_class_obj.show()
qdialog_class_obj.exec_() # wait for user
print "qdialog_user_action: ", qdialog_class_obj.qdialog_user_action
def qmainwindow():
qmainwindow_class_obj = TestClassQMainWindow()
qmainwindow_class_obj.show()
#qmainwindow_class_obj.exec_() # 'TestClassQMainWindow' object has no attribute 'exec_'
class TestClassQDialog(QDialog):
def __init__(self, parent=None):
super(TestClassQDialog, self).__init__(parent)
self.ok_cancel = QtGui.QDialogButtonBox(self)
self.ok_cancel.setStandardButtons(QtGui.QDialogButtonBox.Ok|QtGui.QDialogButtonBox.Cancel)
QtCore.QObject.connect(self.ok_cancel, QtCore.SIGNAL("accepted()"), self.button_ok)
QtCore.QObject.connect(self.ok_cancel, QtCore.SIGNAL("rejected()"), self.button_cancel)
def button_ok(self):
self.qdialog_user_action = 'ok'
self.hide()
def button_cancel(self):
self.qdialog_user_action = 'cancel'
self.hide()
class TestClassQMainWindow(QMainWindow):
def __init__(self, parent=None):
super(TestClassQMainWindow, self).__init__(parent)
self.ok_cancel = QtGui.QDialogButtonBox(self)
self.ok_cancel.setStandardButtons(QtGui.QDialogButtonBox.Cancel|QtGui.QDialogButtonBox.Ok)
QtCore.QObject.connect(self.ok_cancel, QtCore.SIGNAL("accepted()"), self.button_ok)
QtCore.QObject.connect(self.ok_cancel, QtCore.SIGNAL("rejected()"), self.button_cancel)
def button_ok(self):
self.hide()
def button_cancel(self):
self.hide()
class SysTrayIcon(QMainWindow):
def __init__(self, parent=None):
super(SysTrayIcon, self).__init__(parent)
self.qdialog_action = QtGui.QAction("QDialog", self, triggered=qdialog)
self.qmainwindow_action = QtGui.QAction("QMainWindow", self, triggered=qmainwindow)
self.quit_action = QtGui.QAction("Quit", self, triggered=QtGui.qApp.quit)
self.createSystrayIcon()
self.systrayIcon.show()
def createSystrayIcon(self):
self.systrayIconMenu = QtGui.QMenu(self)
self.systrayIconMenu.addAction(self.qdialog_action)
self.systrayIconMenu.addAction(self.qmainwindow_action)
self.systrayIconMenu.addSeparator()
self.systrayIconMenu.addAction(self.quit_action)
self.systrayIcon = QtGui.QSystemTrayIcon(self)
self.systrayIcon.setContextMenu(self.systrayIconMenu)
self.systrayIcon.setIcon(QtGui.QIcon('sample.png')) # point to a valid image if you want.
self.systrayIcon.setVisible(True)
if __name__ == '__main__':
app = QtGui.QApplication([])
systrayicon = SysTrayIcon()
app.exec_()
I've got it working. What I did was move your external method qmainwindow inside of your
SysTrayIcon and created the class parameter self.qmainwindow_class_obj = TestClassQMainWindow(). I've attached the working code below. Also, you're using the old style signal slot method, I take it you're coming from old school PyQt. The new method if very nice, clean and pythonic. I've also put the new style methods in the below code. Another thing I would do is move your qdialog method inside the SysTrayIcon class. I don't really understand why you have it outside the class but maybe I'm missing something. Hope this helps.
#!python
from PySide import QtGui, QtCore
from PySide.QtGui import QApplication, QDialog, QMainWindow
def qdialog():
qdialog_class_obj = TestClassQDialog()
qdialog_class_obj.show()
qdialog_class_obj.exec_() # wait for user
print "qdialog_user_action: ", qdialog_class_obj.qdialog_user_action
class TestClassQDialog(QDialog):
def __init__(self, parent=None):
super(TestClassQDialog, self).__init__(parent)
self.ok_cancel = QtGui.QDialogButtonBox(self)
self.ok_cancel.setStandardButtons(QtGui.QDialogButtonBox.Ok|QtGui.QDialogButtonBox.Cancel)
self.ok_cancel.accepted.connect(self.button_ok)
self.ok_cancel.rejected.connect(self.button_cancel)
def button_ok(self):
self.qdialog_user_action = 'ok'
self.hide()
def button_cancel(self):
self.qdialog_user_action = 'cancel'
self.hide()
class TestClassQMainWindow(QMainWindow):
def __init__(self, parent=None):
super(TestClassQMainWindow, self).__init__(parent)
self.ok_cancel = QtGui.QDialogButtonBox(self)
self.ok_cancel.setStandardButtons(QtGui.QDialogButtonBox.Cancel|QtGui.QDialogButtonBox.Ok)
self.ok_cancel.accepted.connect(self.button_ok)
self.ok_cancel.rejected.connect(self.button_cancel)
def button_ok(self):
self.hide()
def button_cancel(self):
self.hide()
class SysTrayIcon(QMainWindow):
def __init__(self, parent=None):
super(SysTrayIcon, self).__init__(parent)
self.qmainwindow_class_obj = TestClassQMainWindow()
self.qdialog_action = QtGui.QAction("QDialog", self, triggered=qdialog)
self.qmainwindow_action = QtGui.QAction("QMainWindow", self, triggered=self.qmainwindow)
self.quit_action = QtGui.QAction("Quit", self, triggered=QtGui.qApp.quit)
self.createSystrayIcon()
self.systrayIcon.show()
def createSystrayIcon(self):
self.systrayIconMenu = QtGui.QMenu(self)
self.systrayIconMenu.addAction(self.qdialog_action)
self.systrayIconMenu.addAction(self.qmainwindow_action)
self.systrayIconMenu.addSeparator()
self.systrayIconMenu.addAction(self.quit_action)
self.systrayIcon = QtGui.QSystemTrayIcon(self)
self.systrayIcon.setContextMenu(self.systrayIconMenu)
self.systrayIcon.setIcon(QtGui.QIcon('linux.jpeg')) # point to a valid image if you want.
self.systrayIcon.setVisible(True)
def qmainwindow(self):
self.qmainwindow_class_obj.show()
if __name__ == '__main__':
app = QtGui.QApplication([])
systrayicon = SysTrayIcon()
app.exec_()