I have the QSplitter widget in my Qt5 GUI, and there are two child widgets added to that splitter. and there is a QPushButton widget, when that button is pushed second child disappears and when again that button is pushed that child widget appears. but I want like expanding and collapsing of that child widget. but I have no idea how to animate the event when 'setSizes()' is called on the splitter widget.
can anybody provide me the code for that in pyqt5?
Here is my code
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(QtWidgets.QMainWindow):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(400, 300)
self.centralWidget = QtWidgets.QWidget(MainWindow)
self.centralWidget.setObjectName("centralWidget")
self.verticalLayout = QtWidgets.QVBoxLayout(self.centralWidget)
self.verticalLayout.setContentsMargins(11, 11, 11, 11)
self.verticalLayout.setSpacing(6)
self.verticalLayout.setObjectName("verticalLayout")
self.pushButton = QtWidgets.QPushButton(self.centralWidget)
self.pushButton.setObjectName("pushButton")
self.pushButton.clicked.connect(self.splitter_resize)
self.pushButton.setCheckable(True)
self.verticalLayout.addWidget(self.pushButton)
self.horizontalLayout = QtWidgets.QHBoxLayout()
self.horizontalLayout.setSpacing(6)
self.horizontalLayout.setObjectName("horizontalLayout")
self.pushButton_2 = QtWidgets.QPushButton(self.centralWidget)
self.pushButton_2.setObjectName("pushButton_2")
self.pushButton_3 = QtWidgets.QPushButton(self.centralWidget)
self.pushButton_3.setObjectName("pushButton_3")
self.splitter = QtWidgets.QSplitter()
self.splitter.setOrientation(QtCore.Qt.Horizontal)
self.splitter.addWidget(self.pushButton_2)
self.splitter.addWidget(self.pushButton_3)
self.horizontalLayout.addWidget(self.splitter)
self.verticalLayout.addLayout(self.horizontalLayout)
MainWindow.setCentralWidget(self.centralWidget)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def splitter_resize(self):
if self.pushButton.isChecked():
self.splitter.setSizes([16777215, 0])
self.pushButton.setChecked = False
else:
self.splitter.setSizes([16777215, 16777215])
self.pushButton.setChecked = True
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.pushButton.setText(_translate("MainWindow", "PushButton"))
self.pushButton_2.setText(_translate("MainWindow", "PushButton"))
self.pushButton_3.setText(_translate("MainWindow", "PushButton"))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
You can use QVariantAnimation:
from PyQt5 import QtCore, QtGui, QtWidgets
MIN_SIZE, MAX_SIZE = 0, 16777215
class MainWindow(QtWidgets.QMainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
button = QtWidgets.QPushButton(
"Press me", checkable=True, toggled=self.onToggled
)
left_button = QtWidgets.QPushButton("Left")
right_button = QtWidgets.QPushButton("Right")
sp = right_button.sizePolicy()
sp.setHorizontalPolicy(QtWidgets.QSizePolicy.Ignored)
right_button.setSizePolicy(sp)
self.m_splitter = QtWidgets.QSplitter(orientation=QtCore.Qt.Horizontal)
self.m_splitter.addWidget(left_button)
self.m_splitter.addWidget(right_button)
widget = QtWidgets.QWidget()
self.setCentralWidget(widget)
lay = QtWidgets.QVBoxLayout(widget)
lay.addWidget(button)
lay.addWidget(self.m_splitter)
self.m_animation = QtCore.QVariantAnimation(
self,
startValue=MAX_SIZE,
endValue=MIN_SIZE,
valueChanged=self.onValueChanged,
duration=1000,
easingCurve=QtCore.QEasingCurve.InOutCubic,
)
@QtCore.pyqtSlot(bool)
def onToggled(self, checked):
self.m_animation.setDirection(
QtCore.QAbstractAnimation.Forward
if checked
else QtCore.QAbstractAnimation.Backward
)
self.m_animation.start()
@QtCore.pyqtSlot(QtCore.QVariant)
def onValueChanged(self, value):
s = [MAX_SIZE, value]
self.m_splitter.setSizes(s)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
w = MainWindow()
w.resize(640, 480)
w.show()
sys.exit(app.exec_())